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HomeMy WebLinkAboutCT 03-06; BLACKRAIL 16; STORM WATER POLLUTION PREVENTION PLAN; 2006-09-26I., I I I I I I I . . . . Storm Water Pollution Prevention Plan I For: I . Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 Prepared for: I Trans West Housing, Inc. 9968 Hibeit Street, Suite 102 San Diego, CA 92131 I Owner/ Developer/ Contractor: TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92008 (858) 653-3003 Paul O'Boyle Project Site Location /Address: BLACK RAIL ROAD CITY OF CARLSBAD, COUNTY OF SAN DIEGO, CALIFORNIA 92008 Contractor's Storm Water Pollution Prevention Manager JOBSITE SUPERINTENDANT SWPPP Prepared by: EXCEL ENGINEERING 440 STATE PLACE. ESCONDIDO, CA 92029 (760)745-8118 SWPPP Preparation Date: 9/18/2006 Estimated Project Dates: Start of Construction: Oct. 1, 2006 . Completion of Construction: Feb. 1, 2008 WDID No.: 9 37C340782 I Li Storm Water Pollution Prevention Plan (SWPPP) - Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 I 9/26/2006 I Contents Section 100 SWPPP Certifications and Approval ........... . ....................................................................... 100-1 100.1 Initial SWPPP Certification by Contractor ................................. . .................................... .100-1 100.2 Owner/Developer Approval and Certification of SWPPP ........................................ . ....... 100-2 100.3 Annual Compliance Certification .................................. ................................................... 100-3 Section 200 SWPPP Amendments ..........................................................................................................200-1 200.1 SWPPP Amendment Certification and Approval.............................................................200-1 200.2 Amendment Log ............................................................................................................. 200-3 Section 300 Introduction and Project Description.................................................................................300-1 300.1 Introduction and Project Description ............................................................................... 300-1 300.2 Unique Site Features ................. ............................ ... ...... ................................................300-1 300.3 Construction Site Estimates ............ ................................. ..............................................300-1 300.4 Project Schedule/Water Pollution Control Schedule .......................................................300-2 300.5 Contact Information/List of Responsible Parties ........................................................... ..300-3 Section400 References ............................................................. . ............................................................... 400-1 Section500 Body of SWPPP .................................................................................................................... 500-1 500.1 Objectives ........................................................................ . .................................. ............ 500-1 5002 Vicinity Map ..... ................................................................................................................ 500-2 500.3 Pollutant Source Identification and BMP Selection .........................................................500-2 500.3.1 Inventory of Materials and Activities that May Pollute Storm Water................500-2 500.3.2 Existing (pre-construction) Control Measures .................................................500-3 500.3.3 Nature of Fill Material and Existing Data Describing the Soil ..........................500-4 500.3.4 Erosion Control .................... ................................................... . ........................ 500-4 500.3.5 Sediment Control ........................................................... . ..................... . ........... 500-7 500.3.6 Tracking Control..............................................................................................500-7 500.3.7 Wind Erosion Control ............................................... . ........................................ 500-8 500.3.8 Non-Storm Water Control ... .............................................................................. 500-9 500.3.9 Waste Management and Materials Pollution Control ....................................500-10 500.3.10 Cost Breakdown for Water Pollution Control ................................................. 500-13 500.4 Water Pollution Control Drawings (WPCDs) .................................. . ....................... . ...... 500-13 500.5 Construction BMP Maintenance, Inspection, and Repair ............................................. 500-13 500.6 Post-Construction Storm Water Management...............................................................500-13 500.6.1 Post-Construction Control Practices ............ ........................ .................. ........ 500-13 500.6.2 Operation/Maintenance after Project Completion ............... ..........................500-14 TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 Page i SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 I I I I I I I I I I I d I I I - Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 500.7 Training ........................................................................................................................500-14 500.8 List of Subcontractors ................................................................................................... 500-15 500.9 Other Plans/Permits ..................................................... .. ............................................... 500-15 Section 600 Monitoring Program and Reports ....................................................................................... 600-1 600.1 Site Inspections ............................................................................................................... 600-1 600.2 Non-Compliance Reporting ................................ ................................ ............................ 600-1 600.3 Record Keeping and Reports ......................... .. ........................... . ................. . ................. 600-2 600.4 Sampling and Analysis Plan for Sediment ....... . .............................................................. 600-2 600.4.1 Scope of Monitoring Activities .................................................................... ..... 600-2 600.4.2 Monitoring Strategy ......................................................................................... 600-2 600.4.3 Monitoring Preparation .................................................................................... 600-4 600.4.4 Sample Collection and Handling ............................................................. .. ...... 600-5 600.4.5 Sample Analysis ......... . ..................................................................................... 600-8 600.4,6 Quality Assurance/Quality Control ....................................................... . ........ 600-10 600.4.7 Data Management and Reporting ................................................................. 600-10 600.4.8 Data Evaluation ............................................................................................. 600-10 600.4.9 Change of Conditions .................................................................................... 600-1 1 600.5 Sampling and Analysis Plan for Non-Visible Pollutants ....................... ......................... 600-1 1 600.5.1 Scope of Monitoring Activities ....................................................................... 600-1 1 600.5.2 Monitoring Strategy ................................................................................. . ..... 600-12 600.5.3 Monitoring Preparation ....... . ........................................ . ................................. 600-14 600.5.4 Analytical Constituents ........................................................... . ...................... 600-15 600.5.5 Sample Collection and Handling ...................................... ............................. 600-16 600.5.6 Sample Analysis ..................................................... ...... ..................................600-19 600.5. 7 Quality Assurance/Quality Control ................................................................600-21 600.5.8 Data Management and Reporting ............................................................ . ..... 600-21 600.5.9 Data Evaluation ........................... .. ................................. . ................................ 600-21 600.5.10 Change of Conditions ....................................................................................600-22 SWPPP Attachments AttachmentA ......................................... . .......... . ...................................................................... Vicinity Map Attachment B ........................................................................................ Water Pollution Control Drawings AttachmentC..............................................................................................BMP Consideration Checklist Attachment D ..................................................... Computation Sheet for Determining Runoff Coefficients Attachment E ...................................................... Computation Sheet for Determining Run-on Discharges AttachmentF ...........................................................................................................Notice of Intent (NO I) TRANS WEST HOUSING, INC. 9968 FIlBERT STREET, SUITE 102 - Page ii SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I I I 1 I I I I I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I Attachment G .................... Program for Maintenance, Inspection, and Repair of Construction Site BMPs Attachment H...............................................Storm Water Quality Construction Site Inspection Checklist ' Attachment j ................... Attachment I ....................................................................... ................. Trained Contractor Personnel Log ......................................................... Subcontractor Notification Letter and Log I Attachment K Attachment L ..................................... .................... ................................................................................. Notice of Non-Compliance . .................................... SWPPP and Monitoring Program Checklist Attachment M.. .................................................. . ........................ Annual Certification of Compliance Form I Attachment N ............................................... . ............................................................. Other Plans/Permits Attachment 0 ............................................................................ Water Pollution Control Cost Breakdown I Attachment P Attachment Q..............................................................................................BMPs ....................................... ........................................................ Notice of Termination (NOT) Selected for the Project I Attachment Attachment R S.......Construction .......................................................................................................... Sampling Activity Log Material and Pollutant Testing Guidance Table - Non-Visible Pollutants Attachment T .....................................................................................................Discharge Reporting Log I 1 I I I Li I I I TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 Page iii SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 . Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I Section 100 i SWPPP Certifications and Approval I 100.1 Initial SWPPP Certification by Contractor Project Name: Black Rail 16 (Tabata Subdivision) I Project Number: City of Carlsbad, CT 03-06 "I certify under a 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." I I I I I I Contractor's Signatur' I ,/ Y/5/, Contractor's Name and TIQe Telephone Number 1 I i I TRANS WEST HOUSING, INC. Section 100 9968 HIBERT STREET, SUITE 102 Page 100-1 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 1 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 26 (Tabata Subdivision) City of Carlsbad, CT 03-06 100.2 Owner/Developer Approval and Certification of SWPPP Owner/Developer Approval and Certification of the Storm Water Pollution Prevention Plan Project Name: Black Rail 16 (Tabata Subdivision) 1 Project Number: City of Carlsbad, CT 03-06 I "I certify under a 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 I 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 I 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." Owner/Developer SignatV Date I &C (f) Owner/Developer Name Telephone Number I I I I TRANS WEST HOUSING, INC. Section 100 9968 F-IIBERT STREET, SUITE 102 Page 100-2 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I LI I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 100.3 Annual Compliance Certification By July 1 of each year, the Contractor shall submit an Annual Certification of Compliance to the appropriate Regional Water Quality Control Board (RWQCB), stating compliance with the terms and conditions of the Permit and the SWPPP. The Annual Certification of Compliance Form is included in Attachment M. Completed Annual Certifications of Compliance and Approvals can be found in the following pages. TRANS WEST HOUSING, INC. Section 100 9968 HIBERT STREET, SUITE 102 Page 100-3 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 Section 200 SWPPP Amendments 200.1 SWPPP Amendment Certification and Approval This SWPPP shall be amended: Whenever there is a change in construction or operations which may affect the discharge of pollutants to surface waters, groundwater(s), or a municipal separate storm sewer system (MS4); or If any condition of the Permits is violated or the general objective of reducing or eliminating pollutants in storm water discharges has not been achieved. If the RWQCB determines that a Permit violation has occurred, the SWPPP shall be amended and implemented within 14-calendar days after notification by the RWQCB; Annually, prior to the defined rainy season; and When deemed necessary by the Owner/Developer/Contractor. The following items will be included in each amendment: Who requested the amendment. The location of proposed change. The reason for change. The original BMP proposed, if any. The new BMP proposed. The amendments for this SWPPP, along with the Owner/Developer/Contractor's Certification and the Owner/Developer/Contractor approval, can be found in the following pages. Amendments are listed in the Amendment Log in section 200.2 1 TRANS WEST HOUSING, INC. Section 200 - 9968 HIBERT STREET, SUITE 102 Page 200-1 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 1 8/2/2006 I I I I I 1 I I I I I 1 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 I SWPPP Amendment No. I Project Name: Black Rail 16 (Tabata Subdivision) Project Number: City of Carlsbad, CT 03-06 I Contractor Certification of the Storm Water Pollution Prevention Plan Amendment I "I certify under a 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 I 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, I including the possibility of fine and imprisonment for knowing violations.' Contractor's Signature Date Contractor's Name and Title Telephone Number Owner/Developer Approval of the Storm Water Pollution Prevention Plan Amendment I "I certify under a 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 I 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, I including the possibility of fine and imprisonment for knowing violations." Owner/ Developer Signature Date Owner/ Developer Name and Title Telephone Number TRANS WEST HOUSING, INC. Section 200 R 9968 HIBERT STREET, SUITE 102 Page 200-2 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 1 8/2/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail .16 (Tabata Subdivision) City of Carlsbad, Cr 03-06 200.2 Amendment Log Project Name: Black Rail 16 (Tabata Subdivision) Project Number: City of Carlsbad, CT 03-06 Amendment Date Brief Description of Amendment - Prepared By No. TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 Section 200 Page 200-3 11 8/2/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I Section 300 i Introduction and Project Description ' 300.1 Introduction and Project Description This project will create anew residential subdivision, consisting of 18 lots, 16 for single- family homes and two open space lots. The site is located in the City of Carlsbad, County of San Diego off of Black Rail Road, south of the intersection of Black Rail Road and Poinsettia Lane and east of Black Rail Road. Reference numbers for the City of Carlsbad ' are CT 03-06, DWG. NO. 434.9A and DWG. NO. 434. The existing site is undeveloped gently sloping terrain with the highest point at roughly an elevation 381 located near the northwesterly corner of the property boundary. At the easterly property boundary a I moderate to steep slope to the lowest point of the site, located near the northeasterly corner - of the property, to roughly an elevation of 318 hilly terrain, which drains into two large drainage courses east of the site that ultimately flow into Batiquitos Lagoon. Associated I drainage structures include a curb inlet at the eastend of the proposed cul-de-sac street - (Zephyr Court) that will collect stormwater runoff and distribute it through a stormwater media filtration device. When the runoff is filtered it will then drain out onto an energy I dissipator at the toe of the eastern slope. Additional runoff is carried by D-75 brow ditches, which drain to either curb outlets in Black Rail Road or energy dissipators at the eastern end of the site. Public water and sewer mains will also be constructed in the new on site I street, Zephyr Court, and inspected by Carlsbad Municipal Water District. 1 300.2 Unique Site Features An existing slope on the eastern portion of the site terminates at an existing drainage I course, which will drain the majority of the site runoff. An open space lot will be dedicated on the map to protect existing sensitive vegetation as well as the portion of the drainage course at the eastern boundary of the site. Soil for this site has been classified as type D I (please refer to map on next page) 300.3 Construction Site. Estimates - The following are estimates of the construction site: I Construction site area 5.26 acres Percentage impervious area before construction 0 % I Runoff coefficient before construction (1) 0.41 I TRANS WEST HOUSING, INC. Section 300 9968 HIBERT STREET, SUITE 102 Page 300-1 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 8/2/2006 I I Storm Water Pollution Prevention Plan (SWPPP) I Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 Percentage impervious area after construction 45 % Runoff coefficient after construction (1) 0.49 Anticipated storm water flow on to the construction site (2) 3.07 cfs 1 (1) Calculations are shown in Attachment D. (2) Calculations are shown in Attachment B 1 300.4 Project Schedule/Water Pollution Control Schedule I Estimate Construction Start: 10-1-06 Estimate Construction Finish: 2-1-08 I Mobilization of equipment and materials to begin on 10-01-06 Store temporary soil stabilization and temporary sediment control products beginning on 10-1-06 I Install stabilized construction entrance on 10-1-06 Start implementation of temporary soil stabilization and sediment control BMPs on 9-28-06. Continue to implement and maintain temporary BMPs throughout rainy season. I Complete installation of temporary soil stabilization and sediment control BMPs on 10-1- I Site preparation: Clearing and grubbing will occur from 10-1-06 to 10-15-06 Excavation to begin on 10-15-06 and continue through 11-15-06 Rainy season starts 10-01-06 I Grading work 10-15-06 to 11-15-06. Rainy season ends 4-30-06 Installation of utilities (power lines, phone lines, storm drain, water lines and sewer lines) I 12-1-06 to 7-1-07 Implement final erosion control of substantially completed areas 7-1-07 Install temporary concrete washout 5-1-07 - I Submit annual rainy season implementation schedule 10-25-07 Start implementation of temporary soil stabilization and sediment control BMPs on 10-28- 07 (before rainy season starts). Continue to implement and maintain temporary BMPs throughout rainy season. Complete installation of temporary soil Stabilization and sediment control BMPs on 11-5- Continue to apply soil stabilization and sediment controls as needed during construction. Rainy season starts 10-01-07 I Begin trenching, backfilling and compaction on 12-1-06 I TRANS WEST HOUSING, INC. Section 300 9968 HIBERT STREET, SUITE 102 Page 300-2 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 1 8/2/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) 1 City of Carlsbad, CT 03-06 Begin final paving/ construction on 9-1-07. Continue to apply soil stabilization and sediment controls as needed during construction Remove concrete washout and restore area to original grade Schedule subcontractors for application of permanent erosion control 12-1-07 Start final stabilization, revegetation and landscape by 12-1-07 Project complete 2-1-08 I 300.5 Contact Information/List of Responsible Parties The Storm Water Pollution Prevention Manager (SWPPM) assigned to this project is: Paul O'Boyle (858) 653-3003 Trans West Housing, Inc. 9968 Hibert Street, Suite 102 San Diego, CA 92131 I The SWPPM shall have primary responsibility and significant authority for the implementation, maintenance, inspection and amendments to the approved SWPPP, The SWPPM will be available at all times throughout the duration of the project.. Duties of the I Owner/Developer/Contractor's SWPPM include but are not limited to: I . Ensuring full compliance with the SWPPP and the Permit Implementing all elements of the SWPPP, including but not limited to: I - Implementation of prompt and effective erosion and sediment control measures - Implementing all non-storm water management, and materials and waste I management activities such as: monitoring discharges (dewatering, diversion devices); general site clean-up; vehicle and equipment cleaning, fueling and maintenance; spill control; ensuring that no materials other than storm water are I discharged in quantities which will have an adverse effect on receiving waters or storm drain systems; etc. I • Pre-storm inspections I . Storm event inspections Post-storm inspections TRANS WEST HOUSING, INC. . Section 300 9968 HIBERT STREET, SUITE 102 . Page 300-3 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 I 8/2/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 26 (Tabata Subdivision) City of Carlsbad, CT 03-06 Routine inspections as specified in the project's specifications or described in the swPPP Updates/ Amendments to the SWPPP, as needed Preparing annual compliance certification Ensuring elimination of all unauthorized discharges - The SWPPM shall be assigned authority by the Owner/Developer/Contractor to mobilize crews in order to make immediate repairs to the control measures Coordinate with the Owner/Developer/Contractor to assure all of the necessary corrections/ repairs are made immediately, and that the project complies with the SWPPP, the Permit and approved plans at all times Submitting Notices of Discharge and reports of Illicit Connections or Illegal Discharges TRANS WEST HOUSING, INC. Section 300 9968 HIBERT STREET, SUITE 102 Page 300-4 SAN DIEGO, COUNTY OF SAN DIEGO, CALIFORNIA 92131 8/2/2006 Section 400 References The following documents are made a part of this SWPPP by reference: Project plans and specifications DWG. NO.434-9A and 434-9, dated July, 2006, prepared by EXCEL ENGINEERING. a State Water Resources Control Board (SWRCB) Qrder No. 99-08-DWQ, National Pollutant Discharge Elimination System (NPDES) General Permit No. CAS000002, Waste Discharge Requirements (WDRs) for Discharges of Storm Water Runoff Associated with Construction Activity. a California Stormwater BMP Handbook - Construction, January 2003 Preliminary Geotechnical Investigation by Vinje & Middleton Engineering, Inc., Job # 03-236-P, May 22, 2003, and any updates. Geotechnical Update Letter, Black Rail TM No. 2-026, Carlsbad, California, by Geo Tek, Inc., September 5, 2006. Update Phase 1 ESA Report, 5.24 Acre Black Rail Road Property, Carlsbad, California, by Vinje & Middleton Engineering, Inc., Job # 05-275-H, June 2, 2005. TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Section 400 Page 400-1 I I Section 500 I Body of SWPPP i 500.1 Objectives This Storm Water Pollution Prevention Plan (SWPPP) has six main objectives: Identify all pollutant sources, including sources of sediment that may affect the quality of storm water discharges associated with construction activity (storm water discharges) from the construction site, and I . Identify non-storm water discharges, and Identify, construct, implement in accordance with a time schedule, and maintain Best I Management Practices (BMPs) to reduce or eliminate pollutants in storm water discharges and authorized non-storm water discharges from the construction site I during construction, and Develop a maintenance schedule for BMPs installed during construction designed to reduce or eliminate pollutants after construction is completed (post-construction I BMPs). I . Identify a sampling and analysis strategy and sampling schedule for discharges from construction activity which discharge directly into water bodies listed on Attachment 3 of the Permit (Clean Water Act Section 303(d) [303(d)] Water Bodies listed for I Sedimentation). For all construction activity, identify a sampling and analysis strategy and sampling I - schedule for discharges that have been discovered through visual monitoring to be potentially contaminated by pollutants not visually detectable in the runoff. - I This SWPPP conforms to the required elements of the General Permit No. CAS000002 issued by the State of California, State Water Resources Control Board (SWRCB). This SWPPP will be modified and amended to reflect any amendments to the Permit or any I changes in construction or operations that may affect the discharge of pollutants from the construction site to surface waters, groundwaters, or the municipal separate storm sewer system (MS4). The SWPPP will also be amended if it is in violation of any condition of the I Permit or has not achieved the general objective of reducing pollutants in storm water discharges. The SWPPP shall be readily available on-site for the duration of the project. I I TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-1 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 1 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 26 (Tabata Subdivision) I City of Carlsbad, CT 03-06 1 500.2 Vicinity Map The construction project vicinity map showing the project location, surface water I boundaries, geographic features, construction site perimeter, and general topography, is located in Attachment A. I 500.3 Pollutant Source Identification and BMP Selection 1 500.3.1 Inventory of Materials and Activities that May Pollute Storm Water The following is a list of construction materials that will be used and activities that will be I performed that will have the potential to contribute pollutants, other than sediment, to storm water runoff (control practices for each activity are identified in the Water Pollution I Control Drawings (WPCD5) and/or in Sections 500.3.4 through 500.3.9: Vehicle fluids, including oil, grease, petroleum, and coolants Asphaltic emulsions associated with asphalt-concrete paving operations Cement materials associated with PCC concrete paving operations, drainage I structures, median barriers, and bridge construction I . Base and sub base material Joint and curing compounds I • Concrete curing compounds I . Paints Sandblasting materials I • Mortar mix Raw landscaping materials and wastes (topsoil, plant materials, herbicides, I fertilizers, mulch, pesticides) I . BMP materials (sandbags, liquid copolymer) . PCC rubble I . Masonry block rubble TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-2 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 . General litter . Dust Construction activities that have the potential to contribute sediment to storm water discharges include: Clear and grub operations Grading operations Utility excavation operations Sandblasting operations Landscaping operations Paving operations Washing down of equipment Any construction activity other than those listed above shall be maintained in accordance with the general intent of this SWPPP. Attachment C lists all Best Management Practices (BMPs) that have been selected for implementation in this project. Implementation and location of BMPs are shown on the WPCDs in Attachment B. Narrative descriptions of BMPs to be used during the project are listed by category in each of the following SWPPP sections. Attachment Q includes a list; and/or copies of the fact sheets of all the BMPs selected for this project. 50 IV. 3.2 Existing (pre-construction) Control Measures The following are existing (pre-construction) control measures encountered within the I project site: None for this project site. Existing site erosion control features are to remain in place until the end of the construction process. Any modifications or changes to the site that affect these features shall be fully expressed in the plans provided, and should be followed as closely as possible to eliminate the erosion due to modification or removal of such features. TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-3 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I I I I 1 I I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, Cl 03-06 1 500.3.3 Nature of Fill Material and Existing Data Describing the Soil Sedimentary formational units underlie site fills/topsoils at the property. The sedimentary ' units typically consist of fine to medium sandstone found in a general blocky and well- cemented condition. A thin veneer of topsoil overlies site Terrace Deposits. Topsoils consist of silty to clayey sand found in a general moist and blocky condition. Old fill soil I occupies the original canyon terrain at the eastern margin of the site. Existing fill soils may reach more than 30 feet in thickness and consist of sands and clays. Asphalt and concrete I debris up to 2 feet in diameter comprising up to 50% of the fill were encountered below 10 feet. Site existing fills and topsoils are not suitable for support of new fills, structures and improvements in their present condition. Natural groundwater is not expected to impact I project grading or the long-term stability of the developed site. (Vinje & Middleton Engineering, Inc., Job No 03-236-P, sites Conditions listed from the Preliminary Geotechnical Investigation May 22, 2003.) I Existing site features that, as a result of past usage, may contribute pollutants to storm water (e.g., toxic materials that are known to have been treated, stored, disposed, spilled, or leaked onto the construction site) include: I NS-3, Old AC Paving to be removed as necessary per the project plans. The use of farming related chemicals has left detectable amounts of toxic materials in the soil. According to the Modified Phase 1 Environmental Site I Report prepared by Vinje & Middleton Engineering, it was estimated that roughly 1000 cubic yards of soil are impacted with elevated levels of I organochlorine pesticides, which potentially pose inhalation and exposure concerns. The report recommends that the affected areas be excavated to a depth of one foot below the surface and then incorporated into the fill material (existing I on site) during re-grading of the eastern boundary. Furthermore, it is stated that the soil must be heavily diluted with water to reduce fugitive dust. It is also suggested that this operation be done during morning hours, as winds will be I calm. Lastly, that a member of Vinje & Middleton be present during removal, so as to collect samples for analysis, in order to confirm adequate removal of the I contaminated soil. Remove all existing debris from site prior to the commencement of installing erosion I control measures, to ensure they do not contribute to site pollution. 500.3.4 Erosion Control I Erosion control, also. referred to as soil stabilization, consists of source control measures that are designed to prevent soil particles from detaching and becoming transported in TRANS WEST HOUSING, INC. Section 500 - 9968 HIBERT STREET, SUITE 102 Page 500-4 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 1 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) - Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 I storm water runoff. Erosion control BMPs protect the soil surface by covering and/or binding soil particles. This project will incorporate erosion control measures required by the contract documents, and other measures selected by the- Contractor. This project will I implement the following practices for effective temporary and final erosion control during construction: 1 1) Preserve existing vegetation where required and when feasible. ' 2) Apply temporary erosion control to remaining active and non-active areas as required by the California Stormwater BMPs Handbook - Construction, and the contract documents. Reapply as necessary to maintain effectiveness. I 3) Implement temporary erosion control measures at regular intervals throughout the defined rainy season to achieve and maintain the contract's disturbed soil area I requirements. Implement erosion control prior to the defined rainy season. - Stabilize non-active areas as soon as feasible after the cessation of construction - I activities. - Control erosion in concentrated flow paths by applying erosion control blankets, erosion control seeding, and lining swales as required in the contract documents. Apply seed to areas deemed substantially complete by the Owner during the I defined rainy season. - - At completion of construction, apply permanent erosion control to all remaining 1 disturbed soil areas. Sufficient erosion control materials will be maintained on-site to allow implementation in I conformance with Permit requirements and described in this SWPPP. This includes implementation requirements for active areas and non-active areas that require I deployment before the onset of rain. Implementation and locations of temporary erosion control BMPs are shown on the Water I Pollution Control Drawings (WPCDs) in Attachment B and/or described in this section. The BMP Consideration Checklist in Attachment C indicates the BMPs that will be implemented to control erosion on the construction site; these are: - I . EC-1, Scheduling EC-2, Preservation of Existing Vegetation - - EC-4, Hydroseeding TRANS WEST HOUSING, INC. - - - Section 500 9968 HIBERT STREET, SUITE 102 Page 500-5 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 1 9/26/2006 - Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I . EC-9, Earth Dikes and Drainage Swales I . . EC-10, Velocity Dissipation Devices. Implementation of Erosion Control BMPs I . BMPs will be deployed in a sequence to follow the progress of grading and construction. As the locations of soil disturbance change, erosion and I sedimentation controls will be adjusted accordingly to control storm water runoff at the downgrade perimeter and drain inlets. BMPs will be mobilized as follows: 1 Year-round: . The Storm Water Pollution Prevention Manager (SWPPM) will monitor weather I using National Weather Service reports to track conditions and alert crews to the onset of rainfall events. I . Disturbed soil areas will be stabilized with temporary erosion control or with permanent erosion control as soon as possible after grading or construction is i complete. During the rainy season: I . Disturbed areas will be stabilized with temporary or permanent erosion control I before rain events. 0 Disturbed areas that are substantially complete will be stabilized with permanent erosion control (soil stabilization) and vegetation (if within seeding window for I seed establishment). I . Prior to forecast storm events, temporary erosion control BMPs will be deployed and inspected. During the non-rainy season: The project schedule will sequence construction activities with the installation, of both erosion control and sediment control measures. The construction schedule will be arranged as much as practicable to leave existing vegetation undisturbed until immediately prior to grading. TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-6 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 1 500.3.5 Sediment Control Sediment controls are structural measures that are intended to complement and enhance the selected erosion control measures and reduce sediment discharges from active construction areas. Sediment controls are designed to intercept and settle out soil particles that have been detached and transported by the force of water. This project will incorporate sediment control measures required by the contract documents, and other measures selected by the Owner/Developer/Contractor. I Sufficient quantities of temporary sediment control materials will be maintained on-site throughout the duration of the project, to allow implementation of temporary sediment I controls in the event of predicted rain, and for rapid response to failures or emergencies, in conformance with other Permit requirements and as described in this SWPPP. This includes implementation requirements for active areas and non-active areas before the I onset of rain. I Implementation and locations of temporary sediment control BMPs are shown on the Water Pollution Control Drawings (WPCDs) in Attachment B. The BMP Consideration Checklist in Attachment C indicates all the BMPs that will be implemented to control sediment on the construction site; these are: SE-1, Silt Fence I . SE-4, Check Dams SE-5, Fiber Rolls SE-6, Gravel Bag Berm SE-7, Street Sweeping and Vacuuming SE-10, Storm Drain Inlet Protection Maintain all site sediment control rigorously. Failure to control sediments will result in failure of future storm systems and pollution of adjacent properties. 