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HomeMy WebLinkAboutCT 05-12; Ocean Street Residences; Tentative Map (CT) (13)I I I I I I I I I II I I I I I I I I I I CITY OF CARLSBAD PRIORITY DEVELOPMENT PROJECT STORM WATER MANAGEMENT PLAN FOR OCEAN STREET RESIDENCES ENGINEER OF WORK ~ ' {A__j DAVID WI~NER-RCE #77285-EXP. 06/30/13 Submitted: 10/9/12 Revised: 11/8/12 PREPARED FOR: Zephyr Partners 11750 Sorrento Valley Road, Suite 130 San Diego, CA 92121 Contact: Jim McMenamin Phone: (858) 558-3650 PREPARED BY: RBF Consulting 5050 Avenida Encinas, Suite 260 Carlsbad, CA 92008 Contact: David Wiener (760) 603-6252 I I I I I I I I I I I I I I I I I I I I TABLE OF CONTENTS 1.0 Declaration of Responsible Charge .................................................................................... 3 2.0 Summary of Project Information ........................................................................................ 4 3.0 Pre-Project Site Conditions and Drainage Patterns Narrative ................................. 5 3.1 Site Development Constraints 4.0 Proposed Site Development and Drainage Patterns Narrative ................................ 7 4.1 Site Development Opportunities 5.0 Sources of Pollutants from the Existing Site Narrative ............................................... 9 6.0 Project Hydrologic Location ............................................................................................... 10 7.0 Identification of 303( d) Impaired Receiving Waters ................................................. 11 8.0 Identification of Pollutants Associated with Priority Project Category .............. 12 9.0 Identification of Pollutants ofConcern ........................................................................... 14 10.0 Hydromodification Management Plan (HMP) Applicability Determination ..... 15 10.1 Summary ofHMP Compliance Approach 11.0 Permanent Source Control Best Management Practices (BMPs) .......................... 20 12.0 Identification of BMPs Applicable to Individual Priority Project Categories .... 24 13.0 Implementation of Site Design Low Impact Development (LID) Practices ........ 29 14.0 Tabulation of Self-Treating Drainage Management Areas (DMAs) ...................... 31 15.0 Tabulation of Self-Retaining DMAs .................................................................................. 31 16.0 Tabulation of Surfaces Draining to Self-Retaining DMAs ......................................... 31 17.0 Tabulation of Areas Draining to Integrated Management Practices (IMPs) ..... 34 18.0 Summary ofDMA Treatment Practices ........................................................................... 41 Ocean Street Residences Priority Development Project-Storm Water Management Plan Pagei I I I I I I I I I I I I I I I I I I I 19.0 Relative Effectiveness of Project Treatment Facilities and IMPs .......................... 42 20.0 Projected Storm Water BMP Maintenance Mechanism ............................................ 43 21.0 Summary and Conclusion Narrative ................................................................................ 44 22.0 Figures Vicinity Map Soil Type Exhibit Federal Emergency Management Agency (FEMA) Map Existing Conditions Exhibit BMP Site Plan Hydromodification Exhibit 23.0 Attachments Storm Water Standards Questionnaire Geotechnical Recommendations Letter Hydromodification Calculations BMP Fact Sheets Ocean Street Residences Priority Development Project-Storm Water Management Plan Pageii I I I I I I I I I I I I I I I I I I I 1.0 Declaration of Responsible Charge I hereby declare that I am the Engineer of Work for this project and that I have exercised responsible charge over the design of the project as defined in Section 6703 of the California Business and Professions Code, and that the design is consistent with current standards. I understand and acknowledge that the check of this Priority Development Project -Storm Water Management Plan by the City of Carlsbad is confined to a review and does not relieve me, as Engineer of Work, of my responsibilities for project design. As Engineer of Work, I agree to indemnify, defend, and hold harmless the City of Carlsbad, its officers, agents, and employees from any and all liability, claims, damages, or injuries to any person or property which might arise from the negligent acts, errors, or omissions of the Engineer of Work, my employees, agents or consultants. Ocean Street Residences 1118/12 David Wiener RCE #77285 Date RBF Consulting, a company of Michael Baker Corporation Ocean Street Residences Priority Development Project-Storm Water Management Plan Page3 I I I 'I I I I I I I I I I I I I I I I 2.0 Summary of Project Information Item Profec;t ---· ; . . Project Name Ocean Street Residences Application Number(s) CT 05·12, CP 05-11, CDP 05-28, HDP 05-07, CD 12-09 Project Address 2303 Ocean Street Assessor Parcel Number(s) 203-010-12 and 203-010-15 Gross Project Area 3.05 Acres Net Project Area 2.96 Acres Proposed Project Description and Residential Condominium Units Land Use [8:1 Housing Development of 10 or more dwelling units 0 Commercial Development of one acre and greater 0 Heavy Industry of one acre and greater 0 Automotive Repair Shop 0 Restaurant Applicable Priority Development 0 Hillside Development greater than 5,000 square feet Project Categories [8:1 Water Quality Environmentally Sensitive Area (WQESA) [8:1 Parking Lot 0 Street, Highways, and Freeways 0 Retail Gasoline Outlets [8:1 Coastal Development Zone [8:1 Land Disturbance greater than one acre Project Disturbed Area 2.93 Acres 127,804SF Predevelopment Impervious Area 1.39 Acres 60,427 SF Proposed Impervious Area 1.58 Acres 68,655 SF Proposed Pervious Area 1.36 Acres 59,149 SF Project Hydrologic Unit Watershed 904.21-Carlsbad HU, Buena Vista Creek HA, El Salta HAS Project Hydrologic Soil Group DA I [8:1 B De IDD Number of Discharge Locations 2 Locations Required to Implement HMP [8:1 Yes 0No Number of HMP Compliance Points 2 Locations Ocean Street Residences Priority Development Project-Storm Water Management Plan Page4 I I I I I I I I I I I I I I I I I I I 3.0 Pre-Project Site Conditions and Drainage Patterns Narrative In the existing condition, the project site is occupied by several apartment buildings, one main drive aisles, and covered and uncovered parking spaces. The existing site is tiered into two levels. The upper, larger tier is approximately three feet below Ocean Street and is occupied by three of the five apartment buildings. The lower tier is approximately 22 feet below the upper tier and is largely occupied by the main drive aisle and two apartment buildings. The runoff from the site flows in a northwestern direction, through a series of pipes and gutters within the apartment complex campus, where it then sheet-flows to the natural area to the north. Flows then reach a poorly defined natural swale that takes the runoff to a grassy sump area to the west. The sump area contains an 18-inch culvert that outlets directly to Buena Vista Lagoon. The existing culvert discharges approximately 100 feet east of an existing weir structure, separating the lagoon from the Pacific Ocean shoreline. Runoff from the project's frontage road, Ocean Street, flows to existing curb inlets in Ocean Street, which convey flow to the undeveloped area north of the project site. There is no cross-lot drainage onto the project site. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 5 I I I I I I I I I I I I I I I I I I I 3.1 Site Development Constraints Applkabie Slit .,.,..., .... ,Coilsttabltll . ··· • .•· .. · .. D Limited Available Hydraulic Head ~ Impermeable Soils (imported soil) D High Groundwater D Contaminated Soils D Geotechnicallnstability ~ Perimeter Conditions D High Intensity Land Use D Heavy Pedestrian Traffic D Heavy Vehicular Traffic D Restricted Right-of-Way ~ Existing Easements D Inadequate Down-Stream Drainage Infrastructure D Public Safety Concerns D Other Comments: A geotechnical report was previously performed for the previous owner by Geocon Inc., dated September 4, 2004. Proposed site import soil will be Type D. See geotechnical recommendations letter written by AGS Inc., dated 10-31-12, in Attachments. The project site is adjacent to existing developments on the east and west sides. South of the project is Ocean Street. North of the site exists natural open space and Buena Vista Lagoon. The City of Carlsbad requires an 8' dedication on the southerly property line. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page6 I I I I I I I I I I I I I I I I I I I 4.0 Proposed Site Development and Drainage Patterns Narrative In the proposed condition, the existing apartment buildings and covered parking areas will be demolished and removed. In its place, 35 condominium units (within 13 buildings) will be constructed, along with two driveway entrances from Ocean Street, swimming pool, and onsite & underground parking. The drive isles will be constructed with a combination of un-grouted concrete unit pavers and grass pavers. On the southern half of the site, 14 of the condominium units (7 buildings) will be constructed above an underground parking structure. The roofs of these units will drain to raised planter areas adjacent to the buildings. The planters will be piped to a collection system that oulets onto Ocean St to the south. This runoff will be captured in existing curb & gutter, and flow into existing curb inlets on the north side of Ocean Street (See POC 2 on the Hydromoditication Exhibit). These inlets discharge to the undeveloped area north of the site, adjacent to Buena Vista Lagoon and the Pacific Ocean. The remaining 19 units (within 6 buildings on the northern half of the site) will be constructed at grade, adjacent to landscape and hardscape areas. Roofs and hardscape will drain to the adjacent landscaping, which contain five bioretention areas. Along the site's northern property line, there will be a 20-foot wide grass-paver fire Jane. Inlets contained in the landscape areas, as well as underdrain piping in the bioretention and grass-paver areas, will be conveyed to a proposed private onsite storm drain system, which will discharge at the northwest corner of the site (See POC 1 on the Hydromoditication Exhibit). Outfall at this location will either infiltrate, flow into Buena Vista Lagoon, or flow to the Pacific Ocean. Proposed surface types and drainage areas can be found on the BMP Site Plan. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page7 .; ~r..:-,:tlf,' I I I I I I I I I I I I I I I I I I I 4.1 Site Development Opportunities ,\JipllcatJ~• Slbf QevetopDillnt()pportllnltlfS ' ' , ' \ ; :' 0 Adequate Available Hydraulic Head 0 Permeable Soils 0 Groundwater Separation 0 Geotechnical Stability 0 Perimeter Conditions 0 Existing Natural Areas 0 Undevelopable Areas ~ Adequate Down Stream Drainage Infrastructure Oother Comments: Site drains to Buena Vista Lagoon. Ocean Street Residences Priority Development Project-Storm Water Management Plan PageS I I I I I I I I I I I I I I I I I I I 5.0 Sources of Pollutants from the Existing Site Narrative As noted above, the existing site is occupied by five apartment buildings, one main drive aisle, and both covered and uncovered parking spaces. Each of these site elements may be identified as an existing pollutant source. Additional, the site is tiered with areas of steep (2: 1) grading, approximately 15 feet in height, with signs of erosion. Trash, debris, building materials and pollutant deposition were not noted. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page9 I I I I I I I I I I I I I I I I I I I 6.0 Project Hydrologic Location HJ'dt'OlollcU'Dft HdroWeAM' -,. •.· ... c'. 0 Santa Margarita 902.00 0 Ysidora 902.10 0 San Luis Rey 903.00 0 Lower San Luis 903.10 0 Lorna Alta 904.10 [8J Carlsbad 904.00 [gj Buena Vista Creek 904.20 0 Agua Hedionda 4.30 Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 10 •c /~~Atn·,.,c 0 Lower Ysidora 902.11 0 Mission 903.11 0 Bonsall903.12 Not Applicable [gj El Saito 904.21 0 Vista 904.22 OLosMonos 904.31 I I I I I I I I I I I I I I I I I I I 7.0 Identification of 303( d) Impaired Receiving Waters ~~~~c~~. D Agua Hedionda Creek 90431000 (7 Miles) D Buena Vista Creek 90421000 (11 Miles) ~ Buena Vista Lagoon 90421000 (202 Acres) D Guajome Lake 90311000 (33 Acres) D Lorna Alta Creek 90410000 (7.8 Miles) D Lorna Alta Slough 90410000 (8.2 Acres) D Oceanside Harbor 90421000 (52 Acres) D Pacific Ocean Shoreline, Lorna Alta HSA, at Lorna Alta Creek Mouth 90410000 D Pacific Ocean Shoreline, San Luis Rey HU, at San Luis Rey River Mouth 90311000 ( 0.03 Miles) D San Luis Rey River & Lower Stream (West of Interstate 15) 90311000 (19 Miles) D Santa Margarita Lagoon 90211000 (28 Acres) D Santa Margarita River (Lower) 90211000 (19 Miles) Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 11 Enterococcus Fecal Coliform Manganese Phosphorus Selenium Sulfates Total Dissolved Solids Total Nitrogen as N Sediment Toxicity Selenium Indicator Bacteria Nutrients Eutrophic Selenium Eutrophic Indicator Bacteria Copper Indicator Bacteria Enterococcus Total Coliform Chloride Enterococcus Fecal Coliform Phosphorus Total Dissolved Solids Total Nitrogen as N Toxicity Eutrophic Enterococcus Fecal Coliform Phosphorus Total as N I I I I I I I I I I I I I I I I I I I 8.0 Identification of Pollutants Associated with Priority Project Category Priority ~Cab!Jory .· .;' ~Polluiiai~e• . -' '--.-· Sediment Nutrients Detached Residential Trash & Debris D Development Oxygen Demanding Substances Oil & Grease Bacteria & Viruses Pesticides Sediment Nutrients Attached Residential Trash & Debris ~ Development Oxygen Demanding Substances (if landscape exists on-site) Oil & Grease (if uncovered parking areas exist on-site) Bacteria & Viruses Pesticides Sediment (iflandscape exists on-site) Nutrients (if landscape exists on-site) Heavy Metals Organic Compounds (if uncovered parking areas exist on-site) Trash & Debris D Commercial Development Oxygen Demanding Substances (includes solvents) Oil & Grease Bacteria & Viruses (if land use includes food or animal waste products) Pesticides (includes solvents) Sediment Heavy Metals D Heavy Industry or Organic Compounds Industrial Development Trash & Debris Oxygen Demanding Substances Oil & Grease Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 12 I I I I I I I I I I I I I I I I I I I 8.0 Identification of Pollutants Associated with Priority Project Category (continued) Prlo~~O.felorles ·. ·.· ;,·-~~UU-tC!a'*fles · .. . .. . Heavy Metals Organic Compounds (includes petroleum hydrocarbons and 0 Automotive Repair Shop solvents) Trash & Debris Oil & Grease Trash & Debris Oxygen Demanding Substances 0 Restaurants Oil & Grease Bacteria & Viruses Pesticides (if landscape exists on-site) Sediments Nutrients 0 Hillside Development Trash & Debris Oxygen Demanding Substances Oil & Grease Pesticides Sediments (iflandscape exists on-site) Nutrients (if landscape exists on-site) Heavy Metals 0 Parking Lots Trash & Debris Oxygen Demanding Substances (iflandscape exists on-site) Oil & Grease Pesticides (if landscape exists on-site) Heavy Metals Organic Compounds 0 Retail Gasoline Outlets Trash & Debris Oxygen Demanding Substances Oil & Grease Sediments Nutrients (iflandscape exists on-site) Heavy Metals Organic Compounds (including petroleum hydrocarbons) [8:1 Streets, Highways & Freeways Trash & Debris Oxygen Demanding Substances (includes solvents) Oil & Grease Bacteria & Viruses Pesticides (if landscape exists on-site) Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 13 I I I 'I I I I I I I I I I I I I I I I 9.0 Identification of Pollutants of Concern Sediment/Siltation Copper Sediment Toxicity [8J Sediment Nutrients Selenium Phosphorus Sulfates Sediment Total as N 0Chloride ~Nutrients 0Eutrophic 1:8:1 Nutrients 0 Phosphorus Ocopper 1:8:1 Heavy Metals 0Manganese 0 Sediment Toxicity [8J Organic Compounds 0 Toxicity [8J Trash & Debris [8J Oxygen Demanding 0 Eutrophic 0 Nutrients Substances 0 Phosphorus as N [8J Oil & Grease 0Toxicity Enterococcus [8J Indicator Bacteria ~ Bacteria & Viruses Eutrophic 0 Total Coliform Fecal Coliform Copper 0 Sediment Toxicity [8J Pesticides Eutrophic D Sulfates Phosphate 0 Toxicity Total as N Ocean Street Residences Priority Development Project· Storm Water Management Plan Page 14 1:8:1 Sediment 1:8:1 Nutrients 0 Heavy Metals 0 Trash & Debris 0 Oxygen Demanding Substances 0 Oil & Grease [8J Bacteria & Viruses D Pesticides I I I I I I I I I I I I I I I I I I I 10_0 Hydromodification Management Plan (HMP) Applicability Determination Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 15 I I I I I I I I I I I I I I I I I I I 10.0 Hydromodification Management Plan (HMP) Applicability Determination Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 15 14. Hydromodification Controls Required Go to Figure 6-2 of Oeci8ion Malrix :,:.!:.:-,:•It,· I I I I I I I I I I I I I I I I I I I 10.0 HMP Applicability Determination (continued) HMP.\ IIQ~Dtti~-~-~ ' ,' pp ',,,,',' '' ,', ',' ,!Jal,,, '' '', Node Component Response Response 1 Priority Development Project [gl Yes-Go to Node 2 DNa-Exempt 2 Proper Energy Dissipation DYes-Go to Node 3 Intentionally left blank Go to Node 3 3 Increase Impervious Area [gl Yes-Go to Node 4 DNo-GotoNode5 4 Increase Unmitigated Peak [gl Yes-Go to Node 5 DNa-Exempt Flows to Any Outlet Location 5 Direct Discharge to an DYes-Exempt [gl No-Go to Node 6 Exempt System 6 Direct Discharge to a Tidally DYes-Potentially [gl No-Go to Node 7 Influenced Lagoon Area Exempt Direct Discharge to Stabilized 7 Conveyance to Exempt DYes-Go to Node 8 [gl No-Go to Node 9 System Does Stabilized Conveyance 8 Have Capacity to Convey DYes-Exempt DNo-GotoNode9 Ultimate 010 9 Discharge to Highly D Yes -Exempt [gl No-Go to Node 10 Urbanized Area Urban Infill Project [gl No -HMP Controls Required 10 Discharging to Stabilized DYes-Go to Node 11 Conveyance Go to Node 14 11 Determine Domain of DYes-Go to Node 12 Intentionally Left Blank Analysis Does Not Apply to Node 11 Stabilized Conveyance Extends Beyond Domain of [gl No -HMP Controls Required 12 Analysis and Eventually DYes-Go to Node 13 Discharges to LOW Go to Node 14 Susceptibility Stream Cumulative Future Impacts [gl No-HMP Controls Required 13 Represent <3% Impervious DYes-Exempt Area Increase Go to Node 14 14 Go to HMP Figure 6-2 Mitigation Criteria and Implementation Comments: For the Ocean Street Residences project, HMP Controls are required. Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 16 I I I I I I I I I I I I I I I I I I 10.1 Summary of HMP Compliance Approach Summary of Project HMP Compliance Approach Software Selection 0 Not Applicable-Project Exempt from HMP requirements 0 Determine/Identify Point(s) of Compliance 0 Utilize SCCWRP Screening Tools to determine Stream Susceptibility 0 Default to a High Susceptibility Stream (0.1Q2) 0 Utilize an appropriate HMP Sizing Tool to demonstrate HMP compliance 0 Utilize HMP Sizing Tables to demonstrate HMP compliance [8J Utilize an approved Continuous Simulation Model and compare pre-project and mitigated post-project flows to demonstrate HMP compliance D HEC-HMS 0HSPF [8J SDHM 0 SWMM 0 Provide comprehensive, digital support data, calculation method and parameters, and calculation results on Compact Disk (CD) sufficient to duplicate study and support a RWQCB audit To provide a design that fully m1t1gates potential Hydromodification impacts, long-term continuous simulation hydrologic calculations were performed using the San Diego Hydrology Model (SDHM) and the Hydrologic Simulation Program Fortran (HSPF). HSPF has been the state-of-the-art program for long-term continuous simulation calculations since its initial development over 30 years ago. SDHM was used to faci litate the development of input fi les for HSPF. HSPF uses hourly rainfaJI data to develop long-term hydrology for the flow duration analysis. None of the City of Carl sbad approved precipitation gauges are in the immediate vicinity of the project site. The closest gauge geographically and in terms of average annual precipitation is the Oceanside precipitation gage, which is located approximately 5 miles north of the project site. Ocean Street Residences Priority Development Project - Storm Water Management Plan Page 17 I I I I I I I I I I I I I I I I I I I Modeling Inputs Long-term continuous simulation hydrologic modeling requires that the drainage area within the project site be delineated in a manner consistent with the project-specific drainage study (under separate cover). Within the drainage basin, unique combinations of hydrologic soil type and land use are also delineated. The existing hydrologic soil type classifications are considered to be Type B based on NRCS Soils Map in Section 22. The proposed hydrologic soil type is considered to be TypeD based on the Geotechnical Recommendations Letter (by AGS Inc, on 10-31-12) found in Attachments. The project proposes to two drainage Points of Connection (POCs). POC I is located at the proposed private onsite storm drain outfall , located at the northwest corner of the site. POC 2 is located at existing curb & gutter on the north side of Ocean Street. The POC locations, as well as the areas draining to them, can be found on the Hydromodification Exhibit. Existing ground cover was established based upon topographic survey and recent site visits. Existing Conditions Exhibit shows the pre-project land characteristics for each POC. Proposed ground cover was established based on the proposed site plan. The Hydromodification Exhibit presents the post-project land characteristics at each POC. Results Hydromodification impacts from development are mitigated in different ways for each POC. POC 1 contains five bioretention areas (IMP's 1-5), landscape areas, pervious pavement, and flow- through planter boxes (IMP's 6-9). POC 2 contains flow-through planter boxes (IMP's 10-18). The locations and areas of these mitigation measures and IMP's can be seen on the Hydromodification Exhibit. Complete results of the HSPF analysis are included in Hyd romodification Calculations attachment. Typical details for bioretention areas and flow-through pl anter boxes, as modeled in SDHM, are shown on the BMP Site Plan. The table below presents a summary of the partial duration peak runoff rates for the pre- development and post-development conditions. All of the peak flow rates have been mitigated to equal or less than the pre-development peak runoff rates. Sum mal)' of Partial-Duration Peak Flow Rates 2-Year 5-Year Pre-Mitigated Pre-Mitigated POC Post-Post-Project Project Project (cfs) (cfs) (cfs) 0.61 0.19 0.94 + 2 0.26 0.07 0.40 Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 18 10-Year Pre-Mitigated Post-Project Project (cfs) (cfs) 1.15 0.39 0.46 0.16 25-Year Pre-Mitigated Post-Project Project (cfs) (cfs) 1.37 0.64 ~ + 0.51 0.22 I I I I I I I I I I I I I I I I I I I Conclusions The results presented above show that mitigation of both peak flow and flow duration are accomplished for POC 1 and POC 2 over the statistical range of events between I 0% of Q2 and Q 10 (hydromodification zone). The project, therefore, complies with the standards of the effective City of Carlsbad Standard Urban Stormwater Management Plan (SUSMP), dated January 2011. