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HomeMy WebLinkAboutCT 2018-0003; MAGNOLIA BRADY; STORM WATER POLLUTION PREVENTION PLAN; 2019-08-05Storm Water Pollution Prevention Plan Risk 1 For: Magnolia -Brady (Rough Grading) APN: 205-220-15 & 205-220-16 CT2018-0003 GR2018-0047 GR2019-0021 Prepared for: Magnolia A3 LLC 3394 Carmel Mountain Road, Suite 200 San Diego, CA 92121 Contractor: Pebble Creek Companies 3802 Main Street, Suite 10 Chula Vista, CA 91911 619-938-0312 Project Site Location/Address Magnolia -Brady 1534 Magnolia Ave Carlsbad, CA 92008 Contractor's Storm Water Pollution Prevention Manager David Caron, QSD/P (760) 746-4955 SWPPP Prepared by: Civil Landworks Corp. 110 Copperwood Way, Sutie P Oceanside, CA 92058 (760) 908-8745 RECEI 'ED David Caron, P.E. SWPPP Preparation Date: August 5, 2019 Estimated Project Dates: A' r u (] 6 ZC'..) LAND -,EVELOPMENT E NG!! ::::_E., ·1r~G Start of Construction: December 9, 2019 Completion of Construction: June 5, 2020 WDID No.: 505428 TIBlE OF CONTENTS 1. CERTIFICATIONS ......................................................................................................... 1-1 1.1 Qualified SWPPP Developer (QSD) ............................................................................... 1-1 1.2 Qualified SWPPP Practitioner (QSP) ............................................................................. 1-2 1 .3 Legally Responsible Person (LRP) ................................................................................ 1-3 2. INTRODUCTION, REQUIRED NOTICES, AND OTHER PLANS ................................. 2-1 2.1 Objectives 2-1 2.2 Permit Registration Documents (Including Notice of Intent) .......................................... 2-2 2.3 Change of lnformation .................................................................................................... 2-2 2.4 Notice of Termination ..................................................................................................... 2-3 2.5 Discharge Prohibitions ................................................................................................... 2-4 2.6 Implementation ............................................................................................................... 2-4 2.7 Penalties 2-5 3. PROJECT/SITE INFORMATION ................................................................................... 3-1 3.1 Site Maps 3-1 3.2 Construction and BMP Implementation Schedules ........................................................ 3-1 3.3 Project Risk Type Determination .................................................................................... 3-1 3.4 Receiving Waters/Run-ans and Runoffs ........................................................................ 3-1 3.5 Project Description ......................................................................................................... 3-1 3.6 Total Estimated Area of Soil Disturbance ...................................................................... 3-1 3.7 Existing Soil Conditions .................................................................................................. 3-2 3.8 Construction Areas ......................................................................................................... 3-2 3.8.1 Water Pollution Control Drawings .................................................................... 3-2 4. POTENTIAL POLLUTANT SOURCES ........................................................................ .4-1 4.1 Identification of Non-Storm Water Discharges .............................................................. .4-1 4.2 Inventory of Potential Construction Site Pollutants ....................................................... .4-2 4.3 Petroleum Products ........................................................................................................ 4-7 4.4 Soil Contamination ......................................................................................................... 4-7 4.5 Environmental Protection Requirements ........................................................................ 4-7 5. BEST MANAGEMENT PRACTICES ............................................................................. 5-1 5 .1 General Description ....................................................................................................... 5-1 5.2 Schedule of BMP Implementation .................................................................................. 5-2 5.3 Rainfall Event Action Plan and Schedule of BMP Implementation ................................. 5-3 5.4 Pre-Construction Control Practices ................................................................................ 5-3 5.5 Erosion Control BMPs .................................................................................................... 5-3 5.6 Soil Stabilization BMPs .................................................................................................. 5-4 5.7 Sediment Control BMPs ................................................................................................. 5-4 Magnolia Ave and Brady Cir Risk Level 1 SWPPP TABLE OF CONTENTS 5.7 .1 Silt Fence Perimeter Controls .......................................................................... 5-5 5. 7 .2 Temporary Gravel Construction Entrance/Exit.. .............................................. 5-5 5.7.3 Run-on and Run-off Control ............................................................................ 5-5 5.7.4 Storm Drain Inlet Protection ............................................................................ 5-6 5.7.5 Temporary Sediment Basin (or Trap) .............................................................. 5-6 5.7.6 Fiber Rolls ....................................................................................................... 5-6 5.7.7 Gravel bag Barrier ........................................................................................... 5-6 5.7.8 Check Dams .................................................................................................... 5-6 5.7.9 Street Sweeping and Vacuuming .................................................................... 5-7 5. 7 .10 Active Treatment Systems (A TS) .................................................................... 5-7 5. 7.11 Minimize Slope Length and Steepness ........................................................... 5-7 5.7.12 Other Sediment Control Practices (Include but are not limited to) .................. 5-7 5.8 Wind Erosion BMPs ....................................................................................................... 5-8 5.9 Good Housekeeping ...................................................................................................... 5-8 5.9.1 Good Housekeeping for Vehicle and Equipment Storage and Maintenance ................................................................................................. 5-8 5.9.2 Vehicle and Equipment Fueling ....................................................................... 5-9 5.9.3 Vehicle and Equipment Cleaning .................................................................... 5-9 5.9.4 Good Housekeeping of Materials .................................................................. 5-10 5.9.5 Material Delivery and Storage ....................................................................... 5-11 5.9.6 Equipment Storage ........................................................................................ 5-12 5.10 Post-Construction BMPs .............................................................................................. 5-12 5.11 Recommended Project Specific BM Ps ........................................................................ 5-12 5.11.1 Non-Storm Water BMPs ................................................................................ 5-13 5.12 Post-Construction Requirements for County Areas Outside of Phase I and Phase II MS4 Permit Coverage ............................................................................ 5-15 6. WASTE MANAGEMENT AND DISPOSAL ................................................................... 6-1 6.1 Temporary Storage of Waste Materials ......................................................................... 6-1 6.2 Good Housekeeping During Waste Management.. ........................................................ 6-2 6.2.1 Concrete Wash Out ......................................................................................... 6-2 6.2.2 Equipment Maintenance Waste ....................................................................... 6-3 6.2.3 Miscellaneous Waste ....................................................................................... 6-3 6.3 Disposal Sites ................................................................................................................ 6-3 6.3.1 Hazardous Wastes (Gas, Oil , Chemicals, etc.) ............................................... 6-3 6.4 General Spill Prevention and Control. ............................................................................ 6-4 6.4.1 Minor Spills ...................................................................................................... 6-4 6.4.2 Major Spills ...................................................................................................... 6-4 7. CONSTRUCTION SITE MONITORING PROGRAM (CSMP) ........................................ 7-1 7.1 Site Inspection and Maintenance ................................................................................... 7-1 7.1 .1 Installation, Repairs, and Emergency Preparedness ...................................... 7-3 7.1.2 Inspection Schedule for Stormwater Discharges ............................................. 7-4 7.1.3 Inspection and Visual Monitoring of Non Stormwater Discharges ................... 7-5 7.2 Required Stormwater Turbidity and pH Sampling .......................................................... 7-5 Magnolia Ave and Brady Cir Risk Level 1 SWPPP ii 7.3 7.4 7.5 7.6 7.7 7.8 8. 8.1 9. 9.1 9.2 10. 10.1 TIBlE IF CONTENTS 7.2.1 Sampling Frequency and Required Constituents ............................................ 7-6 7.2.2 Receiving Water Monitoring ............................................................................ 7-6 7.2.3 Required Sampling Locations for Stormwater Effluent.. .................................. 7-6 7.2.4 Required Sampling Locations for Receiving Water ......................................... 7-7 7.2.5 Stormwater Sample Collection and Handling Instructions ............................... 7-7 7.2.6 Analytical Methods for Stormwater Sampling .................................................. 7-8 Bioassessment Requirements ....................................................................................... 7-8 Required Sampling of Non Stormwater Discharges ....................................................... 7-8 Non Visible Pollutant Monitoring Requirements ............................................................. 7-8 7.5.1 lnventory .......................................................................................................... 7-9 7.5.2 Housekeeping of Potential Pollutants .............................................................. 7-9 Corrective Action .......................................................................................................... 7-10 7.6.1 Numeric Action Levels (NALs) for Turbidity and pH ...................................... 7-10 7.6.2 Water Quality Benchmarks for Other Pollutants ............................................ 7-10 7.6.3 Compliance with Benchmark Data ................................................................ 7-11 Sampling Amendments Based Upon Change in Conditions ........................................ 7-11 Retention of Data ......................................................................................................... 7-11 REPORTING .................................................................................................................. 8-1 Reporting 8-1 8.1.1 Site Inspection Report ..................................................................................... 8-1 8.1 .2 Annual Compliance Certification ..................................................................... 8-1 8.1.3 Reporting of Non-Compliance with the CGP or SWPPP ................................. 8-3 8.1.4 Reporting of Exceedance of Water Quality Benchmarks and Numeric 8.1.5 8.1 .6 8.1.7 Action Levels ................................................................................................ 8-3 Monthly Reporting of A TS ............................................................................... 8-3 SWPPP Revisions and Amendments .............................................................. 8-3 Record keeping ................................................................................................ 8-4 RESPONSIBLE PARTIES ............................................................................................. 9-1 List of Contractors and Subcontractors .......................................................................... 9-1 Duties of QSD and QSP Associated With Project SWPPP ............................................ 9-1 TRAINING PROGRAM FOR PERSONNEL UNDER DIRECTION OF QSP ............... 10-1 Education Program ...................................................................................................... 10-1 Magnolia Ave and Brady Cir Risk Level 1 SWPPP iii APPENDICES APPENDIX A-VICINITY AND SITE LOCATION MAP APPENDIX B -RISK DETERMINATION WORKSHEETS TABLE OF CONTENTS APPENDIX C -CONSTRUCTION AND BMP IMPLEMENTATION SCHEDULE APPENDIX D -NOTICE OF INTENT (NOi) & COPY OF ANNUAL FEE APPENDIX E -CHANGE OF INFORMATION (COi) FORM APPENDIX F -NOTICE OF TERMINATION (NOT) FORM APPENDIX G -WATER POLLUTION CONTROL DRAWINGS APPENDIX H -NOTIFICATION OF ANTICIPATED NON-COMPLIANCE APPENDIX I -INVENTORY OF POTENTIAL POLLUTANT SOURCES PLANNED TO BE USED OR STORE AT THE PROJECT SITE APPENDIX J -ANNUAL REPORT(S) APPENDIX K-LIST OF CONTRACTORS AND SUBCONTRACTORS AND QSP CERTIFICATES APPENDIX L -LIST OF RESPONSIBLE PARTIES APPENDIX M -SWPPP AMENDMENT LOG APPENDIX N -TRAINING LOG APPENDIX O -SITE INSPECTION FORM APPENDIX P -VISUAL OBSERVATION INSPECTION FOR NON-STORM WATER DISCHARGE APPENDIX Q -SAMPLE EMERGENCY RELEASE FORM 304 APPENDIX R -TEST SAMPLING LOG APPENDIX S -SOILS REPORT AND WATERSHED AND 3030 LIST INFORMATION APPENDIX T -BEST MANAGEMENT PRACTICES (BMP) FACT SHEETS APPENDIX U -BIOASSESSMENT REQUIREMENTS APPENDIX V -RAINFALL EVEN ACTION PLAN (REAP) APPENDIX W -ACTIVE TREATMENT SYSTEM (ATS) PLAN AND REQUIREMENTS APPENDIX X -SAMPLING PORTOCOL FOR COMPLIANCE WITH ORDER 2009- 009-DWQ APPENDIX Y -CONSTRUCTION GENERAL PERMIT Magnolia Ave and Brady Cir Risk Level 1 SWPPP iv 1. CERTIFICATIONS 1.1 Qualified SWPPP Developer (QSD) SECTION1 cenifications "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Signature David Caron, CPESC, PE, QSD #306 Senior Civil Engineer Civil Landworks Corp. 110 Copperwood Way, Suite P Oceanside, CA 92058 Name and Title Artesian Road and Rio Vista Road Risk Level 2 SWPPP 8/5/2019 Date (760) 908-8745 Telephone Number 1-1 SECTION1 cenifications 1.2 Qualified SWPPP Practitioner (QSP) By September 2, 2011 , the I certify that the contractor's practitioner (QSP) for this Storm Water Pollution Plan (SWPPP), possess the necessary qualifications as defined in Section VII (B) of State Water Resources Control Board Order 2009-009 DWQ (or latest version thereof) including one or more of the following (check all that apply): See APPENDIX K for list of qualifications. ~ Qualified SWPPP Developer (QSD) (Required by 9/2/11 ) D Certified Erosion, Sediment and Storm Water Inspector registered through Enviro Cert International, Inc. (Required by 9/2/11) D Certified Inspector of Sediment and Erosion Control registered through Certified Inspector of Sediment and Erosion Control , Inc. (Required by 9/2/11) D State Water Board Approved QSP Training Course (Required by 9/2/11) Signatu re David Caron, OSD / P Print Name and Title Magnolia Ave and Brady Cir Risk Level 1 SWPPP 8/5/19 Date 1-2 SECTION1 cenifications 1.3 Legally Responsible Person (LRP) Project Name Project No. WDID Number Magnolia -Brady (Rough Grading) APN 205-220-15 & 205-220-16 Carlsbad, CA CT2018-0003/GR2018-0047/GR2019-0021 505428 By certifying the SWPPP in the SMARTS system, the LRP or the LRP's designated individual certifies under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to ensure that qualified personnel properly gather and evaluate the information submitted . Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information , to the best of my knowledge and belief, the information submitted is , true, accurate, and complete. I am aware that there are significant penalties for submitting false information , including the possibility of fine and imprisonment for knowing violations. Legally Responsible Person: Ben Ryan Magnolia A3 LLC 3394 Carmel Mounta in Road, Suite 200 San Diego, CA 92121 Note: Changes to Authorization. If an approved signatory's authorization is no longer accurate, a new authorization satisfying the requirements above must be submitted via SMARTS prior to or together with any reports, information or applications to be signed by an approved signatory. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 1-3 SECTIIN2 Introduction, Required Notices, and Other Plans 2. INTRODUCTION, REQUIRED NOTICES, AND OTHER PLANS 2.1 Objectives The National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with Construction Activity (CGP) (State Water Resources Control Board Order No. 2009-0009-DWQ, NPDES No. CAS000002) requires the development and implementation of a SWPPP for construction sites and linear utility projects with equal to or greater than 1 acre of soil disturbance. The requirements of this order take effect July 1, 2010. This SWPPP specifies the implementation of Best Management Practices (BMPs), as appropriate, to control the discharge of pollutants to surface waters. The objectives of this SWPPP are: 1) All pollutants and their sources, including sources of sediment associated with construction, construction site erosion and all other activities associated with construction activity are controlled; 2) Where not otherwise required to be under a Regional Water Board permit, all non-storm water discharges are identified and either eliminated, controlled, or treated; 3) Site BMPs are effective and result in the reduction or elimination of pollutants in storm water discharges and authorized non-storm water discharges from construction activity to the BAT/BCT standard; 4) Calculations and design details as well as BMP controls for site run-on are complete and correct, and 5) Stabilization BM Ps installed to reduce or eliminate pollutants after construction are completed. The contractor is required to implement the provisions contained in this SWPPP and must comply with the standard provisions and reporting requirements contained in the CGP. A copy of the CGP is included as a part of this SWPPP in APPENDIX Y. The contents of this SWPPP have been based upon the determination of project to be risk 2, a copy of which can be found in APPENDIX B. The contractor shall make the SWPPP available at the construction site during working hours while construction is occurring and shall be made available upon request by a State inspector. A copy of this SWPPP must be kept on site while the site is under construction, commencing with the in itial construction activity and ending with termination of coverage under the CGP. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 2-1 SECTION2 Introduction, Required Notices, and Other Plans 2.2 Permit Registration Documents (Including Notice of Intent) The Permit Registration Documents (PRO), which includes a Notice of Intent (NOi) to comply with the terms of the CGP, shall be digitally filed via the State Water Board's Stormwater Multi- Application and Report Tracking (SMARTs) System once these documents have been approved by the engineer. The PRO Documents consist of the following information: • A copy of this SWPPP and all Appendices: 1.3 LEGALLY RESPONSIBLE PERSON (LRP) o APPENDIX B -Risk Determination Worksheets o APPENDIX D -Notice of Intent (NOi) & Copy of Annual Fee o APPENDIX G -Water Pollution Control Drawings The PRO Documents filed with the State Water Resources Control Board (SWRCB) at least 24 hours prior to the commencement of construction . For more information or to file digitally, refer to: http://smarts.waterboards.ca.gov/smarts/faces/SwSmartsLogin.jsp 2.3 Change of Information APPENDIX E contains a copy of the Change of Information (COi) form for use within 30 days of a reduction or increase in total disturbed acreage. The Legally Responsible Party (LRP), or approved designee, shall electronically file revisions to the PRDs (See Section 2.2) that include: • A revised NOi indicating the new project size • A revised site map showing the acreage of the site completed, acreage currently under construction, acreage sold/transferred or added, and acreage currently stabilized in accordance with the Conditions for Termination of Coverage in Section 2.4 • SWPPP revisions, as appropriate; and • Certification that any new landowners have been notified of applicable requirements to obtain CGP coverage. The certification shall include the name, address, telephone number, and e-mail address of the new landowner. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 2-2 SECTION2 Introduction, Required Notices, and Other Plans • The Contractor will pay the fee and mail it with the payment of revised annual fee notification received within the effective period. • If the project acreage has increased, the LRP , or approved designee, shall mail payment of revised annual fees within 14 days of receiving the revised annual fee notification. The LRP or approved designee shall continue coverage under the CGP for any parcel that has not achieved "Final Stabilization" as defined in Section 2.4. When the property with active CGP coverage, and sells the property, or a parcel thereof, to another person, that person shall become an LRP with respect to whatever parcel was sold. Before the property is sold, the LRP shall inform the new LRP (buyer) of the CGP's requirements in writing. In order for the new LRP (buyer) to continue the construction activity on its parcel of property, the new LRP, or the new LRP's approved signatory, must submit PRDs in accordance with the CGP's requirements. 2.4 Notice of Termination APPENDIX F contains the Notice of Termination (NOT) form and instructions. The Legally Responsible Party (LRP), or approved designee, shall finalize and digitally submit the NOT once construction is completed. Failure to certify the NOT shall result in continuation of permit coverage and annual billing . Completion of construction activities means: • Ownership of the entire property covered under the NOi has been transferred; or • Construction is complete per the conditions outlined in the CGP including : o For purposes of "final stabilization," the site will not pose any additional sediment risk than it did prior to the commencement of construction activity; o There is no potential for construction-related storm water pollutants to be discharged into site runoff; o Final stabilization has been reached ; o construction materials and waste have been disposed of properly; o Compliance with the Post-Construction Standards in Section XIII of the CGP has been demonstrated; (if applicable). o Post-Construction storm water management measures have been installed and a long-term maintenance plan has been established; and o All construction-related equipment, materials and any temporary BMPs on longer needed are removed from the site. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 2-3 SECTIIN2 Introduction, Required Notices, and Other Plans The NOT must demonstrate through photos, RUSLE or RUSLE2, or results of testing and analysis that the site meets all of the conditions above and the final stabilization condition is attained by one of the following methods: a) "70 % final cover method ," no computational proof required OR: b) "RUSLE or RUSLE2 method ." Computational proof required OR: c) "Custom method." The discharger shall demonstrate in some other manner than "a" or "b" above that the site complies with the "final stabilization" requirement. A sample NOT form can be found in APPENDIX F 2.5 Discharge Prohibitions Compliance with the CGP or latest version thereof does not relieve this project of other potentially applicable discharge requirements of the San Diego Region 9 Basin Plan, Statewide Water Quality Control Plan , California Toxics Rule, National Toxics Rule , California Ocean Plan, Areas of Special Biological Significance (ASBS), and/or areas of adopted Total Maximum Daily Load (TMDL) allocations where construction activity or land disturbance has been identified as a source of pollution. Information regarding local 303d List Impairments and TMDLs (Sediment and Non Sediment Related) can be found in APPENDIX S. 2.6 Implementation The SWPPP must be developed prior to the start of soil-disturbing activity. It shall be implemented prior to and concurrently with commencement of soil-disturbing activities. The SWPPP must be implemented prior to the actual commencement of construction. The initial element of the SWPPP to be completed is the training or education program to ensure that the construction personnel are thoroughly aware of the overall storm water pollution management program. The recommended control measures are then constructed and installed as required depending on the phasing of construction. The contractor shall administer the program outlined in this SWPPP until construction is complete. The implementation of the SWPPP is a year- round requirement. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 2-4 SECTION2 Introduction, Required Notices, and Other Plans 2. 7 Penalties Section 309 of the Clean Water Act (CWA) provides significant penalties for any person who violates a permit condition implementing Sections 301 , 302 , 306, 307, 308, 318, or 405 of the CWA or any permit condition or limitation implementing any such section in a permit issued under Section 402. Any person who violates any permit condition of the CGP is subject to a civil penalty not to exceed $37,500 per calendar day per violation, as well as any other appropriate sanction provided by Section 309 of the CWA. The Porter-Cologne Water Quality Control Act also provides for civil and criminal penalties, which in some cases are greater than those under the CWA. Sanctions are also possible for falsification of reporting information on the inspection records and certifications. Section 309 (c)(4) of the CWA provides that any person who knowingly makes any false material statement, representation, or certification in any record or their document submitted or required to be maintained under this Permit, including reports of compliance or non-compliance shall, upon conviction, be punished by a fine of not more than $10,000 or by imprisonment for not more than two years or by both . Magnolia Ave and Brady Cir Risk Level 1 SWPPP 2-5 SECTION3 Proiect/site Information 3. PROJECT/SITE INFORMATION 3.1 Site Maps The site maps are included in APPENDIX A. 3.2 Construction and BMP Implementation Schedules Est. Begin Construction : May 15, 2019; Est. End Construction: May 15, 2020. 3.3 Project Risk Type Determination The entire project will be considered Risk Level 1, based on the attached risk type determination analysis in APPENDIX B. 3.4 Receiving Waters/Run-ons and Runoffs The project site is located in the incorporated area of City of Carlsbad. The flow direction is lightly sloped to the south toward the San Marcos Creek and finally in the Pacific Ocean. The site discharge indirectly into a water body that has been listed under Section 303(d) of the Federal Clean Water Act as impaired for sediment, silt, or turbidity. See APPENDIX S. The project does receive some run-ons from adjacent lots, however, the implementation of gravel bags, check dam and silt fence will be used to divert those run-ons (See APPENDIX G). Runoffs are calculated below based on the runoff coefficient in Section 3.6. 3.5 Project Description The project's scope of work to construct 7 single family detached residential development covers a total of approximately 1.74 acres. The proposed development will also consist of driveways for each unit as well as a bioretention basin . 3.6 Total Estimated Area of Soil Disturbance TABLE 3-1: SUMMARY OF CONSTRUCTION SITE CHARACTERISTICS Total size of the project Area: Estimated size of Construction Area: Total impervious area (Before Construction): Magnolia Ave and Brady Cir Risk Level 1 SWPPP 1.879 Acre ± 1.879 Acre ± 0.11 Acre ± 3-1 Total impervious area (After Construction): SECTION3 Project/site Information 0.68 Acre ± Estimate percentage of the Construction Site Area Impervious (Before Construction): 6.6%± Estimate percentage of the Construction Site Area Impervious (After Construction): 39%± Estimate of Runoff Coefficient (Before Construction): 0.38 Estimate of Runoff Coefficient (After Construction): 0.55 Existing Vegetation to be Preserved (On-Site): 0% The initial estimated soil disturbance area for this Project is 1.74 acres. Changes to the initial estimated area will be documented with re-assessed Risk Level in the revised Notice of Intent documents and will be submitted to the SWRCB (see Appendix D for Notice of Intent). 3.7 Existing Soil Conditions The soils report from the United States Department of Agriculture (See Appendix S), the site was identified as Group D soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. A portion of the south-eastern corner contains Group C soils. 3.8 Construction Areas Areas designated for soil stockpile, waste management, and servicing, and construction material storage have been indicated on the Water Pollution Control Drawings (refer to Section 3.8.1 ). These maps indicate locations of structural storm water controls, existing topography and water bodies and discharge locations. 3.8.1 Water Pollution Control Drawings Water Pollution Control Drawings produced by the Contractor's QSD, which delineate the boundary of the construction site, are provided in APPENDIX G. A copy of the Water Pollution Control Drawings must be displayed in the construction trailer or in an office where construction activities are being managed and overseen. It is understood that grading activities will change on a daily basis. The Water Pollution Control Drawings depict the site as it appears during critical construction phases or after significant construction benchmarks have been reached (e.g ., post-grading, post-paving, etc.). Water Magnolia Ave and Brady Cir Risk Level 1 SWPPP 3-2 SECTION3 Proiect/site Information Pollution Control Drawings must include locations of specific erosion or sediment control measures, structural BMPs, or other project characteristics. As part of the Annual Compliance Certification, the Water Pollution Control Drawings will be considered to be a Progress Map that will be amended and retained each year. The Water Pollution Control Drawings show the layout for the proposed site improvements and contain the required information concerning sediment control practices and BMPs as they appear prior to termination of the grading permit. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 3-3 SECTION4 Potential Pollutant Sources 4. POTENTIAL POLLUTANT SOURCES The Contractor shall conduct an assessment and create a list (See Table 4.1) of potential pollutantsources and identify any areas of the site where additional BMPs are necessary to reduce or prevent pollutants in storm water discharges and authorized non-storm water discharges (APPENDIX I). This potential pollutant list shall be kept with the SWPPP and shall identify all non-visible pollutants which are known, or should be known , to occur on the construction site. At a minimum, when developing BMPs, the discharger shall do the following : i. Consider the quantity, physical characteristics (e.g., liquid , powder, solid), and locations of each potential pollutant source handled, produced , stored, recycled, or disposed of at the site. ii. Consider the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water. iii. Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non-storm water discharges. This shall include an assessment of past spills or leaks, non-storm water discharges, and discharges from adjoining areas. iv. Ensure retention of sampling , visual observation, and inspection records. v. Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water discharges and authorized non-storm water discharges. The discharger shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. Such particulates can include, but are not limited to , sediment, nutrients, trash, metals, bacteria, oil and grease and organics. 4.1 Identification of Non-Storm Water Discharges Authorized non-storm water discharges may include those from de-chlorinated potable water sources such as: Irrigation of vegetative erosion control measures, water to control dust, uncontaminated ground water from dewatering, and other discharges not subject to a separate NPDES permit adopted by a Regional Water Board. The discharge of non-storm water is authorized under the following conditions: 1. The discharge does not cause or contribute to a violation of any water quality standard ; 2. The discharge does not violate any other provision of the General Permit; Magnolia Ave and Brady Cir Risk Level 1 SWPPP 4-1 SECTIIN4 Potential Pollutant Sources 3. The discharge is not prohibited by the applicable Basin Plan ; 4. The contractor has included and implemented specific BMPs required by this General Permit to prevent or reduce the contact of the non-storm water discharge with construction materials and equipment; 5. The discharge does not contain toxic constituents in toxic amounts or (other) significant quantities or pollutants; 6. The discharge is monitored and meets the applicable NALs and NELs; and 7. The contractor reports the sampling information in the Annual Report. The contractor shall not discharge any authorized and unauthorized non-storm water run-off from the project site. Authorized non-storm water discharges associated with this Project may include the following de-chlorinated sources: water to control dirt and dust. Other authorized discharges associated would include irrigation and dewatering. 4.2 Inventory of Potential Construction Site Pollutants The following is a list of construction materials that may be used which may have the potential to contribute to pollutants in storm water discharges: • Vehicle fluids, including oil , grease, petroleum, and coolants • Cement materials associated with PCC • Asphalt • Joint and curing compounds • Concrete curing compounds • Solvents and thinners • BMP materials • Treated lumber (materials and waste) • PCC rubble • General litter • Wood products • Metals and plated products • Electrical wiring and related materials Magnolia Ave and Brady Cir Risk Level 1 SWPPP 4-2 SECTION4 Potential Pollutant Sources Construction Wastes The following is a list of construction wastes that may be created which may have the potential to contribute to pollutants in storm water discharges: • Solid waste generated from removal of trees and shrubs • Packaging materials including wood, paper and plastic • Asbestos • Scrap metals • Rubber • Plastic • Glass • Wood wastes • Timber • Steel • Pipe and electrical cuttings • Non-hazardous equipment parts • Styrofoam • Hazardous wastes • Concrete wastes • Bituminous wastes Construction Activities The following is a list of construction activities that may be performed which may have the potential to contribute to sediment in storm water discharges: • Clearing and grubbing operations • Demolition operations • Grading operations • Grinding operations • Dry utility installations • Utility excavation operations Magnolia Ave and Brady Cir Risk Level 1 SWPPP 4-3 • Wiring • Concrete placement operations • Vehicle and equipment maintenance operations Magnolia Ave and Brady Cir Risk Level 1 SWPPP 4-4 SECTION4 Potential Pollutant Sources SECTION4 Potential Pollutant Sources Table 4.1: Potential Construction Site Pollutants Material Pollutant Visually Tvoe Observable Diesel Fuel Petroleum distillates, naphthalene, Sheen/Stain xylene Gasoline Benzene, toluene, xylene, MTBE Sheen/Stain Hydraulic Oil Mineral oil, trace additives Sheen/Stain Engine Oil Mineral oil, additives , combustion Sheen/Stain byproducts Transmission Mineral oil, trace additives Sheen/Stain Oil Engine Ethylene and propylene glycol, heav~ Green/red Coolant metals Grease Petroleum hydrocarbons Fertilizer Nitrogen, phosphorus Water-insoluble chlorinated Pesticide hydrocarbons, organophosphates, carbonates, and pyrethrums. Herbicide Chlorinated hydrocarbons, organophosphates Soil Organic and inorganic nutrients Amendments Concrete Fly ash, heavy metals, Portland (wet) cement Concrete Turbidity and pH coring slurry Concrete Turbidity and pH sawing slurry Cement Aluminum calcium iron oxide, calcium sulfate Drywall joint Pigment, vinyl acetate compound Grout Silica sand, Portland cement Magnolia Ave and Brady Cir Risk Level 1 SWPPP Sheen/Stain No Varies Varies No White solid Gray liquid Gray liquid Gray powder White putty White powder 4-5 BMP Typical Location WM-6 Staging area NS-8 WM-6 Staging area WM-6 Staging area WM-6 Staging area NS-9 WM-6 Staging area WM-6 Staging area WM-6 Staging area WM-2 Material storage area WM-2 Material storage area WM-2 Material storage area WM-2 Material storage area WM-8 Paved surfaces s Staging area WM-8 and all construction area Staging area WM-8 and all construction area WM-8 Staging area and all construction area WM-6 Staging area and all construction area WM-2 Block wall & construction construction Material Visually Pollutant Observable Type Paint Ethylene glycol, titanium oxide, Colored liquid voe Sealers Diacetone alcohol, No Adhesives Sodium carbonate, Sodium White/yellow chromate, polyaminoamide Sanitary waste Human waste Yes Sanitary waste Animal waste Yes Asphalt Asphalt fumes, cutback asphalt Black material Grinding asphalt Curing Glass Oxide, urea-extended phenol Creamy white Compounds Waste wash Potassium stearate, sodium, water ~allowate Wood Pentachlorophenol, creosote Preservatives Clean ing Perchloroethylene, methylene Solvents chloride, TCE Sediment Soil, turbidity, dust Vegetation Organic matter Solid Waste Floatable and blowable trash and debris Magnolia Ave and Brady Cir Risk Level 1 SWPPP Suds, foam, froth Amber liquid Varies Muddy Yes Yes 4-6 SECTION4 Potential Pollutant Sources Typical BMP Location WM-6 Staging area and all construction area WM-6 Staging area and all construction area Staging area WM-2 and all construction area WM -9 Staging areas & all construction areas All areas WM -9 WM-8 Streets NS-3 All construction area WM-2 All areas WM-2 WM-2 All construction area WM-2 Staging areas SD-32 All areas WM-5 All areas SD-32 All areas SECTION4 Potential Pollutant Sources 4.3 Petroleum Products Petroleum products include oils, fuels, diesel oil, lubricating oils, grease, and asphalt paving. Recommended Control Measures Retain the sediment containing the oil on the construction site. Soil erosion and sediment control practices will accomplish this. Dumping of petroleum wastes into storm drain or sewer systems is strictly prohibited and could result in fines. General guidelines for storing petroleum products, shall be posted by the WM-2 BMP at the lay- down area, include the following: • Store products in weather resistant sheds where possible. • Create shelter around the area with cover and wind protection. • Line the storage area with a double layer of plastic sheeting. • Create impervious barrier around the perimeter around the storage area. • Capacity of the bermed area should be 110 percent of the largest container & should be free from any storm water flooding. • Label all products clearly. • Keep tanks off the ground. • Post information for procedures in case of spills. • Materials for cleaning up spills should be kept on-site and easily available. Spills should be cleaned up immediately and the contaminated material properly disposed of. All storage sheds, dumpsters, or other storage facilities should be regularly monitored for leaks and repaired as necessary. Spill response is covered is Section 6.4 of this SWPPP. 4.4 Soil Contamination It is not anticipated that soil contamination will be encountered. However, if soil contamination is suspected, the appropriate Base offices will be notified. 4.5 Environmental Protection Requirements The Contractor shall comply with Federal, State, Department of Defense (DoD) directives, and local regulations pertaining to the environment, including land, water, air, biological and cultural resources, solid and liquid wastes, hazardous waste and substances, noise pollution, chemical, gaseous, radiant energy, and radioactive material as well as other pollutants. The Contractor may also be required to promptly conduct tests and procedures for the purpose of assessing whether construction operations are in compliance with Applicable Environmental Laws. Analytical work shall be done by qualified laboratories; and where required by law, the laboratories shall be certified. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 4-7 SECTION 5 Best Management Practices 5. BEST MANAGEMENT PRACTICES 5.1 General Description This section identifies best management practices (BMPs) to be used for this site. BMPs are the schedule of activities, prohibitions of practices, maintenance procedures, and other management practices that reduce or eliminate pollutants in storm water discharges and authorized non-storm water discharges. BMPs include treatment requirements, operating procedures, and practices to control site runoff, spillage or leaks, waste disposal, and drainage from raw material storage. BMP implementation must take into account changing weather conditions and construction activities, and various combinations of BMPs will be used over the life of the project to maintain compliance with the CWA. The CGP gives the owner the discretion to determine the most economical, effective, and possibly innovative BMPs to achieve the performance-based goals of the CGP. There are two general categories of BMPs, structural BMPs and non-structural BMPs. Structural BMPs involve the specific construction, modification, operation, maintenance, or monitoring of facilities to minimize the introduction of pollutants into the drainage system or to remove pollutants from the drainage system. Non-structural BMPs are activities, programs, and other non-physical measures that will contribute to the reduction of pollutants from non-point sources to the drainage system. In general , non-structural BMPs are source control measures. BMPs can be either temporary or permanent (including post-construction BMPs). Temporary BMPs can be either structural or non-structural, and include activities such as soil stabilization during construction, construction materials handling procedures, and silt fence installation. Permanent BMPs include those structural and non-structural BMPs that are designed to remain on site after construction, and include activities such as construction of desilting basins, installation of permanent vegetation, and stenciling of storm drains. The contractor develop and implement a SWPPP based on BMPs. The CGP specifies that BMPs must satisfy the best available technology (BAT) and best conventional technology (BCT) standards. The following BMP program is structured to maintain compliance with the BAT and BCT standards and provide safeguards against potential harm to the environment. As it is Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-1 SECTION5 Best Management Practices impossible to anticipate all potential environmental issues that could arise on a daily basis during the course of the project, this BMP program has been tailored to provide effective options to the owner and the contractor who have responsibility for overseeing workplace safety and environmental compliance. If an item in the workplace is in need of attention or correction , persons responsible for SWPPP implementation have been instructed to take all appropriate steps to address the situation in a prompt and effective manner. For similar reasons, contractors should regard the following BMPs primarily as the framework governing their obligation to protect water quality. Contractors should use their best judgment, under the direction of the project's superintendent in deciding the appropriate action to be taken, guided by the CGP's overriding goal of reducing or eliminating pollutant discharges to receiving waters. Appended to this SWPPP report are BMP fact sheets from the current California Storm Water Best Management Practice Handbook for Construction Activity that have been selected for the site. Within this section of the SWPPP the most measures have been tailored for this project. The fact sheets, at times, provide very detailed specifications that were not created for this project. Where specifications in the fact sheets conflict with those in the Water Pollution Control Drawings, BMPs contained in the Water Pollution Control Drawings govern. The minimum BMP requirements should be met as provided in Attachment D of the permit (APPENDIX Y). 5.2 Schedule of BMP Implementation BMPs for the site shall be implemented from the Beginning to End of the project, not just during the part of the year when there is a high probability of precipitation. BMPs will be implemented in a proactive manner during all seasons while construction is occurring, as appropriate to protect water quality during the life of the project. An effective combination of erosion and sediment control BMPs will be implemented on all inactive, finished , or disturbed areas and sediment control BMPs will be implemented along the site perimeter. The QSP is expected to visit the site periodically to ensure the completeness of the SWPPP and the effectiveness of the BMP implementation and if they have trained and delegated someone although it is preferred the QSP visit weekly or be on site, particularly with Risk Level 2. See APPENDIX C for Construction Schedule. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-2 SECTION5 Best Management Practices 5.3 Rainfall Event Action Plan and Schedule of BMP Implementation For Risk Level 2, a Rainfall Event Action Plan (REAP) is required 48 hours prior to any likely precipitation even . A likely precipitation event is any weather pattern that is forecast to have 50% or greater probability of producing precipitation in the project area. A printed copy of precipitation forecast information is obtained by a QSP. See APPENDIX V. 5.4 Pre-Construction Control Practices The following is a list of pre-construction control practices to aid in reducing sediment and other pollutants on the construction site: • Carefully plan the schedule of grading activities in accordance with weather conditions. Avoid or minimize land-disturbing activities scheduled between the wet seasons. • Materials to be stored onsite prior to construction will be adequately protected with source control measures previously identified in the discussion of material storage and handling. • Delineate existing vegetation to be preserved by establishing the limits of grading and installing a protective barrier or fence around these areas. • Delineate natural drainage courses in the field for avoidance and the construction of diversions for runoff from the construction area away from the natural drainage. • Inspect all equipment prior to mobilization to insure it is clean and in proper working order. 5.5 Erosion Control BMPs Erosion control, also referred to as "soil stabilization," is the most effective way to retain soil and sediment on the construction site. The most efficient way to address erosion control is to preserve existing vegetation where feasible, to limit disturbance, and to stabilize and re- vegetate disturbed areas as soon as possible after grading or construction. The contractor shall provide effective soil cover for inactive areas and all finished slopes, and utility backfill. Inactive areas are areas of construction activity that have been disturbed and are not scheduled to be re-disturbed for at least 14 days. The contractor shall limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist. Where plastic materials are deemed necessary, the contractor shall consider the use of plastic materials resistant to solar degradation. All erosion control measures will be implemented in conformance with the requirements of the approved Water Pollution Control Drawings and need to follow per Attachment D of the permit and the fact sheets. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-3 SECTIIN5 Best Management Practices 5.6 Soil Stabilization BMPs Soil stabilization, also considered an erosion control BMP, consists of source controls that are designed to prevent soil particles from detaching and becoming suspended in storm water runoff. Soil stabilization BMPs protects the soil surface by covering and/or binding soil particles. The following are principles for effective temporary and final soil stabilization during construction: • Preserve existing vegetation where required and when feasible; • Implement temporary soil stabilization measures for finished slopes; • It is required that areas without construction activity for 14 days or longer be stabilized. • Control erosion in concentrated flow paths by applying erosion control blankets, erosion control seeding, and lining swales; and • At completion of construction, apply permanent erosion control to all remaining disturbed soil areas. Sufficient quantities of temporary soil stabilization materials will be maintained on-site to allow implementation for disturbed areas, non-disturbed areas, and areas that require deployment before the onset of rain. See Section 2.4 for additional information regarding final site stabilization and processing of the NOT. 5. 7 Sediment Control BMPs Sediment control BMPs prevents a net increase of sediment load in storm water discharge relative to pre-construction levels. Sediment control BMPs are required at appropriate locations along the site perimeter and at all operational tributary inlets to the storm drain system. Sediment control practices may include filtration devices and barriers (such as fiber rolls, silt fence, straw bale barriers, and gravel inlet filters) and/or settling devices (such as sediment traps or basins). Effective filtration devices, barriers, and settling devices shall be selected, installed and maintained properly. These are the most basic measures to prevent sediment from leaving the project site and moving into receiving waters. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-4 SECTION5 Best Management Practices 5.7.1 Silt Fence Perimeter Controls Silt fences (BM P SE-1) are temporary permeable barriers to intercept, slow, and provide sedimentation of sediment-laden water prior to discharge. Appropriate locations consist of: along the draining perimeter of site when needed; along streams and channels; at toes of exposed slopes when needed; and downgrade from small areas. When extra-strength geotextile and closer post spacing are used, the mesh support fence or hog wire support may be eliminated. Posts for this type of fabric shall be placed per SE-1. 5.7.2 Temporary Gravel Construction Entrance/Exit A temporary stone or gravel, stabilized, pad located at points of vehicular ingress and egress on a construction site (TC-1 & TC-3). This will be placed wherever traffic will be leaving a construction site and moving directly onto a public road or other paved areas. Materials for a temporary gravel construction entrance and/or exit consist of the following: 1. Material should be quarry spoils, 3 to 6 inches in size; 2. The gravel pad shall be at least 12 inches thick and 50 feet in length; 3. Width shall be full width of the vehicle ingress and egress area (minimum of 30 feet); 4. A filter fabric fence should be installed down gradient from the construction entrance where possible in order to contain sediment from the entrance; 5. Filter fabric must underlie gravel pad. 6. Eliminate tracking of sediment offsite, limit construction access to controlled locations only. 7. Daily inspection is required for Risk Level 2 per Attachment D (APPENDIX Y). 5.7.3 Run-on and Run-off Control The project does receive some run-ons from adjacent properties, however, the implementation of check dams and gravel bags will be used to divert those run-ons (See APPENDIX G). All run-on and run-off shall be manage effectively by the dischargers within the site and off the site. Run-on from off site shall be directed away from all disturbed areas or shall collectively be in compliance with the effluent limitations with the General Permit. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-5 SECTIIN5 Best Management Practices 5.7.4 Storm Drain Inlet Protection Temporarily block or filter inlet to trap sediment before it enters the storm drain system (SE-'10). Typically, gravel bags are placed where inlets are located downstream of erodible areas. 5.7.5 Temporary Sediment Basin (or Trap) A temporary basin (SE-2) with controlled storm water release structure formed by constructing an embankment of compacted soil across a drainage way, or other suitable locations; creates a temporary sump or low point to trap sediment prior to entering the storm drain system. This type of sediment control measure will be placed within low points of mass-graded sites. The following are design considerations for temporary sediment basins (or traps): 1. The sediment basin or trap may be formed by partial excavation and/or by construction of a compacted embankment. It may have one or more inflow points carrying runoff. Baffles are included to spread flow throughout the basin. A securely anchored riser pipe is usually the discharge mechanism, along with an emergency overflow spillway. The riser shall be installed per the Water Pollution Control Drawings; 2. Sediment traps may be used for small areas (5 acres or less); and 3. Refer to "California Storm Water Best Management Practice Handbook - Construction Activity," prepared for the Storm Water Quality Task Force, 2009. 5.7.6 Fiber Rolls Fiber rolls (SE-5) are temporary lines of fiber rolls (also known as straw wattles) to intercept runoff, reduce its flow velocity, release the runoff as sheet flow, and provide removal of sediment from the runoff through sedimentation. 5.7.7 Gravel bag Barrier Gravel bag barriers (SE-6) are temporary lines of gravel bags to intercept sediment. This type practice can be placed along graded right-of-way or pads prior to improvement construction. 5.7.8 Check Dams These are small dams constructed across a swale or drainage ditch. Check dams (SE-4) can be placed where temporary or permanent channels are not yet vegetated, channel lining is Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-6 SECTION5 Best Management Practices unfeasible, and therefore, velocity checks are required in small open channels which drain 10 acres or less. No check dams will be placed in streams (unless approved by State Departments of Fisheries of Wildlife as appropriate). Other permits may also be necessary. Check dams in association with sumps work more effectively at slowing flow and retaining sediment. 5.7.9 Street Sweeping and Vacuuming Sweeping and Vacuuming (SE-7) prevents sediment from the project site from entering storm drains or receiving waters. It is suitable anywhere sediment is tracked from the project site onto public or private paved streets and roads. It is also applicable during preparation of paved surfaces for final paving. 5.7.10 Active Treatment Systems (ATS) A TS will not be utilized for Risk Level 2 projects. 5. 7 .11 Minimize Slope Length and Steepness Critical Slope/Sheet Flow Length Combinations Slope Percentage Slope Percentage Sheet flow length not to exceed 0-25% 20 feet 25-50% 15 feet Over 50% 1 O feet 5.7.12 Other Sediment Control Practices (Include but are not limited to) 1. Incorporate a schedule of construction activities, including sediment and erosion practices, to reduce exposure of bare soil to ensure proper sequencing of adequate BMPs; 2. Use surface roughening, terracing, or other protections on bare earth to minimize erosion ; 3. Shall ensure that all storm drain inlets and perimeter controls, runoff control BMPs, and pollutant controls at entrances and exists are maintained and protected from activities that reduce their effectiveness; 4. Shall inspect on a daily basis all immediate access roads daily; 5. Keep runoff velocities low; 6. Prevent contact with ra infall or runoff; Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-7 SECTION 5 Best Management Practices 7. Mark limits of grading to protect areas of existing vegetation; 8. Protect disturbed areas from runoff; 9. Retain sediment within the construction site area; and 10. Implement a thorough maintenance and follow-up program. 5.8 Wind Erosion BMPs BMP WE -1 shall be utilized to stabilize exposed surface and minimize activities that suspend or track dust particles. Approved methods for controlling dust on heavily traveled and disturbed areas include: • Wet suppression (watering); • Gravel or asphalt surfacing; • Temporary gravel construction entrances; • Equipment wash-out areas; and • Haul truck covers. For areas of occasional or no construction traffic, permanent or temporary vegetation , mulching, and silt fences are approved methods for dust control. Watering rates should be minimized as necessary to prevent runoff and ponding. Water equipment leaks should be repaired immediately. Risk Level 2 dischargers shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. Such particulates can include, but are not limited to , sediment, nutrients, trash , metals, bacteria, oil and grease and organics 5.9 Good Housekeeping A construction storage and staging area shall be established on the site. The construction storage and staging area shall be used for, but not limited to the following: 5.9.1 Good Housekeeping for Vehicle and Equipment Storage and Maintenance It is anticipated that vehicle and equipment maintenance will be utilized. In the event, BMP NS- 10 shall be designated in the lay-down area as shown on the Water Pollution Control Drawings in APPENDIX G. The measures to be utilized include but are not limited to the following : Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-8 SECTIDN5 Best Management Practices 1. Maintain all construction vehicles to prevent oil or other fluid leaks; 2. Keep vehicles and equipment clean. Prevent excessive build-up of oil and grease; 3. Use offsite repair shops; 4. Keep stockpiles spill cleanup materials readily accessible; 5. Regularly inspect onsite vehicles and equipment for leaks, and repair immediately; 6. Check incoming vehicles and equipment (including delivery trucks and employee and subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or equipment onsite; and 7. Segregate and recycle wastes such as grease, used oil or oil filters, antifreeze, cleaning solutions, automotive batteries, and hydraulic and transmission fluids. 5.9.2 Vehicle and Equipment Fueling 1. If fueling must occur onsite (BMP NS-9), use designated areas at least 50 feet away from drainage facilities; 2. Locate onsite fuel storage tank volume plus additional capacity to contain precipitation within a bermed area; 3. Cover retention area with an impervious material and install it in a manner to ensure that any spills will be contaminated in the retention area; 4. Always use secondary containment, such as a drain pan or drop cloth , to catch spills or leaks when removing or changing fluids; and 5. Use drip pans for any oil or fluid changes. 5.9.3 Vehicle and Equipment Cleaning It is anticipated that vehicle and equipment cleaning will be utilized. In the event, BMP NS-8 shall be designated in the lay-down areas as shown on the Water Pollution Control Drawings in APPENDIX G. The measures to be utilized include but are not limited to the following: 1. Use as little water as possible, to prevent non-stormwater discharges to drainage systems; 2. If washing must occur onsite, use designated, bermed wash areas to prevent wastewater discharge into the storm water, creeks, rivers, and other water bodies; 3. Use phosphate-free , biodegradable soaps; and 4. Do not permit steam-cleaning onsite. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-9 SECTION 5 Best Management Practices 5.9.4 Good Housekeeping of Materials It is anticipated that Material Use (BMP WM -1) will be utilized. In the event, BMP WM-2 shall be designated in the lay-down areas as shown on the Water Pollution Control Drawings in APPENDIX G. The measures to be utilized include but are not limited to the following: 1. Identify the products used and/or expected to be used and the end products that are produced and/or expected to be produced. 2. Cover and berm loose stockpiled construction materials that are not actively being used (i.e. soil, spoils, aggregate, fly-ash , stucco, hydrated lime, etc.). 3. Contain stockpiled materials such as mulches and topsoil when they are not actively being used . 4. Contain fertilizers and other landscape materials when they are not actively being used. 5. Discontinuing the application of any erodible landscape material within 2 days before a forecasted rain event or during periods of precipitation. 6. Applying erodible landscape material at quantities and application rates according to manufacture recommendations or based on written specifications by knowledgeable and experienced field personnel. 7. Stacking erodible landscape material on pallets and covering or storing such materials when not being used or applied. 8. Store products in weather resistant sheds where possible. 9. Create shelter around the area with cover and wind protection. 10. Store materials in bermed areas and in secondary containment structures such as earthen dikes, horse troughs, or spill blankets with a surrounding berm; 11 . Keep chemicals in their original containers and well labeled in accordance with federal, state, and local regulations at all times; 12. If drums must be kept uncovered, store them at night at a slight angle to reduce corrosion and ponding of rainwater on the lids; 13. Train employees and subcontractors in proper storage practices; 14. Purchase and store non-hazardous and environmentally friendly materials, whenever possible; 15. Keep inventory of hazardous materials for use in an emergency; Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-10 SECTIDN5 Best Management Practices 16. Post information for procedures in case of spills. 17. Install barriers around storage areas to prevent contact with runon. 18. Provide indoor coverage, a temporary roof, or a secure impermeable tarp for plaster or other powders. These can create large quantities of suspended solids in runoff, which may be toxic to aquatic life and cause serious environmental harm. Water quality and air quality can be protected with a secure cover; 19. Provide temporary roof, secured plastic sheeting, or a tarp for stockpiled materials and wastes; 20. Use mats during storage; 21 . Have proper storage instructions posted at all time in an open and conspicuous location; 22. Keep an ample supply of spill cleanup materials near storage areas; 23. Keep tanks off the ground. 24. Inspect storage areas before and after rainfall events, and at least twice weekly; 25. Ensure that designated storage areas are kept clean and well organized ; 26. Repair and/or replace perimeter controls, containment structures, and covers as necessary to ensure their proper functioning ; and 27. Spot check employees and subcontractors monthly throughout the job to ensure appropriate practices are being employed. 5.9.5 Material Delivery and Storage It is anticipated that Material Delivery and Storage will be utilized. In the event, BMP WM-1 shall be designated in the lay-down areas as shown on the Water Pollution Control Drawings in APPENDIX G. The measures to be utilized include but are not limited to the following: 1. Use mats during delivery; 2. Only transport to the site the amount needed for work on the site; 3. Site should be accessed only in designated access areas with appropriate pollution/sediment controls in place; and 4. Limit loading and unloading during rainfall. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-11 SECTIDN5 Best Management Practices 5.9.6 Equipment Storage Equipment will be stored in a designated construction staging area on or near the project site. No vehicle maintenance will be performed outside the staging area. Vehicle maintenance will be limited to routine service only. All major repairs and services must be completed off-site. 5.10 Post-Construction BMPs It is anticipated that bio-retention basins will be used in the project. 5.11 Recommended Project Specific BMPs The following tables describe the various BMPs are to be used in this project. The contractor will use their best professional judgment to implement an effective combination of these BMPs, as appropriate for the prevailing weather conditions and status of construction. All of the BMPs are referenced from the current version of "Handbook for Construction prepared by the California Storm Water Quality Association" prepared by the Storm Water Quality Task Force. The project specific BMPs fact sheets are included in APPENDIX T, for reference. Also, where specifications from the fact sheets conflict with the Water Pollution Control Drawings, the Water Pollution Control Drawings govern. BMP Number/Title EC 1: Scheduling EC 2: Preservation of Existing Vegetation SE 1: Silt Fence SE 4: Check Dams Magnolia Ave and Brady Cir Risk Level 1 SWPPP TABLE 5-1: BEST MANAGEMENT PRACTICES Location General Description ALL Sequencing the project to reduce the amount and duration of soil exposed. N/A Controlling erosion through preserving existing trees, shrubs, and/or grasses. ALL Detaining sediment-laden water with , primarily, fabric fencing or fencing combined with sandbags. ALL Reduces the effective slope of the channel by reducing flow velocity. 5-12 SECTION 5 Best Management Practices BMP Number/Title Location General Description SE 6: Gravel bag ALL Detaining sediment-laden water and preventing hazardous Barrier material runoff with sandbag barriers. SE 7: : Street ALL Sweeping. Sweeping and PAVED Vacuuming AREAS SE 10: Storm Drain ALL Temporarily pond runoff before it enters the storm drain, Inlet Protection allowing sediment to settle. WE 1: Wind ALL Controlling fugitive dust through , primarily, watering and Erosion Control street sweeping . (Dust Controls) WM 1: Material LAYDOWN Requiring minimization of materials stored on-site, storage Delivery and AREA of materials in stabilized or secured areas, storage of Storage certain materials in secondary containment, and employee training. WM 2: Material Use LAYDOWN Using products that provide less potential for pollutants by AREA using alternative products TC 1: Stabilizing ENTRANCES Stabilizing points of ingress and egress and points where Construction & EXITS paved and unpaved roads meet. Entrance TC 3: ENTRANCES Removes sediment from tires and under carriages to Entrance/Outlet & EXITS prevent sediment from being transported offsite. Tire Wash 5.11.1 Non-Storm Water BMPs This subsection discusses BMPs to protect surface waters from non-storm water. Activities, materials, and equipment having the potential to contribute pollutants to storm water are listed in Section 4 of this SWPPP. TABLE 5-2: NON-STORM WATER BMPS AND WASTE MANAGEMENT BMP Number/Title NS 2: Dewatering Operations Magnolia Ave and Brady Cir Risk Level 1 SWPPP Location General Description TRENCH Manage discharge of pollutants when non-storm water must be removed from a work location 5-13 BMP Number/Title NS 3: Paving & Grinding Operations NS 6: Illicit Connection/ Discharqe NS 8: Vehicle and Equipment Cleaning NS 10: Vehicle and Equipment Maintenance NS 12: Concrete Curing WM 3: Stockpile Management WM4: Spill Prevention, Control & Cleanup WM 5: Solid Waste Management WM6: Hazardous Waste Management WM?: Contaminated Soil Management WM8: Concrete Waste Management WM9: Sanitary/Septic Waste Manaqement Magnolia Ave and Brady Cir Risk Level 1 SWPPP SECTIIN5 Best Management Practices Location General Description RUNWAY Requiring runoff prevention, proper disposal of wastes, and employee training. ALL Eliminate illegal connections or dumping LAYDOWN Proper vehicle and equipment cleaning practices and BMPs AREA LAYDOWN Compelling off-site maintenance, if possible, on-site AREA maintenance in designated or secured areas, cover for materials stored outside, inspection for leaks and spills, immediate containment of leaks and spills, and employee training. ALL Use proper storage, handling and use of curing compounds to reduce pollution LAYDOWN Covering materials to reduce erosion and pollution AREA LAYDOWN Reducing the chance for spills, containing and cleaning up AREA spills, properly disposing of spilled materials, and training employees. LAYDOWN Reduce the discharge of pollutants to stormwater from solid AREA or construction waste LAYDOWN Compelling the minimization of hazardous material use, AREA proper disposal of hazardous materials, and employee training. LAYDOWN Requiring the detection, treatment, and/or disposal of AREA contaminated soils. LAYDOWN Requiring off-site washout areas, when possible, designated AREA and secured on-site washout areas, and employee training. LAYDOWN Proper placement and maintenance of facilities to eliminate AREA pollutants into storm water 5-14 SECTIIN5 Best Management Practices 5.12 Post-Construction Requirements for County Areas Outside of Phase I and Phase II MS4 Permit Coverage Areas within San Diego County that are outside the coverage of a Phase I or Phase II Municipal Separate Storm Sewer System (MS4) Permit are required to comply with specific post construction discharge standards. These standards are in effect on or after September 2, 2012. The purpose of these standards is to sustain the physical and biological integrity of aquatic ecosystems. Furthermore, these requirements are meant to protect watersheds and water bodies from the hydrologic and pollution impacts associated with post construction conditions. This protection is meant to primarily be done by non structural means and is to be accomplished by the following : • Replication of the Pre Construction Water Balance for storms up to and including the 85th Percentile • Preservation of the existing drainage density for project sites equal to or greater than 2 acres of disturbance The site is within a MS4 permit. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 5-15 SECTION& Waste Management and Disposal 6. WASTE MANAGEMENT AND DISPOSAL 6.1 Temporary Storage of Waste Materials Material waste will be placed in dumpsters or waste contaminant areas at the end of each workday. If solid waste materials are to be temporarily stored on-site, the contractor shall establish an area of appropriate size on the site. This area shall be lined with a non-permeable geomembrane. The geomembrane boundary shall have two-foot minimum overlaps and extend three feet beyond the dumpsite. Rull-offs/dumpsters is an alternative option for solid waste disposal. The dumpsite should be bermed to prevent surface runoff from entering or leaving the site. Chemical pollutants shall be disposed of in proper receptacles; however, certain by- products from construction operations that have traditionally been dumped onsite should be placed in the established dump area. These wastes include: Excess Dirt Bituminous Material Residue Excess Concrete/Asphalt Plaster Waste Hydroseed Waste Meta ls Materials specifically prohibited from storage or disposal, except in an approved receptacle or location include: Paints Primers Thinners Soil Sterilants Acrylic/Polyurethane The material in the temporary waste area shall be disposed of properly on a regular basis and at no time shall the disposal material be allowed to exceed the perimeter berm. Hazardous wastes must be stored in non-leaking containers and labeled with waterproof stickers. Labels must specify the words "Hazardous Waste," the composition and physical state of the waste, its properties (e.g., flammable), the date accumulation began and the name and address of the generator. Hazardous waste will be stored no longer than 90 days. Waste containers will be labeled and located in a covered area within the temporary waste area. Lids should be closed at all times. Sanitary facilities will be conveniently located (preferably in the temporary waste area) and well maintained. Useful construction materials will be salvaged and recycled if possible. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 6-1 SECTION& waste Management and Disposal 6.2 Good Housekeeping During Waste Management Dischargers shall implement good housekeeping measures for waste management, which, at a minimum, shall consist of the following: a. Prevent disposal of any rinse or wash waters or materials on impervious or pervious site surfaces or into the storm drain system. b. Ensure the containment of sanitation facilities (e .g., portable toilets) to prevent discharges of pollutants to the storm water drainage system or receiving water. c. Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. d. Cover waste disposal containers at the end of every business day and during a rain event. e. Prevent discharges from waste disposal containers to the storm water drainage system or receiving water. f. Contain and securely protecting stockpiled waste material from wind and rain at all times unless actively being used. g. Implement procedures that effectively address hazardous and non-hazardous spills. h. Cover and berm loose stockpiled construction materials that are not actively being used. i. Develop a spill response and implementation element of the SWPPP prior to commencement of construction activities. The SWPPP shall require that: i. Equipment and materials for cleanup of spills shall be available on site and that spills and leaks shall be cleaned up immediately and disposed of properly; ii. Appropriate spill response personnel are assigned and trained; and iii. Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. 6.2.1 Concrete Wash Out Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 6-2 SECTION& Waste Management and Disposal Concrete and cement-related mortars are toxic to fish and the aquatic environment and require proper handling and disposal to minimize or eliminate discharges to gutters, storm drains, and watercourses. Concrete wash out areas are to be located as shown on the Site Plan and Progress Maps, and constructed according to BMP WM -8. 6.2.2 Equipment Maintenance Waste Waste oil , grease, gas, antifreeze, hydraulic fluid and any other residues from the servicing or cleaning of construction equipment must be disposed of at authorized collection centers. Equipment must be kept in the proper state of tune and leaks in machinery fuel , crankcase, or hydraulic lines must be repaired promptly. 6.2.3 Miscellaneous Waste The material in the temporary waste area shall be disposed of properly on a regular basis and at no time shall the disposal material be allowed to exceed the perimeter berm. Erosion control devices, which tend to collect waste, such as silt fences and sand bag barriers, should also be checked and cleaned on a weekly basis. The contractor is prohibited from discharge of any debris from the project sites at any time. Debris discharge at any level represents a violation of the Statewide General Construction Permit. 6.3 Disposal Sites Under no circumstances shall construction waste be buried, dumped or discharged at the construction site. Excess concrete and asphalt materials will be taken to approved off-site disposal areas. 6.3.1 Hazardous Wastes (Gas, Oil, Chemicals, etc.) The management of hazardous waste is governed by regulations found in Title 22, Sections 66260 et.seq. Stormwater and non-stormwater discharges associated with this project shall not contain hazardous substances equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117 .3 and 302.4, unless a separate NP DES Permit has been issued to regulate those discharges. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 6-3 SECTION& Waste Management and Disposal 6.4 General Spill Prevention and Control This section is indicative of the information to be included in the contractor's Spill Prevention Plan. 6.4.1 Minor Spills Minor spills are those that are likely to be controlled by on-site personnel. The following actions should occur upon discovery of a minor spill: • Contain the spread of the spill. • If the spill occurs on paved or impermeable surfaces, clean up using dry methods (i.e., absorbent materials, cat litter, and/or rags). • If the spill occurs in dirt areas, immediately contain the spill by constructing an earthen dike. Dig up and properly dispose of contaminated soil. • If the spill occurs during rain , cover the affected area to avoid runoff. • Record all steps taken to report and contain the spill. 6.4.2 Major Spills On-site personnel should not attempt to control major spills until the appropriate and qualified emergency response staff has arrived at the site. Notify the State Office of Emergency Services (OES) at (800) 852-7550 when a hazardous spill occurs. For spills of Federal reportable quantities, notify the national response center at (800) 424-8802 also. A written report should be sent to all notified authorities. Failure to report major spills can result in significant fines and penalties. Additional measures to prevent, control, contain, and clean up spills can be found in Best Management Construction Handbook (CA 12) and the "Erosion and Sediment Control Field Manual," Third Edition (pp. 99-100). If the spilled material is hazardous then immediately contact the Fire Department (9-1-1) for a Hazardous Material Response Team. Significant releases or threatened releases of hazardous materials must be reported to the Governor's Office of Emergency Services (800-852-7550) and will require written follow-up reports. A copy of instructions for emergency spill notification from Magnolia Ave and Brady Cir Risk Level 1 SWPPP 6-4 SECTION& waste Management and Disposal the Governor's Office of Emergency Services (also summarized in the following table) and the Emergency Release Follow-Up Notice Reporting Form. See APPENDIX Q. TABLE 6-1: MAJOR SPILLS PRIORITY ACTION LIST Priority 1 2 3 4 ... for large spills on California Highways ... large spills over Federal CERCLA Reportable Quantities ... large spills in or near marine waterways ... large spills harmful to workers ... hazardous waste tank system releases Magnolia Ave and Brady Cir Risk Level 1 SWPPP Agency Contact Fire Department 9-1-1 County Hazardous Materials (619) 338-2222 Management Division Governor's Office of Emergency (916) 262-1621 Services Regional Storm Water Pollution (888) 846-0800 Prevention Hotline California Highway Patrol 9-1-1 National Response Center (800) 424-8802 U.S. Coast Guard Station San (619) 278-7670 Diego Cal/OSHA San Diego (619) 767-2280 Dept. of Toxic Substances San (858) 637-5531 Diego Field Office 6-5 SECTIONJ Construction Site Monitoring Program lCSMPl 7. CONSTRUCTION SITE MONITORING PROGRAM (CSMP) The collection and handling of water samples requires care to ensure the integrity and validity of the samples. This section of the SWPPP provides guidance on the handling and testing of storm water samples as well as an inspection and maintenance strategy for the project site. The Contractor shall immediately notify the Regional Water Board of any non-storm water discharges off the project site, and provide written report within 24 hour of the event including details and correction taken. The Contractor's QSP shall immediately collect, test, and submit all report of effluent water discharge (including lab report), if required. 7 .1 Site Inspection and Maintenance Erosion and sediment controls can become ineffective if they are damaged or not properly maintained. Structural controls used in the erosion control used in the erosion control process require ongoing inspection, maintenance and repair. The contractor at all times shall properly operate and maintain any facilities and systems of treatment and control which are installed or used by the contractor to achieve compliance with the CGP and the requirements of the SWPPP. In the event of failure, structural controls shall be repaired as soon as possible, pending that it is safe for personnel and equipment to complete said repair. The QSP shall perform or supervise the following inspection, maintenance repair and sampling activities at the project location , or the QSP may delegate any or all of these activities to an employee appropriately trained to do the task(s): • Weekly inspections and observations, and at least once each 24-hour period during extended storm events, to identify and record BMPs that need maintenance to operate effectively, that have failed , or that could fail to operate as intended. • Upon identifying failures or other shortcomings the QSP shall coordinate with the Contractor to begin implementing repairs or design changes to BMPs within 72 hours of identification and complete the changes as soon as possible. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-1 SECTIONJ Construction Site Monitoring Program lCSMPJ • For each inspection required , the QSP shall complete an inspection checklist, using a form provided by the State Water Board or Regional Water Board or in an alternative format. (Refer to APPENDIX 0 ) • The QSP shall ensure that checklists shall remain onsite with the SWPPP and at a min imum , shall include: • Inspection date and date the inspection report was written. • Weather information, including presence or absence of precipitation , estimate of beginning of qualifying storm event, duration of event, time elapsed since last storm, and approximate amount of rainfall in inches. • Site information, including stage of construction, activities completed , and approximate area of the site exposed. • A description of any BMPs evaluated and any deficiencies noted. • If the construction site is safely accessible during inclement weather, list the observations of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non-storm water controls. Otherwise, list the results of visual inspections at all relevant outfalls, discharge points, downstream locations and any projected maintenance activities. • Report the presence of noticeable odors or of any visible sheen on the surface of any discharges. • Any corrective actions required , including any necessary changes to the SWPPP and the associated implementation dates. • Photographs taken during the inspection, if any. The following items shown on the Water Pollution Control Drawings should be inspected based upon the schedule requirements of Section 7.1.2. Repairs shall be made as required : • Storm Water Storage/Containment Areas • Energy Dissipater Magnolia Ave and Brady Cir Risk Level 1 SWPPP • Fiber rolls • Check Dams • Silt Fences 7-2 SECTIINJ Construction Site Monitoring Program lCSMPJ • Dust Control • Surface Erosion • Slope Stability • Debris • Storage of Soil and Materials • Disposal Areas (export sites) • Spills or Leaks from vehicles, equipment, an d materials Action Item Remove all sediment that has accumulated behind desilters, check dams, silt fences, etc. Clean up and store all hazardous material out of the weather and away from exposure to runoff. Make sure that all temporary erosion devices are in place. Ensure slope protection devices/measures are in good condition. Ensure vegetation is installed and in good condition. Ensure adequate amount of stockpiled with temporary erosion materials and sediment control devices. Review all observations and, where safe to do so, take corrective measures should maintenance, repair, or addition of structures become necessary to prevent the movement of sediment from the site or to prevent the addition of other pollutants into the storm water runoff. Inspect site for signs of surface erosion. Inspect site for flows outflanking or undermining structures. Inspect site for slope stability and note any slope movement. Inspect site for any containment failure of stored materials and for containment of portable sanitary or septic waste facilities. • Drain Inlet Protection • Portable Toilets • Non-Storm Water BMPs (if applicable) • Construction entrances Before During Extended Storm Storm Events (where accessible Events within each 24-hour period) X X X X X X X X X X X X X X X X X X X X X 7.1.1 Installation, Repairs, and Emergency Preparedness After Storm Events X X X X X X X X All necessary erosion and sediment control devices shall be installed prior to storm events. Compliance with this SWPPP requires the inspector to identify BMP effectiveness and notify the QSP, so that BMPs will be repaired or design change implemented as soon as possible, Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-3 SECTIONJ Construction Site Monitoring Program CCSMPJ depending on field conditions. All corrective maintenance to BMPs shall be performed as soon as possible depending on worker safety. Equipment, materials, and workers must be available for rapid response to failures and emergencies. Necessary materials shall be available on site and stockpiled at convenient locations for rapid construction of temporary erosion or sediment control devices when rain is imminent or problems arise. 7.1.2 Inspection Schedule for Stormwater Discharges The QSP shall visually observe (inspect) the discharge of stored or contained storm water that is derived from and discharged subsequent to a qualifying rain event producing precipitation of ½ inch or more at the time of discharge. Stored or contained storm water that will likely discharge after operating hours due to anticipated precipitation shall be observed prior to the discharge during operating hours. The QSP shall conduct visual observations (inspections) during business hours only, and shall record the time, date and rain gauge reading of all qualifying rain events. Within 2 business days (48 hours) prior to each qualifying ra in event, the QSP shall visually observe (inspect): • All storm water drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. If needed, the discharger shall implement appropriate corrective actions • All BMPs to identify whether they have been properly implemented in accordance with the SWPPP. If needed, the discharger shall implement appropriate corrective actions. • Any storm water storage and containment areas to detect leaks and ensure maintenance of adequate freeboard. For the visual observations (inspections) described above, the QSP shall observe the presence or absence of floating and suspended materials, a sheen on the surface, discolorations, turbidity, odors, and source(s) of any observed pollutants. Within two business days (48 hours) after each qualifying rain event, the QSP shall conduct post rain event visual observations (inspections) to (1) identify whether BMPs were adequately designed, implemented, and effective, and (2) identify additional BMPs and revise the SWPPP accordingly. The QSP shall maintain on-site records of all visual observations (inspections), personnel performing the Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-4 SECTIINJ Construction Site Monitoring Program lCSMPJ observations, observation dates, weather conditions, locations observed , and corrective actions taken in response to the observations. Sample inspection logs are included in APPENDIX R. The QSP is not required to conduct visual observation (inspections) or physically take samples (as discussed in Section 7.2) under the following conditions: • During dangerous weather conditions such as flooding and electrical storms. • Outside of scheduled site business hours. If no required samples or visual observation (inspections) are collected due to these exceptions, the QSP shall include an explanation in this SWPPP and in the Annual Report documenting why the sampling or visual observation (inspections) were not conducted. 7.1.3 Inspection and Visual Monitoring of Non Stormwater Discharges The QSP shall conduct one visual observation inspection quarterly in each of the following periods: January-March, April-June, July-September, and October-December. Visual observation (inspections) are only required during daylight hours (sunrise to sunset). The QSP shall ensure that visual observations (inspections) document the presence or evidence of any non-storm water discharge (authorized or unauthorized), pollutant characteristics (floating and suspended material, sheen , discoloration, turbidity, odor, etc.), and source. The QSP shall maintain on-site records indicating the personnel performing the visual observation (inspections), the dates and approximate time each drainage area and non-storm water discharge was observed, and the response taken to eliminate unauthorized non-storm water discharges and to reduce or prevent pollutants from contacting non-storm water discharges. Sample inspection logs are included in APPENDIX R. 7.2 Required Stormwater Turbidity and pH Sampling The Construction Site Monitoring Plan (CSMP) has been developed by the Contactor and is provided within this section of the SWPPP and in APPENDIX J. The CSMP addresses the following objectives: • To demonstrate that the site is in compliance with the Discharge Prohibitions and applicable Numeric Action Levels (NALs) of the CGP. An NAL represents a value which, when exceeded, represents a requirement for corrective action by means of Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-5 SECTIINJ Construction Site Monitoring Program lCSMPJ implementing additional Best Management Practices. Exceedance of an NAL requires digital submittal of a report to the Regional Water Quality Control Board. For more information regarding NALs, refer to Section 7.6.1. • To determine whether non-visible pollutants are present at the construction site and are causing or contributing to exceedance of water quality objectives. • To determine whether immediate corrective actions, additional Best Management Practice (BMP) implementation, or SWPPP revisions are necessary to reduce pollutants in storm water discharges and authorized non-storm water discharges. • To determine whether BMPs included in the SWPPP/Rain Event Action Plan (REAP) are effective in preventing or reducing pollutants in storm water discharges and authorized non-storm water discharges. Documents for use in preparing sampling records can be found in APPENDIX 0. 7.2.1 Sampling Frequency and Required Constituents The QSP shall collect storm water grab samples from sampling locations, as defined in Section 7.2.3. The storm water grab sample(s) obtained shall be representative of the flow and characteristics of the discharge. At minimum , the QSP shall collect 3 samples per day of the qualifying event, and shall ensure that the grab samples collected of stored or contained storm water are from discharges subsequent to a qualifying rain event (producing precipitation of ½ inch or more at the time of discharge). The QSP shall analyze their effluent samples for pH , turbidity, and any additional parameters for which monitoring are required by the Regional Water Board . 7.2.2 Receiving Water Monitoring Receiving water monitoring is not required for Risk 2 sites. 7.2.3 Required Sampling Locations for Stormwater Effluent The QSP shall perform sampling and analysis of storm water discharges to characterize discharges associated with construction activity from the entire project disturbed area, including at all locations where storm water is discharged off-site. The QSP shall ensure that storm water discharge collected and observed represents the effluent in each drainage area based on visual Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-6 SECTIONJ Construction Site Monitoring Program lCSMPl observation of the water and upstream conditions. The QSP shall monitor and report site run- on from surrounding areas if there is reason to believe run-on may contribute to an exceedance of NALs. Projects that deploy an A TS on their site, or a portion on their site, shall collect A TS effluent samples and measurements from the discharge pipe or another location representative of the nature of the discharge. The QSP shall select analytical test methods from the list provided in Table 7-1 below. All storm water sample collection preservation and handling shall be conducted in accordance with Section 7.2.5 below. 7.2.4 Required Sampling Locations for Receiving Water Receiving water sampling is not required for Risk 2 sites. TABLE 7-1: SUMMARY OF ALLOWABLE TEST METHODS, REPORTING UNITS, AND DETECTION LIMITS Parameter Test Method / Discharge Min. Reporting Numeric Action Protocol Type Detection Units Level Limit pH Field test with calibrated lower NAL = 6.5 portable Risk Level 2 0.2 pH units upper NAL = 8.5 instrument Discharges Turbidity EPA 0180.1 Risk Level 2 and/or fie ld test Discharges 1 NTU 250 NTU with calibrated other th an portable ATS instrument For ATS 1 NTU NIA discharges 7.2.5 Stormwater Sample Collection and Handling Instructions The QSP shall refer to Table 7-1 for test methods, detection limits, and reporting units. The QSP shall ensure that testing laboratories will receive samples within 48 hours of the physical sampling (unless otherwise required by the laboratory), and shall use only the sample containers provided by the laboratory to collect and store samples. The QSP shall designate and train personnel to collect, maintain, and ship samples in accordance with the Surface Water Ambient Monitoring Program's (SWAMP) 2008 Quality Assurance Program Plan (QAPrP). The QSP shall ensure that all sampling and sample preservation are in accordance with the current edition of "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association). All monitoring instruments and equipment (including a discharger's own Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-7 SECTIINJ Construction Site Monitoring Program lCSMPJ field instruments for measuring pH and turbidity) should be calibrated and maintained in accordance with manufacturers' specifications to ensure accurate measurements. The QSP shall ensure that all laboratory analyses are conducted according to test procedures under 40 CFR Part 136, unless other test procedures have been specified in the CGP or by the Regional Water Board. With the exception of field analysis conducted by the discharger for turbidity and pH , all analyses should be sent to and conducted at a laboratory certified for such analyses by the State Department of Health Services. The QSP shall conduct their own field analysis of pH and may conduct their own field analysis of turbidity if the Contractor has sufficient capability (qualified and trained employees, properly calibrated and maintained field instruments, etc.) to adequately perform the field analysis. 7.2.6 Analytical Methods for Stormwater Sampling The QSP shall refer to Table 7-1 for test methods, detection limits, and reporting units. The QSP shall perform pH analysis on-site with a calibrated pH meter or a pH test kit, see APPENDIX X. The QSP shall record pH monitoring results on paper and retain these records in APPENDIX J. The QSP shall perform turbidity analysis using a calibrated turbidity meter (turbidimeter), either on-site or at an accredited lab. Acceptable test methods include Standard Method 2130 or USEPA Method 180.1. The results will be recorded in the site log book in Nephelometric Turbidity Units (NTU). 7.3 Bioassessment Requirements Bioassessment monitoring is not required for Risk Level 2 sites. 7.4 Required Sampling of Non Stormwater Discharges The QSP shall sample effluent at all discharge points where non-storm water and/or authorized non-storm water is discharged off-site, and shall send all non-storm water sample analyses to a laboratory certified for such analyses by the State Department of Health Services. The QSP shall monitor and report run-on from surrounding areas if there is reason to believe run-on may contribute to an exceedance of NALs. 7.5 Non Visible Pollutant Monitoring Requirements The QSP shall collect one or more samples during any breach, malfunction, leakage, or spill observed during a visual inspection which could result in the discharge of pollutants to surface Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-8 SECTIONJ Construction Site Monitoring Program lCSMPJ waters that would not be visually detectable in storm water. The samples must be large enough to characterize the site conditions. Samples must be collected at all discharge locations that can be safely accessed. These samples must be taken during the first two hours of discharge from rain events that occur during business hours and which generate runoff. The Contractor's QSP is required analyze samples for all non-visible pollutant parameters (if applicable) indicating the presence of pollutants identified in the pollutant source assessment required (The project QSD shall modify the CSMP to address these additional parameters in accordance with any updated SWPPP pollutant source assessment). The QSP is required to collect a sample of storm water that has not come in contact with the disturbed soil or the materials stored or used on-site (uncontaminated sample) for comparison with the discharge sample. A comparison is required between the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis. The QSP shall keep all field /or analytical data in the SWPPP. The Contractor's QSP shall send samples to the following laboratory to be analyzed for chemicals listed in the Potential Construction Site Pollutants table of Section 4: Orange Coast Analytical, Inc. Laboratory Certification (ELAP) No. : 2576 3002 Dow, Suite 532 Tustin, CA 92780 Ph: 714-832-0064 Fax: 714-832-0067 Contact Person: Mark Noorani 7.5.1 Inventory A table to inventory potential pollutants that will be kept on-site during construction has been included in the table of Section 4 of this SWPPP. The table describes the potential sources of pollution, and their location on the construction site. 7.5.2 Housekeeping of Potential Pollutants This SWPPP emphasizes good housekeeping as the best method to prevent storm water pollution. The proper management and storage of potential pollutants can preclude the need for Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-9 SECTIONJ Construction Site Monitoring Program lCSMPJ storm water, sampling program. Good housekeeping in this context includes the following elements: 1. Designate storage areas away from storm water inlets, conveyances, and receiving waters; 2. Store potential pollutants either inside a building or under a water-tight roof; and 3. Keep all potential pollutants in watertight containers. Other BMPs, such as placing gravel bag barriers or a berm around the perimeter of storage sites, can provide additional protection against pollutant contact with storm water. 7.6 Corrective Action Corrective action must be initiated when established NALs are exceeded. Corrective action must also be initiated when non-visual pollutant sample test results indicate that the site's storm water discharges may cause or contribute to non-compliance with the water quality standards or US EPA benchmarks for the receiving water. These corrective actions include provision for additional BMPs that limit or eliminate contact between storm water and visible and/or non visible pollutant sources. Where contact cannot be reduced or eliminated, storm water that has come in contact with the pollutant sources must be retained on site and not allowed to be discharged until it can be treated so as not to cause or contribute to non-compliance with water quality standards of the receiving water. 7.6.1 Numeric Action Levels (NALs) for Turbidity and pH County Risk Level 2 projects that do not employ ATS are subject to a pH NAL of 6.5-8.5, and turbidity NAL of 250 NTU (see Table 7-1). 7.6.2 Water Quality Benchmarks for Other Pollutants The Water Quality Control Plan provides a list of benchmark concentrations that should not be exceeded more than 10% of the time during any one-year period. While these benchmarks do not constitute an official discharge standard or action limit, this SWPPP will apply these concentrations as decision-making benchmark standards for consideration of the QSP. Where such standards are not available through the basin plan, the benchmark standards set forth in Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-10 SECTIONJ Construction Site Monitoring Program lCSMPJ the U.S. EPA Multi-Sector Industrial Permit will be used for decision-making purposes. The applicable benchmarks are as follows: TABLE 7-2: STORM WATER QUALITY BENCHMARKS FOR POLLUTANTS OTHER THAN PH AND TURBIDITY Constituent Benchmark Reference Concentration BOD 30 mg/L rrable B U.S. EPA Multi-Sector Permit Nitrates Concentration per Reqion Central Coast Region Basin Plan TDS Concentration per Reqion Central Coast Region Basin Plan Conductivity 200 µmhos/cm Central Coast Region Basin Plan Oil & Grease 30 mg/L Table B U.S. EPA Multi-Sector Permit 7.6.3 Compliance with Benchmark Data Where laboratory data for three consecutive rain events for any specific outfall indicate that discharges at that outfall are below benchmarks for any analyte, testing for that analyte at that outfall will cease. However, whenever the construction activities serviced by the outfall in question are observed to have changed testing for the full suite of analytes will re-instituted as described above. 