500.3.6 Tracking Control The following BMPs have been selected to reduce sediment tracking from the construction site onto private or public roads: SE-7, Street Sweeping and Vacuuming I F1 TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Section 500 Page 500-7 1 I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail .16 (Tabata Subdivision) City of Carlsbad, CT 03-06 TC-1, Stabilized Construction Entrance/ Exit BMPs to Reduce Sediment Tracking Stabilized Construction Entrance/Exit A stabilized construction entrance/ exit will be constructed and maintained at construction site entrances and exits, equipment yard, water filling area for water trucks, and project office location, as shown on the site map. The site entrance/ exit will be stabilized to reduce tracking of sediment as a result of construction traffic. The entrance will be designated and graded to prevent runoff from leaving the site. Stabilization material will be 3 to 6-inch aggregate. The entrance will be flared where it meets the existing road to provide an adequate turning radius. During -dirt-hauling activities that extend over a two- week time period, a site entrance/ exit will be installed to reduce tracking of sediment. Entrance/Outlet Tire Wash An entrance/ outlet tire wash station will be used to ensure that sediment tracking to public streets is minimized. Road Cleaning BMPs - Street Sweeping and Vacuuming Road sweeping and vacuuming will occur during soil hauling and as necessary to keep street surfaces clear of soil and debris. Washing of sediment tracked onto streets into storm drains will not occur. 500.3.7 Wind Erosion Control The following BMPs have been selected to control dust from the construction site: WE-1, Wind Erosion Control Dust Control Potable water will be applied to disturbed soil areas of the project site to control dust and maintain optimum moisture levels for compaction. The water will be applied using water trucks. Water applications will be concentrated during the embankment construction operations. TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-8 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I El I I I I I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 BMP WE-1, Wind Erosion Control, and BMP NS-1, Water Conservation Practices, will be implemented to provide dust control and prevent discharges from dust control activities and water supply equipment. Water application rates will be minimized as necessary to prevent runoff and ponding and water equipment leaks will be repaired immediately. During windy conditions (forecast or actual wind conditions of approximately 25 mph or greater), dust control will be applied to disturbed areas, including haul roads, to adequately control wind erosion. BMP WM-3, Stockpile Management, using silt fences and plastic covers will be implemented to prevent wind dispersal of sediment from stockpiles: 500.3.8 Non-Storm Water Control An inventory of construction activities and potential non-storm water discharges is provided in Section 5.3.1. The BMP Consideration Checklist in-Attachment C and the following list indicates the BMPs that have been selected to control non-storm water pollution on the construction site. Implementation and locations of some non-storm water control BMPs are shown on the Water Pollution Control Drawings (WPCDs) in Attachment B. A narrative description of each BMP follows. NS-1, Water Conservation Practices NS-3, Paving and Grinding Operations NS-7, Potable Water/ Irrigation NS-8, Vehicle and Equipment Cleaning I . NS-10, Vehicle and Equipment Maintenance NS-12, Concrete Curing NS-13, Concrete Finishing Illicit Connection/Illegal Discharge Detection and Reporting The Contractor will implement BMP NS-6, Illicit Connection/ Illegal Discharge Detection and Reporting throughout the duration of the project; I TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 Section 500 Page 500-9 I 9/26/2006 Li I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 Paving Operations Paving locations and adjacent storm drain inlets are shown on the WPCD. Paving I operations will generally be conducted as shown on the project schedule in Section 300.4. BMP NS-3, Paving and Grinding Operations, will be implemented to prevent I paving materials from being discharged off-site. Covers will be placed over each inlet adjacent to paving operations. The covers Will consist of scrap carpeting placed over, and tucked under, each inlet grate. Following paving operations, the area will be I swept, inlet covers will be removed, and the inlets will be inspected for paving materials. I Vehicle and Equipment Operations Several types of vehicles and equipment will be used on-site throughout the project, I including graders, scrapers, excavators, loaders, paving equipment, rollers, trucks and trailers, backhoes, forklifts, generators, compressors, and traffic control equipment. I BMPs NS-9, Vehicle and Equipment Fueling, and NS-10, Vehicle and Equipment Maintenance will be utilized to prevent discharges of fuel and other vehicle fluids. Except forconcrete washout, which is addressed in Section 500.3.8, vehicle cleaning will I not be performed on-site. All self-propelled vehicles will be fueled off-site or at the temporary fueling area. Fuel trucks, each equipped with absorbent spill clean-up materials, will be used for all on- site fueling, whether at the temporary fueling area or for mobile fueling elsewhere on the site. Drip pans will be used for all mobile fueling. The fueling truck will be parked in the fueling area for overnight storage. 1 . Drip pans or absorbent pads will be used for all vehicle and equipment maintenance activities that involve grease, oil, solvents, or other vehicle fluids. All vehicle maintenance and mobile fueling operations will be conducted at least 50 feet I away from operational inlets and drainage -facilities and on a level graded area. 1 500.3.9 Waste Management and Materials Pollution Control An inventory of construction activities, materials, and wastes is provided in Section 5.3.1. The BMP Consideration Checklist in Attachment C and the following list indicates the BMPs that have been selected to handle materials and control construction site wastes. A narrative description of each BMP follows. . WM-i, Material Delivery and Storage WM- 2, Material Use I I TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Section 500 Page 500-10 I i I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 26 (Tabata Subdivision) City of Carlsbad, CT 03-06 1 . WM-3, Stockpile Management WM-4, Spill Prevention and Control I . WM-5, Solid Waste Management I . WM-7, Contaminated Soil Management WM-8, Concrete Waste Management 1 . WM-9, Sanitary/Septic Waste Management I Material Delivery, Storage, and Use . In general, BMPs WM-1 and WM-2 will be implemented to help prevent discharges of I . construction materials during delivery, storage, and use. The general material storage area will be located in the Contractor's yard as shown on the WPCD. A sandbag barrier (BMP SE-8) will be provided around the storage area to prevent run-on from adjacent I areas. Two types of storage/ containment facilities will be provided within the storage area to minimize storm water contact with construction materials. Very large items, such as light standards, framing materials, and stockpiled lumber, will be stored in the open in the general storage area. Such materials will be elevated with I wood blocks to minimize contact with run-on. Spill clean-up materials, material safety data sheets, a material inventory, and I emergency contact numbers will be maintained and stored in the southern shipping container. I Stockpile Management BMPs WM-3, Stockpile Management, will be implemented to reduce or eliminate I pollution of storm water from stockpiles of soil and paving materials such as portland cement concrete (FCC) rubble, asphalt concrete (AC), asphalt concrete rubble, aggregate base, aggregate subbase, pre-mixed aggregate, and asphalt minder (so called "cold mix" I asphalt). Stockpiles will be surrounded with sediment controls (SE-5, Fiber Rolls or SE- 6, Gravel Bag Berm). Spill Prevention and Control . BMP WM-4, Spill Prevention and Control, will be implemented to contain and clean-up I spills and prevent material discharges to the storm drain system. Spill prevention is I TRANS WEST HOUSING, INC. . Section 500 9968 FIlBERT STREET, SUITE 102 Page 500-11 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 I . 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I also discussed above in Material Delivery, Storage, and below in the following waste management and equipment maintenance sections. I Waste Management I . BMP WM-5, Solid Waste Management will be implemented to minimize storm water contact with waste materials and prevent waste discharges. Solid wastes will be loaded directly into trucks for off-site disposal. When on-site storage is necessary, solid wastes I . will be stored in watertight dumpsters in the general storage area of the Contractors yard. Dumpster locations are shown on the WPCD. AC and FCC rubble will be stockpiled in the general storage area and will be surrounded with sediment controls ' (SE-6, Gravel Bag Berm) and covered when necessary. Solid waste, including rubble stockpiles, will be removed and disposed off-site at least weekly. A licensed disposal I company will provide solid waste disposal services. Concrete Residuals and Washout Wastes I . BMP WM-8, Concrete Waste Management, will be implemented and a below grade concrete washout facility will be constructed and maintained at the contractor's yard as shown on the WPCD. All excess concrete and concrete washout slurries will be I discharged to the washout facility for drying. The minimum-sized washout, at 10 ft x 10 ft x 3.3 ft deep, will provide more than sufficient volume to contain concrete washout I wastes and waste collected from concrete saw-cutting operations, discussed below. BMP maintenance, waste disposal, and BMP removal will be conducted as described in WM-8. Dried-off concrete will be used as fill material if permitted by the City of I Carlsbad and the soils engineer. c Concrete waste solids/liquids will be removed and disposed of as required by WM-8. I Sanitary and Septic Wastes . • The Contractor will implement BMP WIvl-9, Sanitary and Septic Waste Management, and portable toilets will be located and maintained at the Contractor's yard for the duration of the project. Specific locations are shown on the WPCD. A licensed operator will provide weekly maintenance each week and wastes will be disposed off-site. The toilets will be located away from concentrated flow paths and traffic flow. All precautions not listed above are to be taken in order to minimize any pollution from waste material, equipment maintenance/ storage, and general site maintenance. Products such as pesticides, oils and fuels shall be located per the plans, no exceptions. I TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-12 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 - I 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 500.3.10 Cost Breakdown for Water Pollution Control A cost breakdown, itemizing the contract lump sum for water pollution control, will be prepared by the erosion control contractor. The erosion control contractor has not been retained by the owner at this time. Prior to the start of construction the itemized breakdown can be obtained from the hired contractor. The cost breakdown reflects the items of work, quantities and costs for BMPs shown in the SWPPP, except for those construction site BMPs and permanent BMPs that are shown on the project plans and for which there is a contract item of work. 500.4 Water Pollution Control Drawings (WPCDs) 1 The Water Pollution Control Drawings can be found in Attachment B of the SWPPP. i 500.5 Construction BMP Maintenance, Inspection, and Repair Inspections will be conducted as follows: I . Prior to a forecast storm I . . after a rain event that causes runoff from the construction site u at 24-hour intervals during extended rain events I . weekly during the rainy season I .. at any other time(s) Or intervals of time specified in the contract documents Completed inspection checklists will be submitted to the RE within 24 hours of inspection. Copies of the completed checklists will be kept with the SWPPP. A tracking or follow-up procedure shall follow 'any inspection that identifies deficiencies in I BMPs. A program for Maintenance, Inspection and Repair of BMPs is shown in Attachment G. 1 500.6 Post-Construction Storm Water Management I 500.6.1 Post-Construction Control Practices The following are the post-construction BMPs that are to be used at this construction site I after all construction is complete: SD-10, Site Design & Landscape Planning I - I TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Section 500 Page 500-13 I I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, Cl 03-06 I . SD-12, Efficient Irrigation I . SD-13, Storm Drain Signage SE-7, Street Sweeping and Vacuuming I I MP-40, Media Filter I . EC-10, Outlet protection/ velocity dissipation devices at all culvert outlets. Train maintenance personal to perform routine measures such as trash and I debris cleanup, vegetation management, and waste material disposal. Explore using less toxic, more environmentally friendly products on site to reduce or eliminate pollution source I 500.6.2 Operation/Maintenance after Project Completion The post-construction BMPs that are described above will be funded and maintained by the subdivision's HOA (Home Owner's Association) and enforced through the project's I CC&R's. Any neglect of post construction BMPs may result in system failure. It is recommended that a program be set up and employees trained to enforce and maintain the site BMPs. 500.7. Training I Section 300.5 shows the name of the Owner/Developer/Contractor's Storm Water I Pollution Prevention Manager (SWPPM). This person has received the.following training: SC-1, Housekeeping practices. I . Two (2) day construction storm water management course given by the County of Los Angeles Storm Water Program or equivalent course. I . Attendance at IECA 3 day conference I On-going formal training sessions will be selected from the following organizations: City of Los Angeles Storm Water Program I . County of Los Angeles Storm Water Program State of California Regional Water Quality Control Board I . IECA, ABAG and/or AGC sponsored training TRANS WEST HOUSING, INC. . . Section 500 9968 HIBERT STREET, SUITE 102 Page 500-14 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 1 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 USEPA sponsored training Recognized municipal stakeholder organizations throughout California Informal training, in the form of tailgate meetings, will be conducted monthly (or as needed during rain events) and will address the following topics: Erosion Control BMPs Sediment Control BMPs . Non-Storm Water BMPs Waste Management & Materials Pollution Control BMPs Emergency Procedures specific to the construction site storm water mgmt. The training log containing monitoring and recordkeeping procedures is shown in Attachment I. This SWPPP was prepared by Excel Engineering. I 500.8 List of Subcontractors I All contractors and subcontractors will be notified of the requirement for storm water management measures during the project. A list of contractors will be maintained and included in the SWPPP. If subcontractors change during the project, the list will be I updated accordingly. The subcontractor notification letter and log is included in the SWPPP as Attachment J. I 500.9 Other Plans/Permits Attachment N includes copies of other local, state, and federal plans and permits. Following is a list of the plans and permits included in Attachment N: State Water Resources Control Board (SWRCB) Order No. 99-08-DWQ, National Pollutant Discharge Elimination System (NPDES) General Permit No. CAS000002, Waste Discharge Requirements (WDRs) for Discharges of Storm Water Runoff Associated with Construction Activity. I I I TRANS WEST HOUSING, INC. Section 500 9968 HIBERT STREET, SUITE 102 Page 500-15 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 I 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I Section 600 Monitoring Program and Reports 1 600.1 Site Inspections I The Owner/Developer/Contractor will inspect the site prior to a forecast storm, after a rain event that causes runoff from the construction site, at 24-hour intervals during extended rain events, and as specified in the contract documents. The results of all I inspections and assessments will be documented, a copy shall be provided to the Owner/Developer/Contractor within 24 hours of the inspection, and copies of the completed inspection checklists will be maintained with the SWPPP. Site inspections I conducted for monitoring purposes will be performed using the inspection checklist shown in Attachment H. The Inspector information is pending right now and will be included I upon the award of contract. The name(s) and contact number(s) of the assigned inspection personnel are listed below, and shall be included upon award of the contract: Assigned inspector: Contact phone: 1 600.2 Non-Compliance Reporting If a discharge occurs or if the project receives a written notice of non-compliance, the• Contractor will immediately notify the Owner/ Developer; will file a• written report to the Owner/ Developer within 7 days of the discharge or notice; and will file a written report to the Regional Water Quality Control Board (RWQCB) within 30 days or identification of non-compliance. Corrective measures will be implemented immediately following the ' discharge, notice or order. A sample Notice of Non-Compliance (NONC) form is provided in Attachment K. All discharges will be documented on a Discharge Reporting Log using the example form in Attachment T. I The report to the Owner/ Developer and to the RWQCB will contain the following items: I I The date, time, location, nature of operation, and type of, unauthorized discharge, including the cause or nature of the notice or order, I • The control measures (BMPs) deployed before the discharge event, or prior to receiving notice or order, The date of deployment and type of control measures (BMPs) deployed after the discharge event, or after receiving the notice or order, including additional measures installed or planned to reduce or prevent re-occurrence, and I TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-1 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I • An implementation and maintenance schedule for any affected BMPs 1 600.3 Record Keeping and Reports Records shall be retained for a minimum of three years for the following items: 1 u Site inspections Compliance certifications Discharge reports Approved SWPPP document and amendments 600.4 Sampling and Analysis Plan for Sediment This project does not have the potential to discharge directly to a water body listed as impaired due to Sedimentation/ Siltation pursuant to Clean Water Act, Section 303(d). However, downstream of the project, the Pacific Ocean Shoreline is listed as impaired with I bacteria and Batiquitos Lagoon, is listed as an impaired body for phosphorus. I 600.4.1 Scope of Monitoring Activities This project does not discharge directly into the Pacific Ocean Shoreline, a water body listed as impaired, with an impairment of bacteria. This Sampling and Analysis Plan (SAP) has been prepared pursuant to the requirements of the General Permit (including Resolution 2001-046). The SAP describes the sampling and analysis strategy and schedule I for monitoring Sedimentation and Siltation in the 303(d) listed water body and potential increases in the Sedimentation and Siltation levels caused by storm water discharges from the project site. I The project does receive run-on with the potential to combine with storm water-that discharges indirectly to the 303(d) listed water body at the following locations, as shown on the WPCDs in Attachment B: The northeast corner of the project site. 600.4.2 Monitoring Strategy I Sampling Schedule I Upstream, downstream, discharge, and run-on samples, if applicable, shall be collected for Sedimentation and or Siltation during the first two hours of discharge from rain events that result in a direct discharge from the project site to the Batiquitos Lagoon/ Pacific Ocean I Shoreline. Samples shall be collected during daylight hours (sunrise to sunset) and shall be I TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-2 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 collected regardless of the time of the year, status of the construction site, or day of the week. All storm events that occur during daylight hours will be sampled up to a maximum of four rain events within a 30-day period. In conformance with the U.S. Environmental Protection Agency definition, a minimum of 72 hours of dry weather will be used to distinguish between separate rain events. Sampling Locations Sampling locations are based on proximity to identified discharge or run-on location(s), accessibility for sampling, personnel safety, and other factors in accordance with the applicable requirements in the General Permit. Sampling locations are shown on the WPCDs and include: A sample location (designated number 1) is upstream of all direct discharge from the construction site for the collection of a control sample to be analyzed for the prevailing condition of the receiving water without any influence from the construction site. The control sample will be used to determine the background levels of Sedimentation/ Siltation in the 303(d) listed water-body upstream of the project, if any. Sample location number 1 is locatedat the northeast corner of the project site. A sample location (designated number 2) is immediately downstream from the last point of direct discharge from the construction site for the collection of a sample to be analyzed for potential increases in Sedimentation/ Siltation in the 303(d) listed water body caused by' the storm water discharged from the project, if any. Sample location number 2 is located directly downstream of the storm drain outf all. One' sampling location(s) (designated number(s) 1) has been identified for the collection of samples of run-on to the project site with the potential to combine with discharges from the construction site in other than MS4 to the 303(d) water body. These samples will identify potential Sedimentation/ Siltation that originates off the project site and contributes to direct storm water discharges from the construction site to the 303(d) listed water body. Sample location number 1 is located at the northeast corner of the project site. TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 ' Page 600-3 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I I I I 1 I LII I I I LI] I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision)• I City of Carlsbad, CT 03-06 1 600.4.3 Monitoring Preparation Samples on the project site will be collected by the following Contractor sampling I personnel: This information will be provided at award of contract. I Name/Telephone Number: I Name/Telephone Number: Alternate(s)/ Telephone I Number: Alternate(s)/ Telephone i Number: Prior to the rainy season, all sampling personnel and alternates will review the SAP. I Qualifications of designated Contractor personnel describing environmental sampling training and experience are provided in Attachment I. An adequate stock of supplies and equipment for monitoring Sedimentation/ Siltation will be available on the project site prior to a sampling event. Monitoring supplies and I equipment will be stored in a cool-temperature environment that will not come into contact with rain or direct sunlight. Sampling personnel will be available to collect samples in I accordance with the sampling schedule. Supplies maintained at the project site will include, but will not be limited to, surgical I gloves, sample collection equipment, coolers, appropriate number and volume of sample bottles, identification labels, re-sealable storage bags, paper towels, personal rain gear, ice, Sampling Activity Log forms, and Chain of Custody (COC) forms. The Contractor will I obtain and maintain the field-testing instruments, as identified in Section 600.4.5, for analyzing samples in the field by Contractor sampling personnel. Safety practices for sample collection will be in accordance with the contractor health and safety plan for the I project to be provided at the time of the award of the contract.. Samples on the project site will be collected by the following: Unknown at this time but will be provided upon award of contract. Company Name: 1 Address: TRANS WEST HOUSING, INC. Section 600 I 9968 HIBERT STREET, SUITE 102 Page 600-4 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 1 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 I Telephone Number: 1 Point of Contact: I Qualifications of designated Contractor personnel describing environmental sampling training and experience are provided in Attachment I. I SWPPM will contact: unknown at this time, to be determined upon award of contract, 48 hours prior to a predicted rain event to ensure that adequate sample collection personnel, I supplies and field test equipment for monitoring Sedimentation/ Siltation are available and will be mobilized to collect samples on the project site in accordance with the sampling schedule. I Laboratory or environmental consultant (Unknown: to be determined upon award of contract) will obtain and maintain the field-testing instruments, as identified in Section 1 600.4.5, for analyzing samples in the field by their sampling personnel. 600.4.4 Sample Collection and Handling I Sample Collection Procedures I Grab samples will be collected and preserved in accordance with the methods identified in Table 600-1, "Sample Collection, Preservation and Analysis for Monitoring Sedimentation/ Siltation and/or Turbidity" provided in Section 600.4.5. Only personnel I trained in proper water quality sampling will collect samples. Upstream samples will be collected to represent the condition of the water body up I gradient of the construction site. Downstream samples will be collected to represent the water body mixed with direct flow from the construction site. Samples will not be I .collected directly from ponded, sluggish, or stagnant water. Upstream and downstream samples will be collected using one of the following methods: 1 . Placing a sample bottle directly into the'stream flow in or near the main current upstream of sampling personnel, and allowing the sample bottle to fill completely; I OR, I TRANS WEST HOUSING, INC. . Section 600 I 9968 HIBERT STREET, SUITE 102 Page 600-5 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm 'Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I ' ' City of Carlsbad, CT 03-06 I . Placing a decontaminated or 'sterile' bailer or other 'sterile' collection device in or near the main current to collect the sample, and then transferring the collected water ' to appropriate sample bottles, allowing the sample bottles to fill completely. Run-on samples, if applicable, will be collected to identify potential I sedimentation/ siltation and/or turbidity that originates off the project site and contributes to direct discharges from the construction site to the 303(d) listed water body. Run-on samples will be collected down gradient and within close proximity of,the point of run-on I to the project by pooling or ponding water and allowing the ponded water to spill over into sample bottles directly in the stream of water. To maintain sample integrity and prevent cross-contamination, sampling collection personnel will: I . Wear a clean pair of surgical gloves prior to the collection and handling of each - sample at each location. I . Not contaminate the inside of the sample bottle by not allowing it to come into contact with any material other than the water sample. I : Discard sample bottles or sample lids that have been dropped onto the ground prior to sample collection. 1 . Not leave the cooler lid open for an extended period of time once samples are placed inside. Not touch the exposed end of a sampling tube, if applicable. I . Avoid allowing rainwater to drip from rain gear or other surfaces into sample bottles. I •. Not eat, smoke, or drink during sample collection. Not sneeze or cough in the direction of an open sample bottle. I • Minimize the exposure of the samples to direct sunlight, as sunlight may cause biochemical transformation of the sample to take place. I • Decontaminate sampling equipment prior to sample collection using a TSP-soapy water wash, distilled water rinse, and final rinse with distilled water. I ' • Dispose of decontamination water/soaps appropriately; i.e., not discharge to the storm drain system or receiving water. I TRANS WEST HOUSING, INC. ' ' Section 600 I 9968 HIBERT STREET, SUITE 102 Page 600-6 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 ' I - Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I Sample Handling Procedures I Immediately following collection, sample bottles for laboratory analytical testing will be capped, labeled, documented on a Chain of Custody (COC) form provided by the analytical laboratory, sealed in a re-sealable plastic storage bag, placed in an ice-chilled I cooler, at as near to 4 degrees Celsius as practicable, and delivered within 24 hours to the following California state-certified laboratory: This information will be added upon award of contract. I Laboratory Name: I Address: 1 Telephone Number: Point of Contact: Immediately following collection, samples for field analysis will be tested in accordance with the field instrument manufacturer's instructions and results recorded on the Sampling I Activity Log. Sample Documentation Procedures All original data documented on sample bottle identification labels, Chain of Custody forms, Sampling Activity Logs, and Inspection Checklists will be recorded using waterproof ink. These will be considered accountable documents. If an error is made on an accountable document, the individual will make corrections by lining through the error and entering the correct information. The erroneous information will not be obliterated. ' All corrections will be initialed and dated. Copies of the Sampling Activity Log and Chain of Custody form are provided in Attachment R. Sampling and field analysis activities will I be documented using the following: . Sample Bottle Identification Labels: Sampling personnel will attach an identification label to each sample bottle. At a minimum, the following information will be I recorded on the label, as appropriate: - Project name-Black Rail 16 I - Project number-CT 03-06 - Unique sample identification number and location. [Project Number]-[Six digit sample collection date] -[Location] TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-7 U SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 (Example: 0G5304-081801-Upstream). Quality assurance/ quality control (QA/QC) samples shall be identified similarly using a unique sample number or designation (Example: 0G5304-0818017DUP1). - Collection date/time (No time applied to QA/QC samples) - Analysis constituent. Sampling Activity Logs: A log of sampling events will identify: - Sampling date - Separate times for sample collection of upstream, downstream, run-on, and QA/QC samples recorded to the nearest minute - Unique sample identification number and location - Analysis constituent - Names of sampling personnel' - Weather conditions (including precipitation amount) - Field analysis results - Other pertinent data Chain of Custody (COC) forms: All samples to be analyzed by a laboratory will be accompanied by a COC form provided by the laboratory. Only the sample collectors will sign the COC form over to the lab. COC procedures will be strictly adhered to for QA/QC purposes. Storm Water Quality Construction Inspection Checklists: When applicable, the Contractor's storm water inspector will document on the checklist that samples for- sedimentation/ siltation and/or turbidity were taken during a rain event. 600.4.5 Sample Analysis I Samples will be analyzed for the constituents indicated in Table 600-1, "Sample Collection, Preservation and Analysis for Monitoring Sedimentation/ Siltation". I I I I TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 ' Page 600-8 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I I I 1 1 I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, Cr 03-06 Table 600-1 Sample Collection, Preservation and Analysis for Monitoring Sedimentation/Siltation and/or Turbidity Constituent (1) Analytical Test to be Sample Minimum Sample Bottle Maximum Reporting Method Used? Preservation Sample Holding Limit Volume Time Suspended Sediment ASTM D3977-97 YES 0 NO Store at 4° C Concentration (SSC) (39.2° F) Settleable Solids (SS) EPA 160.5 Z YES 0 NO Store at 4° C mL/L/hr Std Method 2540(f) (39.2° F) Total Suspended EPA 160.2 - YES 0 NO Store at 4° C mg/L Solids (TSS) Std Method 2540(d) (39.2° F) Turbidity EPA 180.1 0 YES 0 NO Store at 4° C NTU Std Method 2130(b) (39.2°F) Notes: (1) Samples shall be analyzed by using methods (b) and (c), or only method (a) ASTM - American Society for Testing and Materials °C - Degrees Celsius OF - Degrees Fahrenheit EPA - U.S. Environmental Protection Agency L -Liter mL/L/hr - Milliliters per liter per hour mg/L - Milligrams per liter mL - Milliliters NTU - Nephelometric Turbidity Unit Std Method - Per the Standard Methods for the Examination of Water and Wastewater, 201h Edition, American Water Works Association TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-9 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 For samples collected for field analysis, collection, analysis and equipment calibration will be in accordance with the field instrument manufacturer's specifications. The following field instrument(s) will be used to analyze the following constituents: I Field Instrument I Constituent I The instrument(s) will be maintained in accordance with manufacturer's instructions. The instrument(s) will be calibrated before each sampling and analysis event. . Maintenance and calibration records will be maintained with the SWPPP. 600.4.6 Quality Assurance/Quality Control For an initial verification of laboratory or field analysis, duplicate samples will be collected at a rate of 10 percent or 1 duplicate .per sampling event. The duplicate sample will be collected, handled, and analyzed using the same protocols as primary samples, and will be collected where contaminants are likely, and not on the upstream sample. A duplicate sample will be collected immediately after the primary sample has been collected. Duplicate samples will not influence any evaluations or conclusions; however, they will be used as a check on laboratory quality assurance; 600.4.7 Data Management and Reporting I A copy of all water quality analytical results and QA/QC data will be submitted to the Owner/Developer within 5 days of sampling (for field analyses) and within 30 days of sampling (for laboratory analyses). Lab reports and COGs will be reviewed for consistency I between lab methods, sample identifications, dates, and times for both primary samples and QA/QC samples. All data, including COC forms and Sampling Activity Logs, shall be kept with the SWPPP document. I 600.4.8 Data Evaluation An evaluation of the water quality sample analytical results, including figures with sample locations, will be submitted to the Owner/Developer/Contractor with the water quality I analytical results and the QA/QC data for every event that samples are collected. Should I TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-10 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 the downstream sample concentrations exceed the upstream sample concentrations, the Storm Water Pollution Prevention Manager or other personnel will evaluate the BMPs, site conditions, surrounding influences (including the run-on sample analysis), and other site factors to determine the probable cause for the increase. I As determined by the data and project evaluation, appropriate BMPs will be repaired or modified to mitigate increases in sediment concentrations in the water body. Any revisions to the BMPs will be recorded as an amendment to the SWPPP. I 600.4.9 Change of Conditions I Whenever SWPPP monitoring, pursuant to Section B of the General Permit, indicates a change in site conditions that might affect the appropriateness of sampling locations, testing protocols will be revised accordingly. All such revisions will be recorded as I amendments to the SWPPP. 600.5 Sampling and Analysis Plan forNon-Visible Pollutants I This Sampling and Analysis Plan (SAP) for Non-Visible Pollutants describes the sampling and analysis strategy and schedule for monitoring non-visible pollutants in storm water I discharges from the project site and off-site activities directly related to the project, in accordance with the requirements of Section B of the General Permit, including SWRCB Resolution 2001-046. Non-visible pollutants include: Bacteria, Phosphorus, nutrients, I organic compounds, oxygen demanding substances, heavy metals, and pesticides. 