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 19 I I I I I I I I I I I I I I I I I I I 11.0 Permanent Source Control Best Management Practices (BMPs) Soutte eontrot814P c Ap~--·~-Re4Wre---< . ·" . . ... · [8J Provide prohibitive dumping placards and Lor signage [8J Post sign age at public access points to deter prohibitive [8J Storm Drain Inlet Labeling dumping [8J Maintain legibility of placards and signage 0 Not Applicable Comment: D Materials placed in an enclosure (e.g. cabinet, shed, or similar structure that prevents contact with rain, runoff or spillage to the storm water conveyance system) D Protected by secondary containment structures (e.g. berms, dikes, or curbs) and paved or sufficiently D Outdoor Material Storage Areas impervious to contain leaks and spills D The storage area is paved and sufficiently impervious to contain leaks and spills D Includes a roof ru: awning to minimize direct precipitation to the secondary containment area 1253 Not Applicable Comment: No proposed outdoor material storage areas. Ocean Street Residences Priority Development r>roject-Storm Water Management Plan Page 20 I I I I I I I I I I I I I I I I I I I 11.0 Permanent Source Control BMPs (continued) Source Control BMP ·;AJtpllQ·I~ .. Ittll .......... 1:8] Paved with an impervious surface ~ Designed not to allow run-on from adjoining areas 1:8] Screened or walled to prevent off-site transport of trash 1:8] Common Trash Enclosure and 1:8] Use trash containers with attached lids to exclude rain Recyclable Material Storage and maintain lids in closed position while not in use Areas and/or include a roof or awning to minimize direct precipitation. 1:8] Acknowledgment that installation of storm drain inlets or area drains in designated trash storal!e areas is orohibited D Not Applicable Comment: 1:8] Plant pest-resistant or well-adapted plant varieties such as drought tolerant and/or native olants 1:8] Discourage pests by modifying the site and landscaping design 1:8] Employ Integrated Pest 1:8] Distribute lPM educational materials to future occupants as part of the final engineering phase Operation and Management (lPM) Practices Maintenance Plan (O&M Plan) which addresses physical pest elimination techniques such as relying on natural enemies to consume pests, weeding, pruning, and etc. Emphasis placed on correct and limited use of pesticides as a last line of defense D Not Applicable Comment: Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 21 I I I I I I I I I I I I I I I I I I I 11.0 Permanent Source Control BMPs (continued) Source control BMP Ap llt4bhtl1itpJe~ ....... rlleDu· p ' ' ' ' ',,,,, '' . ' [8] Employ rain shutoff devices to prevent irrigation during and after precipitation [8] Design irrigation systems for the specific water requirements of each landscape area [8] Use flow reducers or shutoff valves triggered by a [8] Use of Efficient Irrigation pressure drop to control water loss in the event of broken Systems & Drought Tolerant sprinkler heads or lines Landscape [gl Provide water conservation educational materials to Design future occupants as part of final engineering phase Operation and Maintenance Plan [O&M Plan)· [8] Acknowledgment that Landscape & Irrigation plan is required to be consistent with City of Carlsbad Water Efficient Landscaping Ordinance 0 Not Applicable Comment: [8] Equipped with a clarifier QI other pretreatment facility approved bv the City Engineer [8] Properly connected to a sanitary sewer QL [gl Interior Floor Drains and 0 An alternate method, as approved by the City Engineer Elevator Shaft Sump Pumps [8] Acknowledgment that direct connection of interior floor drains and elevator shaft pumps to private or public storm drain or sanitary sewer is not permissible 0 Not Applicable Comment: Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 22 I I I I I I I I I I I I I I I I I I I 11-0 Permanent Source Control BMPs (continued) Solll'(e Con..-olB., . AppltbdJl•~~DiattOnReqldrem..ts .. 1:8:1 Prohibit vehicle washing [8J Prohibit pressuring washing of parking surface in the oarkine: e:arae:e and [8J Provide adequate treatment control BMPs to treat runoff orior to discharge to an MS4 ililll [8J Provide prohibitive dumping signage and Hoar drain marking; prominently displayed inside the parking garage and at the Hoar drains, respectively and: [8J Interior Parking Garages 1:8:1 Implement dry clean-up methods for non-hazardous Equipped with Floor Drains accidental spills 1:8:1 Equipped with a clarifier l1r other pretreatment facility 0 Properly connected to a sanitary sewer .QL 0 An alternate method, as approved by the City Engineer 0 Acknowledgment that direct connection of interior floor drains and elevator shaft pumps to the sanitary sewer or storm water conveyance is not permissible 0 Not Applicable Comment: 1:8:1 A pet waste station that includes eye level, post mounted signage which reads "pick-up after your pet" or similar 1:8:1 Pet Use Areas aooroved lane:uae:e and 1:8:1 A pet waste disposal receptacle equipped with a lid 0 Not Applicable Comment: . Ocean Street Residences Priority Development Project-Storm Water Management Plan Page23 I I I I I I I I I I I I I I I I I I I 12.0 Identification ofBMPs Applicable to Individual Priority Project Categories :~.ftl!Jl'lly~rok¢ . ·. MIP~~...-~~~•Practlce .·· D Rural Swale System DUrban Curb/Swale System D Private Roads D Dual Drainage System D An alternate method, as approved by the City Engineer [8:1 Not Applicable Comment: Project does not propose any private roads. D Designed to drain into adjacent landscape prior to discharging to a storm water conveyance D Shared access [8:1 Residential Driveways & Guest D Flared or piano shaped entrance (single lane at street) Parking D Wheelstrips (paving only under tires) [8:1 Porous paving/Permeable surface D Not Applicable Comment: Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 24 • • • :..Z:.r..:.,:tolt," I I I I I I I I I I I I I I I I I I I 12.0 Identification of BMPs Applicable to Individual Priority Project Categories (continued) . ., . ""'\ . ., ' ~;~r..ptell!l";"'"s . '"'·"· '·· .• · ... -... n~:._ ~ .. .· ·:· . . . ,' .. ·. .. . • ~· . . . v'C:;;·. ·: ,_, .. : ; . . D Covered loading dock areas QL D Designed to preclude urban run-on and runoff D Containment method to isolate dock and facilitate pollutant removal, such as a shut-offvalve and containment area D Dock Areas (Truck Wells) D Equipped with a clarifier or other pretreatment facility D An alternate method, as approved by the City Engineer D Acknowledgement that direct connections to storm drains from-I loading docks are ro · ·reo ~Not Applicable Comment: Project does not propose any dock areas. D Located indoors and. D Designed to preclude urban run-on and runoff from ~·-:areas D Self contained bay drainage system (i.e. dead-end sump, with no outlet to offsite facilities) designed to capture all D Maintenance and Repair Bays wash water, leaks, and spills. The self contained drainage system shall connect to a "dead end sump" for collection a-nd D Acknowledgement that connection of maintenance and repair bay drains to the sanitary sewer or storm water 1 is · ~Not Applicable Comment: Project does not propose any maintenance and/ or repair bays. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 25 I I I I I I I I I I I I I I I I I I I 12.0 Identification of BMPs Applicable to Individual Priority Project Categories (continued) ll\~Qill.J'~Olit1 PfQJeet ~~i--~~,. ca "'·· .. · .. · .. ' . D Paved with an impervious surface D Self-contained to preclude urban run-on and runoff D Preferably located indoors !!L D Covered with a roof or overhang D Vehicle and Equipment Wash D Equipped with a clarifier or other pretreatment facility Areas D Properly connected to a sanitary sewer QL D An alternate method, as approved by the City Engineer D Acknowledgement that connection of vehicle and equipment wash areas to the storm water conveyance system is prohibited ~Not Applicable Comment: Project does not propose any vehicle and/ or equipment wash areas. D Cover or enclose areas of that are a source of pollutants, D Grade or berm the perimeter of the processing area to prevent run-on or runoff D Sloped to a self contained drainage system (i.e. "dead-end sump", with no outlet to offsite facilities) designed to capture all wash water, leaks, and spills. The self contained drainage system shall connect to a "dead end sump" for collection and proper disposal D Outdoor Processing Areas D Equipped with a clarifier or other pretreatment facility D Properly connected to a sanitary sewer .QL D An alternate method, as approved by the City Engineer D Acknowledgement that installation of storm drain inlets in outdoor processing areas and connection to a storm water conveyance system is prohibited 1:8] Not Applicable Comment: Project does not propose any outdoor processing areas. . Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 26 I I I I I I I I I I I I I I I I I I I 12.0 Identification of BMPs Applicable to Individual Priority Project Categories (continued) :-~·.,~~ .. , ~~·· UtltiJi~Ji$t ...... ll'fi!OtPral:tke .·•·. . ·. ' p ·'> ..... ' . ' 0 Paved with an impervious PCC surface 0 Graded at a minimum slope to prevent pond formation 0 Separated by grade break, curb, or berm to prevent run- on 0 Covered with a canopy that extends a minimum of ten feet in each horizontal direction, for each pump, l!I alternatively; 0 Covered the fuel area with minimum dimensions equal 0 Fueling Areas to or greater than the area within the grade break or fueling area (defined as extending 6.5 feet from the corner of each fuel dispenser or the length at which each hose and nozzle assembly may be operated plus one foot, whichever is greater 0 The canopy shall not drain to the fueling area 0 Acknowledgement that connection of fueling areas to the sanitary sewer or storm water conveyance system is prohibited IZ/ Not Applicable Comment: Project does not propose any fueling roads. -0 Where landscaping is proposed in surface parking areas (both covered and uncovered), incorporate landscape areas into the drainage design I:8J Retail and Surface Parking 0 Overflow parking (i.e. parking in excess of the minimum Areas parking requirements for the project) may be constructed of permeable paving [8J Not Applicable Comment: . Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 2.7 I I I I I I I I I I I I I I I I I I I 12.0 Identification of BMPs Applicable to Individual Priority Project Categories (continued) 0 Steep Hillside Landscaping A~»~iitw~~ > ,,, > '· > •• • ' > ' • '1: ' . . .. ------'---1 0 Steep hillside areas disturbed by project development shall be landscaped with deep rooted, drought-tolerant plant species selected for erosion control and stabilized with mulch, consistent the City Water Efficient Landscaping Ordinance 10-0R0412-1 and the statewide Water Conservation in Landsca e A=ct=-------------1 IZJ Not Applicable Comment: Project does not propose any steep hillside landscaping. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 28 I I I I I I I I I I I I I I I I I I I 13.0 Implementation of Site Design Low Impact Development (LID) Practices LID Pr1iclklt .· &Pflfca~te~·~~a. ····< • ··' • ,-·: ''· D Preserve natural drainage features D Preserve existing trees and vegetation D Minimize soil disturbance D Clustering or concentrating development on the least D Conserve Natural Areas environmentally sensitive areas; consistent with SUSMP §4.1 (e.g. developing on ... previously graded areas, areas containing of non-native vegetation and etc.) D Incorporation of open space Lot( s) D An alternate method, as approved by the City Engineer D Not Applicable Comment: Existing development & landscaping will be removed & replaced. ~ Minimize the impervious footprint by increasing building density and/ or by incorporating multiple- storied architecture ~ Construct streets, sidewalks, and parking lot drive aisles to minimum widths, provided public safety is not compromised ~ Minimize Impervious Surfaces ~ Incorporate landscape buffers between sidewalks, streets, and other flatwork ~ Minimize impervious surfaces in landscape design; such as decorative or stamped concrete ~Using permeable surfaces (porous concrete, pavers, asphalt) in overflow parking or low-traffic areas D An alternate method, as approved by the City Engineer D Not Applicable Comment: Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 29 I I I I I I I I I I I I I I I I I I I 13.0 Implementation of Site Design Low Impact Development (LID) Practices (continued) LIDPI'actlce ~~.,....~~-.. 0 Minimize disturbance to natural drainages 0 Convey runoff safely from the tops of slopes U_Yegetate slopes with native or drought tolerant landscape 0 Protect Slopes and Channels 0 Stabilize permanent channel crossings 0 Install Energy Dissipaters 0 An alternate method, as approved by the City Engineer ~Not Applicable Comment: No existing slopes and/or channels within project site. Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 30 I I I I I I I I I I I I I I I I I I I 14.0 Tabulation of Self-Treating Drainage Management Areas (DMAs) Tabulation of Self Treating DMAs Self-Treating DMA Surface Type Area (ftZ) A Landscape Area, Pervious Unit Pavers, Grass 19,126 Pavers, & Concrete Hardscape 8 Landscape Area, Pervious Unit Pavers, & 4,950 Concrete Hardscape K Landscape Area 298 L Landscape Area 336 w Landscape Area, Flow-Through Planters, 9,705 Pervious Unit Pavers, & Concrete Hardscape The locations, limits, and surface types of all Se lf-Retaining DMAs are delineated on the BMP Site Plan. 15.0 Tabulation of Self-Retaining DMAs Tabulation of Self-Retaining DMAs Self-Retaining DMA Surface Type NONE - 16.0 Tabulation of Surfaces Draining to Self-Retaining DMAs Tabulation of Surfaces Draining to Self-Retaining DMAs Runoff Factor Surface Type Area (ftZ) (Table 4-2) NONE -- Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 31 DMAName-B Area X Runoff Factor - Area (ftZ) - I I I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to Integrated Management Practices (IMPs) Tabulation of Areas Draining to a Bloretentlon IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 6,455 1.0 Conventional Concrete 2,625 1.0 Landscape 2,098 0.1 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Quality Treatment Only) Total DMA Area Tabulation of Areas Draining to a Bloretentlon IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 2,126 1.0 Conventional Concrete 5,574 1.0 Landscape 2,927 0.1 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Quality Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 32 DMAName-C Area X Runoff Factor 6,455 2,625 210 9,290 0.04 372 ft2 645 ft2 11,823 ft2 DMAName -D Area X Runoff Factor 2,126 5,574 293 7,700 0.04 308 ft2 338 ft2 10,965 ft2 I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Bioretention IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 8,500 1.0 Conventional Concrete 2,917 1.0 Landscape 3,723 0.1 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Quality Treatment Only) Total DMA Area Tabulation of Areas Draining to a Bloretentlon IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 6,514 1.0 Conventional Concrete 2,150 1.0 Landscape 4,975 0.1 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Quality Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 33 DMAName-E Area X Runoff Factor 8,500 2,917 372 11,417 0.04 457ft2 1,626 ft2 16,766 ft2 DMAName-F Area X Runoff Factor 6,514 2,150 498 8,664 0.04 347 ft2 430 ft2 14,069 ft2 :, ~!;:-,:•It,' I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Bioretention IMP DMAName-G Runoff Factor Area Surface Type Area (ft2) X (Table 4-2) Runoff Factor Conventional Concrete 4,723 1.0 4,723 Landscape 1,535 0.1 154 Subtotal 4,877 IMP Sizing Factor (SUSMP Table 4-6) 0.04 Minimum IMP Area 195 ft2 Proposed IMP Area (Water Treatment Only) 642 ft2 Total DMA Area 6,900 ft2 Tabulation of Areas Draining to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Conventional Concrete 2,050 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 34 DMAName-H Area X Runoff Factor 2,050 2,050 0.04 82 ft2 1,028 ft2 3,078 ft2 .. ~--. ..,-.,,. ,......._., ... I I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Conventional Concrete 3,370 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Tabulation of Areas Draining to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 1,755 1.0 Conventional Concrete 246 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 35 DMAName-1 Area X Runoff Factor 3,370 3,370 0.04 135 ft2 1,203 ft2 4,573 ft2 DMAName-J Area X Runoff Factor 1,755 246 2,001 0.04 80 ft2 110 ft2 2,111 ft2 I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Flow-Tbrougb Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 1,330 1.0 Conventional Concrete 982 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Tabulation of Areas Draining to a Flow· Tbrougb Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 3,511 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 36 DMAName-M Area X Runoff Factor 1,330 982 2,312 0.04 92 ft2 470 ft2 2,782 ft2 DMAName-N Area X Runoff Factor 3,511 3,511 0.04 140 ft2 1,040 ft2 4,551 ft2 ... :.lj.:-,: ... ,, I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Flow· Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 1,114 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Tabulation of Areas Draining to a Flow· Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 1,224 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 37 DMAName-0 Area X Runoff Factor 1,114 1,114 0.04 45 ft2 230 ft2 1,344 ft2 DMAName-P Area X Runoff Factor 1,224 1,224 0.04 49 ft2 340 ft2 1,564 ft2 I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 3,307 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Tabulation of Areas Draining to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ft2) (Table 4-2) Roof 1,024 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 38 DMAName-Q Area X Runoff Factor 3,307 3,307 0.04 132 ft2 1,240 ft2 4,547 ft2 DMAName-R Area X Runoff Factor 1,024 1,024 0.04 41 ft2 204 ft2 1,228 ft2 I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Dralnln1 to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ftZ) (Table 4-2) Roof 1,193 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Tabulation of Areas DralniJII to a Flow-Through Planter IMP Runoff Factor Surface Type Area (ft:Z) (Table 4-2) Roof 3,435 1.0 Subtotal IMP Sizing Factor (SUSMP Table 4-6) Minimum IMP Area Proposed IMP Area (Water Treatment Only) Total DMA Area Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 39 DMAName-S Area X Runoff Factor 1,193 1,193 0.04 48 ft2 126 ft2 1,319 ft2 DMAName-T Area X Runoff Factor 3,435 3,435 0.04 137 ft2 1,125 ft2 4,560 ft2 I I I I I I I I I I I I I I I I I I I 17.0 Tabulation of Areas Draining to IMPs (Continued) Tabulation of Areas Draining to a Flow-Through Planter IMP DMAName-U Runoff Factor Area Surface Type Area (ft2) (Table 4-2) X Runoff Factor Roof 1,009 1.0 1,009 Subtotal 1,009 IMP Sizing Factor (SUSMP Table 4-6) 0.04 Minimum IMP Area 40 ft2 Proposed IMP Area (Water Treatment Only) 200 ft2 Total DMA Area 1,209 ft2 Tabulation of Areas Draining to a Flow-Through Planter IMP DMAName -V Runoff Factor Area Surface Type Area (ft2) (Table 4-2) X Runoff Factor Roof 1,055 1.0 1,055 Subtotal 1,055 IMP Sizing Factor (SUSMP Table 4-6) 0.04 Minimum IMP Area 42 ft2 Proposed IMP Area (Water Treatment Only) 200 ft2 Total DMA Area 1,255 ft2 The locations and limits of all Areas Draining to Imps are delineated on the BMP Site Plan. Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 40 :, Z:.l:.:-.:••r; I I I I I I I I I I I I I I I I I I I 18.0 Summary of DMA Treatment Practices Summary ofDMA Treabnent Practices DMA Classification Quantity Subtotal DMA (ftz) Subtotal DMA (acres) Self-Treating DMAs 5 34,415 0.79 Surfaces Draining to Self-Treating 0 --DMAs Bioretention IMPs 5 60,523 1.39 Flow Through Planter IMPs 13 34,121 0.78 Total Project DMA 129,059 2.96 Comment: Project DMA area does not include pool, jacuzzi, or fountain areas. Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 41 I I I I I I I I I I I I I I I I I I I 19.0 Relative Effectiveness of Project Treatment Facilities Relative Effectiveness of Project Treatment Fadlltles and IMPs Pollutants Grouped by Method of Transport Treatment Facility /IMP Coarse Pollutants Associated with Sediment and Trash ~ Bioretention IMP High ~ Flow Through Planter IMP High D Infiltration IMP High D Conventional Vegetated Swale High D Extended (Dry) Detention High Basins D Media (Sand) Filter High OWetPond High D Constructed Wetland High D Proprietary Vault/Tree Well High ~ Proprietary Inl et Filter (as part of treatment train in Self-High Treating areas A and 8, See BMP Site Plan for location) Ocean Street Residences Priority Development Project-Storm Water Management Plan Page 42 Fine Particles During Transport Hi gh High High Medium High High High High Medium Low Pollutants that tend to be Dissolved Following Treatment Medium Medium High Low Low Low Medium Medium Low Low 1", :.:;:..,:•ltf I I I I I I I I I I I I I I I I I I 20.0 Projected Storm Water BMP Maintenance Mechanism Maintenance Mechanism ~ Conditional Use Permit -For discretionary projects only, the City may assure maintenance of storm water BMPs through the inclusion of maintenance conditions in the conditional use permit. A non-refundable security may be required. D Project Proponent Agreement to Maintain Storm Water BMPs -The City may enter into a contract with the project proponent obliging the project proponent to maintain, repair and replace the storm water BMP as necessa_ry into perpetuity. A non-refundable security may be required. D Lease Provision -In those cases where the City holds title to the land in question and the land is being leased to another party for private or public use, the City may assure storm water BMP maintenance, repair and replacement through conditions in th e lease. D Assessment District -The City may approve an Assessment District or other funding mechanism created by the project proponent to provide funds for storm water BMP maintenance, repair and replacement on an ongoing basis. Any agreement with such a District shall be subject to the Public Entity Maintenance Provisions below. D Public Entity Maintenance-The City may approve a public or acceptable quasi-public entity (e.g., the County Flood Control District, or annex to an existing assessment district, an existing utility district, a state or federal resource agency, or a conservation conservancy) to assume responsibility for maintenance, repair and replacement of the BMP. Public entity maintenance agreements shall ensure estimated costs and front-funded or reliably guaranteed, (e.g., through a trust fund, assessment district, fees, bond, letter of credit or similar means). In addition, the City may seek protection from liability by appropriate releases and indemnities. The City Engineer shall have the authority to approve storm water BMPs proposed for transfer to any other public entity within its jurisdiction before installation. The City shall be involved in the negotiation of maintenance requirements with any other public entities accepting maintenance responsibilities within their respective jurisdictions; and in negotiations with the resource agencies responsible for issuing permits for the construction and/or maintenance of the facilities. The City must be identified as a third party beneficiary empowered to enforce any such maintenance agreement within their respective jurisdictions. D Alternative Mechanism -The City may accept an alternative maintenance mechanism if such mechanism is as protective as those listed above. An alternative mechanism must be approved by the City Attorney and the City Engineer. Comment: Ocean Street Residences Priority Development Project -Storm Water Management Plan Page 43 I I I I I I I I I I I I 11 I I I I I I 21.0 Summary and Conclusion Narrative Water Quality requirements outlined in the City of Carlsbad SUSMP (January 2011) will be met by implementing BMPs including landscape areas, bioretention, pervious paving, inlet filter inserts, and flow-through planter boxes. Locations, quantities, and supporting calculations can be found on the attached BMP Site Plan. Hydromodification requirements outlined in the City of Carlsbad SUSMP (January 2011) will be met to ensure that "post-development runoff rates and durations do not exceed pre-project conditions." Hydromodification controls that will be implemented include landscape areas, bioretention and pervious paving. Locations, quantities, and supporting calculations can be found on the attached Hydromodification Exhibit and Hydromodification Calculations. Ocean Street Residences Priority Development Project· Storm Water Management Plan Page 44 I I I I I I I I I I I I I I I I I I I 22.0 Figures • Vicinity Map • Soil Type Exhibit • Federal Emergency Management Agency (FEMA) Map • Existing Conditions Exhibit • BMP Site Plan • Hydromodification Exhibit Ocean Street Residences Priority Development Project -Storm Water Management Plan I I I , I I I I I I VICINITY MAP 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 I I I I VICINITY MAP OCEAN STREET RESIDENCES Cypress Ave Buena V1sta Maxton Brown Park • Lagoon Chamberta.n Propeny Jt! ManaQeme,. Buena VISta Way n ~ f La<JI>n& Dr Jl "' > .. I :? ~ )> < .. l& Flores Dr Lagunallr ' E1C1ended Stay Ameoc:a \ Churc:l l ~ Buen• V1511 Elemental) School Buena L San OiejjO C..rlsbad -C\ Village By The Sea ~ ~ ""' "lo ..,._ ~ I I I I I I I I SOIL TYPE I EXHIBIT I I I I I I I I I I -- 33" 9'54" 33"9'49" - - - --- -- - -Hydrologic Soil Group-San Diego County Area, California Map Scale: 1:917 if printed on A size (8.5" x 11") sheel N A !'111---:===~------:::::::=====::J.Meters 0 10 20 40 60 !'Ill---~~===~~--------~=========~ Feet 0 50 100 200 300 USDA Natural Resources --= Conservation Service Web Soil Survey National Cooperative Soil Survey -- ---- 8/20/2012 Page 1 of 4 33" 9' 54" 33" 9'49" - - -- - - - --- - -- - - - -- - Hydrologic Soil Group-San Diego County Area, California MAP LEGEND Area of Interest (AOI) D Area of Interest (AOI) Soils Soil Map Units Soli Ratings D A D NO D B D B/0 D c D C/0 D 0 Nol rated or not available Political Features e Cities Water Features Streams and Canals Transportation +++ Rails -Interstate Highways US Routes Major Roads ........, Local Roads USDA Natural Resources Conservation Service MAP INFORMATION Map Scale: 1:917 if printed on A size (8.5" " 11") sheet. The soil surveys lhat comprise your AOI were mapped at 1 :24 ,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov Web Soil Survey National Cooperative Soil Survey Coordinate System: UTM Zone 11 N NAD83 This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Survey Area Data: San Diego County Area, California Version 6, Dec 17, 2007 Date(s) aerial images were photographed: 617/2005 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 8/20/2012 Page 2 of4 - I I I I I I I I I I I I I I I I I I I Hydrologic Soil Group-San Diego County Area, California Hydrologic Soil Group Hydrologic Soli Group-Summary by Map Unit-San Diego County Area, California (CA838) Map unit oymbol Map unit name Rating AcrealnAOI Percent of AOI LG-W Lagoon water 0.5 - MIC Marina loamy coarse sand, 2 8 1.9 to 9 percent slopes Totals for Area of Interest 2.4 Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C. and D) and three dual classes (AID, 8/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (AID, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Natural Resources Conservation Service Web Soil Survey National Cooperative Sofl Survey 21.5% 78.5% 100.0% 8/20/2012 Page 3 of 4 I I I I I I I I FEMAMAP I I I I I I I I I I I --- ----- - - - - - - - - - - - MAP SCALE 1" = 500' ==c=~o====~2~~======~~=====7i~=====1~,ooo = FEET ~~m~ PANEL 0761G ~ FIRM ~ FLOOD INSURANCE RATE MAP ® SAN DLEGO COUNTY, © @g CALIFORNIA @, AND INCORPORATED AREAS [!£!:[] <?:?,) PANEL 761 OF 2375 ~ (SEE MAP INDEX FOR FIRM PANEL LAYOUT) ~ CONT ... INS ~ ~ mru. ~ d CAh'l.StiAU Cll V Of """'''" 0761 u @2) OCEANSIDE CITY OF Q6029.I 0761 G ~ = @ © © d Noboe to UHr The M.p Numbef ~ betow tnould be '*ld !1!b .....nen Clf~ map orders tne CcmFNW1ity Number ahown aOOYe Should be UHCS on • .,., ... nee •ppkM!ona for the ~ ........ .,. d MAP NUMBER ~ B 06073C0761G ~ ~-~ ... 't: MAP REVISED © 't ~ = "'l-tNo st.<-0\).,. MAY 16,2012 ~ Ft'dtral Emergency Management Agency \. ~ I I I I I I I I EXISTING I CONDITIONS I I EXHIBIT I I I I I I I II I I II I I BMP I I I SITE I I PLAN I I I I I I I I I I I I 'I I I I I !I I II I I I I I I I I I HYDROMODIFICATION EXHIBIT I I I I I I I I I I I I I I I I I I I 23.0 Attachments • Storm Water Standards Questionnaire • Geotechnical Recommendations Letter • Hydromodification Calculations • BMP Fact Sheets Ocean Street Residences Priority Development Project-Storm Water Management Plan I I I I I I I STORM WATER I STANDARDS I QUESTIONNAIRE 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 I I I I «~~ ~ CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services Land Development Engineering 1635 Faraday Avenue 760-602-2750 www.carlsbadca.gov To address post-development pollutants that may be generated from development projects, the City requires that new development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management Practices (BMP's) into the project design per the City's Standard Urban Stormwater Management Plan (SUSMP). To view the SUSMP, refer to the Engineering Standards (Volume 4, Chapter 2) at www.carlsbadca.gov/standards. Initially this questionnaire must be completed by the applicant in advance of submitting for a development application (subdivision, discretionary permits and/or construction permits). The results of the questionnaire determine the level of storm water standards that must be applied to a proposed development or redevelopment project. Depending on the outcome, your project will either be subject to 'Standard Stormwater Requirements' or be subject to additional criteria called 'Priority Development Project Requirements'. Many aspects of project site design are dependent upon the storm water standards applied to a project. Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City staff has responsibility for making the final assessment after submission of the development application. If staff determines that the questionnaire was incorrectly filled out and is subject to more stringent storm water standards than initially assessed by you, this will result in the return of the development application as incomplete. In this case, please make the changes to the questionnaire and resubmit to the City. If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the questions, please seek assistance from Land Development Engineering staff. A separate completed and signed questionnaire must be submitted for each new development application submission. Only one completed and signed questionnaire is required when multiple development applications for the same project are submitted concurrently. In addition to this questionnaire, you must also complete, sign and submit a Project Threat Assessment Form with construction permits for the project. Please start by completing Section 1 and follow the instructions. When completed, sign the form at the end and submit this with your application to the city. Examples: single family homes, multi·family homes, i Commercial-greater than 1-acre. Any development other than heavy industry or residential. Examples: hospitals; laboratories and other medical facilities; educational institutions; recreational facilities; municipal facilities; commercial I buildings; car wash facilities; mini-malls and other business I malls; I automotive I · i I i processing plants, Restaurants. Any that drinks for consumption, including stationary counters and refreshment stands selling prepared foods and drinks for immediate consumption (SIC code 5812), where the land area for development is greater than 5,000 square feet. Restaurants where land development is less than 5,000 square feet shall meet all SUSMP requirements except for structural treatment BMP and numeric sizing criteria X E-34 Page 1 of 3 REV 1/14/11 X X X X I I I I I I I I I I I I I I I I «~ STORM WATER STANDARDS QUESTIONNAIRE Develo12.ment Services ~ CITY OF Land Development Engineering 1635 Faraday Avenue 760-602-2750 CARLSBAD E-34 www.carlsbadca.gov e feet of impervious surface and is 6. Hillside development. Any development that creates more than 5,000 squar located in an area with known erosive soil conditions, where the development w ill grade on any natural slope that is twen -five ercent 25% or realer. directly adjacenf to or discharging 7. Environmentally Sensitive Area fESAJ 1. All development located within or directly3 to an ESA (where discharges from the development or redevelopment w ESA), which either creates 2,500 square feet or more of impervious surface on the area of im erviousness of a ro osed ro"ect site 10% or more of its natural! ill enter receiving waters within the a proposed project site or increases r occurrina condition. 8. Parking lot. Area of 5,000 square feet or more, or with 15 or more parking spac es, and potentially exposed to urban runoff 9. Streets. roads. highways. and freewavs. Any paved surface that is 5,000 s transportation of automobiles, trucks, motorcycles, and other vehicles quare feet or greater used for the 10. Retail Gasoline Outlets. Serving more than 100 vehicles per day and greater th an 5,000 square feet Ocean and ( 1) creates more than 11. Coastal Development Zone. Any project located within 200 feet of the Pacific 2500 square feet of impervious surface or (2) increases impervious surface on pr operty by more than 10%. 12. More than 1-acre of disturbance. Project results in the disturbance of 1-acre Pollutant-generating Development Project4. or more of land and is considered a X X X X X X X 1 Environmentally Sensitive Areas include but are not limited to all Clean Water Act Section 303 Biological Significance by the State Water Resources Control Board (Water Quality Control Plan designated with the RARE beneficial use by the State Water Resources Control Board (Water Qual areas designated as preserves or their equivalent under the Multi Species Conservation Program w (d) impaired water bodies; areas designated as Areas of Special for the San Diego Basin (1994) and amendments); water bodies ity Control Plan for the San Diego Basin (1994) and amendments); ilhin the Cities and County of San Diego; and any other equivalent environmentally sensitive areas which have been identified by the Copermittees. 2 "Directly adjacent" means situated within 200 feet of the Environmentally Sensitive Area. 3 "Discharging directly to' means outflow from a drainage conveyance system that is composed entire ly of flows from the subject development or redevelopment site, and not commingled with flow from adjacent lands. eater than background levels. In general, these include all projects 4 Pollutant-generating Development Projects are those projects that generate pollutants at levels gr that contribute to an exceedance to an impaired water body or which create new impervious surface areas that require routine use of fertilizers and pesticides. In most cases linear pathway projects that access, or for pedestrian or bicycle use, are not considered Pollutant-generating Development Proj s greater than 5000 square feet and/or introduce new landscaping are for infrequent vehicle use, such as emergency or maintenance ects if they are built with pervious surfaces or if they sheet flow to surrounding pervious surfaces. INSTRUCTIONS: Section 1 Results: If you answered YES to ANY of the questions above, your project is subject to Priority please proceed to Section 3. Check the "meets PRIORITY DEVELOPMENT PROJEC requirements will apply per the SUSMP. If you answered NO to All of the questions above, then please proceed to Section 2 and E-34 Page 2 of 3 Development Project requirements. Skip Section 2 and T requirements" box in Section 3. Additional storm water follow the instructions. REV 1/14/11 I I I I I I I I I I I I I I I I I I I «~ ~CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services Land Development Engineering 1635 Faraday Avenue 760-602-2750 www.carlsbadca.gov INSTRUCTIONS: Complete the questions below regarding your project 1. Project results in the disturbance of 1-acre or more of land and is considered a Pollutant-generating Development Project*? INSTRUCTIONS: If you answered NO, please proceed to question 2. YES If you answered YES, then you ARE a significant redevelopment and you ARE subject to PRIORITY DEVELOPMENT PROJECT requirements. Please check the "meets PRIORITY DEVELOPMENT PROJECT requirements" box in Section 3 below. 2. Is the project redeveloping an existing priority project type? (Priority projects are defined in Section 1) I INSTRUCTIONS: If you answered YES, please proceed to question 3. If you answered NO, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER REQUIREMENTS. Please check the "does not meet PDP reQuirements" box in Section 3 below. 3. Is the work limited to trenching and resurfacing associated with utility work; resurfacing and reconfiguring surface parking lots and existing roadways; new sidewalk; bike lane on existing road and/or routine maintenance of damaged pavement such as pothole repair? Resurfacing/reconfiguring parking lots is where the work does not expose underlying soil during construction. INSTRUCTIONS: If you answered NO, then proceed to question 4. If you answered YES, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER REQUIREMENTS. Please check the udoes not meet PDP requirements" box in Section 3 below. 4. Will your redevelopment project create, replace, or add at least 5,000 square feet of impervious surfaces on existing developed property or will your project be located within 200 feet of the Pacific Ocean and (1) create 2500 square feet or more of impervious surface or (2) increases impervious surface on the property by more than 10%? Replacement of existing impervious surfaces includes any activity that is not part of routine maintenance where impervious material(s) are removed, exposing underlying soil during construction. NO INSTRUCTIONS: If you answered YES, you ARE a significant redevelopment, and you ARE subject to PRIORITY DEVELOPMENT PROJECT requirements. Please check the "meets PRIORITY DEVELOPMENT PROJECT requirements" box in Section 3 below. Review SUSMP to find out if SUSMP requirements apply to your project envelope or the entire project site. If you answered NO, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER REQUIREMENTS. Please check the "does not meet PDP requirements" box in Section 3 below. *for definition see Footnote 4 on page 2 My project meets PRIORITY DEVELOPMENT PROJECT (POP) requirements and must comply with additional stormwater criteria per the SUSMP and I understand I must prepare a Storm Water Management Plan for submittal at time of application. I understand flow control (hydromodification) requirements may apply to my project. Refer to SUSMP for details. D My project does not meet POP requirements and must only comply with STANDARD STORMWATER REQUIREMENTS per the SUSMP. As part of these requirements, I will incorporate low impact development strateoies throuohout my project. Applicant Information and Signature Box ThiS Box for Ctry USfJ Only Address: Assessor's Parcel Number(s): City Concurrence: I YES NO 2303 Ocean Street 203-010-12 I Applicant Name: Applicant Title: By: David Wiener, RBF Consulting Civil Engineer Date· AppliJQgnature: Date: :o~ 9/5/12 ProjectiD: E-34 Page 3 of 3 REV 1/14/11 I I I I I I GEOTECHNICAL I II RECOMMENDATIONS I LETTER 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 I I I I ~AGS Zephyr Partners 11750 Sorrento Valley Road, Suite 130 San Diego. CA 92121 Attention: Mr. Jim McMenamin ADVANCED GEOTECHNICAL SOLUTIONS, INC. 25109 Jefferson Avenue, Suite 220 Murrieta. California 92562 lelephone: (619) 708-1649 Fa\: (714) "l09-.l287 October 30, 2012 PfW 1205-06 Report 1205-06-B-2 Subject: Response to Cycle Review Comments, Ocean Street Residences (CD 12-09), City of Carlsbad, California References: see Appendix II Gentlemen: In accordance with your request, Advanced Geotechnical Solutions, Inc.'s (AGS) has prepared this response to the second review of the application for CD 12-09-Ocean Street Residences Cycle Review comments from the City of Carlsbad. This response specifically addresses the City comments regarding the proposed DMA, SWMP, and BMP for Ocean Street Residences, City of Carlsbad, California. AGS has been retained as the Geotechnical Consultant of Record on the project and will be conducting supplemental subsurface investigation. Once completed AGS will prepare a 40-scale grading plan review for the project utilizing plans prepared by RBF. In preparing the following responses AGS has reviewed the Tentative Tract Map prepared by RBF and the information presented in the Geotechnical Investigation prepared by Geocon. Specifically, AGS has prepared responses to items I, 5 and I 6. For ease in review the cycle review comments are presented first followed by our responses. Item /-City of Carlsbad-Provide an update feller from soils engineer that provides design recommendations for the proposed BMPsi!MPs including bioretention basins, flow-through planters and pervious pavers, particu/arlv those adjacent to the proposed building structure.<: AGS response-Given the relatively high density of the development and the numerous retaining structures and subterranean parking garage, it is our opinion that bio-retention basins, flow-through planters and pervious pavers, particularly those adjacent to the proposed building structures, should have no ability to allow percolation of water into the onsite soils. Accordingly the bio-retention structures should be lined with impervious materials (Visqueen or other suitable materials) to minimize water transmission into the underlying fills. For the Grass Paver area (northwest side of the project) this area would be suitable bio-infiltration. For design of the bio-filtration see the rates presented in the response to Item 5. Item 5-City of Carlsbad-Soil engineer shall provide percolation rates and design criteria for all self- retaining areas. Provide details to show that the self-retaining areas will drain proper~v and within 72 hours after a storm event. ORANGE AND L.A. COUNTIES (714) 786-5661 INLAND EMPIRE (619) 708-1649 SAN DIEGO AND IMPERIAL COUNTIES (6 I 9) 850-3980 I I I I I I I I I I I I I I I I I I I Page 2 Report 1205-06-8-2 October 30, 2012 PIW 1205-06 AGS response -Conside ring the mass grading proposed and the fact that the entire site will be re- graded, it is anticipated that all o f the ncar surface soils " ill consist of compacted fi ll eit her loc<t ll) derived from the undocumented <trtific ial fill , terrace deposits, alluvium or from imported soils. 1\GS recommends that an infiltration rate ofO to 0.05 inches/hour (Soi l Group D) be uti li 7cd for the de~ign of self-retaining area~ located in compacted artificial fill soils. Item I 6-Ci~)l f~{ Car/.\·hnd-Some hioretenlions are adjacent to the hui/ding .\·tructures. The soils e11gineer may require impermeable lining It is 1101 clear ji·om the SDIIM genera/(!{/ report (( il!filtration \1'l/S assumed in the anafvsis. ((lined. no il!filtrotionmust be w;.