7.7 Sampling Amendments Based Upon Change in Conditions Whenever a change in site conditions (for example, a change in location of construction material storage or stockpiles from that indicated on storm water quality sampling location maps) that might effect the appropriateness of sampling points or the introduction of new pollutants of concern, the testing protocols in this section of the SWPPP will be reviewed and revised accordingly by the Contractor's QSD. 7 .8 Retention of Data Records generated for all sampling operations must be retained for a period of at least three years after the termination of coverage under the Permit. The records must be maintained within the SWPPP and digitally submitted based upon the procedures described in Section 8. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 7-11 8. REPORTING 8.1 Reporting SECTION I Reponing Records of all inspections, which include the date of inspection, the named individual who performed the inspection and their observations, shall be kept on file. Records of all inspections, such as inspection reports, compliance certification, and non-compliance reporting must be retained for a period of at least three years. Updates should be amended to this SWPPP by the Contractor's QSD and should be placed in APPENDIX J. A copy of this SWPPP shall be kept in the construction trailer and available for review at all times during the construction project. 8.1.1 Site Inspection Report A site inspection report will be prepared in conjunction with each pre-storm event, post-storm event, and storm event inspections and may be prepared for routine inspections. Additionally, a site inspection report will be prepared prior to the annual compliance certification. Site inspection reports will also be prepared to verify BMP application and effectiveness during one- time discharges of non-storm water when such discharges occur. The project records for monitoring and reporting in accordance with the SWPPP will be maintained at the construction site trailer. Once the project is complete, project records will be maintained by the LPR. APPENDIX O provides a sample inspection log which should be copied and used as needed. A qualified person will be assigned the responsibility to conduct inspections. Such reports shall be retained for a period of at least three years after the termination of coverage under the CGP. Blank Site Inspection Reports are provided in APPENDIX 0. 8.1.2 Annual Compliance Certification By September 1st of each year, an Annual Report shall be prepared and certified by the Contractor's QSD and submitted by the LRP through the State's SMARTS electronic reporting program stating compliance with the terms and conditions of the Permit, including but not limited to : Sampling and analysis methods, results and findings; any violations; corrective actions Magnolia Ave and Brady Cir Risk Level 1 SWPPP 8-1 SECTION I Reponing implemented; all site inspections, findings and action events; training documentation; and the amended SWPPP. A copy of the Annual Report will be provided TO review/comment and LRP certification prior to electronic submission to the SWRCB. A paper copy of each Annual Report can be found in APPENDIX J and must be retained for a minimum of three years after the date the annual report was filed. The annual report shall include storm water monitoring information consisting of: • The date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation (rain gauge). • The names of individual(s) who performed the facility inspections, sampling, visual observation (inspections), and/or measurements. • The date and approximate time of analyses. • The individual(s) who performed the analyses. • A summary of all analytical results from the last three years, the method detection limits and reporting units, and the analytical techniques or methods used. • Rain gauge readings from site inspections. • Quality assurance/quality control records and results. • Non-storm water discharge inspections and visual observation (inspections) and storm water discharge visual observation records. • The visual observation and sample collection exception records and reports specified in Section 7. • The records of any corrective actions and follow-up activities that resulted from analytical results, visual observation (inspections), or inspections. The Annual Report shall also include training information consisting of • Documentation of all training for individuals responsible for all activities associated with compliance with the CGP; Magnolia Ave and Brady Cir Risk Level 1 SWPPP 8-2 SECTION I Reporting • Documentation of all training for individuals responsible for BMP installation, inspection, maintenance, and repair; and • Documentation of all training for individuals responsible for overseeing, revising, and amending the SWPPP. 8.1.3 Reporting of Non-Compliance with the CGP or SWPPP The LRP, or approved designee, will notify the Regional Water Quality Control Board of any instance in which the construction site is not in compliance with the GCP and the SWPPP. Non- compliance reporting shall be made either when the contractor cannot certify compliance with any portion of the Statewide GCP. Digitally filed non-compliance notification must be submitted within 5 business days of identification of non-compliance. The Notification of Anticipate Noncompliance form can be found on APPENDIX H. 8.1.4 Reporting of Exceedance of Water Quality Benchmarks and Numeric Action Levels The LRP, or approved designee, will notify the Regional Water Quality Control Board of any instance in which the stated Numeric Action Levels or water quality benchmarks described within this SWPPP have been exceeded. A sample NAL exceedance report can be found in APPENDIX 0. 8.1.5 Monthly Reporting of ATS At a minimum, every 30 days the LRP shall access the State Water Boards Storm Water Mulit- Application and Report Tracking system (SMARTS) and electronically upload field data from the ATS, if ATS is used. Records must be kept for three years after the project is completed. 8.1.6 SWPPP Revisions and Amendments The SWPPP will be revised and certified by the Contractor's QSD to reflect any additional BMPs that have been and will be implemented, the implementation schedule for added BMPs, and any additional monitoring required. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 8-3 SECTION I Reponing The SWPPP shall be amended whenever there is a change in construction or operations which will affect the discharge of pollutants to surface waters, ground waters, or the municipal storm sewer system. The SWPPP shall also be amended if the contractor violates a condition of the CGP or has not achieved the general objective of reducing or eliminating pollutants in storm water discharges. If the Regional Water Quality Control Board determines that the Army Corps and/or contractor are in violation of the CGP, the SWPPP shall be amended by the Contractor's QSD. Revisions to this SWPPP shall be treated as amendments. All amendments will be signed by the Contractor's QSD, dated, and directly attached to this SWPPP. The Date Summary of SWPPP Amendments is located in the front cover, and detailed descriptions can be found in APPENDIX M. All QSD's amendments to the SWPPP and copies of supporting documentation, will be listed in the Annual Report for submittal each year that the permit is active. 8.1.7 Recordkeeping The Contractor is responsible for complying with the record keeping of the project. The following are specific project compliance records that must be maintained on site, retained on file, and available upon request: • Weekly BMP Inspections. See APPENDIX O for Site Inspection Form. • Before, during, and after storm inspections. See APPENDIX O for Site Inspection Form. • Quarterly nonstorm inspection. See APPENDIX O for Site Inspection Form. • Sampling for non-visible pollutants per Section 7.2.3. See APPENDIX R for Test Sampling Log . • Visual Observation Inspection Non-Storm Water Discharges. See APPENDIX P. • Inventory of Potential Pollutant Sources Planned to be used or stored at the Project Site. See APPENDIX I. A paper and digital copy of these records associated with the project SWPPP and amendments must be provided at the project completion acceptance. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 8-4 SECTIIN9 Responsible Panies 9. RESPONSIBLE PARTIES A list of responsible parties and their contact information is available in APPENDIX L. Whenever changes occur, the Contractor will update the list. 9.1 List of Contractors and Subcontractors The list of the contractors or subcontractors that will be responsible, under the direction of the QSP, for the implementation of the SWPPP through the nature of the construction activity they are involved is in APPENDIX K. This list should be as complete as possible at the initial SWPPP preparation date and then amended periodically as the contractors or subcontractors are involved change. All contractors and subcontractors should be provided with a copy of the SWPPP sections that summarize the recommended good housekeeping practices and control measures. This list shall be revised as necessary to reflect the addition of contractors working on the project. 9.2 Duties of QSD and QSP Associated With Project SWPPP The duties of a Qualified SWPPP Developer (QSD) are to write, amend, and certify the project's SWPPP. Duties of a Qualified SWPPP Practitioner (QSP) are nonstorm water and storm water visual observations, sampling and analysis, and monitoring and reporting program as specified in Sections 7 and 8. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 9-1 SECTION10 Training Program for Personnel Under Direction of QSP 10. TRAINING PROGRAM FOR PERSONNEL UNDER DIRECTION OF QSP Trained personnel who are familiar with the requirements of the General Construction Permit and the monitoring and reporting requirements shall conduct site inspections, repairs, and record keeping. These individuals shall be trained prior to initiation of the construction project. These individuals should be identified in the sample list found in APPENDIX N. Any training program updates should be amended to this SWPPP by the Contractor's QSD and the list of trainees should be placed in APPENDIX K. 10.1 Education Program The main objective of the education program is to insure that competent personnel execute all inspections, maintenance, and repairs . In addition, it is imperative that all site personnel are famil iar with the purpose and requirements of the Permit and the SWPPP to insure all operations are appropriately conducted . The core of the Education and Training Program shall be presented to all personnel prior to commencement of construction activities. The individual(s) directly responsible for implementation of the SWPPP shall conduct training sessions. Training sessions shall be held thereafter on an as-needed basis to ensure all personnel remain appraised of changes in construction procedures, methods or SWPPP requirements or amendments. It is the responsibility of those conducting the Education and Training Program to ensure personnel are familiar with the following: • All requirements of this Permit and the SWPPP; • What are considered storm water pollutants (i.e., sediment, chemicals, and etc.); • Understand the purpose, implementation and operation of each measure required by the SWPPP. This includes the inspection, maintenance and repair of BMPs. This is important so that any member of the construction staff can recognize potential problems and take appropriate corrective actions; • Procedures and control measures for use of pollutants and/or hazardous substances and proper responses for spills; and • Remain updated, through ongoing training, of changes or modifications in the control measures of the SWPPP and the Permit. It is recommended that erosion control be Magnolia Ave and Brady Cir Risk Level 1 SWPPP 10-1 SECTION10 Training Program for Personnel Under Direction of QSP a topic at weekly or monthly site construction meetings with staff to review procedures and implementation of the SWPPP. • Specialized training requirements for the operation of Active Treatment Systems (if applicable.) It is critical that site personnel are familiar with the requirements, implementation, and function of the control measures designed to minimize storm water pollution. A comprehensive knowledge of the Permit and the SWPPP will ensure that all members of the construction team are participating in implementing and maintaining the effectiveness of this program. Magnolia Ave and Brady Cir Risk Level 1 SWPPP 10-2 APPENDIX A -VICINITY AND SITE LOCATION MAP MTE: 12/28/17 st.II£, 1"•5000' SITE LOCATION MAGNOIJA A VE MAP at\ .. BY: A._ ,t.. "1.: .{ o~v-S-/ \ %_ ~~~\) A \0. ~ ~VJ" Y, \ \~ '--PROJECT LOCATION v'<'~s ~~~\ ~ ~ ~~ /\\ \\X~~~ I SITE VICINITY MAP om: 12/26/17 = 1"•500' I MAGNOUA AVE ~ A_ 10' (3ml MAXIMUM SPACING v,ml 111RE SUPPORT FENCE 6' (1.8ml MAXIMUM SPACING 'MTHOUT 111Rt SUPPORT FENCE STEEL OR WOOD POST 36" (1m) HIGH MAX. PONDING HElGHT FLOW I~ ?):~)~~ . >~~ ·r.:~:; =~~ 12 MIN. )0 ~••··"¥»'<»' 00mm) A, )'),_'-<'<. -'----'I' 6" (100 X 150mm) lRENCH l't11H COMPACTED BACKFILL TRENCH DETAIL NO SCALE NOTES: 9" MAX. (225mm) S10RAGE HT. PONDING HEIGHT FLOW 3/4" (20mm) IN. DRAIN ROCK a• (200mm) I INSTALLATION WITHOUT TRENCHING NO SCALE SILT FENCE SHALL BE PLACED ON SLOPE CONTOURS TO MAXMIZE PONDING EFFlCIENCY. INSPECT AND REPAIR FENCE AFTER EACH STORM EVENT AND REMOVE SEDIMENT Vi\iEN NECESSARY. 9" (225mm) MAXIMUM RECOMMENDED STORAGE HElGHT. REMOVED SIEDIMENT SHALL BE DEPOSITED TO AN AREA THAT l't1LL NOT CONlRIBUTE SEDIMENT OFF-SITE AND CAN BE PERMANENTLY STABILIZED. SILT FENCE NOT TO SCALE 11 0 COPPERWOOD WAY, SUITE P, OCEANSIDE, CA 92058 PH : 760-908-8745 • info@civillandworks.com NOTE: MANY DESIGNS CAN BE FIELD FABRICATED, OR ,; FABRICATED UNITS MAY ,r,,- BE USED. WATER SUPPLY ~ & HOSE SHAKER PLA CRUSHED AGGREGATE GREATER THAN 3" BUT SMALLER THAN 6" A DITCH TO CARRY RUNOFF TO A SEDIMENT TRAPPING DEVICE CORRUGATED STEEL PANELS ORIGINAL GRADE PER CASQA FILTER FABRIC SECTION A-A NO SCALE CONSTRUCTION ENTRANCE PER CASQA TC -1 CAUTION!! RUNOFF EXISTING UNDERGROUND UTILmES AND FACILITIES SHOWN ON THESE PLANS HAVE BEEN OBTAINED FROM AVAILABLE RECORDS WHICH IN MOST CASES ARE SCHEMATIC PLANS. THESE PLANS MAY NOT REFLECT All EXISTING UTLmES. EXACT LOCATION AND DEPTH OF EXISTING UTLmES ARE UNKNOWN. SUBCONTRACTOR TO CONFlRM THE LOCATIONS OF All EXISTING UTLmES PRIOR TO START OF WORK, AND NOTIFY ENGINEER OF WORK OF ANY DISCREPANCIES. GRAVEL FlLLED SANDBAGS STACKED TIGHTLY PLAN VIEW NO SCALE EROSION CONTROL BAG \ WEIR SPACED AS NEEDED \ 111 ~11 "-.___ BOTTOM ROW OF BAGS TO BE SET 4" MIN. INTO FlNISH GRADE DETAIL GRAVEL BAG PLACEMENT NO SCALE GRAVEL SANDBAGS PER CASQA SC -6 20 0 GRAPHIC SCALE SCALE: 1"= 20' 40 BMP LEGEND (DURING CONSTRUCTION) DESCRIPTION G) STABILIZED CONSTRUCTION ENTRANCE PER CASQA TC-1 (D SILT FENCE PER CASQA SE-1 @ INLET PROTECTION PER CASQA SC-10 G) FlBER ROLLS PER CASQA SE-5 @ GRAVEL BAG BARRIER PER CASQA SC-6 -0---1□1--- ---FR QUANTITY 532 SF 1,185 LF 32 EA 260 LF 322 EA GENERAL SITE MANAGEMENT DESCRIPTION MATERIAL DELIVERY & STORAGE: SPILL PREVENTION AND CONTROL: CONCRETE WASTE MANAGEMENT: SOLID WASTE MANAGEMENT: SANITARY WASTE MANAGEMENT: HAZARDOUS WASTE MANAGEMENT: MANAGE SOIL STOCKPILES: PAVING AND GRINDING OPERATION: STREET SWEEPING AND VACUUMS: SYMBOL I WM -1 I WM -4 I WM-8 I WM -5 I WM -9 I WM-6 I WM -3 I NS-3 SE-7 fsHm7 CITY OF CARLSBAD I SH~ETS I l---+----+----------------t-----11----+--+-----I l___.2._J ENGIN EERING DEPARTMENT 1---+----+----------------t-----11---+--+----1 EROSION CONTROL PLANS FOR: MAGNOLIA -BRADY ROUGH GRADING SWPPP EROSION CONTROL EXHIBIT APPROVED: JASON S. GELDER T CITY ENGINEER RCE 63912 EXPIRES 9 30 20 DA TE 1 DA TE INITIAL ENGINEER OF WORK REVISION DESCRIPTION DATE INITIAL DA TE INITIAL OTHER APPROVAL CITY APPROVAL OWN BY: PN CHKD BY: DC RVWD BY: DC WDID: 505428 .. -.. ... ---.. .. .. --------.. --.. -----.. -.. -.. .. .. -.... APPENDIX B -RISK DETERMINATION WORKSHEETS .. .. .. .. -.. • -• -------------.. ... -----------,,,. 11/20/2018 Rainfall Erosivity Factor Calculator for Small Construction Sites I NPDES I US EPA Facility Information • Start Date: 05/15/2019 • End Date: 05/15/2020 • Address: 1534 Magnolia Ave, Carlsbad, CA • Latitude: 33.1593 • Longitude:-117.3312 Erosivity Index Calculator Results An erosivity index value Of 32.20 has been determined for the construction period of 05/15/2019 -05/15/2020. A rainfall erosivity factor of 5.0 or greater has been calculated for your site and period of construction. You do NOT qualify for a waiver from NPDES permitting requirements. Start Over https://www.epa.gov/npdes/rainfall-erosivity-factor-calculator-small-construction-sites 1/1 .. .. -----------------.. -----.. ---------.. -.. APPENDIX C-CONSTRUCTION AND BMP IMPLEMENTATION SCHEDULE -.. 1111 ---------------------------------- Construction Schedule Begin Construction: May 15, 2019 Erosion Control Implementation: 5/15/19 to 5/22/19 Grading pad activities: 5/22/19 to 6/22/19 Install Utilities: 6/21/19 to 7/22/19 Install Drainage: 7/22/19 to 8/23/19 Construct Homes: 7 /22/19 to 5/1 /20 Site clean-up: 5/1/20 to 5/15/20 Leave site: May 15, 2020 .. ... .. .. -.. ---------------------------.. ---... APPENDIX D -NOTICE OF INTENT (NOi) & COPY OF ANNUAL FEE "UPLOADED IN SMARTS" e Terry Tamminen Secreta,y for Environmental Protection To: SUBJECT: State Water Resources Control Board Division of Water Quality 1001 I Street• Sacramento, California 95814 • (9 16) 34 1-5537 Mailing Address P.O. Box 1977 • Sacramento, California • 95812-1977 FAX (9 16) 341 -5543 • Internet Address: http://www.swrcb.ca.gov CONSTRUCTION STORM WATER DISCHARGER CHECKLIST FOR SUBMITTING A NOTICE OF INTENT Arnold Schwarzengger Governor In order for the State Water Resources Control Board to expeditiously process your Notice of Intent (NOi), the following items must be submitted to either of the addresses indicated below: l. --- 2. --- 3. --- NOI (please keep a copy for yo ur files) with all applicable sections completed and origi nal signature of the landowner or signatory agent; Check made out to the "State Water Resources Control Board" Fee is ($200 + $20/acre) plus 18.5% surcharge. See enclosed for li sting of fees by acre. Site Map of the faci lity (see NOI instructions). DO NOT SEND BLUEPRINTS U.S. Postal Service Address Overnight Mailing Address State Water Resources Control Board Division of Water Quality Attn: Storm Water Section P.O. Box 1977 Sacramento, CA 95812-1977 State Water Resources Control Board Division Of Water Quality Attn: Storm Water, 15 th Floor 1001 I Street Sacramento, CA 95814 NO Is are processed in the order they are received. A NOi receipt letter will be mail ed to the land owner within approximately two weeks. Incomplete NOI submittals will be returned to the landowner's address within the same timeframe and will specify the reason(s) for return. If you need a receipt letter by a specific date (for example, to provid e to a local agency), we advise th at you submit your NOi thirty (30) days prior to the date the receipt letter is needed. Please do not call us to verify your NOI status. A copy of yo ur NOI receipt letter wi ll be available on our web page within twenty-four (24) hours of processing. Go to: http://esmr.swrcb.ca.gov/dwq/ConReceiptLetter.asp to retrieve an electronic copy of your NOI receipt letter. If you have any questions regarding this matter, pl ease contact us at (916) 341- 5537. NOTICE OF INTENT (NOI) TO COMPLY WITH THE TERMS OF THE GENERAL PERMIT TO DISCHARGE STORM WATER ASSOCIATED WITH CONSTRUCTION ACTIVITY GENERAL INSTRUCTIONS Who Must Submit Discharges of storm water associated with construction that results in the disturbance of one acre or more of land must apply for coverage under the General Construction Activities Storm Water Permit (General Permit). Construction activity which is a part of a larger common area of development or sale must also be permitted. (For example, if 4 acres of a 20-acre subdivision is disturbed by construction activities, and the remaining 16 acres is to be developed at a future date, the property owner must obtain a General Storm Water Permit for the 4-acre project). Construction activity includes, but is not limited to: clearing, grading, demolition, excavation, construction of new structures, and reconstruction of existing facilities involving removal and replacement that results in soil disturbance. This includes construction access roads, staging areas, storage areas, stockpiles, and any off-site areas which receive run-off from the construction project such as discharge points into a receiving water. Construction activity does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility. The owner of the land where the construction activity is occurring is responsible for obtaining a permit. Owners may obtain coverage under the General Permit by filing a NOI in accordance with the following instructions. Coverage for construction activity conducted on easements (e.g., pipeline construction) or on nearby properties by agreement or permission, or by an owner or lessee of a mineral estate (oil, gas, geothermal, aggregate, precious metals, and/or industrial minerals) entitled to conduct the activities, shall be obtained by the entity responsible for the construction activity. Linear construction projects which will have construction activity occurring in one or more than one Region should contact the State Water Resources Control Board at the number listed below prior to submitting an NOl application for specific information related to the use of the NOi form. Construction Activity Not Covered By This General Permit Storm water discharges in the Lake Tahoe Hydrologic Unit will be regulated by a separate permit(s) adopted by the California Regional Water Quality Control Board, Lahontan Region, and will not be covered under the State Water Resources Control Board's (SWRCB) General Permit. Storm water discharges on Indian Lands will be regulated by the U.S. Environmental Protection Agency. Where to Apply The NOI form, vicinity map, and appropriate fee must be mailed to the SWRCB at the fo llowing address: When to Apply State Water Resources Control Board Division of Water Quality Attn: Storm Water Permit Unit P.O. Box 1977 Sacramento, CA 95 812-1977 Property owners proposing to conduct construction activities subject to this General Permit must file a Notice oflntent prior to the commencement of construction activity. The annual fee is $700 for all construction sites submitting an NOL Checks should be made payable to: SWRCB. Completing the Notice of Intent (NOi) The submittal to obtain coverage under the General Permit must include a completed NOi Form (Notice oflntent, attached), a vicinity map, and the appropriate annual fee. The NOI must be completely and accurately filled out; the vicinity map and annual fee must be included with the NOi or the submittal is considered incomplete and will be rejected. A construction site is considered to be covered by the General Permit upon filing a complete NOJ submittal , and implementation of a defensible Storm Water Pollution Prevention Plan (SWPPP). Upon receipt of a complete NOI submittal, each discharger will be sent a receipt letter containing the waste discharger's identification (WDID) number. Questions? If you have any questions on completing the NOI please call the SWRCB at (916) 341-5537. 2 NOi-LINE-BY-LINE INSTRUCTIONS Please type or print when completing the NOi Form and vicinity map. SECTION 1--NOI STATUS Mark one of the two boxes at the top portion of the NOL Check box I if the NOI is being completed for new construction. Check box 2 if the NOI is being submitted to report changes for a construction site already covered by the General Permit. An example of a change that warrants a resubmittal of the NOi is a change of total area of the construction site. The permit is non-transferable, a change of ownership requires a Notice of Termination (NOT) submittal and a new NOi. Complete only those portions of the NOl that apply to the changes (the NOi must always be signed). If box 2 is checked, the WDJD number must be included. SECTION II--PROPERTY OWNER Enter the construction site owner's official or legal name and address; contact person (if other than owner), title, and telephone number. SECTION III--DEVELOPER / CONTRACTOR INFORMATION Enter the name of the developer's ( or general contractor's) official or legal name, address, contact person, title, and telephone number. The contact person should be someone who is familiar with the construction site and is responsible for compliance and oversight of the general permit. SECTION IV-CONSTRUCTION PROJECT INFORMATION Enter the project name, site address, county, city, ( or nearest city if construction is occurring in an unincorporated area), zip code, and telephone number (if any) of the construction site. Include an emergency contact telephone or pager number. Construction site information should include latitude and longitude designations, tract numbers, and/or mile post markers, if applicable. The site contact person should be someone who is familiar with the project, site plans, SWPPP, and monitoring program. All NOis must be accompanied by a vicinity map. Part A: Enter the total size in acres of all areas associated with construction activity, including all access roads. Part B: Enter the total size in acres of the area to be disturbed by construction activity and the percentage of the area I isted in Part A above that th is represents. Part C: Enter the percentage of the site that is impervious (areas where water cannot soak into the ground, such as concrete, asphalt, rooftops, etc.) before and after construction. Part D: Include tract numbers, if available. 3 Part E: Enter the mile post marker number at the project site location. Part F: Indicate whether the construction site is part of a larger common plan of development or sale. For example, if the construction activity is occurring on a two-acre site which is with in a development that is one acre or greater, answer yes. Part G: Enter the name of the development (e.g. "Quail Ridge Subdivision", "Orange Valley Estates", etc.). Part H: Indicate when construction wi ll begin (month, day, year). When a NOJ is being submitted due to a change in ownership, the commencement date should be the date the new ownership took effect. Part I: Indicate the percentage of the total project area to be mass graded. Part J: Enter the estimated completion dates for the mass grading activities and for the project completion. Part K: Indicate the type(s) of construction taki ng place. For example, "Transportation" should be checked for the construction of roads; "Utility" should be checked for installation of sewer, electric, or telephone systems. Include a description of the major construction activities, (e.g., 20 single family homes, a supermarket, an office building, a factory, etc.) SECTION V--BILLING ADDRESS To continue coverage under the General Permit, the annual fee must be paid. Indicate where the annual fee invoice should be mailed by checking one of the fo llowing boxes: Owner: sent to the owners address as it appears in Section II. Developer/Contractor: sent to the developer's address as it appears in Section III. Other: sent to a different address and enter that address in the spaces provided. SECTION VI--REGULATORY STATUS Indicate whether or not the site is subject to local erosion/sediment control ordinances. Indicate whether the erosion/sediment control plan designed to comply with the ordinance addresses the construction of infrastructure and structures in addition to grading. Identify the name and telephone number of the local agency, if applicable. 4 SECTION VII--RECEIVING WATER INFORMATION Part A: Indicate whether the storm water runoff from the construction site discharges indirectly to waters of the United States, directly to waters of the United States, or to a separate storm drain system. Indirect discharges include discharges that may flow overland across adjacent properties or rights-of-way prior to discharging into waters of the United States. Enter the name of the owner/operator of the relevant storm drain system, if applicable. Storm water discharges directly to waters of the United States will typically have an outfall structure directly from the facility to a river, lake, creek, stream, bay, ocean, etc. Discharges to separate storm sewer systems are those that discharge to a collection system operated by municipalities, flood control districts, utilities, or similar entities. Part B : Enter the name of the receiving water. Regardless of point of discharge, the owner must determine the receiving water for the construction site's storm water discharge. Enter the name of the receiving water. SECTION VIII--IMPLEMENTATION OFNPDES PERMIT REQUIREMENTS Part A: Indicate the status of the SWPPP, date prepared, or availability for review. Also indicate if a tentative construction schedule has been included in the SWPPP (the inclusion of a construction activity schedule is a mandatory SWPPP requirement). Part B: Provide information concerning the status of the development of a monitoring program, a component of the SWPPP which outlines an inspection and maintenance schedule for the proposed Best Management Practices (BMPs). Provide name and phone number of program preparer. Part C: Provide the name and phone numbers of the responsible party or parties designated to insure compliance with all elements of the General Permit and SWPPP. SECTION IX--VICINITY MAP AND FEE Provide a "to scale" or "to approximate scale" drawing of the construction site and the immediate surrounding area. Whenever possible, limit the map to an 8.5" x 11 ' or 11" x 17" sheet of paper. At a minimum, the map must show the site perimeter, the geographic features surrounding the site, and general topography, and a north arrow. The map must also include the location of the construction project in relation to named streets, roads, intersections, or landmarks. AN 01 containing a map which does not clearly indicate the location of the construction project will be rejected. Do not submit blueprints unless they meet the above referenced size limits. 5 SECTION X--CERTIFJCATIONS This section must be completed by the owner or signatory agent of the construction site*. The certification provides assurances that the NOJ and vicinity map were completed in an accurate and complete fashion and with the knowledge that penalties exist for providing false information. Certification also requires the owner to comply with the provisions in the General Permit. * For a corporation: a responsible corporate officer (or authorized individ ual). For a partnership or sole proprietorship: a general partner or the proprietor, respectively. For a municipality, State, Federal, or other public agency: either a principal executive officer, ranking elected official, or duly authorized representative. 6 APPENDIX E -CHANGE OF INFORMATION (COi) FORM CHANGE OF INFORMATION (COi) INSTRUCTIONS The discharger may terminate coverage for a portion of the project under this General Permit when ownership of a portion of this project has been transferred or when a phase within this multi-phase project has been completed . When ownership has transferred, the discharger must submit to its RWQCB a Change of Information Form (COi) with revised site map and the name, address and telephone number of the new owner(s). Upon transfer of title, the discharger should notify the new owner(s) of the need to obtain coverage under this General Permit. The new owner must comply with provisions of Sections A. 2. (c) and B. 2. (b) of the General Permit. To terminate coverage for a portion of the project when a phase has been completed, the discharger must submit to its RWQCB a COi with a revised map that identifies the newly delineated site. The COi is not to be confused with a NOi COi, which is a change of information that is on the original Notice of Intent. The NOi COi is used when the name, address or other information on the NOi has changed. A NOi COi should also be sent to its RWQCB. NEW OWNER INFORMATION AND CHANGE OF INFORMATION (COi) FORM FOR THE GENERAL CONSTRUCTION PERMIT NO. CAS000002 Owners Name: __________ _ Date: ______ _ WDID No.: Date of Last NOi Change: _____ _ Prepared By: Signature of Preparer: ______ _ Area Area Lot/Tract Contact Person Transferred Remaining Numbers and (acres)1 (acres)2 Transferred Company Name of column 1 column 2 NewOwner(s) 1 2 3 4 5 6 7 8 9 10 1Use approximate area (in acres) if no exact figure is available. 2Calculate running total in this column as follows: Enter in column 2, line 1, the area from NOi minus the area in column 1. Address(es) of the New Owner(s) Enter in column 2, line 2, the area in column 2, line 1, minus the area in line 2, column 1. Enter in column 2, line 3, the area in column 2, line 2, minus the area in line 3, column 1, and so forth. Phone# Is Date of of New Const/Post Ownership Owner Construction Transfer Complete? Yes/No APPENDIX F -NOTICE OF TERMINATION (NOT) FORM e Terry Tamminen Secretary for Environmental Protection State Water Resources Control Board Division of Water Quality 1001 I Street• Sacramento, California 95814 • (9 16) 341-5537 Mai ling Address: P.O. Box 1977 • Sacramento, Cali fornia • 958 12-1977 FAX (9 16) 341-5543 • Internet Address: http://www.swrcb.ca.gov To: Storm Water Permit Holder RE: NOTICE OF TERMINATION OF COVERAGE UNDER THE GENERAL CONSTRUCTION STORM WATER PERMIT (GENERAL PERMIT) Arnold Schwarzenegger Governor In order for us to termin ate your coverage under the General Permit, please complete and submit the enclosed Notice of Termination (NOT) your local Regional Water Quality Control Board (RWQCB). Refer to the last page of the NOT packet for RWQCB locations. Please note that you are subject to the annual fee until you file a NOT and the RWQCB approves your NOT. Should you have any questions regarding this matter, please contact your local R WQCB at the number listed on the back page of the NOT package, or the Storm Water Unit at (916) 341-5537. Sincerely, Storm Water Unit Division of Water Quality Enclosure State of California State Water Resources Control Board NOTICE OF TERMINATION OF COVERAGE UNDER THE NPDES GENERAL PERMIT NO. CAS000002 FOR DISCHARGES OF STORM WATER ASSOCIATED WITH CONSTRUCTION ACTIVITY Submission of this Notice of Termination constitutes notice that the owner (and his/her agent) of the site identified on this form is no longer authorized to discharge storm water associated with construction activity by NPDES General Permit No. CAS000002. I. WDID NO. II. OWNER COMPANY NAME CONTACT PERSON STREET ADDRESS TITLE CITY STATE ZIP PHONE Ill. CONSTRUCTION SITE INFORMATION A. DEVELOPER NAME CONT ACT PERSON STREET ADDRESS TITLE CITY CA ZIP PHONE B. SITE ADDRESS COUNTY CITY CA ZIP PHONE IV. BASIS OF TERMINATION 1. The constructi on project is complete and the following conditions have been met. -All elements of the Storm Water Pollution Prevention Plan have been completed. -Construction materials and waste have been disposed of properly. -The site is in compliance with all local storm water management requirements. -A post-construction storm water operation and management plan is in place. Date of project completion __ / __ / __ 2. Construction activities have been suspended, either temporarily __ or indefinitely __ and the following conditions have been met. -All elements of the Storm Water Pollution Prevention Plan have been completed. -Construction materials and waste have been disposed of properly. -All denuded areas and other areas of potential erosion are stabilized. -An operation and maintenance plan for erosion and sediment control is in place. -The site is in compliance with all local storm water management requirements. Date of suspension __ / __ / __ _ Expected start up date __ / __ / __ __ 3. Site can not discharge storm water to waters of the Un ited States (check one). All storm water is retained on site. __ All storm water is discharged to evaporation or percolation ponds offsite. ___ 4. Discharge of storm water from the site is now subject to another NP DES general permit or an individual NPDES permit. NPDES Permit No. ____ Date coverage began __ / __ / __ 5. There is a new owner of the identified site. Date of owner transfer __ / __ / __ Was the new owner notified of the General Permit requirements? YES NO NEW OWNER INFORMATION COMPANY NAME STREET ADDRESS CONTACT PERSON TITLE =C~ITY~---------~S~T~A~T=E ___ =Z~IP ____ PH ONE V. EXPLANATION OF BASIS OF TERMINATION (Attach site photographs -see instructions). VI. CERTIFICATION: I certify under penalty of law that all storm water discharges associated with construction activity from the identified site that are authorized by NPDES General Permit No. CAS000002 have been eliminated or that I am no longer the owner of the site. I understand that by submitting this Notice of Termination , I am no longer authorized to discharge storm water associated with construction activity under the general permit, and that discharging pollutants in storm water associated with construction activity to waters of the United States is unlawful under the Clean Water Act where the discharge is not authorized by a NPDES permit. I also understand that the submittal of this Notice of Termination does not release an owner from liability for any violations of the general permit or the Clean Water Act. ~P~R~IN~T=E=D~N~A=M=E~-------------TITLE ~S~IG~N~A~T~U~R=E~: ______________ DATE __ / __ / __ REGIONAL WATER BOARD USE ONLY This Notice of Termination has been reviewed, and I recommend termination of coverage under the subject NPDES general permit. Printed Name ______________ _ Region No. ___ _ Signature Date __ / __ / __ Who May File State of California State Water Resources Control Board INSTRUCTIONS FOR COMPLETING NOTICE OF TERMINATION FOR CONSTRUCTION ACTIVITY Dischargers who are presently covered under NPDES General Permit No. CAS000002 for discharge of storm water associated with construction activity may submit a Notice of Termination when they meet one of the following criteria. 1. The construction project has been completed and the following conditions have been met: all elements of the Stormwater Pollution Prevention Plan have been completed; construction materials and equipment maintenance waste have been disposed of properly; the site is in compliance with all local storm water management requirements includ ing erosion/sediment control requirements and the appropriate use permits have been obtained; and a post-construction storm water operation and management plan is in place. 2. Construction activities have been suspended, either temporarily or indefinitely and the following conditions have been: all elements of the Stormwater Pollution Prevention Plan have been completed ; construction materials and equipment maintenance waste have been disposed of properly; all denuded areas and other areas of potential erosion are stabilized; an operation and maintenance plan for erosion and sediment control is in place; and the site is in compliance with all local storm water management requirements including erosion/sediment control requirements. The date construction activities were suspended, and the expected date construction activities will start up again should be provided. 3. Construction site can not discharge storm water to waters of the United States. Please indicate if all storm water is retained on site or if storm water is collected offsite. 4. Discharge of construction storm water from the site is now subject to another NP DES general permit or an individual NPDES permit. The general permit or individual permit NPDES number and date coverage began should be provided. 5. There is a new owner of the identified site. If ownership or operation of the facility has been transferred then the previous owner must submit a Notice of Termination and the new owner must submit a Notice of Intent for coverage under the general permit. The date of transfer and information on the new owner should be provided. Note that the previous owner may be liable for discharge from the site until the new owner files a Notice of Intent for coverage under the general permit. Where to File The Notice of Termination should be submitted to the Executive Officer of the Regional Water Board responsible for the area in which the facility is located. See attached. If the Executive Officer, or his designated staff, agrees with the basis of termination , the Notice of Termination will be transmitted to the State Water Board for processing. If the Executive Officer, or his designated staff, does not agree with the basis of termination, the Notice of Termination will be returned . The Regional Water Board may also inspect your site prior to accepting the basis of termination. LINE-BY-LINE INSTRUCTIONS All necessary information must be provided on the form. Type or print in the appropriate areas only. Submit additional information , if necessary, on a separate sheet of paper. SECTION 1--WDID NO. The WDID No. is a number assigned to each discharger covered under the General Permit. If you do not know your WDID No., please call the State Water Board or Regional Water Board and request it prior to submittal of the Notice of Termination. SECTION 11--OWNER Enter the owner of the construction site's official or legal name (This should correspond with the name on the Notice of Intent submitted for the site), address of the owner, contact person, and contact person's title and telephone number. SECTION 111--CONSTRUCTION SITE INFORMATION In Part A, enter the name of the developer (or general contractor), address, contact person, and contact person's title and telephone number. The contact person should be the construction site manager completely familiar with the construction site and charged with compliance and oversight of the general permit. This information should correspond with information on the Notice of Intent submitted for the site. In Part B, enter the address, county, and telephone number (if any) of the construction site. Construction sites that do not have a street address must attach a legal description of the site. SECTION IV--BASIS OF TERMINATION Check the category which best defines the basis of your termination request. See the discussion of the criteria in the Who May File section of these instructions. Provide dates and other information requested. Use the space under Explanation of Basis of Termination heading. SECTION V--EXPLANATION OF BASIS OF TERMINATION Please explain the basis or reasons why you believe your construction site is not required to comply with the General Permit. To support your explanation, provide a site map and photograph of your site. SECTION VI--CERTIFICATION This section must be completed by the owner of the site. The Notice of Termination must be signed by : For a Corporation: a responsible corporate officer For a Partnership or Sole Proprietorship: a general partner or the proprietor, respectively. For a Municipality, State, or other Non-Federal Public Agency: either a principal executive officer or ranking elected official. For a Federal Agency: either the chief or senior executive officer of the agency. STATE AND REGIONAL BOARD CONT ACT LIST Contact L ist is located at www.swrcb.ca.gov/stormwtr/contact.html under Contacts APPENDIX G -WATER POLLUTION CONTROL DRAWINGS APPENDIX H -NOTIFICATION OF ANTICIPATED NON-COMPLIANCE Storm Water Pollution Prevention Plan NOTIFICATION OF ANTICIPATED NON-COMPLIANCE Project Name WDID Number In accordance/compliance with the State Water Resources Control Board (SWRCB) Order No. 2009-0009-DWQ , National Pollutant Discharge Elimination System (NPDES) General Permit No. CAS000002 Waste Discharge Requirements for Discharges of Storm Water Runoff Associated with Construction and Land Disturbance Activities, the following discharge is anticipated: Nature of planned change in construction activity that may result in non-compliance with CGP requirements: Date, time, and location of anticipated discharge: Name of LRP * Title Company Telephone Number Signature Date *or approved signatory. 1 of 1 APPENDIX I -INVENTORY OF POTENTIAL POLLUTANT SOURCES PLANNED TO BE USED OR STORE AT THE PROJECT SITE Storm Water Pollution Prevention Plan INVENTORY OF POTENTIAL POLLUTANT SOURCES PLANNED TO BE USED OR STORE AT THE PROJECT SITE Project Name WDID Number Date: • Conduct an inventory of the products used and/or expected to be used and the end products that are produced and/or expected to be produced at the site. Typical Materials Quantity Physical Characteristics Location and Distance to Storm Drain Handled, Produced, Stored, (e.g., gal, lbs , oz) (e.g., liquid, powder, solid) Containment Inlet/Receiving Waters Recycled, or Disposed of at the Site 1 of 2 Storm Water Pollution Prevention Plan Inventory of Potential Pollutant Sources Planned to be Used or Store at the Project Site Based on the table above, describe the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water (ie proximity to storm drain inlets or receiving waters). Describe BMPs implemented to address these pollutant sources below: Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non-storm water discharges. This shall include an assessment of past spills or leaks, non-storm water discharges, and discharges from adjoining areas Based on the inventory and evaluation above, describe the anticipated pollutants for the project below and include these analytes in the Monitoring & Reporting Program (M&RP) in Appendix X of the SWPPP. 2 of 2 APPENDIX J -ANNUAL REPORT(S) This section contains hard copied of reports to be submitted digitally on annual basis: • Completed Site Inspection Logs • Completed NAL Exceedance Reports, if applicable • Completed Emergency Release Form 304, if applicable • Completed Training Logs • Completed Test Sampling Logs (Turbidity and pH), if applicable • Completed Chain of Custody Forms • Completed Laboratory Reports • Completed ATS Records (if applicable), including jar and laboratory test results, toxicity monitoring, and training • Approved SWPPP Amendments • Completed Visual Observation Inspection Form • Completed Inventory of Potential Pollutant • Completed Notification of Non-compliance, if applicable I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted . Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. LRP Signature Date QSD Signature Date APPENDIX K -LIST OF CONTRACTORS AND SUBCONTRACTORS AND QSP CERTIFICATES List of Contractors and Subcontractors This is a list of contractors or subcontractors that will be responsible for the implementation of the SWPPP on the project site through the nature of the construction activity in which they are involved. The list is as complete as possible at the initial date of preparation of the SWPPP and will be amended periodically as additional contractors are subcontractors are involved. The contractors or subcontractors have also been provided with a copy of the sections of the SWPPP that indicates the recommended good housekeeping practices and control measures. Contractors and Subcontractors Contractor/ Subcontractor Contact Person I Activity Start Date End Date Name and Address Phone Number Civil Landworks David Caron, QSD/QSP QSD / QSP 5/15/19 5/15/20 110 Copperwood Way Suite P (760) 746-4955 Oceanside, CA 92058 Q!JAL I Fl INI CALlfORNIA CONSTR UCTION GIENERA.L PERM n -WPPP OEV'ELOP1ER ( AND ITIONER ( David Caron Oct 16, 2017 -Oct 29, 2019 Certificate # 00306 ,0) ·,p) CaUft>rn i a Sto rmw.at,er QuaUty Assod,ation and Callifornia Construction G1eneral Permit Training Team APPENDIX L -LIST OF RESPONSIBLE PARTIES List of Responsible Parties This is a list of Responsible Parties that will be responsible for the implementation of the SWPPP on the project site through the nature of the construction activity in which they are involved. Whenever changes occur, the Contractor will update the list. Responsible Parties Contact Person / Title Company/Address Phone Number Owner Ben Ryan Legally Responsible Person (858) 794-1900 Civil Landworks 110 Copperwood Way David Caron QSD/QSP Suite P Oceanside, CA (760) 7 46-4955 92058 APPENDIX M -SWPPP AMENDMENT LOG SWPPP Amendment Log Amendment Description Date: QSD Name (print): QSD Signature: Date: QSD Name (print): QSD Signature: Date: QSD Name (print): QSD Signature: Date: QSD Name (print): QSD Signature: Date: QSD Name (print): QSD Signature: Date: QSD Name (print): QSD Signature: Date: QSD Name (print): QSD Signature: Page __ of __ APPENDIX N -TRAINING LOG Training Logs Date: Attendees: Subject of Training: Training By: APPENDIX O -SITE INSPECTION FORM SITE INSPECTION REPORT GENERAL PERMIT CONSTRUCTION ACTIVITIES Page 1 of 4 Project Information Project Name: Inspection Date: Project Location: ______________ Inspection Time: WDID#: Stage of Construction / Type of Activity: Type of Inspection and Weather Information D Routine Inspection D Storm Event Inspection, circle: Prior 24-hr Interval After Start of Storm Event:__________ Rainfall Amount: End of Storm Event: __________ Time Since Last Storm Event: ______ _ SWPPP Inspection Notes Item Activity Yes No N/A Notes No. Does the SWPPP contain all the required information? 1. Are the SWPPP Maps on the wall and kept current reflecting the status of the project and the location of all BMPs? Field Inspection Notes Item Activity Yes No N/A Notes/Corrective Measures No. Taken/Follow Up Measures Are there any exposed areas that require 2. temporary or permanent stabilization including seeding or mulching? If yes, identify locations below 2a Location: 2b Location: Is there any evidence that sediment is leaving 3. the site? Is there any evidence that sediment is damaging adjacent property? If yes, identify the locations below. 3a Location: 3b Location Item No. 4. 4a 4b 5. 5a 5b 6. 7. 7a 7b 8. 8a 8b 9. 10. 