1 600.5.1 Scope of Monitoring Activities The following construction materials, wastes or activities, as identified in Section 500.3.1, I are potential sources of non-visible pollutants to storm water discharges from the project. Storage, use, and operational locations are shown on the WPCDs in Attachment B. I . Nutrients from fertilizers and pesticides related to landscaping Oxygen demanding substances (i.e. decaying vegetation) . Oils and other automobile related substances I . Hydrocarbons from paved areas i Bacteria from animal waste or sewage spills I The following existing site features, as identified in Section 500.3.3, are potential sources of non-visible pollutants to storm water discharges from the project. Locations of existing site I features contaminated with non-visible pollutants are shown on the WPCDs in Attachment B. I TRANS WEST HOUSING, INC. S Section 600 9968 HIBERT STREET, SUITE 102 Page 600-11 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I I I I I I I I I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) - City of Carlsbad, CT 03-06 Fertilizer and pesticides from previous agricultural site use (to be mitigated and/or removed under the guidelines of the Phase 1 ESA report for the site prepared by Vinje and Middleton Engineering, Inc., Dated June 2, 2005) I The project has the potential to receive storm water run-on with the potential to contribute non-visible pollutants to storm water discharges from the project. Locations of such run-on to the project site are shown on the WPCDs in Attachment B. . The northeast corner of the project site. Sampling for non-visible pollutants will be conducted when (1) a breach, leakage, malfunction, or spill is observed; and (2) the leak or spill has not been cleaned up prior to the rain event; and (3) there is the potential for discharge of non-visible pollutants to surface waters or drainage system. 600.5.2 Monitoring Strategy Sampling Schedule Samples for the applicable non-visible pollutant(s) and a sufficiently large uncontaminated background sample shall be collected during the first two hours of discharge from rain events that result in a sufficient discharge for sample collection. Samples shall be collected during daylight hours (sunrise to sunset) and shall be collected regardless of the time of year, status of the construction site, or day of the week. In conformance with the U.S. Environmental Protection Agency definition, a minimum of 72 hours of dry weather will be used to distinguish between separate rain events. I Collection of discharge samples for non-visible pollutant monitoring will be triggered when any of the following conditions are observed during the required inspections conducted before or during rain events: Materials or wastes containing potential non-visible pollutants are not stored under I watertight conditions. Watertight conditions are defined as (1) storage in a watertight container, (2) storage under a watertight roof or within a building, or (3) protected by temporary cover and containment that prevents storm water contact and runoff from the I storage area. : Materials or wastes containing potential non-visible pollutants are stored under I watertight conditions, but (1) a breach, malfunction, leakage, or spill is observed, (2) the TRANS WEST HOUSING, INC. - Section 600 9968 HIBERT STREET, SUITE 102 Page 600-12 R SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I leak or spill is not cleaned up prior to the rain event, and (3) there is the potential for discharge of non-visible pollutants to surface waters or a storm sewer system. I . An operational activity, including but not limited to those in Section 600.5.1, with the potential to contribute non-visible pollutants (1) was occurring during or within 24 hours I prior to the rain event, (2) applicable BMPs were observed to be breached, malfunctioning, or improperly implemented, and (3) there is the potential for discharge of non-visible pollutants to surface waters or a storm sewer system. I . Soil amendments that have the potential to change the chemical properties, engineering properties, or erosion resistance of the soil have been applied, and there is the potential I for discharge of non-visible pollutants to surface waters or a storm sewer system. . Storm water runoff from an area contaminated by historical usage of the site has been observed to combine with storm water runoff from the site, and there is the potential for I discharge of non-visible pollutants to surface waters or a storm sewer system. I Sampling Locations Sampling locations are based on proximity to planned non-visible pollutant storage, I occurrence or use; accessibility for sampling, personnel safety; and other factors in accordance with the applicable requirements in the Permit. Planned sampling locations are shown on the WPCDs in Attachment B and include the following: I • One sampling locations have been identified for the collection of samples of runoff that drain areas contaminated by historical usage of the site. Sample location number(s) 2 is located downstream of the outfall Of the storm drain system. I m One sampling location has been identified for the collection of samples of run-on to the project site with the potential to combine with discharges being sampled for non-visible I, pollutants. These samples are intended to identify sources of potential non-visible pollutants that originate off the project site. Sample location number(s) 1 is located at the northeast corner of the site. A location has been identified for the collection of an uncontaminated sample of runoff . I as a background sample for comparison with the samples being analyzed for non-visible pollutants. This location was selected such that the sample will not have come in contact with (1) operational or storage areas associated with the materials, wastes, and activities I identified in Section 500.3.1; (2) potential non-visible pollutants due to historical use of the site as identified in Section 500.3.3; (3) areas in which soil amendments that have the TRANS WEST HOUSING, INC. Section 600 I 9968 HIBERT STREET, SUITE 102 Page 600-13 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 1 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I potential to change the chemical properties, engineering properties, or erosion resistance of the soil have been applied; or (4) disturbed soils areas. Sample location number(s) 1 is located at the northeast corner of the project site. If an operational activity or storm water inspection conducted 24 hours prior to or during a I rain event identifies the presence of a material storage, waste storage, or operations area with spills or the potential for the discharge of non-visible pollutants to surface waters or a ' storm sewer system that was an unplanned location and has not been identified on the WPCDs, sampling locations will be selected using the same rationale as that used to identify planned locations. 1 600.5.3 Monitoring Preparation Samples on the project site will be collected by the following Contractor sampling I personnel: Unknown at this time to be provided at the time of the award of the contract. I Name/ Telephone Number: Name/Telephone Number: Alternate(s)/ Telephone I Number: Alternate(s)/ Telephone I Number: Prior to the rainy season, all sampling personnel and alternates will review the SAP. I Qualifications of designated Contractor personnel describing environmental sampling training and experience are provided in Attachment I. I An adequate stock of monitoring supplies and equipment for monitoring non-visible pollutants will be available on the project site prior to a sampling event. Monitoring supplies and equipment will be stored in a cool-temperature environment that will not I come into contact with rain or direct sunlight. Sampling personnel will be available to collect samples in accordance with the sampling schedule. I Supplies maintained at the project site will include, but are not limited to, surgical gloves, sample collection equipment, coolers, appropriate number and volume of sample bottles, I identification labels, re-sealable storage bags, paper towels, personal rain gear, ice, Sampling Activity Log forms, and Chain of Custody (COC) forms. The Contractor will obtain and maintain the field-testing instruments, as identified in Section 600.5.6, for I analyzing samples in the field by Contractor sampling personnel. I TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-14 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 Safety practices for sample collection will be in accordance with the contractor health and I safety plan for the project to be provided at the time of the award of the contract. Samples on the project site will be collected by the following: unknown at this time, will be determined at the time of the award of the contract: Company Name: I Address: I Telephone Number: i Point of Contact: Qualifications of designated Contractor personnel describing environmental sampling I training and experience are provided in Attachment I. - SWPPM will contact a laboratory or environmental consultant not known at this time, who will be determined at the time of the award of the contract, 48 hours prior to a predicted rain event and if one of the triggering conditions is identified during an inspection before, I during, or after a storm event to ensure that adequate sample collection personnel, supplies and field test equipment for monitoring non-visible pollutants are available and will be mobilized to collect samples on the project site-in accordance with the sampling schedule. I A laboratory or, environmental consultant not known at this time, who will be determined at the time of the award of the contract will obtain and maintain the field-testing I instruments, as identified in Section 600.5.6, for analyzing samples in the field by their sampling personnel. - 1 600.5.4 Analytical Constituents Identification of Non-Visible Pollutants I Table 600-2 lists the specific sources and types of potential non-visible pollutants on the project site and the applicable water quality indicator constituent(s) for that pollutant. I S E TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-15 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Storm Water Pollution Prevention Plan (SWPPP) - Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I Table 600-2 Potential Non-Visible Pollutants and Water Quality Indicator Constituents I Pollutant Source Pollutant Water Quality Indicator Constituent I Paving operations Hydrocarbons Animal waste or Bacteria sewage spills I Landscaping Nutrients from fertilizers and. pesticides I Oxygen demanding Decaying substances vegetation I Vehicle Batteries Lead, Sulfate or pH I 600.5.5 Sample Collection and Handling I Sample Collection Procedures I Samples of discharge will be collected at the designated sampling locations shown on the WPCDs for observed breaches, malfunctions, leakages, spills, operational areas, soil amendment application areas, and historical site usage areas that triggered the sampling I. event. Grab samples will be collected and preserved in accordance with the methods identified in I the Table 600-3, "Sample Collection, Preservation and Analysis for .Monitoring Non-Visible Pollutants," provided in Section 600.5.6. Only personnel trained in proper water quality I .sampling will collect samples. . Samples will be collected by placing a separate lab-provided sample container directly into I a stream of water down gradient and within close proximity to the potential non-visible pollutant discharge location. This separate lab-provided sample container will be used to collect water, which will be transferred to sample bottles for laboratory analysis. The up I gradient and uncontaminated background samples shall be collected first prior, to collecting the down gradient to minimize cross-contamination. The sampling personnel will collect the water up gradient of where they are standing. Once the separate lab-j. I TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-16 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 - I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I provided sample container is filled, the water sample will be poured directly into sample bottles provided by the laboratory for the analyte(s) being monitored. To maintain sample integrity and prevent cross-contamination, sampling collection personnel will: I : Wear a clean pair of surgical gloves prior to the collection and handling of each sample at each location. I . Not contaminate the inside of the sample bottle by not allowing it to come into contact with any material other than the water sample. I . Discard sample bottles or sample lids that have been dropped onto the ground prior to sample collection. I . Not leave the cooler lid open for an extended period of time once samples are placed inside. I . Not sample near a running vehicle where exhaust fumes may impact the sample. I . Not touch the exposed end of a sampling tube, if applicable. Avoid allowing rainwater to drip from rain gear or other surfaces into sample bottles. I . Not eat, smoke, or drink during sample collection. I . Not sneeze or cough in the direction of an open sample bottle. Minimize the exposure of the samples to direct sunlight, as sunlight may cause I biochemical transformation of the sample to take place. - . Decontaminate sampling equipment prior to sample collection using a TSP-soapy water I wash, distilled water rinse, and final rinse with distilled water. Dispose of decontamination water/soaps appropriately; i.e., not discharge to the storm drain system or receiving water. Sample Handling Procedures I Immediately following collection, sample bottles for laboratory analytical testing will be capped, labeled, documented on a Chain of Custody form provided by the analytical laboratory, sealed in a re-sealable storage bag, placed in an ice-chilled cooler, at as near to 4 degrees Celsius as practicable, and delivered within 24 hours to the following California TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-17 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 I state-certified laboratory: Unknown at this time, to be determined at the time of the award of the contract. I Laboratory Name: Address: I Telephone Number: Point of Contact: I Immediately following collection, samples for field analysis will be tested in accordance with the field instrument manufacturer's instructions and results recorded on the Sampling i Activity Log. Sample Documentation Procedures I All original data documented on sample bottle identification labels, Chain of Custody forms, Sampling Activity Logs, and Inspection Checklists will be recorded using I waterproof ink. These will be considered accountable documents. If an error is made on an accountable document, the individual will make correction's by lining through the error and entering the correct information. The erroneous information will not be obliterated. All corrections will be initialed and dated. Copies of the Sampling Activity Log and Chain of Custody form are provided in Attachment R. I Sampling and field analysis activities will be documented using the following: ' U Sample Bottle Identification Labels: Sampling personnel will attach an identification label to each sample bottle. At a minimum, the following information will be recorded on the label, as appropriate: I Project name - - Project number I - Unique sample identification number and location. [Project Number]-[Six digit sample collection date]-[Location] (Example: 0G5304-081801-In1et472). I Quality assurance/ quality control (QA/ QC) samples shall be identified similarly using a unique sample number or designation (Example: 0G5304-081801-DUP1). I - Collection date/ time (No time applied to QA/ QC samples TRANS WEST HOUSING, INC. Section 600 I 9968 HIBERT STREET, SUITE 102 Page 600-18 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) I City of Carlsbad, Cr 03-06 I - Analysis constituent I . Sampling Activity Logs: A log of sampling events will identify: - Sampling date - Separate times for collected samples and QA/QC samples recorded to the I nearest minute - Unique sample identification number and location - Analysis constituent I . - Names of sampling personnel - Weather. conditions (including precipitation amount) I Field analysis results - Other pertinent data I . Chain of Custody (COC) forms: All samples to be analyzed by a laboratory will be accompanied by a COC form provided by the laboratory. Only the sample collectors will sign the COC form over to the lab. COC procedures will be strictly adhered to for I QA/QC purposes. . Storm Water Quality Construction Inspection Checklists: When applicable, the I Contractor's storm water inspector will document on the checklist that samples for non- visible pollutants were taken during a rain event. 1 600.5.6 Sample Analysis I Samples will be analyzed for the applicable constituents using the analytical methods identified in Table 600-3, "Sample Collection, Preservation and Analysis for Monitoring Non-Visible Pollutants" in this section. I I I I ~1 El TRANS WEST HOUSING, INC. Section 600 I 9968 HIBERT STREET, SUITE 102 Page 600-19 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92.131 9/26/2006 I -. - - - - - - - - - - - - - - - - - Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 Table 600-3 Sample Collection, Preservation and Analysis for Monitoring Non-Visible Pollutants - Constituent Analytical Method Minimum Sample Volume Sample Bottle Sample Preservation Reporting Limit Maximu m Holding Time VOCs-Solvents EPA 8260B 3x40 mL VOA-Glass Store at 4 Degrees C HCI to pH <2 1 microgram/L 14 days SVOCs EPA 8270C lxi L Glass-Amber Store at 4 Degrees C 1 microgram/L 7 days Pesticides/PCBs EPA 8081A/8082 lxi L Glass-Amber Store at 4 Degrees C 1 microgram/L 7 days Herbicides EPA 8151A lxi L Glass-Amber Store at 4 Degrees C Check Lab 7 days BOD EPA 405.1 1x500 mL Polypropylene Store at 4 Degrees C I mg/L 48 Hours COD EPA 410.4 1x250 mL Glass-Amber Store at 4 Degrees C HCI topH<2 5 mg/L 28 Days DO SM 4500-OG 1x250 mL Glass-Amber Store at 4 Degrees C Check Lab 8 Hours pH EPA 150.1 1x100 mL Polypropylene None Unitless Immediat e Alkalinity SM 2320B 1x250 mL Polypropylene Store at 4 Degrees C 1 mg/L 14 Days Metals (Al, Sb, As, Ba, Be, Cd, Ca Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo,Ni, EPA 6010B/7470A . 1x250 mL Se, Na, Th, Va, Zn) Polypropylene. Store at 4 Degrees C HCI to pH<2 0.1 mg/L 6 Months Metals (Chromium VI) EPA 7199 1x500 mL Polypropylene Store at 4 Degrees C . . i microgram/L 24 Hours Notes: TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-20 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Storm Water Pollution Prevention Plan (SWPPP) Black Rail .16 (Tabata Subdivision) I City of Carlsbad, CT 03-06 For samples collected for field analysis, collection, analysis and equipment calibration will I be in accordance with the field instrument manufacturer's specifications. I The following field instrument(s) will be used to analyze the following constituents: I Field Instrument I Constituent I I The instrument(s) will be maintained in accordance with manufacturer's instructions. The instrument(s) will be calibrated before each sampling and analysis event. . Maintenance and calibration records will be maintained with the SWPPP. 600.5. 7 Quality Assurance/Quality Control For an initial verification of laboratory or field analysis, duplicate samples will be collected at a rate of 10 percent or 1 duplicate per sampling event. The duplicate sample will be collected, handled, and analyzed using the same protocols as primary samples. A duplicate sample will be collected at each location immediately after the primary sample has been collected. Duplicates will be collected where contamination is likely, not on the background sample. Duplicate samples will not influence any evaluations or conclusions; however, they will be used as a check on laboratory quality assurance. 600.5.8 Data Management and Reporting A copy of all water quality analytical results and QA/QC data will be submitted to the Owner/ Developer within 5 days of sampling (for field analyses) and within 30 days (for laboratory analyses). Lab reports and COGs will be reviewed for consistency between lab methods, sample identifications, dates, and times for both primary samples and QA/QC samples. All data, including COG forms and Sampling Activity Logs, shall be kept with the SWPPP. 600.5.9 Data Evaluation An evaluation of the water quality sample analytical results, including figures with sample locations, will be submitted to the Owner/Developer with the water quality analytical results and the QA/QC data. I TRANS WEST HOUSING, INC. 9968 HIBERT STREET, SUITE 102 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 Section 600 Page 600-21 I I I I I I I I I Li 1 Storm Water Pollution Prevention Plan (SWPPP) Black Rail 16 (Tabata Subdivision) City of Carlsbad, CT 03-06 Should the runoff/down gradient sample show an increased level of the tested analyte relative to the background sample, the BMPs, site conditions, and surrounding influen c e s I will be assessed to determine the probable cause for the increase. As determined by the site and data evaluation, appropriate BMPs will be repaired or modified to mitigate I discharges of non-visual pollutant concentrations. Any revisions to the BMPs will be recorded as an amendment to the SWPPP. I 600.5.10 Change of Conditions Whenever SWPPP monitoring, pursuant to Section B of the General Permit, indicates a I change in site conditions that might affect the appropriateness of sampling locations or introduce additional non-visible pollutants of concern, testing protocols will be revised accordingly. All such revisions will be recorded as amendments to the SWPPP. I I I I I i I I I I l TRANS WEST HOUSING, INC. Section 600 9968 HIBERT STREET, SUITE 102 Page 600-22 SAN DIEGO, COUNTY OF SAN DIEGO, CA 92131 9/26/2006 I Attachment A I Vicinity Map I CITY OF OCEANSIDE VICINITY MAP CITY OF VISTA 5/7-F CORTE ORC//iO/A CITY OF ENCINITAS NOT TO SCALE I I Attachment B Water Pollution Control Drawings (WPCDs) I Attachment C BMP Consideration Checklist rr CONSTRUCTION SITE BMPs CONSIDERATION CHECKLIST rhe BMPs listed here should be considered for every project. Those BMPs that are not included in the SWPPP must be checked as "Not Used" with a brief statement describing why it is not being used. EROSION CONTROL BMPS BIVIP CONSIDERED CHECK IF CHECK I BMP NOT IF NOT USED, STATE REASON FOR PROJECT USED USED EC-1 Scheduling - X X EC-2 Preservation of x x Existing Vegetation EC-3 Hydraulic Mulch X X Not necessary for this project EC-4 Hydroseeding X X EC-5 Soil Binders X X Not necessary for this project EC-6 Straw Mulch X X Not necessary for this project EC-7 Geotextiles & Mats x X Not necessary for this project EC-8 Wood Mulching X X Hydroseeding will be used in lieu of this BMP EC-9 Earth Dikes & x x Drainage Swales EC-10 VelocityDissipation x x Devices EC-1 1 Slope Drains Not necessary, stormwater will be directed to proposed storm drain systems. EC-12 Streambank Stabilization X X - Not necessary for this project EC-1 3 Polyacrylamide X X Not necessary for this project California Storm Water Quality Handbooks BMP Consideration Checklist Construction January 2003 1 of I Attachment C BMP Consideration Checklist CONSTRUCTION SITE BMPs FF CONSIDERATION CHECKLIST The BMPs listed here should be considered for every project. Those BMPs that are not included in the SWPPP must be checked as "Not Used" with a brief statement describing why it is not being used. SEDIMENT CONTROL BMPs BMP CONSIDERED CHECK IF CHECK IF BMP FOR IF NOT USED, STATE REASON No. BM FOR PROJECT USED USED SE-1 Silt Fence X X SE-2 Sediment Basin X X Not necessary for this project SE-3 Sediment Trap X X Not necessary for this project SE-4. Check Dam X X SE-5 Fiber Rolls X X SE-6 Gravel Bag Berm X X SE-7 Street Sweeping and x Vacuuming SE-8 Sand Bag Barrier X X SE-6, Being used SE-9 Straw Bale Barrier X X Not necessary for this pràject SE 10 Storm Drain Inlet X x - Protection SE-1 1 Chemical Treatment X X Not necessry for this project WINDIIEROSIONLCONTROL BMPs W&1 7 Wind Erosion Control X X TRACKING CONTROL BMPS I Stabilized Construction I - I Entrance/Exit I I TC -2 I Stabilized Construction Roadway I X I X Not necessary for this project - I TC 3 Entrance/Outlet Tire Wash X X Not necessary for this project BMP Consideration Checklist 2 of California Stormwater Quality Handbooks Construction January 2003 Errata 8-04 I Attachnieflt C BMP Consideration Checklist CONSTRUCTION SITE BMPs CONSIDERATION CHECKLIST MPs listed here should be considered for every project. Those BMPs that are not included in the SWPPP must be checked as "Not Used" with a brief statement describing why it is not being used. ZIMANAGEMENTII :]YjI Ps BMP BMP CONSIDERED CHECK IF CHECK IF No. FOR PROJECT USED NOT IF NOT USED, STATE REASON USED NS-1 Water Conservation x x Practices NS-2 Dewatering Operations X X Not necessary for this project NS-3 Paving and Grinding Operations NS-4 Temporary Stream Crossing X X Not necessary for this project NS-5 Clear Water Diversion X X Not necessary for this project NS-6 Illicit Connection/ Discharge X X Not necessary for this project Ns- Potable x x - Water/Irrigation NS 8 Vehicle and Equipment x Cleaning - NS FueIi Vehicle and Equipment ng X X Not necessary for this project NS 10 Vehicle and Equipment Maintenance - NS-1 1 Pile Driving Operations X X Not necessary for this project NS-12 Concrete Curing X X NS-13 Concrete Finishing X X Material and NS-14 Equipment Use Over X X Not necessary for this project Water NS-15 Demolition Adjacent to Water X X Not necessary for this project NS16 Temporary Batch I Plants X X Not necessary for this project California Storm Water Quality Handbooks Construction BMP Consideration Checklist January2003 of 4 Errata 8-04 [I] F1 E] 1 I I I I I 1 Attachment C BMP Consideration Checklist CONSTRUCTION SITE BMPs I F CONSIDERATION CHECKLIST The BMPs listed here should be considered for every project. Those BMPs that are not included in the SWPPP must be checked as "Not Used" with a brief statement describing why it is not being used. JI WASTE MA ijI I WAND MATERIALSPOLLUTIONtCONTROL BMP BMP CONSIDERED CHECK IF CHECK IF NOT IFNOTUSED, No. FOR PROJECT USED USED STATE REASON WM-1 Material Delivery and x xStorage WM-2 Material Use X X WM-3 Stockpile x x Management WM-4 Spill Prevention and x x Control WM- 5 Solid Waste x x Management WM- 6 Hazardous Waste Management X X Not necessary for this project WM - Contaminated Soil x x Management WM - 8 Concrete Waste x x Management WM-9 Sanitary/Septic Waste Management wM10 Liquid Waste Management x x Not necessary for this project I 1 . . California Stormwater Quality Handbooks BMP Consideration Checklist Construction . 4 of January 2003 I . Errata 8-04 Attachment D Computation Sheet for Determining Runoff Coefficients Refer to the Hydrology Study for this project on file with the City of Carlsbad's Engineering Department. Encinitas San Diego County, California DW ArC 0 LCE2 Rr02 (Thflr3r C LV 3 3 A COR.0 lR A COD 35 A CCC B D Me LCD o A , ACE ca 5 fB fn2 4 (7_f Mf C D D ' CfCur,LI (,Hf A CCCAIE 3CC Cr 4,lf dC LCFD D Cf C LV ' D j \ CVE3 - SrrE CrC V \ A LvV5,HrC C. 0324 R3,HVC2'bE IC so - Cr H. V C, _ PCC AVE2 Cr0 - (V 1eV Le 4C C CD hr2 IC- AViI A Mc C302 C \MC A D \ CE CCI C VfA2Q3C C A D \ CbCC DO A CCC yi \ a CCC? D \ dIE CCC Cr30 CCC _JA')11( 9 9Df5CbC 11 CCC CC3 AL,F3 C COB Cr C. fl C CC C -1 ffA In4 LvF3 16 MIC ICC 5 CVC CCC1 5 4 V\ MA Cf C Cie Cf' COG i LVC ie3 AtC CAD Q 4 \ AbC MC C' VCE '1 5' M 33 B /,_,•,JPJ I T. D fE2, % .27 CkA yr.'23'C iSan Diego County Soils Interpretation Study NOW 35 TeE HYDROLOGIC SOIL GROUPS - Runoff rotentaJ ICC0flCVCC•H •. CCCCf CCCr,C High Runoflj "CC Encinitas 33 Group A Group B Group C roup 0 •0'.......... Low Runoff Moderate Very L'ZCC CCC . - - - - - - - - - - - - - - - - - - - - San Diego County Hydrology Manual Section: 3 Date: June 2003 Page: 6 of 26 Table 3-1 RUNOFF COEFFICIENTS FOR URBAN AREAS - Land Use Runoff Coefficient "C" Soil NRCS Elements Elements Undisturbed Natural Terrain (Natural) Permanent Open Space Low Density Residential (LDR) F.E1. Residential, LO DU/A orless Low Density Residential (LDR) Residential, 2.0 DU/A or less Low Density Residential (LDR) 1 Residential, 2.9 DU/A or less Medium Density Residential (MDR) Residential, 4.3 DU/A or less Medium Density Residential (MDR) Residential, 7.3 DU/A or less Medium Density Residential (MDR) Residential, 10.9 DU/A r less Medium Density Residential (MDR) Residential, 14.5 DU/A or less High Density Residential (HDR) Residential, 24.0 DU/A or less High Density Residential (HDR) Residential, 43.0 DU/A Or less Commercial/Industrial (N. Corn) Neighborhood Corhinercial Commercial/Industrial (G. Com) General Commercial Commercial/Industrial (OP. Corn) Office Professional/Commercial Commercial/Industrial (Limited I.) Limited Industrial Commercial/Industrial (General I.) General Industrial %IMPER.A •B -CD 0* 0.20 0.25 0.30 0.35 10 0.27 0.32 0.36 0.41 20 0.34 0.38 0.42 0.46 25 0.38 0.41 0:45 0.49 30 0.41 0.45 0.48 0.52 40 0.48 0.51 0.54 0.57 45 0.52 0.54 0.57 0.60 50 0.55 0.58 0.60 0.63 65 0.66 0.67 0.69 0.71 80 0.76 0.77 0.78 0.79 80 0.76 0.77 0.78 0.79 85 0.80 0.80 0.81 0.82 90 0.83 0.84 0.84 0.85 90 0.83 0.84 0.84 0.85 95 0.87 0.87 0.87 0.87 *The values associated with 0% impervious may be used for direct calculation of ti e runoff coefficient as described in Section 31.2 (representing the pervious runof f coefficient, Cp, for the soil type), or for areas that will remain undisturbed in perpetui :y. Justification must be given that the area will remain natural forever ( e . g . , t h e a r e a is located in Cleveland National Forest). DU/A = dwelling units per acre NRCS = National Resources Conservation Service 3-6 THIS TOPOGRAPHY IMS REFERENCED FROM iRE CITY OF CARL SHAD 295-5 SHEETS 132 AND 143 COPYRIGHTED 1291 HYDROLOGY BASIN OFF-SITE RUN-ON 7 - BASIN 801JND4RY - (TYP) BASIN OFF-SITE If N I I I San Diego County Rational Hydrology Program CIVILCADD/CIVILDESIGN Engineering Software, (c)1991-2004 Version 7.4 Rational method hydrology program based on San Diego County Flood Control Division 2003 hydrology manual Rational Hydrology Study Date: 09/27/06 ------------------------------------------------------------------ CT 03-06, BLACK RAIL 16 100 YEAR POST DEVELOPMENT OFF-SITE RUN-ON, NODE 100 TO 900 ------------------------------------------------------------------ Hydrology Study Control Information Program License Serial Number 4012 I I I I I I.. I I I I ------------------------------------------------------------------ Rational hydrology study storm event year is 100.0 English (in-lb) input data Units used Map data precipitation entered: 6 hour, precipitation(inches) = 2.700 24 hour precipitation(inches) = 4.500 P6/P24 = 60.0% San Diego hydrology manual 'C' values used +++++++++++++++++±++++++++++++++++++-f+++++++++++++++++-f+4-+++++++++. ++++ Process from Point/Station 100.000 to Point/Station 900.000 INITIAL AREA EVALUATION **** Decimal fraction soil group A = 0.000 Decimal fraction soil group B = 0.000 Decimal fraction soil group C = 0.000 Decimal fraction soil group D = 1.000 [LOW DENSITY RESIDENTIAL (2.9 DU/A or Less ) Impervious value, •Ai = 0.250 Sub-Area C Value = 0.490 Initial subarea total flow distance = 589.000(.Ft.) Highest elevation = 383.000(Ft.) Lowest elevation = 320.000(Ft.) Elevation difference = 63.000(Ft.) Slope = 10.696 % INITIAL AREA TIME OF CONCENTRATION CALCULATIONS: The maximum overland flow distance is 100.00 (Ft) for the top area slope value of 10.70 %, in a development type of 2.9 DU/A or Less In Accordance With Figure 3-3 I I I InitialArea Time of Concentration = 4.98 minutes TC= [l.8*(1.1_C)*distance(Et.)^.5)/(% slope'(1/3)] TC= [l.8*(l.1_0.4900)*(100.000.5)/( 10.696(1/3)]= 4.98 Rainfall intensity (I) = 7.129(In/Hr) for a 100.0 year storm Effective runoff coefficient used for area (Q=KC]IA) is C = 0.490 Subarea runoff = 3.074(CFS) Totalinitial stream area = 0.880(Ac.) End of computations, total study area = 0.880 (Ac.) - G) E C.) ° 03 cc - - - - - - - - - - - - - - - - State Water Resources Control Board NOTICE OF INTENT TO COMPLY WITH THE TERMS OF THE GENERAL PERMIT TO DISCHARGE STORM WATER ASSOCIATED WITH CONSTRUCTION ACTIVITY (WQ ORDER No. 99-08-DWQ) I NOI STATUS (SEE INSTRUCTIONS) UIARK ONLY ONE ITEM 1. New Construction 2. El Change of Information for WDID# '9 37 C -3 *0 Name . Contact Person AVIARA BLACK RAIL 16, LLC., ANDLINDQUIST PAUL R. O'BOYLE DEVELOPMENT CO., INC. Mailing Address Title 9.968 HiLBERT ST., SUITE 102 VICE-PRESIDENT City State Zip Phone SAN DIEGO CA 92131 (858) 653-3003 1111. DEVELOPER/CONTRACTOR INFORMATION • Developer/Contractor TRANS WEST HOUSING, INC. . Contact Person PAUL R. O'BOYLE Maihng Address Title 9968 HILBERT ST., SUITE 102 VICE-PRESIDENT City State Zip Phone SAN DIEGO CA 92131 I (858) 653-3003 IV. CONSTRUCTION PROJECT INFORMATION Site/Project Name . Site Contact Person BLACKRAIL16 Physical Address/Location . Latitude Longitude - County NEAR INTERSECTION OF BLACKRAIL RD. AND SAN DIEGO POINSETTIA LN. 33 1170 City (or nearest City) Zip Site Phone Number Emergency Phone Number CARLSBAD 92008 Total size of construction site area: C. Percent of site imperviousness (including rooftops): . 5.2582 Acres . D. Tract Number(s): C.T. 03-06 Before Construction: 0 % Total area to be disturbed: E. Mile Post Marker: N/A 5.08 (96) Acres (% of total _100_1 After Construction: 45 % F. Is the construction site part of a larger common plan of development or sale? 1 G. Name of plan or development: - BLACKRAILI6 YES NO 15l J. Projected construction dates: H. Construction commencement date: 9 I 1 / 06 Complete grading: _jj_/_jj Complete project: 12/1/07 I. % of site to be mass graded: 85 K. Type of Construction (Check all that apply): 1. FXJ Residential 2. El Commercial 3. El Industrial 4. El Reconstruction . 5. El Transportation 6. El Utility Description: SINGLE FAMILY HOMES 7. El Other (Please List): '. BILLING INFORMATION SEND BILL TO: TRANS-WEST HOUSING, INC. Paul R. O'Boyle OWNER as in II. above) ' 9968 HILBERT ST., SUITE 102 (858) 653-3003 DEVELOPER (as irtlll.above) . (858) 653-3001 SAN DIEGO CA 92131 OTHER (enter _information _at_right) I 111. PROPERTY OWNER I I VI. REGULATORY STATUS Has a local agency approved a required erosion/sediment control plan2............................................................................................................................. YES F&I NO Does the erosion/sediment control plan address construction activities such as infrastructure and structures? .................................................................. )IEJ YES 0 NO Name of local agency: CITY OF CARLSBAD Phone: (760)602-2720 Is this project or any part thereof, subject to conditions imposed under a CWA Section 404 permit of 401 Water Quality Certification? ..............................0 YES )tflJ NO If yes, provide details: IVIl. RECEIVING WATER INFORMATION A. Does the storm water runoff from the construction site discharge to (Check all that apply): I , Indirectly to waters of the U.S. (Batiquitos Lagoon) 2 - . Storm drain system Enter owner's name:___ - 3. fl Directly to waters of U.S. (e.g., river, lake, creek, stream, bay, ocean, etc.) B. Name of receiving water: (river, lake, creek, stream, bay, ocean): Batiguitos Lagoon IVIII. IMPLEMENTATION OF NPDES PERMIT REQUIREMENTS STORM WATER POLLUTION PREVENTION PLAN (SWPPP) (check one) A SWPPP has been prepared for this facility and is available for review: Date Prepared: SEPTEMBER23, 2005 Date Amended: tjL 0 A SWPPP will be prepared and ready for review by (enter date): LI A tentative schedule has been included in the SWPPP for activities such as grading, street construction, home construction, etc. MONITORING PROGRAM - FXJ A monitoring and maintenance schedule has been developed that includes inspection of the construction BMPs before anticipated storm events and after actual storm events and is available for review. If checked above: A qualified person has been assigned responsibility for pre-storm and post-storm BMP inspections to identify effectiveness and necessary repairs or design changes ........................................................................... .... ....................... .... )4JYES DO Name: PAUL R.O'BOYLE Phone: (858)653-3003 C. PERMIT COMPLIANCE RESPONSIBILITY A qualified person has been assigned responsibility to ensure full compliance with the Permit, and to implement all elements of the Storm Water Pollution I Prevention Plan including: 1. Preparing an annual compliance evaluation ....................... .......... ................................................. ................. .................................... )LIYES ONO Name: CITYOFCARLSBADINSPECTIONDEPT. Phone: (_760 _)_438 --3891 I 2. Eliminating all unauthorized discharges .... . ............. ... . . .................................... . ............... . ........................ ............................................. .)YES LI NO A. VIIIII I T rvIi'r iu'u rca tmust snow site iocauon in reration to nearest namea streets, Intersections, etc.) Have you included a vicinity map with this submittal? ....................................................................................................................................0 YES LI NO Have you included payment of the annual fee with this submittal? ................................. .................................................................................. .YES [],NO I . CERTIFICATIONS - - "I certify under penalty of law that this document and all attachments were prepared under my direction and supervision in accordance with I a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the P 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 I including the possibility of fine or imprisonment. In additi t the provisions of the permit, including the development and implementation of a Storm Water Pollution Prey itoring Program Plan will be complied with." I ::::::me Date: 4-7.2006 Z -/5 "'7 I 'ENGINEEROFWORK __ ,cc NO452Q) I I EC-2 PRESERVATION OF DAILY EXISTING VEGETATION EC-4 HYDROSEEDING EC-9 EARTH DIKES & DRAINAGE SWALES INSPECT 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 INSPECT 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 EC-10 VELOCITY DISSIPATION DEVICES INSPECT 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 I I El Attachment G I Program for Maintenance, Inspection, and Repair of Construction Site BMPs 1 The contractor shall use the following guidelines for maintenance, inspection1 and repair of BMPs identified in the SWPPP I BEST MANAGEMENT INSPECTION FREQUENCY I n r MAINTENANCE/REPAIR PROGRAM I,S flRRfl. I ..II - rFcMIioDwIr, - - il UiiLWij TEMPORARY EROSION CONTROL BMPs EC-1 SCHEDULING CORRECT SCHEDULE WHEN • N/A CHANGES OCCUR REPAIR FENCING OR STAKING DELINEATING AREAS TO BE PRESERVED INSPECT IRRIGATION, WHERE SEEDS FAIL TO GERMINATE, OR THEY GERMINATE AND DIE, THE AREA MUSTBE RE-SEEDED. a INSPECT CHANNEL LININGS, EMBANKMENTS, AND BEDS OF DITCHES AND BERMS FOR EROSION AND ACCUMULATION OF DEBRIS AND SEDIMENT. REMOVE DEBRIS AND SEDIMENT AND REPAIR LININGS AND EMBANKMENTS AS NEEDED. INSPECT APRON FOR DISPLACEMENT OF THE RIPRAP AND DAMAGE TO THE UNDERLYING FABRIC. REPAIR FABRIC AND REPLACE RIPRAP THAT HAS WASHED AWAY. IF RIPRAP CONTINUES TO WASH AWAY, CONSIDER USING LARGER MATERIAL. INSPECT FOR SCOUR BENEATH THE RIPRAP AND AROUND THE OUTLET. REPAIR DAMAGE TO SLOPES OR UNDERLYING FILTER FABRIC IMMEDIATELY. I I I I I I I I I I I I I AttachtflefltG Maintenance, Inspection and Repair Program The contractor shall use the following guidelines for maintenance, inspection, and repair of BMPs identified in the SWPPP BEST MANAGEMENT INSPECTION FREQUENCY MAINTENANCE/REPAIR PROGRAM PRACTICES (BMPs) (all controls) TEMPORARY SEDIMENT CONTROL BMPs SE-1 SILT FENCE INSPECT PRIOR TO REPAIR UNDERCUT SILT FENCES. FORECAST RAIN, DAILY REPAIR OR REPLACE SPLIT, TORN, DURING EXTENDED RAIN SLUMPING, OR WEATHERED FABRIC. EVENTS, AFTER RAIN SEDIMENT THAT ACCUMULATES EVENTS, WEEKLY DURING SHOULD BE REMOVED WHEN IT THE RAINY SEASON, AND AT REACHES ONE THIRD OF THE TWO-WEEK INTERVALS BARRIER HEIGHT. DURING THE NON-RAINY SEASON INSPECT PRIOR TO SE4 CHECK DAMS FORECAST RAIN, DAILY DURING EXTENDED RAIN REPLACE MISSING ROCK, BAGS, EVENTS, AFTER RAIN BALES, ETC. REPLACE BAGS OR EVENTS, WEEKLY DURING BALES THAT HAVE DEGRADED OR THE RAINY SEASON, AND AT HAVE BECOME DAMAGED. TWO-WEEK INTERVALS SEDIMENT SHOULD BE REMOVED DURING THE NON-RAINY WHEN THE SEDIMENT SEASON ACCUMULATION REACHES ONE- THIRD OF THE BARRIER HEIGHT. INSPECT PRIOR TO SE-5 FIBER ROLLS L FORECAST RAIN, DAILY REPAIR OR REPLACE SPLIT, TORN, DURING EXTENDED RAIN UNRAVELING, OR SLUMPING FIBER EVENTS, AFTER RAIN ROLLS. SEDIMENT SHOULD BE EVENTS, WEEKLY DURING REMOVED WHEN SEDIMENT THE RAINY SEASON, AND AT ACCUMULATION REACHES ONE • TWO-WEEK INTERVALS HALF THE DESIGNATED SEDIMENT DURING THE NON-RAINY STORAGE DEPTH, USUALLY ONE- SEASON - HALF THE DISTANCE BETWEEN THE rr,n r,r 1l Jr rinrr, ne-,I I F. nm -r, ,r I LJ 'Jr I fl rlolrc MULL /\I'lU I I1 tin IAC'II¼IT (DCI I,Ir Of IOrAr'c SE-7 STREET SWEEPING DAILY SE-10 STORM DRAIN INLET PROTECTION INSPECT 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 Attachment G Maintenance, Inspection and.Repair Program of BMPs identified in the SWPPP BEST MANAGEMENT INSPECTION FREQUENCY The contractor shall use the following guidelines for maintenance, inspection, and repair. PRACTICES (BMP s) (all controls) MAINTENANCE/REPAIR PROGRAM SE-6 GRAVEL BAG BERM INSPECT PRIOR TO • RESHAPE OR REPLACE GRAVELTj FORECAST RAIN, DAILY BAGS ASNEEDED. REPAIR DURING EXTENDED RAIN WASHOUTS OR OTHER DAMAGE AS EVENTS, AFTER RAIN NEEDED. SEDIMENT SHOULD BE EVENTS, WEEKLY DURING REMOVED WHEN THE SEDIMENT THE RAINY SEASON, AND AT ACCUMULATION REACHES ONE- TWO-WEEK INTERVALS THIRD OF THE BARRIER HEIGHT. DURING THE NON-RAINY SEASON 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. INSPECT BAGS FOR HOLES, GASHES, AND SNAGS, AND REPLACE BAGS AS NEEDED. CHECK GRAVEL BAGS FOR PROPER ARRANGEMENT AND DISPLACEMENT. W4DEROSION CONTROL BMPs WE-1 DUST,' WIND EROSION INSPECT WEEKLY DURING • CONTROL THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION. TRACKING CONTROL_BMPs TC-1 STABILLIZED INSPECT WEEKLY DURING CONSTRUCTION THE RAINY SEASON AND AT ENTRANCE TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION. I I I I I I I I I I I 1 I I CHECK AREAS PROTECTED TO ENSURE COVERAGE. DUST CONTROL MEASURES REQUIRE FREQUENT, OFTEN DAILY, OR MULTIPLE TIMES PER DAY ATTENTION. REMOVE AGGREGATE, SEPARATE AND DISPOSE OF SEDIMENT IF CONSTRUCTION ENTRANCE/EXIT IS CLOGGED WITH SEDIMENT. CHECK FOR DAMAGE AND REPAIR AS NEEDED. REPLACE GRAVEL MATERIAL WHEN SURFACE VOIDS ARE VISIBLE. I I I I Attachaleflt G Maintenance, Inspection and Repair Program The contractor shall use the following guidelines for maintenance, inspection, and repair of BMPs identified in the SWPPP BEST MANAGEMENT INSPECTION FREQUENCY MAINTENANCE/REPAIR PROGRAM PRACTICES (BMPs) (all controls) NON STORM WATER MANAGEMENT BMPs NS-1 WATER CONSERVATION INSPECT BMPS SUBJECT TO r• —RE PAIR WATER EQUIPMENT AS NEEDED PRACTICES NON-STORMWATER TO PREVENT UNINTENDED DISCHARGES. fl!fl#SI ,nn,-,rr. flfl It '/ tAll III r UILfl/\NLE Lfl\ILT VVr1IL. NON-STORM WATER DISCHARGES ARE OCCURING. I I I UT I I I I I NS-3 PAVING AND GRINDING OPERATIONS NS-7 POTABLE WATER/IRRIGATION NS-8 VEHICLE AND EQUIPMENT CLEANING NS-1O VEHICLE AND EQUIPMENT MAINTENANCE NS-12 CONCRETE CURING NS-13 CONCRETE FINISHING INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY' DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION KEEP AMPLE SUPPLIES OF DRIP PANS OR ABSORBENT MATERIALS ONSITE. MAINTAIN MACHINERY REGULARLY TO MINIMIZE LEAKS AND DRIPS. REPAIR BROKEN WATER LINES AS SOON AS POSSIBLE. MAINTENANCE IS MINIMAL, ALTHOUGH SOME BERM REPAIR MAY BE NECESSARY. REMOVE LIQUIDS AND SEDIMENT AS NEEDED. PROHIBIT EMPLOYEES AND SUBCONTRACTORS FROM WASHING PERSONAL VEHICLES AND EQUIPMENT ON THE CONSTRUCTION SITE. KEEP AMPLE SUPPLIES OF SPILL CLEANUP MATERIALS ONSITE. MAINTAIN WASTE FLUID CONTAINERS IN LEAK PROOF CONDITION. LEAKS SHOULD BE REPAIRED IMMEDIATELY OR THE PROBLEM VEHICLE(S) OR EQUIPMENT SHOULD BE REMOVED FROM THE PROJECT SITE. REPAIR OR REPLACE DAMAGED HOSES AND LEAKY GASKETS AS NEEDED. ENSURE THAT EMPLOYEES AND SUBCONTRACTORS IMPLEMENT APPROPRIATE MEASURES FOR STORAGE, HANDLING, AND USE OF CURING COMPOUNDS. CHECK FOR LEAKS FOR CURE CONTAINERS AND SPRAYING EQUIPMENT U 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, AND FROM THE GENERAL WORK AREA. I Li U I I Attachment G Maintenance, Inspection and Repair Program The contractor shall use the following guidelines for maintenance, inspection, and repair of BMPs identified in the SWPPP INSPECTION FREQUENCY MAINTENANCE/REPAIR PROGRAM (all controls) ,EMENT AND MATERIALS POLLUTION CONTROL BMPs INSPECT WEEKLY DURING I KEEP AN AMPLE SUPPLY OF SPILL THE RAINY SEASON AND AT CLEANUP MATERIALS NEAR THE TWO-WEEK INTERVALS IN STORAGE AREA. KEEP STORAGE AREAS THE NON-RAINY V TO SEASON j CLEAN, WELL ORGANIZED, AND VERIFY CONTINUED BMP EQUIPPED WITH AMPLE CLEANUP SUPPLIES AS APPROPRIATE FOR THE IMPLEMENTATION MATERIALS BEING STORED. REPAIR OR REPLACE PERIMETER CONTROLS, CONTAINMENT STRUCTURES, COVERS, AND LINERS AS NEEDED TO MAINTAIN PROPER FUNCTION. V I 1 BEST MANAGEMENT PRACTICES _(BMPs) WASTE Mi WM-1 MATERIAL DELIVERY/STORAGE LI I Li Fl I INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION INSPECT WEEKLY DURING THE RAINY SEASON AND AT TWO-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP IMPLEMENTATION WM-2 MATERIAL USE WM-3 STOCKPILE MANAGEMENT WM-4 SPILL PREVENTION AND CONTROL WM-5 SOLID WASTE MANAGEMENT WM-7 CONTAMINATED SOIL MANAGEMENT I SPOT CHECK EMPLOYEES AND SUBCONTRACTORS THROUGHOUT THE JOB TO ENSURE APPROPRIATE PRACTICES ARE BEING EMPLOYED. REPAIR AND/OR REPLACE PERIMETER CONTROLS AND COVERS AS NEEDED TO KEEP THEM FUNCTIONING PROPERLY. 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. INSPECT CONSTRUCTION WASTE AREA REGULARLY. ARRANGE FOR REGULAR WASTE COLLECTION. MONITOR AIR QUALITY CONTINUOUSLY DURING EXCAVATION OPERATIONS AT ALL LOCATIONS CONTAINING HAZARDOUS MATERIAL. COORDINATE CONTAMINATED SOILS AND HAZARDOUS SUBSTANCES/WASTE MANAGEMENT WITH THE APPROPRIATE FEDERAL, STATE, AND LOCAL AGENCIES. i I Attachnieflt G Maintenance, Inspection and Repair Program The contractor shall use the following guidelines for maintenance, inspection, and repair of BMPs identified in the SWPPP BEST MANAGEMENT INSPECTION FREQUENCY MAINTENANCE/REPAIR PROGRAM PRACTICES (B Ps) (all controls) WM-8 CONCRETE WASTE INSPECT WEEKLY DURING TEMPORARY CONCRETE WASHOUT MANAGEMENT THE RAINY SEASON AND AT FACILITIES SHOULD BE MAINTAINED TWO-WEEK INTERVALS IN TO PROVIDE ADEQUATE HOLDING THE NON-RAINY SEASON TO CAPACITY WITH A MINIMUM VERIFY CONTINUED BMP FREEBOARD OF 4 IN. FOR ABOVE IMPLEMENTATION 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 DISPOSED OF. WASHOUT FACILITIES MUST BE CLEANED, OR NEW FACILITIES MUST BE CONSTRUCTED AND READY FOR USE ONCE THE WASHOUT IS 75% FULL. WM-9 SANITARY/SEPTIC WASTE INSPECT WEEKLY DURING ARRANGE FOR REGULAR WASTE MANAGEMENT THE RAINY SEASON AND AT COLLECTION.HIGH WINDS ARE TWO-WEEK INTERVALS IN EXPECTED, PORTABLE SANITARY THE NON-RAINY SEASON TO FACILITIES MUST BE SECURED WITH VERIFY CONTINUED .BMP SPIKES OR WEIGHED DOWN TO IMPLEMENTATION PREVENT OVER TURNING. I I i I I I I I I I I LI I I I Attachment I Trained Contractor Personnel Log Storm Water Management Training Log Project Name: Black Rail 16 Project Number/Location: CT 03-06, Carlsbad, California Storm Water Management Topic: (check as appropriate) U Erosion Control U Sediment Control U Wind Erosion Control U Tracking Control U Non-storm water management U Waste Management and Materials Pollution Control U Storm Water Sampling Specific Training Objective: Location: Date: Instructor: Telephone: Course Length (hours): Attendee Roster (attach additional forms if necessary.) Name Company Phone Attachment! Trained Contractor Personnel Log Name Company Phone - Attachment J Subcontractor Notification Letter and Notification Log -SWPPP Notification Company Address City, State, ZIP Dear Sir/ Madam, Please be advised that the California State Water Resources Control Board has adopted the General Permit (General Permit) for Storm Water Discharges Associated with Construction Activity (CAS000002). The goal of these permits is prevent the discharge of pollutants associated with construction activity from entering the storm drain system, ground and surface waters. [Owner] has developed a Storm Water Pollution Prevention Plan (SWPPP) in order to implement the requirements of the Permits. As a subcontractor, you are required to comply with the SWPPP and the Permits for any work that you perform on site; Any person or group who violates any condition of the Permits may be subject to substantial penalties in accordance with state and federal law. You are encouraged to advise each of your employees working on this project of the requirements of the SWPPP and the Permits. A copy of the Permits and the SWPPP are available for your review at the construction office. Please contact me if you have further questions. Sincerely, Name Title SUBCONTRACTOR NOTIFICATION LOG I Project Name: - I Project Number/Location: SUBCONTRACTOR COMPANY NAME CONTACT NAME ADDRESS PHONE NUMBER PAGER/ FIELD PHONE DATE NOTIFICATION LETTER SENT OF - WORK USE ADDITIONAL PAGES AS NECESSARY I I I Attachment K Notice of Non-Compliance To: Name of Owner [City/Agency Engineerl/Regional Board Staff Date: Insert Date Subject: Notice of Non-Compliance Project Name: Insert Project Name Project Number/ Location: Project number In accordance with the NPDES Statewide Permit for Storm Water Discharges Associated with Construction Activity, the following instance of discharge is noted: Date, time, and location of discharge Insert description and date of event Nature of the operation that caused the discharge insert description of operation Initial assessment of any impact cause by the discharge insert assessment Existing BMP(s) in place prior to discharge event list BMPs in place Date of deployment and type of BMPs deployed after the discharge. BMPs deployed after the discharge (with dates) Steps taken or planned to reduce, eliminate and/or prevent recurrence of the discharge insert steps taken to prevent recurrence Implementation and maintenance schedule for any affected BMPs insert implementation and maintenance schedule Attachment K Notice of Non-Compliance - Sample - If further information or a modification to the above schedule is required, notify the contact person below. I I I I I I I I I I I I I. I Name of Contact Person Title Company Telephone Number Signature Date Attachment L Storm Water Pollution Prevention Plan (SWPPP) and Monitoring Program Checklist CONSTRUCTION PROJECT: Black Rail 16 (Tabata Subdivision) PREPARER: CONTRACT NO: SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP) 1 CHECK IF ADDRESSED NIA IF NOT APPLICABLE SWPPP Section ITEM GENERAL PERMIT REF. COMMENTS 100 SWPPP Certification and Approval C.10 100.1 SWPPP Certification C.10 100.2 SWPPP Approval C.10 200 SWPPP Amendments A.4.a, A.16 200 1 Amendment number and date entered into SWPPP - Amendment Log A 4 A 16 . a, • 200.2 Amendment Certification and Approval A.4.a, A.16 300 Introduction/Project Description 300.1 Project Description and Location (narrative) A.5.a.1 300.2 Unique Site Features (narrative) A.5.a.1 S • 300.4 Project Schedule (narrative and graphical) f A.5.c.5 400 References A.14 500.2 Vicinity Map (narrative or graphic) A.5.a.1 500.2 Site perimeter A.5.a.1 500.2 Geographic Features A.5.a.1 500.2 General topography A.5.a.1 500 4 Water Pollution Control Drawings (WPCDs) (graphic or narrative) A 5 a 2 S 500.4 Site perimeter A.5.a.2 California Storm Water Quality Handbooks BMP Consideration Checklist Construction January 2003 1 of 5 AttachniefltL SWPPP and Monitoring Program Checklist SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP) CHECK IF GENERAL ADDRESSED SWPPP ITEM PERMIT COMMENTS N/A IF NOT Section REF. APPLICABLE 500.4 Existing and proposed buildings, lots, and A.5.a.2 roadways 500.4 Storm water collection and discharge points A.5.a.2 500.4 General topography before and after A.5.a.2 construction 500.4 Anticipateddischarge location(s) A.5.a.2 500.4 Drainage patterns including the entire relevant A.5.a.2 drainage areas 500.4 Temporary on-site drainage(s) A.5.a.2 500.3 Pollutant Source and BMP Identification A 5 b (narratel or indicate on site map) . Drainage A.5.b.1 500.4 Drainage patterns after major grading A.5.b.1 500.4 Slopes after major grading A.5.b.1 Attach. E Calculations for storm water run-on A.5.b.1 BMPs that divert off-site drainage from 500.4 passing through site A.5.b.1 500.4 Storm Water Inlets A.5.b.2 500.4 Drainage patterns to storm water inlets or A.5.b.2 receiving water 500.4 BMPs that protect storm water inlets or A.5.b.2 receiving water Site History (narrative; if possible, indicate location(s) on the Water Pollution Control A.5.b Drawings) Nature of fill material and data describing the 500.3.3 soil. Description of toxic materials treated, A.5.b.3 stored, disposed, spilled or leaked on site 500.3.8 & BMPs that minimize contact of contaminants A, 5 b 3 [ 500.3.9 with storm water Location of Areas Designated for: A.5.b.4 500.3.8 & Vehicle storage & service A.5.b.4 500.4 500.3.8 & Equipment storage, cleaning, maintenance A.5.b.4 500.4 500.3.9 & Soil or waste storage A.5.b.4 500.4 500.3.9 & Construction material loading, unloading, A.5.b.4 500.4 storage and access 500.3:8 & Areas outside of physical site (yards, borrow 500.3.9 areas, etc.) BMP Locations or Descriptions for: A.5.b.5 500.3.9 & Waste handling and disposal areas A.5.b.5 500.4 California Storm Water Quality Handbooks BMP Consideration Checklist Construction January 2003 2 of 5 AttachrflentL SWPPP and Monitoring Program Checklist SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP) CHECK IF 1 I GENERAL ADDRESSED I SWPPP ITEM PERMIT COMMENTS N/A IF NOT Section REF. APPLICABLE j 500.3.9 & On-site storage and disposal of construction 500.4 materials and waste A.5.b.5 500.3.8, I Minimum exposure of storm water to 500.3.9 & construction materials, equipment, vehicles, A.5.b.5 500.4 J waste 500.6 Post Construction BMPs A.5.b.6 - 500.6.1 Listing orDescription of Post-construction A.5.b.6 BMPs 500.4 Location of post-construction BMPs A.5.b.6 500.6.2 Parties responsible for long-term maintenance A.5.b.6 Additional Information A.5.c 500.3.1 Description of other pollutant sources and A.5.c.1 BMPs 500.3.2 Pre-construction control practices A.5.c.1 500.3.1 Inventory of materials and activities that may A.5.c.2 pollute storm water 500.3.8 & BMPs to reduce/eliminate potential pollutants A.5.c.2 500.3.9 listed in the inventory 300.4 Runoff coefficient (before & after) A.5.c.3 300.4 Percent impervious (before & after) A.5.c.3 Attach. F Copy of the NOT A.5.c.4 300.3 Construction activity schedule A.5.c.5 300.5 Contact information A.5.c.6 500.4.1 SOIL STABILIZATION (EROSION A.6 CONTROL) - The SWPPP shall include: A.6.a-c 500.4 Areas of vegetation on site A.6.a.1 500.4 Areas of soil disturbance that will be stabilized A:6.a.2 during rainy season 500.4 Areas of soil disturbance which will be A.6.a.3 exposed during any part of the rainy season 300.4 Implementation schedule for erosion control A.6.a.4 measures 500.3.4 BMPs for erosion control A.6.b 500.3.7 BMPs to control wind erosion A.6.c 500.3.5 SEDIMENT CONTROL A.8 500.3.5 & Description/Illustration of BMPs to prevent 500.4 increase of sediment load in discharge A.8 California Storm Water Quality Handbooks BMP Consideration Checklist Construction January 2003 3 of 5 I I I I I I I I I I I I I I I I I I I AttachmentL SWPPP and Monitoring Program Checklist SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP) CHECK IF SWPPP GENERAL ADDRESSED N/A IF NOT Section ITEM PERMIT COMMENTS APPLICABLE REF. 300.4, Implementation schedule for sediment control 500.3.5 measures A 8 500.3.6 BMPs to control sediment tracking A.8 500.3.8 & NON-STORM WATER MANAGEMENT A.9 500.3.9 500.3.8 & Description of non-storm water discharges to A.9 500.3.9 receiving waters 500.3.8 & Locations of discharges A.9 500.3.9 500.3.8 & Description of BMPs A.9 500.3.9 300 5 Name and phone number of person responsible for non-storm water management 500.6 POST-CONSTRUCTION A.10 500.6.1 Description of post-construction BMPs A.10 Operation /Maintenance of BMPsafter project 500.6.2 completion (including short-term funding, A.10 long-term funding and responsible party) 500.5 MAINTENANCE, INSPECTIONS, AND A.11 REPAIR 300.5, Name and phone number of person(s) A.1 I 600.1 responsible for inspections - Complete inspection checklist: date, weather, 600.1, inadequate BMPs, visual observations of A 11 a-f Attach. H BMPs, corrective action, inspector's name, title, signature OTHER REQUIREMENTS A.12-16 500.7 Documentation of all training A.12 500.8 List of Contractors/Subcontractors A.13 SECTION B: MONITORING AND REPORTING REQUIREMENTS CHECK IF SWPPP GENERAL ADDRESSED N/A IFNOT Section ITEM PERMIT COMMENTS APPLICABLE 600.1 Description of Site Inspection Plans 6.3 100.3 Compliance certification (annually 7/1) BA 600.2 Discharge reporting B.5 Keep records of all inspections, compliance - 600.3 certifications, and noncompliance reports on B.6 - site for a period of at least three years 600.4 Sampling and Analysis Plan for Sediment B.7 California Storm Water Quality Handbooks Checklist I BMP Consideration Construction January 2003 of 5 I I I I I I I I I I I I I I I I I I Attachment L SWPPP and Monitoring Program Checklist SECTION B: MONITORING AND REPORTING REQUIREMENTS CHECK IF GENERAL ADDRESSED SWPPP ITEM PERMIT COMMENTS N/A IF NOT Section REF. APPLICABLE 600.5 Sampling and Analysis Plan for Non-Visible B.8 Pollutants SECTION C: STANDARD PROVISIONS FOR CONSTRUCTION ACTIVITIES CHECK IF GENERAL ADDRESSED SWPPP ITEM PERMIT COMMENTS N/A IFNOT Section REF. APPLICABLE 100.1 Signed SWPPP Certification C.9,10 California Storm Water Quality Handbooks BMP Consideration Checklist Construction January 2003 5 of 5 Attachment M Annual Certification of Compliance Form. Project Name: Project Number: Company Name: Address: Construction Start Date: Completion Date: This proiect is in compliance with the General Permit and this SWPPP (check yes or no) YES NO Description of Work: description of work Work Now in Progress work in progress Work Planned for Next 12 Months: work planned "I certify under penalty of law that, during the past 12 months, the construction activities are in compliance with the requirements of the General Permit and this SWPPP. This Certification is based upon the site inspections required in Section B, Item .3 of the General Permit. Tthis 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." Attachment M Annual Certification of Compliance Owner (or Authorized Representative) Signature Date Name and Title Telephone Number Attachment N Other Plans and Permits I 1 i Attachment 0 Water Pollution Control Cost Breakdown I Project Name: Black Rail 16 Project Number: •CT 03-06 ITEM ITEM DESCRIPTION UNIT JJD_j VALUE AMOUNT EC-4 Hydroseeding FT' EC-9 Earth Dikes & Drainage Swales FT EC-10 Velocity Dissipation Devices EA EC-1 1 Slope Drains EA SE-1 Silt Fence - FT SE-4 Check Dam EA SE-5 Fiber Rolls FT SE-6 Gravel Bag Berm FT SE-7 Street Sweeping and Vacuuming LS SE-10 Storm Drain Inlet Protection EA WE-1 Wind Erosion Control LS TC-i Stabilized Construction Entrance/Exit EA NS-1 Water Conservation Practices LS NS-3 Paving and Grinding Operations LS NS-7 Potable Water/Irrigation LS NS-8 Vehicle and Equipment Cleaning LS NS-10 Vehicle and Equipment Maintenance LS NS-12 Concrete Curing LS NS-13 Material and Equipment Use Over Water LS WM-i Material Delivery and Storage LS WM-2 Material Use LS WM-3 Stockpile Management LS WM-4 Spill Prevention and Control LS I I I H LI I I I I I I I Attachment 0 Water Pollution Control Cost Breakdown ITEM ITEM DESCRIPTION UNIT ESTIMATED QUANTITY j VALUE AMOUNT WM-5 Solid Waste Management LS WM-6 Hazardous Waste Management LS WM-7 Contaminated Soil Management LS WM-8 Concrete Waste Management LS WM-9 Sanitary/Septic Waste Management LS TOTAL I I Notice of Termination Attachment Q BMPs Selected for the Project I I Scheduling EC-1 Objectives - EC Erosion Control SE Sediment Control E] TR Tracking Control 1I WE Wind Erosion Control NS Non-Stomiwater Management Control Waste Management and MateaIsPoilubn Confrol Legend:• E1 Primary Objective Il Secondary Objective In Nd I \-- \> I Its a 06 AS I Targeted Constituents I Description and Purpose Scheduling is the development of a written plan that includes Sediment E1 Nutrients sequencing of construction activities and the implementation of BMPs such as erosion control and sediment control while Trash I taking local climate (rainfall, wind, etc.) into consideration. Metals - The purpose is to reduce the amount and duration of soil Bacteria exposed to erosion by wind, rain, runoff; and vehicle tracking, Oil and Grease _I and to perform the construction activities and càntrol practices Organics in accordance with the planned schedule. I Suitable Applications I Proper sequencing of construction activities to reduce erosion None potential should be incorporated into the schedule of every I 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 I construction sequencing. Limitations Iz Environmental constraints such as nesting season prohibitions reduce the full capabilities of this'BMP. I 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 I physical means or to install sediment trapping devices. Plan the project and develop a schedule showing each phase of I construction. Clearly show how the rainy- season relates to soil I January 2003 California StormwaterBMP Handbook 1 of 3 Construction www.cabmehandbooks.com I EC-1 Scheduling 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-stonnwater discharges such as dewatering, sawcutting, grinding, drilling, boring,, crushing,. blasting, painting, hydro-demolition, mortar mixing, pavement cleaning etc. Workout 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. 2 of 3 California Stormwater BMP Handbook January 2003 Construction www.cabmrthandbooks.com I 'I I I I I I I I 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. January 2003 California Stormwater BMPHandbook 3 of 3 Construction www.cabmphandbookacOm I I I Preservation Of Existing Vegetation EC-2 I 5:: I Objectives ECEroonContrnI SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Confrol Legend: Primary Objective Secondary Objective I I I Description and Purpose Carefully planned preservation of existing vegetation minimizes the potential of removing or injuring existing trees, vines, shrubs, and grasses that protect soil from erosion. Suitable Applications Preservation of existing vegetation is suitable for use on most projects. Large project sites often provide the greatest opportunity for use of this BMP. Suitable applications include the following: a Areas within the site where no construction activity occurs, None or occurs at a later date. This BMP is especially suitable to multi year projects where grading can be phased. a Areas where natural vegetation exists and is designated for preservation Such areas often include steep slopes, watercourse, and building sites in wooded areas. a Areas where local, state, and federal government require preservation, such as vernal pools, wetlands, marshes, certain oak trees, etc. These areas are usually designated on the plans, or in the specifications, permits, or environmental documents. a Where vegetation designated for ultimate removal can be .;: temporarily preserved and be utilized for erosion control and sediment control. - F CIR KI A 'IL'V ',Tfl.: January 2003 California Stormwater BMP Handbook 1 of 4 Construction www.cabmphandbooks.com I Li I I I I I Jargeted Sediment Nutrients Trash Metals Bacteria - Oil and Grease Organics Potential Alternatives I 1 I I I Li EC-2 Preservation Of Existing Vegetation Limitations Requires forward planning by the owner/developer, contractor, and design staff. Limited opportunities for use when project plans do not incorporate existing vegetation into the site design. For sites with diverse topography, it is often difficult and expensive to save existing trees while grading the site satisfactory for the planned development. Implementation The best way to prevent erosion is to not disturb the land. In order to reduce the impacts of new development and redevelopment, projects may be designed to avoid disturbing land in sensitive areas of the site (e.g., natural watercourses, steep slopes), and to incorporate unique or desirable existing vegetation into the sites landscaping plan. Clearly marking and leaving a buffer area around these unique areas during construction will help to preserve these areas as well as take advantage of natural erosion prevention and sediment trapping. Existing vegetation to be preserved on the site must be protected from mechanical and other injury while the land is being developed. The purpose of protecting existing vegetation is to ensure the survival of desirable vegetation for shade, beautification, and erosion control. Mature vegetation has extensive root systems that help to hold soil in place, thus reducing erosion. In addition, vegetation helps keep soil from drying rapidly and becoming susceptible to erosion; To effectively save existing vegetation, no disturbances of any kind should be allowed within a defined area around the vegetation. For trees, no construction activity should occur within the drip line of the tree. Timing Provide for preservation of existing vegetation prior to the commencement of clearing and grubbing operations or other soil disturbing activities in areas where no construction activity is planned or will occur at a later date. Design and Layout Mark areas to be preserved with temporary fencing. Include sufficient setback to protect roots. - Orange colored plastic mesh fencing works well. - Use appropriate fence posts and adequate post spacing and depth to completely support the fence in an upright position. Locate temporary roadways, stockpiles, and layout areas to avoid stands of trees, shrubs, and grass. Consider the impact of grade changes to existing vegetation and the root zone. u Maintain existing irrigation systems where feasible. Temporary irrigation may be required. Instruct employees and subcontractors to honor protective devices. Prohibit heavy equipment, vehicular traffic, or storage of construction materials within the protected area. 2 of 4 California Stormwatr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I ci I I I I I Preservation Of Existing Vegetation, EC-2 Costs There is little cost associated with preserving existing vegetation if properly planned during the project design, and these costs may be offset by aesthetic benefits that enhance property values. During construction, the cost for preserving existing vegetation will likely be less than the cost of applying erosion and sediment controls to the disturbed area. Replacing vegetation inadvertently destroyed during construction can be extremely expensive, sometimes in excess of $10,000 per tree. Inspection and l9diflLefldliLG During construction, the limits of disturbance should remain clearly marked at all times. Irrigation or maintenance of existing vegetation should be described in the landscaping plan. If damage to protected trees still occurs, maintenance guidelines described below should be followed: Verify that protective measures remain in place. Restore damaged protection measures immediately. Serious tree injuries shall be attended to by an arborist. Damage to the crown, trunk, or root system of a retained tree shall be repaired immediately. : Trench as far from tree trunks as possible, usually outside of the tree drip line or canopy. Curve trenches around trees to avoid large roots or root concentrations. If roots are encountered, consider tunneling under them. When trenching or tunneling near or under trees to be retained, place tunnels at least 1.8 in. below the ground surface, and not below the tree center to minimize impact on the roots. Do not leave tree roots exposed to air. Cover exposed roots with soil as soon as possible. If soil covering is not practical, protect exposed roots with wet burlap or peat moss until the tunnel or trench is ready for backfill. Cleanly remove the ends of damaged roots with a smooth cut. Fill trenches and tunnels as soon as possible. Careful filling and tamping will eliminate air spaces in the soil, which can damage roots. If bark damage occurs, cutback all loosened bark into the undamaged area, with the cut tapered at the top and bottom and drainage provided at the base of the wood. Limit cutting the undamaged area as much as possible. Aerate soil that has been compacted over a trees root zone by punching holes 12 in. deep with an iron bar, and moving the bar back and forth until the soil is loosened. Place holes 18 in. apart throughout the area of compacted soil under the tree crown. Fertilization - Fertilize stressed or.damaged broadleaf trees to aid recovery. - Fertilize trees in the late fall or early spring: January 2003 California Stormwater BMP Handbook 3 of 4 Construction www.cabmphandbooks.com I I I I I I H I I I I I D Li i EC-2 Preservation Of Existing Vegetation I - Apply fertilizer to the soil over the feeder roots and in accordance with label instructions, but never closer than 3 ft to the trunk. Increase the fertilized area by one-fourth of the crown area for conifers that have extended root systems. Retain protective measures until all other construction activity is complete to avoid damage during site cleanup and stabilization. References County of Sacramento Tree Preservation Ordinance, September 1981. StOrmwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. Stomiwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for The Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. I 4 o 4 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control EJ NS Non-Stomiwater Management Control WM Waste Management and Mateals Polluon Confrol Legend: Primary Objective Secondary. Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives EC-3 Hydraulic Mulch EC-5 Soil Binders EC-6 Straw Mulch EC-7 Geotextiles and Mats EC-8 Wood Mulching I i Hydroseeding EC-4 Description and Purpose Hydroseeding typically consists of applying a mixture of wood fiber, seed, fertilizer, and stabilizing emulsion with hydro- mulch equipment, to temporarily protect exposed soils from erosion by water and wind. Suitable Applications Hydroseeding is suitable for soil disturbed areas requiring temporary protection until permanent stabilization is established, and disturbed areas that will be re-disturbed following an extended period of inactivity. Limitations Hydro seeding may be used alone only when there is sufficient time in the season to ensure adequate vegetation establishment and coverage to provide adequate erosion control. Otherwise, hydroseeding must be used in conjunction with mulching (i.e., straw mulch). Steep slopes are difficult to protect with temporary seeding. Temporary seeding may not be appropriate in dry periods without supplemental irrigation. I I I I I I I I I I I Temporary vegetation may have to be removed before permanent vegetation is applied oc Temporary vegetation is not appropriate for short term inactivity. January 2003 California Stormwater BMP Handbook • 1 of 3 Construction www.cabmphandbooks.com I I I EC-4 Hydroseeding Implementation In order to select appropriate hydro seeding mixtures, an evaluation of site conditions shall be performed with respect to: - Soil conditions - Maintenance requirements - Site topography - Sensitive adjacent areas - Season and climate - Water availability - Vegetation types - Plans for permanent vegetation The local office of the u.S.D.A. Natural Resources Conservation Service (NRCS) is an excellent source of information onappropriate seed mixes. The following steps shall be followed for implementation: Avoid use of hydro seeding in areas where the BMP would be incompatible with future earthwork activities and would have to be removed. Hydroseeding can be accomplished using a multiple step or one step process. The multiple step process ensures maximum direct contact of the seeds to soil. When the one step process is used to apply the mixture of fiber, seed, etc., the seed rate shall be increased to compensate for all seeds not having direct contact with the soil. Prior to application, roughen the area to be seeded with the furrows trending along the contours.. Apply a straw mulch to keep seeds in place and to moderate soil moisture and temperature until the seeds germinate and grow. All seeds shall be in conformance with the California State Seed Law of the Department of Agriculture. Each seed bag shall be delivered to the site sealed and clearly marked as to species, purity, percent germination, dealer's guarantee, and dates of test. The container shall be labeled to clearly reflect the amount of Pure Live Seed (PLS) contained. All legume seed shall be pellet inoculated. Inoculant sources shall be species specific and shall be applied at a rate of 2 lb of inoculant per 100 lb seed. Commercial fertilizer shall conform to the requirements of the California Food and Agricultural Code. Fertilizer shall be pelleted or granular form. Follow up applications shall be made as needed to cover weak spots and to maintain adequate soil protection. Avoid over spray onto roads, sidewalks, drainage channels, existing vegetation, etc. Costs . Average cost for installation and maintenance may vary from as low as $300 per acre for flat slopes and stable soils, to $1600 per acre for moderate to steep slopes and/or erosive soils. 2 o 3 California StormwatEr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I I I I I I I I I I I I I I I I I I I I I Hydroseedi ng EC-4 Hydroseeding Installed Cost pep Acre_ High Density Ornamentals $400 -$1600 Turf Species $350 Bunch Grasses $300 -$1300 Fast Growing Annual $350 -$650 Perennial $300 -$800 Non-Competing Native $300-$1600 Non-Native $400 -$500 Sterile Cereal Grain $500 Source: Caltrans Guidance for Soil Stabilization for Temporary Slopes, Nov. 1999 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. I H H I I Areas where erosion is evident shall be repaired and BMPs re-applied as soon as possible. Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re-application of BMPs. Where seeds fail to germinate, or they germinate and die, the area must be re-seeded, fertilized, and mulched within the planting season, using not less than half the original application rates. Irrigation systems, if applicable, should be inspected daily while in use to identify system malfunctions and line breaks. When line breaks are detected, the system must be shut down immediately and breaks repaired before the system is put back into operation. Irrigation systems shall be inspected for complete coverage and adjusted as needed to maintain complete coverage. References Stormwatér Quality Handbooks Construction Site Best Management Practices (BMPs) Manua], State of California Department of Transportation (Caltrans), November 2000. Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999. I I I I January 2003 California Stormwàtr BMP Handbook 3 of 3 Construction www.cabmrhandbooks.com I I Earth Dikes and Drainage Swales EC-9 Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stomiwater Management Control WM Waste Management and Matetials Pollution Conol Legend: 11 Primary Objective E1 Secondary Objective - Description and Purpose An earth dike is a temporary berm or ridge of compacted soil used to divert runoff or channel water to a desired location. A drainage swale is a shaped and sloped depression in the soil surface used to convey runoff to a desired location. Earth dikes and drainage swales are used to divert off site runoff around the construction site, divert runoff from stabilized areas and disturbed areas, and direct runoff into sediment basins or traps. I I I I I I I I Targeted Constituents - Sediment Nutrients - - - Trash Metals - Bacteria - Oil and Grease - Organics Suitable Applications I Earth dikes and drainage swales are suitable for use, - - Potential Alternatives I individually or together, where runoff needs to be diverted from- None - one area and conveyed to another. - - - I m Earth dikes and drainage swales may be used: - - - I - To convey surface runoff down sloping land - - - To intercept and divert runoff to avoid sheet flow over - sloped surfaces I - - - - To divert and direct runoff towards a stabilized - watercourse, drainage pipe or channel - - - - I - To intercept runoff from paved surfaces I - Below steep grades where runoff begins to concentrate - Along roadways and facility improvements subject to flood -- - drainage I - - cArR)TNIA TORIWNATFR I January 2003 California Stormwater BMP Handbook 1 of 7 Construction - - - www.cabrnphandbooks.com - I i EC-9 Earth Dikes and Drainage Swas I - At the top of slopes to divert runon from adjacent or undisturbed slopes - At bottom and mid slope locations to intercept sheet flow and convey concentrated flows I - Divert sediment laden runoff into sediment basins or traps Limitations I Dikes should not be used for drainage areas greater than 10 acres or along slopes greater than 10 percent. For larger areas more permanent drainage structures should be built. All drainage I structures should be built in compliance with local municipal requirements. Earth dikes may create more disturbed area on site and become barriers to construction equipment I m Earth dikes must be stabilized immediately, which adds cost and maintenance concerns. I Diverted stormwater may cause downstream flood damage. Dikes should not be constructed of soils that may be easily eroded. I . Regrading the site to remove the dike may add additional cost. Temporary drains and swales or any other diversion of runoff should not adversely impact I .upstream or downstream properties. Temporary drains and swales must conform to local floodplain management requirements. I • Earth dikes/drainage swales are not suitable as sediment trapping devices. It may be necessary to use other soil stabilization and sediment controls such as check darns, I . plastics, and blankets, to prevent scour and erosion in newly graded dikes, swales, and ditches. I Implementation .. . The temporary earth dike is a berm or ridge of compacted soil, located in such a manner as to divert stormwater to a sediment trapping device or a stabilized outlet, thereby reducing the I potential for erosion and offsite sedimentation. Earth dikes can also be used to divert runoff from off site and from undisturbed areas away from disturbed areas and to divert sheet flows away from unprotected slopes. I An earth dike does not itself control erosion or remove sediment from runoff. A dike prevents erosion by directing runoff to an erosion control device such as a sediment trap or directing I .runoff away from an erodible area. Temporary diversion dikes should not adversely impact adjacent properties and must conform to local floodplain management regulations, and should not be used in areas with slopes steeper than io%. I Slopes that are formed during cut and fill operations should be protected from erosion by runoff. A combination of a temporary drainage swale and an earth dike at the top of a slope can divert runoff to a location where it can be brought to the bottom of the slope (see EC-ii, Slope Drains). A combination dike and swale is easily constructed by a single pass of a bulldozer or grader and I 2 of 7 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com woDSooqpu2qdwqPDMMM UO!1JflJ1SUO3 L JOE >IooqpueH dW9 JMWJOS P!UJ01II20 coo-Z Aienuer 1 pzffrqEs jnbp ou ar ip OAoqe uaxe @&uT-e ip aqlio JUUtJO Tp Jt Ut[A1 (-) rns uunp .io (-) di1 iuurrpg p su tpns 33TA@P 2?Mddeij 1uuIrps P ol pAAUO oq pjnoqs jjournj uoisoJ Jo urnurutul tflJM uoqounj snux Tp tpJ tp uIOL no qj, qjat uotpaisuoo roj su sso.io le ppu Ajjrisn axe sdos tij pup stpp& dol @pjM ur ljo tppTM dowuuurnui pu tjij umuriuttu ut 8T 'sdojs @PIS J4JJ Jo i: A1IJ pp1qs ITP liv -4@11-no uu ol @&urpap amilsod ArnJ pnois sip iiv m I uuidrib uiAouI -quua Aq poduioo @q pjnotjs stp jy :jurxux UMOJJOJ ut psur @q pfflOt[S STpuOTSJAip IJOtIflJ JMULIOS 11ATp 01 pSfl dJAIH aATsuadxaiu 'toEJd E axe s)Jip tJJ AiiOthuj I n'° pzqs @PIAOJd ssooid uotpnisuoz tp u stpp pu SJMS sp uurnxird zr[tIn pu jstr jqissod utj JOUMO Aidoid I aiq4 moij uotzt.iotçin uautrrrnos flOttM idord rtjie ouojounr qj@ATp ou o uuiis rthun uArd o4 spj Au pdmo I i'ord qo Joj stuaped MOJJ uJp ptm flOtSM 'Sdn)JZYq MOU uTddoiiAo sdAi JTos I rnsrn 9qljO UOTS01@ 03 @Tip sjsrl @Tpj0 UOtPfl[A Inj@.iuo uo psq A3o0JAMoJJ 3OJ MOU tJTt JOJ ipp UT[ 9 OS11 M I pzqs q pjnotjs SUThAUD uottuJoJ X11a puu uoisoi@ oi 3o1qns @xe sjs pu Cg)j[p puun cd s I AATSSOXJ slMs &eupeip srp 1jjXe@ @IUD PUU aZTS poJioo ol pr[dd q 3S11W lv.Lauao tp uiolj pmuzsTp si t atojq dq .io msiq 1UOUIS oui pai JATp q 3snuljjouiu up uuups sAuoo 33 @Iums Jo urp Auy uotzflJqB1s jo sutu jisAt1d iotpo o utim dr-dij ooi uuiq joTuxtJo UOT3A. usn pqs @q pjnotjs Jnoo fiM uosoi ojus jj JruonJ3s uozipqs - 0111T .10 uaip pzTjqs u oiuo patp @q 3511U1 JEM.s io uJp tpjo no MOJJ snqj z.ioj OATSOJ@ PUP 23100IA 531 uiSJOUT jjounr 3JJflS aiuouo soq2Jd uoisJAiQ I pzffJq3s fB sdoTs tp pup psui om sdWg uoT3Tu3suo 4s0d qun od u UUIJ UE ppBJ2 Au s tp up pJ3suT oq pinotis SJtt31U3S U01SJATQ pIJ {3 JAO SItiM .10 S)JOJ3 tI3J0 ssd puozs Aq p3oEduioo 6-)] saies ebeuieicj pue so)I!a ip.ie; I I I i EC-9 Earth Dikes and Drainage Swales Im Temporary stabilization may be achieved using seed and mulching for slopes less than 5% and either rip-rap or sod for slopes in excess of 5%. In either case, stabilization of the earth dike should be completed immediately after construction or prior to the first rain. I z If riprap is used to stabilize the channel formed along the toe of the dike, the following typical specifications apply: Channel Grade Riprap Stabilization 0.5-1.0% 4 in. Rock 1.1-2.0% 6in. Rock 2.1-4.0% 8 in. Rock 4.1-5.0% 8 in.-.12 in. Riprap The stone riprap, recycled concrete, etc. used for stabilization should be pressed into the soil I with construction equipment. Filter cloth maybe used to cover dikes in use for long periods. I . Construction activity on the earth dike should be kept to a minimum. Drainage Swales I Drainage swales are only effective if they are properly installed. Swales are more effective than dikes because they tend to be more stable. The combination of a swale with a dike on the downhill side is the most cost effective diversion. I Standard engineering design criteria for small open channel and closed conveyance systems should be used (see the local drainage design manual). Unless local drainage design criteria I - state otherwise, drainage swales should be designed as follows: No more than 5 acres may drain to a temporary drainage swale. I • Place drainage swales above or below, not on, a cut or fill slope. Swale bottom width should be at least 2 ft I • Depth of the swale should be at least 18 in. I . Side slopes should be :i or flatter. Drainage or swales should be laid at a grade of at least 1 percent, but not more than 15 I percent. The swale must not be overtopped by the peak discharge from a 10-year storm, irrespective of the design criteria stated above. Remove all trees, from-the stumps, obstructions, and other objectionable material swale when it is built. I • Compact any fill material along the path of the swale. I 4 of 7 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I Earth Dikes and Drainage Swales EC-9 Is Stabilize all swales immediately. Seed and mulch swales at a slope of less than 5 percent, '5 and use rip-rap or sod for swales with a slope between and 15 percent. For temporary swales, geotextiles and mats (EC-7) may provide immediate stabilization. I a Irrigation may be required to establish sufficient vegetation to prevent erosion. I Do not operate construction vehicles across aswale unless a stabilized crossing is provided. Permanent drainage facilities must be designed by a professional engineer (see the local drainage design criteria for proper design). I . At a minimum, the drainage swale should conform to predevelopment drainage patterns and capacities. 1 Construct the drainage swale with a positive grade to a stabilized outlet. I swale Provide erosion protection or energy dissipation measures if the flow out of the drainage can reach an erosive velocity. Costs 1• Cost ranges from $15 to $55 per ft for both earthwork and stabilization and depends on availability of material, site location, and access. - 1 . Small dikes: $2.50 - $6.50/linear ft; Large dikes: $2.50/yd3. • The cost of a drainage swale increases with drainage area and slope. Typical swales for. controlling internal erosion are inexpensive, as they are quickly formed during routine I earthwork. I .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. 1 '. Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. Inspect ditches and berms for washouts. Replace lost riprap, damaged liningsor soil stabilizers as needed. # Inspect channel linings, embankments, and beds of ditches and berms for erosion and accumulation of debris and sediment. Remove debris and sediment and repair linings and embankments as needed. Temporary conveyances should be completely removed as soon as the surrounding drainage area has been stabilized or at the completion of construction I I References Erosion-and Sediment Control Handbook, S.J McGraw Hill Book Company, 1986. I I Goldman, K. Jackson, T.A. Bursetynsky, P.E., I January 2003 California Stormwater BMP Handbook 5 of 7 Construction www.cabmphandbooks.com I I EC-9 Earth Dikes and Drainage S*as I Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995. National Association of Home Builders (NAHB). Stormwater Runoff & Nonpoint Source I Pollution Control Guide for Builders and Developers National Association of Home Builders, Washington, D.C., 1995 I National Management Measures to Control Nonpoint Source Pollution from Urban Areas, United States Environmental Protection Agency, 2002. I Southeastern Wisconsin Regional Planning Commission (SWRPC). Costs of Urban Nonpoint Source Water Pollution Control Measures. Technical Report No. 31. Southeastern Wisconsin Regional Planning Commission, Waukesha, WI. 1991 I Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. I Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. I F I I I I I I I 6 of 7 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Earth Dikes and Drainage Swales EC-9 1—Stabilizing cover, when needed. Mm Compacted fill /_Natural ground line /RoV \L2:1. (H:V) slope or flatter TYPICAL DRAI NAGE SWALE NOT TO SCALE NOTES: Stabilize inlet, outlets and slopes. Properly compact the subgrade. Compacted fill 24" Min If I I Stabilizing cover, when needed Strip Row - Natural ground line TYPI CAL EARTH DI KE NOT TO SCALE January 2003 California Stormwater BMP Handbook 7 of 7 Construction www.cabmphandbooks.com 1 i Velocity Dissipation Devices EC-l0 Description and Purpose Outlet protection is a physical device composed of rock, grouted riprap, or concrete rubble, which is placed at the outlet of a pipe or channel to prevent scour of the soil caused by concentrated, high velocity flows. Suitable Applications Whenever discharge velocities and energies at the outlets of culverts, conduits, or channels are sufficient to erode the next downstream reach. This includes temporary diversion structures to divert runon during construction. These devices maybe used at the following locations: - Outlets of pipe, drains, culverts, slope drains, diversion ditches, swales, conduits, or channels. - Outlets located at the bottom of mild to steep slopes. - Discharge outlets that carry continuous flows of water. - Outlets subject to short, intense flows of water, such as flash floods. - Points where lined conveyances discharge to unlined conveyances Limitations .It a Large storms or high flows can wash away the rock outlet protection and leave the area susceptible to erosion. . A 1 MIM s cr;\w January 2003 California StormwaIr BMP Handbook - 1 of 4 Construction www.cabmphandbooks.com I I I I LI I I I I I I LII I I I I [I Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stomiwater Management Control WM Waste Management and Mateals Polkron Control Legend: l Primary Objective Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None EC-10 Velocity Dissipation Devices Sediment captured by the rock outlet protection may be difficult to remove without removing the rock. Outlet protection may negatively impact the channel habitat. Grouted riprap may breakup in areas of freeze and thaw. If there is not adequate drainage, and water builds up behind grouted riprap, it may cause the grouted riprap to break up due to the resulting hydrostatic pressure. Implementation General - Outlet protection is needed where discharge velocities and energies at the outlets of culverts, conduits or channels are sufficient to erode the immediate downstream reach. This practice protects the outlet from developing small eroded pools (plange pools), and protects against gully erosion resulting from scouring at a culvert mouth. Design and Layout As with most channel design projects, depth of flow, roughness, gradient, side slopes, discharge rate, and velocity Should be considered in the outlet design. Compliance to local and state regulations should also be considered while working in environmentally sensitive streambeds. General recommendations for rock size and length of outlet protection mat are shown in the rock outlet protection figure in this BMP and should be considered minimums. The apron length and rock size gradation are determined using a combination of the discharge pipe diameter and estimate discharge rate: Select the longest apron length and largest rock size suggested by the pipe size and -discharge rate. Where flows are conveyed in open channels such as ditches and swales, use the estimated discharge rate for selecting the apron length and rock size. Flows should be same as the culvert or channel design flow but never the less than the peak 5 year flow for temporary structures planned for one rainy season, or the 10 year peak flow for temporary structures planned for two or three rainy seasons. There are many types of energy dissipaters, with rock being the one that is represented in, the attached figure. Best results are obtained when sound, durable, and angular rock is used. I • Install riprap, grouted riprap, or concrete apron at selected outlet. Riprap aprons are best suited for temporary use during construction. Grouted or wired tied rock riprap can minimize maintenance requirements. ro Rock outlet protection is usually less expensive and easier to install than concrete aprons or energy dissipaters. It also serves to trap sediment and reduce flow velocities. I is Carefully place riprap to avoid damaging the filter fabric. - Stone 4 in. to 6 in. may be carefully dumped onto filter fabric from a height not to exceed I 12 in. - Stone 8 in. to 12 in. must be hand placed onto filter fabric, or the filter fabric may be covered with 4 in. of gravel and the.8 in, to 12 in. rock may be dumped from a height not I to exceed 16 in. I 2 of 4 California Stormwater B11P Handbook January 2003 Construction www.cabmphandbooks.com I I [1 I I I I I I I I Velocity Dissipation Devices EC-10 I - Stone greater than 12 in. shall only be dumped onto filter fabric protected with a layer of gravel with a thickness equal to one half the D50 rock size, and the dump height limited to twice the depth of the gravel protection layer thickness. I m For proper operation of apron: Align apron with receiving stream and keep straight throughout its length. If a curve is needed to fit site conditions, place it in upper section of apron. Outlets on slopes steeper than 10 percent should have additional protection. Costs Costs are low if material is readily available. If material is imported, costs will be higher. Average installed cost is $150 per device. 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. Inspect BMPs subjected to non-stormwater discharges daily while non-stormwater discharges occur. Inspect apron for displacement of the riprap and damage to the underlying fabric. Repair fabric and replace riprap that has washed away. If riprap continues to wash away, consider using larger material. - Inspect for scour beneath the riprap and around the outlet. Repair damage to slope's or underlying filter fabric immediately. Temporary devices should be completely removed as soon as the surrounding drainage area has been stabilized or at the completion of construction. References County of Sacramento Improvement Standards, Sacramento County, May 1989. Erosion and Sediment Control Handbook, S.J. Goldman, K. Jackson, T.A. Bursztynsky, P.E., McGraw Hill Book Company, 1986. Handbook of Steel Drainage & Highway Construction, American Iron and Steel Institute, 1983. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995. Storrnwater 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. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. January 2003 California Stormwatr BMP Handbook 3 of 4 Construction www.cabmphandbooks.com I I I I I I I I I 17 ECM-10 Velocity Dissipation Devices A 4d0 (mm) Pipe outlet to well defined channel 1'—Key in 6-9" I recommended for La / entire perimeter 0% / d1.5 Max 4- rock dia. Filter Fabric SECTION A-A Pipe Diameter Discharge Apron Length, La RIP Rap Ds? Diameter Mm inches ft3/s ft . inches 5. 10 12 10 13 6 10 10 6 20 16 8 18 30 23 12 40 26 16 30 16 8 40 26 8 24 50 26 12 6o 30 16 ror larger or higher flows consult a Registered Civil Engineer Source: USDA - SCS 4 o 4 California. Stormwãter BMP Handbook . January 2003 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stomiwater Management Control WM Waste Management and Materials Pollulion Contol Legend: Primary Objective E] Secondary Objective I I' Water Conservation Practices NS-1 I I El 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. Stabilize 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. January 2003 California Stormwater BMP Handbook 1 o 2 - Construction www.cabmphandbooks.com Targeted Constituents Sediment Nutrients Trash' Metals Bacteria Oil and Grease Organics Potential Alternatives None i I El I i NS-1 Water. Conservation Practices Direct construction water runoff to areas where it can soak 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 Stormwatër Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. 2of 2 California Stormwater BMP Handbook January 2003 Cohstruction www.cabmphandbooks.com - - Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS NonStormwater Management Control WM Waste Management and rM Materials Pouon Control Legend: El Primary Objective IN Secondary Objective I i Paving and Grinding Operations N5-3 Targeted Constituents I 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. 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 Finer solids are not effectively removed by filtration systems. Paving opportunities maybe limited during wet weather. I I Sediment El Nutrients Trash Metals Bacteria Oil and Grease El Organics Potential Alternatives None Implementation General Avoid paving during the wet season when feasible Reschedule paving and grinding activities if rain is in the forecast. 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). 71NIAS 41VA1 FI January 2003 California Stormwater BMP Handbook 1 of 4 Construction www.cabmphandbooks.com I I I I I I NS-3 Paving and Grinding Operations I i Protect drainage courses, particularly in areas with a grade, by employing BMPs to divert runoff or to trap and filter sediment. i If paving involves an onsite mixing plant, follow the stormwater permitting requirements for industrial activities. I i 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 and AC 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 must not be allowed to enter any storm drains or watercourses. Install silt fence until structure is stabilized 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; or SE-5, Fiber Rolls. - Collect and remove all broken asphalt and recycle when practical. Old or spilled asphalt must be recycled or disposed. - - Any AC chunks and pieces used in embankments must be placed abovethe water table and covered by at least i ft of material. Do not allow saw-cut slurry to enter storm drains orwatercourses. Residue from grinding operations should be picked up by means of a vacuum attachment to the grinding machine, 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-io, Liquid Waste Management. Dig out activities should not be conducted in the rain. Collect dig out material by mechanical or manual methods. This material may be recycled for use as shoulder backing or base material. If dig out 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: 2 of 4 California Stormwathr BMP Handbook January 2003 Construction www.cabmphandbooks.com i I I I I I i I I I I Paving and Grinding Operations NS-3 I - 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. I - Old asphalt must be disposed of properly. Collect and remove all broken asphalt from the site and recycle whenever possible. I Portland Cement Concrete Paving Do not wash sweepings from exposed aggregate concrete into a storm drain system. Collect I 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 I if allowed by the local wastewater authority. Sealing Operations I • During chip seal application and sweeping operations, petroleum or petroleum covered aggregate must not be allowed to enter any storm drain or watercourses. Apply temporary perimeter controls until structure is stabilized. I • Drainage inlet structures and manholes should be covered with filter fabric-during application of seal coat, tack coat, slurry seal, and fog seal. I • 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. I 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 muse. I . . Clean up spills with absorbent materials rather than burying. See NS-1o, Vehicle and Equipment Maintenance, WM-4, Spill Prevention and Control, and WM-io, Liquid Waste Management. . S Substances used to coat asphalt transport trucks, and asphalt spreading equipment should not contain soap and should be non-foaming and non-toxic. I • Use only non-toxic substances to coat asphalt transport trucks and asphalt spreading equipment. I r • Paving equipment parked onsite should be parked over plastic to prevent soil contamination. S I • 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 I Cleaning. S S I I January 2003 - California StormwatEr BMP Handbook 3 of 4 Construction www.cabmphandbooks.com I I NS-3 Paving and Grinding Operations I . 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 I inlets, the stormwater drainage system, or watercourses. I 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 when the vehicle is deadheaded. I . 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 I 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 vehicle is deadheaded. When servicing or filling melting tanks, ensure all pressure is released before removing lids to avoid spills. is ,On large-scale projects, use mechanical or manual methods to collect excess bituminous material from the roadway after removal of markers. W Costs All of the above are low cost measures. I . Inspection and Maintenance .. . . Inspect and verify that activity-bas BMPs are in place prior to the commencement of I associated activities. While activities associated with the BMP are underway, inspect weekly during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. • Keep ample supplies of drip pans or absorbent materials onsite. I • Inspect and maintain machinery regularly to minimize leaks and drips. References I 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. . . . I Hot Mix Asphalt-Paving Handbook AC 150/5370-14, Appendix I, U.S. Army corps of Engineers, July 1991. I Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. El 4 of 4 California Stormwater BMP Handbook Construction www.cabmphandbooks.com January 003 Objectives EC Erosion Control SE Sediment Control TR Traôking Control WE Wind Erosion Control NS Non-Stomiwater Management Control WM Waste Management and Materials Polluon Confrol Legend: Primary Objective L1 Secondary Objective fl U I El I I Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None I I Potable Water/Irrigation NS-7 Description and Purpose Potable Water/Irrigation consists of practices and procedures to manage the discharge of potential pollutants generated during discharges from irrigation water lines, landscape irrigation, lawn or garden watering, planned and unplanned discharges from potable water sources, water line flushing, and hydrant flushing. Suitable Applications Implement this BMP whenever potable water or irrigation water discharges occur at or enter a construction site. Limitations None identified. Implementation Direct water from offsite sources around or through a construction site, where feasible, in away that minimizes contact with the construction site. Discharges from water line flushing should be reused for landscaping purposes where feasible. I / Targeted Constituents I Li I I I I I Shut off the water source to broken lines, sprinklers, or valves as soon as possible to prevent excess water flow. , Protect downstream stormwater drainage systems and watercourses from water pumped or bailed from trenches excavated to repair water lines. A•A 'I January 2003 California Stormwater BMP Handbook . lof 2 Construction www.cabmphandbooks.com I I I I I I NS-7 Potable Water/Irrigation I a Inspect irrigated areas within the construction limits for excess watering. Adjust watering times and schedules to ensure that the appropriate amount of water is being used and to minimize runoff. Consider factors such as soil structure, grade, time of year, and type of I plant material in determining the proper amounts of water for a specific area. Costs I Cost to manage potable water and irrigation are low and generally considered to be a normal part of related activities.- 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 I .during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. I Inspect BMPs subject to non-stormwater discharges daily while non-stOrmwater discharges occur. Repair broken water lines as soon as possible. Inspect irrigated areas regularly for signs of erosion and/or discharge. 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. Stormwater Management for Construction Activities, Developing Pollution Prevention. Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. I I U I 2 of 2 . California Stormwater BMP Handbook . January 2003 Construction tAltAtAl r hrnnh ndhnnUc mm U I I U I Vehicle and Equipment, Cleaning NS-8 Targeted Constituents 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 I 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 TR-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: I January 2003 California StormwatrBMP Handbook - - 1 of 3 - Construction www.cabmphandbooks.com Li I I I I I I Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stomiwater Management Control WM Waste Management and Materials Pollution Control -Legend: Primary Objective II Secondary Objective I I I I I I I Sediment - Nutrients Trash Metals Bacteria Oil and Grease Organics • Potential Alternatives None I i NS-8 Vehicle and Equipment Cleaning .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. I . 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 I according to the requirements of WM-io, 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. - I • 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: - Use as little water as possible. High-pressure sprayers may use less water than a hose and should be considered I - Use positive shutoff valve to minimize water usage - Facility wash racks should discharge to a sanitary sewer, recycle system or other I approved discharge system and must not discharge to the storm drainage system, watercourses, or to groundwater I Costs - Cleaning vehicles and equipment at an offMte facility may reduce overall costs for vehicle and equipment cleaning by eliminating the need to provide similar services onsite. When onsite I 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 I I 2 of 3 California Stormwatr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I I i Vehicle and Equipment Cleaning NS-8 I 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 I during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. I . Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. I . 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. I . Inspect sump regularly and remove liquids and sediment as needed. Prohibit employees and subcontractors from washing personal vehicles and equipment on I the construction site. References I Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I Swisher, R.D. Surfactant Biodegradation, Marcel Decker Corporation, 1987. I I I I 1 I I Li January 2003 California Stormwater BMP Handbook 3 of 3 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS NoftStomlwater Management Control WM Waste Management and Materials Pollution Control Legend: l Primary Objective fl Secondary Objective Targeted Constituents Sediment Nutrient Trash El Metals Bacteria Oil and Grease. El Organics El Potential Alternatives None- 1 of 4 I I 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 offsite 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 I for maintenance and repair. Sending vehicles/equipment offsite should be done in conjunction with TR-1, Stabilized Co nstructio n 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, I - 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 1 Cleaning, and NS-9, Vehicle and Equipment Fueling. I January 2003 - California Stormwater BMP Handbook - - Construction www.cabmphandbooks.com Li I I I I I I I I I I I i NS-10 Vehicle & Equipment Maintenance I 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 I eliminating the need for a separate maintenance area. - If maintenance must occur onsite, use designated areas, located away from drainage courses. I 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 I 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. a 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. a Inspect onsite vehicles and equipment daily at startup for leaks, and repair inimediate1y 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. a 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. a 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. Repair leaks of fluids and oil immediately. 2 of 4 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I I I I I I I I I I i Vehicle & Equipment Maintenance NS-10 I Listed below is further information if you must perform vehicle or equipment maintenance onsite. I Safer Alternative Products Consider products that are less toxic or hazardous than regular products. These products are often sold under an "environmentally friendly" label. I • Consider use of grease substitutes for lubrication of truck fifth-wheels. Follow manufacturers label for details on specific uses. I . Consider use of plastic friction plates on truck fifth-wheels in lieu of grease. Follow manufacturers label for details on specific uses. I Waste Reduction - Parts are Often cleaned using solvents such as trichloroethylene, trichlo ro ethane, or methylene chloride. Many of these cleaners are listed in California Toxic Rule as priority pollutants. These I 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 ajob as well as two I 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 I 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 I parts. Recycling and Disposal Separating wastes allows for easier recycling and may reduce disposal costs. Keep hazardous I 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 I or other open containers lying around. Provide cover and secondary containment until these materials can be removed from the site. I 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 I 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. I Put it into the containment area until you are sure it is not leaking. Costs - I All of the above are low cost measures. Higher costs are incurred to setup and maintain onsite maintenance areas. I - I January 2003 California Stormwater BMP Handbook 3 of 4 Construction www.cabmphandbooks.com I i NS-10 Vehicle & Equipment Maintenance I 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 I during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. I .Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur. I . Keep ample supplies of spill cleanup materials onsite. Maintain waste fluid containers in leak proof condition. I . 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. I • 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 Nonpoint Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; TJSEPA, April 1992. Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I I I I I I I 4 o 4 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Primary Objective lI Secondary Objective Targeted Constituents I 1 I I L I I Concrete Curing NS-12 I I 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. Discharges of stormwater and non-stormwater exposed to concrete during curing may have a high pH and may contain chemicals, metals, and fines. Proper procedures reduce or eliminate the contamination of stormwater runoff during concrete curing. Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Suitable Applications Potential Alternatives I Suitable applications include all projects where Portland None Cement Concrete (PCC) and concrete curing chemicals are placed where they can be exposed to rainfall, runoff from other - I areas, or where runoff from the PCC will leave the site. I None Limitations. identified. Implementation I Chemical Curing Avoid over spray of curing compounds. I • Minimize the drift of chemical cure as much as possible by applying the curing compound close to the concrete surface. Apply an amount of compound that covers the surface, but I does not allow any runoff ofthe compound. I AlA rr\ 'cA January 2003 California Stormwatr BMP Handbook 1 of 2 I Construction www.cabmphandbooks.com NS-12 Concrete Curing 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 infiltration or other means of removal in accordance with all applicable permits. Collect cure water at the top of slopes and transport or dispose of water in a non-erodible manner. See EC-9 Earth Dikes and Drainage Swales, EC-io, Velocity Dissipation Devices, and EC-ii, Slope Drains. Utilize wet blankets or a similar method that maintains moisture while minimizing the use and possible discharge of water. 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. While activities associated with the BMP are underway 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-stonnwater discharges occur. Ensure that employees and subcontractors implement appropriate measures for storage, handling, and use of curing compounds. 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), November 2000. Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. I I • Inspect cure containers and sprayingequipment for leaks. References I I I 2 of 2 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I [1 I I I Li I Ll I I I Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Polluon Control Legend: El Primary Objective EI Secondary Objective I I Sediment El Nutrients Trash Metals El Bacteria Oil and Grease Organics El Potential Alternatives None I i Concrete Finishing NS-13 Targeted Constituents 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-stonnWater discharges. I I' Suitable Applications I These procedures apply to all construction locations where concrete finishing operations are performed. Limitations I None identified. Implementation I Collect and properly dispose of water from high-pressure water blasting operations. I i 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 I EC-9, Earth Dikes and Drainage Swales, EC-lo, Velocity Dissipation Devices, and EC-ii, Slope Drains. I AlA CAWCMA STORNTWATFR \&JCI.ViIOS. I January 2003 California Stormwater BMP Handbook 1 of 2 Construction www.cabmphandbooks.com I i NS-13 Concrete Finishing I - 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 De-Watering Operations. I . Protect inlets during sandblasting operations. Refer to SE-lo,. Storm Drain Inlet Protection. Refer to WM-8, Concrete Waste Management for disposal of concrete based debris. I 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. I Costs These measures are generally of low cost. I Inspection and Maintenance a 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 I during the rainy season and at two-week intervals in the non-rainy season to verify continued BMP implementation. I . Inspect BMPs subject to non-stormwater discharges daily while non-stormwâter discharges occur. i i Sweep orvacuum up debris from sandblasting at the end of each shift. a 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 References - I 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. I Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992. I I I 2 o 2 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Polluon Control Legend: El Primary Objective IJ Secondary Objective Targeted Constituents Sediment El Nutrients El Trash El Metals El Bacteria Oil and Grease El Organics El Potential Alternatives None Material Delivery.and Storage WM-1 I I I I I Description and Purpose - I Prevent, reduce, or eliminate the discharge of pollutants from material delivery and storage to the storrnwater system or watercourses by minimizing the storage of hazardous materials I onsite, storing materials in a 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 info rmation 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 1 1 I I I I • Asphalt and concrete components cAl lA SrC)t\4'Vkflr I January 2003 - California Stormwater BMP Handbook 1 of 5 Construction www.cabmphandbooks.com I i WM-1 Material Delivery and Storage 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: Temporary storage area should be located away from vehicular traffic. Material Safety Data Sheets (MSDS) should be supplied for all materials stored. Construction site areas should be designated for material delivery and storage. Material delivery and storage areas should be located near the construction entrances, away from waterways, if possible. - Avoid transport near drainage paths or waterways. - Surround with earth berms. See EC-9, Earth Dikes and Drainage Swales. - Place in an area which 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, NFPA3o. . An up to date inventory of materials delivered and stored onsite should be kept Hazardous materials storage onsite should be minimized. Hazardous materials should be handled as infrequently as possible. During the rainy season, consider storing materials in a covered area. Store materials in secondary containments such as earthen dike, horse trough, or even a children's wading pool for non-reactive materials such as detergents, oil, grease, and paints. Small amounts of material may be secondarily contained in bus boy" trays or concrete mixing trays. Do not store chemicals, drums, or bagged materials directly on the ground. Place these items on a pallet and, when possible, in secondary containment. 