\umed in S DJ IM wwh,sis. AGS response -/\GS doc!. recommend an impermea ble liner lor bio-retent ions adjacent to structures. From a geotechni ca l perspective the onl) suitabl e area for minor amount~ of bin- infi ltrat ion will be in the Grass Paver area on the northwest side of the project. lnliltration rates presented in our response to Item 5 can be utilized for the design of any hio-inlilt ration in thi~ area. Advanced Geotechnical Solutions, Inc. appreciates th e opportunity to provide you with geotechnical consul ting services and professional opinions. If you have any questi ons, please contact the un dersigned at (619) 708-1649. Respectfully Subm itted. Adva nced Geotechni ca l Solutions, Inc. ) JE -R~Y 1\.CIIANEY, Vice President RCE 46544 I RG E 23 14. Reg. Exp. 6-30-13 Dr>lrihullnn ( 5) Addressee (I I RllF Ann l>a\ rd W~:rncr Anaduncrll~ Appendix A· Rclcrcncc~ ADVANCED GEOTECHNICAL SOLUTIONS, INC. I I I I I I I I I I I I I I I I I I I PageJ Rep011 1205-06-ll-2 APPENDIX A REFERENCES October 30, 2012 P/W 1205-06 CJeocon Inc .. Cieotechnicu/lnve.\'ligalion, (kean Street Condominiums, Ocean ,\'tree/ and Mountain View Drive. Car/shad. ( 'al(fornia. dated September J. 201J4 (pmjectno. 07 351-22-01) RBF Consulting, A Baker Company, Ocean Street Residences, Tentative Tract Map, dated October II, 20/2, Sheets I through 8 City of Carlsbad, Memorandum CDI2-09-0cean Street Residences 2'"1 Review, dated October 25, 2012 ADVANCED GEOTECHNICAL SOLUTIONS, INC. I I I I I I I HYDROMODIFICATION I CALCULATIONS I I I I I I I I I I I ------------------- -PRE-DEVELOPED POC 1 -MITIGATED 1.15 ..----~-------------------- "' (/J ~ 0.88 J----------=~------------------ 0 ~ 0 J lL 0.61 J-----tl--,---_____,q&r------------------ ftA ~~ 0. 06 ..__ ___ _.__ ___ _...._ ___ ___._ __ ...-.ull!tr----1----......._ ___ __, 10E-4 10E-3 10E-2 10E-1 1 10 100 P-erc-en-t Tim-e Exc-e-eding ------------------- • PRE-DEVELOPED POC2 -MITIGATED 0.46 ..------A-::---------------------- ,.... (/J ~ 0.35 ~-+---~~-------------------0 ~ 0 J lL 0.24 ._ __ --wir---1--------..:l---------------------, 0.03 L__ ___ .....__ ___ ....L...--___ ___...__~~--L-------L--------1 10E-4 10E-3 10E-2 10E-1 1 10 100 P .e rc.e n 1: T i rn eo E :x:ceo eo ding I I I I I I I I I I I I I I I I I I I Project Name: Site Name Site Address: City Report Date Gage Data Start Data End Precip Scale: Version SDHM2011 PROJECT REPORT Ocean St Carlsbad 11/7/2012 OCEAN SID 10/01/1959 09/30/2004 1. 00 2012/03/20 Low Flow Threshold for POC 1 10 Percent of the 2 Year High Flow Threshold for POC 1 10 year Low Flow Threshold for POC 2 10 Percent of the 2 Year High Flow Threshold for POC 2 10 year PREDEVELOPED LAND USE Name POC 1 Bypass: No GroundWater: No Pervious Land Use B,Grass,FLAT(0-5%) B,Grass,MOD(5-10%) B,Grass,STEEP(10-20 Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface Acres .016 .855 .43 1.301 Acres 0.944 0.944 2.245 Interflow Groundwater I I I I I I I I I I I I I I I I I I I Name POC 2 ByPass: No GI."oundWater: No Pervious Land Use B,Grass,FLAT(0-5%) B,Grass,MOD(5-10%) B,Grass,STEEP(l0-20 Pervious Total Impervious Total Basin Total Element Flows To: Surface MITIGATED LAND USE Name DMA A ByPass: Yes GJ:'oundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use lMPERVIOUS-FLAT Porous Pavement Impervious Total Basin Total Element Flows To: Surface Acres .089 .003 .183 0.275 Acres 0.443 0.443 0. 718 Interflow Acres .093 0.093 Acres 0.022 0.325 0.347 0.44 Interflow Groundwater Groundwater I I I I I I I I I I I I I I I I I I I Name DMA B Bypass: Yes GroundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use IMPERVIOUS-FLAT Porous Pavement Impervious Total Basin Total Element Flows To: Surface Name DMA C Bypass: No GroundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-1 Surface-! Name IMP-1 Acres .0476 0.0476 Acres 0.0053 0.0607 0.066 0.1136 Interflow Acres .048 0.048 Acres 0.208 0.208 0.256 Interflow IMP-1 Surface-! Bottom Length: 40.00 ft. Bottom Width : 16.00 ft. Groundwater Groundwater I I I I I I I I I I I I I I I I I I I rrench bottom slope 1: 0.01 To 1 rrench Left side slope 0: 3 To 1 Trench right side slope 2: 3 To 1 Material thickness of first layer : 1.5 Pour Space of material for first layer : 0.39 Material thickness of second layer : 0.25 Pour Space of material for second layer : 0.35 Material thickness of third layer : 1 Pour Space of material for third layer : 0.4 Discharge Structure ~iser Height: 0.5 ft. ~iser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Stage(ft) 16.000 16.042 16.083 16.125 16. 167 16.208 16.250 16.292 16.333 16.375 16.417 16.458 16.500 16.542 16.583 16. 62 5 16. 667 16.708 16.750 16.792 16.833 16.875 16.917 16.958 17.000 17.042 17.083 17.125 17. 167 17.208 17.250 17.292 17.333 17.375 17.417 Landscape Swale Area(ac) Volume(ac-ft) 0.014 0.000 0.014 0.000 0.015 0.015 0.015 0.015 0.016 0.016 0.016 0. 016 0.017 0.017 0.017 0.017 0.017 0.018 0.018 0.018 0.018 0. 019 0. 019 0. 019 0. 019 0.020 0.020 0.020 0.020 0.020 0.021 0.021 0.021 0. 021 0.022 0.022 0.022 0.000 0.000 0.001 0.001 0.001 0.001 0.002 0.002 0.002 0.002 0.003 0.003 0.003 0.004 0.004 0.004 0.004 0.005 0.005 0.005 0.006 0.006 0.006 0.007 0.007 0.007 0.008 0.008 0.008 0.009 0.009 0.009 0.010 Hydraulic Table Discharqe(cfs) Infilt(cfs) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.082 0.234 0.430 0.662 D. 926 1. 217 1.534 1.874 2.236 2.619 3. 021 3.443 3.882 4.339 4.812 5.301 5.805 6.325 6.860 7.408 7.971 8.547 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I I 17.458 17.500 17.542 17.583 17.625 17.667 17.708 17.750 17.792 17.833 17.875 17.917 17.958 18.000 18.042 18.083 18.125 18.167 18.208 18.250 18.292 18.333 18.375 18.417 18.458 18.500 18.542 18.583 18.625 18.667 18.708 18.750 18.792 18.833 18.875 18.917 18.958 19.000 19.042 19.083 19.125 19.167 19.208 19.250 19. 2 92 19.333 19.375 19.417 19.458 19.500 19.542 19.583 19.625 19.667 19.708 19.750 19.792 0.022 0.023 0.023 0.023 0.023 0.023 0.024 0.024 0.024 0.024 0.025 0.025 0.025 0.025 0.026 0.026 0. 02 6 0.026 0.026 0.027 0. 027 0.027 0.027 0.028 0.028 0.028 0.028 0.028 0.029 0.029 0.029 0.029 0.030 0.030 0.030 0.030 0.031 0.031 0.031 0.031 0.031 0.032 0.032 0.032 0.032 0.033 0.033 0.033 0.033 0.034 0.034 0.034 0.034 0.034 0.035 0.035 0.035 0.010 0.011 0.011 0. 011 0.012 0.012 0.012 0.013 0.013 0.013 0.014 0.014 0.015 0.015 0.016 0.016 0. 016 0.017 0.017 0.018 0.018 0.019 0.019 0.020 0.020 0. 021 0.021 0.022 0.022 0.023 0.023 0.023 0.025 0.026 0.027 0. 02 9 0.030 0.031 0.032 0.034 0.035 0.036 0.038 0.039 0.040 0.042 0.043 0.045 0.046 0.047 0.049 0.050 0.052 0.053 0.055 0.056 0.058 9.136 9.739 10.35 10.98 11.62 12.27 12.93 13.61 14.29 14.99 15.70 16.42 17.15 17.89 18.64 19.40 20.17 20.95 21.74 22.54 23.35 24.17 25.00 25.84 26.69 27.54 28.41 29.28 30.16 31.06 31.96 32. 86 33.78 34.71 35.64 36.58 37.53 38.49 39.46 40.43 41.42 42.41 43.40 44.41 45.42 46.44 47.47 48.51 49.55 50. 60 51.66 52.72 53.80 54.88 55.96 57.06 58.16 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I I Name Bottom Bottom IMP-1 Surface-1 ~ength: 0.00 ft. Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Sp~ce of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-1 Name DMA D Bypass: No GroundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Perviou~::e Total Impervious Land Use IMPERVlOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-2 Surface-2 Name IMP-2 OUtlet 2 Acres .067 0.067 Acres 0.177 0.177 0.244 Interflow IMP-2 Surface-2 Bottom ~ength: 18.00 ft. Bottom Width : 18.00 ft. Trench bottom slope 1: 0.01 To 1 Trench ~ft side slope 0: 3 To 1 Trench right side slope 2: 3 To 1 Material thickness of first layer : 1.5 Pour Space of material for first layer : 0.39 Material thickness of second layer : 0.25 Groundwater Pour Space of material for second layer : 0.35 I I Material thickness of third layer : 1 I Pour Space of material for third layer 0.4 Dischar2e Structure Riser Height: 0.5 ft. Riser Diameter: 12 in. I Element Flows To: Outlet 1 Outlet 2 I I Landscape Swale Hydraulic Table Stage (ft~ Area{ae~ Volume (ac-ft~ Discharg:e~cfs~ Infilt(cfs~ 16.000 0.007 0.000 0.000 0.000 16.042 0.007 0.000 0.000 0.000 I 16.083 0.007 0.000 0.000 0.000 16.125 0.007 0.000 0.000 0.000 16.167 0.007 0.000 0.000 0.000 I 16.208 0.008 0.000 0.000 0.000 16.250 0.008 0.000 0.000 0.000 16.292 0.008 0.000 0.000 0.000 16.333 0.008 0.001 0.000 0.000 I 16.375 0.008 0.001 0.000 0.000 16.417 0.008 0.001 0.000 0.000 16.458 0.008 0.001 0.000 0.000 16.500 0.008 0.001 0.000 0.000 I 16.542 0.008 0.001 0.082 0.000 16.583 0.008 0.001 0.234 0.000 16. 62 5 0.009 0.002 0.430 0.000 16.667 0. 00 9 0. 002 0.662 0.000 I 16.708 0.009 0.002 0. 926 0.000 16.750 0.009 0.002 1. 217 0.000 16.792 0.009 0.002 1. 534 0.000 I 16.833 0.009 0.002 1.874 0.000 16.875 0.009 0.002 2.236 0.000 16.917 0.009 0.003 2.619 0.000 16.958 0.009 0.003 3.021 0.000 I 17. 000 0.009 0.003 3.443 0.000 17.042 0.010 0.003 3.882 0.000 17.083 0.010 0.003 4.339 0.000 17.125 0.010 0.003 4.812 0.000 I I 17.167 0.010 0.004 5.301 0.000 17.208 0.010 0.004 5.805 0.000 17.250 0.010 0.004 6.325 0.000 17.292 0.010 0.004 6.860 0.000 I 17.333 0.010 0.004 7.408 0.000 17.375 0.010 0.004 7. 971 0.000 17.417 0. 011 0.005 8.547 0.000 I 17.458 0. 011 0.005 9.136 0.000 17.500 0. 011 0.005 9.739 0.000 17.542 0.011 0.005 10.35 0.000 17.583 0.011 0.005 10.98 0.000 I 17.625 0. 011 0.005 11. 62 0.000 17.667 0. 011 0.006 12.27 0.000 17.708 0.011 0.006 12.93 0.000 I I I I 17.750 0.011 0.006 13.61 0.000 I 17.792 0. 011 0.006 14.29 0.000 17.833 0.012 0.006 14.99 0.000 17.875 0.012 0.007 15.70 0.000 17.917 0.012 0.007 16.42 0.000 I 17.958 0.012 0.007 17.15 0.000 18.000 0.012 0.007 17.89 0.000 18.042 0.012 0.007 18.64 0.000 18.083 0.012 0.008 19.40 0.000 I 18.125 0.012 0.008 20.17 0.000 18 .167 0.012 0.008 20.95 0.000 18.208 0.012 0.008 21. 7 4 0.000 18.250 0.013 0.008 22.54 0.000 I 18.292 0.013 0.009 23.35 0.000 18.333 0.013 0.009 24.17 0.000 18.375 0.013 0.009 25.00 0.000 I 18.417 0.013 0.009 25.84 0.000 18.458 0.013 0.010 26.69 0.000 18.500 0.013 0.010 27.54 0.000 18.542 0.013 0.010 28.41 0.000 I 18.583 0.013 0.010 29.28 0.000 18.625 0.014 0. 011 30.16 0.000 18.667 0.014 0. 011 31.06 0.000 18.708 0.014 0. 011 31.96 0.000 I 18.750 0.014 0. 011 32.86 0.000 18.792 0.014 0.012 33.78 0.000 18.833 0.014 0.012 34.71 0.000 18.875 0.014 0. 013 35.64 0.000 I 18.917 0.014 0.014 36.58 0.000 18.958 0.014 0.014 37.53 0.000 19.000 0. 014 0.015 38.49 0.000 I 19.042 0.015 0.015 39.46 0.000 19.083 0.015 0.016 40.43 0.000 19.125 0.015 0. 017 41.42 0.000 19.167 0.015 0. 017 42.41 0.000 I 19.208 0.015 0.018 43.40 0.000 19.250 0.015 0.019 44.41 0.000 19.292 0.015 0.019 45.42 0.000 19.333 0.015 0.020 46.44 0.000 I 19.375 0.015 0.021 47.47 0.000 19.417 0.015 0.021 48.51 0.000 19.458 0.016 0.022 49.55 0.000 19.500 0.016 0.023 50.60 0.000 I 19.542 0. 016 0.023 51.66 0.000 19.583 0. 016 0.024 52.72 0.000 19. 625 0. 016 0.025 53.80 0.000 I 19.667 0.016 0.025 54.88 0.000 19.708 0. 016 0. 02 6 55.96 0.000 19.750 0.016 0.027 57.06 0.000 19.792 0.016 0.027 58.16 0.000 I Name IMP-2 Surface-2 Bottom Length: 0.00 ft. I Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 I I I I I I I I I I I I I I I I I I I I I Material thickness of second layer : 0 Pour Space of material for second layer 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft . Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-2 Name Bypass: No DMA E GroundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-3 Surface-3 Name IMP-3 OUtlet 2 Acres .085 0.085 Acres 0.262 0.262 0.347 Interflow IMP-3 Surface-3 Bottom Length: 80.00 ft. Bottom Width : 20.00 ft. Trench bottom slope 1: 0.01 To 1 Trench Left side slope 0: 3 To 1 Trench right side slope 2: 3 To 1 Material thickness of first layer : 1.5 Pour Space of mate~ial for first layer : 0.39 Material thickness of second layer : 0.25 Groundwater Pour Space of mate~ial for second layer : 0.35 Material thickness of third layer : 1 Pour Space of mate~ial for third layer : 0.4 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 12 in. Element Flows To: I I Outlet 1 Outlet 2 I I Landscape Swale Hydraulic Table Sta!le (ft~ Area~ac! Volume ~ac-ftl Discharg:e(cfsl Infilt(cfsl 18.000 0.036 0.000 0.000 0.000 I 18.042 0.037 0.000 0.000 0.000 18.083 0.037 0.001 0.000 0.000 18.125 0.038 0.001 0.000 0.000 18.167 0.038 0.002 0.000 0.000 I 18.208 0.039 0.003 0.000 0.000 18.250 0.039 0.003 0.000 0.000 18. 2 92 0.039 0.004 0.000 0.000 18.333 0.040 0.005 0.000 0.000 I 18.375 0.040 0.005 0.000 0.000 18.417 0.041 0.006 0.000 0.000 18.458 0.041 0.007 0.000 0.000 I 18.500 0.042 0.007 0.000 0.000 18.542 0.042 0.008 0.082 0.000 18.583 0.043 0.009 0.234 0.000 18.625 0.043 0.009 0.430 0.000 I 18.667 0.044 0.010 0.662 0.000 18.708 0.044 0. 011 0. 926 0.000 18.750 0.045 0.012 1.217 0.000 18.792 0.045 0.012 1. 534 0.000 I 18.833 0.045 0.013 1. 874 0.000 18.875 0.046 0.014 2.236 0.000 18.917 0.046 0.014 2.619 0.000 18.958 0.047 0.015 3.021 0.000 I 19.000 0.047 0. 016 3.443 0.000 19.042 0.048 0. 017 3.882 0.000 19.083 0.048 0.018 4.339 0.000 I 19.125 0. 04 9 0.018 4.812 0.000 19.167 0. 04 9 0.019 5.301 0.000 19.208 0.050 0.020 5.805 0.000 19.250 0.050 0.021 6.325 0.000 I 19.292 0.051 0.022 6.860 0.000 19.333 0.051 0.022 7.408 0.000 19.375 0.051 0.023 7. 971 0.000 19.417 0.052 0.024 8.547 0.000 I 19.458 0.052 0.025 9.136 0.000 19.500 0.053 0. 02 6 9.739 0.000 19.542 0.053 0.027 10.35 0.000 19.583 0.054 0.027 10.98 0.000 I 19.625 0.054 0.028 11.62 0.000 19.667 0.055 0.029 12.27 0.000 19.708 0.055 0.030 12.93 0.000 I 19.750 0. 05 6 0.031 13.61 0.000 19. 7 92 0. 05 6 0.032 14.29 0.000 19.833 0.056 0.033 14.99 0.000 19.875 0.057 0.034 15.70 0.000 I 19.917 0.057 0.034 16.42 0.000 19.958 0.058 0.035 17.15 0.000 20.000 0.058 0.036 17.89 0.000 I I I I 20.042 0.059 0.037 18.64 0.000 I 20.083 0.059 0.038 19.40 0.000 20.125 0.060 0.039 20.17 0.000 20.167 0.060 0.040 20.95 0.000 20.208 0.061 0.041 21.74 0.000 I 20.250 0.061 0.042 22.54 0.000 20.292 0.062 0.043 23.35 0.000 20.333 0.062 0.045 24.17 0.000 20.375 0. 062 0.046 25.00 0.000 I 20.417 0.063 0.047 25.84 0.000 20.458 0.063 0.048 26.69 0.000 20.500 0.064 0. 04 9 27.54 0.000 20.542 0.064 0.050 28.41 0.000 I 20.583 0.065 0.051 29.28 0.000 20.625 0.065 0.052 30.16 0.000 20.667 0.066 0.053 31.06 0.000 I 20.708 0.066 0.054 31.96 0.000 20.750 0.067 0.055 32.86 0.000 20.792 0.067 0.058 33.78 0.000 20.833 0.068 0. 061 34.71 0.000 I 20.875 0.068 0.064 35.64 0.000 20.917 0.068 0.067 36.58 0.000 20.958 0.069 0.070 37.53 0.000 21.000 0.069 0.072 38.49 0.000 I 21.042 0.070 0.075 39.46 0.000 21.083 0.070 0.078 40.43 0.000 21.125 0.071 0.081 41.42 0.000 21.167 0.071 0.084 42.41 0.000 I 21.208 0.072 0.087 43.40 0.000 21.250 0.072 0.090 44.41 0.000 21.292 0.073 0.093 45.42 0.000 I 21.333 0.073 0. 096 46.44 0.000 21.375 0.074 0.099 47.47 0.000 21.417 0.074 0.102 48.51 0.000 21.458 0.074 0.106 49.55 0.000 I 21.500 0.075 0.109 50.60 0.000 21.542 0.075 0.112 51.66 0.000 21.583 0.076 0.115 52.72 0.000 21.625 0.076 0.118 53.80 0.000 I 21.667 0.077 0.121 54.88 0.000 21.708 0. 077 0.125 55.96 0.000 21.750 0.078 0.128 57.06 0.000 I 21.792 0.078 0.131 58.16 0.000 Name IMP-3 Surface-3 I Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 I Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 I Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. I I I I I I I I I I I I I I I I I I I I I Element Flows To: Outlet 1 IMP-3 Name Bypass: No DMA F GroundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-4 Surface-4 Name IMP-4 Outlet 2 Acres .114 0.114 Acres 0.199 0.199 0.313 Interflow IMP-4 Surface-4 Bottom Length: 29.00 ft. Bottom Width : 15.00 ft. Trench bottom slope 1: 0.01 To 1 Trench Left side slope 0: 3 To 1 Trench right side slope 2: 3 To 1 Material thickness of first layer : 1.5 Pour Space of material for first layer : 0.39 Material thickness of second layer : 0.25 Groundwater Pour Space of material for second layer : 0.35 Material thickness of third layer : 1 Pour Space of material for third layer : 0.4 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Landscape Swale Hydraulic Table I I Stage ~ft~ Area ~ac~ Volume (ac-ft) Disc:harg:e(cfs~ Infilt(cfsl 17.000 0.010 0.000 0.000 0.000 I 17.042 0.010 0.000 0.000 0.000 17.083 0.010 0.000 0.000 0.000 17.125 0.010 0.000 0.000 0.000 I 17.167 0.010 0.000 0.000 0.000 17.208 0.010 0.000 0.000 0.000 17.250 0. 011 0.001 0.000 0.000 17. 2 92 0. 011 0.001 0.000 0.000 I 17.333 0. 011 0.001 0.000 0.000 17.375 0.011 0.001 0.000 0.000 17.417 0. 011 0.001 0.000 0.000 17.458 0. 011 0.001 0.000 0.000 I 17.500 0.012 0.002 0.000 0.000 17.542 0.012 0.002 0.082 0.000 17.583 0.012 0.002 0.234 0.000 17.625 0.012 0.002 0.430 0.000 I 17. 667 0.012 0.002 0.662 0.000 17.708 0.012 0.003 0. 926 0.000 17.750 0.013 0.003 1. 217 0.000 I 17.792 0.013 0.003 1. 534 0.000 17.833 0.013 0.003 1.874 0.000 17.875 0.013 0.004 2.236 0.000 17.917 0.013 0.004 2.619 0.000 I 17. 958 0.013 0.004 3.021 0.000 18.000 0.014 0.004 3.443 0.000 18.042 0.014 0.004 3.882 0.000 18.083 0.014 0.005 4.339 0.000 I 18.125 0.014 0.005 4.812 0.000 18.167 0.014 0.005 5.301 0.000 18.208 0.014 0.005 5.805 0.000 18.250 0.015 0.006 6.325 0.000 I 18.292 0.015 0.006 6.860 0.000 18.333 0.015 0.006 7.408 0.000 18.375 0.015 0.006 7.971 0.000 I 18.417 0.015 0.007 8.547 0.000 18.458 0.015 0.007 9.136 0.000 18.500 0.016 0.007 9.739 0.000 18.542 0.016 0.007 10.35 0.000 I 18.583 0.016 0.008 10.98 0.000 18.625 0. 016 0.008 11.62 0.000 18.667 0.016 0.008 12.27 0.000 18.708 0.016 0.008 12.93 0.000 I 18.750 0.017 0.009 13. 61 0.000 18.792 0.017 0.009 14.29 0.000 18.833 0.017 0.009 14.99 0.000 18.875 0.017 0.009 15.70 0.000 I 18.917 0.017 0.010 16.42 0.000 18.958 0.017 0.010 17.15 0.000 19.000 0.018 0.010 17.89 0.000 I 19.042 0.018 0. 011 18.64 0.000 19.083 0.018 0. 011 19.40 0.000 19.125 0.018 0. 011 20.17 0.000 19.167 0.018 0.012 20. 95 0.000 I 19.208 0.018 0.012 21.74 0.000 19.250 0. 019 0.012 22.54 0.000 19.292 0.019 0.013 23.35 0.000 I I I I I I I I I I I I I I I I I I , I I I 19.333 19.375 19.417 19.458 19.500 19.542 19.583 19.625 19.667 19.708 19.750 19.792 19.833 19.875 19.917 19.958 20.000 20.042 20.083 20.125 20.167 20.208 20.250 20.292 20.333 20.375 20.417 20.458 20.500 20.542 20.583 20.625 20.667 20.708 20.750 2 0. 7 92 0.019 0.019 0.019 0.019 0.020 0.020 0.020 0.020 0.020 0.020 0.021 0.021 0.021 0.021 0. 021 0.021 0.022 0.022 0.022 0.022 0.022 0.022 0.023 0.023 0.023 0.023 0.023 0.023 0.024 0.024 0.024 0.024 0.024 0.024 0.025 0.025 0.013 0.013 0.013 0.014 0.014 0.014 0.015 0.015 0.015 0.016 0. 016 0.017 0.018 0. 019 0.020 0.021 0.022 0.022 0.023 0.024 0.025 0. 026 0.027 0.028 0. 02 9 0.030 0.031 0.032 0.033 0.034 0.035 0.036 0.037 0.038 0.039 0.040 Name IMP-4 Surface-4 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. 24.17 25.00 25.84 26.69 27.54 28.41 29.28 30.16 31.06 31.96 32.86 33.78 34.71 35.64 36.58 37.53 38.49 39.46 40.43 41.42 42.41 43.40 44.41 45.42 46.44 47.47 48.51 49.55 50.60 51.66 52.72 53.80 54.88 55.96 57.06 58.16 Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-4 Outlet 2 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I Name Bypass: No DMA G GroundWatez:-: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-5 Surface-S Name IMP-5 Acres .035 0.035 Acres 0.108 0.108 0.143 Interflow IMP-S Surface-S Bottom Length: 11.00 ft. Bottom Width : 55.00 ft. Trench bottom slope 1: 0.01 To 1 Trench Left side slope 0: 3 To 1 Trench right side slope 2: 3 To 1 Material thickness of first layer : 1.5 Groundwater Pour Space of material for first layer : 0.39 Material thickness of second layer : 0.25 Pour Space of material for second layer : 0.35 Material thickness of third layer : 1 Pour Space of material for third layer : 0.4 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Landscape Swale Hydraulic Table Sta51e ~ft~ A:tea !ac~ Volume !ac-ft~ Discharge!cfsl Infilt!cfsl 33.000 0.013 0.000 0.000 0.000 33.042 0.014 0.000 0.000 0.000 33.083 0.014 0.000 0.000 0.000 33.125 0.014 0.000 0.000 0.000 33.167 0.014 0.000 0.000 0.000 33.208 0.014 0.001 0.000 0.000 I I 33.250 0.014 0.001 0.000 0.000 33.292 0.014 0.001 0.000 0.000 I 33.333 0.014 0.001 0.000 0.000 33.375 0.014 0.002 0.000 0.000 33.417 0.014 0.002 0.000 0.000 I 33.458 0.014 0.002 0.000 0.000 33.500 0.014 0.002 0.000 0.000 33.542 0. 014 0.003 0.082 0.000 33.583 0.014 0.003 0.234 0.000 I 33.625 0.014 0.003 0.430 0.000 33.667 0.014 0.003 0.662 0.000 33.708 0.015 0.004 0.926 0.000 33.750 0.015 0.004 1. 217 0.000 I 33. 7 92 0.015 0.004 1. 534 0.000 33.833 0.015 0.004 1. 87 4 0.000 33.875 0.015 0.005 2.236 0.000 I 33. 917 0.015 0.005 2.619 0.000 33.958 0.015 0.005 3.021 0.000 34.000 0.015 0.005 3.443 0.000 34.042 0.015 0.006 3.882 0.000 I 34.083 0.015 0.006 4.339 0.000 34.125 0.015 0.006 4.812 0.000 34.167 0.015 0.006 5.301 0.000 34.208 0.015 0.007 5.805 0.000 I 34.250 0.015 0.007 6.325 0.000 34.292 0.015 0.007 6.860 0.000 34.333 0.015 0.007 7.408 0.000 34.375 0.016 0.008 7. 971 0.000 I 34.417 0.016 0.008 8.547 0.000 34.458 0.016 0.008 9.136 0.000 34.500 0. 016 0.008 9.739 0.000 I 34.542 0. 016 0.009 10.35 0.000 34.583 0. 016 0.009 10.98 0.000 34.625 0. 016 0.009 11. 62 0.000 34.667 0. 016 0.009 12.27 0.000 I 34.708 0.016 0.010 12.93 0.000 34.750 0.016 0.010 13.61 0.000 34.792 0.016 0.010 14.2 9 0.000 34.833 0.016 0.010 14.99 0.000 I 34.875 0.016 0. 011 15.70 0.000 34.917 0.016 0. 011 16.42 0.000 34.958 0.016 0. 011 17.15 0.000 35.000 0. 016 0. 011 17.89 0.000 I 35.042 0.017 0.012 18. 64 0.000 35.083 0.017 0.012 19.40 0.000 35.125 0.017 0.012 20.17 0.000 I 35.167 0.017 0.013 20.95 0.000 35.208 0.017 0.013 21.74 0.000 35.250 0.017 0.013 22.54 0.000 35.292 0.017 0.013 23.35 0.000 I 35.333 0.017 0.014 24.17 0.000 35.375 0.017 0.014 25.00 0.000 35.417 0. 017 0.014 25.84 0.000 35.458 0. 017 0.015 26.69 0.000 I 35.500 0.017 0.015 27.54 0.000 35.542 0.017 0.015 28.41 0.000 35.583 0.017 0.016 29.28 0.000 I I I I I I I I I I I I I I I I I I I I I I 35.625 35.667 35.708 35.750 35.792 35.833 35.875 35.917 35.958 36.000 36.042 36.083 36.125 36.167 36.208 36.250 3 6. 2 92 36.333 36.375 36.417 36.458 36.500 36.542 36.583 36.625 36.667 36.708 36.750 36.792 0.017 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.018 0.019 0. 019 0.019 0.019 0. 019 0. 019 0. 019 0. 019 0.019 0.019 0.019 0.019 0.016 0.016 0.016 0.017 0.017 0.018 0. 019 0.020 0. 021 0.021 0.022 0.023 0.024 0. 024 0.025 0. 02 6 0.027 0.028 0.028 0.029 0.030 0.031 0.032 0.032 0.033 0.034 0.035 0. 036 0.036 Name IMP-S Surface-S Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. 