11. SITE INSPECTION REPORT GENERAL PERMIT CONSTRUCTION ACTIVITIES Page 2 of 4 Activity Yes No N/A Notes/Corrective Measures Taken/Follow Up Measures Are all perimeter and internal sediment-trapping measures in place and operating correctly? D Silt fences D Gravel Bags D Check dams D Other If no, identify the locations below. Location: Location Are inlets and outlets or major discharge points properly maintained? If no, identify the locations below Location: Location Are all desilting basins called for on the plan; installed in the proper location; and functioning in accordance with minimum standards? Are all cut and fill slopes adequately stabilized? If no, identify the locations below Location: Location Are all onsite drainage channels and outlets adequately stabilized, maintained, and free of debris? If no, identify the locations below Location: Location Is there a stabilized construction entrance for the site? Is maintenance required for the stabilized entrance? Is there any evidence of mud, or dirt track-out on public roads; at intersections with public roads? Item No. 12. 13. 14. 15. 16. 17. 18. SITE INSPECTION REPORT GENERAL PERMIT CONSTRUCTION ACTIVITIES Page 3 of 4 Activity Yes No N/A Notes/Corrective Measures Taken/Follow Up Measures Is there a fueling area onsite? If so, is it delineated on the Site Map? Is there secondary containment for the fueling area? Are the fuel tanks placed on grade? Is the fuel ing area placed on a low-point where concentrated flow can potentially deliver storm water? Is there a heavy vehicle staging area , is it shown on the Site Map and are drip pans or other measures in place? Is there a concrete wash out area, is it being used and is it shown on Site Map? Are portable toilets protected from potential spills and placed properly? Are trash receptacles/bins provided and being used? Is work area reasonably free of trash and debris? Are sidewalks/streets maintained or swept from construction debris/dirt? Do stockpiles have covers and or perimeter protection? SITE INSPECTION REPORT GENERAL PERMIT CONSTRUCTION ACTIVITIES Page 4 of 4 Non-Storm Water Discharges and Non-Visible Pollutants Inspection Notes* Item Activity Yes No N/A Notes/Corrective Measures Taken No. Are all potential non-visible pollutants in water- 19. tight containers and are there any visible signs of leaks or spills? Any associated odors? * Failure to confirm the safe status of non-visible pollutants may trigger sampling of storm water discharge. Other Items Item Activity Yes No N/A Notes No. Any additional local agency requirements? 20. Agency Name: QSP Certification Signature: Date: 1 Printed Name/Title: --------------Phone: _________ _ (Attach any site photographs as appropriate) 1 Can be an approved designee of the QSP that has received appropriate training in SWPPP field implementation Rain Gauge Log Sheet Construction Site Name: WDID#: Date Time Initials Rainfall Depth Notes: (mm/dd/yy} (24-hr} (Inches} Visual Inspection Field log Sheet Date and Time of Inspection: I Report Date: Inspection Type: □ Weekly □ Before □ During □ □ □ Quarterly predicted rain rain Following Contained non-storm event qualifying storm water rain water event release Site Information Construction Site Name: Construction stage and I Approximate area completed activities: of exposed site: Weather and Observations Date Rain Predicted to Occur: Predicted% chance of rain: Estimate storm beginning: Estimate storm Estimate time Rain gauge duration: since last storm: reading: (date and time) (hours) (inches) (d ays or hours) Observations: If yes identify location Odors Yes □ No □ Floating material Yes □ No o Suspended Material Yes □ No □ Sheen Yes □ No □ Discolorations Yes □ No □ Turbidity Yes □ No □ Site Inspections Outfalls or BMPs Evaluated Deficiencies Noted (add additional sheets or attached detailed BMP Inspection Checklists) Photos Taken: I Yes □ No □ I Photo Reference IDs: Corrective Actions Identified (note if SWPPP change is Date Implemented needed) Inspector Information Inspector Name: Inspector Title: Signature: I Date: Contingency Effluent Sampling Field log Sheets Construction Site Name: Date: Time Start: Sampler: Sampling Event Type: □ Storm water □ Non-storm water □ Non-visible pollutant Field Meter Calibration pH Meter ID No./Desc.: Turbidity Meter ID No./Desc.: Ca libration Date/Time: Calibration Date/Time: Field pH and Turbidity Measurements Discharge Location Description pH Tu rbidity Time Grab Samples Collected Discharge Location Description Sample Type Time Additional Sampling Notes: Time End: NAL Exceedance Evaluation Summary Report Page -of - Project Name Project WDID Project Location Date of Exceedance NAL Daily Average □PH 0 Turbidity NEL Daily Average □PH 0 Turbidity Type of Exceedance D Other (specify) D Field meter (Sensitivity: ) Measurement or Analytical D Lab method (specify) Method (Reporting Limit: l (MDL: l D pH_ pH units Calculated Daily Average 0 Turbidity_NTU Rain Gauge Measurement inches Compliance Storm Event inches (5-year, 24-hour event) Visual Observations on Day of Exceedance Description of BMPs in Place at Time of Event Initial Assessment of Cause Corrective Actions Taken (deployed after exceedance) Additional Corrective Actions Proposed Report Completed By (Print Name, Title) Signature Project: Date: Location: Parameter Turbidity pH SSC Other: Date Time BMP Associated with the Effluent Samples Proposed NUMERIC ACTION LEVEL (NAL) EXCEEDANCE REPORT WDID: Time: Analyte Information Measured Units NAL Test Method Detection Limit Value Sample Information Visual Observations & Measurements BMP Information Corrective Actions Certification "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Signature: Date: Printed Name: ________________ _ Phone: __________ _ Title: APPENDIX P-VISUAL OBSERVATION INSPECTION FOR NON-STORM WATER DISCHARGE Storm Water Pollution Prevention Plan Visual Observation (Inspection) Form for Non-Storm Water Inspect each drainage area for the presence of (or indications of prior) unauthorized and authorize non-storm water discharges and their sources Project Name WDID Number: Date and Time of Inspection Current Weather Conditions Name of Inspector Inspector's Company/Title QSP's Signature A visual observation (inspection) must document the presence or evidence of any non- storm water discharge (authorized or unauthorized). Were any of these discharges observed at the time of the inspection? □YES O NO If yes, describe the discharge, their source and response taken to eliminate unauthorized non-storm water discharges and to reduce or prevent pollutants from contacting non-storm water discharges 1 of 2 Storm Water Pollution Prevention Plan Non-Storm Pollutant Water Characteristics Characteristic Observation (Circle one) Discolorations Clear Brown Gray Yellow Red Other Turbidity Clear Cloudy Opaque Floating or Suspended None Vegetation Mulch Materials? Trash Foam Other Sheen None Slight Heavy Any observed None Sewage Other pollutants? Possible sources? Were samples collected? 0 YES. 0 NO Reason : If yes, refer to Appendix XI for sampling information. 2 of 2 APPENDIX Q -SAMPLE EMERGENCY RELEASE FORM 304 EMERGENCY RELEASE FOLLOW -UP NOTICE REPORTING FORM - /l BUSINESS NAME 1~1 FACILITY EMERGENCY CONTACT & PHONE NUMBER ( ) - e I INCIDENT MO DAY YR 1l'l TIME DATE I I I I I I NnOTI~~~n l I 11 OES I I l (use24hrtime) CONTROLNO. I I I I I I I C t,I INCIDENT ADDRESS LOCATION ~ l~CITY / COMMUNITY u COUNTY ZIP -,.. CHEMICAL OR TRADE NAME (print cr type) 11 CAS Number - CHECK IF CHEMICAL IS LISTED IN □ 11 CHECK IF RELEASE REQUIRES NOTIFI -□ ,~. 40 CFR 355, APPENDIX A CATION UNDER 42 U.S C. Section 9603 (a) PHYSICAL STATE CONTAINED I PHYSICAL STATE RELEASED ,~, QUANTITY RELEASED □ SOLID □LIQUID □GAS OsoLID DLIQUID □GAS ENVIRONMENTAL CONTAMINATION ,,,1 TIME OF RELEASE ,.~ DURATION OF RELEASE . □AIR □wATER 0GROUND00THER -DAYS-HOURS--MINUTE -- ACTIONS TAKEN 1l E " .; -~· . ~ ~ KNOWN OR ANTICIPATED HEALTH EFFECTS (Use the commen1s section for addition infcrmation) lili □ ACUTE OR IMMEDIATE (explain) : □ CHRONIC OR DELAYED (explain) [1. □ NOTKNOWN (explain) ~ f'i ADVICE REGARDING MEDICAL ATTENTION NECESSARY FOR EXPOSED INDIVIDUALS Ill ij -rt\! COMMENTS (INDICATE SECTION (A-G)AND ITEM \i\JITH COMMENTS OR ADDITIONAL INFORMATION) a l ~ m I~ i!/1 ~ ~ " CERTIFICATION: I certify under penalty of law that I have personally examined and I am familiar with the information submitted and believe the sub milled information is true, acrurate, and romp lete. 11! REPORTING FACILITY REPRESENTATIVE (print or type) I SIGNATURE OF REPORTING FACILITY REPRESENTATIVE DATE EMERGENCY RELEASE FOLLOW-UP NOTICE REPORTING FORM INSTRUCTIONS (This form may be reproduced, as needed) GENERAL INFORMATION: Chapter 6.95 of Division 20 of the California Health and Safety Code requires that written emergency release follow-up notices prepared pursuant to 42 U.S.C. § 11004, be submitted using this reporting form. Non-permitted releases of reportable quantities of Extremely Hazardous Substances (listed in 40 CFR 355, appendix A) or of chemicals that require release reporting under section I 03(a) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 [42 U.S.C. § 9603(a)] must be reported on the form, as soon as practicable, but no later than 30 days, following a release. The written follow-up report is required in addition to the verbal notification. BASIC INSTRUCTIONS: • The form, when filled out, reports follow-up information required by 42 U.S.C § 11004. Ensure that all information requested by the form is provided as completely as possible. • If the incident involves reportable releases of more than one chemical, prepare one report form for each chemical released. • If the incident involves a series of separate releases of chemical(s) at different times, the releases should be reported on separate reporting forms. SPECIFIC INSTRUCTIONS: Block A: Enter the name of the business and the name and phone number of a contact person who can provide detailed facility information concerning the release. Block B: Enter the date of the incident and the time that verbal notification was made to OES. The OES control number is provided to the caller by OES at the time verbal notification is made. Enter this control number in the space provided. Block C: Provide information pertaining to the location where the release occurred. Include the street address, the city or community, the county and the z ip code. Block D: Provide information concerning the specific chemical that was released. Include the chemical or trade name and the Chemical Abstract Service (CAS) number. Check all categories that apply. Provide best available information on quantity, time and duration of the release. Block E: Indicate all actions taken to respond to and contain the release as specified in 42 U.S.C. § l 1004(c). Block F: Check the categories that apply to the health effects that occurred or could result from the release. Provide an explanation or description of the effects in the space provided. Use Block H for additional comments/information if necessary to meet requirements specified in 42 U.S.C. § 11004(c). Block G: Include information on the type of medical attention required for exposure to the chemical released. Indicate when and how this information was made available to individuals exposed and to medical personnel, if appropriate fo r the incident, as specifi ed in 42 U.S.C. § I l004(c). Block H: List any additional pertinent information. Block I: Print or type the name of the facility representative submitting th e report. Include the official signature and the date that the form was prepared. MAIL THE COMPLETED REPORT TO: Chemical Emergency Planning and Response Commission (CEPRC) / Attn: Section 304 Reports Hazardous Materials Unit P.O. Box 419047 Rancho Cordova, CA 95741-9047 NOTE: Authority cited: Sections 25503, 25503.l and 25507.1, Health and Safety Code. Reference: Sections 255 03(b)(4), 25503.l, 25507.1, 25518 and 25520, Health and Safety Code. APPENDIX R -TEST SAMPLING LOG ID Notes: (a) (b) (c) Test Sample Log Company Name Project Name Project Location Location Sample Collection Sample Preservation Test Custody Transfer Collection Detection Date Time Method Method Method Limit Notes Date Time A sample reference number may be assigned for identification and tracking purposes. Use this reference number to identify a specific test sample in all test sample records, including the chain of custody log. See the site map (Appendix G) for the test sample location identification. If you are taking a test sample at a location not identified on the storm water sampling location map, describe in this location or annotate the map to indicate the sample location. The chain of custody log (Appendix J) is to be completed by both parties at the time of transfer of custody of a test sample. Enter the date and time of that transfer of custody here. Do not relinquish custody of a test sample without completing this form at the time of custody transfer. APPENDIX S -SOILS REPORT AND WATERSHED AND 303D LIST INFORMATION 33° 9' 39" N 33° 9' 26" N al i 8 i I I I I ; Hydrologic Soil Group-San Diego County Area, California (Magnolia Ave) 468820 468800 4600<IO 4roXO ~ ■ ••\ \ 'l~c i!l ~-\ f, '.··,~. ·'.·•·t\J 19,::s: / ,-,.,< '-. ,:,. • ~ '_ -_· ---~-~ . .. . . ·. -:>o.:_.. '-:?· -·"' \ ,." "':;~-· ··' · MIE \ --~:--,~,,, \' ~-t11> ·"1-. . ·, ti; ,.,...... ,~, •·, '_,:,......... /,. ' . . V \ _,f' s.~ " ' .. , . ., "' r, \()' .1 \1.:.i.--..,,, \ ~· 1 1.-,. ,.:).,~ .:;-.,1 12, < / \ ' " ... ...,. .,.,, -=>o, ~'J • I () • ·, . ~ ' MIC '\ • ,_ C 4!:l3l'O 4ffi120 469100 400240 4633'.XJ 4fm'O 469420 -. ,,. , ~ \, . -DI ■ ' ,,, : ~ /)' >~t:/t . :;;-.,,\ . ~. .,,, :,.~ ~-' 1::} .· •. ' ~-\( •. ' ' --~ ~~-,.. ~ . ' ' '"""' ' " . '"' ;.,,;;.-, ,. ' \ .. ... ' ~ ,.,,io~,, A •~ '. ... ,,• .~: • \ ·•., '/ ~• ,~ ' , "• , I . : ~ ' / ]., ., ,.,, . : .,,'~: . \ . ~ -~~ ,.;t-'.-:; -\" ·-~ .. ~··· ,~, ~ ' .,,., \o ,. .. .. \: ' \ -~r ' ·,, . . . '~L\\ MIC 1'ffi'.'/~, ~-~' •r•~ f,A,, , 4 -'-\ (~·-· .• ·:_,_·::~---. -✓ ,,,. ?!f','/'lf..<°ii' /'"/ C. ' ·-.~,\l,i, \ ✓~,,.,• ,./ ~ . ,_ \_ ·o\'..;~-!: .• 1f J.\. ••' y• \ ' . ,v~,i,QJ('. .. _,., ~_-_•·_"· ·,._·' \ ··• .. ~ .,.,. ~-:!'< '! ~ '~ . \\ •. '.!:.:; •·.~~·· .··<: ·. -. ' • l I \ .<\''{'\. l,l._;;,i, I -. , \ -1· \ \. ~ ~ , ~. ,, \\ '\. ~.,. ··•.--..-.:-~-... •; -. -•~, . ., l , ".. \\\ .. .... -: ; \' . --I.., ...-· . .;, _.Al.__··~ .. ~ § ' al i 8 i I I I I all ._11'-~-< .. -~-•' ... ~. ~--l •.. , ~ I ·r,-~--.. -1· · __ :J ;"f'."':;.::...~~ 1\· . •~·-.. (1~_.,..._ ,_ •• ·_-. . ·•··· (j ,', ~··\,, .,_ " \"':' ·,.-._.,, ... i: l ~ . . ~-• _ · _; J~i jl .; ; \~ ~.;,. . • ·-, "' ~ •• ,,-• :i. _.:.Gil 468820 ~ ,, isl \ A 461' J 4roXO ,m:ro Map Scale: 1:2,800 if prir. ~ on A landscape (11" x 8.5") sheet M~~:~~:;;~~~~~,:::;:;,;,:,:_..:,_;~~========~Meters • 240 0 40 00 160 ---===------.c======Feet 0 100 200 400 OCO Map projection: Web Merratnr Corner roordinates: WGS84 Edge tics: UlM Zone llN WGS84 4ffi120 469100 400240 4003:Il 4fm'O 469<120 ~ ~ ~ s USDA Natural Resources Web Soil Survey National Cooperative Soil Survey 12/26/2017 Page 1 of 4 7iiiii Conservation Service 33° 9' 39" N 33° 9' 26~ N Hydrologic Soil Group-San Diego County Area, California (Magnolia Ave) MAP LEGEND MAP INFORMATION Area of Interest (AOI) -. i__.J Soils Area of Interest (AOI) Soil Rating Polygons DA D N D D B D BID D C D CID D D D Not rated or not available Soil Rating Lines A ND .-B .-BID C CID D ,. ,. Not rated or not available Soil Rating Points [J A [J N D II B ■ BID USDA Natural Resources "iiiiiii Conservation Service □ C □ CID [J D □ Not rated or not available Water Features Streams and Canals Transportation t-t-+ -- Rails Interstate Highways US Routes Major Roads Local Roads Background • Aerial Photography Web Soil Survey National Cooperative Soil Survey The soil surveys that comprise your AOI were mapped at 1 :24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: San Diego County Area, California Survey Area Data: Version 12, Sep 13, 2017 Soil map units are labeled (as space allows) for map scales 1 :50,000 or larger. Date(s) aerial images were photographed: Nov 3, 2014-Nov 22, 2014 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 12/26/2017 Page 2 of 4 Hydrologic Soil Group-San Diego County Area, California Hydrologic Soil Group Map unit symbol Map unit name Rating CgC Chesterton-Urban land D complex, 2 to 9 percent slopes MIC Marina loamy coarse B sand, 2 to 9 percent slopes MIE Marina loamy coarse B sand, 9 to 30 percent slopes Totals for Area of Interest USDA Natural Resources 7iF Conservation Service Web Soil Survey National Cooperative Soil Survey Acres in AOI 7.9 16.7 8.1 32.7 Magnolia Ave Percent of AOI 24.2% 51.0% 24.8% 100.0% 12/26/201 7 Page 3 of 4 Hydrologic Soil Group-San Diego County Area, California Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, 8, C, and D) and three dual classes (A/0, 8/0, and C/0). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group 8. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/0, 8/0, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher USDA Natural Resources _.fiF Conservation Service Web Soil Survey National Cooperative Soil Survey Magnolia Ave 12/26/2017 Page 4 of 4 11/20/2018 Water Quality Planning Tool l},l ,FORNI £ f-P.~R n.1r I )f TRANSPORTATION Caltrans > DEA > Stormwater > Water Quality Planning Tool Layers ... 303(d) List and TMDLs 2014-2016 (Legend) Areas of Special Biological Significance Arid and Semi-Arid Regions Caltrans J Districts 1 Caltrans Facilities Caltrans Tie 1 Monitorini Sites Calwater Watersheds Coastal Zone Counties Geologic ~ Map (Legend) High Risk Receiving Watersheds Monthly Precipitatior ,.. ► Information Hover over a layer name for a description. Additional information, tables, coordinates, and links are below the map. HelP.. Go gle ll---ie 9 0-v' r'r-~s~ American Glass '-' & Mirror Co Watershed Information CALWATER WATERSHED 1534 Magnolia Avenue, Carl: Carlsbad Village Academy 0 I"', L .I Postmile Lookup PM Click PM Point PM Line - Po lka Dot Whirnsy 9 ~-::, ~ tJ;. El 9 El Valley Middle School Map Report a map error Hydrologic Unit Hydrologic Sub-Area Name CARLSBAD El Saito Hydrologic Area Planning Watershed Buena Vista Creek 4904210000 Hydrologic Sub-Area # HSA Area (acres) 904.21 7464 Latitude, Longitude 33.1595, -117.3313 http://svctenvims.dot.ca.gov/wqpt/wqpt.aspx 1/3 11/20/2018 Water Quality Planning Tool WATERSHED BOUNDARY DATASET I Watershed San Marcos Creek-Frontal Gulf of Santa Catalina Subwatershed Loma Alta Creek-Frontal 1a 180703030504 Gulf of Santa Catalina __ _ Average Annual Precipitation (inches) 11.88 TMD Ls_&_303(d)_ Listed Water_Bodies_ (20 14_ -. 20 16 _ List) ................... _ ........... _ ......... -.... _ ... _ .. _ .. _. Key: Water body on 303(d) list Water bod with a TMDL Name Pollutant Buena Vista Creek Benthic Community Effects Bifenthrin Buena Vista Creek Selenium Toxicity Buena Vista Lagoon Indicator Bacteria Buena Vista Lagoon Buena Vista Lagoon Sedimentation/Siltation Buena Vista Lagoon Toxicity -11 .23 Miles 11.23 Miles 11.23 Miles 11 .23 Miles Status TMDL required TMDL required TMDL required TMDL required Acres TMDL required Acres TMDL required 202.3 Acres TMDL required 202.3 Acres TMDL required ~~~~.~.Q-~-~-~~ .. 9.~J~~~~~~·------····-······························"···········-·-----··········-"--······-·--··-···"········"'···--.. ,,_. _____ ,_,_. The following waterbodies are in or near HSA 904.21 . Click on the waterbody to get information on water quality objectives and beneficial uses Waterbody Name Agua Hedionda Creek === Agua Hedionda Creekv Agua Hedionda Lagoon Beneficial Uses AGR, IND, MUN, REC1, REC2, WARM, WILD Sediment-Sensitive Waterbody False False AQUA, COLD, COMM, EST, IND, MAR, MIGR, RARE, REC1, REC2, SHELL, False WILD Buena Vista Creek AGR, IND, REC1, REC2, WARM, WILD False False Buena Vista Creek AGR, IND, RARE, REC1 , REC2, WARM, WILD Buena Vista Lagoon BIOL, EST, MAR, RARE, REC1, REC2, WARM, WILD False COMM, IND, MAR, MIGR, NAV, RARE, REC1, REC2, SHELL, SPWN, WILD False COMM, IND, MAR, MIGR, NAV, RARE, REC1 , REC2, SHELL, SPWN, WILD False Letterbox CanY.on AGR, IND, MUN, REC1, REC2, WARM, WILD False Mission BaY. COMM, EST, IND, MAR, MIGR, RARE, REC1 , REC2, SHELL, WILD False COMM, IND, MAR, MIGR, NAV, RARE, REC1 , REC2, SHELL, SPWN, WILD False AQUA, BIOL, COMM, IND, MAR, MIGR, NAV, RARE, REC1, REC2, SHELL, SPWN, WILD -==;_:;====~- San Diego BaY. BIOL, COMM, EST, IND, MAR, MIGR, NAV, RARE, REC1, REC2, SHELL, WILD Caltrans Facilities MAINTENANCE STATIONS FREEWAYS AND HIGHWAYS Length (miles) 5 2.4 http://svctenvims.dot.ca.gov/wqpUwqpt.aspx False False 2/3 11 /20/2018 PARK & RIDE LOTS Water Quality Planning Tool 78 5.3 REST AREAS Name 1•tffilt$i(3·i1i,\@1~•ffi1MM ~i•tffilt$it3·i1i,\H1:!miffi1MM COLLEGE (SOUTH) 11 RTE 78 11 COLLEGE (NORTH) 11 SD SD SD Additional Information HelR for the Water Quality Planning Tool TMDL information from the SWRCB 78 5 78 3.3 R51.2 3.3 Construction General Permit information from the SWRCB Groundwater DeRth information from the California Department of Water Resouces R Factor erosivity calculations Conditions of Use I PrivacY. PolicY. Copyright© 2012 State of California http://svctenvims.dot.ca.gov/wqpt/wqpt.aspx 3/3 • Toxicity 9 Jamyl Creek River & 91033000 I 10 Miles 2010 SA 2019 Stream 18070304 o Source Unknown • Nitrogen 9 Keys Creek River & 90312000 I 13 Miles 2010 SA 2025 Stream 18070303 o Source Unknown • Seleniym o Source Unknown 13 Miles 2010 SA 2019 • Pentachlorophenol (PCP) 9 Kit Carson River & 90521000 / 0.99 Miles 2006 SA 2019 Creek Stream 18070304 o Source Unknown • Total Dissolved Solids o Source Unknown 0.99 Miles 2002 SA 2019 • Phosphorus 9 Laguna River & 90112000 / 1.6 Miles 2010 SA 2023 Canyon Stream 18070301 o Source Unknown Cbannel • Total Nitrogen as N o Source Unknown 1.6 Miles 2010 SA 2025 • Toxicity o Source Unknown 1.6 Miles 2010 SA 2019 • Benthic Commynity Effects 9 Loma Alta River & 90410000 / 7.8 Miles 2010 SA 2025 .c.re.e.k Stream 18070303 o Contaminated Sediments 0 Hydromodification 0 Illicit Connections/Illegal Hook- ups/Dry Weather Flows o Source Unknown 0 Unknown Point Source 0 Urban Runoff/Storm Sewers • Selenjym o Source Unknown 7.8 Miles 2010 SA 2019 In LOE 8875, the exceedance rate should be 4 over 4, and this change will be updated in next cycle of assessment. • Toxicity o Source Unknown 7.8 Miles 2010 SA 2019 • Chlorpyrifos 9 J,,Qng River& 90232000 I o Source Unknown 8.3 Miles 2010 SA 2019 Canyon Stream 18070302 Creek (trigytary to Myrrieta Creek) • 1r2n 8.3 Miles 2010 SA 2019 o Source Unknown • Manganese o Source Unknown 8.3 Miles 2010 SA 2019 • Phosphorus o Source Unknown 8.3 Miles 2010 SA 2023 Ile:///C/Users/heyu/Desktop/New%20Category%20List/0923 I 6/category5_report.shtm1[9/23/2016 I :25:30 PM] See decision numbers 43302, 43534 , 44429 for potential sources of water toxicity. • Ammonia 9 ~ Lake & 91031000 / Source Unknown 1050 Acres 2010 SA 2019 BeservQic, Reservoir 18070304 0 Lower • .QQ1Qr 1050 Acres 2006 SA 2019 0 Source Unknown • Iron Natural Sources 1050 Acres 2006 SA 2019 0 0 Source Unknown • Manganese Source Unknown 1050 Acres 2006 SA 2019 0 • NitCQgen 1050 Acres 2010 SA 2021 0 Source Unknown • Phosphorus 1050 Acres 2010 SA 2023 0 Source Unknown • PCBs (Pol~cblocioated biphen~ls) 9 ~ Coastal & 91010000 / Source Unknown 0.42 Miles 2006 SA 2019 ~ Bay 18070305 0 Sboreline, Shoreline Imperial E!eacb eiec • Indicator Bacteria 9 ~ Coastal & 90410000 I Natural Sources 0.03 Miles 1998 SA 2019 ~ Bay 18070303 0 Shoreline, Shoreline 0 Nonpoint Source Loma Alta 0 Point Source l::ISA, at 0 Source Unknown Loma Alta Creek .!lliMb. • lodicatoc Bactecia 9 ~ Coastal & 90461000 I Source Unknown 0.44 Miles 1998 SA 2008 ~ Bay 18070303 0 Shoreline, Shoreline San Elijo l::ISA, at Cardiff State Beach at San Elijo Lagoon • Copper 9 eale1a River & 90831000 / Source Unknown 4.1 Miles 2010 SA 2021 ~ Stream 18070304 0 • Lead 4.1 Miles 2010 SA 2021 o Source Unknown • Phosphorus 9 Paradise River & 90912000 I 2.8 Miles 2010 SA 2023 Creek, HSA Stream 18070304 o Source Unknown ~Q/.l.J2Q • Selenium 2.8 Miles 2010 SA 2021 file :///C/Users/heyu/Desktop/New%20Category%20List/092316/category5_report.shtml[9/23/20 16 I :25:30 PM] • Indicator Bacteria 9 San Juan Estuary 90120000 / Source Unknown 6.3 Acres 1990 58 2011 Creek 18070301 0 (mouth) • Benthic Communiti£ Effects 9 San Luis River & 90311000 / Source Unknown 19 Miles 2010 5A 2025 Rey River, Stream 18070303 0 Lowec (west of Interstate 1fil • Chloride Source Unknown 19 Miles 2002 5A 2019 0 Impairment located at lower 13 miles. • Phosphorus Source Unknown 19 Miles 2010 5A 2021 0 • Iotal Dissolved Solids Source Unknown 19 Miles 2002 5A 2019 0 • Toxicity Source Unknown 19 Miles 2010 5A 2021 0 • Phosphorus 9 Sa□ Luis River& 90312000 / Source Unknown 35 Miles 2010 5A 2023 Rey River, Stream 18070303 0 !.!pi;ier (east of l□tecstate 1fil • Total Nitrogen as N Source Unknown 35 Miles 2010 5A 2021 0 • Benthic Cornrnuaity Effects 9 Saa Marcos River& 90451000 / Source Unknown 19 Miles 2010 5A 2025 ~ Stream 18070303 0 • Q.Q.E 19 Miles 2006 5A 2019 (Dichlocodipbeayldicblocoethylene) 0 Source Unknown • Phosphorus Source Unknown 19 Miles 2006 5A 2019 0 0 Unknown Nonpoint Source 0 Unknown Point Source 0 Urban Runoff/Storm Sewers • Selenium Source Unknown 19 Miles 2010 5A 2021 0 • Ammonia as Nitrogen 9 San Marcos Lake & 90452000 I Source Unknown 17 Acres 2006 5A 2019 L.a.!ie Reservoir 18070303 0 • Nutrients Source Unknown 17 Acres 2006 5A 2019 0 • Phosphorus Source Unknown 17 Acres 2006 5A 2019 0 ifi le:///C/Users/heyu/Desktop/New%20Category%20List/0923 I 6/category5_report.shtml[9/23/2016 I :25:30 PM] APPENDIX T -BEST MANAGEMENT PRACTICES (BMP) FACT SHEETS Scheduling Description and Purpose Scheduling is the development of a written plan that includes sequencing of construction activities and the implementation of BMPs such as erosion control and sediment control while taking local climate (rainfall, wind, etc.) into consideration. The purpose is to reduce the amount and duration of soil exposed to erosion by wind, rain, runoff, and vehicle tracking, and to perform the construction activities and control practices in accordance with the planned schedule. Suitable Applications Proper sequencing of construction activities to reduce erosion potential should be incorporated into the schedule of every construction project especially during rainy season. Use of other, more costly yet less effective, erosion and sediment control BMPs may often be reduced through proper construction sequencing. Limitations ■ Environmental constraints such as nesting season prohibitions reduce the full capabilities of this BMP. Implementation ■ Avoid rainy periods. Schedule major grading operations during dry months when practical. Allow enough time before rainfall begins to stabilize the soil with vegetation or physical means or to install sediment trapping devices. ■ Plan the project and develop a schedule showing each phase November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa.org EC-1 Categories EC Erosion Control SE Sed iment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 ~ ~ ~ 0 1 of 3 Scheduling EC-1 of construction. Clearly show how the rainy season relates to soil disturbing and re- stabilization activities. Incorporate the construction schedule into the SWPPP. ■ Include on the schedule, details on the rainy season implementation and deployment of: Erosion control BMPs Sediment control BMPs Tracking control BMPs Wind erosion control BMPs Non-stormwater BMPs Waste management and materials pollution control BMPs ■ Include dates for activities that may require non-stormwater discharges such as dewatering, sawcutting, grinding, drilling, boring, crushing, blasting, painting, hydro-demolition, mortar mixing, pavement cleaning, etc. ■ Work out the sequencing and timetable for the start and completion of each item such as site clearing and grubbing, grading, excavation, paving, foundation pouring utilities installation, etc., to minimize the active construction area during the rainy season. Sequence trenching activities so that most open portions are closed before new trenching begins. Incorporate staged seeding and re-vegetation of graded slopes as work progresses. Schedule establishment of permanent vegetation during appropriate planting time for specified vegetation. ■ Non-active areas should be stabilized as soon as practical after the cessation of soil disturbing activities or one day prior to the onset of precipitation. ■ Monitor the weather forecast for rainfall. ■ When rainfall is predicted, adjust the construction schedule to allow the implementation of soil stabilization and sediment treatment controls on all disturbed areas prior to the onset of rain. ■ Be prepared year round to deploy erosion control and sediment control BMPs. Erosion may be caused during dry seasons by un-seasonal rainfall, wind, and vehicle tracking. Keep the site stabilized year round, and retain and maintain rainy season sediment trapping devices in operational condition. ■ Apply permanent erosion control to areas deemed substantially complete during the project's defined seeding window. Costs Construction scheduling to reduce erosion may increase other construction costs due to reduced economies of scale in performing site grading. The cost effectiveness of scheduling techniques should be compared with the other less effective erosion and sedimentation controls to achieve a cost effective balance. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 3 Scheduling EC-1 Inspection and Maintenance ■ Verify that work is progressing in accordance with the schedule. If progress deviates, take corrective actions. ■ Amend the schedule when changes are warranted. ■ Amend the schedule prior to the rainy season to show updated information on the deployment and implementation of construction site BMPs. References Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities Developing Pollution Prevention Plans and Best Management Practices (EPA 832-R-92-005), U.S. Environmental Protection Agency, Office of Water, September 1992. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Material Delivery and Storage WM-1 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and 0 Materials Pollution Control Legend: @ Primary Category ~ Secondary Category Description and Purpose Targeted Constituents Prevent, reduce, or eliminate the discharge of pollutants from material delivery and storage to the stormwater system or watercourses by minimizing the storage of hazardous materials onsite, storing materials in watertight containers and/ or a completely enclosed designated area, installing secondary containment, conducting regular inspections, and training employees and subcontractors. This best management practice covers only material delivery and storage. For other information on materials, see WM-2, Material Use, or WM-4, Spill Prevention and Control. For information on wastes, see the waste management BMPs in this section. Suitable Applications These procedures are suitable for use at all construction sites with delivery and storage of the following materials: ■ Soil stabilizers and binders ■ Pesticides and herbicides ■ Fertilizers ■ Detergents ■ Plaster ■ Petroleum products such as fuel, oil, and grease November 2009 California Stormwater BMP Handbook Construction www.casqa.org Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics 0 0 Potential Alternatives None I I 1 of 5 Material Delivery and Storage WM-1 ■ Asphalt and concrete components ■ Hazardous chemicals such as acids, lime, glues, adhesives, paints, solvents, and curing compounds ■ Concrete compounds ■ Other materials that may be detrimental if released to the environment Limitations ■ Space limitation may preclude indoor storage. ■ Storage sheds often must meet building and fire code requirements. Implementation The following steps should be taken to minimize risk: ■ Chemicals must be stored in water tight containers with appropriate secondary containment or in a storage shed. ■ When a material storage area is located on bare soil, the area should be lined and bermed. ■ Use containment pallets or other practical and available solutions, such as storing materials within newly constructed buildings or garages, to meet material storage requirements. ■ Stack erodible landscape material on pallets and cover when not in use. ■ Contain all fertilizers and other landscape materials when not in use. ■ Temporary storage areas should be located away from vehicular traffic. ■ Material Safety Data Sheets (MSDS) should be available on-site for all materials stored that have the potential to effect water quality. ■ Construction site areas should be designated for material delivery and storage. ■ Material delivery and storage areas should be located away from waterways, if possible. Avoid transport near drainage paths or waterways. Surround with earth berms or other appropriate containment BMP. See EC-9, Earth Dikes and Drainage Swales. Place in an area that will be paved. ■ Storage of reactive, ignitable, or flammable liquids must comply with the fire codes of your area. Contact the local Fire Marshal to review site materials, quantities, and proposed storage area to determine specific requirements. See the Flammable and Combustible Liquid Code, NFPA.30. ■ An up to date inventory of materials delivered and stored onsite should be kept. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 5 Material Delivery and Storage WM-1 ■ Hazardous materials storage onsite should be minimized. ■ Hazardous materials should be handled as infrequently as possible. ■ Keep ample spill cleanup supplies appropriate for the materials being stored. Ensure that cleanup supplies are in a conspicuous, labeled area. ■ Employees and subcontractors should be trained on the proper material delivery and storage practices. ■ Employees trained in emergency spill cleanup procedures must be present when dangerous materials or liquid chemicals are unloaded. ■ If significant residual materials remain on the ground after construction is complete, properly remove and dispose of materials and any contaminated soil. See WM-7, Contaminated Soil Management. If the area is to be paved, pave as soon as materials are removed to stabilize the soil. Material Storage Areas and Practices ■ Liquids, petroleum products, and substances listed in 40 CFR Parts 110, 117, or 302 should be stored in approved containers and drums and should not be overfilled. Containers and drums should be placed in temporary containment facilities for storage. ■ A temporary containment facility should provide for a spill containment volume able to contain precipitation from a 25 year storm event, plus the greater of 10% of the aggregate volume of all containers or 100% of the capacity of the largest container within its boundary, whichever is greater. ■ A temporary containment facility should be impervious to the materials stored therein for a minimum contact time of 72 hours. ■ A temporary containment facility should be maintained free of accumulated rainwater and spills. In the event of spills or leaks, accumulated rainwater and spills should be collected and placed into drums. These liquids should be handled as a hazardous waste unless testing determines them to be non-hazardous. All collected liquids or non-hazardous liquids should be sent to an approved disposal site. ■ Sufficient separation should be provided between stored containers to allow for spill cleanup and emergency response access. ■ Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility. ■ Materials should be covered prior to, and during rain events. ■ Materials should be stored in their original containers and the original product labels should be maintained in place in a legible condition. Damaged or otherwise illegible labels should be replaced immediately. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 3 of 5 Material Delivery and Storage WM-1 ■ Bagged and boxed materials should be stored on pallets and should not be allowed to accumulate on the ground. To provide protection from wind and rain throughout the rainy season, bagged and boxed materials should be covered during non-working days and prior to and during rain events. ■ Stockpiles should be protected in accordance with WM-3, Stockpile Management. ■ Materials should be stored indoors within existing structures or completely enclosed storage sheds when available. ■ Proper storage instructions should be posted at all times in an open and conspicuous location. ■ An ample supply of appropriate spill clean up material should be kept near storage areas. ■ Also see WM-6, Hazardous Waste Management, for storing of hazardous wast es. Material Delivery Practices ■ Keep an accurate, up-to-date inventory of material delivered and stored onsite. ■ Arrange for employees trained in emergency spill cleanup procedures to be present when dangerous materials or liquid chemicals are unloaded. Spill Cleanup ■ Contain and clean up any spill immediately. ■ Properly remove and dispose of any hazardous materials or contaminated soil if significant residual materials remain on the ground after construction is complete. See WM-7, Contaminated Soil Management. ■ See WM-4, Spill Prevention and Control, for spills of chemicals and/ or hazardous materials. ■ If spills or leaks of materials occur that are not contained and could discharge to surface waters, non-visible sampling of site discharge may be required. Refer to the General Permit or to your project specific Construction Site Monitoring Plan to determine if and where sampling is required. Cost ■ The largest cost of implementation may be in the construction of a materials storage area that is covered and provides secondary containment. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Keep storage areas clean and well organized, including a current list of all materials onsite. ■ Inspect labels on containers for legibility and accuracy. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 4 of 5 Material Delivery and Storage WM-1 ■ Repair or replace perimeter controls, containment structures, covers, and liners as needed to maintain proper function. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995. Coastal Non point Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa.org 5 of 5 Stockpile Management Description and Purpose Stockpile management procedures and practices are designed to reduce or eliminate air and stormwater pollution from stockpiles of soil, soil amendments, sand, paving materials such as portland cement concrete (PCC) rubble, asphalt concrete (AC), asphalt concrete rubble, aggregate base, aggregate sub base or pre-mixed aggregate, asphalt minder (so called "cold mix" asphalt), and pressure treated wood. Suitable Applications Implement in all projects that stockpile soil and other loose materials. Limitations ■ Plastic sheeting as a stockpile protection is temporary and hard to manage in windy conditions. Where plastic is used, consider use of plastic tarps with nylon reinforcement which may be more durable than standard sheeting. ■ Plastic sheeting can increase runoff volume due to lack of infiltration and potentially cause perimeter control failure. ■ Plastic sheeting breaks down faster in sunlight. ■ The use of Plastic materials and photodegradable plastics should be avoided. Implementation Protection of stockpiles is a year-round requirement. To properly manage stockpiles: November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org WM-3 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Tra sh Metals Bacteria Oil and Grease Organics Potentia I Alternatives None ~ ~ 0 0 0 0 0 0 0 ~ CASQA CAUrORNIA Sl'OltMW TER 1 of3 Stockpile Management WM-3 ■ On larger sites, a minimum of 50 ft separation from concentrated flows of stormwater, drainage courses, and inlets is recommended. ■ All stockpiles are required to be protected immediately if they are not scheduled to be used within 14 days. ■ Protect all stockpiles from stormwater runon using temporary perimeter sediment barriers such as compost berms (SE-13), temporary silt dikes (SE-12), fiber rolls (SE-5), silt fences (SE-1), sandbags (SE-8), gravel bags (SE-6), or biofilter bags (SE-14). Refer to the individual fact sheet for each of these controls for installation information. ■ Implement wind erosion control practices as appropriate on all stockpiled material. For specific information, see WE-1, Wind Erosion Control. ■ Manage stockpiles of contaminated soil in accordance with WM-7, Contaminated Soil Management. ■ Place bagged materials on pallets and under cover. ■ Ensure that stockpile coverings are installed securely to protect from wind and rain. ■ Some plastic covers withstand weather and sunlight better than others. Select cover materials or methods based on anticipated duration of use. Protection of Non-Active Stockpiles Non-active stockpiles of the identified materials should be protected further as follows: Soil stockpiles ■ Soil stockpiles should be covered or protected with soil stabilization measures and a temporary perimeter sediment barrier at all times. ■ Temporary vegetation should be considered for topsoil piles that will be stockpiled for extended periods. Stockpiles of Portland cement concrete rubble, asphalt concrete, asphalt concrete rubble, aggregate base, or aggregate sub base ■ Stockpiles should be covered and protected with a temporary perimeter sediment barrier at all times. Stockpiles of "cold mix" ■ Cold mix stockpiles should be placed on and covered with plastic sheeting or comparable material at all times and surrounded by a berm. Stockpiles of fly ash, stucco, hydrated lime ■ Stockpiles of materials that may raise the pH of runoff (i.e., basic materials) should be covered with plastic and surrounded by a berm. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 3 Stockpile Management WM-3 Stockpiles/Storage of wood (Pressure treated with chromated copper arsenate or ammoniacal copper zinc arsenate ■ Treated wood should be covered with plastic sheeting or comparable material at all times and surrounded by a berm. Protection of Active Stockpiles Active stockpiles of the identified materials should be protected as follows: ■ All stockpiles should be covered and protected with a temporary linear sediment barrier prior to the onset of precipitation. ■ Stockpiles of "cold mix" and treated wood, and basic materials should be placed on and covered with plastic sheeting or comparable material and surrounded by a berm prior to the onset of precipitation. ■ The downstream perimeter of an active stockpile should be protected with a linear sediment barrier or berm and runoff should be diverted around or away from the stockpile on the upstream perimeter. Costs For cost information associated with stockpile protection refer to the individual erosion or sediment control BMP fact sheet considered for implementation (For example, refer to SE-1 Silt Fence for installation of silt fence around the perimeter of a stockpile.) Inspection and Maintenance ■ Stockpiles must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ It may be necessary to inspect stockpiles covered with plastic sheeting more frequently during certain conditions (for example, high winds or extreme heat). ■ Repair and/ or replace perimeter controls and covers as needed to keep them functioning properly. ■ Sediment shall be removed when it reaches one-third of the barrier height. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Spill Prevention and Control Description and Purpose Prevent or reduce the discharge of pollutants to drainage systems or watercourses from leaks and spills by reducing the chance for spills, stopping the source of spills, containing and cleaning up spills, properly disposing of spill materials, and training employees. This best management practice covers only spill prevention and control. However, WM-1, Materials Delivery and Storage, and WM-2, Material Use, also contain useful information, particularly on spill prevention. For information on wastes, see the waste management BMPs in this section. Suitable Applications This BMP is suitable for all construction projects. Spill control procedures are implemented anytime chemicals or hazardous substances are stored on the construction site, including the following materials: ■ Soil stabilizers/binders ■ Dust palliatives ■ Herbicides ■ Growth inhibitors ■ Fertilizers ■ Deicing/anti-icing chemicals November 2009 California Stormwater BMP Handbook Construction www.casqa.org WM-4 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and 0 Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment 0 Nutrients 0 Trash 0 Metals 0 Bacteria Oil and Grease 0 Organics 0 Potential Alternatives None 1 of 6 Spill Prevention and Control WM-4 ■ Fuels ■ Lubricants ■ Other petroleum distillates Limitations ■ In some cases it may be necessary to use a private spill cleanup company. ■ This BMP applies to spills caused by the contractor and subcontractors. ■ Procedures and practices presented in this BMP are general. Contractor should identify appropriate practices for the specific materials used or stored onsite Implementation The following steps will help reduce the stormwater impacts ofleaks and spills: Education ■ Be aware that different materials pollute in different amounts. Make sure that each employee knows what a "significant spill" is for each material they use, and what is the appropriate response for "significant" and "insignificant" spills. ■ Educate employees and subcontractors on potential dangers to humans and the environment from spills and leaks. ■ Hold regular meetings to discuss and reinforce appropriate disposal procedures (incorporate into regular safety meetings). ■ Establish a continuing education program to indoctrinate new employees. ■ Have contractor's superintendent or representative oversee and enforce proper spill prevention and control measures. General Measures ■ To the extent that the work can be accomplished safely, spills of oil, petroleum products, substances listed under 40 CFRparts 110,117, and 302, and sanitary and septic wastes should be contained and cleaned up immediately. ■ Store hazardous materials and wastes in covered containers and protect from vandalism. ■ Place a stockpile of spill cleanup materials where it will be readily accessible. ■ Train employees in spill prevention and cleanup. ■ Designate responsible individuals to oversee and enforce control measures. ■ Spills should be covered and protected from stormwater runon during rainfall to the extent that it doesn't compromise clean up activities. ■ Do not bury or wash spills with water. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 2 of 6 Spill Prevention and Control WM-4 ■ Store and dispose of used clean up materials, contaminated materials, and recovered spill material that is no longer suitable for the intended purpose in conformance with the provisions in applicable BMPs. ■ Do not allow water used for cleaning and decontamination to enter storm drains or watercourses. Collect and dispose of contaminated water in accordance with WM-10, Liquid Waste Management. ■ Contain water overflow or minor water spillage and do not allow it to discharge into drainage facilities or watercourses. ■ Place proper storage, cleanup, and spill reporting instructions for hazardous materials stored or used on the project site in an open, conspicuous, and accessible location. ■ Keep waste storage areas clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Perimeter controls, containment structures, covers, and liners should be repaired or replaced as needed to maintain proper function. Cleanup ■ Clean up leaks and spills immediately. ■ Use a rag for small spills on paved surfaces, a damp mop for general cleanup, and absorbent material for larger spills. If the spilled material is hazardous, then the used cleanup materials are also hazardous and must be sent to either a certified laundry (rags) or disposed of as hazardous waste. ■ Never hose down or bury dry material spills. Clean up as much of the material as possible and dispose of properly. See the waste management BMPs in this section for specific information. Minor Spills ■ Minor spills typically involve small quantities of oil, gasoline, paint, etc. which can be controlled by the first responder at the discovery of the spill. ■ Use absorbent materials on small spills rather than hosing down or burying the spill. ■ Absorbent materials should be promptly removed and disposed of properly. ■ Follow the practice below for a minor spill: Contain the spread of the spill. Recover spilled materials. Clean the contaminated area and properly dispose of contaminated materials. Semi-Significant Spills ■ Semi-significant spills still can be controlled by the first responder along with the aid of other personnel such as laborers and the foreman, etc. This response may require the cessation of all other activities. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 3 of 6 Spill Prevention and Control WM-4 ■ Spills should be cleaned up immediately: Contain spread of the spill. Notify the project foreman immediately. If the spill occurs on paved or impermeable surfaces, clean up using "dry" methods (absorbent materials, cat litter and/or rags). Contain the spill by encircling with absorbent materials and do not let the spill spread widely. If the spill occurs in dirt areas, immediately contain the spill by constructing an earthen dike. Dig up and properly dispose of contaminated soil. If the spill occurs during rain, cover spill with tarps or other material to prevent contaminating runoff. Significant/Hazardous Spills ■ For significant or hazardous spills that cannot be controlled by personnel in the immediate vicinity, the following steps should be taken: Notify the local emergency response by dialing 911. In addition to 911, the contractor will notify the proper county officials. It is the contractor's responsibility to have all emergency phone numbers at the construction site. Notify the Governor's Office of Emergency Services Warning Center, (916) 845-8911. For spills of federal reportable quantities, in conformance with the requirements in 40 CFR parts 110,119, and 302, the contractor should notify the National Response Center at (800) 424-8802. Notification should first be made by telephone and followed up with a written report. The services of a spills contractor or a Haz-Mat team should be obtained immediately. Construction personnel should not attempt to clean up until the appropriate and qualified staffs have arrived at the job site. Other agencies which may need to be consulted include, but are not limited to, the Fire Department, the Public Works Department, the Coast Guard, the Highway Patrol, the City/County Police Department, Department of Toxic Substances, California Division of Oil and Gas, Cal/OSHA, etc. Reporting ■ Report significant spills to local agencies, such as the Fire Department; they can assist in cleanup. ■ Federal regulations require that any significant oil spill into a water body or onto an adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802 (24 hours). Use the following measures related to specific activities: November 2009 California Stormwater BMP Handbook Construction www.casqa.org 4 of 6 Spill Prevention and Control WM-4 Vehicle and Equipment Maintenance ■ If maintenance must occur onsite, use a designated area and a secondary containment, located away from drainage courses, to prevent the runon of stormwater and the runoff of spills. ■ Regularly inspect onsite vehicles and equipment for leaks and repair immediately ■ Check incoming vehicles and equipment (including delivery trucks, and employee and subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or equipment onsite. ■ Always use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids. ■ Place drip pans or absorbent materials under paving equipment when not in use. ■ Use absorbent materials on small spills rather than hosing down or burying the spill. Remove the absorbent materials promptly and dispose of properly. ■ Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip pans or other open containers lying around ■ Oil filters disposed of in trashcans or dumpsters can leak oil and pollute stormwater. Place the oil filter in a funnel over a waste oil-recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask the oil supplier or recycler about recycling oil filters. ■ Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Vehicle and Equipment Fueling ■ If fueling must occur onsite, use designate areas, located away from drainage courses, to prevent the runon of stormwater and the runoff of spills. ■ Discourage "topping off' of fuel tanks. ■ Always use secondary containment, such as a drain pan, when fueling to catch spills/ leaks . . Costs Prevention of leaks and spills is inexpensive. Treatment and/ or disposal of contaminated soil or water can be quite expensive. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and of two-week intervals in the non-rainy season to verify continued BMP implementation. ■ Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 5 of 6 Spill Prevention and Control WM-4 ■ Keep ample supplies of spill control and cleanup materials onsite, near storage, unloading, and maintenance areas. ■ Update your spill prevention and control plan and stock cleanup materials as changes occur in the types of chemicals onsite. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Non point Source Pollution Control Program, 1995. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 6 of 6 Solid Waste Management Description and Purpose Solid waste management procedures and practices are designed to prevent or reduce the discharge of pollutants to stormwater from solid or construction waste by providing designated waste collection areas and containers, arranging for regular disposal, and training employees and subcontractors. Suitable Applications This BMP is suitable for construction sites where the fo llowing wastes are generated or stored: ■ Solid waste generated from trees and shrubs removed during land clearing, demolition of existing structures (rubble), and building construction ■ Packaging materials including wood, paper, and plastic ■ Scrap or surplus building materials including scrap metals, rubber, plastic, glass pieces and masonry products ■ Domestic wastes including food containers such as beverage cans, coffee cups, paper bags, plastic wrappers, and cigarettes ■ Construction wastes including brick, mortar, timber, steel and metal scraps, pipe and electrical cuttings, non- hazardous equipment parts, styrofoam and other materials used to transport and package construction materials ■ Highway planting wastes, including vegetative material, November 2009 California Stormwater BMP Handbook Construction www.casqa.org WM-5 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Manag ement Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 0 0 0 0 0 0 ~ CASQA ALIFORNIA STORMWATER I I 1 of 4 Solid Waste Management plant containers, and packaging materials Limitations WM-5 Temporary stockpiling of certain construction wastes may not necessitate stringent drainage related controls during the non-rainy season or in desert areas with low rainfall. Implementation The following steps will help keep a clean site and reduce stormwater pollution: ■ Select designated waste collection areas onsite. ■ Inform trash-hauling contractors that you will accept only watertight dumpsters for onsite use. Inspect dumpsters for leaks and repair any dumpster that is not watertight. ■ Locate containers in a covered area or in a secondary containment. ■ Provide an adequate number of containers with lids or covers that can be placed over the container to keep rain out or to prevent loss of wastes when it is windy. ■ Plan for additional containers and more frequent pickup during the demolition phase of construction. ■ Collect site trash daily, especially during rainy and windy conditions. ■ Remove this solid waste promptly since erosion and sediment control devices tend to collect litter. ■ Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. ■ Do not hose out dumpsters on the construction site. Leave dumpster cleaning to the trash hauling contractor. ■ Arrange for regular waste collection before containers overflow. ■ Clean up immediately if a container does spill. ■ Make sure that construction waste is collected, removed, and disposed of only at authorized disposal areas. Education ■ Have the contractor's superintendent or representative oversee and enforce proper solid waste management procedures and practices. ■ Instruct employees and subcontractors on identification of solid waste and hazardous waste. ■ Educate employees and subcontractors on solid waste storage and disposal procedures. ■ Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings). November 2009 California Stormwater BMP Handbook Construction www .casqa.org 2 of 4 Solid Waste Management WM-5 ■ Require that employees and subcontractors follow solid waste handling and storage procedures. ■ Prohibit littering by employees, subcontractors, and visitors. ■ Minimize production of solid waste materials wherever possible. Collection, Storage, and Disposal ■ Littering on the project site should be prohibited. ■ To prevent clogging of the storm drainage system, litter and debris removal from drainage grates, trash racks, and ditch lines should be a priority. ■ Trash receptacles should be provided in the contractor's yard, field trailer areas, and at locations where workers congregate for lunch and break periods. ■ Litter from work areas within the construction limits of the project site should be collected and placed in watertight dumpsters at least weekly, regardless of whether the litter was generated by the contractor, the public, or others. Collected litter and debris should not be placed in or next to drain inlets, storm water drainage systems, or watercourses. ■ Dumpsters of sufficient size and number should be provided to contain the solid waste generated by the project. ■ Full dumpsters should be removed from the project site and the contents should be disposed of by the trash hauling contractor. ■ Construction debris and waste should be removed from the site biweekly or more frequently as needed. ■ Construction material visible to the public should be stored or stacked in an orderly manner. ■ Stormwater runon should be prevented from contacting stored solid waste through the use of berms, dikes, or other temporary diversion structures or through the use of measures to elevate waste from site surfaces. ■ Solid waste storage areas should be located at least 50 ft from drainage facilities and watercourses and should not be located in areas prone to flooding or ponding. ■ Except during fair weather, construction and highway planting waste not stored in watertight dumpsters should be securely covered from wind and rain by covering the waste with tarps or plastic. ■ Segregate potentially hazardous waste from non-hazardous construction site waste. ■ Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. ■ For disposal of hazardous waste, see WM-6, Hazardous Waste Management. Have hazardous waste hauled to an appropriate disposal and/or recycling facility. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 3 of 4 Solid Waste Management WM-5 ■ Salvage or recycle useful vegetation debris, packaging and surplus building materials when practical. For example, trees and shrubs from land clearing can be used as a brush barrier, or converted into wood chips, then used as mulch on graded areas. Wood pallets, cardboard boxes, and construction scraps can also be recycled. Costs All of the above are low cost measures. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and of two-week intervals in the non-rainy season to verify continued BMP implementation. ■ Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur ■ Inspect construction waste area regularly. ■ Arrange for regular waste collection. References Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 4 of 4 Hazardous Waste Management WM-6 Description and Purpose Prevent or reduce the discharge of pollutants to stormwater from hazardous waste through proper material use, waste disposal, and training of employees and subcontractors. Suitable Applications This best management practice (BMP) applies to all construction projects. Hazardous waste management practices are implemented on construction projects that generate waste from the use of: -Petroleum Products -Asphalt Products -Concrete Curing Compounds -Pesticides -Palliatives -Acids -Septic Wastes -Paints -Stains -Solvents -Wood Preservatives -Roofing Tar -Any materials deemed a hazardous waste in California, Title 22 Division 4.5, or listed in 40 CFR Parts 110, 117, 261, or 302 November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Con trol WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment 0 Nutrients 0 Trash 0 Metals 0 Bacteria 0 Oil and Grease 0 Organics 0 Potentia I Alternatives None 1 of 6 Hazardous Waste Management WM-6 In addition, sites with existing structures may contain wastes, which must be disposed of in accordance with federal, state, and local regulations. These wastes include: ■ Sandblasting grit mixed with lead-, cadmium-, or chromium-based paints ■ Asbestos ■ PCBs (particularly in older transformers) Limitations ■ Hazardous waste that cannot be reused or recycled must be disposed of by a licensed hazardous waste hauler. ■ Nothing in this BMP relieves the contractor from responsibility for compliance with federal, state, and local laws regarding storage, handling, transportation, and disposal of hazardous wastes. ■ This BMP does not cover aerially deposited lead (ADL) soils. For ADL soils refer to WM-7, Contaminated Soil Management. Implementation The following steps will help reduce stormwater pollution from hazardous wastes: Material Use ■ Wastes should be stored in sealed containers constructed of a suitable material and should be labeled as required by Title 22 CCR, Division 4.5 and 49 CFR Parts 172, 173, 178, and 179. ■ All hazardous waste should be stored, transported, and disposed as required in Title 22 CCR, Division 4.5 and 49 CFR 261-263. ■ Waste containers should be stored in temporary containment facilities that should comply with the following requirements: Temporary containment facility should provide for a spill containment volume equal to 1.5 times the volume of all containers able to contain precipitation from a 25 year storm event, plus the greater of 10% of the aggregate volume of all containers or 100% of the capacity of the largest tank within its boundary, whichever is greater. Temporary containment facility should be impervious to the materials stored there for a minimum contact time of 72 hours. Temporary containment facilities should be maintained free of accumulated rainwater and spills. In the event of spills or leaks, accumulated rainwater and spills should be placed into drums after each rainfall. These liquids should be handled as a hazardous waste unless testing determines them to be non-hazardous. Non-hazardous liquids should be sent to an approved disposal site. Sufficient separation should be provided between stored containers to allow for spill cleanup and emergency response access. November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa.org 2 of 6 Hazardous Waste Management WM-6 Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility. Throughout the rainy season, temporary containment facilities should be covered during non-working days, and prior to rain events. Covered facilities may include use of plastic tarps for small facilities or constructed roofs with overhangs. ■ Drums should not be overfilled and wastes should not be mixed. ■ Unless watertight, containers of dry waste should be stored on pallets. ■ Do not over-apply herbicides and pesticides. Prepare only the amount needed. Follow the recommended usage instructions. Over application is expensive and environmentally harmful. Apply surface dressings in several smaller applications, as opposed to one large application. Allow time for infiltration and avoid excess material being carried offsite by runoff. Do not apply these chemicals just before it rains. People applying pesticides must be certified in accordance with federal and state regulations. ■ Paint brushes and equipment for water and oil based paints should be cleaned within a contained area and should not be allowed to contaminate site soils, watercourses, or drainage systems. Waste paints, thinners, solvents, residues, and sludges that cannot be recycled or reused should be disposed of as hazardous waste. When thoroughly dry, latex paint and paint cans, used brushes, rags, absorbent materials, and drop cloths should be disposed of as solid waste. ■ Do not clean out brushes or rinse paint containers into the dirt, street, gutter, storm drain, or stream. "Paint out" brushes as much as possible. Rinse water-based paints to the sanitary sewer. Filter and reuse thinners and solvents. Dispose of excess oil-based paints and sludge as hazardous waste. ■ The following actions should be taken with respect to temporary contaminant: Ensure that adequate hazardous waste storage volume is available. Ensure that hazardous waste collection containers are conveniently located. Designate hazardous waste storage areas onsite away from storm drains or watercourses and away from moving vehicles and equipment to prevent accidental spills. Minimize production or generation of hazardous materials and hazardous waste on the job site. Use containment berms in fueling and maintenance areas and where the potential for spills is high. Segregate potentially hazardous waste from non-hazardous construction site debris. Keep liquid or semi-liquid hazardous waste in appropriate containers (closed drums or similar) and under cover. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 6 Hazardous Waste Management WM-6 Clearly label all hazardous waste containers with the waste being stored and the date of accumulation. Place hazardous waste containers in secondary containment. Do not allow potentially hazardous waste materials to accumulate on the ground. Do not mix wastes. Use all of the product before disposing of the container. Do not remove the original product label; it contains important safety and disposal information. Waste Recycling Disposal ■ Select designated hazardous waste collection areas onsite. ■ Hazardous materials and wastes should be stored in covered containers and protected from vandalism. ■ Place hazardous waste containers in secondary containment. ■ Do not mix wastes, this can cause chemical reactions, making recycling impossible and complicating disposal. ■ Recycle any useful materials such as used oil or water-based paint. ■ Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. ■ Arrange for regular waste collection before containers overflow. ■ Make sure that hazardous waste (e.g., excess oil-based paint and sludge) is collected, removed, and disposed of only at authorized disposal areas. Disposal Procedures ■ Waste should be disposed ofby a licensed hazardous waste transporter at an authorized and licensed disposal facility or recycling facility utilizing properly completed Uniform Hazardous Waste Manifest forms. ■ A Department of Health Services certified laboratory should sample waste to determine the appropriate disposal facility. ■ Properly dispose of rainwater in secondary containment that may have mixed with hazardous waste. ■ Attention is directed to "Hazardous Material", "Contaminated Material", and "Aerially Deposited Lead" of the contract documents regarding the handling and disposal of hazardous materials. November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa.org 4 of 6 Hazardous Waste Management WM-6 Education ■ Educate employees and subcontractors on hazardous waste storage and disposal procedures. ■ Educate employees and subcontractors on potential dangers to humans and the environment from hazardous wastes. ■ Instruct employees and subcontractors on safety procedures for common construction site hazardous wastes. ■ Instruct employees and subcontractors in identification of hazardous and solid waste. ■ Hold regular meetings to discuss and reinforce hazardous waste management procedures (incorporate into regular safety meetings). ■ The contractor's superintendent or representative should oversee and enforce proper hazardous waste management procedures and practices. ■ Make sure that hazardous waste is collected, removed, and disposed of only at authorized disposal areas. ■ Warning signs should be placed in areas recently treated with chemicals. ■ Place a stockpile of spill cleanup materials where it will be readily accessible. ■ If a container does spill, clean up immediately. Costs All of the above are low cost measures. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and of two week intervals in the non-rainy season to verify continued BMP implementation. ■ Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur ■ Hazardous waste should be regularly collected. ■ A foreman or construction supervisor should monitor onsite hazardous waste storage and disposal procedures. ■ Waste storage areas should be kept clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. ■ Perimeter controls, containment structures, covers, and liners should be repaired or replaced as needed to maintain proper function. ■ Hazardous spills should be cleaned up and reported in conformance with the applicable Material Safety Data Sheet (MSDS) and the instructions posted at the project site. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 5 of 6 Hazardous Waste Management WM-6 ■ The National Response Center, at (Boo) 424-8802, should be notified of spills of federal reportable quantities in conformance with the requirements in 40 CFR parts 110, 117, and 302. Also notify the Governors Office of Emergency Services Warning Center at (916) 845- 8911. ■ A copy of the hazardous waste manifests should be provided. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995. Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 6 of 6 Concrete Waste Management Description and Purpose CONCRETE WASHOUT AREA Prevent the discharge of pollutants to stormwater from concrete waste by conducting washout onsite or offsite in a designated area, and by employee and subcontractor training. The General Permit incorporates Numeric Effluent Limits (NEL) and Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Many types of construction materials, including mortar, concrete, stucco, cement and block and their associated wastes have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows and raising pH to levels outside the accepted range. Suitable Applications Concrete waste management procedures and practices are implemented on construction projects where: ■ Concrete is used as a construction material or where concrete dust and debris result from demolition activities. ■ Slurries containing portland cement concrete (PCC) are generated, such as from saw cutting, coring, grinding, grooving, and hydro-concrete demolition. November 2009 California Stormwater BMP Handbook Construction www.casqa.org WM-8 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None ~ 0 1 of 7 Concrete Waste Management WM-8 ■ Concrete trucks and other concrete-coated equipment are washed onsite. ■ Mortar-mixing stations exist. ■ Stucco mixing and spraying . ■ See also NS-8, Vehicle and Equipment Cleaning. Limitations ■ Offsite washout of concrete wastes may not always be possible. ■ Multiple washouts may be needed to assure adequate capacity and to allow for evaporation. Implementation The following steps will help reduce stormwater pollution from concrete wastes: ■ Incorporate requirements for concrete waste management into material suppli er and subcontractor agreements. ■ Store dry and wet materials under cover, away from drainage areas. Refer to WM-1, Material Delivery and Storage for more information. ■ Avoid mixing excess amounts of concrete. ■ Perform washout of concrete trucks in designated areas only, where washout will not reach stormwater. ■ Do not wash out concrete trucks into storm drains, open ditches, streets, streams or onto the ground. Trucks should always be washed out into designat ed facilities. ■ Do not allow excess concrete to be dumped onsite, except in designated areas. ■ For onsite washout: On larger sites, it is recommended to locate washout areas at least 50 feet from storm drains, open ditches, or water bodies. Do not allow runoff from this area by constructing a temporary pit or bermed area large enough for liquid and solid waste. Washout wastes into the temporary washout where the concrete can set, be broken up, and then disposed properly. Washout should be lined so there is no discharge into the underlying soil. ■ Do not wash sweepings from exposed aggregate concrete into the street or storm drain. Collect and return sweepings to aggregate base stockpile or dispose in the trash. ■ See typical concrete washout installation details at the end of this fact sheet. Education ■ Educate employees, subcontractors, and suppliers on the concrete waste management techniques described herein. November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa.org 2 of 7 Concrete Waste Management WM-8 ■ Arrange for contractor's superintendent or representative to oversee and enforce concrete waste management procedures. ■ Discuss the concrete management techniques described in this BMP (such as handling of concrete waste and washout) with the ready-mix concrete supplier before any deliveries are made. Concrete Demolition Wastes ■ Stockpile concrete demolition waste in accordance with BMP WM-3, Stockpile Management. ■ Dispose of or recycle hardened concrete waste in accordance with applicable federal, state or local regulations. Concrete Slurry Wastes ■ PCC and AC waste should not be allowed to enter storm drains or watercourses. ■ PCC and AC waste should be collected and disposed of or placed in a temporary concrete washout facility (as described in Onsite Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below). ■ A foreman or construction supervisor should monitor onsite concrete working tasks, such as saw cutting, coring, grinding and grooving to ensure proper methods are implemented. ■ Saw-cut concrete slurry should not be allowed to enter storm drains or watercourses. Residue from grinding operations should be picked up by means of a vacuum attachment to the grinding machine or by sweeping. Saw cutting residue should not be allowed to flow across the pavement and should not be left on the surface of the pavement. See also NS-3, Paving and Grinding Operations; and WM-10, Liquid Waste Management. ■ Concrete slurry residue should be disposed in a temporary washout facility (as described in Onsite Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below) and allowed to dry. Dispose of dry slurry residue in accordance with WM-5, Solid Waste Management. Onsite Temporary Concrete Washout Facility, Transit Truck Washout Procedures ■ Temporary concrete washout facilities should be located a minimum of 50 ft from storm drain inlets, open drainage facilities, and watercourses. Each facility should be located away from construction traffic or access areas to prevent disturbance or tracking. ■ A sign should be installed adjacent to each washout facility to inform concrete equipment operators to utilize the proper facilities. ■ Temporary concrete washout facilities should be constructed above grade or below grade at the option of the contractor. Temporary concrete washout facilities should be constructed and maintained in sufficient quantity and size to contain all liquid and concrete waste generated by washout operations. November 2009 Cal ifornia Stormwater BMP Handbook Construction www.casqa .org 3 of 7 Concrete Waste Management WM-8 ■ Temporary washout facilities should have a temporary pit or bermed areas of sufficient volume to completely contain all liquid and waste concrete materials generated during washout procedures. ■ Temporary washout facilities should be lined to prevent discharge to the underlying ground or surrounding area. ■ Washout of concrete trucks should be performed in designated areas only. ■ Only concrete from mixer truck chutes should be washed into concrete wash out. ■ Concrete washout from concrete pumper bins can be washed into concrete pumper trucks and discharged into designated washout area or properly disposed of or recycled offsite. ■ Once concrete wastes are washed into the designated area and allowed to harden, the concrete should be broken up, removed, and disposed of per WM-5, Solid Waste Management. Dispose of or recycle hardened concrete on a regular basis. ■ Temporary Concrete Washout Facility (Type Above Grade) Temporary concrete washout facility (type above grade) should be constructed as shown on the details at the end of this BMP, with a recommended minimum length and minimum width of 10 ft; however, smaller sites or jobs may only need a smaller washout facility. With any washout, always maintain a sufficient quantity and volume to contain all liquid and concrete waste generated by washout operations. Materials used to construct the washout area should conform to the provisions detailed in their respective BMPs (e.g., SE-8 Sandbag Barrier). Plastic lining material should be a minimum of 10 mil in polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material. Alternatively, portable removable containers can be used as above grade concrete washouts. Also called a "roll-off'; this concrete washout facility should be properly sealed to prevent leakage, and should be removed from the site and replaced when the container reaches 75% capacity. ■ Temporary Concrete Washout Facility (Type Below Grade) Temporary concrete washout facilities (type below grade) should be constructed as shown on the details at the end of this BMP, with a recommended minimum length and minimum width of 10 ft. The quantity and volume should be sufficient to contain all liquid and concrete waste generated by washout operations. Lath and flagging should be commercial type. Plastic lining material should be a minimum of 10 mil polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 4 of 7 Concrete Waste Management WM-8 The base of a washout facility should be free of rock or debris that may damage a plastic liner. Removal of Temporary Concrete Washout Facilities ■ When temporary concrete washout facilities are no longer required for the work, the hardened concrete should be removed and properly disposed or recycled in accordance with federal, state or local regulations. Materials used to construct temporary concrete washout facilities should be removed from the site of the work and properly disposed or recycled in accordance with federal, state or local regulations .. ■ Holes, depressions or other ground disturbance caused by the removal of the temporary concrete washout facilities should be backfilled and repaired. Costs All of the above are low cost measures. Roll-off concrete washout facilities can be more costly than other measures due to removal and replacement; however, provide a cleaner alternative to traditional washouts. The type of washout facility, size, and availability of materials will determine the cost of the washout. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Temporary concrete washout facilities should be maintained to provide adequate holding capacity with a minimum freeboard of 4 in. for above grade facilities and 12 in. for below grade facilities. Maintaining temporary concrete washout facilities should include removing and disposing of hardened concrete and returning the facilities to a functional condition. Hardened concrete materials should be removed and properly disposed or recycled in accordance with federal, state or local regulations. ■ Washout facilities must be cleaned, or new facilities must be constructed and ready for use once the washout is 75% full. ■ Inspect washout facilities for damage (e.g. torn liner, evidence of leaks, signage, etc.). Repair all identified damage. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000, Updated March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 5 of 7 Concrete Waste Management WM-8 LATH & FLAGGING ON ALL SIDES BERM (/) w Cl'.'. <t > 10' MIN SANDBAG D D 10 MIL PLASTIC n SANDBAG BERM D D 0 10 MIL PLASTIC LINING (/) w Cl'.'. <t > TWO-STACKED 2 X 12 ROUGH WOOD FRAME PLAN NOT TO SCALE TYPE "BELOW GRADE " 10' MIN 10 MIL STAKE (TYP) PLASTIC LINING PLAN NOT TO SCALE SECTION A-A NOT TO SCALE 10 MIL PLASTIC LINING WOOD FRAME SECURELY FAS TEN ED AROUND ENTIRE PERIMETER WITH TWO STAKES SECTION B-B NOT TO SCALE NOTES 1. ACTUAL LAYOUT DETERMINED IN FIELD . TYPE "ABOVE GRADE" 2. THE CONCRETE WASHOUT SIGN SHALL BE INSTALLED WITHIN 30 FT. OF THE TEMPORARY CONCRETE WASHOUT FACILITY. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa .org 6 of 7 Concrete Waste Management WM-8 10' MIN f-------.-~--~--~-----.---7\.__STAKE 2" (/] w 0::: <( > B 10 MIL PLASTIC LINING PLAN NOT TO SCALE (TYP) B STRAW BALE (TYP) 4" STAPLE DETAIL PLYWOOD 48" X 24" PAINTED WHITE TYPE "ABOVE GRADE" STAPLES (2 PER BALE) NATIVE MATERIAL (OPTIONAL) November 2009 WITH STRAW BALES 10 MIL PLASTIC WOOD OR METAL STAKES (2 PER BALE) SECTION B-B NOT TO SCALE 0 0 0 CONCRETE WASHOU BLACK LETTERS 6" HEIGHT 0.5" LAG SCREWS WOOD POST 3'' X 3" X 8' CONCRETE WASHOUT SIGN DETAIL (OR EQUIVALENT) BINDING WIRE STRAW BALE NOTES 1. ACTUAL LAYOUT DETERMINED IN FIELD. 2. THE CONCRETE WASHOUT SIGN SHALL BE INSTALLED WITHIN 30 FT. OF THE TEMPORARY CONCRETE WASHOUT FACILITY. Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 7 of 7 Sanitary /Septic Waste Management WM-9 ~ Description and Purpose Proper sanitary and septic waste management prevent the discharge of pollutants to stormwater from sanitary and septic waste by providing convenient, well-maintained facilities, and arranging for regular service and disposal. Suitable Applications Sanitary septic waste management practices are suitable for use at all construction sites that use temporary or portable sanitary and septic waste systems. Limitations None identified. Implementation Sanitary or septic wastes should be treated or disposed of in accordance with state and local requirements. In many cases, one contract with a local facility supplier will be all that it takes to make sure sanitary wastes are properly disposed. Storage and Disposal Procedures ■ Temporary sanitary facilities should be located away from drainage facilities, watercourses, and from traffic circulation. If site conditions allow, place portable facilities a minimum of 50 feet from drainage conveyances and traffic areas. When subjected to high winds or risk of high winds, temporary sanitary facilities should be secured to prevent overturning. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control Non-Stormwater NS Management Control Waste Management and WM Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 0 0 0 0 CALlrORNIA STOR.\IWATER .JI l! 1 of 3 Sanitary /Septic Waste Management WM-9 ■ Temporary sanitary facilities must be equipped with containment to prevent discharge of pollutants to the stormwater drainage system of the receiving water. ■ Consider safety as well as environmental implications before placing temporary sanitary facilities. ■ Wastewater should not be discharged or buried within the project site. ■ Sanitary and septic systems that discharge directly into sanitary sewer systems, where permissible, should comply with the local health agency, city, county, and sewer district requirements. ■ Only reputable, licensed sanitary and septic waste haulers should be used. ■ Sanitary facilities should be located in a convenient location. ■ Temporary septic systems should treat wastes to appropriate levels before discharging. ■ If using an onsite disposal system (OSDS), such as a septic system, local health agency requirements must be followed. ■ Temporary sanitary facilities that discharge to the sanitary sewer system should be properly connected to avoid illicit discharges. ■ Sanitary and septic facilities should be maintained in good working order by a licensed service. ■ Regular waste collection by a licensed hauler should be arranged before facilities overflow. ■ If a spill does occur from a temporary sanitary facility, follow federal, state and local regulations for containment and clean-up. Education ■ Educate employees, subcontractors, and suppliers on sanitary and septic waste storage and disposal procedures. ■ Educate employees, subcontractors, and suppliers of potential dangers to humans and the environment from sanitary and septic wastes. ■ Instruct employees, subcontractors, and suppliers in identification of sanitary and septic waste. ■ Hold regular meetings to discuss and reinforce the use of sanitary facilities (incorporate into regular safety meetings). ■ Establish a continuing education program to indoctrinate new employees. Costs All of the above are low cost measures. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 3 Sanitary /Septic Waste Management WM-9 Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Arrange for regular waste collection. ■ If high winds are expected, portable sanitary facilities must be secured with spikes or weighed down to prevent over turning. ■ If spills or leaks from sanitary or septic facilities occur that are not contained and discharge from the site, non-visible sampling of site discharge may be required. Refer to the General Permit or to your project specific Construction Site Monitoring Plan to determine if and where sampling is required. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Water Conservation Practices Description and Purpose Water conservation practices are activities that use water during the construction of a project in a manner that avoids causing erosion and the transport of pollutants offsite. These practices can reduce or eliminate non-stormwater discharges. Suitable Applications Water conservation practices are suitable for all construction sites where water is used, including piped water, metered water, trucked water, and water from a reservoir. Limitations ■ None identified. Implementation ■ Keep water equipment in good working condition. ■ Stabili ze water truck filling area. ■ Repair water leaks promptly. ■ Washing of vehicles and equipment on the construction site is discouraged. ■ Avoid using water to clean construction areas. If water must be used for cleaning or surface preparation, surface should be swept and vacuumed first to remove dirt. This will minimize amount of water required. ■ Direct construction water runoff to areas where it can soak November 2009 California Stormwater BMP Handbook Construction www.casqa.org NS-1 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None ~ ~ 0 0 CAUFOR~IA ~IORM\.YATl:.k ' 1 of 2 Water Conservation Practices NS-1 into the ground or be collected and reused. ■ Authorized non-stormwater discharges to the storm drain system, channels, or receiving waters are acceptable with the implementation of appropriate BMPs. ■ Lock water tank valves to prevent unauthorized use. Costs The cost is small to none compared to the benefits of conserving water. Inspection and Maintenance ■ Inspect and verify that activity based BMPs are in place prior to the commencement of authorized non-stormwater discharges. ■ Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges are occuring. ■ Repair water equipment as needed to prevent unintended discharges. Water trucks Water reservoirs (water buffalos) Irrigation systems Hydrant connections References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 2 Paving and Grinding Operations NS-3 Description and Purpose Prevent or reduce the discharge of pollutants from paving operations, using measures to prevent runon and runoff pollution, properly disposing of wastes, and training employees and subcontractors. The General Permit incorporates Numeric Effluent Limits (NEL) and Numeric Action Levels (NAL) for pH and turbidity (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Many types of construction materials associated with paving and grinding operations, including mortar, concrete, and cement and their associated wastes have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows, which could lead to exceedances of the General Permit requirements. Suitable Applications These procedures are implemented where paving, surfacing, resurfacing, or sawcutting, may pollute stormwater runoff or discharge to the storm drain system or watercourses. Limitations ■ Paving opportunities may be limited during wet weather. ■ Discharges of freshly paved surfaces may raise pH to environmentally harmful levels and trigger permit violations. November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa .org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Tra sh Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 ~ 0 1 of 5 Paving and Grinding Operations NS-3 Implementation General ■ Avoid paving during the wet season when feasible. ■ Reschedule paving and grinding activities if rain is forecasted. ■ Train employees and sub-contractors in pollution prevention and reduction. ■ Store materials away from drainage courses to prevent stormwater runon (see WM-1, Material Delivery and Storage). ■ Protect drainage courses, particularly in areas with a grade, by employing BMPs to divert runoff or to trap and filter sediment. ■ Stockpile material removed from roadways away from drain inlets, drainage ditches, and watercourses. These materials should be stored consistent with WM-3, Stockpile Management. ■ Disposal of PCC (Portland cement concrete) and AC (asphalt concrete) waste should be in conformance with WM-8, Concrete Waste Management. Saw Cutting, Grinding, and Pavement Removal ■ Shovel or vacuum saw-cut slurry and remove from site. Cover or barricade storm drains during saw cutting to contain slurry. ■ When paving involves AC, the following steps should be implemented to prevent the discharge of grinding residue, uncompacted or loose AC, tack coats, equipment cleaners, or unrelated paving materials: AC grindings, pieces, or chunks used in embankments or shoulder backing should not be allowed to enter any storm drains or watercourses. Install inlet protection and perimeter controls until area is stabilized (i.e. cutting, grinding or other removal activities are complete and loose material has been properly removed and disposed of)or permanent controls are in place. Examples of temporary perimeter controls can be found in EC-9, Earth Dikes and Drainage Swales; SE-1, Silt Fence; SE-5, Fiber Rolls, or SE-13 Compost Socks and Berms Collect and remove all broken asphalt and recycle when practical. Old or spilled asphalt should be recycled or disposed of properly. ■ Do not allow saw-cut slurry to enter storm drains or watercourses. Residue from grinding operations should be picked up by a vacuum attachment to the grinding machine, or by sweeping, should not be allowed to flow across the pavement, and should not be left on the surface of the pavement. See also WM-8, Concrete Waste Management, and WM-10, Liquid Waste Management. ■ Pavement removal activities should not be conducted in the rain. ■ Collect removed pavement material by mechanical or manual methods. This material may be recycled for use as shoulder backing or base material. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 2 of 5 Paving and Grinding Operations NS-3 ■ If removed pavement material cannot be recycled, transport the material back to an approved storage site. Asphaltic Concrete Paving ■ If paving involves asphaltic cement concrete, follow these steps: Do not allow sand or gravel placed over new asphalt to wash into storm drains, streets, or creeks. Vacuum or sweep loose sand and gravel and properly dispose of this waste by referring to WM-5, Solid Waste Management. Old asphalt should be disposed of properly. Collect and remove all broken asphalt from the site and recycle whenever possible. Portland Cement Concrete Paving ■ Do not wash sweepings from exposed aggregate concrete into a storm drain system. Collect waste materials by dry methods, such as sweeping or shoveling, and return to aggregate base stockpile or dispose of properly. Allow aggregate rinse to settle. Then, either allow rinse water to dry in a temporary pit as described in WM-8, Concrete Waste Management, or pump the water to the sanitary sewer if authorized by the local wastewater authority. Sealing Operations ■ During chip seal application and sweeping operations, petroleum or petroleum covered aggregate should not be allowed to enter any storm drain or water courses. Apply temporary perimeter controls until structure is stabilized (i.e. all sealing operations are complete and cured and loose materials have been properly removed and disposed). ■ Inlet protection (SE-10, Storm Drain Inlet Protection) should be used during application of seal coat, tack coat, slurry seal, and fog seal. ■ Seal coat, tack coat, slurry seal, or fog seal should not be applied if rainfall is predicted to occur during the application or curing period. Paving Equipment ■ Leaks and spills from paving equipment can contain toxic levels of heavy metals and oil and grease. Place drip pans or absorbent materials under paving equipment when not in use. Clean up spills with absorbent materials and dispose of in accordance with the applicable regulations. See NS-10, Vehicle and Equipment Maintenance, WM-4, Spill Prevention and Control, and WM-10, Liquid Waste Management. ■ Substances used to coat asphalt transport trucks and asphalt spreading equipment should not contain soap and should be non-foaming and non-toxic. ■ Paving equipment parked onsite should be parked over plastic to prevent soil contamination. ■ Clean asphalt coated equipment offsite whenever possible. When cleaning dry, hardened asphalt from equipment, manage hardened asphalt debris as described in WM-5, Solid Waste Management. Any cleaning onsite should follow NS-8, Vehicle and Equipment Cleaning. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 5 Paving and Grinding Operations NS-3 Thermoplastic Striping ■ Thermoplastic striper and pre-heater equipment shutoff valves should be inspected to ensure that they are working properly to prevent leaking thermoplastic from entering drain inlets, the stormwater drainage system, or watercourses. ■ Pre-heaters should be filled carefully to prevent splashing or spilling of hot thermoplastic. Leave six inches of space at the top of the pre-heater container when filling thermoplastic to allow room for material to move. ■ Do not pre-heat, transfer, or load thermoplastic near drain inlets or watercourses. ■ Clean truck beds daily of loose debris and melted thermoplastic. When possible, recycle thermoplastic material. Raised/Recessed Pavement Marker Application and Removal ■ Do not transfer or load bituminous material near drain inlets, the stormwater drainage system, or watercourses. ■ Melting tanks should be loaded with care and not filled to beyond six inches from the top to leave room for splashing. ■ When servicing or filling melting tanks, ensure all pressure is released before removing lids to avoid spills. ■ On large-scale projects, use mechanical or manual methods to collect excess bituminous material from the roadway after removal of markers. Costs ■ All of the above are low cost measures. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of paving and grinding operations. ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Sample stormwater runoff required by the General Permit. ■ Keep ample supplies of drip pans or absorbent materials onsite. ■ Inspect and maintain machinery regularly to minimize leaks and drips. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Non point Source Pollution Control Program, 1995. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 4 of 5 Paving and Grinding Operations NS-3 Hot Mix Asphalt-Paving Handbook AC 150/5370-14, Appendix I, U.S . Army Corps of Engineers, July 1991. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 5 of 5 Vehicle and Equipment Cleaning NS-8 Description and Purpose Vehicle and equipment cleaning procedures and practices eliminate or reduce the discharge of pollutants to stormwater from vehicle and equipment cleaning operations. Procedures and practices include but are not limited to: using offsite facilities; washing in designated, contained areas only; eliminating discharges to the storm drain by infiltrating the wash water; and training employees and subcontractors in proper cleaning procedures. Suitable Applications These procedures are suitable on all construction sites where vehicle and equipment cleaning is performed. Limitations Even phosphate-free, biodegradable soaps have been shown to be toxic to fish before the soap degrades. Sending vehicles/equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/Exit. Implementation Other options to washing equipment onsite include contracting with either an offsite or mobile commercial washing business. These businesses may be better equipped to handle and dispose of the wash waters properly. Performing this work offsite can also be economical by eliminating the need for a separate washing operation onsite. If washing operations are to take place onsite, then: November 2009 California Stormwater BMP Handbook Construction www.casqa .org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective 00 Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 CALIFORNIA STORM WATER \ 1 of 3 Vehicle and Equipment Cleaning NS-8 ■ Use phosphate-free, biodegradable soaps. ■ Educate employees and subcontractors on pollution prevention measures. ■ Do not permit steam cleaning onsite. Steam cleaning can generate significant pollutant concentrates. ■ Cleaning of vehicles and equipment with soap, solvents or steam should not occur on the project site unless resulting wastes are fully contained and disposed of. Resulting wastes should not be discharged or buried, and must be captured and recycled or disposed according to the requirements ofWM-10, Liquid Waste Management or WM-6, Hazardous Waste Management, depending on the waste characteristics. Minimize use of solvents. Use of diesel for vehicle and equipment cleaning is prohibited. ■ All vehicles and equipment that regularly enter and leave the construction site must be cleaned offsite. ■ When vehicle and equipment washing and cleaning must occur onsite, and the operation cannot be located within a structure or building equipped with appropriate disposal facilities, the outside cleaning area should have the following characteristics: Located away from storm drain inlets, drainage facilities, or watercourses Paved with concrete or asphalt and bermed to contain wash waters and to prevent runon and runoff Configured with a sump to allow collection and disposal of wash water No discharge of wash waters to storm drains or watercourses Used only when necessary ■ When cleaning vehicles and equipment with water: Costs Use as little water as possible. High-pressure sprayers may use less water than a hose and should be considered Use positive shutoff valve to minimize water usage Facility wash racks should discharge to a sanitary sewer, recycle system or other approved discharge system and must not discharge to the storm drainage system, watercourses, or to groundwater Cleaning vehicles and equipment at an offsite facility may reduce overall costs for vehicle and equipment cleaning by eliminating the need to provide similar services onsite. When onsite cleaning is needed, the cost to establish appropriate facilities is relatively low on larger, long- duration projects, and moderate to high on small, short-duration projects. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 3 Vehicle and Equipment Cleaning NS-8 Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. ■ Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Inspection and maintenance is minimal, although some berm repair may be necessary. ■ Monitor employees and subcontractors throughout the duration of the construction project to ensure appropriate practices are being implemented. ■ Inspect sump regularly and remove liquids and sediment as needed. ■ Prohibit employees and subcontractors from washing personal vehicles and equipment on the construction site. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Swisher, R.D. Surfactant Biodegradation, Marcel Decker Corporation, 1987. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Vehicle and Equipment Fueling NS-9 Description and Purpose Vehicle equipment fueling procedures and practices are designed to prevent fuel spills and leaks, and reduce or eliminate contamination of stormwater. This can be accomplished by using offsite facilities, fueling in designated areas only, enclosing or covering stored fuel, implementing spill controls, and training employees and subcontractors in proper fueling procedures. Suitable Applications These procedures are suitable on all construction sites where vehicle and equipment fueling takes place. Limitations Onsite vehicle and equipment fueling should only be used where it is impractical to send vehicles and equipment offsite for fueling. Sending vehicles and equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/ Exit. Implementation ■ Use offsite fueling stations as much as possible. These businesses are better equipped to handle fuel and spills properly. Performing this work offsite can also be economical by eliminating the need for a separate fueling area at a site. ■ Discourage "topping-off' of fuel tanks. ■ Absorbent spill cleanup materials and spill kits should be available in fueling areas and on fueling trucks, and should November 2009 California Stormwater BMP Handbook Construction www.casqa.org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 1 of 3 Vehicle and Equipment Fueling NS-9 be disposed of properly after use. ■ Drip pans or absorbent pads should be used during vehicle and equipment fueling, unless the fueling is performed over an impermeable surface in a dedicated fueling area. ■ Use absorbent materials on small spills. Do not hose down or bury the spill. Remove the adsorbent materials promptly and dispose of properly. ■ Avoid mobile fueling of mobile construction equipment around the site; rather, transport the equipment to designated fueling areas. With the exception of tracked equipment such as bulldozers and large excavators, most vehicles should be able to travel to a designated area with little lost time. ■ Train employees and subcontractors in proper fueling and cleanup procedures. ■ When fueling must take place onsite, designate an area away from drainage courses to be used. Fueling areas should be identified in the SWPPP. ■ Dedicated fueling areas should be protected from stormwater runon and runoff, and should be located at least 50 ft away from downstream drainage facilities and watercourses. Fueling must be performed on level-grade areas. ■ Protect fueling areas with berms and dikes to prevent runon, runoff, and to contain spills. ■ Nozzles used in vehicle and equipment fueling should be equipped with an automatic shutoff to control drips. Fueling operations should not be left unattended. ■ Use vapor recovery nozzles to help control drips as well as air pollution where required by Air Quality Management Districts (AQMD). ■ Federal, state, and local requirements should be observed for any stationary above ground storage tanks. Costs ■ All of the above measures are low cost except for the capital costs of above ground tanks that meet all local environmental, zoning, and fire codes. Inspection and Maintenance ■ Vehicles and equipment should be inspected each day of use for leaks. Leaks should be repaired immediately or problem vehicles or equipment should be removed from the project site. ■ Keep ample supplies of spill cleanup materials onsite. ■ Immediately clean up spills and properly dispose of contaminated soil and cleanup materials. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 3 Vehicle and Equipment Fueling NS-9 References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Non point Source Pollution Control Program, 1995. Coastal Non point Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Vehicle & Equipment Maintenance NS-10 Description and Purpose Prevent or reduce the contamination of stormwater resulting from vehicle and equipment maintenance by running a "dry and clean site". The best option would be to perform maintenance activities at an off site facility. If this option is not available then work should be performed in designated areas only, while providing cover for materials stored outside, checking for leaks and spills, and containing and cleaning up spills immediately. Employees and subcontractors must be trained in proper procedures. Suitable Applications These procedures are suitable on all construction projects where an onsite yard area is necessary for storage and maintenance of heavy equipment and vehicles. Limitations Onsite vehicle and equipment maintenance should only be used where it is impractical to send vehicles and equipment offsite for maintenance and repair. Sending vehicles/equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/Exit. Outdoor vehicle or equipment maintenance is a potentially significant source of stormwater pollution. Activities that can contaminate stormwater include engine repair and service, changing or replacement of fluids, and outdoor equipment storage and parking (engine fluid leaks). For further information on vehicle or equipment servicing, see NS-8, Vehicle and Equipment Cleaning, and NS-9, Vehicle and November 2009 California Stormwater BMP Handbook Construction www.casqa.org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment 0 Nutrients 0 Trash 0 Metals Bacteria Oil and Grease 0 Organics 0 Potential Alternatives None 1 of 4 Vehicle & Equipment Maintenance NS-10 Equipment Fueling. Implementation ■ Use offsite repair shops as much as possible. These businesses are better equipped to handle vehicle fluids and spills properly. Performing this work offsite can also be economical by eliminating the need for a separate maintenance area. ■ If maintenance must occur onsite, use designated areas, located away from drainage courses. Dedicated maintenance areas should be protected from stormwater runon and runoff, and should be located at least 50 ft from downstream drainage facilities and watercourses. ■ Drip pans or absorbent pads should be used during vehicle and equipment maintenance work that involves fluids, unless the maintenance work is performed over an impermeable surface in a dedicated maintenance area. ■ Place a stockpile of spill cleanup materials where it will be readily accessible. ■ All fueling trucks and fueling areas are required to have spill kits and/ or use other spill protection devices. ■ Use adsorbent materials on small spills. Remove the absorbent materials promptly and dispose of properly. ■ Inspect onsite vehicles and equipment daily at startup for leaks, and repair immediately. ■ Keep vehicles and equipment clean; do not allow excessive build-up of oil and grease. ■ Segregate and recycle wastes, such as greases, used oil or oil filters, antifreeze, cleaning solutions, automotive batteries, hydraulic and transmission fluids. Provide secondary containment and covers for these materials if stored onsite. ■ Train employees and subcontractors in proper maintenance and spill cleanup procedures. ■ Drip pans or plastic sheeting should be placed under all vehicles and equipment placed on docks, barges, or other structures over water bodies when the vehicle or equipment is planned to be idle for more than 1 hour. ■ For long-term projects, consider using portable tents or covers over maintenance areas if maintenance cannot be performed offsite. ■ Consider use of new, alternative greases and lubricants, such as adhesive greases, for chassis lubrication and fifth-wheel lubrication. ■ Properly dispose of used oils, fluids, lubricants, and spill cleanup materials. ■ Do not place used oil in a dumpster or pour into a storm drain or watercourse. ■ Properly dispose of or recycle used batteries. ■ Do not bury used tires. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 4 Vehicle & Equipment Maintenance NS-10 ■ Repair leaks of fluids and oil immediately. Listed below is further information if you must perform vehicle or equipment maintenance onsite. Safer Alternative Products ■ Consider products that are less toxic or hazardous than regular products. These products are often sold under an "environmentally friendly" label. ■ Consider use of grease substitutes for lubrication of truck fifth-wheels. Follow manufacturers label for details on specific uses. ■ Consider use of plastic friction plates on truck fifth-wheels in lieu of grease. Follow manufacturers label for details on specific uses. Waste Reduction Parts are often cleaned using solvents such as trichloroethylene, trichloroethane, or methylene chloride. Many of these cleaners are listed in California Toxic Rule as priority pollutants. These materials are harmful and must not contaminate stormwater. They must be disposed of as a hazardous waste. Reducing the number of solvents makes recycling easier and reduces hazardous waste management costs. Often, one solvent can perform a job as well as two different solvents. Also, if possible, eliminate or reduce the amount of hazardous materials and waste by substituting non-hazardous or less hazardous materials. For example, replace chlorinated organic solvents with non-chlorinated solvents. Non-chlorinated solvents like kerosene or mineral spirits are less toxic and less expensive to dispose of properly. Check the list of active ingredients to see whether it contains chlorinated solvents. The "chlor" term indicates that the solvent is chlorinated. Also, try substituting a wire brush for solvents to clean parts. Recycling and Disposal Separating wastes allows for easier recycling and may reduce disposal costs. Keep hazardous wastes separate, do not mix used oil solvents, and keep chlorinated solvents (like,- trichloroethane) separate from non-chlorinated solvents (like kerosene and mineral spirits). Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip pans or other open containers lying around. Provide cover and secondary containment until these materials can be removed from the site. Oil filters can be recycled. Ask your oil supplier or recycler about recycling oil filters. Do not dispose of extra paints and coatings by dumping liquid onto the ground or throwing it into dumpsters. Allow coatings to dry or harden before disposal into covered dumpsters. Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries, even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Costs All of the above are low cost measures. Higher costs are incurred to setup and maintain onsite maintenance areas. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 4 Vehicle & Equipment Maintenance NS-10 Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. ■ Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Keep ample supplies of spill cleanup materials onsite. ■ Maintain waste fluid containers in leak proof condition. ■ Vehicles and equipment should be inspected on each day of use. Leaks should be repaired immediately or the problem vehicle(s) or equipment should be removed from the project site. ■ Inspect equipment for damaged hoses and leaky gaskets routinely. Repair or replace as needed. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995. Coastal Non point Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; USEPA, April 1992. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 4 of 4 Concrete Curing Description and Purpose Concrete curing is used in the construction of structures such as bridges, retaining walls, pump houses, large slabs, and structured foundations. Concrete curing includes the use of both chemical and water methods. Concrete and its associated curing materials have basic chemical properties that can raise the pH of water to levels outside of the permitted range. Discharges of stormwater and non-stormwater exposed to concrete during curing may have a high pH and may contain chemicals, metals, and fines. The General Permit incorporates Numeric Effluent Limits (NEL) and Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Proper procedures and care should be taken when managing concrete curing materials to prevent them from coming into contact with stormwater flows, which could result in a high pH discharge. Suitable Applications Suitable applications include all projects where Portland Cement Concrete (PCC) and concrete curing chemicals are placed where they can be exposed to rainfall, runoff from other areas, or where runoff from the PCC will leave the site. November 2009 California Stormwater BMP Handbook Construction www.casqa.org NS-12 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater 0 Management Control WM Waste Management and 0 Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment 0 Nutrients Tra sh Metals 0 Bacteria Oil and Grease 0 Organics Potential Alternatives None 1 of 3 Concrete Curing NS-12 Limitations ■ Runoff contact with concrete waste can raise pH levels in the water to environmentally harmful levels and trigger permit violations. Implementation Chemical Curing ■ Avoid over spray of curing compounds. ■ Minimize the drift by applying the curing compound close to the concrete surface. Apply an amount of compound that covers the surface, but does not allow any runoff of the compound. ■ Use proper storage and handling techniques for concrete curing compounds. Refer to WM- 1, Material Delivery and Storage. ■ Protect drain inlets prior to the application of curing compounds. ■ Refer to WM-4, Spill Prevention and Control. Water Curing for Bridge Decks, Retaining Walls, and other Structures ■ Direct cure water away from inlets and watercourses to collection areas for evaporation or other means of removal in accordance with all applicable permits. See WM-8 Concrete Waste Management. ■ Collect cure water at the top of slopes and transport to a concrete waste management area in a non-erosive manner. See EC-9 Earth Dikes and Drainage Swales, EC-10, Velocity Dissipation Devices, and EC-11, Slope Drains. ■ Utilize wet blankets or a similar method that maintains moisture while minimizing the use and possible discharge of water. Education • Educate employees, subcontractors, and suppliers on proper concrete curing techniques to prevent contact with discharge as described herein. • Arrange for the QSP or the appropriately trained contractor's superintendent or representative to oversee and enforce concrete curing procedures. Costs All of the above measures are generally low cost. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 3 Concrete Curing NS-12 ■ Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Sample non-stormwater discharges and stormwater runoff that contacts uncured and partially cured concrete as required by the General Permit. ■ Ensure that employees and subcontractors implement appropriate measures for storage, handling, and use of curing compounds. ■ Inspect cure containers and spraying equipment for leaks. References Blue Print for a Clean Bay-Construction-Related Industries: Best Management Practices for Stormwater Pollution Prevention; Santa Clara Valley Non Point Source Pollution Control Program, 1992. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Concrete Finishing Description and Purpose Concrete finishing methods are used for bridge deck rehabilitation, paint removal, curing compound removal, and final surface finish appearances. Methods include sand blasting, shot blasting, grinding, or high pressure water blasting. Stormwater and non-stormwater exposed to concrete finishing by-products may have a high pH and may contain chemicals, metals, and fines. Proper procedures and implementation of appropriate BMPs can minimize the impact that concrete-finishing methods may have on stormwater and non-stormwater discharges. The General Permit incorporates Numeric Effluent Limits (NEL) and Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project's risk level and if you are subject to these requirements). Concrete and its associated curing materials have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows, which could lead to exceedances of the General Permit requirements. Suitable Applications These procedures apply to all construction locations where concrete finishing operations are performed. November 2009 California Stormwater BMP Handbook Construction www.casqa.org NS-13 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None 0 0 CALIFORNIA STORMWI\TER ' ' 1 of 3 Concrete Finishing NS-13 Limitations ■ Runoff contact with concrete waste can raise pH levels in the water to environmentally harmful levels and trigger permit violations. Implementation ■ Collect and properly dispose of water from high-pressure water blasting operations. ■ Collect contaminated water from blasting operations at the top of slopes. Transport or dispose of contaminated water while using BMPs such as those for erosion control. Refer to EC-9, Earth Dikes and Drainage Swales, EC-10, Velocity Dissipation Devices, and EC-11, Slope Drains. ■ Direct water from blasting operations away from inlets and watercourses to collection areas for infiltration or other means of removal (dewatering). Refer to NS-2 Dewatering Operations. ■ Protect inlets during sandblasting operations. Refer to SE-10, Storm Drain Inlet Protection. ■ Refer to WM-8, Concrete Waste Management for disposal of concrete debris. ■ Minimize the drift of dust and blast material as much as possible by keeping the blasting nozzle close to the surface. ■ When blast residue contains a potentially hazardous waste, refer to WM-6, Hazardous Waste Management. Education ■ Educate employees, subcontractors, and suppliers on proper concrete finishing techniques to prevent contact with discharge as described herein. ■ Arrange for the QSP or the appropriately trained contractor's superintendent or representative to oversee and enforce concrete finishing procedures. Costs These measures are generally of low cost. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. ■ Sample non-storm water discharges and stormwater runoff that contacts concrete dust and debris as required by the General Permit. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 2 of 3 Concrete Finishing NS-13 ■ Sweep or vacuum up debris from sandblasting at the end of each shift. ■ At the end of each work shift, remove and contain liquid and solid waste from containment structures, if any, and from the general work area. ■ Inspect containment structures for damage prior to use and prior to onset of forecasted rain. References Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Non point Source Pollution Control Program, 1995. Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 3 Silt Fence Description and Purpose A silt fence is made of a woven geotextile that has been entrenched, attached to supporting poles, and sometimes backed by a plastic or wire mesh for support. The silt fence detains sediment-laden water, promoting sedimentation behind the fence. Suitable Applications Silt fences are suitable for perimeter control, placed below areas where sheet flows discharge from the site. They could also be used as interior controls below disturbed areas where runoff may occur in the form of sheet and rill erosion and around inlets within disturbed areas (SE-10). Silt fences are generally ineffective in locations where the flow is concentrated and are only applicable for sheet or overland flows . Silt fences are most effective when used in combination with erosion controls. Suitable applications include: ■ Along the perimeter of a project. ■ Below the toe or down slope of exposed and erodible slopes. ■ Along streams and channels. ■ Around temporary spoil areas and stockpiles. ■ Around inlets. ■ Below other small cleared areas. November 2009 Californ ia Stormwa ter BMP Handbook Construction www.casqa.org SE-1 Categories EC SE TC WE NS Erosion Control Sediment Control Tracking Control Wind Erosion Control Non-Stormwater Management Control Waste Management and WM Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-5 Fiber Rolls SE -6 Gravel Bag Berm SE -8 Sandbag Barrier SE-10 Storm Drain Inlet Protection S E-14 Biofilter Bags 0 1 of 8 Silt Fence SE-1 Limitations ■ Do not use in streams, channels, drain inlets, or anywhere flow is concentrated. ■ Do not use in locations where ponded water may cause a flooding hazard. Runoff typically ponds temporarily on the upstream side of silt fence. ■ Do not use silt fence to divert water flows or place across any contour line. Fences not constructed on a level contour, or fences used to divert flow will concentrate flows resulting in additional erosion and possibly overtopping or failure of the silt fence. ■ Improperly installed fences are subject to failure from undercutting, overtopping, or collapsing. ■ Not effective unless trenched and keyed in. ■ Not intended for use as mid-slope protection on slopes greater than 4:1 (H:V). ■ Do not use on slopes subject to creeping, slumping, or landslides. Implementation General A silt fence is a temporary sediment barrier consisting of woven geotextile stretched across and attached to supporting posts, trenched-in, and, depending upon the strength of fabric used, supported with plastic or wire mesh fence. Silt fences trap sediment by intercepting and detaining small amounts of sediment-laden runoff from disturbed areas in order to promote sedimentation behind the fence. The following layout and installation guidance can improve performance and should be followed: ■ Use principally in areas where sheet flow occurs. ■ Install along a level contour, so water does not pond more than 1.5 ft at any point along the silt fence. ■ The maximum length of slope draining to any point along the silt fence should be 200 ft or less. ■ The maximum slope perpendicular to the fence line should be 1:1. ■ Provide sufficient room for runoff to pond behind the fence and to allow sediment removal equipment to pass between the silt fence and toes of slopes or other obstructions. About 1200 ft2 of ponding area should be provided for every acre draining to the fence. ■ Turn the ends of the filter fence uphill to prevent stormwater from flowing around the fence. ■ Leave an undisturbed or stabilized area immediately down slope from the fence where feasible. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 8 Silt Fence SE-1 ■ Silt fences should remain in place until the disturbed area is permanently stabilized, after which, the silt fence should be removed and properly disposed. ■ Silt fence should be used in combination with erosion source controls up slope in order to provide the most effective sediment control. ■ Be aware of local regulations regarding the type and installation requirements of silt fence, which may differ from those presented in this fact sheet. Design and Layout The fence should be supported by a plastic or wire mesh if the fabric selected does not have sufficient strength and bursting strength characteristics for the planned application (as recommended by the fabric manufacturer). Woven geotextile material should contain ultraviolet inhibitors and stabilizers to provide a minimum of six months of expected usable construction life at a temperature range of o °F to 120 °F. ■ Layout in accordance with attached figures. ■ For slopes steeper than 2:1 (H:V) and that contain a high number of rocks or large dirt clods that tend to dislodge, it may be necessary to install additional protection immediately adjacent to the bottom of the slope, prior to installing silt fence. Additional protection may be a chain link fence or a cable fence. ■ For slopes adjacent to sensitive receiving waters or Environmentally Sensitive Areas (ESAs), silt fence should be used in conjunction with erosion control BMPs. Standard vs. Heavy Duty Silt Fence Standard Silt Fence ■ Generally applicable in cases where the slope of area draining to the silt fence is 4:1 (H:V) or less. ■ Used for shorter durations, typically 5 months or less ■ Area draining to fence produces moderate sediment loads. Heavy Duty Silt Fence ■ Use is generally limited to 8 months or less. ■ Area draining to fence produces moderate sediment loads. ■ Heavy duty silt fence usually has 1 or more of the fo llowing characteristics, not possessed by standard silt fence. o Fence fabric has higher tensile strength. o Fabric is reinforced with wire backing or additional support. o Posts are spaced closer than pre-manufactured, standard silt fence products. o Posts are metal (steel or aluminum) Materials Standard Silt Fence ■ Silt fence material should be woven geotextile with a minimum width of 36 in. and a minimum tensile strength of 100 lb force. The fabric should conform to the requirements in ASTM designation D4632 and should have an integral reinforcement layer. The November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa.org 3 of 8 Silt Fence SE-1 reinforcement layer should be a polypropylene, or equivalent, net provided by the manufacturer. The permittivity of the fabric should be between 0.1 sec-I and 0.15 sec-I in conformance with the requirements in ASTM designation D4491. ■ Wood stakes should be commercial quality lumber of the size and shape shown on the plans. Each stake should be free from decay, splits or cracks longer than the thickness of the stake or other defects that would weaken the stakes and cause the stakes to be structurally unsuitable. ■ Staples used to fasten the fence fabric to the stakes should be not less than 1.75 in. long and should be fabricated from 15 gauge or heavier wire. The wire used to fasten the tops of the stakes together when joining two sections of fence should be 9 gauge or heavier wire. Galvanizing of the fastening wire will not be required. Heavy-Duty Silt Fence ■ Some silt fence has a wire backing to provide additional support, and there are products that may use prefabricated plastic holders for the silt fence and use metal posts or bar reinforcement instead of wood stakes. If bar reinforcement is used in lieu of wood stakes, use number four or greater bar. Provide end protection for any exposed bar reinforcement for health and safety purposes. Installation Guidelines -Traditional Method Silt fences are to be constructed on a level contour. Sufficient area should exist behind the fence for ponding to occur without flooding or overtopping the fence. ■ A trench should be excavated approximately 6 in. wide and 6 in. deep along the line of the proposed silt fence (trenches should not be excavated wider or deeper than necessary for proper silt fence installation). ■ Bottom of the silt fence should be keyed-in a minimum of 12 in. ■ Posts should be spaced a maximum of 6 ft apart and driven securely into the ground a minimum of 18 in. or 12 in. below the bottom of the trench. ■ When standard strength geotextile is used, a plastic or wire mesh support fence should be fastened securely to the upslope side of posts using heavy-duty wire staples at least 1 in. long. The mesh should extend into the trench. ■ When extra-strength geotextile and closer post spacing are used, the mesh support fence may be eliminated. ■ Woven geotextile should be purchased in a long roll, then cut to the length of the barrier. When joints are necessary, geotextile should be spliced together only at a support post, with a minimum 6 in. overlap and both ends securely fastened to the post. ■ The trench should be backfilled with native material and compacted. ■ Construct silt fences with a setback of at least 3 ft from the toe of a slope. Where, due to specific site conditions, a 3 ft setback is not available, the silt fence may be constructed at the November 2009 California Stormwater BMP Handbook Construction www.casqa.org 4 of 8 Silt Fence SE-1 toe of the slope, but should be constructed as far from the toe of the slope as practicable. Silt fences close to the toe of the slope will be less effective and more difficult to maintain. ■ Construct the length of each reach so that the change in base elevation along the reach does not exceed 1/3 the height of the barrier; in no case should the reach exceed 500 ft. ■ Cross barriers should be a minimum of 1/ 3 and a maximum of½ the height of the linear barrier. ■ See typical installation details at the end of this fact sheet. Installation Guidelines -Static Slicing Method ■ Static Slicing is defined as insertion of a narrow blade pulled behind a tractor, similar to a plow blade, at least 10 inches into the soil while at the same time pulling silt geotextile fabric into the ground through the opening created by the blade to the depth of the blade. Once the gerotextile is installed, the soil is compacted using tractor tires. ■ This method will not work with pre-fabricated, wire backed silt fence. ■ Benefits: o Ease of installation (most often done with a 2 person crew). In addition, installation using static slicing has been found to be more efficient on slopes, in rocky soils, and in saturated soils. Costs o Minimal soil disturbance. o Greater level of compaction along fence, leading to higher performance (i.e. greater sediment retention). o Uniform installation. o Less susceptible to undercutting/undermining. ■ It should be noted that costs vary greatly across regions due to available supplies and labor costs. ■ Average annual cost for installation using the traditional silt fence installation method (assumes 6 month useful life) is $7 per linear foot based on vendor research. Range of cost is $3.50 -$9.10 per linear foot. ■ In tests, the slicing method required 0.33 man hours per 100 linear feet, while the trenched based systems required as much as 1.01 man hours per linear foot. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Repair undercut silt fences. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 5 of 8 Silt Fence SE-1 ■ Repair or replace split, torn, slumping, or weathered fabric. The lifespan of silt fence fabric is generally 5 to 8 months. ■ Silt fences that are damaged and become unsuitable for the intended purpose should be removed from the site of work, disposed, and replaced with new silt fence barriers. ■ Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. ■ Silt fences should be left in place until the upstream area is permanently stabilized. Until then, the silt fence should be inspected and maintained regularly. ■ Remove silt fence when upgradient areas are stabilized. Fill and compact post holes and anchor trench, remove sediment accumulation, grade fence alignment to blend with adjacent ground, and stabilize disturbed area. References Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995. National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group-Working Paper, USEPA, April 1992. Sedimentation and Erosion Control Practices, and Inventory of Current Practices (Draft), UESPA, 1990. Southeastern Wisconsin Regional Planning Commission (SWRPC). Costs of Urban Non point Source Water Pollution Control Measures. Technical Report No. 31. Southeastern Wisconsin Regional Planning Commission, Waukesha, WI. 1991 Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft, 1991. U.S. Environmental Protection Agency (USEPA). Stormwater Management for Industrial Activities: Developing Pollution Prevention Plans and Best Management Practices. U.S. Environmental Protection Agency, Office of Water, Washington, DC, 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988.Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 6 of 8 z 0 < (1) 3 CJ"" (1) ., N 0 0 '° n ru ~ ., ::, iii" {fl rt :;; :;; no :;; 0 ., . ::, 3 n Ul :,: OJ q-OJ VJ C rt .o n ro ru rt -, . 6 ~::, lD CJJ 3: "U I ru ::, 0.. CJ"" 0 0 ;,c- -..J 0 ...,, O'.) C"oss barrier {Sec note 10) lliOTES _j ~ I ,/ Cr039 bcrrler- Optlo,,al molntencnce opening detail .El..AfL SILT FENCE 1. Consl'1Jct the length of each n:och ao hot the chonge ii bose clevot1011 a'ong the reoc~ doea not eKceed 1 ~ !he hflgh1 of the linear barrier. In no ccse :,hall tho recch length e><ceed 500 . 2. The la,t e•-o• of fence •hell be turned ~-p •lope. J. Slake dimensions ore nomln0I. 4-. Dimension '!"lay \/Ory :0 flt field conditl011.. s. Stokes 9r,0II be epoced at s·-c· ma~lmum and shall be positioned on dowrs:ream !llde of 1ence. 6. Stoke,, to overlap cr,d fence fabrlc to told cround eceh <atoke one full tum. Sea.ire f<1brlc to slake .. rth ◄ staples. 7. Slakes shall bo driven lightly lagclher -to pre••nl polen1iCJI flow-through of -iment cl joint. The tops of lhe stokes •hall be seoJred wrth wire. B. For end otoke, fence fabric ohall be folded around two stokes ore full tum o~d •ecur"<l with 4-olapleli. 9, Mlnhum 4 stcplas per stoka. Dlm•n•lons sh0"'1 ore tyolcol. • 0. Cross borrters ,hell be o mlnl-r1um of 1/3 and a maximum of t /2 the height of the linear barrier. 11, Maintenance open ing, oho I be cono\rucled In c manner lo cnourc BBdlrnent n,molns behind sTit fence. 12. Joining sections slloll not be ploced ct sump locctlons. 13_ Sa'!dbog row• and layers •kcll be offse: to ellmlnote gaps. 14. Add .3-4 bags to crn•s barrier en downgrodienl side of silt 1•nca o, needed to pr8'111n\ by;1aa• or undarminl'lg <1nc ae ollo1YCble bosed on site lirn;1s of di~IU-bonco. ~ i Ser Note 14 CROSS BARRIER DETAI~ SECTION C-C LEGEND Tamped bod(fi11 Slops dlrocUon Olr.sct!on of 110111 s:1t fence of slope en -· -,.... .,, tD :::J n tD en m I .... z 0 < ro 3 O-ro ..., N 0 0 \0 n OJ ::;; 0 ..., ::J <ii' (fl rt :E :E n o :E O ..., • ::J 3 n u, :E QJ q-OJ U'l C rt .o n ro OJ rt ..., 0 6' OJ ..., ::J 3: LO "'O I OJ ::J 0.. 0-0 0 7C' o:i 0 ..., o:i Setback varies (See note 4) SECTION A-A Silt fence fabric DETAIL A 2" X 2" wood stoke Fabric section B Stoke B (See notes 6, 7 & 12) Stoke A Fabric section A (See notes 6, 7 & 12) JOINING SECTION DETAIL (TOP VIEW) Fabric (See note 8) 2" x 2" wood stake (See note 3) END STAKE DETAIL (TOP VIEW) rEnd stoke /~ (See note 2) END DETAIL ~ 1/16" diameter LEGEND Tamped backfill Slape direction Direction of flow STAPLE DETAIL (SEE NOTE 9) Fabric Stoke Fabric Toe of slope End stake (2-loyers high) OPTIONAL MAINTENANCE OPENING DETAIL (SEE NOTE 11) en -· -,... .,, tD :::s n tD en m I .... Fiber Rolls Description and Purpose A fiber roll consists of straw, coir, or other biodegradable materials bound into a tight tubular roll wrapped by netting, which can be photodegradable or natural. Additionally, gravel core fiber rolls are available, which contain an imbedded ballast material such as gravel or sand for additional weight when staking the rolls are not feasible (such as use as inlet protection). When fiber rolls are placed at the toe and on the face of slopes along the contours, they intercept runoff, reduce its flow velocity, release the runoff as sheet flow, and provide removal of sediment from the runoff (through sedimentation). By interrupting the length of a slope, fiber rolls can also reduce sheet and rill erosion until vegetation is established. Suitable Applications Fiber rolls may be suitable: ■ Along the toe, top, face, and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow. ■ At the end of a downward slope where it transitions to a steeper slope. ■ Along the perimeter of a project. ■ As check dams in unlined ditches with minimal grade. ■ Down-slope of exposed soil areas. ■ At operational storm drains as a form of inlet protection. November 2009 California Stormwater BMP Handbook Construction www.casqa.org SE-5 Categories EC Erosion Control ~ SE Sediment Control 0 TC Tracking Control WE Wind Erosion Control NS Non -Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment 0 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-1 Silt Fence SE-6 Gravel Bag Berm SE -8 Sandbag Barrier SE -14 Biofilter Bags CALIFORN IA STOll.\tWATER I \ 11 1 of 5 Fiber Rolls SE-5 ■ Around temporary stockpiles. Limitations ■ Fiber rolls are not effective unless trenched in and staked. ■ Not intended for use in high flow situations. ■ Difficult to move once saturated. ■ If not properly staked and trenched in, fiber rolls could be transported by high flows. ■ Fiber rolls have a very limited sediment capture zone. ■ Fiber rolls should not be used on slopes subject to creep, slumping, or landslide. ■ Rolls typically function for 12-24 months depending upon local conditions. Implementation Fiber Roll Materials ■ Fiber rolls should be prefabricated. ■ Fiber rolls may come manufactured containing polyacrylamide (PAM), a flocculating agent within the roll. Fiber rolls impregnated with PAM provide additional sediment removal capabilities and should be used in areas with fine, clayey or silty soils to provide additional sediment removal capabilities. Monitoring may be required for these installations. ■ Fiber rolls are made from weed free rice straw, flax, or a similar agricultural material bound into a tight tubular roll by netting. ■ Typical fiber rolls vary in diameter from 9 in. to 20 in. Larger diameter rolls are available as well. Installation ■ Locate fiber rolls on level contours spaced as follows: Slope inclination of 4:1 (H:V) or flatter: Fiber rolls should be placed at a maximum interval of 20 ft. Slope inclination between 4:1 and 2:1 (H:V): Fiber Rolls should be placed at a maximum interval of 15 ft. (a closer spacing is more effective). Slope inclination 2:1 (H:V) or greater: Fiber Rolls should be placed at a maximum interval of 10 ft. (a closer spacing is more effective). ■ Prepare the slope before beginning installation. ■ Dig small trenches across the slope on the contour. The trench depth should be¼ to 1/3 of the thickness of the roll, and the width should equal the roll diameter, in order to provide area to backfill the trench. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 5 Fiber Rolls SE-5 ■ It is critical that rolls are installed perpendicular to water movement, and parallel to the slope contour. ■ Start building trenches and installing rolls from the bottom of the slope and work up. ■ It is recommended that pilot holes be driven through the fiber roll. Use a straight bar to drive holes through the roll and into the soil for the wooden stakes. ■ Turn the ends of the fiber roll up slope to prevent runoff from going around the roll. ■ Stake fiber rolls into the trench. Drive stakes at the end of each fiber roll and spaced 4 ft maximum on center. Use wood stakes with a nominal classification of 0.75 by 0 .75 in. and minimum length of 24 in. ■ If more than one fiber roll is placed in a row, the rolls should be overlapped, not abutted. ■ See typical fiber roll installation details at the end of this fact sheet. Removal ■ Fiber rolls can be left in place or removed depending on the type of fiber roll and application (temporary vs. permanent installation). Typically, fiber rolls encased with plastic netting are used for a temporary application because the netting does not biodegrade. Fiber rolls used in a permanent application are typically encased with a biodegradeable material and are left in place. Removal of a fiber roll used in a permanent application can result in greater disturbance. ■ Temporary installations should only be removed when up gradient areas are stabilized per General Permit requirements, and/ or pollutant sources no longer present a hazard. But, they should also be removed before vegetation becomes too mature so that the removal process does not disturb more soil and vegetation than is necessary. Costs Material costs for regular fiber rolls range from $20 -$30 per 25 ft roll. Material costs for PAM impregnated fiber rolls range between 7.00-$9.00 per linear foot, based upon vendor research. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Repair or replace split, torn, unraveling, or slumping fiber rolls. ■ If the fiber roll is used as a sediment capture device, or as an erosion control device to maintain sheet flows, sediment that accumulates in the BMP should be periodically removed November 2009 California Stormwater BMP Handbook Construction www. casqa. org 3 of 5 Fiber Rolls SE-5 in order to maintain BMP effectiveness. Sediment should be removed when sediment accumulation reaches one-third the designated sediment storage depth. ■ If fiber rolls are used for erosion control, such as in a check dam, sediment removal should not be required as long as the system continues to control the grade. Sediment control BMPs will likely be required in conjunction with this type of application. ■ Repair any rills or gullies promptly. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 4 of 5 Fiber Rolls SE-5 November 2009 Vertical spacing measured along the face of the slope varies between Note: Install fiber roll olong o level contour. ~---Install a fiber roll near 1 0' and 20' slope where it transitions into a steeper slope TYPICAL FIBER ROLL INSTALLATION C X ·-0 EE N.T.S. 3/4" X 3/4" wood stokes max 4 ' spacing ENTRENCHMENT DETAIL N.T.S. California Stormwater BMP Handbook Construction www.casqa.org 5 of 5 Street Sweeping and Vacuuming SE-7 Description and Purpose Street sweeping and vacuuming includes use of self-propelled and walk-behind equipment to remove sediment from streets and roadways, and to clean paved surfaces in preparation for final paving. Sweeping and vacuuming prevents sediment from the project site from entering storm drains or receiving waters. Suitable Applications Sweeping and vacuuming are suitable anywhere sediment is tracked from the project site onto public or private paved streets and roads, typically at points of egress. Sweeping and vacuuming are also applicable during preparation of paved surfaces for final paving. Limitations Sweeping and vacuuming may not be effective when sediment is wet or when tracked soil is caked ( caked soil may need to be scraped loose). Implementation ■ Controlling the number of points where vehicles can leave the site will allow sweeping and vacuuming efforts to be focused, and perhaps save money. ■ Inspect potential sediment tracking locations daily. ■ Visible sediment tracking should be swept or vacuumed on a daily basis. ■ Do not use kick brooms or sweeper attachments. These tend to spread the dirt rather than remove it. November 2009 California Stormwater BMP Handbook Construction www.casqa.org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None ~ 0 CAUFORNI,\ STORMWATIR l < 'If 1 of 2 Street Sweeping and Vacuuming SE-7 ■ If not mixed with debris or trash, consider incorporating the removed sediment back into the project Costs Rental rates for self-propelled sweepers vary depending on hopper size and duration of rental. Expect rental rates from $58/hour (3 yd3 hopper) to $88/hour (9 yd3 hopper), plus operator costs. Hourly production rates vary with the amount of area to be swept and amount of sediment . Match the hopper size to the area and expect sediment load to minimize time spent dumping. Inspection and Maintenance ■ Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events, weekly during the rainy season, and at two-week intervals during the non-rainy season. ■ When actively in use, points of ingress and egress must be inspected daily. ■ When tracked or spilled sediment is observed outside the construction limits, it must be removed at least daily. More frequent removal, even continuous removal, may be required in some jurisdictions. ■ Be careful not to sweep up any unknown substance or any object that may be potentially hazardous. ■ Adjust brooms frequently; maximize efficiency of sweeping operations. ■ After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Labor Surcharge and Equipment Rental Rates, State of California Department of Transportation (Caltrans), April 1, 2002 -March 31, 2003. November 2009 California Stormwater BMP Handbook Construction www.casqa .org 2 of 2 Storm Drain Inlet Protection Description and Purpose Storm drain inlet protection consists of a sediment filter or an impounding area in, around or upstream of a storm drain, drop inlet, or curb inlet. Storm drain inlet protection measures temporarily pond runoff before it enters the storm drain, allowing sediment to settle. Some filter configurations also remove sediment by filtering, but usually the ponding action results in the greatest sediment reduction. Temporary geotextile storm drain inserts attach underneath storm drain grates to capture and filter storm water. Suitable Applications Every storm drain inlet receiving runoff from unstabilized or otherwise active work areas should be protected. Inlet protection should be used in conjunction with other erosion and sediment controls to prevent sediment-laden stormwater and non-stormwater discharges from entering the storm drain system. Limitations ■ Drainage area should not exceed 1 acre. ■ In general straw bales should not be used as inlet protection. ■ Requires an adequate area for water to pond without encroaching into portions of the roadway subject to traffic. November 2009 California Stormwater BMP Handbook Construction www.casqa .org SE-10 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment 0 Nutrients Trash ~ Metals Bacteria Oil and Grease Organics Potential Alternatives SE-1 Silt Fence SE-5 Fiber Rolls SE-6 Gravel Bag Berm SE-8 Sandbag Barrier SE-14 Biofilter Bags 1 of 10 Storm Drain Inlet Protection SE-10 ■ Sediment removal may be inadequate to prevent sediment discharges in high flow conditions or if runoff is heavily sediment laden. If high flow conditions are expected, use other onsite sediment trapping techniques in conjunction with inlet protection. ■ Frequent maintenance is required. ■ Limit drainage area to 1 acre maximum. For drainage areas larger than 1 acre, runoff should be routed to a sediment-trapping device designed for larger flows. See BMPs SE-2, Sediment Basin, and SE-3, Sediment Traps. ■ Excavated drop inlet sediment traps are appropriate where relatively heavy flows are expected, and overflow capability is needed. Implementation General Inlet control measures presented in this handbook should not be used for inlets draining more than one acre. Runoff from larger disturbed areas should be first routed through SE-2, Sediment Basin or SE-3, Sediment Trap and/ or used in conjunction with other drainage control, erosion control, and sediment control BMPs to protect the site. Different types of inlet protection are appropriate for different applications depending on site conditions and the type of inlet. Alternative methods are available in addition to the methods described/shown herein such as prefabricated inlet insert devices, or gutter protection devices. Design and Layout Identify existing and planned storm drain inlets that have the potential to receive sediment- laden surface runoff. Determine if storm drain inlet protection is needed and which method to use. ■ The key to successful and safe use of storm drain inlet protection devices is to know where runoff that is directed toward the inlet to be protected will pond or be diverted as a result of installing the protection device. Determine the acceptable location and extent of ponding in the vicinity of the drain inlet. The acceptable location and extent of ponding will influence the type and design of the storm drain inlet protection device. Determine the extent of potential runoff diversion caused by the storm drain inlet protection device. Runoff ponded by inlet protection devices may flow around the device and towards the next downstream inlet. In some cases, this is acceptable; in other cases, serious erosion or downstream property damage can be caused by these diversions. The possibility of runoff diversions will influence whether or not storm drain inlet protection is suitable; and, if suitable, the type and design of the device. ■ The location and extent of ponding, and the extent of diversion, can usually be controlled through appropriate placement of the inlet protection device. In some cases, moving the inlet protection device a short distance upstream of the actual inlet can provide more efficient sediment control, limit ponding to desired areas, and prevent or control diversions. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 2 of 10 Storm Drain Inlet Protection SE-10 ■ Six types of inlet protection are presented below. However, it is recognized that other effective methods and proprietary devices exist and may be selected. Silt Fence: Appropriate for drainage basins with less than a 5% slope, sheet flows, and flows under 0.5 cfs. Excavated Drop Inlet Sediment Trap: An excavated area around the inlet to trap sediment (SE-3). Gravel bag barrier: Used to create a small sediment trap upstream of inlets on sloped, paved streets. Appropriate for sheet flow or when concentrated flow may exceed 0.5 cfs, and where overtopping is required to prevent flooding. Block and Gravel Filter: Appropriate for flows greater than 0.5 cfs. Temporary Geotextile Storm drain Inserts: Different products provide different features. Refer to manufacturer details for targeted pollutants and additional features. Biofilter Bag Barrier: Used to create a small retention area upstream of inlets and can be located on pavement or soil. Biofilter bags slowly filter runoff allowing sediment to settle out. Appropriate for flows under 0.5 cfs. ■ Select the appropriate type of inlet protection and design as referred to or as described in this fact sheet. ■ Provide area around the inlet for water to pond without flooding structures and property. ■ Grates and spaces around all inlets should be sealed to prevent seepage of sediment-laden water. ■ Excavate sediment sumps (where needed) 1 to 2 ft with 2:1 side slopes around the inlet. Installation ■ DI Protection Type 1 -Silt Fence -Similar to constructing a silt fence; see BMP SE-1, Silt Fence. Do not place fabric underneath the inlet grate since the collected sediment may fall into the drain inlet when the fabric is removed or replaced and water flow through the grate will be blocked resulting in flooding. See typical Type 1 installation details at the end of this fact sheet. 1. Excavate a trench approximately 6 in. wide and 6 in. deep along the line of the silt fence inlet protection device. 2. Place 2 in. by 2 in. wooden stakes around the perimeter of the inlet a maximum of 3 ft apart and drive them at least 18 in. into the ground or 12 in. below the bottom of the trench. The stakes should be at least 48 in. 3. Lay fabric along bottom of trench, up side of trench, and then up stakes. See SE-1, Silt Fence, for details. The maximum silt fence height around the inlet is 24 in. 4. Staple the filter fabric (for materials and specifications, see SE-1, Silt Fence) to wooden stakes. Use heavy-duty wire staples at least 1 in. in length. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 10 Storm Drain Inlet Protection SE-10 5. Backfill the trench with gravel or compacted earth all the way around. ■ DI Protection Type 2 -Excavated Drop Inlet Sediment Trap -Install filter fabric fence in accordance with DI Protection Type 1. Size excavated trap to provide a minimum storage capacity calculated at the rate 67 yd3/acre of drainage area. See typical Type 2 installation details at the end of this fact sheet. ■ DI Protection Type 3 -Gravel bag -Flow from a severe storm should not overtop the curb. In areas of high clay and silts, use filter fabric and gravel as additional filter media. Construct gravel bags in accordance with SE-6, Gravel Bag Berm. Gravel bags should be used due to their high permeability. See typical Type 3 installation details at the end of this fact sheet. 1. Construct on gently sloping street. 2. Leave room upstream of barrier for water to pond and sediment to settle. 3. Place several layers of gravel bags -overlapping the bags and packing them tightly together. 4. Leave gap of one bag on the top row to serve as a spillway. Flow from a severe storm (e.g., 10 year storm) should not overtop the curb. ■ DI Protection Type 4 -Block and Gravel Filter -Block and gravel filters are suitable for curb inlets commonly used in residential, commercial, and industrial construction. See typical Type 4 installation details at the end of this fact sheet. 