2 of 5 California Stormwatr BMP Handbook January 2003 Construction wwwbmphandbooks.com I I I I I I I I I I I [1 I i Material Delivery and Storage WM-1 I . If drums must be kept uncovered, store them at a slight angle to reduce ponding of rainwater on the lids to reduce corrosion. Domed plastic covers are inexpensive and snap to the top of drums, preventing water from collecting. Chemicals should be kept in their original labeled containers. I practices. . Employees and subcontractors should be trained on the proper material delivery and storage Employees trained in emergency spill cleanup procedures must be present when dangerous I materials or liquid chemicals are unloaded. If significant residual materials remain on the ground after construction is complete, properly remove materials and any contaminated soil. See WM-7, Contaminated Soil I 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 I contain precipitation from a 25 year storm event, plus the greater of io% of the aggregate volume of all containers or i00% of the capacity of the largest container within its boundary, whichever is greater. I • A temporary containment facility should be impervious to the materials stored therein for a minimum contact time of 72 hours. 1 . 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 I 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. Im Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility. I • Throughout the rainy season, each temporary containment facility should be covered during non-working days, prior to, and during rain events, I . 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. I - I January 2003 California Stormwatr BMP Handbook - 3 of 5 Construction www.cabmphandbooks.com I i WM-1 Material Delivery and Storage I . 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. I • Materials should be stored indoors within existing structures or sheds when available. • Proper storage instructions should be posted at all times in an open and conspicuous I 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 materials. Material Delivery Practices Keep inventory delivered an accurate, up-to-date of material and stored onsite. • I dangerous Arrange for employees trained in emergency spill cleanup procedures to be present when materials or liquid chemicals are unloaded. Spill Cleanup I • Contain and clean up any spill immediately. • Properly remove and dispose of any hazardous materials or contaminated soil if significant I 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. Cost The largest cost of implementation maybe in the construction of a materials storage area that is covered and provides secondary containment. 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. Keep an ample supply of spill cleanup materials near the storage area. Keep storage areas clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Repair or replace perimeter controls, containment structures, covers, and liners as needed to maintain proper function. 4 o 5 - California Stormwater BMP Handbook January 2003 Construction - wwwbmphandbooks.com I H I j I I H I Material Delivery and Storage. WM-1 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 Nonpoint 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 Practice, EPA 832-R-92005; USEPA, April 1992. January 2003 California Stormwater BMP Handbook 5 of 5 Construction www.cabmphandbooks.com I Material Use WM"-2 I Objectives EC Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Polluöon Conirol I I I Legend: 11 Primary Objective tI Secondary Objective I I Sediment Nutrients El Trash El Metals El Bacteria Oil and Grease El Organics El Potential Alternatives I Targeted Constituents Description and Purpose Prevent or reduce the discharge of pollutants to the storm drain system or watercourses from material use by using alternative products, minimizing hazardous material use onsite, and training employees and subcontractors. Suitable Applications ' This BMP is suitable for use at all construction projects. These procedures apply when the following materials are used or prepared onsite: I • Pesticides and herbicides None I • Fertilizers Detergents I I I I I I I n . Plaster m Petroleum products such as fuel, oil, and grease Asphalt and other concrete components Other 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 - IFS 5NI A .11 QUAI I L-. January 2003 California Stormwatr BMP Handbook 1 of 3 Construction www.cabmphandbooks.com I i WM-2 Material Use I Limitations Safer alternative building and construction products may not be available or suitable in every instance. I Implementation The following steps should be taken to minimize risk: Minimize use of hazardous materials onsite. Follow manufacturer instructions regarding uses, protective equipment, ventilation, I flammability, and mixing of chemicals. - Train personnel who use pesticides. The California Department of Pesticide Regulation and I county agricultural commissioners license pesticide dealers, certify pesticide applicators, and conduct onsite inspections. I . Do not over-apply fertilizers, herbicides, and pesticides. Prepare only the amount needed. Follow the recommended usage instructions. Over-application is expensive and environmentally harmful. Unless on steep slopes, till fertilizers into the soil rather than I hydro seeding. Apply surface dressings in several smaller applications, as opposed to one large application, to allow time for infiltration and to avoid excess material being carried offsite by runoff. Do not apply these chemicals just before it rains. Train employees and subcontractors in proper material use. Supply Material Safety Data Sheets (MSDS) for all materials. Dispose of latex paint and paint cans, used brushes, rags, absorbent materials, and drop cloths, when thoroughly dry and are no longer hazardous, with other construction debris. 1 . Do not remove the original product label; it contains important safety and disposal information. Use the entire product before disposing of the container. Mix paint indoors. or in a containment area. Never clean paintbrushes or rinse paint containers into a street, gutter, storm drain, or watercourse. Dispose of any paint thinners, I residue, and sludge(s) that cannot be recycled, as hazardous waste. . For water-based paint, clean brushes to the extent practicable, and rinse to a drain leading to a sanitary sewer where permitted, or into a concrete washout pit or temporary sediment I trap. For oil-based paints, clean brushes to the extent practicable, and filter and reuse thinners and solvents. I . Use recycled and less hazardous products when practical. Recycle residual paints, solvents, non-treated lumber, and other materials. I i Use materials only where and when needed to complete the construction activity. Use safer alternative materials as much as possible. Reduce or eliminate use of hazardous materials onsite when practical. V I I 2 of 3 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Material Use WM-2 Require contractors to complete the "Report of Chemical Spray Forms" when spraying herbicides and pesticides. Keep an ample supply of spill cleanup material near use areas. Train employees in spill clean up procedures. Avoid exposing applied materials to rainfall and runoff unless sufficient time has been allowed for them to dry. 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 at two—week intervals in the non-rainy season to verify continued BMP implementation. Maintenance of this best management practice is minimal. Spot check employees and subcontractors throughout the jobto ensure appropriate practices are being employed. 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 Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; LJSEPA, 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 Practice, EPA 832-R-92005; IJSEPA, April 1992. I I I I I I I n I I I I I I I I I I January 2003 California Stormwatr BMP Handbook 3 of 3 Construction www.cabmphandbooks.com I I Sto He Management WM-3 Description and Purpose Stockpile Management procedures and practices are designed to reduce or eliminate air and stormwater pollution from stockpiles of soil, 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 materials. Objectives . EC Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: lJ Primary Objective II Secondary Objective Ted Constituents Sediment L1 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None Limitations I None identified. Implementation I Protection of stockpiles is a year-round requirement. To properly manage stockpiles: Locate stockpiles a minimum of 50 ft away from I concentrated flows of stormwater, drainage courses, and inlets. Protect all stockpiles from stormwater runon using a temporary perimeter sediment barrier such as berms, dikes, fiber rolls, silt fences, sandbag gravel bags, or straw bale I barriers. I 14FOR &L{T -1MJON I January 2003 California Stormwatar BMP Handbook 1 of 3 Construction www.cabmphandbooks.com U I I I I 1 I I I I i WM-3 Stockpile Management I .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 I Management. I i Place bagged materials on pallets and under cover. Protection ofNon-Active Stockpiles Non-active stockpiles of the identified materials should be protected further as follows: I Soil stockpiles . During the rainy season, soil stockpiles should be covered or protected with soil stabilization I measures and a temporary perimeter sediment barrier at all times. . During the non-rainy season, soil stockpiles should be covered or protected with a I temporary perimeter sediment barrier prior to the onset of precipitation. Stockpiles ofPortland cement concrete rubble, asphalt concrete, asphalt concrete rubble, I aggregate base, or aggregate sub base . During the rainy season, the stockpiles should be covered or protected with a temporary perimeter sediment barrier at all times. During the non-rainy season, the stockpiles should be covered or protected with a temporary perimeter sediment barrier prior to the onset of precipitation. I Stockpiles of cold mix" U • During the rainy season, cold mix stockpiles should be placed on and covered with plastic or comparable material at all times. 1 • During the non-rainy season, cold mix stockpiles should be placed on and covered with plastic or comparable material prior to the onset of precipitation. 1 Stockpiles/Storage ofpre.ssure treated wood with copper, chromium, and arsenic or ammonical, copper, zinc, and arsenate I . During the rainy season, treated wood should be covered with plastic or comparable material at all times. .During the non-rainy season, treated wood should be covered with plastic or comparable I material at all times and cold mix stockpiles should be placed on and covered with plastic or comparable material prior to the onset of precipitation. I Protection ofActive Stockpiles Active stockpiles of the identified materials should be protected further as follows: I .All stockpiles should be protected with a temporary linear sediment barrier prior to the onset of precipitation. I • Stockpiles of "cold mix" should be placed on and covered with plastic or comparable material prior to the onset of precipitation. I 2 of 3 California Stormwater BMP Handbooks January 2003 Construction www.cabmphandbooks.com I I Stockpile Management WM-3 I Costs All of the above are low cost measures. I 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 I during the rainy season and of two-week intervals in the non-rainy season to verify continued BMP implementation I • Repair and/or replace perimeter controls and covers as needed to keep them functioning properly. References I Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual) State of California Department of Transportation (Caltrans), November 2000. I 1 I IF I I January 2003 California Stormwater BMP Handbook 3 of 3 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: I Primary Objective il Secondary Objective Targeted Constituents I I I I I Spill Prevention and Control WM-4 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. I 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 I following materials: I Soil stabilizers/binders . Dust palliatives I I Sediment El Nutrients El Trash El Metals El Bacteria Oil and Grease El Organics El Potential Alternatives I I I I Herbicides Growth inhibitors Fertilizers Deicing/anti-icing chemicals hi A -11 [1 January 2003 California Stormwater BMP Handbook i of 6 Construction www.cabmphandbooks.com I i Spill Prevention and Control WM-4 I . Fuels Lubricants I • 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. I . Procedures and practices presented in this BMP are general. Contractor should identify appropriate practices for the specific materials used or stored onsite I Implementation The following steps will help reduce the stormwater impacts of leaks and spills: I 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 1 appropriate response for "significant' and "insignificant" spills. Educate employees and subcontractors on potential dangers to humans and the I 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. I General Measures To the extent that the work can be accomplished safely, spills of oil, petroleum products, substances listed under 40 CFR parts 110,117, and 302, and sanitary and septic wastes I should be contained and cleaned up immediately. Store hazardous materials and wastes in covered containers and protect from vandalism. I • Place a stockpile of spill cleanup materials where it will be readily accessible. I . Train employees in spill prevention and cleanup. Designate responsible individuals to oversee and enforce control measures. I • 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. - I 2 of 6 California Stormwathr BMP Handbook January 2003 Construction www.cabmphandbooks.com I i Spill Prevention and Control WM-4 I • 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-io, Liquid I Waste Management. : Contain water overflow or minor water spillage and do not allow it to discharge into I . 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. I .. Keep waste storage areas clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Perimeter controls, containment structures, I covers, and liners should be repaired or replaced as needed to maintain proper function. Cleanup I . 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 1 materials are also hazardous and must be sent to either a certified laundry (rags) or disposed of as hazardous waste. I . Never hose down or bury dry material spills. Cleanup as much of the material as possible and dispose of properly. See the waste management BMPs in this section for specific information. I 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. I • Absorbent materials should be promptly removed and disposed of properly. I . 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. I 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 I . cessation of all other activities. I January2003 California Stormwater BMP Handbook 3of6 Construction www.cabmphandbooks.com I n ill Prevention and Control WM-4 I . Spills should be cleaned up immediately: - Contain spread ofthe spill. I - Notify the project foreman immediately. - If the spill occurs on paved or impermeable surfaces, clean up using "dry" methods 1 (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. I Significant/Hazardous Spills . For significant or hazardous spills that cannot be controlled by personnel in the immediate vicinity, the following steps should be taken: I - 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 I emergency phone numbers at the construction site. - Notify the Governor's Office of Emergency Services Warning Center, (916) 845-8911. I - 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. I - 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. I Construction personnel should not attempt to clean up until the appropriate and qualified staffs have arrived at the job site. I - 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 I Oil and Gas, Cal/OSHA, etc. Reporting I . Report significant spills to local agencies, such as the Fire Department; they can assist in cleanup.- I . 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:- : I 4 o 6 California Stormwathr BMP Handbook January 2003 Construction - www.cabmphandbooks.com I i Spill Prevention and Control WM-4 Vehicle and Equipment Main ten ance I 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 I spills. Regularly inspect onsite vehicles and equipment for leaks and repair immediately I 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. I drain drop leaks Always use secondary containment, such as a pan or cloth, to catch spills or when removing or changing fluids. I • Place drip pans or absorbent materials under paving equipment when not inuse. I Remove Use absorbent materials on small spills rather than hosing down or burying the spill. the absorbent materials and dispose of promptly properly. Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip I 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. I 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 I . 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. I Vehicle and Equipment Fueling If fueling must occur onsite, use designate areas, located away from drainage courses, to I prevent the runon of stormwater and the runoff of spills. "topping Discourage off' of fuel tanks. I • 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 I or water can be quite expensive. Inspection and Maintenance I 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 I during the rainy season and of two-week intervals in the non-rainy season to verify continued BMP implementation. I occur. Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges January 2003 California Stormwatr BMP Handbook 5 of 6 I Construction www.cabmphandbooks.com I i Spill Prevention and Control WM-4 I • Keep ample supplies of spill control and cleanup materials onsite, near storage, unloading and maintenance areas. I •Update your spill prevention and control plan and stock cleanup materials as changes occur in the types of chemicals onsite. References I 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. I Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; TJSEPA, April 1992. p I I I I I 6 of 6 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Targeted Constituents Sediment El Nutrients El Trash El Metals El Bacteria Oil and Grease El Organics El Potential Alternatives None• Objectives EC Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Polluon Control Legend: El Primary Objective Secondary Objective I I I I I Li Description and Purpose I 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 I collection areas and containers, arranging for regular disposal, and training employees and subcontractors. I Suitable Applications This BMP is suitable for construction sites where the following 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 I • Scrap or surplus building materials including scrap metals, rubber, plastic, glass pieces and masonry products I • 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, styrofoamand other materials used to transport and package construction materials . January 2003 California Stormwatr BMP Handbook 1 of 4 Construction www.cabmphandbooks.com I I I I I WM7 5 Solid Waste Management Highway planting wastes, including vegetative material, plant containers, and packaging I materials Limitations I 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. I Implementation The following steps will help keep a clean site and reduce stormwater pollution: I • Select designated waste collection areas onsite. Inform trash-hauling contractors that you will accept only watertight dumpsters for onsite I use. Inspect dumpsters for leaks and repair any dumpster that is not watertight. Locate containers in a covered area or in a secondary containment. I • 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. I . Plan for additional containers and more frequent pickup during the demolition phase of construction. I Collect site trash daily, especially during rainy and windy conditions. .Remove this solid waste promptly since erosion and sediment control devices tend to collect I 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 I construction debris. Do not hose out dumpsters on the construction site. Leave dumpster cleaning to tha trash I hauling contractor. Arrange for regular waste collection before containers overflow. I • Cleanup immediately if a container does spill. - Make sure that construction waste is collected, removed, and disposed of only at authorized disposal areas. Education I . Have the contractor's superintendent or representative oversee and enforce proper solid waste management procedures and practices. I . Instruct employees and subcontractors on identification of solid waste and hazardous waste. .Educate employees and subcontractors on solid waste storage and disposal procedures. I I 2 of 4 California Stormwatr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I Solid Waste Management WM-5 Hold regular meetings to discuss and reinforce disposal procedures (incorporate, into regular safety meetings). 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 sh6u1d be collected I 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, stormwater drainage systems, or watercourses. I . Dumpsters be to thé of sufficient size and number should provided contain solid waste generated by the project. I • 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 I elevate waste from site surfaces. I watercourses • Solid waste storage areas should be located at least 50 ft from drainage facilities and and should not be located in areas to flooding or prone ponding. • Except during fair weather, ' construction and highway planting waste not stored in I 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• I . construction debris. I January 2003 California StormwatBr BMP Handbook 3 of 4 Construction www.cabmphandbooks.com I I I I I WM-5 Solid Waste Management For disposal of hazardous waste, see WM-6, Hazardous Waste Management. Have hazardous waste hauled to an appropriate disposal and/or recycling facility. 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. i 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, IJSEPA, 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; IJSEPA, April 1992. I I i 1 I I I I I I I I I I r, 1 I I 4of 4 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Objectives EC. Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Mateals Polluthn Control Legend: El Primary Objective El Secondary Objective 1 I I I I 4Zq 10 AMAKE Metals El Bacteria El Oil and Grease El Organics El Potential Alternatives None I i Contaminated Soil Management WM-7 Description and Purpose Prevent or reduce the discharge of pollutants to stormwater Targeted Constituents from contaminated soil and highly acidic or alkaline soils by Sediment conducting pre-construction surveys, inspecting excavations Nutrients El regularly, and remediating contaminated soil promptly. Trash LI I Suitable Applications Contaminated soil management is implemented on construction projects in highly urbanized or industrial areas where soil contamination may have occurred due to spills, illicit discharges, aerial deposition, past use and leaks from underground storage tanks. Limitations Contaminated soils that cannot be treated onsite must be disposed of offsite by a licensed hazardous waste hauler. The presence of contaminated soil may indicate contaminated water as well. See NS-2, Dewatering Operations, for more information. The procedures and practices presented in this BMP are general. The contractor should identify appropriate practices and procedures for the specific contaminants known to exist or discovered onsite. I I I I I Implementation Most owners and developers conduct pre-construction environmental assessments as a matter of routine. Contaminated soils are often identified during project planning and development with known locations identified in the plans, specifications and in the SWPPP. The contractor should review applicable reports and investigate appropriate call-outs inthe plans, specifications, and A A - N ........... January 2003 California Stormwatr BMP Handbook 1 of 5 Construction www.cabmphandbooks.com I I I I I Contaminated Soil Management WM-7 SWPPP. Recent court rulings holding contractors liable for cleanup costs when they 1 unknowingly move contaminated soil highlight the need for contractors to confirm a site assessment is completed before earth moving begins. The following steps will help reduce stormwater pollution from contaminated soil: Conduct thorough, pre-construction inspections of the site and review documents related to I the site. If inspection or reviews indicated presence of contaminated soils, develop a plan before starting work. I • Look for contaminated soil as evidenced by discoloration, odors, differences in soil properties, abandoned underground tanks or pipes, or buried debris. Prevent leaks and spills. Contaminated soil cthi be expensive to treat and dispose of I properly. However, addressing the problem before construction is much less expensive than after the structures are in place. The contractor may further identify contaminated soils by investigating - Past site uses and activities I - Detected or undetected spills and leaks - Acid or alkaline solutions from exposed soil or rock formations high in acid or alkaline I forming elements - Contaminated soil as evidenced by discoloration, odors, differences in soil properties, I abandoned underground tanks or pipes, or buried debris. Suspected soils should be tested at a certified laboratory. I Education Have employees and subcontractors complete a safety training program which meets 29 CFR 1910.120 and 8 CCR 5192 covering the potential haards as identified, prior to I performing any excavation work at the locations containing material classified as hazardous. Educate employees and subcontractors in identification of contaminated soil and on I contaminated soil handling and disposal procedures. Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular I safety meetings). Handling Procedures for Material with Aerially Deposited Lead (ADL) I . Materials from areas designated as containing (ADL) may, if allowed by the contract special provisions, be excavated, transported, and used in the construction of embankments and/or backfilL Excavation, transportation, and placement operations should result in no visible dust. Caution should be exercised to prevent spillage of lead containing material during transport. 2o15 California Stormwater BMP Handbook January 2003 Construction I www.cabmphandbooks.com I I Contaminated Soil Management WM-7 I m Quality should be monitored during excavation of soils contaminated with lead. Handling Procedures for Contaminated Soils I • Minimize onsite storage. Contaminated soil should be disposed of properly in accordance with allapplicable regulations. All hazardous waste storage will comply with the requirements in Title 22, CCR, Sections 66265.250 to 66265.260. I . Test suspected soils at an approved certified laboratory. . Work with the local regulatory agencies to develop options for treatment or disposal if the I soil is contaminated. . Avoid temporary stockpiling of contaminated soils or hazardous material. I . Take the following precautions if temporary stockpiling is necessary: I - Cover the stockpile with plastic sheeting or tarps. - Install a berm around the stockpile to prevent runoff from leaving the area. I Do not stockpile in or near storm drains or watercourses. Remove contaminated material and hazardous material on exteriors of transport vehicles I and place either into the current transport vehicle or into the excavation prior to the vehicle leaving the exclusion zone. I • Monitor the air quality continuously during excavation operations at all locations containing hazardous material. . Procure all permits and licenses, pay all charges and fees, and give all notices necessary and I incident to the due and lawful prosecution of the work, including registration for transporting vehicles carrying the contaminated material and the hazardous material. I . Collect water from decontamination procedures and treat or dispose of it at an appropriate disposal site. I . Collect non-reusable protective equipment, once used by any personnel, and dispose of at an appropriate disposal site. . Install temporary security fence to surround and secure the exclusion zone. Remove fencing I when no longer needed. Excavate, transport, and dispose of contaminated material and hazardous material in I accordance with the rules and regulations of the following agencies (the specifications of these agencies supersede the procedures outlined in this BMP): 1 - United States Department of Transportation (USDOT) - United States Environmental Protection Agency (USEPA) - California Environmental Protection Agency (CAL-EPA) I January 2003 California Stormwatr BMP Handbook 3 of 5 Construction www.cabmphandbooks.com I i Contaminated Soil Management WM-7 I - California Division of Occupation Safety and Health Administration (CAL-OSHA) - Local regulatory agencies I Procedures for Underground Storage Tank Removals Prior to commencing tank removal operations, obtain the required underground storage I tank removal permits and approval from the federal, state, and local agencies that have jurisdiction over such work. To determine if it contains hazardous substances, arrange to have tested, any liquid or I sludge found in the underground tank prior to its removal. Following the tank removal, take soil samples beneath the excavated tank and perform 1 analysis as required by the local agency representative(s). The underground storage tank, any liquid or sludge found within the tank, and all I contaminated substances and hazardous substances removed during the tank removal and transported to disposal facilities permitted to accept such waste. Water Control All necessary precautions and preventive measures should be taken to prevent the flow of water, including ground water, from mixing with hazardous substances or underground storage tank excavations. Such preventative measures may consist of, but are not limited to, berms, cofferdams, grout curtains, freeze walls, and seal course concrete or any combination thereof. If water does enter an excavation and becomes contaminated, such water, when necessary to proceed with the work, should be discharged to clean, closed top, watertight transportable holding tanks, treated, and disposed of in accordance with federal, state, and local laws. Costs Prevention of leaks and spills is inexpensive. Treatment or disposal of contaminated soil 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. Arrange for contractor's Water Pollution Control Manager, foreman, and/or construction supervisor to monitor onsite contaminated soil storage and disposal procedures. Monitor air quality continuously during excavation operations at all locations containing hazardous material. Coordinate contaminated soils and hazardous substances/waste management with the appropriate federal, state, and local agencies. 4 of 5 California Stormwar BMP Handbook . January 2003 Construction www.cabmphandbooks.com I I I LI I I I I I I Contaminated Soil Management WM-7 Implement WM-4, Spill Prevention and Control, to prevent leaks and spills as much as possible. References' Blueprint for a Clean Bay: Best Management Practices to Prevent Storinwater 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. January 2003 California Stormwater BMP Handbook 5 of 5 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment. Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: I1 Primary Objective iI Secondary Objective I I I I I I Concrete Waste Management WM-8 — Targeted Constituents Description and Purpose I Prevent or reduce the discharge of pollutants to stormwater Sediment Nutrients from concrete waste by conducting washout offsite, performing Trash onsite washout in a designated area, and training employee and Metals El I subcontractors. Bacteria Suitable Applications Oil and Grease I Concrete waste management procedures and practices are Organics implemented on construction projects where: I • Concrete is used as a construction material or where Potential Alternatives concrete dust and debris resuitform demolition activities I . Slurries containing portland cement concrete (PCC) or asphalt concrete (AC) are generated, such as from saw cutting coring, grinding, grooving, and hydro-concrete I demolition Concrete trucks and other concrete-coated equipment are washed onsite Mortar-mixing stations exist I . See also NS-8, Vehicle and Equipment Cleaniig Limitations I • Offsite washout of concrete wastes may not always be possible. I A. OLRrORMWATL )liALiTY I January 2003 California Stormwatr BMP Handbook 1 of 7 Construction www.cabmphandbooks.com I i WM-8 Concrete Waste Management I Implementation The following steps will help reduce stormwater pollution from concrete wastes: 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. Incorporate requirements for concrete waste management into material supplier and subcontractor agreements. Store dry and wet materials under cover, away from drainage areas. Avoid mixing excess amounts of fresh concrete. Perform washout of concrete trucks offsite or in designated areas only I • Do not wash out concrete trucks into storm drains, open ditches, streets, or streams. Do not allow excess concrete to be dumped onsite, except in designated areas. I • For onsite washout: - Locate washout area 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 I enough for liquid and solid waste. - Wash out wastes into the temporary pit where the concrete can set, be broken up, and I then disposed properly. Avoid creating runoff by draining water to a bermed or level area when washing concrete to I remove fine particles and expose the aggregate. Do not wash sweepings from exposed aggregate concrete into the street or storm drain. I Collect and return sweepings to aggregate base stockpile or dispose in the trash. Education I • Educate employees, subcontractors, and suppliers on the concrete waste management techniques described herein. Arrange for contractor's superintendent or representative to oversee and enforce concrete I waste management procedures. 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 I washout facility. A sign should be installed adjacent to each temporary concrete washout facility to inform concrete equipment operators to utilize the proper facilities. I 2 of 7 California Stormwalr BMP Handbook January 2003 Construction www.cabmphandbooks.com I i Concrete Waste Management WM-8 Below grade concrete washout facilities are typical. Above grade facilities are used if excavation is not practical. I • 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 PCC slurry should not be allowed to enter storm drains or watercourses. Residue I from grinding operations should be picked up by means of a vacuum attachment to the grinding machine. 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 I Operations; and WM-io, Liquid Waste Management. Slurry residue should be vacuumed and disposed in a temporary pit (as described in OnSite I' 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. I Onsite Temporary Concrete Washout Facility, Transit Truck Washout Procedures I • 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. I . A sign should be installed adjacent to each washout facility to inform concrete equipment operators to utilize the proper facilities. I • 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 I generated by washout operations. Temporary washout facilities should have a temporary pit or bermed areas of sufficient I volume to completely contain all liquid and waste concrete materials generated during washout procedures. Washout of concrete trucks should be performed in designated areas only. Only concrete from mixer truck chutes should be washed into concrete wash out. I . Concrete washout from concrete pumper bins can be washed into concrete pumper trucks and discharged into designated washout area or properly disposed of offsite. I • 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-, Solid Waste Management. Dispose of 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 I on the details at the end ofthisBMP, with areconunended minimum length and I January 2003 California Stormwatr BMP Handbook 3 of 7 Construction www.cabmphandbooks.com I WM-8 Concrete Waste Management minimum width of io ft, but with sufficient quantity and volume to contain all liquid and concrete waste generated by washout operations. - Straw bales, wood stakes, and sandbag materials should conform to the provisions in SE- 9, Straw Bale 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. 