30.16 31.06 31.96 32.86 33.78 34.71 35.64 36.58 37.53 38.49 39.46 40.43 41.42 42.41 43.40 44.41 45.42 46.44 47.47 48.51 49.55 50.60 51.66 52.72 53.80 54.88 55.96 57.06 58.16 Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-S Name DMA H Bypass: No GroundWater: No Pervious Land Use Outlet 2 Acres 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I I Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-6 Surface-6 Name IMP-6 0 Acres 0.047 0.047 0.047 Interflow IMP-6 Surface-6 Bottom Length: 114.00 ft. Bottom Width : 9.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Groundwater Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 Discharge Structure Riser Height: 0.5 ft. Riser Di~ter: 4 in. Element Flows To: Outlet 1 Outlet 2 Flow Through Planter Box Hydraulic Table Stag:e ~ft) ~ea~acl Volume ~ac-ft~ Dischar51e ~ cfs! Infilt,cfs! 0.0000 0.023 0.000 0.000 0.000 0.0444 0.023 0.000 0.000 0.000 0.0889 0.023 0.000 0.000 0.000 0.1333 0.023 0.001 0.000 0.000 0.1778 0.023 0.001 0.000 0.000 0.2222 0.023 0.002 0.000 0.000 0. 2 6 67 0.023 0.002 0.000 0.000 0.3111 0.023 0.003 0.000 0.000 0.3556 0.023 0.003 0.000 0.000 0.4000 0.023 0.004 0.000 0.000 0.4444 0.023 0.004 0.000 0.000 0.4889 0.023 0.005 0.000 0.000 0.5333 0.023 0.005 0.019 0.000 0.5778 0.023 0.005 0.070 0.000 I I 0.6222 0.023 0.006 0.138 0.000 I 0.6667 0.023 0.006 0.220 0.000 0.7111 0.023 0.007 0.314 0.000 0.7556 0.023 0.007 0.419 0.000 0.8000 0.023 0.008 0.533 0.000 I 0.8444 0.023 0.008 0. 656 0.000 0.8889 0.023 0.009 0.787 0.000 0.9333 0.023 0.009 0.926 0.000 0.9778 0.023 0.010 1. 072 0.000 I 1.0222 0.023 0.010 1. 225 0.000 1. 0667 0.023 0. 011 1. 384 0.000 1.1111 0.023 0. 011 1. 550 0.000 1.1556 0.023 0. 011 1. 723 0.000 I 1.2000 0.023 0.012 1.901 0.000 1. 2444 0.023 0.012 2.085 0.000 1.2889 0.023 0.013 2.274 0.000 I 1.3333 0.023 0.013 2.469 0.000 1.3778 0. 023 0. 014 2. 669 0.000 1.4222 0.023 0.014 2.875 0.000 1.4667 0.023 0.015 3.085 0.000 I 1.5111 0.023 0.015 3.300 0.000 1.5556 0.023 0. 016 3.520 0.000 1.6000 0.023 0.016 3.745 0.000 1.6444 0.023 0. 016 3.974 0.000 I 1.6889 0.023 0.017 4.208 0.000 1.7333 0.023 0.017 4.446 0.000 1.7778 0.023 0.018 4.689 0.000 1.8222 0.023 0.018 4.935 0.000 I 1.8667 0.023 0. 019 5.186 0.000 1.9111 0.023 0. 019 5.441 0.000 1. 9556 0.023 0.020 5.700 0.000 I 2.0000 0.023 0.020 5.963 0.000 2.0444 0.023 D. 021 6.230 0.000 2.0889 0.023 0.021 6.501 0.000 2.1333 0.023 0.021 6.776 0.000 I 2.1778 0.023 0.022 7.055 0.000 2.2222 0.023 0.022 7.337 0.000 2. 2 667 0.023 0.023 7.623 0.000 2.3111 0.023 0.023 7.912 0.000 I 2.3556 0.023 0.024 8.205 0.000 2.4000 0.023 0.024 8.502 0.000 2.4444 0.023 0.024 8.802 0.000 2.4889 0.023 0.025 9.105 0.000 I 2.5333 0.023 0.025 9.412 0.000 2.5778 0.023 0. 026 9. 722 0.000 2.6222 0.023 0. 02 6 10.03 0.000 I 2.6667 0.023 0.027 10.35 0.000 2. 7111 0.023 0.027 10.67 0.000 2.7556 0.023 0.027 10.99 0.000 2.8000 0.023 0.028 11.32 0.000 I 2.8444 0.023 0.028 11. 65 0.000 2.8889 0.023 0. 02 9 11. 98 0.000 2.9333 0.023 0. 029 12.32 0.000 2.9778 0.023 0.030 12.66 0.000 I 3.0222 0.023 0.031 13.00 0.000 3.0667 0.023 0.032 13.34 0.000 3.1111 0.023 0.033 13.69 0.000 I I I I I I I I I I I I I I I I I I I I I 3.1556 3.2000 3.2444 3.2889 3.3333 3.3778 3.4222 3.4667 3.5111 3.5556 3.6000 3.6444 3.6889 3.7333 3.7778 3.8222 3.8667 3.9111 3.9556 4.0000 4.0444 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.034 0.035 0.036 0.037 0.038 0.039 0.040 0.041 0.042 0.043 0.044 0.045 0. 04 6 0.047 0.048 0.050 0.051 0.052 0.053 0.054 0.055 14.04 14.40 14.76 15.12 15.48 15.84 16.21 16.58 16.96 17.33 17.71 18.10 18.48 18.87 19.26 19.65 20.05 20.45 20.85 21.25 21.66 Name IMP-6 Surface-6 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer Material thickness of second layer : 0 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-6 Name Bypass: No DMA I GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total OUtlet 2 Acres 0 Acres 0.077 0.077 0.077 0 0 0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 r. I I II I I I I I I I I I I I I I I I Element Flows To: Surface Interflow IMP-7 Surface-7 IMP-7 Surface-7 Name IMP-7 Bottom Length: 133.00 ft. Bottom Width : 9.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Spac• of material for first layer Material thickness of second layer : 1 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 Outlet 2 Groundwater 0.436 0.415 0.415 Flow Through Planter Box Hydraulic Table Stag:e ~ft! Area ~ac~ Volume ~ac-ftl Oischarge1cfsl Infilt~cfs~ 0.0000 0.027 0.000 0.000 0.000 0.0444 0.027 0.000 0.000 0.000 0.0889 0.027 0.001 0.000 0.000 0.1333 0.027 0.001 0.000 0.000 0.1778 0. 027 0.002 0.000 0.000 0.2222 0. 027 0.002 0.000 0.000 0.2667 0.027 0.003 0.000 0.000 0.3111 0.027 0.003 0.000 0.000 0.3556 0.027 0.004 0.000 0.000 0.4000 0.027 0.004 0.000 0.000 0.4444 0. 027 0.005 0.000 0.000 0.4889 0. 027 0.005 0.000 0.000 0.5333 0. 027 0.006 0.019 0.000 0.5778 0.027 0.006 0.070 0.000 0.6222 0.027 0.007 0.138 0.000 0.6667 0.027 0.008 0.220 0.000 0.7111 0.027 0.008 0.314 0.000 0.7556 0.027 0.009 0.419 0.000 0.8000 0.027 0.009 0.533 0.000 0.8444 0.027 0.010 0.656 0.000 0.8889 0.027 0.010 0.787 0.000 0.9333 0.027 0.011 0. 926 0.000 I I I I I I I I I I I I I I I I I I I 0.9778 1.0222 1.0667 1.1111 1.1556 1.2000 1.2444 1.2889 1.3333 1.3778 1.4222 1.4667 1.5111 1.5556 1.6000 1. 6444 1.6889 1.7333 1.7778 1.8222 1.8667 1.9111 1.9556 2.0000 2.0444 2.0889 2.1333 2.1778 2.2222 2.2667 2.3111 2.3556 2.4000 2.4444 2.4889 2.5333 2.5778 2.6222 2.6667 2. 7111 2.7556 2.8000 2.8444 2.8889 2.9333 2.9778 3.0222 3.0667 3.1111 3.1556 3.2000 3.2444 3.2889 3.3333 3.3778 3.4222 3. 4 667 0.027 0. 027 0.027 0. 027 0.027 0. 027 0.027 0.027 0.027 0. 027 o. 027 0.027 0.027 0.027 0.027 0.027 0. 027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0. 027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 o. 027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0.027 0. 027 0.027 0.027 0.027 0.027 0.027 0. 027 0. 011 0.012 0.012 0.013 0.013 0.014 0.014 0.015 0.016 0.016 0.017 0.017 0.018 0.018 0. 019 0. 019 0.020 0.020 0.021 0.021 0.022 0.022 0.023 0.023 0.024 0.025 0.025 0.026 0. 02 6 0.027 0.027 0.028 0.028 0.029 0.029 0.030 0.030 0.031 0.031 0.032 0.032 0.033 0.033 0.034 0.034 0.035 0.036 0.037 0.038 0.040 0.041 0.042 0.043 0.044 0. 04 6 0.047 0.048 1.072 1.225 1. 384 1. 550 1. 723 1.901 2.085 2.274 2.469 2. 669 2.875 3.085 3.300 3.520 3.745 3.974 4.208 4.446 4.689 4.935 5.186 5.441 5.700 5.963 6.230 6.501 6.776 7.055 7.337 7. 623 7.912 8.205 8.502 8.802 9.105 9.412 9. 722 10.03 10.35 10. 67 10.99 11.32 11.65 11.98 12.32 12.66 13.00 13.34 13.69 14.04 14.40 14.76 15.12 15.48 15.84 16.21 16.58 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I 3.5111 0.027 0.049 16.96 3.5556 0.027 0.051 17.33 3.6000 0. 027 0.052 17.71 3.6444 0.027 0.053 1S.10 3.6SS9 0.027 0.054 1S.4S 3.7333 0. 027 0.055 1S.S7 3.777S 0. 027 0.057 19.26 3.S222 0. 027 0.05S 19.65 3.S667 0. 027 0.059 20.05 3.9111 0.027 0.060 20.45 3.9556 0.027 0.062 20.S5 4.0000 0.027 0.063 21.25 4.0444 0.027 0.064 21.66 Name IMP-7 Surface-7 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-7 Name Bypass: No DMA J GroundWater: No Pervious Land Use Pervious Total Impervious Total Basin Total Element Flows To: Surface IMP-S Surface-S OUtlet 2 Acres 0 Acres 0.046 0.046 0.046 Interflow IMP-S Surface-S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Groundwater I I I I I I I I I I I I I I I I I I I Name IMP-8 Bottom Length: 22.00 ft. Bottom Width : 5.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Space of material for first layer Material thickness of second layer : 1 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: OUtlet 1 Outlet 2 0.436 0.415 0.415 Flow Through Planter Box Hydraulic Table Stage lft~ Area tac~ Volume ~ac-ft! Discharg:etcfs~ Infiltlcfs! 0.0000 0.002 0.000 0.000 0.000 0.0444 0.002 0.000 0.000 0.000 0.0889 0.002 0.000 0.000 0.000 0.1333 0.002 0.000 0.000 0.000 0.1778 0.002 0.000 0.000 0.000 0.2222 0.002 0.000 0.000 0.000 0.2667 0.002 0.000 0.000 0.000 0.3111 0.002 0.000 0.000 0.000 0.3556 0.002 0.000 0.000 0.000 0.4000 0.002 0.000 0.000 0.000 0.4444 0.002 0.000 0.000 0.000 0.4889 0.002 0.000 0.000 0.000 0.5333 0.002 0.000 0.019 0.000 0.5778 0.002 0.000 0.070 0.000 0.6222 0.002 0.000 0.138 0.000 0.6667 0.002 0.000 0.220 0.000 0.7111 0.002 0.000 0.314 0.000 0.7556 0.002 0.000 0.419 0.000 0.8000 0.002 0.000 0.533 0.000 0.8444 0.002 0.000 0.656 0.000 0.8889 0.002 0.001 0.787 0.000 0.9333 0.002 0.001 0.926 0.000 0.9778 0.002 0.001 1.072 0.000 1. 0222 0.002 0.001 1.225 0.000 1.0667 0.002 0.001 1.384 0.000 1.1111 0.002 0.001 1.550 0.000 1.1556 0.002 0.001 1.723 0.000 1.2000 0.002 0.001 1.901 0.000 1.2444 0.002 0.001 2.085 0.000 1.2889 0.002 0.001 2.274 0.000 I I 1.3333 0.002 0.001 2.469 0.000 1.3778 0.002 0.001 2.669 0.000 I 1.4222 0.002 0.001 2.875 0.000 1. 4 667 0.002 0.001 3.085 0.000 1.5111 0.002 0.001 3.300 0.000 I 1.5556 0.002 0.001 3.520 0.000 1.6000 0.002 0.001 3.745 0.000 1.6444 0.002 0.001 3.974 0.000 1. 6889 0.002 0.001 4.208 0.000 I 1. 7333 0.002 0.001 4.446 0.000 1. 7778 0.002 0.002 4.689 0.000 1.8222 0.002 0.002 4.935 0.000 1.8667 0.002 0.002 5.186 0.000 I 1.9111 0.002 0.002 5.441 0.000 1.9556 0.002 0.002 5.700 0.000 2.0000 0.002 0.002 5.963 0.000 I 2.0444 0.002 0.002 6.230 0.000 2.0889 0.002 0.002 6.501 0.000 2.1333 0.002 0.002 6.776 0.000 2.1778 0.002 0.002 7.055 0.000 I 2.2222 0.002 0.002 7.337 0.000 2. 2 667 0.002 0.002 7.623 0.000 2.3111 0.002 0.002 7.912 0.000 2.3556 0.002 0.002 8.205 0.000 I 2.4000 0.002 0.002 8.502 0.000 2.4444 0.002 0.002 8.802 0.000 2.4889 0.002 0.002 9.105 0.000 2.5333 0.002 0.002 9.412 0.000 I 2.5778 0.002 0.002 9. 722 0.000 2.6222 0.002 0.002 10.03 0.000 2.6667 0.002 0.002 10.35 0.000 I 2. 7111 0.002 0.002 10. 67 0.000 2.7556 0.002 0.003 10.99 0.000 2.8000 0.002 0.003 11.32 0.000 2.8444 0.002 0.003 11.65 0.000 I 2.8889 0.002 0.003 11.98 0.000 2.9333 0.002 0.003 12.32 0.000 2. 9778 0.002 0.003 12.66 0.000 3.0222 0.002 0.003 13.00 0.000 I 3.0667 0.002 0.003 13.34 0.000 3.1111 0.002 0.003 13.69 0.000 3.1556 0.002 0.003 14.04 0.000 3.2000 0.002 0.003 14.40 0.000 I 3.2444 0.002 0.003 14.76 0.000 3.2889 0.002 0.004 15.12 0.000 3.3333 0.002 0.004 15.48 0.000 I 3.3778 0.002 0.004 15.84 0.000 3.4222 0.002 0.004 16.21 0.000 3. 4 667 0.002 0.004 16.58 0.000 3.5111 0.002 0.004 16.96 0.000 I 3.5556 0.002 0.004 17.33 0.000 3.6000 0.002 0.004 17.71 0.000 3.6444 0.002 0.004 18.10 0.000 3.6889 0.002 0.005 18.48 0.000 I 3.7333 0.002 0.005 18.87 0.000 3.7778 0.002 0.005 19.26 0.000 3.8222 0.002 0.005 19.65 0.000 I I I I I I I I I I I I I I I I I I I I I 3. 8 667 0.002 0.005 20.05 3.9111 0.002 0.005 20.45 3.9556 0.002 0.005 20.85 4.0000 0.002 0.005 21.25 4.0444 0.002 0.005 21. 66 Name IMP-8 Surface-S Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-8 Name DMA K Bypass: Yes GroundWater: No Pervious Land Use B,Grass,FLAT(0-5%) Pervious Total Impervious Land Use Impervious Total Basin Total Element Flows To: Surface Name DMA L Bypass: Yes GroundWater: No Pervious Land Use Outlet 2 Acres .0068 0.0068 Acres 0 0.0068 Interflow Acres 0.000 0.000 0.000 0.000 0.000 Groundwater I I I I I I I I I I I I I I I I I I I B,G~ass,STEEP(l0-20 Pervious Total Impervious Land Use Impervious Total Basin Total Elemebt Flows To: Surfaee Name DMA M Bypass: No GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPEII.VIOUS-FLAT Impervious Total Basin Total Element Flows To: Surfat:e IMP-9 Surface-9 Name IMP-9 .0077 0.0077 Acres 0 0. 0077 Interflow Acres 0 Acres 0.053 0.053 0.053 Interflow IMP-9 Surface-9 Botto~ Length: 47.00 ft. Botto~ Width : 10.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Space of material for first layer Material thickness of second layer : 1 Pour Space of material for second layer : Material thickness of thi~d layer : 0 Pour Space of material for third layer : Discharge Structure Groundwater Groundwater 0.436 0.415 0.415 I I Riser Height: 0.5 ft. I Riser Diameter: 4 in. Element Flows To: Outlet 1 OUtlet 2 I I Flow Through Planter Box Hydraulic Table Sta51e 'ft~ Area ~ao} Volume 'ac-ftl Discharg:e,cfs! Infiltlcfs} 0.0000 0.010 0.000 0.000 0.000 I 0.0444 0.010 0.000 0.000 0.000 0.0889 0.010 0.000 0.000 0.000 0.1333 0.010 0.000 0.000 0.000 0 .1778 0.010 0.000 0.000 0.000 I 0.2222 0.010 0.001 0.000 0.000 0.2667 0.010 0.001 0.000 0.000 0.3111 0.010 0.001 0.000 0.000 I 0.3556 0.010 0.001 0.000 0.000 0.4000 0.010 0.001 0.000 0.000 0.4444 0.010 0.002 0.000 0.000 0.4889 0.010 0.002 0.000 0.000 I 0.5333 0.010 0.002 0.019 0.000 0.5778 0.010 0.002 0.070 0.000 0.6222 0.010 0.002 0.138 0.000 0.6667 0.010 0.003 0.220 0.000 I 0. 7111 0.010 0.003 0.314 0.000 0.7556 0.010 0.003 0.419 0.000 0.8000 0.010 0.003 0.533 0.000 0.8444 0.010 0.004 0. 656 0.000 I 0.8889 0.010 0.004 0.787 0.000 0.9333 0.010 0.004 0. 926 0.000 0.9778 0.010 0.004 1. 072 0.000 I 1.0222 0.010 0.004 1. 225 0.000 1.0667 0.010 0.005 1. 384 0.000 1.1111 0.010 0.005 1. 550 0.000 1.1556 0.010 0.005 1. 723 0.000 I 1. 2000 0.010 0.005 1.901 0.000 1.2444 0.010 0.005 2.085 0.000 1. 2889 0.010 0.006 2.274 0.000 1.3333 0.010 0.006 2.469 0.000 I 1.3778 0.010 0.006 2.669 0.000 1.4222 0.010 0.006 2.875 0.000 1.4667 0.010 0.006 3.085 0.000 I 1.5111 0.010 0.007 3.300 0.000 1.5556 0.010 0.007 3.520 0.000 1.6000 0.010 0.007 3.745 0.000 1.6444 0.010 0.007 3.974 0.000 I 1.6889 0.010 0.007 4.208 0.000 1.7333 0.010 0.008 4.446 0.000 1. 7778 0.010 0.008 4.689 0.000 1.8222 0.010 0.008 4.935 0.000 I 1.8667 0.010 0.008 5.186 0.000 1.9111 0.010 0.009 5.441 0.000 1.9556 0.010 0.009 5.700 0.000 I I I I 2.0000 0.010 0.009 5. 963 0.000 I 2.0444 0.010 0.009 6.230 0.000 2.0889 0.010 0.009 6.501 0.000 2.1333 0.010 0.010 6.776 0.000 2.1778 0.010 0.010 7.055 0.000 I 2.2222 0.010 0.010 7.337 0.000 2.2667 0.010 0.010 7. 623 0.000 2.3111 0.010 0.010 7.912 0.000 2.3556 0.010 0. 011 8.205 0.000 I 2.4000 0.010 0. 011 8.502 0.000 2.4444 0.010 0. 011 8.802 0.000 2.4889 0.010 0. 011 9.105 0.000 2.5333 0.010 0. 011 9.412 0.000 I 2.5778 0.010 0.012 9. 722 0.000 2.6222 0.010 0.012 10.03 0.000 2.6667 0.010 0.012 10.35 0.000 I 2. 7111 0.010 0.012 10.67 0.000 2.7556 0.010 0.012 10.99 0.000 2.8000 0.010 0.013 11. 32 0.000 2.8444 0.010 0.013 11.65 0.000 I 2.8889 0.010 0.013 11.98 0.000 2.9333 0.010 0.013 12. 32 0.000 2.9778 0.010 0.013 12.66 0.000 3.0222 0.010 0.014 13.00 0.000 I 3.0667 0.010 0.014 13.34 0.000 3.1111 0.010 0.015 13.69 0.000 3.1556 0.010 0.015 14.04 0.000 3.2000 0.010 0.016 14.40 0.000 I 3.2444 0.010 0.016 14.76 0.000 3.2889 0.010 0.017 15.12 0.000 3.3333 0.010 0.017 15.48 0.000 I 3.3778 0.010 0.018 15.84 0.000 3.4222 0.010 0.018 16.21 0.000 3.4667 0.010 0. 019 16.58 0.000 3.5111 0.010 0. 019 16.96 0.000 I 3.5556 0.010 0.020 17.33 0.000 3.6000 0.010 0.020 17.71 0.000 3.6444 0.010 0.021 18.10 0.000 3.6889 0.010 0.021 18.48 0.000 I 3.7333 0.010 0.021 18.87 0.000 3.7778 0.010 0.022 19.26 0.000 3.8222 0.010 0.022 19.65 0.000 3.8667 0.010 0.023 20.05 0.000 I 3.9111 0.010 0.023 20.45 0.000 3.9556 0.010 0.024 20.85 0.000 4.0000 0.010 0.024 21.25 0.000 I 4.0444 0.010 0.025 21.66 0.000 Name IMP-9 Surface-9 I Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 I Material thickness of second layer : 0 Pour Space of material for second layer 0 Material thickness of third layer : 0 I I I I I I I I I I I I I I I I I I I I I Pour Space of material for third layer Discharge Structure Riser Heiqht: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet l IMP-9 Name DMA N Bypass: No GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-10 Surface10 Name IMP-10 Outlet 2 Acres 0 Acres 0.0806 0.0806 0.0806 Inter£ low IMP-10 Surface10 Bottom Length: 52.00 ft. Bottom Width : 20.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Space of material for first layer Material thickness of second layer : 1 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 Outlet 2 0 Groundwater 0.436 0.415 0.415 I I I Flow Through Planter Box Hydraulic Table Stage {ft~ Area{ae:} Volume{ac ft} Dischar9!{cfs} Infilt{cfs} 0.0000 0. 023 0.000 0.000 0.000 I 0.0444 0. 023 0.000 0.000 0.000 0.0889 0. 023 0.000 0.000 0.000 0.1333 0.023 0.001 0.000 0.000 0.1778 0.023 0.001 0.000 0.000 I 0.2222 0.023 0.002 0.000 0.000 0.2667 0.023 0.002 0.000 0.000 0.3111 0.023 0.003 0.000 0.000 0.3556 0.023 0.003 0.000 0.000 I 0.4000 0.023 0.004 0.000 0.000 0.4444 0.023 0.004 0.000 0.000 0.4889 0.023 0.005 0.000 0.000 0.5333 0.023 0.005 0. 019 0.000 I 0.5778 0.023 0.006 0.070 0.000 0.6222 0.023 0.006 0.138 0.000 0.6667 0. 023 0.006 0.220 0.000 I 0. 7111 0.023 0.007 0.314 0.000 0.7556 0.023 0.007 0.419 0.000 0.8000 0.023 0.008 0.533 0.000 0.8444 0.023 0.008 0.656 0.000 I 0.8889 0.023 0.009 0.787 0.000 0.9333 0.023 0.009 0.926 0.000 0.9778 0.023 0.010 1.072 0.000 1.0222 0.023 0.010 1. 225 0.000 I 1.0667 0.023 0. 011 1.384 0.000 1.1111 0.023 0. 011 1.550 0.000 1.1556 0.023 0.012 1.723 0.000 1.2000 0.023 0.012 1.901 0.000 I 1. 2444 0.023 0.013 2.085 0.000 1.2889 0.023 0.013 2.274 0.000 1.3333 0.023 0.013 2.469 0.000 I 1.3778 0.023 0.014 2.669 0.000 1.4222 0.023 0.014 2.875 0.000 1.4667 0.023 0.015 3.085 0.000 1.5111 0.023 0.015 3.300 0.000 I 1.5556 0.023 0.016 3.520 0.000 1.6000 0.023 0.016 3.745 0.000 1.6444 0.023 0.017 3.974 0.000 1.6889 0.023 0.017 4.208 0.000 I 1.7333 0.023 0.018 4.446 0.000 1.7778 0.023 0.018 4.689 0.000 1.8222 0.023 0.019 4.935 0.000 1. 8667 0.023 0.019 5.186 0.000 I 1.9111 0.023 0.019 5.441 0.000 1.9556 0.023 0.020 5.700 0.000 2.0000 0.023 0.020 5.963 0.000 I 2.0444 0.023 0.021 6.230 0.000 2.0889 0.023 0.021 6.501 0.000 2.1333 D. 023 0.022 6.776 0.000 2.1778 0.023 0.022 7.055 0.000 I 2.2222 0.023 0.023 7.337 0.000 2.2667 0.023 0.023 7. 623 0.000 2.3111 0.023 0.023 7. 912 0.000 I I I I I I I I I I I I I I I I I I I I I 2.3556 2.4000 2.4444 2.4889 2.5333 2.5778 2.6222 2.6667 2. 7111 2.7556 2.8000 2.8444 2.8889 2.9333 2.9778 3.0222 3.0667 3.1111 3.1556 3.2000 3.2444 3.2889 3.3333 3.3778 3.4222 3.4667 3.5111 3.5556 3.6000 3.6444 3.6889 3.7333 3.7778 3.8222 3.8667 3.9111 3.9556 4.0000 4.0444 0.023 0.023 0.023 0.023 0.023 0. 023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0. 023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.024 0.024 0.025 0.025 0. 026 0.026 0.027 0.027 0. 027 0.028 0.028 0.029 0. 02 9 0.030 0.030 0.031 0.032 0.033 0.034 0.035 0.036 0.037 0.039 0.040 0.041 0.042 0.043 0.044 0.045 0.046 0.047 0.048 0.049 0.050 0.051 0.052 0.053 0.054 0.056 Name IMP-10 SurfacelO Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. 8.205 8.502 8. 802 9.105 9.412 9. 722 10.03 10.35 10.67 10.99 11.32 11.65 11.98 12.32 12.66 13.00 13.34 13.69 14.04 14.40 14.76 15.12 15.48 15.84 16.21 16.58 16.96 17.33 17.71 18.10 18.48 18.87 19.26 19.65 20.05 20.45 20.85 21.25 21.66 Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-10 Outlet 2 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I I Name ByPass: No DMA 0 GroundWater: No P~rvious Land Use Parvious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-11 Surface11 Name IMP-11 Acres 0 Acres 0.0256 0.0256 0.0256 Interflow IMP-11 Surface11 Bottom Length: 46.00 ft. Bottom Width : 5.00 ft. T~ench bottom slope 1: 0 To 1 T~ench Left side slope 0: 0 To 1 T~ench right side slope 2: 0 To 1 Material thickness of first layer : 2 Groundwater Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 OUtlet 2 Flow Through Planter Box Hydraulic Table Stag:e ~ft~ Area {ac~ Volume jac-ft) Discharg:e {cfsl Infiltjcfs) o.oooo 0.005 0.000 0.000 0.000 0.0444 0.005 0.000 0.000 0.000 0.0889 0.005 0.000 0.000 0.000 0.1333 0.005 0.000 0.000 0.000 I I I 0.1778 0.005 0.000 0.000 0.000 0.2222 0.005 0.000 0.000 0.000 I 0.2667 0.005 0.000 0.000 0.000 : I 0.3111 0.005 0.000 0.000 0.000 0.3556 0.005 0.000 0.000 0.000 I 0.4000 0.005 0.000 0.000 0.000 0.4444 0.005 0.001 0.000 0.000 0.4889 0.005 0.001 0.000 0.000 0.5333 0.005 0.001 0.019 0.000 I 0.5778 0.005 0.001 0.070 0.000 0.6222 0.005 0.001 0.138 0.000 0.6667 0.005 0.001 0.220 0.000 0. 7111 0.005 0.001 0.314 0.000 I 0.7556 0.005 0.001 0.419 0.000 0.8000 0.005 0.001 0.533 0.000 0.8444 0.005 0.001 0.656 0.000 I 0.8889 0.005 0.002 0.787 0.000 0.9333 0.005 0.002 0. 926 0.000 0.9778 0.005 0.002 1.072 0.000 1.0222 0.005 0.002 1. 225 0.000 I 1.0667 0.005 0.002 1.384 0.000 1.1111 0.005 0.002 1. 550 0.000 1.1556 0.005 0.002 1. 723 0.000 1.2000 0.005 0.002 1.901 0.000 I 1. 2444 0.005 0.002 2.085 0.000 1.2889 0.005 0.003 2.274 0.000 1.3333 0.005 0.003 2.469 0.000 1.3778 0.005 0.003 2.669 0.000 I 1.4222 0.005 0.003 2.875 0.000 1.4667 0.005 0.003 3.085 0.000 1.5111 0.005 0.003 3.300 0.000 I 1.5556 0.005 0.003 3.520 0.000 1.6000 0.005 0.003 3.745 0.000 1.6444 0.005 0.003 3.974 0.000 1.6889 0.005 0.003 4.208 0.000 I 1.7333 0.005 0.004 4.446 0.000 1.7778 0.005 0.004 4.689 0.000 1.8222 0.005 0.004 4.935 0.000 1.8667 0.005 0.004 5.186 0.000 I 1.9111 0.005 0.004 5.441 0.000 1.9556 0.005 0.004 5.700 0.000 2.0000 0.005 0.004 5. 963 0.000 2.0444 0.005 0.004 6.230 0.000 I 2.0889 0.005 0.004 6.501 0.000 2.1333 0.005 0.004 6. 776 0.000 2.1778 0.005 0.005 7.055 0.000 I 2.2222 0.005 0.005 7.337 0.000 2.2667 0.005 0.005 7. 623 0.000 2. 3111 0.005 0.005 7.912 0.000 2.3556 0.005 0.005 8.205 0.000 I 2.4000 0.005 0.005 8.502 0.000 2.4444 0.005 0.005 8.802 0.000 2.4889 0.005 0.005 9.105 0.000 2.5333 0.005 0.005 9.412 0.000 I 2.5778 0.005 0.005 9.722 0.000 2.6222 0.005 0.006 10.03 0.000 2.6667 0.005 0.006 10.35 0.000 I I I I I I I I I I I I I I I I I I I I I 2. 7111 2.7556 2.8000 2.8444 2.8889 2.9333 2.9778 3.0222 3. 0 667 3.1111 3.1556 3.2000 3.2444 3.2889 3.3333 3.3778 3.4222 3.4667 3.5111 3.5556 3.6000 3.6444 3.6889 3.7333 3.7778 3.8222 3.8667 3.9111 3.9556 4.0000 4.0444 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.007 0.007 0.007 0.007 0.007 0.008 0.008 0.008 0.008 0.009 0.009 0.009 0.009 0.010 0.010 0.010 0.010 0. 011 0. 011 0. 011 0. 011 0. 011 0.012 0.012 Name IMP-11 Surface11 Bottom Length: 0.00 ft. Bottom Width ; 0.00 ft. 10.67 10.99 11.32 11.65 11.98 12.32 12.66 13.00 13.34 13.69 14.04 14.40 14.76 15.12 15.48 15.84 16.21 16.58 16.96 17.33 17.71 18.10 18.48 18.87 19.26 19.65 20.05 20.45 20.85 21.25 21.66 Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height; 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-11 Name DMA P Bypass: No GroundWater: No Outlet 2 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I I Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-12 Surface12 Name IMP-12 Acres 0 Acres 0.028 0.028 0.028 Interflow IMP-12 Surfacel2 Bottom Length: 68.00 ft. Bottom Width : 5.