1. Place hardware cloth or comparable wire mesh with 0.5 in. openings over the drop inlet so that the wire extends a minimum of 1 ft beyond each side of the inlet structure. If more than one strip is necessary, overlap the strips. Place woven geotextile over the wire mesh. 2. Place concrete blocks lengthwise on their sides in a single row around the perimeter of the inlet, so that the open ends face outward, not upward. The ends of adjacent blocks should abut. The height of the barrier can be varied, depending on design needs, by stacking combinations of blocks that are 4 in., 8 in., and 12 in. wide. The row of blocks should be at least 12 in. but no greater than 24 in. high. 3. Place wire mesh over the outside vertical face (open end) of the concrete blocks to prevent stone from being washed through the blocks. Use hardware cloth or comparable wire mesh with 0.5 in. opening. 4. Pile washed stone against the wire mesh to the top of the blocks. Use 0.75 to 3 in. ■ DI Protection Type 5 -Temporary Geotextile Insert (proprietary) -Many types of temporary inserts are available. Most inserts fit underneath the grate of a drop inlet or inside of a curb inlet and are fastened to the outside of the grate or curb. These inserts are removable and many can be cleaned and reused. Installation of these inserts differs between manufacturers. Please refer to manufacturer instruction for installation of proprietary devices. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 4 of 10 Storm Drain Inlet Protection SE-10 ■ DI Protection Type 6 -Bio.filter bags -Biofilter bags may be used as a substitute for gravel bags in low-flow situations. Biofilter bags should conform to specifications detailed in SE-14, Biofilter bags. 1. Construct in a gently sloping area. 2. Biofilter bags should be placed around inlets to intercept runoff flows. 3. All bag joints should overlap by 6 in. 4. Leave room upstream for water to pond and for sediment to settle out. 5. Stake bags to the ground as described in the following detail. Stakes may be omitted if bags are placed on a paved surface. Costs ■ Average annual cost for installation and maintenance of DI Type 1-4 and 6 (one year useful life) is $200 per inlet. ■ Temporary geotextile inserts are proprietary and cost varies by region. These inserts can often be reused and may have greater than 1 year of use if maintained and kept undamaged. Average cost per insert ranges from $50-75 plus installation, but costs can exceed $100. This cost does not include maintenance. Inspection and Maintenance ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Silt Fences. If the fabric becomes clogged, torn, or degrades, it should be replaced. Make sure the stakes are securely driven in the ground and are in good shape (i.e., not bent, cracked, or splintered, and are reasonably perpendicular to the ground). Replace damaged stakes. At a minimum, remove the sediment behind the fabric fence when accumulation reaches one-third the height of the fence or barrier height. ■ Gravel Filters. If the gravel becomes clogged with sediment, it should be carefully removed from the inlet and either cleaned or replaced. Since cleaning gravel at a construction site may be difficult, consider using the sediment-laden stone as fill material and put fresh stone around the inlet. Inspect bags for holes, gashes, and snags, and replace bags as needed. Check gravel bags for proper arrangement and displacement. ■ Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. ■ Inspect and maintain temporary geotextile insert devices according to manufacturer's specifications. ■ Remove storm drain inlet protection once the drainage area is stabilized. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 5 of 10 Storm Drain Inlet Protection SE-10 Clean and regrade area around the inlet and clean the inside of the storm drain inlet, as it should be free of sediment and debris at the time of final inspection. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. Stormwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft, 1991. Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 6 of 10 Storm Drain Inlet Protection SE-10 Sheet flow Less than 1 acre 24"± ,x X X X X Geotextile Blanket [Drain inlet SECTION A-A i X X ---x Drain inlet t t --Ill ------- t t X X ~ Fence per SE-01 6" Min overlap at ends of silt fence. Geotextile Blanket 1--s;rt Fence pee SE-01 X I PLAN c:/o NOTES: DI PROTECTION TYPE NOT TO SCALE 1. For use in areas where grading hos been completed and final soil stabilization and seeding are pending. 2. Not applicable in paved areas. 3. Not applicable with concentrated flows. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 7 of 10 Storm Drain Inlet Protection SE-10 Stabilize area and grade uniformly around perimeter r X Geotextile Blanket X !--silt fence Per SE-01 X -~ -~~" ~<«<~'..!',,;::==>I Note: Y)5»%? Remove sediment before reaching one-third full . 11 Drain inlet Section A-A ,--------------7 t t 4' 12" Min 24" Mox Edge of sediment trap Drain inlet Sheet flow I I I I I ----1111 --: i __ ~--~ __ : Notes X I 1 ~----~ 1 -+-+---Geotextile 1 t t x Blanket 1 ~--------------J L Silt fence I I 1-X L ___________________ J X ~-x-:=_-:=_-:=_-=._-=._-=._-=-_-x---_-_-_---_--:__---x---------_ ---~x_J-1 Pion DI PROTECTION TYPE 2 NOT TO SCALE 1. For use in cleared and grubbed and in graded areas. Per SE-01 2. Shape basin so that longest inflow area faces longest length of trap . .3 . For concentrated flows, shape basin in 2: 1 ratio with length oriented towards direction of flow. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 8 of 10 Storm Drain Inlet Protection SE-10 Edge of Pavement Flow-+--- Spillway, 1-bog high Sandbags 2-bogs high TYPICAL PROTECTION FOR INLET ON SUMP Edge of Pavement ----Flow ----+-Flow Spillway, 1-bog high TYPICAL PROTECTION FOR INLET ON GRADE NOTES: 1. Intended for short-term use. 2. Use to inhibit non-storm water flow. 3. Allow for proper maintenance and cleanup. 4. Bogs must be removed ofter adjacent operation is completed 5. Not applicable in areas with high silts and cloys without filter fabric. November 2009 DI PROTECTION TYPE 3 NOT TO SCALE California Stormwater BMP Handbook Construction www.casqa .org Sandbags 2-bogs high 9 of 10 Storm Drain Inlet Protection SE-10 12"- 24" November 2009 ------~------------------~---==----=---- Curb inlet Concrete block laid lengthwise on sides @ perimeter of opening Runoff with sediment Sediment Hardware cloth wire mesh ," '• Hordware cloth or wire mesh Filtered water , . .. ,. Curb inlet DI PROTECTION TYPE 4 NOT TO SCALE California Stormwater BMP Handbook Construction www.casqa .org 10 of 10 Stabilized Construction Entrance/Exit TC-1 Description and Purpose A stabilized construction access is defined by a point of entrance/ exit to a construction site that is stabilized to reduce the tracking of mud and dirt onto public roads by construction vehicles. Suitable Applications Use at construction sites: ■ Where dirt or mud can be tracked onto public roads. ■ Adjacent to water bodies. ■ Where poor soils are encountered. ■ Where dust is a problem during dry weather conditions. Limitations ■ Entrances and exits require periodic top dressing with additional stones. ■ This BMP should be used in conjunction with street sweeping on adjacent public right of way. ■ Entrances and exits should be constructed on level ground only. ■ Stabilized construction entrances are rather expensive to construct and when a wash rack is included, a sediment trap of some kind must also be provided to collect wash water November 2009 California Stormwater BMP Handbook Construction www.casqa.org Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None ~ ~ 0 0 CALIFORNLA STORM WATER ' 1 of 6 Stabilized Construction Entrance/Exit TC-1 runoff. Implementation General A stabilized construction entrance is a pad of aggregate underlain with filter cloth located at any point where traffic will be entering or leaving a construction site to or from a public right of way, street, alley, sidewalk, or parking area. The purpose of a stabilized construction entrance is to reduce or eliminate the tracking of sediment onto public rights of way or streets. Reducing tracking of sediments and other pollutants onto paved roads helps prevent deposition of sediments into local storm drains and production of airborne dust. Where traffic will be entering or leaving the construction site, a stabilized construction entrance should be used. NPDES permits require that appropriate measures be implemented to prevent tracking of sediments onto paved roadways, where a significant source of sediments is derived from mud and dirt carried out from unpaved roads and construction sites. Stabilized construction entrances are moderately effective in removing sediment from equipment leaving a construction site. The entrance should be built on level ground. Advantages of the Stabilized Construction Entrance/Exit is that it does remove some sediment from equipment and serves to channel construction traffic in and out of the site at specified locations. Efficiency is greatly increased when a washing rack is included as part of a stabilized construction entrance/ exit. Design and Layout ■ Construct on level ground where possible. ■ Select 3 to 6 in. diameter stones. ■ Use minimum depth of stones of 12 in. or as recommended by soils engineer. ■ Construct length of 50 ft minimum, and 30 ft minimum width. ■ Rumble racks constructed of steel panels with ridges and installed in the stabilized entrance/ exit will help remove additional sediment and to keep adjacent streets clean. ■ Provide ample turning radii as part of the entrance. ■ Limit the points of entrance/ exit to the construction site. ■ Limit speed of vehicles to control dust. ■ Properly grade each construction entrance/ exit to prevent runoff from leaving the construction site. ■ Route runoff from stabilized entrances/ exits through a sediment trapping device before discharge. ■ Design stabilized entrance/exit to support heaviest vehicles and equipment that will use it. November 2009 California Stormwater BMP Handbook Construction www .casqa.org 2 of 6 Stabilized Construction Entrance/Exit TC-1 ■ Select construction access stabilization (aggregate, asphaltic concrete, concrete) based on longevity, required performance, and site conditions. Do not use asphalt concrete (AC) grindings for stabilized construction access/roadway. ■ If aggregate is selected, place crushed aggregate over geotextile fabric to at least 12 in. depth, or place aggregate to a depth recommended by a geotechnical engineer. A crushed aggregate greater than 3 in. but smaller than 6 in. should be used. ■ Designate combination or single purpose entrances and exits to the construction site. ■ Require that all employees, subcontractors, and suppliers utilize the stabilized construction access. ■ Implement SE-7, Street Sweeping and Vacuuming, as needed. ■ All exit locations intended to be used for more than a two-week period should have stabilized construction entrance/ exit BMPs. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMPs are under way, inspect weekly during the rainy season and of two-week intervals in the non-rainy season to verify continued BMP implementation. ■ Inspect local roads adjacent to the site daily. Sweep or vacuum to remove visible accumulated sediment. ■ Remove aggregate, separate and dispose of sediment if construction entrance/ exit is clogged with sediment. ■ Keep all temporary roadway ditches clear. ■ Check for damage and repair as needed. ■ Replace gravel material when surface voids are visible. ■ Remove all sediment deposited on paved roadways within 24 hours. ■ Remove gravel and filter fabric at completion of construction Costs Average annual cost for installation and maintenance may vary from $1,200 to $4,800 each, averaging $2,400 per entrance. Costs will increase with addition of washing rack, and sediment trap. With wash rack, costs range from $1,200 -$6,000 each, averaging $3,600 per entrance. References Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 3 of 6 Stabilized Construction Entrance/Exit TC-1 National Management Measures to Control Nonpoint Source Pollution from Urban Areas, USEPA Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Non point Pollution in Coastal Waters, Work Group Working Paper, USEPA, April 1992. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation and Recreation, Division of Soil and Water Conservation, 1991. Guidance Specifying Management Measures for Nonpoint Pollution in Coastal Waters, EPA 840-B-9-002, USEPA, Office of Water, Washington, DC, 1993. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. November 2009 California Stormwater BMP Handbook Co nstruction www .casqa.org 4 of 6 Stabilized Construction Entrance/Exit TC-1 >-<( s: 0 <( ~I 0 w > <( o_ (__') ~I f- l/] X w Match Existing Grode November 2009 than 3'' Original grade --~~;,,.ia~~Q&~~~~.,_____=--- 12 " Min, unless otherwise specified by a soils engineer SECTION B-B NTS ---B 50' Min or four times the circumference of the largest construction vehicle tire, whichever is greater PLAN NTS California Stormwater BMP Handbook Construction www.casqa.org B Width as required to occomodote on ticipoted traffic 5 of 6 Stabilized Construction Entrance/Exit NOTE: Crushed aggregate greater than .3" but smaller than 6". fabric Original grade ---L.~~~~elQ'&~iliic~,___L-~ soils engineer SECTION B-B NTS Crushed aggregate greater than 3'' but smaller th::in 6". Corrugated steel panels Original ,-f"7/,-,.,;:,,,.,r<?rt~,f-iiciroicivr=,§,'mc:,;,;--'mr~,f'-is'717'1=r-=trr. grade 12" Min, unless otherwise specified by a soils engineer SECTION A-A NOT TO SCALE Filter fabric Construct sediment barrier and channelize runoff to sediment trapping device Sediment trapping device >-<{ 3: 0 <{ 0 0::: 0 w > <{ Q_ Cl z f--(11 X w ~ Match Existing Grode November 2009 Corrugated steel panels A 8 4' m in so· min or four times the circumference of the largest construction vehicle tire, whichever is greater PLAN NTS California Stormwater BMP Handbook Construction www.casqa.org 8 TC-1 6 of 6 Wind Erosion Control - Description and Purpose Wind erosion or dust control consists of applying water or other chemical dust suppressants as necessary to prevent or alleviate dust nuisance generated by construction activities. Covering small stockpiles or areas is an alternative to applying water or other dust palliatives. California's Mediterranean climate, with a short "wet" season and a typically long, hot "dry" season, allows the soils to thoroughly dry out. During the dry season, construction activities are at their peak, and disturbed and exposed areas are increasingly subject to wind erosion, sediment tracking and dust generated by construction equipment. Site conditions and climate can make dust control more of an erosion problem than water based erosion. Additionally, many local agencies, including Air Quality Management Districts, require dust control and/or dust control permits in order to comply with local nuisance laws, opacity laws (visibility impairment) and the requirements of the Clean Air Act. Wind erosion control is required to be implemented at all construction sites greater than 1 acre by the General Permit. Suitable Applications Most BMPs that provide protection against water-based erosion will also protect against wind-based erosion and dust control requirements required by other agencies will generally meet wind erosion control requirements for water quality protection. Wind erosion control BMPs are suitable during the following construction activities: November 2009 California Stormwater BMP Handbook Construction www.casqa.org WE-1 Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 0 Primary Category ~ Secondary Category Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-5 Soil Binders ~ 0 CAUFORNIA STOIIMW/\TI!R I " 1 of 5 Wind Erosion Control WE-1 ■ Construction vehicle traffic on unpaved roads ■ Drilling and blasting activities ■ Soils and debris storage piles ■ Batch drop from front-end loaders ■ Areas with unstabilized soil ■ Final grading/site stabilization Limitations ■ Watering prevents dust only for a short period (generally less than a few hours) and should be applied daily (or more often) to be effective. ■ Over watering may cause erosion and track-out. ■ Oil or oil-treated subgrade should not be used for dust control because the oil may migrate into drainageways and/ or seep into the soil. ■ Chemical dust suppression agents may have potential environmental impacts. Selected chemical dust control agents should be environmentally benign. ■ Effectiveness of controls depends on soil, temperature, humidity, wind velocity and traffic. ■ Chemical dust suppression agents should not be used within 100 feet of wetlands or water bodies. ■ Chemically treated subgrades may make the soil water repellant, interfering with long-term infiltration and the vegetation/re-vegetation of the site. Some chemical dust suppressants may be subject to freezing and may contain solvents and should be handled properly. ■ In compacted areas, watering and other liquid dust control measures may wash sediment or other constituents into the drainage system. ■ If the soil surface has minimal natural moisture, the affected area may need to be pre-wetted so that chemical dust control agents can uniformly penetrate the soil surface. Implementation Dust Control Practices Dust control BMPs generally stabilize exposed surfaces and minimize activities that suspend or track dust particles. The following table presents dust control practices that can be applied to varying site conditions that could potentially cause dust. For heavily traveled and disturbed areas, wet suppression (watering), chemical dust suppression, gravel asphalt surfacing, temporary gravel construction entrances, equipment wash-out areas, and haul truck covers can be employed as dust control applications. Permanent or temporary vegetation and mulching can be employed for areas of occasional or no construction traffic. Preventive measures include minimizing surface areas to be disturbed, limiting onsite vehicle traffic to 15 mph or less, and controlling the number and activity of vehicles on a site at any given time. November 2009 Ca lifornia Stormwater BMP Handbook Construction www .casqa .org 2 of 5 Wind Erosion Control WE-1 Chemical dust suppressants include: mulch and fiber based dust palliatives (e.g. paper mulch with gypsum binder), salts and brines (e.g. calcium chloride, magnesium chloride), non- petroleum based organics (e.g. vegetable oil, lignosulfonate), petroleum based organics (e.g. asphalt emulsion, dust oils, petroleum resins), synthetic polymers (e.g. polyvinyl acetate, vinyls, acrylic), clay additives (e.g. bentonite, montimorillonite) and electrochemical products (e.g. enzymes, ionic products). Dust Control Practices Site Wet Chemical Gravel Temporary Gravel Minimize Condition Permanent Mulching Suppression Dust Construction Synthetic E.uentof Vegetation or Entrances/Equipment Covers Disturbed (Watering) Suppression Asphalt Wash Down Area Disturbed Areas not X X X X X X Subject to Traffic Disturbed Areas X X X X X Subject to Traffic Material X X X X X Stockpiles Demolition X X X Clearing/ X X X E.'\:cavation Truck Traffic on X X X X X Unpaved Roads Tracking X X Additional preventive measures include: ■ Schedule construction activities to minimize exposed area (see EC-1, Scheduling). ■ Quickly treat exposed soils using water, mulching, chemical dust suppressants, or stone/ gravel layering. ■ Identify and stabilize key access points prior to commencement of construction. ■ Minimize the impact of dust by anticipating the direction of prevailing winds. ■ Restrict construction traffic to stabilized roadways within the project site, as practicable. ■ Water should be applied by means of pressure-type distributors or pipelines equipped with a spray system or hoses and nozzles that will ensure even distribution. ■ All distribution equipment should be equipped with a positive means of shutoff. ■ Unless water is applied by means of pipelines, at least one mobile unit should be available at all times to apply water or dust palliative to the project. ■ If reclaimed waste water is used, the sources and discharge must meet California Department of Health Services water reclamation criteria and the Regional Water Quality November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 3 of 5 Wind Erosion Control WE-1 Control Board (RWQCB) requirements. Non-potable water should not be conveyed in tanks or drain pipes that will be used to convey potable water and there should be no connection between potable and non-potable supplies. Non-potable tanks, pipes, and other conveyances should be marked, "NON-POTABLE WATER-DO NOT DRINK." ■ Pave or chemically stabilize access points where unpaved traffic surfaces adjoin paved roads. ■ Provide covers for haul trucks transporting materials that contribute to dust. ■ Provide for rapid clean up of sediments deposited on paved roads. Furnish stabilized construction road entrances and wheel wash areas. ■ Stabilize inactive areas of construction sites using temporary vegetation or chemical stabilization methods. For chemical stabilization, there are many products available for chemically stabilizing gravel roadways and stockpiles. If chemical stabilization is used, the chemicals should not create any adverse effects on stormwater, plant life, or groundwater and should meet all applicable regulatory requirements. Costs Installation costs for water and chemical dust suppression vary based on the method used and the length of effectiveness. Annual costs may be high since some of these measures are effective for only a few hours to a few days. Inspection and Maintenance ■ Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. ■ BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events. ■ Check areas protected to ensure coverage. ■ Most water-based dust control measures require frequent application, often daily or even multiple times per day. Obtain vendor or independent information on longevity of chemical dust suppressants. References Best Management Practices and Erosion Control Manual for Construction Sites, Flood Control District of Maricopa County, Arizona, September 1992. California Air Pollution Control Laws, California Air Resources Board, updated annually. Construction Manual, Chapter 4, Section 10, "Dust Control"; Section 17, "Watering"; and Section 18, "Dust Palliative", California Department of Transportation (Caltrans), July 2001. November 2009 California Stormwater BMP Handbook Construction www.casqa.org 4 of 5 Wind Erosion Control WE-1 Prospects for Attaining the State Ambient Air Quality Standards for Suspended Particulate Matter (PM10), Visibility Reducing Particles, Sulfates, Lead, and Hydrogen Sulfide, California Air Resources Board, April 1991. Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003. November 2009 Ca lifornia Stormwater BMP Handbook Construction www.casqa.org 5 of 5 APPENDIX U -BIOASSESSMENT REQUIREMENTS BIOASSESSMENT MONITORING IS NOT REQUIRED FOR RISK 2 LEVEL SITES. APPENDIX V -RAINFALL EVEN ACTION PLAN (REAP) Date: 20 WDID Number: -------- APPENDIX 3: REAP TEMPLATES Rain Event Action Plan (REAP) Grading and Land Development Phase Preparation of land for utility installation and vertical building including clearing and grubbing, demolition, blasting or rock crushing, if necessary, and soil excavation and mass grading. This form is to be reviewed and completed by th e qualified SWPPP vractitioner within 48 hours orior to a rain event durin[.; the Gradinz and Land Develooment Phase. Site Information: Site Name, City and Zip Code Ri sk Level I □ Risk Level 2 □ Risk Level 3 Site Storm Water Manager Information: Name, Company and Emergency Phone Number (24/7) Erosion and Sediment Control Provider -Labor Force Contracted for the Site: Name, Company and Emergency Phone Number (24/7) Storm Water Sampling Agent Information: Name, Company and Emergency Phone Number (24/7) Activities Associated with Land Surface Development Ch eck ALL the boxes below that apply to your site. 0 Demolition 0 Vegetation Removal 0 Vegetati on Salvage-Harvest 0 Rough Grade 0 Finish Grade 0 Blasting 0 Soi l Arnendment(s): 0 Over Excavation ft) 0 Soils Testing 0 Rock Crushing 0 Erosion and Sediment Control 0 Surveying 0 Equip. Maintenance/Fueling 0 Material Delivery and Storage 0 Other: Trades Active on Site During Land Surface Development Check ALL the boxes below that apply to your site. 0 Demolition 0 Grading Contractor 0 Erosion and Sediment Control □ Stom1 Drain Improvement □ Water, Sewer, Electric Utilities □ Surveyor -Soils Technician 0 Street Improvements 0 Rock Products 0 Sanitary Station Provider 0 Material Delivery 0 Equipment Fueling/Maintenance 0 Laborers 0 Other: 0 Other: 0 Other: Trade Contractor Information Provided 0 Educational Material Handout 0 Tailgate Meetings 0 Training Workshop 0 Contractual Language 0 Fines and Penalties 0 Signage 0 Other: 0 Other: 0 Other: 1 Rain Event Action Plan (REAP) Grading and Land Development Phase Predicted Rain Event Triggered Actions Below is a list of suggested actions for this project phase. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active soil disturbance, and areas of active work to ensure the proper implementation ofBMPs. Project-wide BMPs should be checked and cross- referenced to the BMP progress map. Trade or Activity Suggested action(s) to review before rain event 0 Information & Scheduling 0 lnfo1m trade supervisors of predicted rain 0 Check scheduled activities and rescheduled as needed 0 Alert erosion/sediment control provider 0 Alert sample coll ection contractor (if applicable) 0 Schedule staff for extended rain inspections (including weekends & holidays) 0 Check Erosion and Sediment Control (ESC) material stock 0 Review BMP map 0 Other: 0 0 0 Material storage areas 0 Material under cover or in sheds (ex: treated woods and metals) 0 Perimeter control around stockpiles 0 Other: 0 0 p Waste management areas 0 Dumpsters closed 0 Drain holes plugged 0 Recycling bins covered 0 Sanitary stations bermed and protected from tipping 0 Other: 0 0 0 Trade operations 0 Exterior operations shut down for event (ex: no concrete pours or paving) 0 Do not apply soi l treatments (ex: fertilizer) within 24 hours of event 0 Materials and equipment (ex: tools) properly stored and covered 0 Waste and debris disposed in covered dumpsters or removed from site D Trenches and excavations protected 0 Perimeter controls around disturbed areas 0 Cover and berm fueling and repair areas 0 Other: 0 0 p Site ESC BMPs 0 Adequate capacity in sediment basins and traps 0 Site perimeter controls in place □ Catch basin and drop inlet protection in place 0 Deploy temporary erosion control on inactive areas 0 Deploy temporary perimeter control around disturbed areas or stockpiles 0 Sweep roads; stabilize site ingress and egress points 0 Other: 0 0 p Concrete rinse out area 0 Adequate capacity for rain □ Cover wash-out bins 0 Other: 0 0 2 p Spill and drips □ Clean up all incident spills and drips, including paint, stucco, fuel, and oil □ Empty drip pans □ Other: □ □ □ Other / Discussion / □ Diagrams □ □ □ □ □ □ □ □ □ □ □ □ 1 certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete . 1 am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Date: Site Storm Water Manager Signature (Use ink please) 3 Date: 20 WDID Number: -------- Rain Event Action Plan (REAP) Streets and Utilities Phase Finish grading activities and installation of electrical, gas, water, sewer, stormwater control, and communication systems; Installation of roadways, curbs, gutters and other site design features for stormwater control. This form to be reviewed and com1Jleted bv the qualified SWPPP vractilioner within 48 hours 1Jrior to a rain event durinz the Streets and Utilities Phase. Site Information: Site Name, City and Zip Code Risk Level I o Risk Level 2 o Risk Level 3 Site Storm Water Manager Information: Name, Company and Emergency Phone Number (24/7) Erosion and Sediment Control Provider -Labor Force Contracted for the Site: Name, Company and Emergency Phone Number (24/7) Storm Water Sampling Agent Information: Name, Company and Emergency Phone Number (24/7) Activities Associated with Streets and Utilities Development Check All the boxes below that apply to your site. D Rough Grade D Utility Install : water-sewer-gas D Paving Operations D Finish Grade D Stom1 Drain Installation D Material Delivery & Storage D Soil Amendment(s): D Masonry D Erosion and Sediment Control D Equip. Maintenance/Fueling D Curb and Gutter/Concrete Pour D Other: Trades Active on Site During Streets and Utilities Development Check ALL the boxes below that apply to your site. D Storm Drain Improvement D Grading Contractor D Surveyor-Soi l Technician D Street improvements D Water Pipe Installation D Sanitary Station Provider D Material Delive1y D Sewer Pipe Installation D Laborers D Trenching D Gas Pipe In stallation D Electrical D Concrete Pouring D Electrical Installation D Carpentry D Foundation D Communication Installation D Plumbing D Other: D Erosion and Sediment Control D Masonry D Other: D Other: D Other: Trade Contractor Information Provided D Educational Material Handout D Tailgate Meetings D Training Workshop D Contractual Language D Fines and Penalties D Signage D Other: D Other: D Other: 4 Rain Event Action Plan (REAP) Streets and Utilities Phase Predicted Rain Event Triggered Actions Below is a list of suggested actions for this project phase. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active so il disturbance, and areas of active work to ensure the proper implementation of BMPs. Project-wide BMPs should be checked and cross- referenced to the BMP progress map. Trade or Activity Suggested action(s) to review before rain event 0 Information & Scheduling 0 Inform trade supervisors of predicted rain 0 Check scheduled activities and rescheduled as needed 0 Alert erosion/sediment control provider 0 Alert sample collection contractor (if applicable) 0 Schedule staff for extended rain inspections (including weekends & holidays) 0 Check Erosion and Sediment Control (ESC) material stock 0 Review BMP map 0 Other: 0 0 0 Material storage areas 0 Material under cover or in sheds (ex: treated woods and metals) 0 Perimeter control around stockpiles 0 Other: 0 0 0 Waste management areas 0 Dumpsters closed 0 Drain holes plugged 0 Recycling bins covered 0 Sanitary stations bermed and protected from tipping 0 Other: 0 0 p Trade operations 0 Exterior operations shut down for event (ex: no concrete pours or paving) 0 Do not apply soil treatments (ex: fertilizer) within 24 hours of event 0 Materials and equipment ( ex: tools) properly stored and covered 0 Waste and debris disposed in covered dumpsters or removed from site 0 Trenches and excavations protected 0 Perimeter controls around disturbed areas 0 Cover and berm fueling and repair areas 0 Other: □ 0 0 Site ESC BMPs 0 Adequate capacity in sediment basins and traps 0 Site perimeter controls in place 0 Catch basin and drop inlet protection in place 0 Deploy temporary erosion control on inactive areas 0 Deploy temporary perimeter control around disturbed areas or stockpiles 0 Sweep roads; stabilize site ingress and egress points 0 Other: 0 0 0 Concrete rinse out area 0 Adequate capacity for rain 0 Cover wash-out bins 0 Other: 0 0 5 □ Spill and drips □ Clean up all incident spi lls and drips, including paint, stucco, fuel, and oil □ Empty drip pans □ Other: □ □ ~ Other I Discussion I □ Diagrams □ □ □ □ □ □ □ □ □ □ □ □ I certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility affine and imprisonment for knowing violations. Date: Site Storm Water Manager Signature (Use ink please) 6 Date: 20 WDID Number: -------- Rain Event Action Plan (REAP) Vertical Construction Phase Build out of structures from foundations to roofing, including rough landscaping. This form to be reviewed and completed by the qualified SWPPP practitioner within 48 hours prior to a rain event during the Vertical Construction Phase. Site Information: Site Name, City and Zip Code Risk Level 1 □ Risk Level 2 □ Risk Level 3 Site Storm Water Manager Information: Name, Company and Emergency Phone Number (24/7) Erosion and Sediment Control Provider -Labor Force Contracted for the Site: Name, Company and Emergency Phone Number (24/7) Storm Water Sampling Agent Information: Name, Company and Emergency Phone Number (24/7) Activities Associated with Vertical Construction Check ALL the boxes below that apply to your site, and others that are active at your site. D Framing D Carpentry D Concrete/Forms/Foundation D Masonry D Electrical D Painting D Drywall/Interior Walls D Plumbing D Stucco D Equip. Maintenance/Fueling D HVAC D Tile D Exterior Siding D Insulation D Landscaping & Irrigation D Flooring D Material Delivery & Storage D Equip. Repair and Fueling D Roofing D Soil Amendment(s): D Other: Trades Active on Site During Vertical Construction Check ALL the boxes below that apply to your site, and others that are active at your site. D Grading Contractor D Utilities, e.g., Sewer, Electric D Erosion/ Sediment Control D Tile Work-Flooring D Foundation D Surveyors D Drywall D Roofers D Sanitary Station Provider D Electricians D Stucco D Laborers □ HY AC installers □ Masons D Painters D Exterior Siding D Landscapers D Carpenters D Insulation D Riggers D Plumbers D Fireproofing D Utility Line Testers D Pest Control: termite prevent. D Steel Systems D Others: D Other: Trades that are storing materials and/or waste outside or conducting activities outside should be listed. Trade Contractor Information Provided D Educational Material Handout D Tailgate Meetings D Training Workshop D Contractual Language D Fines and Penalties D Signage D Other: D Other: D Other: 7 Rain Event Action Plan (REAP) Vertical Construction Phase Predicted Rain Event Triggered Actions Below is a list of suggested actions for this project phase. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active soil disturbance, and areas of active work to ensure the proper implementation of BMPs. Project-wide BMPs should be checked and cross- referenced to the BMP progress map. Trade or Activity Suggested action(s) to review before rain event b Infom1ation & Scheduling D Inform trade supervisors of predicted rain D Check scheduled activities and rescheduled as needed D Alert erosion/sediment control provider D Alert sample collection contractor (if applicable) D Schedule staff for extended rain inspections (including weekends & holidays) D Check Erosion and Sediment Control (ESC) material stock D Review BMP map D Other: D D b Material storage areas D Material under cover or in sheds (ex: treated woods and metals) D Perimeter control around stockpiles D Other: D D p Waste management areas D Dumpsters closed D Drain holes plugged D Recycling bins covered D Sanitary stations bermed and protected from tipping D Other: D D p Trade operations D Exterior operations shut down for event (ex: no concrete pours or paving) D Do not apply soil treatments (ex: ferti lizer) within 24 hours of event D Materials and equipment (ex: tools) properly stored and covered D Waste and debris disposed in covered dumpsters or removed from site □ Trenches and excavations protected D Perimeter controls around disturbed areas D Cover and bem1 fueling and repair areas D Other: D D b Site ESC BMPs D Adequate capacity in sediment basins and traps D Site perimeter controls in place D Catch basin and drop inlet protection in place D Deploy temporary erosion control on inactive areas D Deploy temporary perimeter control around disturbed areas or stockpiles D Sweep roads; stabilize site in gress and egress points D Other: D D b Concrete rinse out area D Adequate capacity for rain D Cover wash-out bins D Other: D □ 8 D Spill and drips D Clean up all incident spills and drips, including paint, stucco, fuel, and oil D Empty drip pans D Other: D D D Other / Discuss ion / D Diagrams D D D D D D D D D D D D I certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting fal se information, including the possibility of fine and imprisonment for knowing violations. Date: Site Storm Water Manager Signature (Use ink please) 9 Date: 20 WDID Number: -------- Rain Event Action Plan (REAP) Post -Construction Phase Final landscaping and site stabilization, material removal, and post construction obligation installation such as storm drain inlet stenciling. This form to be reviewed and completed by the qualified SWPPP practitioner within 48 hours prior to a rain event durinf! the Post-Construction Phase. Site Information: Site Name, Citv and Zio Code Ri sk Level 1 □ Risk Level 2 □ Risk Level 3 Site Storm Water Manager Information: Name, Company and Emergency Phone Number (24/7) Erosion and Sediment Control Provider -Labor Force Contracted for the Site: Name, Company and Emergency Phone Number (24/7) Storm Water Sampling Agent Information: Name, Company and Emergency Phone Number (24/7) Activities Associated with Site Post Construction Check ALL the boxes below that apply to your site. □ Stabilization □ Vegetation Establishment □ E&S Control BMP Removal □ Finish Grade □ Storage Yard/ Material Removal □ Landscape Installati on □ Painting and Touch-Up □ Irrigation System Testing □ Other: Installation of Post-Construction BMPs: □ Drainage Inlet Stencils □ Inlet Filtration □ Perm. Water Quality Ponds □ Other: □ Other: □ Other: Trades Active on During Site Post Construction Check ALL the boxes below that apply to your site. □ Material Delivery □ Landscape Installation □ Erosion and Sediment Control □ Irrigation System Installation □ BMP Installation □ Sanitary Station Provider □ Pool Installation □ Water Feature Install ation □ Laborers □ Painting □ Equipment Fueling □ Other: Home Owner and HOA Information Provided □ Educational Material Handout □ Door Hangers □ Educational Workshop □ Educational Material Mailings □ Fines and Penalties □ Signage □ Community Postings □ Other: □ Other: 10 Rain Event Action Plan (REAP) Post -Construction Phase Predicted Rain Event Triggered Actions Below is a list of suggested actions for this project phase. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active soil disturbance, and areas of active work to ensure the proper implementation of BMPs. Project-wide BMPs should be checked and cross- referenced to the BMP progress map. Trade or Activity Suggested action(s) to review before rain event □ Information & Scheduling □ Inform trade supervisors of predicted rain □ Check scheduled activities and rescheduled as needed □ Alert erosion/sediment control provider □ Alert sample collection contractor (if applicable) □ Schedule staff for extended rain inspections (including weekends & holidays) □ Check Erosion and Sediment Control (ESC) material stock □ Review BMP map □ Other: □ □ 0 Material storage areas □ Material under cover or in sheds (ex: treated woods and metals) □ Perimeter control around stockpiles □ Other: □ □ □ Waste management areas □ Dumpsters closed □ Drain holes plugged □ Recycling bins covered □ Sanitary stations bem1ed and protected from tipping □ Other: □ □ t.l Trade operations □ Exterior operations shut down for event (ex: no concrete pours or paving) □ Do not apply soil treatments ( ex: fertilizer) within 24 hours of event □ Materials and equipment (ex: tools) properly stored and covered □ Waste and debris disposed in covered dumpsters or removed from site □ Trenches and excavations protected □ Perimeter controls around disturbed areas □ Cover and berm fueling and repair areas □ Other: □ □ p Site ESC BMPs □ Adequate capacity in sediment basins and traps □ Site perimeter controls in place □ Catch basin and drop inlet protection in place □ Deploy temporary erosion control on inactive areas □ Deploy temporary perimeter control around disturbed areas or stockpiles □ Sweep roads; stabilize site ingress and egress points □ Other: □ □ 0 Concrete rinse out area □ Adequate capacity for rain □ Cover wash-out bins □ Other: □ □ 11 □ Spill and drips □ Clean up all incident spills and drips, including paint, stucco, fuel, and oil □ Empty drip pans □ Other: □ □ □ Other I Discussion I □ Diagrams □ □ □ □ □ □ □ □ □ □ □ □ 1 certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete. 1 am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Date: Site Stom1 Water Manager Signature (Use ink please) 12 Date: 20 WDID Number: -------- Rain Event Action Plan (REAP) Inactive Construction Sites Halted, or postponed construction activities. This form to be reviewed and completed by the qualified SWPPP practitioner within 48 hours prior to a rain event during the time period a site is designated inactive. Site Information: Site Name, City and Zip Code Risk Levell o Risk Level 2 o Risk Level 3 Site Storm Water Manager Information: Name, Company and Emergency Phone Number (24/7) Erosion and Sediment Control Provider -Labor Force Contracted for the Site: Name, Company and Emergency Phone Number (24/7) Storm Water Sampling Agent Information: Name, Company and Emergency Phone Number (24/7) Trades Active on Site During Inactive Construction Check ALL the boxes below that apply to your site. □ E&S Control Device Installation □ Routine Site inspections □ Trash Removal □ E&S Control Device Maintenance □ Street Sweeping □ Other: □ Other: □ Other: □ Other: Trade Contractor Information Provided □ Educational Material Handout □ Tai lgate Meetings □ Training Workshop □ Contractual Language □ Fines and Penalti es □ Signage □ Other: □ Other: □ Other: 13 Rain Event Action Plan (REAP) Inactive Construction Sites Predicted Rain Event Triggered Actions Below is a list of suggested actions for thi s project phase. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active soil disturbance, and areas of active work to ensure the proper implementation of BMPs. Project-wide BMPs should be checked and cross- referenced to the BMP progress map. Trade or Activity Suggested action(s) to review before rain event 0 Information & Scheduling □ Inform trade supervisors of predicted rain □ Check scheduled activities and rescheduled as needed □ Alert erosion/sediment control provider □ Alert sample collection contractor (if applicable) □ Schedule staff for extended rain inspections (including weekends & holidays) □ Check Erosion and Sediment Control (ESC) material stock □ Review BMP map □ Other: □ □ □ Material storage areas □ Material under cover or in sheds (ex: treated woods and metals) □ Perimeter control around stockpiles □ Other: □ □ □ Waste management areas □ Dumpsters closed □ Drain holes plugged □ Recycling bins covered □ Sanitary stations bermed and protected from tipping □ Other: □ □ □ Trade operations □ Exterior operations shut down for event (ex: no concrete pours or paving) □ Do not apply soil treatments ( ex: fertilizer) within 24 hours of event □ Materials and equipment (ex: tools) properly stored and covered □ Waste and debris disposed in covered dumpsters or removed from site □ Trenches and excavations protected □ Perimeter controls around disturbed areas □ Cover and berm fueling and repair areas □ Other: □ □ □ Site ESC BMPs □ Adequate capacity in sediment basins and traps □ Site perimeter controls in place □ Catch basin and drop inlet protection in place □ Deploy temporary erosion control on inactive areas □ Deploy temporary perimeter control around disturbed areas or stockpiles □ Sweep roads; stabilize site ingress and egress points □ Other: □ □ □ Other I Discussion / □ Diagrams □ □ 14 □ □ □ □ □ □ □ □ □ □ I ce1tify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Date: Site Stom1 Water Manager Signature (Use ink please) 15 APPENDIX W -ACTIVE TREATMENT SYSTEM (ATS) PLAN AND REQUIREMENTS ATS WILL NOT BE UTILIZED FOR THIS PROJECT. • A TS Plan including: 1. ATS Operation and Maintenance Manual for All Equi pment. 2. ATS Monitoring, Sampling & Reporting Plan, including Quality Assurance/Quality Control (QA/QC). 3. ATS Health and Safety Plan. 4. ATS Spill Prevention Plan. • Attachment F, SWRCB Order 2009-009-DWQ • ASTM D2035-08 (2003) For Determination of Appropriate Polymer Dosage. APPENDIX X -SAMPLING PORTOCOL FOR COMPLIANCE WITH ORDER 2009-009-DWQ This Section Contains: • Sample Chain of Custody Form • Manufactures' specifi cations for maintenance and calibrations of turbidity and pH meters to be provided by the County • T urbidity Test Methods per Standard Method 2130 and USEPA Method 180.1 • pH Test Methods per Standard Method I 50.2 CHAIN OF CUSTODY RECORD PAGE OF Company Phone Analysis Requested Test Instructions & Comments Project Manager Fax Project Name Project# Site Name / Address Sample ID Lab ID Date Time Matrix Container Pres. Number/Size 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Receipt -To Be Filled by Laboratory Relinquished Relinquished Relinquished by: by: by: Total Number of Containers I Properly Cooled ( Y / N /NA ) Signature: Signature: Signature: Custody Seals ( Y / N /NA) Samples Intact (YIN/ NA) Printed Name: Printed Name: Printed Name: Received in Good Condition ( Y / N ) Samples Accepted ( Y / N ) Date: Time: Date: Time: Date: Time: Turn Around Time Received bv: Received by: Received by: Normal 24 Hours Signature: Signature: Signature: Rush 48 Hours Printed Name: Printed Name: Printed Name: Same Day 72 Hours Date: Time: Date: Time: Date: Time: Standard Methods for the Examination of Water and Wastewater 2130 TURBIDITY*#(1) 2130 A. Introduction 1. Sources and Significance Clarity of water is important in producing products destined for human consumption and in many manufacturing operations. Beverage producers, food processors, and potable water treatment plants drawing from a surface water source commonly rely on fluid-particle separation processes such as sedimentation and filtration to increase clarity and insure an acceptable product. The clarity of a natural body of water is an important determinant of its condition and productivity. Turbidity in water is caused by suspended and colloidal matter such as clay, silt, finely divided organic and inorganic matter, and plankton and other microscopic organisms. Turbidity is an expression of the optical property that causes light to be scattered and absorbed rather than transmitted with no change in direction or flux level through the sample. Correlation of turbidity with the weight or particle number concentration of suspended matter is difficult because the size, shape, and refractive index of the particles affect the light-scattering properties of the suspension. When present in significant concentrations, particles consisting of light-absorbing materials such as activated carbon cause a negative interference. In low concentrations these particles tend to have a positive influence because they contribute to turbidity. The presence of dissolved, color-causing substances that absorb light may cause a negative interference. Some commercial instruments may have the capability of either correcting for a slight color interference or optically blanking out the color effect. 2. Selection of Method Historically, the standard method for determination of turbidity has been based on the Jackson candle turbidimeter; however, the lowest turbidity value that can be measured directly on this device is 25 Jackson Turbidity Units (JTU). Because turbidities of water treated by conventional fluid-particle separation processes usually fall within the range of O to 1 unit, indirect secondary methods were developed to estimate turbidity. Electronic nephelometers are the preferred instruments for turbidity measurement. Most commercial turbidimeters designed for measuring low turbidities give comparatively good indications of the intensity of light scattered in one particular direction, predominantly at right angles to the incident light. Turbidimeters with scattered-light detectors located at 90° to the incident beam are called nephelometers. Nephelometers are relatively unaffected by small differences in design parameters and therefore are specified as the standard instrument for measurement of low turbidities. Instruments of different make and model may vary in response. t#(2) However, interinstrument variation may be effectively negligible if good © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater measurement techniques are used and the characteristics of the particles in the measured suspensions are similar. Poor measurement technique can have a greater effect on measurement error than small differences in instrument design. Turbidimeters of nonstandard design, such as forward-scattering devices, may be more sensitive than nephelometers to the presence of larger particles. While it may not be appropriate to compare their output with that of instruments of standard design, they still may be useful for process monitoring. An additional cause of discrepancies in turbidity analysis is the use of suspensions of different types of particulate matter for instrument calibration. Like water samples, prepared suspensions have different optical properties depending on the particle size distributions, shapes, and refractive indices. A standard reference suspension having reproducible light-scattering properties is specified for nephelometer calibration. Its precision, sensitivity, and applicability over a wide turbidity range make the nephelometric method preferable to visual methods. Report nephelometric measurement results as nephelometric turbidity units (NTU). 3. Storage of Sample Determine turbidity as soon as possible after the sample is taken. Gently agitate all samples before examination to ensure a representative measurement. Sample preservation is not practical; begin analysis promptly. Refrigerate or cool to 4°C, to minimize microbiological decomposition of solids, if storage is required. For best results, measure turbidity immediately without altering the original sample conditions such as temperature or pH. 2130 B. Nephelometric Method 1. General Discussion a. Principle: This method is based on a comparison of the intensity of light scattered by the sample under defined conditions with the intensity of light scattered by a standard reference suspension under the same conditions. The higher the intensity of scattered light, the higher the turbidity. Formazin polymer is used as the primary standard reference suspension. The turbidity of a specified concentration of formazin suspension is defined as 4000 NTU. b. Interference: Turbidity can be determined for any water sample that is free of debris and rapidly settling coarse sediment. Dirty glassware and the presence of air bubbles give false results. "True color," i.e., water color due to dissolved substances that absorb light, causes measured turbidities to be low. This effect usually is not significant in treated water. 