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. 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 disposed of Materials used to construct temporary concrete washout facilities should be removed from the site of the work and disposed of. Holes, depressions or other ground disturbance caused by the removal of the temporary concrete washout facilities should be backfiled and repaired. 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. is 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 disposed of. Washout facilities must be cleaned, or new facilities must be constructed and ready for use once the washout is 75% full. 4 o 7 California Stormwatr BMP Handbook January 2003 Construction www.cabmphandbooks.com U I Li I 1 I I I Li I I I I Concrete Waste Management WM-8 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. Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; IJSEPA, April 1992. January 2003 California Stormwater BMP Handbook 5 of 7 Construction www.cabmphandbooks.com 1 Wm-8 Concrete Waste Management LATH &\ 10 FLAGGING \ ON ALL MIN SANDBAG SIDES SIDES BERMOD 0 0 fl SANDBAG-7 10 MIL I .. PLASTIC LINING BERM I / . . SECTION A-A 10 MIL / NOT TO SCALE PLASTIC LINING -7 1 PLAN . NOT TO SCALE TYPE "BELOW GRADE" . I . . 10 MIL PLASTIC LINING .1.. . iMIN .I E3 . WOOD FRAME SECURELY FASTENED AROUND ENTIRE PERIMETER WITH TWO STAKES SECTION Q--E3 NOT TO SCALE • "-STAKE (TYP) J 1O MIL NOTES I TWO -STACKED PLASTIC X 12 ROUGH LINING2 1. ACTUAL LAYOUT DETERMINED WOOD FRAME PLAN IN FIELD. NOT TO SCALE 2, THE CONCRETE WASHOUT SIGN I TYPE 'ABOVE GRADE" SHALL RE INSTALLED WITHIN 30 FT. OF THE TEMPORARY CONCRETE WASHOUT FACILITY. 6 of 7 California Stormwatr BMP Handbook . January 2003 Construction www.ca 2" 1/a" DIA. 422 STEEL WIRE —fl7:] STAPLE DETAIL A K E YP) Concrete Waste Management WM-8 RAW BALE i YP) PLYWOOD 48" X 24" PAINTED WHITE ILl IVIlL.. PLASTIC LINING PLAN NOT TO SCALE TYPE ABOVE GRADE" WITH STRAW BALES 3' WOOD POST 3" X 3" X 8' 3, CONCRETE WASHOUT' BLACK LETTERS 6" HEIGHT 0.5" LAG SCREWS CONCRETE WASHOUT SIGN DETAIL (OR EQUIVALENT) BINDING WIRE STRAW BALE NOTES ACTUAL LAYOUT DETERMINED IN FIELD. THE CONCRETE WASHOUT SIGN SHALL BE INSTALLED WITHIN 30 FT, OF THE TEMPORARY CONCRETE WASHOUT FACILITY. STAPLES (2 PER BALE) 10 MIL PLASTIC LINING NATIVE MATERIAL (OPTIONAL) \ WOOD OR—" - METAL STAKES (2 PER BALE) SECTION B-B NOT TO SCALE January 2003 California Stormwatr BMP Handbook 7017 Construction www.cabmphandbooks.com Objectives EC Erosion Control SE Sediment Control IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste. Management and materials Polluon Control Legend: 121 Primary Objective lI Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics 121 Potential Alternatives None I i Sanitary/Septic Waste Management WM-9 F 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. I Implementation Sanitary or septic wastes should be treated or disposed of in I .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. I Storage and Disposal Procedures Temporary sanitary facilities should be located away from I . drainage facilities, watercourses, and from traffic circulation. When subjected to high winds or risk of high winds, temporary sanitary facilities should be secured to I prevent overturning. Wastewater should not be discharged or buried within the project site. I. I I I I I I I I I January 2003 California Stormwar BMP Handbook lof 3 Construction www.cabmphandbooks.com I u WM-9 Sanitary/Septic Waste Management I . 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. I . Sanitary facilities should be located in a convenient location. .Untreated raw wastewater should never be discharged or buried. 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. 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 disposal procedures (incorporate into regular safety meetings). • Establish a continuing education program to indoctrinate new employees. 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. 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. 2 of 3 California Stormwathr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I II I I I I I I I I I I I 3 of 3 Sanitary/Septic Waste Management WM-9 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 Practice, EPA 832-R-92005; USEPA, April 1992. Silt Fence SE-i. Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Targeted Constituents Sediment El Nutrients Trash Metals Bacteria Oil and Grease Suitable Applications Organics I Silt fences are suitable for perimeter control, placed below areas where sheet flows discharge from the site. They should also be used as interior controls below disturbed areas where Potential Alternatives I runoff may occur in the form of sheet and rill erosion. SE-5 Fiber Rolls fences are generally ineffective in locations where the flow is SE-6 Gravel Bag Berm I concentrated and are only applicable for sheet or overland flows. Silt fences are most effective when used in combination SE-8 Sandbag Barrier with erosion controls. Suitable applications include: SE-9 Straw Bale Barrier 1 . Along the perimeter of a project. Below the toe or down slope of exposed and erodible slopes. I m Along streams and channels. I . Around temporary spoil areas and stockpiles. Below other small cleared areas. I Limitations Do not use in streams, channels, drain inlets, or anywhere flow is concentrated. Sig I January 2003 California Stormwater BMP Handbook 1 of 8 Construction www.cabmphandbooks.com I I I I I Li I I Legend: El Primary Objective I Secondary Objective Description and Purpose I A silt fence is made of a filter fabric 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. Silt Fence . Do not use in locations where ponded water may cause flooding. Do not place fence on a slope, or across any contour line. If not installed at the same elevation throughout, silt fences will create erosion. Filter fences will create a temporary sedimentation pond on the upstream side of the fence and may cause temporary flooding. Fences not constructed on a level contour will be overtopped by concentrated flow resulting in failure of the filter fence. Improperly installed fences are subject to failure from undercutting, overlapping, or collapsing. - Not effective unless trenched and keyed in. - Not intended for use as mid-slope protection on slopes greater than :i (H:V). - Do not allow water depth to exceed 1.5 ft at any point. Implementation General A silt fence is a temporary sediment barrier consisting of filter fabric stretched across and attached to supporting posts, entrenched, 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. I Silt fences are preferable to straw bale barriers in many cases. Laboratory work at the Virginia Highway and Transportation Research Council has shown that silt fences can trap a much higher percentage of suspended sediments than can straw bales. While the failure rate of silt I .fences is lower than that of straw bale barriers, there are many instances where silt fences have been improperly installed. The following layout and installation guidance can improve performance and should be followed: Use principally in areas where sheet flow occurs. Don't use in streams, channels, or anywhere flow is concentrated. Don't use silt fences to I divert flow. . I . Don't use below slopes subject to creep, slumping, or landslides. Select filter fabric that retains 8% of soil by weight, based on sieve analysis, but that is not finer than an equivalent opening size of 70. I • 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 i:i. I 2 of 8 . California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com El I I I I I I 1 1 I Silt Fence SE-i I . 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. I . 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 I feasible. Silt fences should remain in place until the disturbed area is permanently stabilized. I Design and Layout * Selection of a filter fabric is based on soil conditions at the construction site (which affect the I equivalent opening size (EOS) fabric specification) and characteristics of the support fence (which affect the choice of tensile strength). The designer should specify a filter fabric that retains the soil found on the construction site yet that it has openings large enough to permit I drainage and prevent clogging. The following criteria is recommended for selection of the equivalent opening size: If 50 percent or less of the soil, by weight, will pass the U.S. Standard Sieve No. 200, I select the EOS to retain 85 % of the soil. The EOS should not be finer than EOS 70. 2. For I all other soil types, the EOS should be no larger than the openings in the U.S. Standard Sieve No. 70 except where direct discharge to a stream, lake, or wetland will occur, then the EOS should be no larger than Standard Sieve No. 100. I To reduce the chance of clogging, it is preferable to specify a fabric with openings as large as allowed by the criteria. No fabric should be specified with an EOS smaller than U.S. Standard Sieve No. 100. If 85% or more of a soil, by weight, passes through the openings in a No. 200 I sieve, filter fabric should not be used. Most of the particles in such a soil would not be retained if the EOS was too large and they would clog the fabric quickly if the EOS were small enough to capture the soil. 1 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 I . recommended by the fabric manufacturer). Filter fabric 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. I • 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 I 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. I . For slopes adjacent to sensitive receiving waters or Environmentally Sensitive Areas (ESAs), silt fence should be used in conjunction with erosion control BMPs. I I . January 2003 California Stormwater BMP Handbook . 3 of 8 Construction www.cabmphandbooks.com 1 SE-1 Silt Fence I Materials . Silt fence fabric should be woven polypropylene with a minimum width of 36 in. and a minimum tensile strength of 100 lb force. The fabric should conform to the requirements in I ASTM designation D4632 and should have an integral reinforcement layer. The reinforcement layer should be a polypropylene, or equivalent, net provided by the manufacturer. The permittivity of the fabric should be between 0.1 sec-1 and 0.15 sec-1 in I 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. I . 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 offence should be 9 gauge or heavier wire. I Galvanizing of the fastening wire will not be required. . There are new products that may use prefabricated plastic holders for the silt fence and use I 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. I Installation Guidelines 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 the proposed silt fence. 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 filter fabric 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 filter fabric and closer post spacing are used, the mesh support fence may be eliminated. Filter fabric should be purchased in a long roll, and then cut to the length of the barrier. When joints are necessary, filter cloth 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 backfllled with compacted native material. Construct silt fences with a setback of at least 3 ft from the toe of a slope. Where a silt fence is determined to be not practicable due to specific site conditions, the silt fence may be constructed at the 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 difficult to maintain. 4of 8 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I - 1 I [7] I I I i Silt Fence SE-i 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. Costs Average annual cost for installation and maintenance (assumes 6 month useful life): $'i per lineal foot ($850 per drainage acre). Range of cost is $3.50 - $9.10 per lineal foot. 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. Repair undercut silt fences. Repair or replace split, torn, slumping, or weathered fabric. The lifespan of silt fence fabric is generally to 8 months. Silt fences that are damaged and become unsuitable for the intended purpose should be removed from the site of work, disposed of, and replaced with new silt fence barriers. Sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. Sediment removed during maintenance may be incorporated into earthwork on the site or disposed at an appropriate location. Silt fences should be left in place until the upstream area is permanently stabilized. Until then, the silt fence must be inspeèted and maintained. Holes, depressions, or other ground disturbance caused by the removal of the silt fences should be backfilled and repaired. 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 Nonpoint 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), November 2000. I . January 2003 California Stormwater BMP Handbook 5 of 8 Construction www.cabmphandbooks.com 1 LI I I I I I I I I I LI I I 1 I P SE-1 Silt Fence 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. 6 of 8 California Stormwater BMPHandbook January 2003 Construction www.cabmphandbooks.com I (D Cross barrier (See note 10) / Toe of slope 0 LEGEND Tamped backfill Slope direction Direction of flow Max reach = 600 (See note 1) Optional maintenance op en Fabric Cross ba PLA SILT FE — — — — — — — — — — — — — — — — — — NOTES fen ce Construct the length of each reach so that the change in base [Silt elevation along the reach dads not exceed 1/3 the height of the linear b arrier, in no case shall the reach length exceed 500. The lost 8-0" of fence shall be turned up slope. Stoke dimensions ore nominal. T:e of slope Dimension may vary to fit field condition. Stokes shall be spaced at 8-0" maximum and shall be El • positioned on downstream side offence. . Stakes to overlap and fence fabric to fold around each stoke CROSS BARRIER DETAIL one full turn. Secure fabric to stake with 4 staples. Stakes shall be driven tightly together to .prevent potential flow—through of sediment at joint. . The taps of the stokes shall be secured with wire. Sandbags For end stoke, fence fabric shall be folded around two stakes one full turn and secured with 4 staples. Minimum 4 staples per stake. Dimensions shown are typical. Cross barriers shall be a minimum of 1/3 and a maximum of 1/2 the See note 10 height of the linear barrier. 11.. Maintenance openings shall be constructed in a manner to ensure sediment remains behind silt fence. Joining sections shall not be placed at sump locations. SECTION C-C Sandbag rows and layers shall be offset to eliminate gaps. DETAIL A End stake (See "note 2) END DETAIL — — — — — — — — — — — — — — — — — — — 00 (l 00 Fn . I Toe of slope Slope-1 i Setback varies (See note 4) F2" (See notes 3 & 5) X 2" Wood stake See detail A Fabric section B (See notes 6, 7 & 12) Stoke B toke Fabric section A* A (See notes 6, 7 & 12) JOINING SECTION DETAIL (TOP VIEW) ' 2" e 2" wood stoke (See note 3) Fabric (See note 8) END STAKE DETAIL (TOP VIEW) LEGEND Tomped bockfill Slope direction Direction of flow 1/16 diameter (SEE NOTE 9) -Fabric Stoke Stoke - Fabric Li End stoke Toe of slope End stake 0 Soodbogs (2—layers high) OPTIONAL MAINTENANCE OPENING DETAIL (SEE NOTE ii) p 1 i Check Dams SE-4 Li I Legend: 11 Primary Objective IE Secondary Objective I Li Description and Purpose I A check dam is a small barrier constructed of rock, gravel bags, sandbags,-fiber rolls, or reusable products, placed across a constructed swale or drainage ditch. Check dams reduce the I effective slope of the channel, thereby reducing the velocity of flowing water, allowing sediment to settle and reducing erosion. I Suitable Applications Check dams may be appropriate in the following situations: . To promote sedimentation behind the dam. SE-5 Fiber Rolls To prevent erosion by reducmg the velocity of channel flow in small intermittent channels and temporary swales. - SE-6 Gravel Bag Berm SE-8 Sandbag Barrier r In small open channels that drain 10-acres or less. In steep channels where stormwater runoff velocities exceed 5 ft/s. I I During the establishment of grass linings in drainage ditches or channels. In temporary ditches where the short length of service does I not warrant establishment of erosion-resistant linings. Limitations - - Not to be used in live streams or in channels with extended base flows. I CAI k1OMWATEA qUA \ '' ½ I ½ I_January 2003 California StormwatBr BMP Handbook 1 of 5 - - Construction www.cabmphandbooks.com I Objectives EC Erosion Control SE Sediment Control TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control I FJ I Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives 1 I SE-4 Check Dams Not appropriate in channels that drain areas greater than 10 acres. Not appropriate in channels that are already grass-lined unless erosion is expected, as J installation may damage vegetation. Require extensive maintenance following high velocity flows. Promotes sediment trapping which can be re-suspended during subsequent storms or removal of the check dam. I Implementation General Check dams reduce the effective slope and create small pools in swales and ditches that drain 10 I acres or less. Reduced slopes reduce the velocity of stormwater flows, thus reducing erosion of the swale or ditch and promoting sedimentation. Use of check dams for sedimentation will likely result in little net removal of sediment because of the small detention time and probable I scour during longer storms. Using a series of check dams will generally increase their effectiveness. A sediment trap (SE-3) may be placed immediately upstream of the check dam to increase sediment removal efficiency. I Design and Layout Check dams work by decreasing the effective slope in ditches and swales An important I consequence of the reduced slope is a reduction in capacity of the ditch or swale. This reduction in capacity must be considered when using this BMP, as reduced capacity can result in overtopping of the ditch or swale and resultant consequences. In some cases, such as a I 'permanent" ditch or swale being constructed early and used as a "temporary" conveyance for construction flows, the ditch or swale may have sufficient capacity such that the temporary reduction in capacity due to check dams is acceptable. When check dams reduce capacities ' beyond acceptable limits, there are several options: Don't use check dams. Consider alternative BMPs. I • Increase the size of the ditch or swale to restore capacity. Maximum slope and velocity reduction is achieved when the toe of the upstream dam is at the same elevation as the top of the downstream dam. The center section of the dam should be lower than the edge sections so that the check dam will direct flows to the center of the ditch or swale. Check dams are usually constructed of rock, gravel bags, sandbags, and fiber rolls. A number of products manufactured specifically for use as check dams are also being used, and some of these products can be removed and reused. Check dams can also be constructed of logs or lumber, and have the advantage of a longer lifespan when compared to gravel bags, sandbags, and fiber rolls. Straw bales can also be used for check dams and can work if correctly installed; but in practice, straw bale check dams have a high failure rate. Check dams should not be constructed from straw bales or silt fences, since concentrated flows quickly wash out these materials. Rock check dams are usually constructed of 8 to 12 in. rock. The rock is placed either by hand or mechanically, but never just dumped into the channel. The dam must completely span the ditch 2 of 5 California StormwatEr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I 1 Check Dams SE-4 or swale to prevent washout. The rock used must be large enough to stay in place given the expected design flow through the channel. Log check dams are usually constructed of 4 to 6 in. diameter logs. The logs should be embedded into the soil at least 18 in. Logs can be bolted or wired to vertical support logs that have been driven or buried into the soil. Gravel bag and sandbag check dams are constructed by stacking bags across the ditch or swale, shaped as shown in the drawings at the end of this fact sheet. Manufactured products should be installed in accordance with the manufacturer's instructions. If grass is planted to stabilize the ditch or swale, the check dam should be removed when the grass has matured (unless the slope of the swales is greater than 4%). The following guidance should be followed for the design and layout of check dams: Install the first check dam approximately 16 ft from the oulfall device and at regular intervals based on slope gradient and soil type. Check dams should be placed at a distance and height to allow small pools to form between each check dam. Backwater from a downstream check dam should reach the toes of the upstream check dam. A sediment trap provided immediately upstream of the check dam will help capture sediment. Due to the potential for this sediment to be resuspended in subsequent storms, the sediment trap must be cleaned follOwing each storm event. - High flows (typically a 2-year storm or larger) should safely flow over the check dam without an increase in upstream flooding or damage to the check dam. Where grass is used to line ditches, check dams should be removed when grass has matured I sufficiently to protect the ditch or swale. Gravel bags may be used as check dams with the following specifications: Materials Gravel bags used for check dams should conform to the requirements of SE-6, Gravel Bag Berms. Sandbags used for check dams should conform to SE-8, Sandbag Barrier. Fiber rolls used for check dams should conform to SE-5, Fiber Rolls. Straw bales used for check dams should conform to SE-9, Straw Bale Barrier. - Installation Rock should be placed individually by hand or by mechanical methods (no dumping of rock) to achieve complete ditch or swale coverage. • Tightly abut bags and stack according to detail shown in the figure at the end of this section. ' Gravel bags and sandbags should not be stacked any higher than 3 ft. Fiber rolls and straw bales must be trenched in and firmly staked in place. I January 2003 California Stormwathr BMP Handbook 3 of 5 Construction www.cabmphandbooks.com I I SE-4 Check Dams Costs Cost consists of only installation costs if materials are readily available. If material must be imported, costs may increase. For material costs, see SE-5, SE-6, SE-8 and SE-9. 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. Replace missing rock, bags, bales, etc. Replace bags or bales that have degraded or have become damaged. If the check dam is used as a sediment capture device, sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. Sediment removed during maintenance may be incorporated into earthwork on the site or disposed at an appropriate location. 1 • If the check dam is used as a grade control structure, sediment removal is not required as long as the system continues to control the grade. I . Remove accumulated sediment prior to permanent seeding or soil stabilization. I . Remove check dam and accumulated sediment when check dams are no longer needed. References Draft - Sedimentation and Erosion Control, and Inventory of Current Practices, IJSEPA, April 1990. Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area 1 Governments, May 1995. 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. I I I I 4-of 5 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com ELEVATION 8" to 19" diamel F LI Check Dams SE-4 TYHCAL ROCK CHECK DAM SECTI ON ROCK CHECK DAM NOT TO SCALE GRAVEL BAG CHECK DAM ELEVATI ON NOT TO SCALE January 2003 California Stormwater BMP Handbook 5 of 5 Construction www.cabmphandbooks.com Hi I Legend: i Primary Objective Il Secondary Objective I I Around temporary stockpiles Limitations Fiber rolls are not effective unless trenched I 1 of 4 January 2003 California Stormwater BMP Handbook Construction www.cabmphandbooks.com Fiber Rolls SE-5 Objectives EC Erosion Control tI IL. SE Sediment Control E1 I... ,- TR Tracking Control WE Wind Erosion Control -- NS Management Control WM Waste Management Description and Purpose A fiber roll consists of straw, flax, or other similar materials bound into a tight tubular roll. When fiber rolls are placed at the toe and on the face of slopes, they intercept runoff; reduce its flow velocity, release the runoff as sheet flow, and provide removal of sediment from the runoff. By interrupting the length of a slope fiber rolls can also reduce erosion. 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 a Down-slope of exposed soil areas I cwcR'HA 1-)1WkTif cc -r 1 Li I Hi 11, I I I Targeted Constituents Sediment 121 Nutrients Trash Metals Bacteria - Oil and Grease Organics Potential Alternatives SE-1 Silt Fence - SE-6 Gravel Bag Berm SE-8 Sandbag Barrier SE-9 Straw Bale Barrier I I SE-5 Fiber Rolls I . Fiber rolls at the toe of slopes greater than 5:1 (H:V) should be a minimum of 20 in. diameter or installations achieving the same protection (i.e. stacked smaller diameter fiber rolls, etc.). I . 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 Implementation I Fiber Roll Materials Fiber rolls should be either prefabricated rolls or rolled tubes of erosion control blanket. Assembly ofField Rolled Fiber Roll . Roll length of erosion control blanket into a tube of minimum 8 in. diameter . Bind roll at each end and every 4 ft along length of roll with jute-type twine. -. Installa lion I . Locate fiber rolls on level contours spaced as follows: -Slope inclination of :i (H:V) or flatter: Fiber rolls should be placed at a maximum interval of 20 ft. - Slope inclination between :i and :i (H:V): Fiber Rolls should be placed atamaximum 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 io ft. (a closer spacing is more effective). . Turn the ends of the fiber roll up slope to prevent runoff from going around the roll. . Stake fiber rolls into a 2 to 4 in. deep trench with a width equal to the diameter of the fiber roll. - 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. Removal . Fiber rolls are typically left in place. I I 2 of 4 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I Fiber Rolls SE-5 I . If fiber rolls are removed, collect and dispose of sediment accumulation, and fill and compact holes, trenches, depressions or any other ground disturbance to blend with adjacent ground. I Costs Material costs for fiber rolls range from $20 - $30 per 25 ft roll. 1 Inspection and Maintenance Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events, I weekly during the rainy season, and at two-week intervals during the non-rainy season. 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 I I maintain sheet flows, sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when sediment I accumulation reaches one-half the designated sediment storage depth, usually one-half the distance between the top of the fiber roll and the adjacent ground surface. Sediment removed during maintenance may be incorporated into earthwork on the site of disposed at s an appropriate location. If fiber rolls are used for erosion control, such as in a mini check darn, sediment removal should not be required as long as the system continues to control the grade. Sediment I control BMPs will likely be required in conjunction with this type of application. References I Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I I I I I I I January 2003 California Stormwar BMP Handbook 3 of 4 Construction www.cabmphandbooks.com SE-5 Fiber Rolls - Note: Install fiber roll -V - along a level contour. -V -V - -V u_I -V I Fiber rolls -V - -V III -V -V -VII _J Vertical spacing I measured along the II face of the slope varies between Install a fiber roll near 10' and 20' slope where it transitions into a steeper slope TYPICAL FIBER ROLL INSTALLATION N.T.S. Fiber roll 8" nun 3/4" x 3/4' wood stokes max 4' spacing ENTRENCHMENT DETAIL N. T. S. 4of 4 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com Gravel Bag Berm SE-6 I I Description and Purpose A gravel bag berm is a series of gravel-filled bags placed on a level contour to intercept sheet flows. Gravel bags pond sheet flow runoff, allowing sediment to settle out, and release runoff slowly as sheet flows, preventing erosion. Suitable Applications Gravel bag berms may be suitable: Asa linear sediment control measure: - Below the toe of slopes and erodible slopes - As sediment traps at culvert/pipe outlets - Below other small cleared areas - Along the perimeter of a site - Down slope of exposed soil areas I I - Around temporary stockpiles and spoil areas - Parallel to a roadway to keep sediment off paved areas - Along streams and channels - As linear erosion control measure: January 2003 California Stormwater BMP Handbook 1 of 4 Construction www.cabmphandbooks.com I I I ~ I I I I Objectives EC Erosion Control i] SE Sediment Control El TR Tracking Control WE Wind Erosion Control NS Non-Storniwater Management Control WM Waste Management and Materials Pollution Control Legend: El Primary Objective l Secondary Objective Ted Constituents Sediment El Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives SE-I Silt Fence- SE-5 Fiber Roll SE-8 Sandbag Barrier SE-9 Straw Bale Barrier I Li I I I SE-6 Gravel Bag Berm - Along the face and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow - At the top of slopes to divert runoff away from disturbed slopes - As check dams across mildly sloped construction roads Limitations i Gravel berms may be difficult to remove. Removal problems limit their usefulness in landscaped areas. Gravel bag berm may not be appropriate for drainage areas greater than 5 acres. Runoff will pond upstream of the filter, possibly causing flooding if sufficient space does not exist Degraded gravel bags may rupture when removed, spilling contents. Installation can belabor intensive. Berms may have limited durability for long-term projects. When used to detain concentrated flows, maintenance requirements increase. Implementation General A gravel bag berm consists of a row of open graded gravel—filled bags placed- on a level contour-; When appropriately placed, a gravel bag berm intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding provides quiescent conditions allowing sediment to settle. The open graded gravel in the bags is porous, which allows the ponded runoff to flow slowly through the bags, releasing the runoff as sheet flows. Gravel bag-berms also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets, which erode rills, and ultimately gullies, into disturbed, sloped soils. Gravel bag berms are similar to sand bag barriers, but are more porous. Design and Layout . Locate gravel bag berms on level contours. - -Slopes between 20:1 and 2:1 (H:V): Gravel bags should be placed at a maximum interval of 50 ft (a closer spacing is more effective), with the first row near the slope toe. - Slopes 2:1 (H: V) or steeper: Gravel bags should be placed atamaximum interval of 25 ft (a closer spacing is more effective), with the first row placed the slope toe. Turn the ends of the gravel bag barriers up slope to prevent runoff from going around the berm-. Allow sufficient space up slope from the gravel bag berm to allow ponding, and to provide room for sediment storage. 2 of 4 - California Stormwter BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I I I I I I I I 1 I I I i . Gravel Bag Berm . SE-6 I .0 For installation near the toe of the slope, consider moving the gravel bag barriers away from the slope toe to facilitate cleaning. To prevent flows behind the barrier, bags can be placed perpendicular to a berm to serve as cross barriers. Drainage area should not exceed 5 acres. In Non-Traffic Areas: I - Height = 18 in. maximum I - Top width = 24 in. minimum for three or more layer construction - Top width = 12 in. minimum for one or two layer construction I - Side slopes = :i or flatter In Construction Traffic Areas: I -Height = 12 in. maximum I - Top width = 24 in. minimum for three or more layer construction. - - Top width = 12 in. minimum for one or two layer construction. I - Side slopes = :i or flatter. Butt ends of bags tightly I • On multiple row, or multiple layer construction, overlapp buttjoints of adjacent row and row beneath. I . Use a pyramid approach when stacking bags. Materials I • Bag Material: Bags should be woven polypropylene, polyethylene or polyamide fabric or burlap, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 1b/in2 in conformance with the requirements in ASTM designation D3786, and ultraviolet stability I exceeding 70% in conformance with the requirements in ASTM designation D4355. Bag Size: Each gravel-filled bag should have a length of 18 in., width of 12 in., thickness of l 3 in., and mass of approximately 33 lbs. Bag dimensions are nominal, and may vary based on locally available materials. - I . Fill Material: Fill material should be 0.5 to un. Class 2 aggregate base, clean and free from clay, organic matter, and other deleterious material, or other suitable open graded, non-cohesive, porous gravel. I Costs Gravel filter: Expensive, since off-site materials, hand construction, and demolition/removal are usually required. Material costs for gravel bags are average of $2.50 per empty gravel bag. I Gravel costs range from $20-$35 per yd3. I .January 2003 California Stormwater BMP Handbook - 3 of 4 Construction www.cabmphandbooks.com I SE-6 Gravel Bag Berm Inspection and Maintenance I • 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. U . Gravel bags exposed to sunlight will need to be replaced every two to three months due to degrading of the bags. I . Reshape or replace gravel bags as needed. Repair washouts or other damage as needed. Sediment that accumulates in the BMP must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. Sediment removed during maintenance maybe incorporated I into earthwork on the site or disposed at an appropriate location. Remove gravel bag berms when no longer needed. Remove sediment accumulation and I clean, re-grade, and stabilize the area Removed sediment should be incorporated in the project or disposed of. I References Handbook of Steel Drainage and Highway Construction, American Iron and Steel Institute, 1983. I Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000. I Stormwater Pollution Plan Handbook, First Edition, State of California, Department of Transportation Division of New Technology, Materials and Research, October 1992. I I I I I I I 4 o 4 California Stormwatr BMP Handbook January 2003 I Construction www.cabmphandbooks.com Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None. . Street Sweeping and Vacuuming SE-7 Objectives EC Erosion Control SE Sediment Control [] TR Tracking Control WE Wind Erosion Control NS Non-Stomiwater Management Control WM Waste Management and Materials Pollution Control Legend: 121 Primary Objective Secondary Objective Targeted Constituents I I I H I I I I Description and Purpose I 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 I final paving. Sweeping and vacuuming prevents sediment from the project site from entering storm drains or receiving waters. Suitable Applications I 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 I vacuuming are also applicable during preparation of paved surfaces for final paving. I Limitations Sweeping and vacuuming may not be effective when sediment is wet or when tracked soil is caked (caked soil may need to be I scraped loose). I I I I 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. I January 2003 . California Stormwater BMP Handbook - 1 of 2 Construction www.cabmphandbooks.com I SE-7 Street Sweeping and Vacuuming Do not use kick brooms or sweeper attachments. These tend.to spread the dirt rather than I remove it. If not mixed with debris or trash, consider incorporating the removed sediment back into the project Costs U Rental rates for self-propelled sweepers vary depending on hopper size and duration of -rental. Expect rental rates from $58/hour (Q 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 I sediment. Match the hopper size to the area and expect sediment load to minimize time spent dumping. I 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. I • 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 I removed at least daily. More frequent removal, even continuous removal, may be required in some jurisdictions. I I Be careful not to sweep up any unknown substance or any object that maybe potentially hazardous. I I Adjust brooms frequently; maximize efficiency of sweeping operations. After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite. I References Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November-2000. I Labor Surcharge and Equipment Rental Rates, State of California Department of Transportation (Caltrans), April 1, 2002 - March 31, 2003; I I I I I- 2 of 2 California Stormwater BMP Handbook January 2003 I Construction www.cabmphandbooks.com SE-10 Objectives EC Erosion Control SE Sediment Control 121 TR Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: 121 Primary Objective El Secondary Objective Targeted Constituents Sediment 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-9 Straw Bale Barrier I Storm Drain Inlet Protection Description and Purpose Storm drain inlet protection consists of a sediment filter or an impounding area 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. Suitable Applications Every storm drain inlet receiving sediment-laden runoff should be protected. Limitations is Drainage area should not exceed 1 acre. Straw bales, while potentially effective, have not produced I in practice satisfactory results, primarily due to improper installation. I . Requires an adequate area for water to pond without encroaching into portions of the roadway subject to traffic. I . Inlet protection usually requires other methodsof temporary protection to prevent sediment-laden stormwater and non-stormwater discharges from entering the I storm drain system. . Sediment removal may be difficult in high flow conditions or if runoff is heavily sediment laden. If high flow conditions are I I I I I I 1 I I I 1 . •;:T CAT TFT P;T. ;rc 1TA 1 I January 2003 California Stormwatr BMP Handbook 1 of 9 Construction www.cabmphandbooks.com I SE-10 Storm Drain Inlet Protection I expected, use other onsite sediment trapping techniques in conjunction with inlet protection. - I • Frequent maintenance is required. - 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. I Implementation General I Large amounts of sediment may enter the storm drain system when storm drains are installed before the upsiope drainage area is stabilized, or where construction is adjacent to an existing storm drain. In cases of extreme sediment loading, the storm drain itself may clog and lose a I major portion of its capacity. To avoid these problems, it is necessary to prevent sediment from entering the system at the inlets. 