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Groundwater Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 Outlet 2 Flow Through Planter Box Hydraulic Table Stage ~ft! Area lac~ Volume 'ac ft! Discharge 'cfs! Infilt,cfs! 0.0000 0.007 0.000 0.000 0.000 0.0444 0.007 0.000 0.000 0.000 0.0889 0.007 0.000 0.000 0.000 0.1333 0.007 0.000 0.000 0.000 0.1778 0.007 0.000 0.000 0.000 0.2222 0.007 0.000 0.000 0.000 0.2667 0.007 0.000 0.000 0.000 0.3111 0.007 0.001 0.000 0.000 0.3556 0.007 0.001 0.000 0.000 0.4000 0.007 0.001 0.000 0.000 0.4444 0.007 0.001 0.000 0.000 0.4889 0.007 0.001 0.000 0.000 I I 0.5333 0.007 0.001 0.019 0.000 0.5778 0.007 0.002 0.070 0.000 I 0.6222 0.007 0.002 0.138 0.000 0.6667 0.007 0.002 0.220 0.000 0. 7111 0.007 0.002 0.314 0.000 I 0.7556 0.007 0.002 0.419 0.000 0.8000 0.007 0.002 0.533 0.000 0.8444 0.007 0.002 0.656 0.000 0.8889 0.007 0.003 0.787 0.000 I 0.9333 0.007 0.003 0. 926 0.000 0.9778 0.007 0.003 1. 072 0.000 1.0222 0.007 0.003 1. 225 0.000 1.0667 0.007 0.003 1. 384 0.000 I 1.1111 0.007 0.003 1. 550 0.000 1.1556 0.007 0.003 1.723 0.000 1.2000 0.007 0.004 1.901 0.000 I 1.2444 0.007 0.004 2.085 0.000 1.2889 0.007 0.004 2.274 0.000 1.3333 0.007 0.004 2.469 0.000 1.3778 0.007 0.004 2.669 0.000 I 1.4222 0.007 0.004 2.875 0.000 1. 4 667 0.007 0.005 3.085 0.000 1.5111 0.007 0.005 3.300 0.000 1. 5556 0.007 0.005 3.520 0.000 I 1. 6000 0.007 0.005 3.745 0.000 1.6444 0.007 0.005 3.974 0.000 1.6889 0.007 0.005 4.208 0.000 1.7333 0.007 0.005 4.446 0.000 I 1.7778 0.007 0.006 4.689 0.000 1.8222 0.007 0.006 4.935 0.000 1. 8 667 0.007 0.006 5.186 0.000 I 1.9111 0.007 0.006 5.441 0.000 1.9556 0.007 0.006 5.700 0.000 2.0000 0.007 0.006 5.963 0.000 2.0444 0.007 0.006 6.230 0.000 I 2.0889 0.007 0.007 6.501 0.000 2.1333 0.007 0.007 6.776 0.000 2.1778 0.007 0.007 7.055 0.000 2.2222 0.007 0.007 7.337 0.000 I 2.2667 0.007 0.007 7.623 0.000 2.3111 0.007 0.007 7.912 0.000 2.3556 0.007 0.008 8.205 0.000 2.4000 0.007 0.008 8.502 0.000 I 2.4444 0.007 0.008 8.802 0.000 2.4889 0.007 0.008 9.105 0.000 2.5333 0.007 0.008 9.412 0.000 I 2.5778 0.007 0.008 9.722 0.000 2.6222 0.007 0.008 10.03 0.000 2.6667 0.007 0.009 10.35 0.000 2. 7111 0.007 0.009 10. 67 0.000 I 2.7556 0.007 0.009 10.99 0.000 2.8000 0.007 0.009 11.32 0.000 2.8444 0.007 0.009 11.65 0.000 2.8889 0.007 0.009 11. 98 0.000 I 2.9333 0.007 0.009 12.32 0.000 2. 9778 0.007 0.010 12.66 0.000 3.0222 0.007 0.010 13.00 0.000 I I I I I I I I I I I I I I I I I I I I I 3.0667 3.1111 3.1556 3.2000 3.2444 3.2889 3.3333 3.3778 3.4222 3.4667 3.5111 3.5556 3.6000 3.6444 3.6889 3.7333 3.7778 3.8222 3.8667 3.9111 3.9556 4.0000 4.0444 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.007 0.010 0. 011 0. 011 0. 011 0.012 0.012 0.012 0.013 0.013 0.013 0.014 0.014 0.014 0.015 0.015 0.015 0.016 0.016 0.016 0.017 0.017 0.017 0.018 13.34 13.69 14.04 14.40 14.76 15.12 15.48 15.84 16.21 16. 58 16.96 17.33 17.71 18.10 18.48 18.87 19.26 19.65 20.05 20.45 20.85 21.25 21.66 Name IMP-12 Surface12 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. ~teria1 thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-12 Name Bypass: No DMA Q GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Outlet 2 Acres 0 Acres 0.0759 0.0759 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I I I I I I I I I I I I I I I I I I Basin Total 0.0759 Element Flows To: Surface Interflow IMP-13 Surface13 IMP-13 Surface13 Name IMP-13 Bottom Length: 62.00 ft. Bottom Width : 21.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Groundwater Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 OUtlet 2 Flow Through Planter Box Hydraulic Table Stag:e ~ft! Area ~ac! Volume ~ac ft! Discharsr.e~cfs! Infilt~cfsl 0.0000 0. 02 9 0.000 0.000 0.000 0.0444 0. 029 0.000 0.000 0.000 0.0889 0.029 0.001 0.000 0.000 0.1333 0.029 0.001 0.000 0.000 0.1778 0.029 0.002 0.000 0.000 0.2222 0.029 0.002 0.000 0.000 0.2667 0.029 0.003 0.000 0.000 0.3111 0.029 0.004 0.000 0.000 0.3556 0.029 0.004 0.000 0.000 0.4000 0.029 0.005 0.000 0.000 0.4444 0.029 0.005 0.000 0.000 0.4889 0.029 0.006 0.000 0.000 0.5333 0. 02 9 0.007 0.019 0.000 0.5778 0. 02 9 0.007 0.070 0.000 0.6222 0. 02 9 0.008 0.138 0.000 0.6667 0. 029 0.008 0.220 0.000 0. 7111 0.029 0.009 0.314 0.000 0.7556 0.029 0.009 0.419 0.000 0.8000 0.029 0.010 0.533 0.000 0.8444 0.029 0.011 0.656 0.000 I I 0.8889 0.029 0. 011 0.787 0.000 I 0.9333 0.029 0.012 0.926 0.000 0.9778 0.029 0.012 1. 072 0.000 1.0222 0.029 0.013 1. 225 0.000 1. 0667 0.029 0.013 1.384 0.000 I 1.1lll 0.029 0.014 1.550 0.000 1.1556 0.029 0.015 1.723 0.000 1.2000 0. 02 9 0.015 1.901 0.000 1. 2444 0.029 0.016 2.085 0.000 I 1.2889 0.029 0.016 2.274 0.000 1.3333 0.029 0.017 2.469 0.000 1.3778 0.029 0.018 2.669 0.000 1.4222 0.029 0.018 2.875 0.000 I 1.4667 0.029 0. 019 3.085 0.000 1. 51ll 0. 029 0.019 3.300 0.000 1. 5556 0. 029 0.020 3.520 0.000 I 1.6000 0.029 0.020 3.745 0.000 1.6444 0.029 0.021 3.974 0.000 1.6889 0.029 0.022 4.208 0.000 1.7333 0.029 0.022 4.446 0.000 I 1.7778 0.029 0.023 4.689 0.000 1.8222 0.029 0.023 4.935 0.000 1.8667 0.029 0.024 5.186 0.000 1.911l 0. 02 9 0.024 5.441 0.000 I 1.9556 0. 02 9 0.025 5.700 0.000 2.0000 0. 029 0.026 5. 963 0.000 2.0444 0.029 0.026 6.230 0.000 2.0889 0.029 0.027 6.501 0.000 I 2.1333 0.029 0.027 6.776 0.000 2.1778 0.029 0.028 7.055 0.000 2.2222 0.029 0.028 7.337 0.000 I 2.2667 0.029 0. 02 9 7.623 0.000 2.3l11 0.029 0. 029 7.912 0.000 2.3556 0.029 0.030 8.205 0.000 2.4000 0. 02 9 0.031 8.502 0.000 I 2.4444 0.029 0.031 8. 802 0.000 2.4889 0.029 0.032 9.105 0.000 2.5333 0.029 0.032 9.412 0.000 2.5778 0.029 0.033 9. 722 0.000 I 2.6222 0.029 0.033 10.03 0.000 2.6667 0.029 0.034 10.35 0.000 2.7111 0.029 0.034 10. 67 0.000 2.7556 0.029 0.035 10.99 0.000 I 2.8000 0.029 0.036 11.32 0.000 2.8444 0.029 0.036 ll. 65 0.000 2.8889 0. 02 9 0.037 11.98 0.000 I 2.9333 0. 02 9 0.037 12.32 0.000 2.9778 0.029 0.038 12.66 0.000 3.0222 0.029 0.039 13.00 0.000 3.0667 0.029 0.040 13.34 0.000 I 3 .llll 0.029 0.042 13.69 0.000 3.1556 0.029 0.043 14.04 0.000 3.2000 0.029 0.044 14.40 0.000 3.2444 0. 02 9 0.046 14.76 0.000 I 3.2889 0.029 0.047 15.12 0.000 3.3333 0.029 0.048 15.48 0.000 3.3778 0.029 0.050 15.84 0.000 I I I I I I I I I I I I I I I I I I I I I 3.4222 0. 02 9 0.051 16.21 3.4667 0. 02 9 0.052 16.58 3.5111 0. 02 9 0.054 16.96 3.5556 0. 02 9 0.055 17.33 3.6000 0.029 0.056 17. 7l 3.6444 0. 02 9 0.058 18.10 3.6889 0.029 0.059 18.48 3.7333 0.029 0.060 18.87 3.7778 0.029 0.062 19.26 3.8222 0.029 0.063 19.65 3.8667 0.029 0.064 20.05 3.9111 0.029 0.066 20.45 3.9556 0.029 0.067 20.85 4.0000 0. 02 9 0.068 21.25 4.0444 0. 02 9 0.070 21.66 Name IMP-13 Surface13 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-13 Name DMA R Bypass: No GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface OUtlet 2 Acres 0 Acres 0.0235 0.0235 0.0235 Interflow 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Groundwater I I I I I I I I I I I I I I I I I I I IMP-14 Surface14 IMP-14 Surface14 Name IMP-14 Bottom Length: 51.00 ft. Bottom Width : 4.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Space of material for first layer Material thickness of second layer : 1 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: OUtlet 1 OUtlet 2 0.436 0.415 0.415 Flow Through Planter Box Hydraulic Table Stag:e ~ftl Area ~acl Volume ~ac-ftl Discharg:a~cfsl Infilt~cfsl 0.0000 0.004 0.000 0.000 0.000 0.0444 0.004 0.000 0.000 0.000 0.0889 0.004 0.000 0.000 0.000 0.1333 0.004 0.000 0.000 0.000 0.1778 0.004 0.000 0.000 0.000 0.2222 0.004 0.000 0.000 0.000 0. 2 667 0.004 0.000 0.000 0.000 0.3111 0.004 0.000 0.000 0.000 0.3556 0.004 0.000 0.000 0.000 0. 4 000 0.004 0.000 0.000 0.000 0.4444 0.004 0.000 0.000 0.000 0.4889 0.004 0.001 0.000 0.000 0.5333 0.004 0.001 0. 019 0.000 0.5778 0.004 0.001 0.070 0.000 0.6222 0.004 0.001 0.138 0.000 0.6667 0.004 0.001 0.220 0.000 0. 7111 0.004 0.001 0.314 0.000 0.7556 0.004 0.001 0.419 0.000 0.8000 0.004 0.001 0.533 0.000 0.8444 0.004 0.001 0. 656 0.000 0.8889 0.004 0.001 0.787 0.000 0.9333 0.004 0.001 0. 92 6 0.000 0.9778 0.004 0.002 1.072 0.000 1.0222 0.004 0.002 1. 225 0.000 1.0667 0.004 0.002 1.384 0.000 1.1111 0.004 0.002 1. 550 0.000 1.1556 0.004 0.002 1.723 0.000 1.2000 0.004 0.002 1.901 0.000 I I 1.2444 0.004 0.002 2.085 0.000 1.2889 0.004 0.002 2.274 0.000 I 1.3333 0.004 0.002 2.469 0.000 1.3778 0.004 0.002 2.669 0.000 1.4222 0.004 0.002 2.875 0.000 I 1. 4 667 0.004 0.003 3.085 0.000 1.5111 0.004 0.003 3.300 0.000 1.5556 0.004 0.003 3.520 0.000 1.6000 0.004 0.003 3. 745 0.000 I 1.6444 0.004 0.003 3.974 0.000 1.6889 0.004 0.003 4.208 0.000 1.7333 0.004 0.003 4.446 0.000 1. 7778 0.004 0.003 4.689 0.000 I 1.8222 0.004 0.003 4.935 0.000 1. 8 6 67 0.004 0.003 5.186 0.000 1.9111 0.004 0.003 5.441 0.000 1.9556 0.004 0.004 5.700 0.000 I 2.0000 0.004 0.004 5.963 0.000 2.0444 0.004 0.004 6.230 0.000 2.0889 0.004 0.004 6.501 0.000 I 2.1333 0.004 0.004 6.776 0.000 2.1778 0.004 0.004 7.055 0.000 2.2222 0.004 0.004 7.337 0.000 2.2667 0.004 0.004 7.623 0.000 I I 2.3111 0.004 0.004 7.912 0.000 2.3556 0.004 0.004 8.205 0.000 2.4000 0.004 0.004 8.502 0.000 2.4444 0.004 0.004 8. 802 0.000 I 2.4889 0.004 0.005 9.105 0.000 2.5333 0.004 0.005 9.412 0.000 2.5778 0.004 0.005 9. 722 0.000 2.6222 0.004 0.005 10.03 0.000 I 2.6667 0.004 0.005 10.35 0.000 2. 7111 0.004 0.005 10.67 0.000 2.7556 0.004 0.005 10.99 0.000 I 2.8000 0.004 0.005 11.32 0.000 2.8444 0.004 0.005 11.65 0.000 2.8889 0.004 0.005 11. 98 0.000 2.9333 0.004 0.005 12.32 0.000 I 2.9778 0.004 0.006 12.66 0.000 3.0222 0.004 0.006 13.00 0.000 3.0667 0.004 0.006 13.34 0.000 3.1111 0.004 0.006 13.69 0.000 I 3.1556 0.004 0.006 14.04 0.000 3.2000 0.004 0.007 14.40 0.000 3.2444 0.004 0.007 14.76 0.000 3.2889 0.004 0.007 15.12 0.000 I 3.3333 0.004 0.007 15.48 0.000 3.3778 0.004 0.007 15.84 0.000 3. 4222 0.004 0.008 16.21 0.000 I 3.4667 0.004 0.008 16.58 0.000 3.5111 0.004 0.008 16.96 0.000 3.5556 0.004 0.008 17.33 0.000 3.6000 0.004 0.008 17.71 0.000 I 3.6444 0.004 0.009 18.10 0.000 3.6889 0.004 0.009 18.48 0.000 3.7333 0.004 0.009 18.87 0.000 I I I I I I I I I I I I I I I I I I I I I -------------------------------------------, 3. 7778 0.004 0.009 19.26 3.8222 0.004 0.009 19.65 3.8667 0.004 0.010 20.05 3.9111 0.004 0.010 20.45 3.9556 0.004 0.010 20.85 4.0000 0.004 0.010 21.25 4.0444 0.004 0.011 21.66 Name IMP-14 Surface14 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer Material thickness of second layer : 0 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-14 Name DMA S Bypass: No GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-15 Surface15 Name IMP-15 OUtlet 2 Acres 0 Acres 0.0274 0.0274 0.0274 Interflow IMP-15 Surface15 Bottom Length: 131.50 ft. Bottom Width : 4.00 ft. Trench bottom slope 1: 0 To 1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 0 0 Groundwater I I I I I I I I I I I I I I I I I I I Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: OUtlet 1 Stage(ft) 0.0000 0.0444 0.0889 0.1333 0.1778 0.2222 0.2667 0.3111 0.3556 0.4000 0.4444 0.4889 0.5333 0.5778 0.6222 0.6667 0.7111 0.7556 0.8000 0.8444 0.8889 0.9333 0.9778 1.0222 1.0667 1.1111 1.1556 1.2000 1.2444 1.2889 1.3333 1.3778 1.4222 1.4667 1.5111 1. 555 6 Outlet 2 Flow Through Planter Box Hydraulic Table Area(ac) Voluma(ac-ft) Discharge(cfs) Infilt(cfs) 0.012 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.000 0.001 0.001 0.001 0.001 0.002 0.002 0.002 0.002 0.003 0.003 0.003 0.003 0.004 0.004 0.004 0.004 0.004 0.005 0.005 0.005 0.005 0.006 0.006 0.006 0.006 0.007 0.007 0.007 0.007 0.008 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 019 0.070 0.138 0.220 0.314 0.419 0.533 0.656 0.787 0. 92 6 1.072 1. 225 1. 384 1. 550 1. 723 1.901 2.085 2.274 2.469 2.669 2.875 3.085 3.300 3.520 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I 1.6000 0.012 0.008 3.745 0.000 ].6444 0.012 0.008 3.974 0.000 I 1.6889 0.012 0.008 4.208 0.000 ].7333 0.012 0.009 4.446 0.000 1. 7778 0.012 0.009 4.689 0.000 I ].8222 0.012 0.009 4.935 0.000 1.8667 0.012 0.009 5.186 0.000 ].9111 0.012 0.010 5.441 0.000 1.9556 0.012 0.010 5.700 0.000 I 2.0000 0.012 0.010 5. 963 0.000 2.0444 0.012 0.010 6.230 0.000 2.0889 0.012 0. 011 6.501 0.000 2.1333 0.012 0. 011 6.776 0.000 I 2.1778 0.012 0. 011 7.055 0.000 2.2222 0.012 0. 011 7.337 0.000 2. 2 667 0.012 0. 011 7. 623 0.000 I 2.3111 0.012 0.012 7.912 0.000 2.3556 0.012 0.012 8.205 0.000 2.4000 0.012 0.012 8.502 0.000 2.4444 0.012 0.012 8.802 0.000 I 2.4889 0.012 0.013 9.105 0.000 I 2.5333 0.012 0.013 9.412 0.000 2.5778 0.012 0.013 9.722 0.000 2.6222 0.012 0.013 10.03 0.000 I 2.6667 0.012 0.013 10.35 0.000 2.7111 0.012 0.014 10.67 0.000 2.7556 0.012 0.014 10.99 0.000 2.8000 0.012 0.014 11. 32 0.000 I 2.8444 0.012 0.014 11.65 0.000 2.8889 0.012 0.015 11.98 0.000 2.9333 0.012 0.015 12.32 0.000 I 2.9778 0.012 0.015 12.66 0.000 3.0222 0.012 0. 016 13.00 0.000 3.0667 0.012 0. 016 13.34 0.000 3.1111 0.012 0.017 13.69 0.000 I 3.1556 0.012 0.017 14.04 0.000 3.2000 0.012 0.018 14.40 0.000 3.2444 0.012 0.018 14.76 0.000 3.2889 0.012 0.019 15.12 0.000 I 3.3333 0.012 0. 019 15.48 0.000 3.3778 0.012 0.020 15.84 0.000 3.4222 0.012 0.020 16.21 0.000 3.4667 0.012 0.021 16.58 0.000 I 3.5111 0.012 0.021 16.96 0.000 3.5556 0.012 0.022 17.33 0.000 3.6000 0.012 0.022 17.71 0.000 I 3.6444 0.012 0.023 18.10 0.000 3.6889 0.012 0.024 18.48 0.000 3.7333 0.012 0.024 18.87 0.000 3.7778 0.012 0.025 19.26 0.000 I 3.8222 0.012 0.025 19.65 0.000 3.8667 0.012 0.026 20.05 0.000 3.9111 0.012 0. 026 20.45 0.000 3.9556 0.012 0.027 20.85 0.000 I 4.0000 0.012 0.027 21.25 0.000 4.0444 0.012 0.028 21.66 0.000 I I I I I I I I I I I I I I I I I I I I I Name IMP-15 Surface15 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 IMP-15 Name DMA T Bypass: No GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-16 Surface16 Name IMP-16 Outlet 2 Acres 0 Acres 0.0789 0.0789 0.0789 Inter£ low IMP-16 Surface16 Bottom Length: 75.00 ft. Bottom Width : 15.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Groundwater Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 I I Discharge Structure Riser Height: 0.5 ft. I Riser Diameter: 4 in. Element Flows To: I Outlet 1 Outlet 2 I Flow Through Planter Box Hydraulic Table Stage !ft! Area ~ac~ Volume {ac-ft~ Discharg:e{cfs! Infilt{cfs! I 0.0000 0.025 0.000 0.000 0.000 0.0444 0.025 0.000 0.000 0.000 0.0889 0.025 0.001 0.000 0.000 0.1333 0.025 0.001 0.000 0.000 I 0.1778 0.025 0.002 0.000 0.000 0.2222 0.025 0.002 0.000 0.000 0.2667 0.025 0.003 0.000 0.000 I 0.3111 0.025 0.003 0.000 0.000 0.3556 0.025 0.004 0.000 0.000 0.4000 0.025 0.004 0.000 0.000 0.4444 0.025 0.005 0.000 0.000 I 0.4889 0.025 0.005 0.000 0.000 0.5333 0.025 0.006 0.019 0.000 0.5778 0.025 0.006 0.070 0.000 0.6222 0.025 0.007 0.138 0.000 I 0.6667 0.025 0. 007 0.220 0.000 0. 7111 0.025 0.008 0. 314 0.000 0.7556 0.025 0.008 0.419 0.000 0.8000 0.025 0.009 0.533 0.000 I 0.8444 0.025 0.009 0.656 0.000 0.8889 0.025 0.010 0.787 0.000 0.9333 0.025 0.010 0. 92 6 0.000 I 0.9778 0.025 0. 011 1.072 0.000 1. 0222 0.025 0. 011 1. 225 0.000 1. 0667 0.025 0.012 1.384 0.000 1.1111 0.025 0.012 1. 550 0.000 I 1.1556 0.025 0.013 1. 723 0.000 1.2000 0.025 0.013 1. 901 0.000 1.2444 0.025 0.014 2.085 0.000 1.2889 0.025 0.014 2.274 0.000 I 1.3333 0.025 0.015 2.469 0.000 1.3778 0.025 0.015 2.669 0.000 1.4222 0.025 0.016 2.875 0.000 1.4667 0.025 0.016 3.085 0.000 I 1.5111 0.025 0.017 3.300 0.000 1. 555 6 0.025 0.017 3.520 0.000 1.6000 0.025 0.018 3.745 0.000 I 1.6444 0.025 0.018 3.974 0.000 1.6889 0.025 0.019 4.208 0.000 1.7333 0.025 0.019 4.446 0.000 1. 7778 0.025 0.020 4.689 0.000 I 1. 8222 0.025 0.020 4.935 0.000 1.8667 0.025 0.021 5.186 0.000 1.9111 0.025 0.021 5.441 0.000. I I I I 1.9556 0.025 0.022 5.700 0.000 2.0000 0.025 0.022 5.963 0.000 I 2.0444 0.025 0.023 6.230 0.000 2.0889 0.025 0.023 6.501 0.000 2.1333 0.025 0.023 6.776 0.000 I 2.1778 0.025 0.024 7.055 0.000 2.2222 0.025 0.024 7.337 0.000 2.2667 0.025 0.025 7.623 0.000 2. 3111 0.025 0.025 7.912 0.000 I 2.3556 0.025 0. 02 6 8.205 0.000 2.4000 0.025 0. 02 6 8.502 0.000 2.4444 0.025 0.027 8.802 0.000 2.4889 0.025 0. 027 9.105 0.000 I 2.5333 0.025 0.028 9.412 0.000 2.5778 0.025 0.028 9.722 0.000 2.6222 0.025 0.029 10.03 0.000 2.6667 0.025 0.029 10.35 0.000 I 2. 7111 0.025 0.030 10. 67 0.000 2.7556 0.025 0.030 10.99 0.000 2.8000 0.025 0.031 11.32 0.000 I 2.8444 0.025 0.031 11. 65 0.000 2.8889 0.025 0.032 11. 98 0.000 2.9333 0.025 0.032 12.32 0.000 2.9778 0.025 0.033 12.66 0.000 I 3.0222 0.025 0.034 13.00 0.000 3.0667 0.025 0.035 13.34 0.000 3.1111 0.025 0.036 13.69 0.000 3.1556 0.025 0.037 14.04 0.000 I 3.2000 0.025 0.038 14.40 0.000 3.2444 0.025 0.039 14.76 0.000 3.2889 0.025 0.041 15.12 0.000 I 3.3333 0.025 0.042 15.48 0.000 3.3778 0.025 0.043 15.84 0.000 3.4222 0.025 0.044 16.21 0.000 3.4667 0.025 0.045 16.58 0.000 I 3.5111 0.025 0. 04 6 16.96 0.000 3.5556 0.025 0.047 17.33 0.000 3.6000 0.025 0. 04 9 17.71 0.000 3.6444 0.025 0.050 18.10 0.000 I 3.6889 0.025 0.051 18.48 0.000 3.7333 0.025 0.052 18.87 0.000 3.7778 0.025 0.053 19.26 0.000 3.8222 0.025 0.054 19.65 0.000 I 3.8667 0.025 0.055 20.05 0.000 3.9111 0.025 0.057 20.45 0.000 3.9556 0.025 0.058 20.85 0.000 I 4.0000 0.025 0.059 21.25 0.000 4.0444 0.025 0.060 21.66 0.000 I Name IMP-16 Surface16 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 I Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 I I I I I I I I I I I I I I I I I I I I I Material thickness of third layer : 0 Pour Space of material for third layer Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-16 Name Bypass: No DMA U GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-17 Surface17 Name IMP-17 Outlet 2 Acres 0 Acres 0.0232 0.0232 0.0232 Interflow IMP-17 Surface17 Bottom Length: 40.00 ft. Bottom Width : 5.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench riqht side slope 2: 0 To 1 Material thickness of first layer : 2 0 Groundwater Pour Space of material for first layer 0.436 Material thickness of second layer : 1 Pour Space of material for second layer : 0.415 Material thickness of third layer : 0 Pour Space of material for third layer : 0.415 Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 Outlet 2 I I I Flow Through Planter Box Hydraulic Table Stag:e ~ftJ Area~acJ Volume ~ac-ftJ Discharg:e!cfsJ Infilt!cfs} I 0.0000 0.004 0.000 0.000 0.000 0.0444 0.004 0.000 0.000 0.000 0.0889 0.004 0.000 0.000 0.000 0.1333 0.004 0.000 0.000 0.000 I 0.1778 0.004 0.000 0.000 0.000 0.2222 0.004 0.000 0.000 0.000 0.2667 0.004 0.000 0.000 0.000 0.3111 0.004 0.000 0.000 0.000 I 0.3556 0.004 0.000 0.000 0.000 0.4000 0.004 0.000 0.000 0.000 0.4444 0.004 0.000 0.000 0.000 0.4889 0.004 0.001 0.000 0.000 I 0.5333 0.004 0.001 0.019 0.000 0.5778 0.004 0.001 0.070 0.000 0.6222 0.004 0.001 0.138 0.000 I 0.6667 0.004 0.001 0.220 0.000 0. 7111 0.004 0.001 0.314 0.000 0.7556 0.004 0.001 0.419 0.000 0.8000 0.004 0.001 0.533 0.000 I 0.8444 0.004 0.001 0.656 0.000 0.8889 0.004 0.001 0.787 0.000 0.9333 0.004 0.001 0. 926 0.000 0.9778 0.004 0.002 1. 072 0.000 I 1.0222 0.004 0.002 1.225 0.000 1.0667 0.004 0.002 1. 384 0.000 1.1111 0.004 0.002 1. 550 0.000 1.1556 0.004 0.002 1.723 0.000 I 1.2000 0.004 0.002 1.901 0.000 1.2444 0.004 0.002 2.085 0.000 1.2889 0.004 0.002 2.274 0.000 I 1.3333 0.004 0.002 2.469 0.000 1.3778 0.004 0.002 2.669 0.000 1.4222 0.004 0.002 2.875 0.000 1.4667 0.004 0.002 3.085 0.000 I 1.5111 0.004 0.003 3.300 0.000 1.5556 0.004 0.003 3.520 0.000 1.6000 0.004 0.003 3.745 0.000 1.6444 0.004 0.003 3.974 0.000 I 1.6889 0.004 0.003 4.208 0.000 1.7333 0.004 0.003 4.446 0.000 1. 7778 0.004 0.003 4.689 0.000 1.8222 0.004 0.003 4.935 0.000 I 1.8667 0.004 0.003 5.186 0.000 1.9111 0.004 0.003 5.441 0.000 1.9556 0.004 0.003 5.700 0.000 I 2.0000 0.004 0.004 5.963 0.000 2.0444 0.004 0.004 6.230 0.000 2.0889 0.004 0.004 6.501 0.000 2.1333 0.004 0.004 6.776 0.000 I 2.1778 0.004 0.004 7.055 0.000 2.2222 0.004 0.004 7.337 0.000 2.2667 0.004 0.004 7. 623 0.000 I I I I 2.3111 0.004 0.004 7.912 0.000 I 2.3556 0.004 0.004 8.205 0.000 2.4000 0.004 0.004 8.502 0.000 2.4444 0.004 0.004 8.802 0.000 2.4889 0.004 0.004 9.105 0.000 I 2.5333 0.004 0.005 9.412 0.000 2.5778 0.004 0.005 9.722 0.000 2. 6222 0.004 0.005 10.03 0.000 2.6667 0.004 0.005 10.35 0.000 I 2. 7111 0.004 0.005 10.67 0.000 2.7556 0.004 0.005 10.99 0.000 2.8000 0.004 0.005 11.32 0.000 2.8444 0.004 0.005 11.65 0.000 I 2.8889 0.004 0.005 11.98 0.000 2.9333 0.004 0.005 12.32 0.000 2.9778 0.004 0.005 12.66 0.000 I 3.0222 0.004 0.006 13.00 0.000 3.0667 0.004 0.006 13.34 0.000 3.1111 0.004 0.006 13.69 0.000 3.1556 0.004 0.006 14.04 0.000 I 3.2000 0.004 0.006 14.40 0.000 3.2444 0.004 0.007 14.76 0.000 3.2889 0.004 0.007 15.12 0.000 3.3333 0.004 0.007 15.48 0.000 I 3.3778 0.004 0.007 15.84 0.000 3.4222 0.004 0.007 16.21 0.000 3.4667 0.004 0.008 16.58 0.000 3.5111 0.004 0.008 16.96 0.000 I 3.5556 0.004 0.008 17.33 0.000 3.6000 0.004 0.008 17.71 0.000 3.6444 0.004 0.008 18.10 0.000 I 3.6889 0.004 0.009 18.48 0.000 3.7333 0.004 0.009 18.87 0.000 3.7778 0.004 0.009 19.26 0.000 3.8222 0.004 0.009 19.65 0.000 I 3.8667 0.004 0.009 20.05 0.000 3.9111 0.004 0.010 20.45 0.000 3.9556 0.004 0.010 20.85 0.000 4.0000 0.004 0.010 21.25 0.000 I 4.0444 0.004 0.010 21. 66 0.000 I Name IMP-17 Surface17 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. Material thickness of first layer : 0 I Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 I Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. I Element Flows To: Outlet 1 Outlet 2 I I I I I I I I I I I I I I I I I I I I I IMP-17 Name DMA W Bypass: Yes GroundWater: No Pervious Land Use D,Grass,FLAT(0-5%) Pervious Total Impervious Land Use IMPERVIOUS-FLAT Porous Pavement Impervious Total Basin Total Element Flows To: Surface Name DMA V Bypass: No GroundWater: No Pervious Land Use Pervious Total Impervious Land Use IMPERVIOUS-FLAT Impervious Total Basin Total Element Flows To: Surface IMP-18 Surface18 Name IMP-18 Acres .195 0.195 Acres 0.008 0.0201 0.0281 0.2231 Interflow Acres 0 Acres 0.0242 0.0242 0.0242 Interflow IMP-18 Surface18 Groundwater Groundwater I I I I I I I I I I I I I I I I I I I Bottom Length: 40.00 ft. Bottom Width : 5.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer : 2 Pour Space of material for first layer Material thickness of second layer : 1 Pour Space of material for second layer : Material thickness of third layer : 0 Pour Space of material for third layer : Discharge Structure Riser Height: 0.5 ft. Riser Diameter: 4 in. Element Flows To: Outlet 1 Outlet 2 0.436 0.415 0.415 Staqe(ft) Flow Through Planter Box Hydraulic Table Area(ac) Volume(ac-ft) Discharqe(cfs) Infilt(cfs) 0.0000 0.0444 0.0889 0.1333 0.1778 0.2222 0. 