2. Apparatus a. Laboratory or process nephelometer consisting of a light source for illuminating the sample and one or more photoelectric detectors with a readout device to indicate intensity of light scattered at 90° to the path of incident light. Use an instrument designed to minimize stray light © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater reaching the detector in the absence of turbidity and to be free from significant drift after a short warmup period. The sensitivity of the instrument should permit detecting turbidity differences of 0.02 NTU or less in the lowest range in waters having a turbidity ofless than 1 NTU. Several ranges may be necessary to obtain both adequate coverage and sufficient sensitivity for low turbidities. Differences in instrument design will cause differences in measured values for turbidity even though the same suspension is used for calibration. To minimize such differences, observe the following design criteria: 1) Light source-Tungsten-filament lamp operated at a color temperature between 2200 and 3000°K. 2) Distance traversed by incident light and scattered light within the sample tube-Total not to exceed 10 cm. 3) Angle of light acceptance by detector-Centered at 90° to the incident light path and not to exceed ±30° from 90°. The detector and filter system, if used, shall have a spectral peak response between 400 and 600 nm. b. Sample cells: Use sample cells or tubes of clear, colorless glass or plastic. Keep cells scrupulously clean, both inside and out, and discard if scratched or etched. Never handle them where the instrument's light beam will strike them. Use tubes with sufficient extra length, or with a protective case, so that they may be handled properly. Fill cells with samples and standards that have been agitated thoroughly and allow sufficient time for bubbles to escape. Clean sample cells by thorough washing with laboratory soap inside and out followed by multiple rinses with distilled or deionized water; let cells air-dry. Handle sample cells only by the top to avoid dirt and fingerprints within the light path. Cells may be coated on the outside with a thin layer of silicone oil to mask minor imperfections and scratches that may contribute to stray light. Use silicone oil with the same refractive index as glass. A void excess oil because it may attract dirt and contaminate the sample compartment of the instrument. Using a soft, lint-free cloth, spread the oil uniformly and wipe off excess. The cell should appear to be nearly dry with little or no visible oil. Because small differences between sample cells significantly impact measurement, use either matched pairs of cells or the same cell for both standardization and sample measurement. 3. Reagents a. Dilution water: High-purity water will cause some light scattering, which is detected by nephelometers as turbidity. To obtain low-turbidity water for dilutions, nominal value 0.02 NTU, pass laboratory reagent-grade water through a filter with pore size sufficiently small to remove essentially all particles larger than 0.1 µm;*#(3) the usual membrane filter used for bacteriological examinations is not satisfactory. Rinse collecting flask at least twice with filtered water and discard the next 200 mL. Some commercial bottled demineralized waters have a low turbidity. These may be used when filtration is impractical or a good grade of water is not available to filter in the laboratory. © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater Check turbidity of bottled water to make sure it is lower than the level that can be achieved in the laboratory. b. Stock primary standardformazin suspension: l) Solution I-Dissolve 1.000 g hydrazine sulfate, (NH2h·H2SO4, in distilled water and dilute to 100 mL in a volumetric flask. CAUTION: Hydrazine sulfate is a carcinogen; avoid inhalation, ingestion, and skin contact. Formazin suspensions can contain residual hydrazine sulfate. 2) Solution II-Dissolve 10.00 g hexamethylenetetramine, (CH2)6N4, in distilled water and dilute to 100 mL in a volumetric flask. 3) In a flask, mix 5.0 mL Solution I and 5.0 rnL Solution II. Let stand for 24 hat 25 ± 3°C. This results in a 4000-NTU suspension. Transfer stock suspension to an amber glass or other UV-light-blocking bottle for storage. Make dilutions from this stock suspension. The stock suspension is stable for up to 1 year when properly stored. c. Dilute turbidity suspensions: Dilute 4000 NTU primary standard suspension with high-quality dilution water. Prepare immediately before use and discard after use. d. Secondary standards: Secondary standards are standards that the manufacturer ( or an independent testing organization) has certified will give instrument calibration results equivalent (within certain limits) to the results obtained when the instrument is calibrated with the primary standard, i.e., user-prepared formazin. Various secondary standards are available including: commercial stock suspensions of 4000 NTU formazin, commercial suspensions of microspheres of styrene-divinylbenzene copolymer,t#( 4) and items supplied by instrument manufacturers, such as sealed sample cells filled with latex suspension or with metal oxide particles in a polymer gel. The U.S. Environmental Protection Agency 1 designates user-prepared formazin, commercial stock formazin suspensions, and commercial styrene-divinylbenzene suspensions as ''primary standards," and reserves the term "secondary standard" for the sealed standards mentioned above. Secondary standards made with suspensions of microspheres of styrene-divinylbenzene copolymer typically are as stable as concentrated formazin and are much more stable than diluted formazin. These suspensions can be instrument-specific; therefore, use only suspensions formulated for the type of nephelometer being used. Secondary standards provided by the instrument manufacturer (sometimes called "permanent" standards) may be necessary to standardize some instruments before each reading and in other instruments only as a calibration check to determine when calibration with the primary standard is necessary. All secondary standards, even so-called ''permanent'' standards, change with time. Replace them when their age exceeds the shelf life. Deterioration can be detected by measuring the turbidity of the standard after calibrating the instrument with a fresh formazin or microsphere suspension. If there is any doubt about the integrity or turbidity value of any secondary standard, check instrument calibration first with another secondary standard and then, if necessary, with © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater user-prepared formazin. Most secondary standards have been carefully prepared by their manufacturer and should, if properly used, give good agreement with formazin. Prepare formazin primary standard only as a last resort. Proper application of secondary standards is specific for each make and model of nephelometer. Not all secondary standards have to be discarded when comparison with a primary standard shows that their turbidity value has changed. In some cases, the secondary standard should be simply relabeled with the new turbidity value. Always follow the manufacturer's directions. 4. Procedure a. General measurement techniques: Proper measurement techniques are important in minimizing the effects of instrument variables as well as stray light and air bubbles. Regardless of the instrument used, the measurement will be more accurate, precise, and repeatable if close attention is paid to proper measurement techniques. Measure turbidity immediately to prevent temperature changes and particle flocculation and sedimentation from changing sample characteristics. If flocculation is apparent, break up aggregates by agitation. A void dilution whenever possible. Particles suspended in the original sample may dissolve or otherwise change characteristics when the temperature changes or when the sample is diluted. Remove air or other entrained gases in the sample before measurement. Preferably degas even if no bubbles are visible. Degas by applying a partial vacuum, adding a nonfoaming-type surfactant, using an ultrasonic bath, or applying heat. In some cases, two or more of these techniques may be combined for more effective bubble removal. For example, it may be necessary to combine addition of a surfactant with use of an ultrasonic bath for some severe conditions. Any of these techniques, if misapplied, can alter sample turbidity; use with care. If degassing cannot be applied, bubble formation will be minimized if the samples are maintained at the temperature and pressure of the water before sampling. Do not remove air bubbles by letting sample stand for a period of time because during standing, turbidity-causing particulates may settle and sample temperature may change. Both of these conditions alter sample turbidity, resulting in a nonrepresentative measurement. Condensation may occur on the outside surface of a sample cell when a cold sample is being measured in a warm, humid environment. This interferes with turbidity measurement. Remove all moisture from the outside of the sample cell before placing the cell in the instrument. If fogging recurs, let sample warm slightly by letting it stand at room temperature or by partially immersing it in a warm water bath for a short time. Make sure samples are again well mixed. b. Nephelometer calibration: Follow the manufacturer's operating instructions. Run at least one standard in each instrument range to be used. Make certain the nephelometer gives stable readings in all sensitivity ranges used. Follow techniques outlined in ,is 2b and 4a for care and handling of sample cells, degassing, and dealing with condensation. c. Measurement of turbidity: Gently agitate sample. Wait until air bubbles disappear and pour sample into cell. When possible, pour well-mixed sample into cell and immerse it in an © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater ultrasonic bath for 1 to 2 s or apply vacuum degassing, causing complete bubble release. Read turbidity directly from instrument display. d. Calibration of continuous turbidity monitors: Calibrate continuous turbidity monitors for low turbidities by determining turbidity of the water flowing out of them, using a laboratory-model nephelometer, or calibrate the instruments according to manufacturer's instructions with formazin primary standard or appropriate secondary standard. 5. Interpretation of Results Report turbidity readings as follows: Turbidity Range NTU 0-1.0 1-10 10-40 40-100 100-400 400-1000 >1000 Report to the Nearest NTU 0.05 0.1 1 5 10 50 100 When comparing water treatment efficiencies, do not estimate turbidity more closely than specified above. Uncertainties and discrepancies in turbidity measurements make it unlikely that results can be duplicated to greater precision than specified. 6. Reference 1. U.S. ENVIRONMENTAL PROTECTION AGENCY. 1993. Methods for Determination of Inorganic Substances in Environmental Samples. EPA-600/R/93/100 -Draft. Environmental Monitoring Systems Lab., Cincinnati, Ohio. 7. Bibliography HACH, C.C., R.D. VANOUS & J.M. HEER. 1985. Understanding Turbidity Measurement. Hach Co., Technical Information Ser., Booklet 11 , Loveland, Colo. KATZ, E.L. 1986. The stability of turbidity in raw water and its relationship to chlorine demand. J Amer. Water Works Assoc. 78:72. MCCOY, W.F. & B.H. OLSON. 1986. Relationship among turbidity, particle counts and bacteriological quality within water distribution lines. Water Res. 20: 1023. BUCKLrN, K.E., G.A. MCFETERS & A. AMIRTHARAJAH. 1991 . Penetration of coliform through municipal drinking water filters. Water Res. 25: 1013. © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater HERNANDEZ, E., R.A. BAKER & P.C. CRANDALL. 1991 . Model for evaluating turbidity in cloudy beverages. J. Food Sci. 56:747. HART, V.S., C.E. JOHNSON & R.D. LETTERMAN. 1992. An analysis of low-level turbidity measurements. J. Amer. Water Works Assoc., 84(12): 40. LECHEVALLIER, M.W. & W.D. NORTON. 1992. Examining relationship between particle counts and Giardia, Cryptosporidium, and turbidity. J Amer. Water Works Assoc. 84(12):54. © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of Water and Wastewater Endnotes 1 (Popup -Footnote) * APPROVED BY STANDARD METHODS COMMITTEE, 1994. 2 (Popup -Footnote) t Nephelometers that instrument manufacturers claim meet the design specifications of this method may not give the same reading for a given suspension, even when each instrument has been calibrated using the manufacturer's manual. This differential performance is especially important when measurements are made for regulatory purposes. Consult regulatory authorities when selecting a nephelometer to be used for making measurements that will be reported for regulatory purposes. 3 (Popup -Footnote) * Nuclepore Corp., 7035 Commerce Circle, Pleasanton, CA, or equivalent. 4 (Popup -Footnote) t AMCO-AEPA-1 Standard, Advanced Polymer Systems, 3696 Haven Ave., Redwood City, CA, or equivalent. © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation METHOD #: 180.1 TITLE: Approved for NPDES (Editorial Revision 1974 , 1978) Turbidity (Nephelometric) ANALYTE: Turbidity INSTRUMENTATION: Turbidimeter STORET No. 00076 1.0 Scope and Application 1.1 This method is applicable to drinking, surface, and saline waters in the range of turbidity from O to 40 nephelometric turbidity units (NTU). Higher values may be obtained with dilution of the sample. NOTE 1: NTU's are considered comparable to the previously reported Formazin Turbidity Units (FTU) and Jackson Turbidity Units QTU). 2.0 Summary of Method 2.1 The method is based upon a comparison of the intensity of light scattered by the sample under defined conditions with the intensity of light scattered by a standard reference suspension. The higher the intensity of scattered light, the higher the turbidity. Readings, in NTU's, are made in a nephelometer designed according to specifications outlined in Apparatus. A standard suspension of Formazin, prepared under closely defined conditions, is used to calibrate the instrument. 2.1.1 Formazin polymer is used as the turbidity reference suspension for water because it is more reproducible than other types of standards previously used for turbidity standards. 2.1.2 A commercially available polymer standard is also approved for use for the National Interim Primary Drinking Water Regulations. This standard is identified as AMCO-AEPA-1 available from Amco Standard International, Inc. 3.0 Sample Handling and Preservation 3.1 Preservation of the sample is not practical; analysis should begin as soon as possible. Refrigeration or icing to 4 °C, to minimize microbiological decomposition of solids, is recommended. 4.0 Interferences 4.1 The presence of floating debris and coarse sediments which settle out rapidly will give low readings. Finely divided air bubbles will affect the results in a positive manner. 4.2 The presence of true color, that is the color of water which is due to dissolved substances which absorb light, will cause turbidities to be low, although this effect is generally not significant with finished waters. 5.0 Apparatus 5.1 The turbidimeter shall consist of a nephelometer with light source for illuminating the sample and one or more photo-electric detectors with a readout device to indicate the intensity of light scattered at right angles to the path of the incident light. The turbidimeter should be so designed that little stray light reaches the detector in the absence of turbidity and should be free from significant drift after a short warm-up period. 5.2 The sensitivity of the instrument should permit detection of a turbidity difference of 0.02 unit or less in waters having turbidities less than 1 unit. The instrument should measure from 0 to 40 units turbidity. Several ranges will be necessary to obtain both adequate coverage and sufficient sensitivity for low turbidities. 5.3 The sample tubes to be used with the available instrument must be of clear, colorless glass. They should be kept scrupulously clean, both inside and out, and discarded when they become scratched or etched. They must not be handled at all where the light strikes them, but should be provided with sufficient extra length, or with a protective case, so that they may be handled. 5.4 Differences in physical design of turbidimeters will cause differences in measured values for turbidity even though the same suspension isused for calibration. To minimize such differences, the following design criteria should be observed: 5.4.1 Light source: Tungsten lamp operated at a color temperature between 2200-3000 OK. 5.4 .2 Distance traversed by incident light and scattered light within the sample tube: Total not to exceed 10 cm. 5.4.3 Detector: Centered at 90° to the incident light path and not to exceed ± 30°C from 90 °C. The Detector, and filter system if used, shall have a spectral peak response between 400 and 600 nm. 5.5 The Hach Turbidimeter, Model 2100 and 2100 A, is in wide use and has been found to be reliable; however, other instruments meeting the above design criteria are acceptable. 6.0 Reagents 6.1 Turbidity-free water: Pass distilled water through a 0.45µ pore size membrane filter if such filtered water shows a lower turbidity than the distilled water. 6.2 Stock formazin turbidity suspension: Solution 1: Dissolve 1.00 g hydrazine sulfate, (NH2)2•H2SO4, in distilled water and dilute to 100 mL in a volumetric flask. Solution 2: Dissolve 10.00 g hexamethylene-tetramine in distilled water and dilute to 100 mL in a volumetric flask. In a 100 mL volumetric flask, mix 5.0 mL Solution 1 with 5.0 mL Solution 2. Allow to stand 24 hours at 25 ± 3°C, then dilute to the mark and mix. 6.3 Standard formazin turbidity suspension: Dilute 10.00 mL stock turbidity suspension to 100 mL with turbidity-free water. The turbidity of this suspension is defined as 40 units. Dilute portions of the standard turbidity suspension with turbidity-free water as required. 6.3.1 A new stock turbidity suspension should be prepared each month. The standard turbidity suspension and dilute turbidity standards should be prepared weekly by dilution of the stock turbidity suspension. 6.4 The AMCO-AEPA-1 standard as supplied requires no preparation or dilution prior to use. 7.0 Procedure 7.1 Turbidimeter calibration: The manufacturer's operating instructions should be followed. Measure standards on the turbidimeter covering the range of interest. If the instrument is already calibrated in standard turbidity units, this procedure will check the accuracy of the calibration scales. At least one standard should be run in each instrument range to be used. Some instruments permit adjustments of sensitivity so that scale values will correspond to turbidities. Reliance on a manufacturer's solid scattering standard for setting overall instrument sensitivity for all ranges is not an acceptable practice unless the turbidimeter has been shown to be free of drift on all ranges. If a pre-calibrated scale is not supplied, then calibration curves should be prepared for each range of the instrument. 7.2 Turbidities less than 40 units: Shake the sample to thoroughly sample into the turbidimeter tube. Read the turbidity directly from the instrument scale or from the appropriate calibration curve. 7.3 Turbidities exceeding 40 units: Dilute the sample with one or more volumes of turbidity-free water until the turbidity falls below 40 units. The turbidity of the original sample is then computed from the turbidity of the diluted sample and the dilution factor. For example, if 5 volumes of turbidity-free water were added to 1 volume of sample, and the diluted sample showed a turbidity of 30 units, then the turbidity of the original sample was 180 units. 7.3.1 The Hach Turbidimeters, Models 2100 and 2100A, are equipped with 5 separate scales: 0-0.2, 0-1.0 , 0-100, and 0-1000 NTU. The upper scales are to be used only as indicators of required dilution volumes to reduce readings to less than 40 NTU. NOTE 2: Comparative work performed in the MDQAR Laboratory indicates a progressive error on sample turbidities in excess of 40 units. 8.0 Calculation 8.1 Multiply sample readings by appropriate dilution to obtain final reading. 8.2 Report results as follows: NTU 1 -10 10 -40 40 -100 100 -400 400 -1000 > 1000 Record to Nearest: 0.1 1 5 10 50 100 9.0 Precision and Accuracy 9.1 In a single laboratory (EMSL), using surface water samples at levels of 26, 41, 75 and 180 NTU, the standard deviations were ± 0.60, ± 0.94, ±1.2 and ±4.7 units, respectively. 9.2 Accuracy data are not available at this time. Bibliography 1. Annual Book of ASTM Standards, Part 31, "Water", Standard D1889-71 , p 223 (1976). 2. Standard Methods for the Examination of Water and Wastewater, 14th Edition, p 132 , Method 214A, (1975). METHOD #: 150.2 TITLE: Test Method (December 1982) pH, Continuous Monitoring (Electrometric) ANALYTE: pH INSTRUMENTATION: pH Meter 1.0 Scope and Application 1.1 This method is applicable to the continuous pH measurement of drinking, surface, and saline waters, domestic and industrial waste waters. 2.0 Summary of Method 2.1 The pH of a sample is determined electrometrically using a glass electrode with a reference electrode or a single combination electrode. 3.0 Sample Handling and Preservation 3.1 The composition of the water or waste contacting the measuring electrode system must be representative of the total flow from the water body. 4.0 Interferences 4.1 The glass electrode, in general, is not subject to solution interferences from color, turbidity, colloidal matter, oxidants, reductants or high salinity. 4.2 Sodium error at pH levels greater than 10 can be reduced or eliminated by using a "low sodium error" electrode. 4.3 Manually inspect the conditions of the electrodes every 30 days for coating by oily materials or buildup of lime. If oil and grease and/ or scale buildup are not present, this time interval may be extended. 4.3.1 Coatings of oil, grease and very fine solids can impair electrode response. These can usually be removed by gentle wiping and detergent washing. The use of flowthrough electrode housings which provide higher flow velocity helps to prevent the coating action. 4.3.2 Heavy particulate matter such as lime accumulation can be removed by careful scrubbing or immersion in dilute (1 +9) hydrochloric acid. Continuous monitoring under these conditions benefits from ultrasonic or other in-line continuous cleaning methods. 4.4 Temperature effects on the electrometric measurement of pH arise from two sources. The first is caused by the change in electrode output at various temperatures. This interference can be controlled with instruments having temperature compensation or by calibrating the electrode-instrument system at the temperature of the samples. Forbest results, meters having automatic temperature compensation shouldbe calibrated with solutions within 5°C of the temperature of thestream to be measured. The second source is the change of pH inherentin the sample at various temperatures. This error is sample dependent and cannot be controlled, it should therefore be noted by reporting both the pH and temperature at the time of analysis. 5.0 Apparatus 5.1 pH Monitor -A wide variety of instruments are commercially available with various specifications and optional equipment. For unattended use, the monitor should be equipped with automatic or fixed temperature compensation and with a recorder or alarm function. 5.2 Glass electrode -with shielded cable between electrode and monitor unless preamplification is used. 5.3 Reference electrode -a reference electrode with a constant potential and with either a visible electrolyte or viscous gel fill. NOTE 1: Combination electrodes incorporating both measuring and reference functions are convenient to use and are available with solid, gel-type filling materials that require minimal maintenance. 5.4 Temperature sensor -for automatic compensator covering general ambient temperature range. 5.5 Electrode mounting -to hold electrodes; may be flow through (for small flows), pipe mounted or immersion. 6.0 Reagents 6.1 Primary standard buffer salts are available from the National Bureau of Standards and should be used in situations where extreme accuracy is required. 6.1.1 Preparation of reference solutions from these salts require some special precautions and handling1 such as low conductivity dilution water, drying ovens, and carbon dioxide free purge gas. These solutions should be replaced at least once each month. 6.2 Secondary buffers may be prepared from NBS salts or purchased as a solution from commercial vendors. Use of these commercially available solutions, which have been validated by comparison to NBS standards, is recommended for routine operation. These buffers may be retained for at least six months if kept stoppered. 7 .0 Calibration 7.1 1 Immersion type electrodes easily removed from mounting. 7.1.1 The electrode should be calibrated at a minimum of two points that bracket the expected pH of the water/waste and are approximately three pH units or more apart. 7.1.2 Repeat calibration adjustments on successive portions of the two buffer solutions until readings are within ± 0.05 pH units of the buffer value. If calibration problems occur. see 4.3. 7.1.3 Because of the wide variety of instruments available, no detail ed National Bureau of Standards Special Pubulication 260 operating instructions are provided. Instead, the analyst should refer to the particular manufacturer's instructions. 7.1.4 Calibration against two buffers should be carried out at least daily. If the pH of the fluid being measured fluctuates considerably, the calibration should be carried out more often. Calibration frequencies may be relaxed if historical data supports a longer period between calibration. 7.2 Immersion type electrodes not easily removed from mounting. 7.2.1 Collect a grab sample of the flowing material from a point as close to the electrode as possible. Measure the pH of this grab sample as quickly as possible with a laboratory -type pH meter. Adjust the calibration control of the continuous monitor to the reading obtained. 7.2.2 The temperature and condition of the grab sample must remain constant until its pH has been measured by the laboratory pH meter. The temperature of the sample should be measured and the temperature compensator of the laboratory pH meter adjusted. 7.2.3 The laboratory -type pH meter should be calibrated prior to use against two buffers as outlined in 7.1. 7.2.4 The continuous pH monitoring system should be initially calibrated against two buffers as outlined in 7 .1 before being placed into service. Recalibration (every 30 days) at two points is recommended if at all possible to ensure the measuring electrode is in working order. If this is not possible, the use of electrode testing features for a broken or malfunctioning electrode should be considered when purchasing the equipment. 7.2.5 The indirect calibration should be carried out at least once a day. If the pH of the fluid being measured fluctuates considerably, the calibration should be carried out more often. Calibration frequencies may be relaxed if historical data support a longer period between calibration. 7.2.6 If the electrode can be removed from the system, but with difficulty, it should be directly calibrated as in 7.1 at least once a month. 7.3 Flow-through type electrode easily removed from its mounting. 7.3.1 Calibrate using buffers as in 7.1. The buffers to be used may be the process stream itself as one buffer, and as a second buffer after adjustment of pH by addition of an acid or base. This will provide the larger volumes necessary to calibrate this type electrode. 7.3.2 Since the velocity of sample flow-through a flow through electrode can produce an offset error in pH reading, the user must have data on hand to show that the offset is known and compensation has been accomplished. 7.4 Flow-through type electrode not easily removed from its mounting. 7.4.1 Calibrate as in 7.2. 7.4.2 Quality control data must be on hand to show the user is aware of possible sample flow velocity effects. 8.0 Procedure 8.1 Calibrate the monitor and electrode system as outlined in Section 7. 8.2 Follow the manufacturer's recommendation for operation and installation of the system. 8.3 In wastewaters, the electrode may require periodic cleaning. After manual cleaning, the electrode should be calibrated as in 7.1 or 7.2 before returning to service. 8.4 The electrode must be placed so that the water or waste flowing past the electrode is representative of the system. 9.0 Calculations 9.1 pH meters read directly in pH units. Reports pH to the nearest 0.1 unit and temperature to the nearest °C. 10.0 Precision and Accuracy 10.1 Because of the wide variability of equipment and conditions and the changeable character of the pH of many process waters and wastes, the precision of this method is probably less than that of Method 150.1; however, a precision of 0.1 pH unit should be attainable in the range of ph 6.0 to 8.0. Accuracy data for continuous monitoring equipment are not available at this time. Bibliography 1. Annual Book of ASTM Standards, Part 31, "Water" Standard 1293-78 , Method D, p. 226 (1981). APPENDIX Y -CONSTRUCTION GENERAL PERMIT "ATTACHMENT C FROM THE GENERAL PERMIT" ATTACHMENT C ATTACHMENT C RISK LEVEL 1 REQUIREMENTS A. Effluent Standards [These requirements are the same as those in the General Permit order.] 1. Narrative -Risk Level 1 dischargers shall comply with the narrative effluent standards listed below: a. Storm water discharges and authorized non-storm water discharges regulated by this General Permit shall not contain a hazardous substance equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has been issued to regulate those discharges. b. Dischargers shall minimize or prevent pollutants in storm water discharges and authorized non-storm water discharges through the use of controls, structures, and management practices that achieve BAT for toxic and non-conventional pollutants and BCT for conventional pollutants. 2. Numeric -Risk Level 1 dischargers are not subject to a numeric effluent standard. B. Good Site Management "Housekeeping" 1. Risk Level 1 dischargers shall implement good site management (i.e., "housekeeping") measures for construction materials that could potentially be a threat to water quality if discharged. At a minimum, Risk Level 1 dischargers shall implement the following good housekeeping measures: a. Conduct an inventory of the products used and/or expected to be used and the end products that are produced and/or expected to be produced . b. Cover and berm loose stockpiled construction materials that are not actively being used (i .e. soil , spoils, aggregate, fly-ash , stucco, hydrated lime, etc.). c. Store chemicals in watertight containers or in a storage shed (completely enclosed), with appropriate secondary containment to prevent any spillage or leakage. 1 ATTACHMENT C d. Minimize exposure of construction materials with precipitation. e. Implement BMPs to prevent the off-site tracking of loose construction and landscape materials. 2. Risk Level 1 dischargers shall implement good housekeeping measures for waste management, which, at a minimum, shall consist of the following : a. Prevent disposal of any rinse or wash waters or materials on impervious or pervious site surfaces or into the storm drain system. b. Ensure the containment of sanitation facilities (e.g., portable toilets) to prevent discharges of pollutants to the storm water drainage system or receiving water. c. Clean or replace sanitation facilities and inspecting them regularly for leaks and spills. d. Cover waste disposal containers at the end of every business day and during a rain event. e. Prevent discharges from waste disposal containers to the storm water drainage system or receiving water. f. Contain and securely protect stockpiled waste material from wind and rain at all times unless actively being used. g. Implement procedures that effectively address hazardous and non- hazardous spills. h. Develop a spill response and implementation element of the SWPPP prior to commencement of construction activities. The SWPPP shall require that: i. Equipment and materials for cleanup of spills shall be available on site and that spills and leaks shall be cleaned up immediately and disposed of properly; and ii . Appropriate spill response personnel are assigned and trained . i. Ensure the containment of concrete washout areas and other washout areas that may contain additional pollutants so there is no discharge into the underlying soil and onto the surrounding areas. 2 ATTACHMENT C 3. Risk Level 1 dischargers shall implement good housekeeping for vehicle storage and maintenance, which , at a minimum, shall consist of the following: a. Prevent oil, grease, or fuel to leak in to the ground, storm drains or surface waters. b. Place all equipment or vehicles, which are to be fueled , maintained and stored in a designated area fitted with appropriate BMPs. c. Clean leaks immediately and disposing of leaked materials properly. 4. Risk Level 1 dischargers shall implement good housekeeping for landscape materials, which , at a minimum, shall consist of the following : a. Contain stockpiled materials such as mulches and topsoil when they are not actively being used. b. Contain fertilizers and other landscape materials when they are not actively being used. c. Discontinue the application of any erodible landscape material within 2 days before a forecasted rain event or during periods of precipitation. d. Apply erodible landscape material at quantities and application rates according to manufacture recommendations or based on written specifications by knowledgeable and experienced field personnel. e. Stack erodible landscape material on pallets and covering or storing such materials when not being used or applied. 5. Risk Level 1 dischargers shall conduct an assessment and create a list of potential pollutant sources and identify any areas of the site where additional BMPs are necessary to reduce or prevent pollutants in storm water discharges and authorized non-storm water discharges. This potential pollutant list shall be kept with the SWPPP and shall identify all non-visible pollutants which are known , or should be known, to occur on the construction site . At a minimum, when developing BMPs, Risk Level 1 dischargers shall do the following: 3 ATTACHMENT C a. Consider the quantity, physical characteristics (e .g., liquid, powder, solid), and locations of each potential pollutant source handled , produced , stored, recycled, or disposed of at the site. b. Consider the degree to which pollutants associated with those materials may be exposed to and mobilized by contact with storm water. c. Consider the direct and indirect pathways that pollutants may be exposed to storm water or authorized non-storm water discharges. This shall include an assessment of past spills or leaks, non-storm water discharges, and discharges from adjoining areas. d. Ensure retention of sampling , visual observation, and inspection records. e. Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water discharges and authorized non-storm water discharges. 6. Risk Level 1 dischargers shall implement good housekeeping measures on the construction site to control the air deposition of site materials and from site operations. Such particulates can include, but are not limited to, sediment, nutrients, trash, metals, bacteria , oil and grease and organics. C. Non-Storm Water Management 1. Risk Level 1 dischargers shall implement measures to control all non - storm water discharges during construction . 2. Risk Level 1 dischargers shall wash vehicles in such a manner as to prevent non-storm water discharges to surface waters or MS4 drainage systems. 3. Risk Level 1 dischargers shall clean streets in such a manner as to prevent non-storm water discharges from reaching surface water or MS4 drainage systems. D. Erosion Control 1. Risk Level 1 dischargers shall implement effective wind erosion control. 4 ATTACHMENT C 2. Risk Level 1 dischargers shall provide effective soil cover for inactive 1 areas and all finished slopes , open space, utility backfill , and completed lots. 3. Risk Level 1 dischargers shall limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist. Where plastic materials are deemed necessary, the discharger shall consider the use of plastic materials resistant to solar degradation. E. Sediment Controls 1. Risk Level 1 dischargers shall establish and maintain effective perimeter controls and stabilize all construction entrances and exits to sufficiently control erosion and sediment discharges from the site. 2. On sites where sediment basins are to be used, Risk Level 1 dischargers shall , at minimum, design sediment basins according to the method provided in Appendix 2. F. Run-on and Runoff Controls Risk Level 1 dischargers shall evaluate the quantity and quality of run-on and runoff through observation and sampling. Risk Level 1 dischargers shall effectively manage all run -on , all runoff within the site and all runoff that discharges off the site. Run -on from off site shall be directed away from all disturbed areas or shall collectively be in compliance with the effluent limitations in this General Permit. G. Inspection, Maintenance and Repair 1. Risk Level 1 dischargers shall ensure that all inspection, maintenance repair and sampling activities at the project location shall be performed or supervised by a Qualified SWPPP Practitioner (QSP) representing the discharger. The QSP may delegate any or all of these activities to an employee trained to do the task(s) appropriately, but shall ensure adequate deployment. 2. Risk Level 1 dischargers shall perform weekly inspections and observations, and at least once each 24-hour period during extended storm events, to identify BMPs that need maintenance to operate effectively, that have failed , or that could fail to operate as intended. Inspectors shall be the QSP or be trained by the QSP . 1 Inactive areas of construction are areas of construction activity that have been disturbed and are not scheduled to be re-disturbed for at least 30 days. 5 ATTACHMENT C 3. Upon identifying failures or other shortcomings, as directed by the QSP, Risk Level 1 dischargers shall begin implementing repairs or design changes to BMPs within 72 hours of identification and complete the changes as soon as possible. 4. For each inspection required , Risk Level 1 dischargers shall complete an inspection checklist, using a form provided by the State Water Board or Regional Water Board or in an alternative format. 5. Risk Level 1 dischargers shall ensure that checklists shall remain onsite with the SWPPP and at a minimum, shall include: a. Inspection date and date the inspection report was written . b. Weather information, including presence or absence of precipitation , estimate of beginning of qualifying storm event, duration of event, time elapsed since last storm , and approximate amount of rainfall in inches. c. Site information, including stage of construction, activities completed, and approximate area of the site exposed . d. A description of any BMPs evaluated and any deficiencies noted. e. If the construction site is safely accessible during inclement weather, list the observations of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non-storm water controls. Otherwise, list the results of visual inspections at all relevant outfalls , discharge points, downstream locations and any projected maintenance activities. f. Report the presence of noticeable odors or of any visible sheen on the surface of any discharges. g. Any corrective actions required , including any necessary changes to the SWPPP and the associated implementation dates. h. Photographs taken during the inspection , if any. 1. Inspector's name, title, and signature. H. Rain Event Action Plan Not required for Risk Level 1 dischargers. 6 ATTACHMENT C I. Risk Level 1 Monitoring and Reporting Requirements T bl 1 S a e -ummary o f M ·t . R om ormg t equ1remen s Risk Level 1 Visual Inspections Sample Collection Monthly Pre-storm Non-Event Daily Post Storm Receiving storm Baseline REAP Water Water Storm Storm Discharge Water Discharge X X X 1. Construction Site Monitoring Program Requirements a. Pursuant to Water Code Sections 13383 and 13267, all dischargers subject to the General Permit (cite Order No.) shall develop and implement a written site specific Construction Site Monitoring Program (CSMP) in accordance with the requirements of this Section. The CSMP shall include all monitoring procedures and instructions, location maps, forms, and checklists as required in this section . The CSMP shall be developed prior to the commencement of construction activities, and revised as necessary to reflect project revisions . The CSMP shall be a part of the Storm Water Pollution Prevention Plan (SWPPP), included as an appendix or separate SWPPP chapter. b. Existing dischargers registered under the State Water Board Order No. 99-08-DWQ shall make and implement necessary revisions to their Monitoring Program to reflect the changes in this General Permit in a timely manner but no later than 100 days after [insert adoption date of permit]. Existing dischargers shall continue to implement their existing Monitoring Program in compliance with State Water Board Order No. 99-08-DWQ until the necessary revisions are completed according to the schedule above. c. When a change of ownership occurs for all or any portion of the construction site prior to completion or final stabilization, the new discharger(s) [responsible party(ies)] shall comply with these requirements as of the date the ownership change occurs. 2. Objectives The CSMP shall be developed and implemented to address the following objectives: 7 ATTACHMENT C a. To demonstrate that the site is in compliance with the Discharge Prohibitions; b. To determine whether non-visible pollutants are present at the construction site and are causing or contributing to exceedances of water quality objectives; c. To determine whether immediate corrective actions, additional Best Management Practice (BMP) implementation, or SWPPP revisions are necessary to reduce pollutants in storm water discharges and authorized non-storm water discharges; and d. To determine whether BMPs included in the SWPPP/Rain Event Action Plan (REAP) are effective in preventing or reducing pollutants in storm water discharges and authorized non-storm water discharges. 3. Risk Level 1 -Visual Monitoring (Inspection) Requirements for Qualifying Rain Events a. Risk Level 1 dischargers shall visually observe (inspect) storm water discharges at all discharge locations within two business days (48 hours) after each qualifying rain event. b. Risk Level 1 dischargers shall visually observe (inspect) the discharge of stored or contained storm water that is derived from and discharged subsequent to a qualifying rain event producing precipitation of½ inch or more at the time of discharge. Stored or contained storm water that will likely discharge after operating hours due to anticipated precipitation shall be observed prior to the discharge during operating hours. c. Risk Level 1 dischargers shall conduct visual observations (inspections) during business hours only. d. Risk Level 1 dischargers shall record the time , date and rain gauge reading of all qualifying rain events. e. Within 2 business days (48 hours) prior to each qualifying rain event, Risk Level 1 dischargers shall visually observe (inspect): i. all storm water drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. If needed, the discharger shall implement appropriate corrective actions. 8 ATTACHMENT C ii. all BMPs to identify whether they have been properly implemented in accordance with the SWPPP/REAP. If needed, the discharger shall implement appropriate corrective actions iii . any storm water storage and containment areas to detect leaks and ensure maintenance of adequate freeboard . f. For the visual observations (inspections) described in c.i and c.iii above, Risk Level 1 dischargers shall observe the presence or absence of floating and suspended materials, a sheen on the surface, discolorations, turbidity, odors, and source(s) of any observed pollutants. g. Within two business days (48 hours) after each qualifying rain event, Risk Level 1 dischargers shall conduct post rain event visual observations (inspections) to (1) identify whether BMPs were adequately designed , implemented, and effective, and (2) identify additional BMPs and revise the SWPPP accordingly. h. Risk Level 1 dischargers shall maintain on-site records of all visual observations (inspections), personnel performing the observations, observation dates, weather conditions , locations observed, and corrective actions taken in response to the observations. 4. Risk Level 1 -Visual Observation and Sample Collection Exemptions a. Risk Level 1 dischargers shall be prepared to conduct visual observation (inspections) until the minimum requirements of Section 1.3 above are completed. Risk Level 1 dischargers are not required to conduct visual observation (inspections) under the following conditions: i. During dangerous weather conditions such as flooding and electrical storms; ii . Outside of scheduled site business hours. b. If no required visual observations (inspections) are collected due to these exceptions, Risk Level 1 dischargers shall include an explanation in their SWPPP and in the Annual Report documenting why the visual observations (inspections) were not conducted. 5. Risk Level 1 -Monitoring Methods 9 ATTACHMENT C Risk Level 1 dischargers shall include a description of the visual observation locations, visual observation procedures, and visual observation follow-up and tracking procedures in the CSMP. 6. Risk Level 1 -Non-Storm Water Discharge Monitoring Requirements a. Visual Monitoring Requirements: i. Risk Level 1 dischargers shall visually observe (inspect) each drainage area for the presence of (or indications of prior) unauthorized and authorized non-storm water discharges and their sources ii. Risk Level 1 dischargers shall conduct one visual observation (inspection) quarterly in each of the following periods: January- March, April-June, July-September, and October-December. Visual observation (inspections) are only required during daylight hours (sunrise to sunset). iii. Risk Level 1 dischargers shall ensure that visual observations (inspections) document the presence or evidence of any non- storm water discharge (authorized or unauthorized), pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity, odor, etc.), and source. Risk Level 1 dischargers shall maintain on -site records indicating the personnel performing the visual observation (inspections), the dates and approximate time each drainage area and non-storm water discharge was observed , and the response taken to eliminate unauthorized non-storm water discharges and to reduce or prevent pollutants from contacting non-storm water discharges. 7. Risk Level 1 -Non-Visible Pollutant Monitoring Requirements a. Risk Level 1 dischargers shall collect a sample during any breach, malfunction, leakage, or spill observed during a visual inspection which could result in the discharge of pollutants to surface waters that would not be visually detectable in storm water. b. Risk Level 1 dischargers shall ensure that water samples are large enough to characterize the site conditions c. Risk Level 1 dischargers shall collect samples at all discharge locations that can be safely accessed. 10 ATTACHMENT C d. Risk Level 1 dischargers shall collect samples during the first two hours of discharge from rain events that occur during business hours and which generate runoff. e. Risk Level 1 dischargers shall analyze samples for all non-visible pollutant parameters (if applicable) -parameters indicating the presence of pollutants identified in the pollutant source assessment required (Risk Level 1 dischargers shall modify their CSMPs to address these additional parameters in accordance with any updated SWPPP pollutant source assessment) f. Risk Level 1 dischargers shall collect a sample of storm water that has not come in contact with the disturbed soil or the materials stored or used on-site (uncontaminated sample) for comparison with the discharge sample. g. Risk Level 1 dischargers shall compare the uncontaminated sample to the samples of discharge using field analysis or through laboratory analysis.2 h. Risk Level 1 dischargers shall keep all field /or analytical data in the SWPPP document. 8. Risk Level 1 -Particle Size Analysis for Sedimentation Basin or Project Risk Justification Risk Level 1 dischargers utilizing a sediment basin and/or justifying an alternative project risk shall report a soil particle size analysis, using test method ASTM D-422 (Standard Test Method for Particle-Size Analysis of Soils), as revised, to determine the percentages of sand , very fine sand, silt, and clay on the site. The percentage of particles less than 0.02 mm in diameter must also be determined . 9. Risk Level 1 -Records Risk Level 1 dischargers shall retain records of all storm water monitoring information and copies of all reports (including Annual Reports) for a period of at least three years. Risk Level 1 dischargers shall retain all records on-site while construction is ongoing. These records include: 2 For laboratory analysis, all sampling, sample preservation, and analyses must be conducted according to test procedures under 40 CFR Part 136. Field discharge samples shall be collected and analyzed according to the specifications of the manufacturer of the sampling devices employed. 11 ATTACHM ENT C a. The date, place, time of facility inspections , sampling , visual observation (inspections), and/or measurements, including precipitation; b. The individual(s) who performed the facility inspections, sampling, visual observation (inspections), and or measurements; c. The date and approximate time of analyses; d. The individual(s) who performed the analyses; e. A summary of all analytical results from the last three years, the method detection limits and reporting units , and the analytical techniques or methods used ; f. Rain gauge readings from site inspections; g. Quality assurance/quality control records and results; h. Non-storm water discharge inspections and visual observation (inspections) and storm water discharge visual observation records (see Sections 1.3 and 1.6 above); i. Visual observation and sample collection exception records (see Section 1.4 above); and j. The records of any corrective actions and follow-up activities that resulted from analytical results, visual observation (inspections), or inspections. 12