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. Different types of inlet protection are appropriate for different applications depending on site conditions and the type of inlet. Inlet protection methods not presented in this handbook should be approved by the local stormwater management agency. I 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. Limit upstream drainage area tol acre maximum. For larger drainage areas, use SE-2, I Sediment Basin, or SE-3, Sediment Trap, upstream of the inlet protection device. The key to successful and safe use of storm drain inlet protection devices is to know where I runoff will pond or be diverted. - 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 I storm drain inlet protection device. - - Determine the extent of potential runoff diversion caused by the storm drain inlet I 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 I 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. I • The location and extent ofponding, and the extent of diversion, can usually be controlled through appropriate placement of the inlet protection device. In some cases, moving the I 2 of 9 California Storrnwatr BMP Handbook January 2003 Construction www.cabmphandbooks.com Li Storm Drain Inlet Protection SE-10 inlet protection device a short distance upstream of the actual inlet can provide more I efficient sediment control, limit ponding to desired areas, and prevent or control diversions. Four types of inlet protection are presented below. However, it is recognized that other I effective methods and proprietary devices exist and may be selected. - Filter Fabric Fence: Appropriate for drainage basins with less than a 590 slope, sheet 1 flows, and flows under 0.5 cfs. - Excavated Drop Inlet Sediment Trap: An excavated area around the inlet to trap I . 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, I . and where overtopping is required to prevent flooding. - Block and Gravel Filter: Appropriate for flows greater than 0.5 cfs. I . • 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 I water. Excavate sediment sumps (where needed) 1 to 2 ft with 2:1 side slopes around the inlet. I Installation - DI Protection Type i -Filter Fabric Fence - The filter fabric fence (Type i) protection I . is shown in the attached figure. Similar to constructing a silt fence; see BMP SE-1, Silt - Fence. Do not place filter fabric underneath the inlet grate since the collected sediment may fall into the drain inlet when the fabric is removed or replaced. Excavate a trench approximately 6 in. wide and 6 in. deep along the line of the silt fence - inlet protection device. Place 2 in. by 2 in. wooden stakes around the perimeter of the inlet a maximum 0f3 ft apart and drive them at least 18 in. into the ground or 12 in. below the bottom of the I trench. The stakes must 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. I 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. 1 5. Backfill the trench with gravel or compacted earth all the way around. DI Protection Type 2-Excavated Drop Inlet Sediment hap - The excavated drop I inlet sediment trap (Type 2) is shown in the attached figures. Install filter fabric fence in I January 2003 -California Stormwater BMP Handbook 3 of 9 Construction www.cabmphandbooks.com - SE-10 Storm Drain Inlet Protection I 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. I .DI Protection Type 3 - Gravel bag - The gravel bag barrier (Type 3) is shown in the figures. 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 I permeability. Use sandbag' made of geotextile fabric (not burlap) and fill with 0.75 in. rock or 0.25 in. I pea gravel. Construct on gently sloping street. Leave room upstream of barrier for water to pond and sediment to settle. Place several layers of sandbags -overlapping the bags and packing them tightly together. 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 -The block and gravel filter (Type 4) is shown in the figures. Block and gravel filters are suitable for curb inlets commonly used in residential, commercial, and industrial construction. Place hardware cloth or comparable wire mesh with 0.5 in. openings over the drop inlet so that the wire extends a minimum of i ft beyond each side of the inlet structure. If more than one strip is necessary, overlap the strips. Place filter fabric over the wire mesh. 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. 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. Pile washed stone against the wire mesh to the top of the blocks. Use 0.75 to 3 in. Costs . Average annual cost for installation and maintenance (one year useful life) is $200 per inlet. 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. 4of9 - California Stormwalr BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I I I 1 I I I I I I I I Storm Drain inlet Protection SE-10, Filter Fabric 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. Gravel Filters. If the gravel becomes clogged with sediment, it must 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 must be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height. Sediment removed during maintenance maybe incorporated into earthwork on the site ore disposed at an appropriate location. Remove storm drain inlet protection once the drainage area is stabilized. - Clean and regrade area around the inlet and clean the inside of the storm drain inlet as it must 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), November 2000. Stonnwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft, 1991. I I I I I I January 2003 California Stormwater BMP Handbook 5 of 9 Construction www.cabmphandbooks.com I I I I I I I i SE-10 Storm Drain Inlet Protection IGeotextile Blanket Silt Fence per SE-01 Drain inlet X( SECTION A-A 6" Min I —x /overlap atends x of sill fence. I Drain inlet Leoiextiie Blanket I Sheet flow Less ::han r Silt Fence per SE—Cl I V PLAN \ I DI PROTECTION TYPE NOT TO SCALE I fOTES: 1. For use in areas where grading has been completed and final soil stabilization and seeding are pending. I 2. Not applicable in paved areas. 3. Not applicable with concentrated flows. i I 6 of 9 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I Storm Drain Inlet Protection SE-1.0 I 1 Stabilize area and grade uniformly, around perimeter ,—Ceotextil e /—Blanket Silt fence Per SE-01 1:1 slope I '3.M ir _*~ Note: , I Remove sediment before reaching one—third full. I S Drain inlet Section A—A 12" Mm 24" Max I Concentrated flow Rock filter(use if flow is concentrated) ¶ —Edge of I -----------------i - sediment:trap L~A Drain inlet Sheet flow :nT ICeot:xtile X I X Blanket I L - J I Silt fence Per SE—Cl -------------- L Hon S DI PROTECTION TYPE 2 NOT TO SCALE Notes S For use in cleared and grubbed and in graded areas. Shape basin so that longest inflow area faces longest length of trap. For concentrated flows, shape basin in 2:1 ratio with length oriented towards direction of flow. I I January 2003 California Stormwater BMP Handbook 7 of 9 Construction www.cabmphandbooks.com I I I I I I gs 2—bags high TYPICAL PROTECTION FOR INLET ON SUMP SE-10 Storm Drain Inlet Protection ge of Pavement r1n1e Flow Flow Spillway, 1—bag high Sandbags 2—bags high TYPICAL PROTECTION FOR INLET ON GRADE NOTES: 1, Intended for short—term use. Use to inhibit non—storm water flow. Allow for proper maintenance and cleanup. Bags must be removed after adjacent operation is completed Not applicable in areas with high silts and clays without filter fabric. DI PROTECTION TYPE 3 NOT TO SCALE 8 of 9 California Stormwalr BMP Handbook January 2003 Construction www.cabmphandbooks.com Storm Drain Inlet Protection SE-10 Curb in let Concrete block laid-1 lengthwise on sides @ perimeter of opening Hardware cloth or wire mesh Runoff with sediment VOverflow Filtered water ;__/• c. S •. Sediment S. Hardware cloth - S •. wire mesh Curb inlet DI PROTECTION - TYPE 4 NOT TO SCALE January 2003 California Stormwater BMP Handbook 9 of 9 Construction www.cabmphandbooks.com Stabilized Construction Entrance/Exit TC-1 Objectives EC Erosion Control SE Sediment Control [] IC Tracking Control E1 WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and MateaIs Pollution Control Legend: E1 Primary Objective lI Secondary Objective I I I I I I I I 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 I Use at construction sites: Where dirt or mud can be tracked onto public roads. I • Adjacent to water bodies. I I Targeted Constituents Sediment El Nutrients Trash Metals Bacteria OH and Grease Organics Potential Alternatives None Where poor soils are encountered. I • Where dust during dry = is a problem weather conditions. Limitations I . Entrances and exits require periodic top dressing with additional stones. I • This BMP should be used in conjunction with street sweeping on adjacent public right of way. I • Entrances and exits should be constructed on level ground only. - I i 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 runoff. A I AIIF mJ.crokr m January 2003 California Stormwatr BMP Handbook 1 of 6 I Construction www.cabmphandbooks.com I Stabilized Construction Entrance/Exit TC-1 I Implementation General A stabilized construction entrance is a pad of aggregate underlain with filter cloth located at any I 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 30ftminimum 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. 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. 2 of 6 - California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I Li I Li 11 I I I I I I Li I I Stabilized Construction Entrance/Exit TC- 1 . 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 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. National Management Measures to Control Nonpoint Source Pollution from Urban Areas, USEPA Agency, 2002. Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group Working Paper, USEPA, April 1992. January 2003 California Stormwater BMP Handbook 3 of 6 Construction www.cabmphandbooks.com I I I I I I I 1 I I I I I I I I I Stabilized Construction Entrance! Exit TC- 1 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, I Washington State Department of Ecology, February 1992. Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation I and Recreation, Division of Soil and Water Conservation, 1991. Guidance Specifying Management Measures for Nonpoint Pollution in Coastal Waters, EPA I 840-B-9-002, IJSEPA, 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. I I I I I I I I I I I 4016 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com 1 d Stabilized Construction Entrance! Exit TC-1 Crushed aggregate greater than 3" but smaller than 6" -Filter fabric L Original JL 'U / prL_ 'uc [qrade 12 Mm, unless otherwise specified by a soils engineer SECTION B-B NTS NOTE: Construct sediment barrier - and channelize runoff to I sediment trapping device .>- <I I A[ 01 / kO ° mopo(~&c >1 'r'Or <I 0 00 00 Q oJ oc I / ziI (n LU Temporary pipe culvert as needed 50' Mm or four times the circumference of the largest construction vehicle tire, Match whichever is greater Existing Grade PLAN N TS January 2003 California Stormwathr BMP Handbook Construction www.cabmphandbooks.com Width as I required to I accomodate I anticipated jtraffic 5 of 6 I I Stabilized Construction Entrance/Exit TC-1 I Crushed aggregate greater than 3" but smaller than Filter fobc 12" Mm, unless otherwise specified by a sails engineer SECTION B-B NTS Crushed aggregate greater than 3" but smaller than 6". Corrugated steel panels Original grqde 12" Min, unless otherwise specified by a soils engineer Filter fabric SECTION. A-A NOT TO SCALE NOTE: Construct sediment barrier and channelize runoff to Sediment trapping sediment trapping device device arrugated steel panels as required to kc wag VW anticipated traffic, whichever is greater. — 24' min I I Match Existing Grade or rour times tne circumrerence of the largest construction vehicle tire, whichever is greater PLAN NTS I 6 of 6 California Stormwater BMP Handbook January 2003 Construction www.cabmphandbooks.com I I I I I I 1 I I I I Li I I I Wind Erosion Control WE-i I I I I I I Description and Purpose Wind erosion or dust control consists of applying water or other dust palliatives 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. - I Suitable Applications Wind erosion control BMPs are suitable during the following construction activities: I . Construction vehicle traffic on unpaved roads Objectives EC Erosion Control SE Sediment Control [) IC Tracking Control WE Wind Erosion Control NS Non-Stormwater Management Control WM Waste Management and Materials Pollution Control Legend: Primary Objective tEl Secondary Objective Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None I I Drilling and blasting activities I . • Sediment tracking onto paved roads I . Soils and debris storage piles • Batch drop from front-end loaders I . Areas with unstabilized soil Final grading/site stabilization I . Limitations • Watering prevents dust only for a short period and should be -- I applied daily (or more often) to be effective. • •• Over watering may cause erosion. - - CA UVOR li-k l)A January 2003 California Stormwatr BMP Handbook 1 of 5 I Construction www.c-abmphandbooks.com WE-1 Wind Erosion Control 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. Effectiveness depends on soil, temperature, humidity, and wind velocity. Chemically treated sub grades 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. Asphalt, as a mulch tack or chemical mulch, requires a 24-hour curing time to avoid I adherence to equipment, worker shoes, etc. Application should be limited because asphalt surfacing may eventually migrate into the drainage system. In compacted areas, watering and other liquid dust control measures may wash sediment or other constituents into the drainage system. Implementation General California's Mediterranean climate, with short wet seasons and long hot dry seasons, allows the soils to thoroughly dry out. During these dry seasons, 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. Dust control, as a BMP, is a practice that is already in place for many construction activities. Los Angeles, the North Coast, and Sacramento, among others, have enacted dust control ordinances for construction activities that cause dust to be transported beyond the construction project property line. Recently, the State Air Resources Control Board has, under the authority of the Clean Air Act, started to address air quality in relation to inhalable particulate matter less than 10 microns (PM-b). Approximately 90 percent of these small particles, are considered to be dust Existing, dust control regulations by local agencies, municipal departments, public works department, and public health departments are in place in some regions within California. Many local agencies require dust control in Order to comply with local nuisance laws, opacity laws (visibility impairment) and the requirements of the Clean Air Act. The following are measures that local agencies may have already implemented as requirements for dust control from contractors: Construction and Grading Permits: Require provisions for dust control plans. Opacity Emission Limits: Enforce compliance with California air pollution control laws. Increase Overall Enforcement Activities: Priority given to cases involving citizen complaints. Maintain Field Application Records: Require records of dust control measures from contractor; 0 Stormwater Pollution Prevention Plan: (SWPPP): Integrate dust control measures into SwPPP. 2 of 5 California Stormwater BMP Handbook - January 2003 Construction www.cabmphandbooks.com I I U I I I I I I I I I I I I I I I I Wind Erosion Control WE-1 Dust Control Practices Dust control BMPs generally stabilize exposed surfaces and minimize activities that suspend or track dust particles. The following table shows dust control practices that can be applied to site conditions that 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 would include minimizing surface areas to be disturbed, limiting onsite vehicle traffic to 15 mph, and controlling the number and activity of vehicles on a site at any given time. OUST CONTROIPRACTICES SITE CONDITION Wet Chemical Temporary Gravel Haul Minimize Permanent Mulching Suppression Oust Gravel or Silt Construction Truck Extent of Vegetation fVatering) Suppression Asphalt Fences Entrances'Equipmen Covers Disturbed Wash Oovn Area Disturbed Areas not Subject to X X X X X X Traffic Disturbed Areas X x x x x Subject to Traffic Materl Stock Pile x x x X Stabilization Demolition X X X Clearing! x x x Excavation x Truck Traffic on X x x x x Unpavt Roads Mud/Dirt Carry x Out I Additional preventive measures include: . Schedule construction activities to minimize exposed area (EC-1, Scheduling). I . Quickly stabilize exposed soils using vegetation, mulching, spray-on adhesives, calcium chloride, sprinkling, and stone/gravel layering. I i Identify and stabilize key access points prior to commencement of construction. .. Minimize the impact of dust by anticipating the direction of prevailing winds. Direct most construction traffic to stabilized roadways within the project site. 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. I January 2003 California StormwatBr BMP Handbook 3 of 5 Construction www.cabmphandbooks.com I 1 I I I LI I I I I I WE-1 Wind Erosion Control If reclaimed wastewater is used, the sources and discharge must meet California Department of Health Services water reclamation criteria and the Regional Water Quality Control Board 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." Materials applied as temporary soil stabilizers and soil binders also generally provide wind erosion control benefits. 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 wet suppression or chemical stabilization of exposed soils. Provide for rapid cleanup of sediments deposited on paved roads. Furnish stabilized construction road entrances and vehicle wash down areas. Stabilize inactive construction sites using vegetation or chemical stabilization methods. Limit the amount of areas disturbed by clearing and earth moving operations by scheduling these activities in phases. 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. Costs Installation costs for water and chemical dust suppression are low, but annual costs may be quite high since 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. 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. Check areas protected to ensure coverage. Most dust control measures require frequent, often daily, or multiple times per day attention. 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, 1992. I I 4of 5 California Stormwathr BMP Handbook - January 2003 Construction www.cabmphandbooks.com I 1 I I 1 I I I H I I I I I I H Wind Erosion Control WE-i Caltrans, Standard Specifications, Sections 10, "Dust Control"; Section 17, "Watering"; and Section 18, "Dust Palliative". Prospects for Attaining the State Ambient Air Quality Standards for Suspended Particulate Matter (PMio), 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), November 2000. January 2003 - California Stormwatr BMP Handbook - 5 of 5 Construction www.cabmphandbooks.com Attachment R Sampling Activity Log RAIN EVENT GENERAL INFORMATION Project Name Black Rail Project Number CT 03-06 Contractor Sampler's Name Signature Date of Sampling Season (Check Applicable) 1 Rainy J Non-Rainy Storm Data Storm Start Date & Time: I Storm Duration (hrs): Time elapsed since last storm (Circle Applicable Units) 1 I Mm. Hr. Days Approximate Rainfall I Amount (inches) For rainfall information: htt://cdec.water.ca.gov/weather.htm1 or htti,://www.wrh.noaa.gov/wrhp/nwsoage.html - - . SAMPLELOG Sample Identification Sample Location Sample Collection Date and Time Specific sample locations descriptions may include: 100 ft upstream from discharge at eastern boundary, runoff from northern waste storage area, downgradient of.inlet a near the intersection or A Street and 13 avenue, etc. FIELD ANALYSIS 1Yes - II No Sample Identification Test Result Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses Laboratory Hot Asphalt Asphalt Emulsion Yes - Rainbow Surface or Brown Suspension Visually Observable - No Testing Required Liquid Asphalt (tack coat) Asphalt Products Cold Mix Crumb Rubber Yes — Black, solid material Visually Observable - No Testing Required Asphalt Concrete (Any Yes - Rainbow Surface Visually Observable - No Testing Required Type) or Brown Suspension pH EPA 150.1 (pH) Acidity SM 2310B (Acidity) Acids No Anions (acetic acid, pH Meter • phosphoric acid, sulfuric Acidity Test Kit acid, nitric acid, hydrogen chloride) EPA 300.0 (Anion) Bleaches • No Residual Chlorine Chlorine SM 4500-CL G (Res. Chlorine Cleaning Products Detergents Yes - Foam Visually Observable - No Testing Required TSP No Phosphate Phosphate EPA 365.3 (Phosphate) VOC None EPA 601/602 or EPA 624 (VOC) Solvents No SVOC None EPA 625 (SVOC) California Storm Water Quality Handbooks Pollutant Testing Guidance Table Construction 2of8 January 2003 DRAFT - - - - - - - -. - - - - - - -. - - - Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table' Category Construction Site Material Visually Observable? Pollutant Indicators 2j Su9estedAnalYsj Laboratory Portland Cement (PCC) Yes - Milky Liquid Visually Observable - No Testing Required pH pH Meter EPA 150.1 (pH) Masonry products No Alkalinity or Acidity Test Alkalinity Kit SM 2320 (Alkalinity) Methyl Methacrylate EPA 625 (SVOC) Sealant (Methyl No None Cobalt Methacrylate - MMA) EPA 200.8 (Metal) Zinc Incinerator Bottom Ash Bottom Ash Aluminum Portland Concrete Steel Slag No Calcium Calcium Test EPA 200.8 (Metal) Cement Foundry Sand Vanadium EPA 200.7 (Calcium) Masonry Products Fly Ash Zinc Municipal Solid Waste Mortar Yes - Milky Liquid Visually Observable - No Testing Required Concrete Rinse Water . Yes - Milky Liquid Visually Observable - No Testing Required Acidity SM 2310B (Acidity) Alkalinity SM 2320 (Alkalinity) Non-Pigmented Curing No pH Meter Alkalinity or Acidity Test pH EPA 150.1 (pH) Compounds Kit VO EPA 601/602 or EPA 624(VOC) SVOC EPA 625 (SVOC) California Storm Water Quality Handbooks Table Pollutant Testing Guidance Ta Construction DRAFT of 8 January 2003 — — — — — — — — — — — — — — — — — — — Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant lndicator 2 Suggested Analyses [ Field 3 Laboratory Aluminum EPA 200.8 (Metal) Aluminum Sulfate No TDS Meter Sulfate TDS EPA 160.1 (TDS) Sulfate EPA 300.0 (Sulfate) Sulfur-Elemental No Sulfate . Sulfate EPA 300.0 (Sulfate) Nitrate Nitrate EPA 300.0 (Nitrate) Phosphate Phosphate EPA 365.3 (Phosphate) Fertilizers-Inorganic No _____________________ - _____________________ Organic Nitrogen None EPA 351.3 (TKN) Potassium None EPA 200.8 (Metal) Landscaping and Other TOC . EPA 415.1 (TOC) Products Nitrate EPA 300.0 (Nitrate) . . Fertilizers-Organic No - - Nitrate. Organic Nitrogen EPA 351.3 (TKN) COD EPA 410.4 (COD) . Natural Earth (Sand, Yes - Cloudiness and Visually Observable - No Testing Required Gravel, and Topsoil) turbidity. Herbicide Herbicide Check lab for specific None herbicide or pesticide Pesticide Pesticide No Alkalinity pHMeter SM 2320 (Alkalinity) Lime . Alkalinity or Acidity Test pH Kit EPA 150.1 (pH) California Storm Water Quality Handbooks Pollutant Testing Guidance Table Construction January 2003 DRAFT . 4 of 8 - Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? 2 Pollutant Indicators Suggested Analyses Field 3 Laboratory Paint Yes Visually Observable - No Testing Required Paint Strippers No VOC None EPA 601/602 or EPA 624 (VOC) ____________________ SVOC None EPA 625 (SVOC) Resins No. COD None EPA 410.4 (COD) SVOC EPA 625 (SVOC) Sealants No COD None EPA 410.4 (COD) Painting Products COD EPA 410.4 (COD) VOC EPA 601/602 or EPA 624 (VOC) Solvents No None SVOC EPA 625 (SVOC) COD EPA 41O.4(COD) Lacquers, Varnish, Enamels, and Turpentine No None VOC EPA 601/602 or EPA 624 (VOC) SVOC EPA 625 (SVOC) Thinners No VOC None EPA 601/602 or EPA 624(VOC) COD EPA 410.4 (COD) Portable Toilet Waste Portable Toilet WaProductsste Yes Visually Observable - No Testing Required California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table January 2003 DRAFT 5 of 8 — — — — — — — — • — — — — — — _ Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses Laboratory Field Aerially Deposited Lead' No Lead None EPA 200.8 (Metal) Contaminated Soil Petroleum Yes - Rainbow Surface Sheen _and _Odor Visually Observable - No Testing Required Other No Contaminant Specific Contaminant Specific Contaminant Specific FLine Flushing Produôts Chlorinated Water No Total chlorine Chlorine SM 4500-CL C (Res. Chlorine) COD None EPA 410.4 (COD) Adhesives Adhesives No Phenols Phenol EPA 420.1 (Phenol) SVOC None EPA 625 (SVOC) Chloride Chloride EPA 300.0 (Chloride) Salts (Magnesium Chloride, TDS TDS Meter EPA 160.1 (TDS) Dust Palliative Products Calcium Chloride, and No Natural Brines) Cations (Sodium, Magnesium, Calcium) None EPA 200.7 (Cations) Antifreeze and Other Vehicle Fluids Yes - Colored Liquid Visually Observable - No Testing Required Sulfuric Acid None EPA 300.0 (Sulfate) Lead None EPA 200.8 (Metal) Vehicle Batteries No pH Meter pH Alkalinity or Acidity Test EPA 150.1 (pH) Kit Fuels, Oils, Lubricants Yes - Rainbow Surface and Odor Visually Observable - No Testing Required California Storm Water Quality Handbooks Pollutant Testing Guidance Table Construction January 2003 DRAFT 6 of 8 — — — — — — — — — — — — — — — — — Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material [ Visually Observable? Pollutant Indicators 2 Suggested Analyses Field ' Laboratory Polymer/CopoIymer 6'7 No Organic Nitrogen None EPA 351.3 (TKN) BOD None EPA 405.1 (BOD) - COD None EPA 410.4 (COD) DOC None EPA 415.1 (DOC) Nitrate Nitrate EPA 300.0 (Nitrate) Sulfate Sulfate EPA 300.0 (Sulfate) Nickel None EPA 200.8 (Metal) Straw/Mulch Yes - Solids Visually Observable - No Testing Required Lignin Sulfonate No Alkalinity Alkalinity SM 2320 (Alkalinity) TDS TDS Meter EPA 160.1 (TDS) Soil Amendment/Stabilization Psyllium No COD None EPA 410.4 (COD) TOC EPA 415.1 (TOC) Products Guar/Plant Gums No COD None EPA 410.4 (COD) TOC - EPA 415.1 (TOC) Nickel EPA200.8(Metal) Gypsum No pH pH Meter Alkalinity or Acidity Test Kit EPA 150.1 (pH) Calcium Calcium EPA 200.7 (Calcium) Sulfate Sulfate EPA 300.0 (Sulfate) Aluminum None EPA 200.8 (Metal) Barium Manganese Vanadium California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table D 7 of B January 2003 RAFT I— Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses Laboratory Ammoniacal-Copper-Zinc- Arsenic Total Chromium Arsenate (ACZA) Copper-Chromium-Arsenic CCA' No Copper Total Chromium EPA 200.8 (Metal) ___________________ Treated Wood Products Ammoniacal-Copper- Arsenate (ACA) Zinc Copper Naphthenate Creosote Yes - Rainbow Surface or Brown Suspension Visually Observable - No Testing RequiredI - Notes: 1 If specific pollutant is known, analyze only for that specific pollutant. See MSDS to verify.. For each construction material, test for one of the pollutant indicators. Bolded pollutant indicates lowest analysis cost or best indicator. However, the composition of the specific construction material, if known, is the first criterion for selecting which analysis to use. -3. See www.hach.com, www.lamotte.com, www.ysi.com and www.chemetrics.com for some of the test kits If the type of inorganic fertilizer is unknown, analyze for all pollutant indicators listed. Only if special handling requirements are required in the contract documents for aerially deposited lead (ADL) If used with a dye or fiber matrix, it is considered visually observable and no testing is required. Based upon research conducted by the State of California Department of Transportation (Caltrans), the following copolymers/polymers do not discharge pollutants and water quality sampling and analysis is not required: Super Tak TM, M-BinderTM, Fish Stik TM, Pro40dcTM, Fisch-BondTM, and SoilMaster WRTM. California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table D January 2003 RAFT 8 of 8 Attachment I Discharge Reporting Log Project Name: Black Rail 16 Project Number: CT 03-06 Date Material(s) Discharged Estimated Quantity Observed By Attachment S Pollutant Testing Guidance Table — — an M — .— - — — — — — — — No — Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 - Category Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses Field Laboratory Hot Asphalt Asphalt Emulsion Yes - Rainbow Surface or Brown Suspension Visually Observable - No Testing Required Liquid Asphalt (tack coat) Asphalt Products • Cold Mix Crumb Rubber Yes —Black, solid material Visually Observable - No Testing Required Asphalt Concrete (Any Yes - Rainbow Surface Visually Observable -,No Testing Required Type) or Brown Suspension pH EPA 150.1 (pH) Acidity SM 2310B (Acidity) Acids No Anions (acetic acid, pH Meter phosphoric acid, sulfuric Acidity Test Kit acid, nitric acid, hydrogen chloride) EPA 300.0 (Anion) Bleaches _________________________ No ______________________ Residual Chlorine Chlorine Chlorine)- ______________________ ______________________ SM 4500-CL G (Res. Cleaning Products Detergents Yes - Foam Visually Observable - No Testing Required TSP No Phosphate Phosphate EPA 365.3 (Phosphate) VOC None EPA 601/602 or Solvents No EPA 624 (VOC) SVOC None EPA 625 (SVOC) California Storm Water Quality Handbooks Pollutant Testing Guidance Table Construction DRAFT 2 of 8 January 2003 Attachment S Pollutant Testing Guidance Table Attachment S Pollutant. Testing Guidance Table 1 Category . Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses Laboratory Portland Cement (PCC) Yes - Milky Liquid Visually Observable - No Testing Required pH pH Meter EPA 150.1 (pH) Masonry products No Alkalinity or Acidity Test Alkalinity Kit SM 2320 (Alkalinity) Methyl Methacrylate EPA 625 (SVOC) Sealant (Methyl No . None Cobalt Methacrylate - MMA) EPA 200.8 (Metal) Zinc Incinerator Bottom Ash Bottom Ash . Aluminum Portland Concrete Steel Slag No Calcium . Calcium Test EPA 200.8 (Metal) Cement Foundry Sand Vanadium . EPA 200.7 (Calcium) Masonry Products Fly Ash . Zinc Municipal _Solid _Waste Mortar Yes - Milky Liquid. Visually Observable - No Testing Required Concrete Rinse Water . . Yes - Milky Liquid Visually Observable - No Testing Required Acidity . SM 2310B (Acidity) Alkalinity SM 2320 (Alkalinity) Non-Pigmented Curing No pH Meter Compounds Alkalinity or Acidity Test pH EPA 150.1 (pH) Kit V C EPA 601/602or EPA 624(VOC) SVOC EPA 625 (SVOC) . California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table January 2003 DRAFT 3 of 8 — — — — — — — — - - - - - - - - - - Attachment S Pollutant Testing Guidance Table AtL:achnient S Pollutant Testing, Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant Indicators 2 j Suggested Analyses Field Laboratory Aluminum Sulfate No Aluminum TDS Meter EPA 200.8 (Metal) TDS EPA 160.1 (TDSSulfate Sulfate EPA 300.0 (Sulfate) Sulfur-Elemental No Sulfate Sulfate EPA 300.0 (Sulfate) Landscaping and Other Products Fertilizers-Inorganic 4 No Nitrate Nitrate EPA 300.0 (Nitrate) Phosphate Phosphate EPA 365.3 (Phosphate) Organic Nitrogen None EPA 351.3 (TKN) Potassium None EPA 200.8 (Metal) Fertilizers-Organic No TOC Nitrate EPA 415.1 (TOC) Nitrate EPA 300.0 (Nitrate) Organic Nitrogen EPA 351.3 (TKN) COD EPA 410.4 (COD) Natural Earth (Sand, Gravel, and Topsoil) Yes - Cloudiness and turbidity Visually Observable - No Testing Required Herbicide Herbicide No None Check lab for specific herbicide or pesticide Pesticide Pesticide Lime Alkalinity pH Meter Alkalinity or Acidity Test Kit SM 2320 (Alkalinity) - pH EPA 150.1 (pH) California Storm Water Quality Handbooks Pollutant Testing Guidance Table DRAFT Construction January 2003 4 of 8 IM . — — — — 1=111m, =111 .0011111 — — — — — —Mill. — — — Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses 'Field Laboratory Paint Yes Visually Observable - No Testing Required Paint Strippers No VOC None EPA 601/602 or EPA 624 (VOC) SVOC None EPA 625 (SVOC) Resins No COD None EPA 410.4 (COD) - SVOC EPA 625 (SVOC) Sealants No COD None EPA 410.4 (COD) Painting Products COD EPA 410.4 (COD) VOC EPA 601/602 or EPA 624 (VOC) Solvents No None SVOC EPA 625 (SVOC) COD ' EPA 410.4 (COD) Lacquers, Varnish, Enamels, and 'Turpentine No None ' VOC EPA 601/602 or EPA 624 (VOC) SVOC EPA 625(SVOC) Thinners ' No VOC ' None EPA 601/602 or EPA 624(VOC) COD EPA 410.4 (COD) Portable Toilet Waste Products Portable Toilet Waste Yes Visually Observable - No Testing Required California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table January 2003 DRAFT 5of8 - - - - - - - - - - - - - - .- - - - - - Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Materiall Visually Observable? Pollutant Indicators 2 Suggested Analyses Laboratory Field Aerially Deposited Lead No Lead None EPA 200.8 (Metal) Contaminated Soil Petroleum Yes - Rainbow Surface Sheen and Odor Visually Observable - No Testing Required Other No Contaminant Specific Contaminant Specific Contaminant Specific L Line Flushing Products Chlorinated Water No Total chlorine Chlorine SM 4500-CL G (Res. Chlorine) COD None EPA 410.4 (COD) Adhesives Adhesives . No Phenols Phenol EPA 420.1 (Phenol) SVOC None EPA 625 (SVOC) Chloride Chloride EPA 300.0 (Chloride) Salts (Magnesium Chloride, TDS TDS Meter EPA 160.1 (TDS) Dust Palliative Products Calcium Chloride, and No Natural Brines) Cations (Sodium, Magnesium, Calcium) None EPA 200.7 (Cations) Antifreeze and Other Vehicle Fluids Yes - Colored Liquid Visually Observable - No Testing Required Sulfuric Acid None EPA 300.0 (Sulfate) Lead None EPA 200.8 (Metal) Vehicle Batteries No pHMeter pH Alkalinity or Acidity Test EPA 150.1 (pH) Kit Fuels, Oils, Lubricants Yes - Rainbow Surface Sheen and Odor Visually Observable - No Testing Required California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table January 2003 DRAFT 6 of 8 - - - - - - - - - - - - - - - - - - - Attachment S Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material [ Visually ObservabIe' Poilutant Indicators 2 Suggested Analyses Field Laboratory Polymer/Copolymer 67 - No Organic Nitrogen None EPA 351:3 (TKN) BOD None EPA 405.1 (BOD) COD None EPA 410.4 (COD) DOC None EPA 415.1 (DOC) Nitrate Nitrate EPA 300.0 (Nitrate) Sulfate Sulfate EPA 300.0 (Sulfate) Nickel None EPA 200.8 (Metal) Straw/Mulch Yes - Solids Visually Observable - No Testing Required Lignin Sulfonate No Alkalinity Alkalinity SM 2320 (Alkalinity) TDS TDS Meter EPA 160.1 (TDS) Soil Amendment/Stabilization Psyllium No COD None EPA 410.4 (COD) TOC EPA 415.1 (TOC) Products . Guar/Plant Gums No COD None EPA 410.4 (COD) TOC EPA 415.1 (TOC) Nickel EPA 200.8 (Metal) Gypsum, No - pH pH Meter Alkalinity or Acidity Test Kit EPA 150.1 (pH) Calcium Calcium EPA 200.7 (Calcium) Sulfate Sulfate EPA 300.0 (Sulfate) Aluminum None EPA 200.8 (Metal) Barium Manganese Vanadium California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table January2003 DRAFT 7 of 8 Attachment S - Pollutant Testing Guidance Table Attachment S Pollutant Testing Guidance Table 1 Category Construction Site Material Visually Observable? Pollutant Indicators 2 Suggested Analyses Field Laboratory Ammoniacal-Copper-Zinc- Arsenic Arsenate (ACZA) Total Chromium Copper-Chromium-Arsenic (CCA) No Copper Total Chromium EPA 200.8 (Metal) ________________ Treated Wood Products Am moniacal-Copper- Arsenate (ACA) Zinc Copper Naphthénate Creosote Yes - Rainbow Surface or Brown Suspension Visually Observable - No Testing Required Notes: 1 If specific pollutant is known, analyze only for that specific pollutant. See MSDS to verify. For each construction material, test for one of the pollutant indicators. Bolded pollutant indicates lowest analysis cost or best indicator. However, the composition of the specific construction material, if known, is the first criterion for selecting which analysis to use. See www.hach.com, www.lamotte.com, www.ysi.com and www.chernetrics.com for some of the test kits If the type of inorganic fertilizer is unknown, analyze for all pollutant indicators listed. Only if special handling requirements are required in the contract documents for aerially deposited lead (ADL) If used with a dye or fiber matrix, it is considered visually observable and no testing is required. Based upon research conducted by the State of California Department of Transportation (Caltrans), the following copolymers/polymers do not discharge pollutants and water quality sampling and analysis is not required: Super Tak TM, MBinderTM, Fish Stik TM, Pro40dcTM, Fisch-Bond TM, and Soil Master WRTM. California Storm Water Quality Handbooks Construction Pollutant Testing Guidance Table January 2003 DRAFT 8 of 8