2 667 0.3111 0.3556 0.4000 0.4444 0.4889 0.5333 0.5778 0.6222 0.6667 0. 7111 0.7556 0.8000 0.8444 0.8889 0.9333 0.9778 1.0222 1. 0667 1.1111 1.1556 1.2000 1. 2444 1.2889 1.3333 1.3778 1.4222 0.004 0.000 0.000 0.000 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.019 0.070 0.138 0.220 0.314 0.419 0.533 0.656 0.787 0. 92 6 1.072 1. 225 1. 384 1. 550 1. 723 1.901 2.085 2.274 2.469 2.669 2.875 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I I 1.4667 0.004 0.002 3.085 0.000 1.5111 0.004 0.003 3.300 0.000 I 1.5556 0.004 0.003 3.520 0.000 1.6000 0.004 0.003 3.745 0.000 1.6444 0.004 0.003 3.974 0.000 I 1.6889 0.004 0.003 4.208 0.000 1. 7333 0.004 0.003 4.446 0.000 1.7778 0.004 0.003 4.689 0.000 1.8222 0.004 0.003 4.935 0.000 I 1.8667 0.004 0.003 5.186 0.000 1.9111 0.004 0.003 5.441 0.000 1. 955 6 0.004 0.003 5.700 0.000 2.0000 0.004 0.004 5.963 0.000 I 2.0444 0.004 0.004 6.230 0.000 2.0889 0.004 0.004 6.501 0.000 2.1333 0.004 0.004 6.776 0.000 I 2.1778 0.004 0.004 7.055 0.000 2.2222 0.004 0.004 7.337 0.000 2.2667 0.004 0.004 7. 623 0.000 2.3111 0.004 0.004 7.912 0.000 I 2.3556 0.004 0.004 8.205 0.000 2.4000 0.004 0.004 8.502 0.000 2.4444 0.004 0.004 8.802 0.000 2.4889 0.004 0.004 9.105 0.000 I 2.5333 0.004 0.005 9.412 0.000 2.5778 0.004 0.005 9. 722 0.000 2.6222 0.004 0.005 10.03 0.000 2.6667 0.004 0.005 10.35 0.000 I 2.7111 0.004 0.005 10.67 0.000 2.7556 0.004 0.005 10.99 0.000 2.8000 0.004 0.005 11.32 0.000 I 2.8444 0.004 0.005 11.65 0.000 2.8889 0.004 0.005 11.98 0.000 2.9333 0.004 0.005 12.32 0.000 2.9778 0.004 0.005 12.66 0.000 I 3.0222 0.004 0.006 13.00 0.000 3.0667 0.004 0.006 13.34 0.000 3.1111 0.004 0.006 13.69 0.000 3.1556 0.004 0.006 14.04 0.000 I 3.2000 0.004 0.006 14.40 0.000 3.2444 0.004 0.007 14.76 0.000 3.2889 0.004 0.007 15.12 0.000 3.3333 0.004 0.007 15.48 0.000 I 3.3778 0.004 0.007 15.84 0.000 3.4222 0.004 0.007 16.21 0.000 3.4667 0.004 0.008 16.58 0.000 I 3.5111 0.004 0.008 16.96 0.000 3.5556 0.004 0.008 17.33 0.000 3.6000 0.004 0.008 17.71 0.000 3.6444 0.004 0.008 18.10 0.000 I 3.6889 0.004 0.009 18.48 0.000 3.7333 0.004 0.009 18.87 0.000 3.7778 0.004 0.009 19.26 0.000 3.8222 0.004 0.009 19.65 0.000 I 3.8667 0.004 0.009 20.05 0.000 3.9111 0.004 0.010 20.45 0.000 3.9556 0.004 0.010 20.85 0.000 I I I I I I I I I I I I I I I I I I I I I 4.0000 4.0444 0.004 0.004 0.010 0.010 Name IMP-18 Surface18 Bottom Length: 0.00 ft. Bottom Width : 0.00 ft. 21.25 21.66 Material thickness of first layer : 0 Pour Space of material for first layer 0 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: OUtlet 1 IMP-18 OUtlet 2 ANALYSIS RESULTS Predeveloped Landuse Totals for POC #1 Total Pervious Area 2.156 Total Impervious Area : 0.944 Mitigated Landuse Totals for POC #1 Total Pervious Area 2.3653 Total Impervious Area : 6.546 0.000 0.000 Flow Frequency Return Return Period Periods for Flow(cfs) 0.613737 0. 943572 1.152347 1.368863 Predeveloped. POC #1 2 year 5 year 10 year 25 year Flow Frequency Return Return Period 2 year 5 year 10 year 25 year POC #1 Periods for Mitiqated. Flow(cfs) 0.187762 0.30397 0.390977 0.640869 POC Ill I I The Facility PASSED I The Facility PASSED. Flow (cfs) Predev Mit Percentage Pass/Fail I 0.0614 2266 2507 110 Pass 0. 0724 2047 2011 98 Pass 0.0834 1586 1643 103 Pass 0.0944 1312 1341 102 Pass I 0.1055 1019 1094 107 Pass 0.1165 887 860 96 Pass 0.1275 801 651 81 Pass 0.1385 731 479 65 Pass I 0.1495 668 339 50 Pass 0.1606 631 256 40 Pass 0.1716 556 165 29 Pass I 0.1826 468 100 21 Pass 0.1936 406 73 17 Pass 0.2046 367 50 13 Pass 0.2157 339 35 10 Pass I 0.2267 321 31 9 Pass 0.2377 293 26 8 Pass 0.2487 269 23 8 Pass 0.2597 244 21 8 Pass I 0.2708 223 20 8 Pass 0.2818 201 20 9 Pass 0.2928 186 18 9 Pass 0.3038 172 17 9 Pass I 0.3148 165 16 9 Pass 0.3259 160 16 10 Pass 0.3369 152 14 9 Pass I 0.3479 140 14 10 Pass 0.3589 134 12 8 Pass 0.3699 115 12 10 Pass 0.3810 109 12 11 Pass I 0.3920 101 7 6 Pass 0.4030 99 5 5 Pass 0.4140 93 5 5 Pass 0.4250 88 5 5 Pass I 0.4361 82 5 6 Pass 0.4471 79 5 6 Pass 0.4581 71 5 7 Pass 0.4691 68 5 7 Pass I 0.4801 62 4 6 Pass 0.4912 60 4 6 Pass 0.5022 59 4 6 Pass I 0. 5132 56 4 7 Pass 0.5242 50 3 6 Pass 0.5352 50 3 6 Pass 0.5463 41 3 7 Pass I 0.5573 38 3 7 Pass 0.5683 36 3 8 Pass 0.5793 36 3 8 Pass 0.5903 36 2 5 Pass I 0.6014 35 2 5 Pass 0.6124 33 2 6 Pass 0.6234 32 2 6 Pass I I I I 0.6344 31 2 6 Pass 0.6454 30 2 6 Pass I 0.6565 28 2 7 Pass 0.6675 26 2 7 Pass 0.6785 24 2 8 Pass I 0.6895 22 2 9 Pass 0.7005 22 2 9 Pass 0.7115 22 2 9 Pass 0. 7226 22 1 4 Pass I 0.7336 22 1 4 Pass 0.7446 22 1 4 Pass 0.7556 21 1 4 Pass 0.7666 20 0 0 Pass I 0.7777 19 0 0 Pass 0.7887 19 0 0 Pass 0. 7 997 19 0 0 Pass I 0.8107 19 0 0 Pass 0.8217 19 0 0 Pass 0.8328 19 0 0 Pass 0.8438 17 0 0 Pass I 0.8548 16 0 0 Pass 0.8658 16 0 0 Pass 0.8768 16 0 0 Pass 0.8879 13 0 0 Pass I 0.8989 11 0 0 Pass 0.9099 11 0 0 Pass 0.9209 10 0 0 Pass 0.9319 9 0 0 Pass I 0.9430 9 0 0 Pass 0.9540 9 0 0 Pass 0.9650 9 0 0 Pass I 0.9760 8 0 0 Pass 0.9870 8 0 0 Pass 0.9981 8 0 0 Pass 1.0091 8 0 0 Pass I 1.0201 8 0 0 Pass 1.0311 7 0 0 Pass 1.0421 7 0 0 Pass 1.0532 6 0 0 Pass I 1.0642 6 0 0 Pass 1.0752 6 0 0 Pass 1.0862 6 0 0 Pass 1.0972 5 0 0 Pass I 1.1083 5 0 0 Pass 1.1193 5 0 0 Pass 1.1303 5 0 0 Pass I 1.1413 5 0 0 Pass 1.1523 4 0 0 Pass I Drawdown Time Results I I I I I I I I I I I I I I I I I I I I I I Predeveloped Landuse Totals for POC #2 Total Pervious Area 0.278 Total Impervious Area : 0.443 Mitigated Landuse Totals for POC #2 Total Pervious Area 1.95 Total Impervious Area : 0.6683 Flow Frequency Return Periods for Predeveloped. POC #2 Return Period Flow!cfs) 2 year 0.262218 5 year 0.395776 10 year 0.460795 25 year 0.511626 Flow Frequency Return Periods for Mitigated. POC #2 Return Period Flow !cfs! 2 year 0.073918 5 year 0.116679 10 year 0.158911 25 year 0.222899 POC #2 The Facility PASSED The Facility PASSED. Flow (cfs) Predev Mit Percentage Pass/Fail 0.0262 2364 1551 65 Pass 0.0306 2200 1345 61 Pass 0.0350 1984 1073 54 Pass 0.0394 1555 897 57 Pass 0.0438 1316 744 56 Pass 0.0482 1056 498 47 Pass 0. 052 6 914 168 18 Pass 0.0569 829 102 12 Pass 0.0613 756 80 10 Pass 0.0657 716 65 9 Pass 0.0701 665 57 8 Pass 0.0745 634 46 7 Pass 0.0789 582 36 6 Pass 0.0833 510 30 5 Pass 0. 0877 433 26 6 Pass 0.0921 384 22 5 Pass 0.0965 347 20 5 Pass 0.1008 325 17 5 Pass 0.1052 299 17 5 Pass 0.1096 278 16 5 Pass 0.1140 257 15 5 Pass 0.1184 243 10 4 Pass 0.1228 218 10 4 Pass 0.1272 198 9 4 Pass I I 0.1316 185 8 4 Pass 0.1360 175 7 4 Pass I 0.1404 161 7 4 Pass 0.1447 153 7 4 Pass 0.1491 14 6 7 4 Pass I 0.1535 139 6 4 Pass 0.1579 133 6 4 Pass 0.1623 121 5 4 Pass 0.1667 116 4 3 Pass I 0.1711 100 4 4 Pass 0.1755 90 4 4 Pass 0.1799 83 3 3 Pass 0.1842 79 3 3 Pass I 0.1886 77 3 3 Pass 0.1930 71 3 4 Pass 0.1974 68 3 4 Pass 0.2018 67 3 4 Pass I 0.2062 61 3 4 Pass 0.2106 57 3 5 Pass 0.2150 53 3 5 Pass I 0.2194 50 3 6 Pass 0.2238 47 3 6 Pass 0.2281 43 3 6 Pass 0.2325 41 3 7 Pass I 0.2369 40 2 5 Pass 0.2413 37 2 5 Pass 0.2457 36 1 2 Pass 0.2501 34 1 2 Pass I 0.2545 31 1 3 Pass 0.2589 30 1 3 Pass 0.2633 28 1 3 Pass 0.2677 28 1 3 Pass I 0. 2720 28 1 3 Pass 0.2764 28 1 3 Pass 0.2808 27 1 3 Pass I 0.2852 27 1 3 Pass 0.2896 26 1 3 Pass 0.2940 26 1 3 Pass 0.2984 23 1 4 Pass I 0.3028 23 1 4 Pass 0. 3072 20 1 5 Pass 0.3115 19 1 5 Pass 0.3159 18 1 5 Pass I 0.3203 14 1 7 Pass 0.3247 14 1 7 Pass 0.3291 13 1 7 Pass I 0.3335 13 1 7 Pass 0.3379 13 1 7 Pass 0.3423 13 1 7 Pass 0.3467 13 1 7 Pass I 0.3511 13 1 7 Pass 0.3554 11 0 0 Pass 0.3598 11 0 0 Pass 0.3642 11 0 0 Pass I 0.3686 11 0 0 Pass 0.3730 10 0 0 Pass 0.3774 9 0 0 Pass I I I I I I I I I I I I I I I I I I I I I 0.3818 9 0 0 0.3862 9 0 0 0.3906 9 0 0 0.3950 9 0 0 0.3993 9 0 0 0.4037 9 0 0 0.4081 9 0 0 0.4125 9 0 0 0.4169 8 0 0 0.4213 8 0 0 0.4257 8 0 0 0.4301 8 0 0 0.4345 8 0 0 0.4388 8 0 0 0.4432 7 0 0 0.4476 6 0 0 0.4520 6 0 0 0.4564 5 0 0 0.4608 5 0 0 Drawdown Time Results Perlnd and Implnd Changes No changes have been made. Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass This program and accQmpanying documentation is provided 'as-is' without warranty of any kind. The entire risk regarding the p~rformance and results of this program is assumed by the user. Clear Creek Solutions, Inc. disclaims all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions, Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions, Inc. has been advised of the possibility of such damages. I I I I I I I BMP FACT SHEETS I I I I I I I I I I I I I I I I I I I I BIORETENTION I AREAS 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 I I I I SECTION 4 : LID DESIGN GUIDE B10rctcntion facility configun.xl for treatment-only rc<.Jllircmcnts. Biorctcntion facibocs can rcctan!,'llhr. linear, or nearly :In)' shape. Bioretention detains runoff in a surface reservoir, fi lters it through plant roots and a biologically active soil mix, and then infiltrates it into the ground. Where native soils are less permeable, an underdrain conveys treated runoff to storm drain or surface drainage. Bioretention facilities can be co nfigured in nearly any shape. \XIhen configured as linear swales, they can convey high flows while percolating and treating lower flows. Bioretention facilities can be configured as in-ground or above- ground planter boxes, with the bottom open to allow inftltration to native soils underneath. If infiltration cannot be allowed, use the sizing factors and criteria fur the Flow-Through Planter. IJo> CRITERIA For development projects subject only to runoff treatment reguirements, the following criteria apply: Parameter oil mix depth oil mix minimum percolation rate Soil mix surface area Criterion 18 inches minimum 5 inches per hour minimum sustained (10 inches per hour initial rate recommended) 0.04 times tributary impervious area (or eyuivalent) Best Uses • Commercial areas • Residential subdivisions • Industrial developments • Roadways • Parki ng lots • Fit in setbacks, med ians, and other landscaped areas Advantages • Can be any shape • Low maintenance • Can be landscaped Limitations • Require 4% of tributary impervious sguare footage • T ypically reguires 3-4 feet of head • Irrigation typically reguired 85 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I I I I I I I I I Parameter urface reservoir depth Underdrain • DETAILS SECTION 4: LID DESIGN GUIDE Criterion 6 mches minimum; may be sloped to 4 inches where adjoining walk-ways. Rt:tluirccl in Group "C" and "[)" soils. Perforated pipe embedded in gravel ("Class 2 permeable" rt:commended), connected to storm drain or other accepted discharge point. Plan. On the surface, a bioretention faciuty should be one level, shallow basi n--or a series of basins. As runoff enters each basin, it should flood and fill throughout before runoff overflows to the outlet or to the next downstream basin. This will help prevent movement of surface mulch and soil mix. L o;c check dam< fur lmcar bourctcnoun facilities (swalcs) on a sk>pc. In a linear swale, check dams should be placed so that the lip of each dam is at least as high as the toe of the next upstream dam. A imilar principle applies to biorctcntion facilities built as terraced roadway shoulders. Inlets. Paved areas draining to the facili ty should be graded, and inlets should be placed, so that runoff remains as sheet flow or as dispersed as possible. Curb cuts should be wide (12" is reco mmended) to avoid clogging with leaves or debris. Allow for a minimum reveal o f 4"-6" between the inlet and soil mix elevations to ensure turf or mulch buildup does not block the inlet. In addition, place an apron o f stone or concrete, a foot square or larger, inside each inlet to prevent vegetation from growing up and blocking th e inlet. 86 City of Carlsbad SUSMP-.January 14, 2011 I I I I I I I I I I I I I I I I I I I SECTION 4: LID DESIGN GUIDE Recommended~ dctuls fur boomcnoon faabty inlets (S<X text). Where runoff is collected in pipes or gutters and conveyed to the facility, protect the landscaping fro m high-velocity flows with energy-dissipating rocks. In larger installations, provide cobble- lined channels to better distribute flows throughout the facility. pturned pipe outlets can be used to di ssipate energy when runoff is piped from roofs and upgradient paved areas. Soil mix. The required soil mix is similar to a loamy sand. lt must maintain a mtntmum percolation rate of 5" per hour tluoughout the life of the facili ty, and it must be sui table for maintaining plant life. Typically, on-site soils will no t be suitable due to clay content. Storage and drainage layer. "Cla ss 2 permeable," Caltrans specification 68-1.025, is recommended. Open-graded crushed rock, washed, may be used, but requires 4"-6" washed pea gravel be substituted at the top of the crushed rock gravel layers. Do not use filter fabric to separate the soil mix from the gravel drainage layer or the gravel drainage layer from the native soil. 87 City of Carlsbad SUSMP-January 14,2011 I I I I I I I I I I I I I I I I I I I SECTION 4: LID DESIGN GUIDE Underdrains. No underdrain is required where native soils beneath the facili ty are Hydrologic oil Group A or B. For treatment-only facilities where native soils are Group C or D, a perforated pipe must be bedded in the gravel layer and must terminate at a storm drain or other approved clischarge point. Outlets. In treatment-only facilities, outlets must be set high enough to ensure the surface reservoir fills and the entire surface area of soil mix is flooded before the outlet elevation ts reached. In swales, this can be achieved with appropriately placed check dams. The o utlet should be designed to exclude floating mulch and debris. Vaults, utility boxes and light standards. It is best to locate utilities outside the bioretention facility-in adjacent walkways or in a separate area set aside fo r this purpose. lf utility structures are to be placed within the facili ty, the locations sho uld be anticipated and adjustments made to ensure the minimum bioretention surface area and volumes are achieved. Leaving the final locations to each individual utility can p roduce a haphazard, unaesthetic appearance and make the bioretention facility more difficult to maintain. Emergency overflow. The site grading (construction) plan shall include details that demonstrate the bioretention basin can handle larger (up to 1 00-year) storm events and address potential clogging of the overflow and route emergency overflows safely. Trees. Bioretention areas can accommodate small or large trees. There is no need to subtract the area taken up by roots from the effective area of the facility. Extensive tree roots maintain soil permeability and help retain runo ff. Normal maintenance of a bioretention facility should not affect tree lifespan. The bioretention facility can be integrated \\ith a tree pit of the required depth and filled with structural soil. If a root barrier is used, it can be located to allow tree roots to spread throughout the bioretention facility while protecting adjacent pavement. Locations and planting elevations should be selected to avoid blocking the facility's inlets and outlets. llKli'Ctcntion facilil)· confi)(Urcd as a tree \I -ell 'lne root hamer " opoonal 88 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I I I I I I I I I SECTION 4 : LID DESIGN GUIDE • APPLICATIONS Multi-purpose landscaped areas. Bioretention facilities are easily adapted to serve multiple purposes. The loamy sand soil mi.x will suppo rt turf o r a plant palette suitable to the location and a well-drained soil. Example landscape treatments: • Lawn with sloped transition to adjacent landscaping . • Swale in setback area • SwaJe in parking median • Lawn with hardscaped edge treatment • Decorative garden with formal or informal plantings • Traffic island with low-maintenance landscaping • Raised planter with seating • Bioretention on a terraced slope .. B10retenoon fadliry configured as a r=sed decorao,·e hwn ",th hardscapcd <~. B>orctcnuon facditY confow>rcd and planted"' a hwn/ plar arc:a. 89 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I I I I I I I I I SECTION 4: LID DE S IGN GUIDE Residential subdivisions. Some subdivisions are designed to drain roofs and driveways to the streets (in the conventional manner) and then drain the streets to bioretention areas, w1th one bioretention area for each 1 to 6 lots, depending on subdivision layout and topography. Bioretention areas may be placed on separate, jointly-owned parcel(s). (](](](] BK>n:tcntlOn faciliq rccci\'Ull; dram"!,>e from tnc.li\'idwllo!s :mJ the stn:ct 1n a residential subdmSJOn. Sloped sites. Bioretention facilities must be constructed as a basin, or series of basins, with the circumfe rence of each basin set level. Tt may be necessary to add curbs or low retaining walls. B10rerenoon faahry configured as a parking median. Nutc usc of bollard< m pbcc c ,f curbs, eliminating the need fnr curb cut'!. 90 City of Carlsbad SUSMP-January 14,2011 I I I I I I I I I I I I I I I I I I I SECTION 4: LID DESIGN GUIDE Design Checklist for Bloretention 0 Volume or depth of surface reservoir meets or exceeds minimum. 0 18" depth "loamy sand" soil mix with minimum long-term percolation rate of 5"/hout. 0 Area of soil mix meets or exceeds minimum. 0 Perforated pipe underdrain bedded in "Class 2 perm" with connection and sufficient head to storm drain or discharge point (except in "A" or "B" soils). 0 No filter fabric. 0 Underdrain has a clean-out port consisting of a vertical, rigid, non-perforated PVC p1pe, with a minimum diameter of 6 inches and a watertight cap. 0 Location and footprint of facility are shown on site plan and landscaping plan. 0 Bioretention area is designed as a basin 0evel edges) or a series of basins, and grading plan is consistent with these elevations. If facility is designed as a swale, check dams are set so the lip of each dam is at least as high as the toe of the next upstream dam. 0 Inlets are 12" wide, have 4"-6" reveal and an apron or other provision to prevent blockage when vegetation grows in, and energy dissipation as needed. 0 Overflow connected to a downstream storm drain or approved discharge point. 0 Emergency spillage will be safely conveyed overland. 0 Plantings are suitable to the climate and a well-drained soil. 0 Irrigation system with connection to water supply. 0 Vaults, utility boxes, and light standards are located outside the minimum soil mix surface area. 0 When excavating, avoid smearing of the soils on bottom and side slopes. Minimize compaction of native soils and "rip" soils if clayey and/ or compacted. Protect the area from construction site runoff. 91 City of Carlsbad SUSMP-.January 14, 2011 I I I I I I I I I I I ' ! ! • • I i i • , I I l • • • I I i • ' f I ! ! I I I I I NOTE BASIN OUTlET (SEE DETAIL) SECTION 4: LID DESIGN GUIDE PLAN VIEW NOT TO SrJ.I...E ®SECTION -~~ 1. SUitf,I,CE AREA UNIT DEmtNINED BY EXTENT OF SPECIFED PI.ANTlNG MIX, WHICH IS GOVERNED IJ'I' THE OUTL.rT SPill. ELEVATION. !'Oft REQUIRED SURFACE AREA REf'ER TO TliE FACTORS N<ID EQUA110NS IN Tl-£ STIJRioiWATER C.J GUIOE800K . 2. '12 S'TORAGE .-G'COMPUSt£D Wl111 INFLTRo\TION ARCHES, PERFtlRAlED PIPES. CLASS 2 PERM OR OTHER AT n£ OESICNERS DISCRETION • Bioretention Facility 92 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I l • I i ~ ! , I I l I I i ! j I l I I I I I SPECIFIED SOIL NOTE PERFORATED UN"""""'N 1 . ORIFICE PLATI ill F1.ANGE CON\IECTION TO CONCRETE Stw.l BE F1TTED WIJloi SECTION 4: LID DESIGN GUIDE =ALL PIPE (GEN. MOTE I) CLOSED t.IESH GRATE (GEN. NOTES 4 THRU 7) PlAN N.T.S. ORIFICE PLATE SEt DETAIL lHIS SHE£T (GEN. NOTE 3) SECTION N.T.S. ORifiCE PLATE: MIN SQIJNE DIMOI510N5 1 .0 fT GREATER THAN PIPE OIA. HOT -DIP G!'Lw.NIUD PLATE AflEft HOLES HAVE BEEN DRIU£D 30 DUROt.IET'ER NEOPRENE: AINC. FLOW CONTROL ORIFICE PlATE Bioretention Facility Outlet Detail-A 93 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I I I I I I I I I FLOW-THROUGH PLANTERS I I I I I I I I I I I I I ... I I I I I I SECTION 4 : LID DESIGN GUIDE Flow-through planters treat and detain runoff without aiJowing seepage into the underlying soil. They can be used next to buildings and on slopes where stability might be affected by adding soil moisture. Flow-through planters typically receive mnuff via downspouts leadjng from the roofs of adjacent bujlrungs. However, they can also be set in - ground and receive sheet flow from adjacent paved areas. Pollutants arc removed as runoff passes through the soil layer and is collected in an underlying layer of gravel or drrun rock. A perforated-pipe underdrain is typically connected to a sto rm drain or other discharge poi nt. An overflow inlet conveys flows which exceed the capacity of the planter. CRITERIA Best Uses • Management of roof runoff • Next to buiJdings • Dense urban areas • Where infiltration is not desired Advantages • Can be used next to structures • Versatil e • Can be any shape • Low maintenance Limitations • Can be used for flow-control only on sites with "C" and "D" soils • Requires underdrain • Requires 3-4 feet of head Treatment only. For development projects subject only to runoff treatment requirements, the fo llowing criteria apply: P arameter oil mix depth o1l m1x minimum percolation rare Criterion 18 mches minimum 5 inches per hour minimum sustained (I 0 Inches per hour initial rare recommended) 94 City of Carlsbad SUSMP-January 14,2011 I I I I I I I I I I I I I I I I I I I Parameter Soil mix surface area Surface reservoir depth Underdrain ~ DETAILS SECTION 4: LID DESIGN GUIDE Criterion 0.04 times tributary impervious area (or equivalent) 6" minimum; may be sloped to 4" where adjoining walkways. Typically used. Perforated pipe embedded in gravel ("Class 2 permeable" recommended), connected to storm drain or other accepted discharge point. Configuration. The planter must be level. To avoid standing water in the subsurface layer, set the perforated pipe underdrain and orifice as nearly flush with the planter bottom as possible. Inlets. Protect plantings from high-velocity flows by adding rocks or other energy-dissipating structures at downspouts and other inlets. Soil mix. The required soil mix is similar to a loamy sand. It must maintain a nurumum percolation rate of 5" per hour throughout the life of the facility, and it must be suitable for maintaining plant life. Typically, on-site soils will not be suitable due to clay content. Gravel storage and drainage layer. "Class 2 permeable," Caltrans specification 68-1.025, is recommended. Open-graded crushed rock, washed, may be used, but requires 4" -6" of washed pea gravel be substituted at the top of the crushed rock layer. Do not use filter fabric to separate the soil mix from the gravel drainage layer. Emergency overflow. The planter design and installation should anticipate extreme events and potential clogging of the overflow and route emergency overflows safely. APPLICATIONS Adjacent to buildings. Flow-through planters may be located adjacent to buildings, where the planter vegetation can soften the visual effect of the building wall. A setback with a raised planter box may be appropriate even in some neo-traditional pedestrian-oriented urban streetscapes. At plaza level. Flow-through planters have been successfully incorporated into podium-style developments, with the planters placed on the plaza level and receiving runoff from the tower roofs above. Runoff from the plaza level is typically managed separately by additional flow- through planters or bioretention facilities located at street level. Steep slopes. Flow-through planters provide a means to detain and treat runoff on slopes that cannot accept infiltration from a biorctention facility. The planter can be built into the slope similar to a retaining wall. The design should consider the need to access the planter for periodic 95 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I I I I I I I I I SECTION 4 : LID DESIGN GUIDE maintenance. Flows from the planter underdrain and overflow must be directed in accordance with local requirements. It is sometimes possible to disperse these flows to the downgradient hillside. Fluw-lluuugh planter on the plan b·cl of a pudoum-~tllc dcn:k>pmcm. 96 Flow-through planter builtmto a hollsode. Flows from the undenlr:un :uxl overflow must be directed 10 accordance u1th h ::U rc<JW«:mCnL•. City of Carlsbad SUSMP-January 14,2011 I I I I I I I I I I I I I I I I I I I SECTION 4: LID DESIGN GUIDE Design Checklist for Flow-through Planter 0 Reservoir depth is 4-6" minimum. 0 18" depth "loamy sand" soil mix with minimum long-term infiltration rate of 5"/hour. 0 Area of soil mix meets or exceeds minimum. 0 "Class 2 perm" drainage layer. 0 No ftlter fabric. 0 Perforated pipe underdrain with oudet located flush or nearly flush with planter bottom. Connection with sufficient head to storm drain or discharge point. 0 Underdrain has a clean-out port consisting of a vertical, rigid, non-perforated PVC pipe, with a minimum diameter of 6 inches and a watertight cap. 0 Overflow connected to a downstream storm drain or approved discharge point. 0 Location and footprint of facility are shown on site plan and landscaping plan. 0 Planter is set level. 0 Emergency spillage will be safely conveyed overland. 0 Plantings are suitable to the climate and a well-drained soil. 0 Irrigation system with connection to water supply. 97 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I I I I I I I I I • ! ! ! ~ ' } ! ' ' SECTION 4: LID DESIGN GUIDE f-------L {VARIES) -------1 PLAN -.rr:s. SECTION NOTES: N.T.S. I. FUIW-THROUGH PLANTER SHAU. BE SIZED TO MEET CCCWP CRIT!RIA FOR Tft£ATVENT AND/OR F1..0W CONTROL. 2. MINIWUM SURfACE MFA OF PlANTER IS 4-W: Of' TRIBUTARI' IWPER't10US M£Jo fOR TRE'ANOO ON..Y OESIGH. fOR flOW CONTftOL MD ntEAT\lENT, REfER TO CCCWP SIZING TOOl CAftE~ 3. SIW'E OF PLAHTER CAN VIRr TO liiEET PROJECT DESIGN REQUIREMENTS NfJ LOCATlON. 4-. CLASS 2 PERWEAB..£ MATERIAL 5. DOWNSPOUTS/INLET PIPES RECIURE ENERGY DISSIPATION. 8. USE COUNTY API"ACCVED A001T111[ t.IXTUR£ FOR WAT'E:RPROOF'INO CONe~ 7. Pl..ANTlNGS: SEE CCCWP RECOMIIENDEO PtAHT UST NIID GUIDEUNES. 8. PLANTER DESIGN MAY REOURE STRUClURAL ENGINEERING DESIGN. 9. MEA • W x l (ABOVE). EXCl.l.JDei AREA OF VAULT Flow-Through Planter Detail A 98 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I I I I l I l I I ~ I I I i ! } I I i I I I I STEEl. VAULT FP.ANE (NOT£ 1 CIRCULAA ORFlCE DRII...lLD INTO GALVANIZED STEn.. "'"" -----, f!OlT """"' TO VAULT ClOSED MESH GRATE (GDI. NOTES 2 TlflU :1) LOCI(E:D, RfMOVAB_f CLOSE-MESH GRATE, Sl..Of'ED INSTALLAOOH SECTION N.T.S. GENERAL OUTLET DETAIL NOTES: 1. OUTFALL PI'E SHW. BE SIZED TO ~ DESICN S'TCJRW P£R CCCM> D£SICN CRITERIA. SECTION 4: LID DESIGN GUIDE PLAN N.T.S. '" ''" WAU. NOTES: 1. HOT -DIP GALVANIZE ENTIRE F1WoiE ASSEMBLY AFTER FABRICATION AND AFTER HOLES 1W1E BEEN ORI..LEO. 2. FOR WATERnGHT CONNECTlOH, MTAI.L i" TO i" THIO< X 2" WIDE CONTINUOUS ::10 OOitOto!EIDt NEOP!tfJriE GASKET, ALL AI'OUNO VAULT nw.IE. 2. GAATE SHALL BE MOUNTED USING STAI"l.ESS STEEl IMOWAA£ AND f'AOII'IOEO WITH HNCED AND I..OO<AEil..£ OR BOLTABL£ IICCES'S PANELS. J. GRATE SIW.L 8E STAIN..ESS STm., AI..UMINUW OR STEEL SlEEL GRATES SHALL BE HOT OIP GALVANIZED AND MAY BE HOT PCMtlER PAirll'U) AF1ER CALVNtllNC. -4. GRA.TI SHAlL BE ~ED SUO! l*T Tl£ DIAGONAL OlloiENSION Of EACH OPENING IS SWUER ~ THE DW.1ETER OF THE OUT1..£T PIP£. 5. S1lWCTURAL DESIGN OF GRATE 51-W.L BE BASED ON F1.11.L HYDROSTATIC HEAD WITH ZERO HEAO DOWNSTREAM OF GRATE. Flow-Through Planter Outlet Detail 99 City of Carlsbad SUSMP-January 14, 2011 I I I I I I I I GRASSPAVE2 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 I I I I I 2 Introduction History of Porous Paving Pebbles, cobblestones, and wood decking structures have been used since the dawn of civilization to reinforce where we walk and the roads we use. Little did we realize that these methods had benefits over the modern trends of sealing up the ground with asphalt and concrete. Porous, permeable or pervious paving-whatever you prefer-became a method for addressing stormwater issues in the early 20th century. Concrete turfblock waters such as streams, reservoirs, and lakes-our drinking water. This runoff also harms vegetation and wildlife with increased water volumes, velocities, and higher temperatures. The Grasspave2 and Gravelpave2 systems protect against this dangerous runoiT by processing and cleaning the water, thus safeguarding the natural water cycle. State of the Earth Invisible Structures, Inc. has developed an entire line of products to address stormwater and environmental concerns. Rainstore3, Slopetame2, Draincore2, and Beachrings2 can work in addition to, or in conjunction with, Grasspave2 and Gravelpave2 to provide your site, home, or office with stormwater and environmental enhance- ments. Our products can store and collect rain, provide erosion and sediment control, efficiently convey and deliver water, and protect natural areas. Advanced Technology for grass paving began in the mid-1940s and plastic versions were invented in the late '70s and early '80s. Great advance- ments have occurred in pervious concrete, pervious asphalt, and other permeable sur- faces. We introduced Grasspave2 in 1982, improving upon these earlier concepts. In 1993, Gravelpave2 was unveiled, the only product specifically developed for gravel porous paving. Fast forward to this millen- nium, and Grasspave2 and Gravelpave2 are considered by most, the finest porous pavers developed. Infiltration Porous paving allows rainwater to percolate The Grasspave2 and Gravelpave2 systems are based on a simple, but impressive technology-a series of rings (cylinders) connected on a flexible grid system. The Grasspavellarge rolls and Gravelpavellarge rolls (not shown) installquicklyandconform to the contours of the ground. cylinders are engineered to withstand significant structural loads and the grid provides stability, flexibility. and continuity for large areas. The grid system also has the unique ability to be rolled up for easy shipping, handling and installation. through the pavement's surface and back into the ground (infiltrating), where the water is cleaned and returned to ground water supplies. Porous paving improves upon impermeable sur- faces, such as concrete or asphalt, which do not allow for this natural filtration. Rain collects airborne and surface pollutants such as sediment, brake dust, chemicals, vehicle exhaust, oil, salts, fertilizers, bacteria, and animal waste. On impermeable surfaces the polluted rainwater runoiT (non-point source pollu- tion) is collected, concentrated, and discharged to downstream This engineered design allows for any street-legal vehicle (and sometimes larger) to park or drive on our Grasspave2 or Gravelpave2 surfaces. The point load pressure is transferred from the top of the ring, through the fill material and cylinders, to the engineered base course. .; •. 1.-\'!' .. I • Wallace Residence, Savannah. creates a wheelchair-accessible surface by stabilizing gravel and supporting tire pressure. Cover photo: Westin Klerland Resort and Spa, Scottsdale, Arizona-Grasspavel fire lane and Gravelpavel fire lane (concrete widening). -------------------------------------------------------------------------------------------------------- I I I I I I I I I I I I I I I I I I I 4 The ring and grid structure is 92 percent void space allowing for the healthiest root zone for grass (in Grasspave2) and more deco- rative gravel (in Gravelpave2) for some of the most attractive paved surfaces around. Less plastic means more natural looking surfaces. This technology also makes for better runoff coefficients and better percolation rates. 120 psi Maximum on Public Highways! Even empty, Grasspave2 and Gravelpave2 will support 2, I 00 psi (14,470 kPa)-well over the 120 psi highest truck tire pressure allowed on public highways. This is a safety factor of 17 times. When Grasspave2 is filled with sand for part of the root zone medium, the strength increases to 5, 700 psi (39,273 kPa). The safety factor increases from 17 to 4 7 times. The heavier a vehicle, the more axles and tires it needs to support the load being carried. Grasspave2 and Gravelpave2 wiU meet and exceed all loading criteria. Vehicle Loading Examples: under all conditions. It's also a good design practice to strengthen concrete sidewalks and curbing that will be mounted by fire trucks. CSI3212 43 Flexible Porous Pavers In 1997 The Construction Specifiers Institute (CSO came out with a generalized listing (02795) for all porous paving products. However, since performance and application is varied even in the porous paving industry, the 2004 CSI MasterFormatTM has adopt- ed a new number 32 12 43 Flexible Porous Paving, to recognize that Grasspave2 and Gravelpave2 are in a class by themselves. Best Management Practice Porous paving is recognized as a Best Management Practice (BMP) by the Environmental Protection Agency, the Center for Watershed Protection, the U.S. Army Corp of Engineers, and countless other feder- al, state, regional and local authori- ties. In addition, Grasspave2 and Gravelpave2 are often mentioned by name, as the product of choice for many of these agencies. Applications Auto tires: 40 psi Truck tires: 110 psi DC-1 0 tires: 250 psi F -16 tires: 350 psi Fire truck with outriggers: 78psi (An 85,000 lb. truck distributed to The University of South Alabama, Mobile used Gravelpave2 in parking aisles and Grasspave2 in the spaces. Stormwater Management The Grasspave2 and Gravelpave2 systems can easily handle storm four outrigger pads is equal to 21,250 lbs. for each outrigger pad with 12' x 18' surface contact with Grasspave2.) All these vehicles are well within our 5, 700 psi loading capability. With a sturdy base course design, our rings will easily perform water from an intense storm dropping three inches of rain in less than thirty minutes! In one square meter (40" X 40") there are 144 rings, two inches in diameter by one inch high. With one inch of fill in the rings and a standard road base of sandy gravel six I I I I I I I I I I I I I I I I I I I 6 inches thick, our porous systems will percolate approximately 'It inch of rain per houri A seven-inch section can store 2.4 inches of water (about 20 percent void after compaction). Alternatively, hard surfaces, such as asphalt and concrete, shed 95 percent of storm water. Aesthetics As a designer, engineer, contractor, or homeowner, you can be sure Grasspave2 and Gravelpave2 can deliver a more beautiful surface and add a unique look to a site. Grass simply looks better than asphalt and decorative gravel has been used for centuries in landscaping. Space constraints can be dealt with by combining the beauty of grass or gravel with the utility of paving. Trees and other vegetation not only survive, they thrive with Grasspave2 and Gravelpave2. Porous paving has the ability to deliver water, oxygen and carbon dioxide through the cross sec- lion-all essential to root survival. Concrete and asphalt suffo- cate and starve the root zones of water and air. With Grasspave2 and Gravelpave2, you can now design in as many trees and plants as your site will allow. Grasspave2 and Gravelpave2 prevent com- paction while allowing for ample amounts of water and air. Cars can then drive and park below tree canopies. Saving existing, mature trees is also possible with our products-Qur structures can come within inches of the mature tree trunk without damage. Our mats have the ability to flex with the tree root growth that would otherwise damage and crack hard surfaces. Environmental Benefits Grasspave2 and Gravelpavc2 not only protect the environment, they enhance it. All of our products arc made from 100 percent recycled plastic-plastic that goes into improving the environ- ment and not into a landfill. Through bioremediation, porous pavers have the ability to clean pollutants (heavy metals, 96-99 percent; suspended solids, 95 percent; phosphorous, 65 percent; nitrogen, 82 percent, hydrocarbons, up to 100 percent) out of stormwater. Our products also reduce erosion and soil migration, reduce site disturbance, and contribute to airborne dust capture and retention. Cooling the atmosphere and reducing the "urban heat island effect" (cities being up to 10 degrees hotter than undeveloped land) are added benefits of Grasspave2 and Gravelpave2. Both products can mitigate these increased temperatures. In addition, Grasspave2 promotes the conversion of carbon dioxide (green- house gas) into oxygen and has an "air-conditioning effect: Driveways Environmental, economic, and aesthetic enhancements are drawing homeowners and designers to use Grasspave2 and Gravelpave2 in driveways. Most residential driveways are good candidates for our porous duo because of the reduced speed and limited frequency of traffic. Our products can add beauty to residential and commercial driveways. Parking lots Parking for churches and synagogues, stadiums, arenas, and overflow at shopping centers, campuses, parks and more are ideal for Grasspave2 and Gravelpave2. These sites generally support large numbers of vehicles but only on periodic basis. Stormwater management and green space can be combined with parking, reducing maintenance, real estate, and development costs. A great design idea is combining durable Gravelpave2 drive aisles with attractive Grasspave2 parking bays. Pedestrian, Horse Trails and Bicycle Paths Garden paths, greenhouse aisles, sidewalks, park paths, and wilderness trails paved with Grasspave2/Gravelpave2 provide a stable surface for strollers, bicycles, wheelchairs, and horses. There are no puddles or mud and traction is very good. Tree roots break up hard surface sidewalks, but our mats flex to accommodate such shifts and gradient changes. Plus, with the high proportion of air, roots arc discouraged from moving upward. Mountain bikers will not be able to tear up paths reinforced with Grasspave2/Gravelpave2. Our products can resist the destructive forces of mountain bikes, allowing your trails to be reopened to bikes. Fire lanes By far, the most common application for Grasspave2 and Gravelpavc2 installations is for fire lanes. Our long and established history of providing safe, well- constructed fire lanes began in 1982 with our first installa- tion in Snowmass, Colorado, near Aspen Ski Resort. Since then, we have firmly established credibility for this application. Tests have been conducted by several fire departments in Aurora, Colorado and Irvine, California. Nearly every major U.S. metropolitan area has accepted and used Grasspave2 in a fire lane. You will most likely find a fire lane installation 1 r in your area. I I I I I I I I I I I I I I I I I I I 8 Grasspave2 Installation-Mats can be rolled out in minutes! 600m2 (6,000 sO per two-person hour! For steps shown below-100m2 (1,080 sO per two-person hour! Fill rings with clean sharp concrete sand. Use a regular lawn mower for maintenance. Do not aerate! TheGrasspave2 porous pavement system is comprised of a sandy gravel base course, Hydrogrow polymer-fertilizer mixture, the Grasspave2 ring and grid strocture, sharp concrete sand, and grass seed or sod. I I I I I I Grasspave21nstallation Procedures This installation section is only intended as an overview. Please review our Grasspave2 Technical Specifications (available at www.invisiblestructures.com or callB00-233-1510) for comprehensive installation instructions. Excavate a space for the base course as determined by site soils and loading requirements. Place and compact sandy gravel which should be a mixture of clean sharp sand and gravel varying in size but not exceeding 314 of an inch. To check porosity, use a hose to see that water flows into the base and drains away. Add subsurface drainage as necessary to low spots or locations with poor draining soils. Install irrigation lines and sprinkler heads if necessary. Apply the Hydrogrow mixture that is included free with your order. Hydrogrow is a mix- ture of polymer and fertilizer designed especially for our Grasspave2 system. Roll out Grasspave2, aligning the side hole fasteners over the side pegs. The warmth of the sun will relax the plastic so it lays flat. Cut the grid between rings using pruning shears. Incorporate the cut pieces in other areas, as needed, keeping the distance between the rings uniform. 9 Fill rings with clean sharp concrete sand (AASHTO M6 or ASTM C-33) using large rakes and brooms so that the tops of the rings show when done. Lay turf over the rings. On warm days, wet the sand first to lower sand temperature and provide moisture for grass roots. Seeding and hydromulching is also an accepted vegetating method at this stage. Repeated hydromulching/seeding may be necessary. Roll sod with heavy roller to eliminate air pockets and make sure roots are in contact with the sand fill. Water lawn as usual according to climatic requirements. Whether the area has been seeded or sodded, wait to drive on grass until two mowings have been completed, by which time the root system will be established and the sod pieces locked into place. In an emergency such as the need for fire truck access, grass may be driven on immediately after installation. Use a regular lawn mower for maintenance. There should be no paver parts protruding through the surface that would damage mowers. Do not aerate! I I I I I I I I I I I I I I I I I I I 10 Place and compact sand and gravel road base. Roll out Gravelpavel, aligning the snap fit fasteners. Seale mats with anchors provided (size and type may vary) Ccmpact gravel with vibfatorrolleror nat plate compactor (not shown). Gravelpave2 lnstallation- Gravelpave2 Size/Shape Fill Requirements You will need t• of gravel fill, compacted. Be careful to order enough for the compaction process and choose a gravel size that will nest well into the rings. We have found that 1/1,• minus crushed stone and sometime 1/," with limited small sharp screenings (#40 to #100 screen) works well. Washed gravel will roll within the rings and will also "roll about." For this reason, we do not recommend pea gravel, even though it is often very attractive. A visit to your local quarry is suggested. We have found that some geological areas of the United States have limited types of sharp gravel available. It has been necessary to import gravel from a neighboring state, but remember the amounts are relatively small- the top one-and-a-quarter inch of the cross sec- tion. Gravel should be as free of fines as possible. To maintain porosity, avoid soft stone materials with low durability that will break easily. Other Fill Materials for Gravelpave2 Please ask our staff for assistance with this category since it is use-specific and often experi- mental. Ground rubber, crushed glass, crushed brick, and many other materials can be useful as attractive fill materials for various applications. Thermoset (epoxy, polyurethane, etc.) binders may be cost prohibitive for most projects, but offer unique design possibilities, including clarity, color enhancement (wet look), flexibility, and durability. Our technical support staff will assist with selection of gravel sources. The photographic samples shown on this page will help you narrow your gravel choices. Should you have questions concerning the selection, please submit a small sample for app roval prior to specifying or securing the materials. I I I I I I I I I I I I I Mats can be rolled out in minutes! Gravelpave2 Installation Procedure This installation section is only intended as an overview. Please review our Gravelpave2 Technical Specifications (available at www.invisiblestructures.com or call 800-233-151 0) for comprehensive installation instructions. Prepare sandy gravel base course to a depth as determined by a soils engineer. Compact with a vibrating plate compactor or use a heavy motorized roller for large jobs. To test porosity, water with a hose and check to see that water drains readily through the base course before installing the Gravelpave2 mats. Roll out mats with the grain (in the same direction) so that the snap fit fasteners can be used with neighboring mats. To fit around boxes and curbs, cut the grid between the rings with pruning shears and scissors or a small portable electric hand saw. Fasten the mats together using the snap fit fasteners that are molded into the product inserting the prongs into the rectangular openings. Tuck the fabric underneath the fasteners to keep joints closed. A quarter-inch nut driver head (6 mm) fits nicely over the fastener to compress the pieces together. A piece of lumber placed under the Gravelpave2 mat will provide stability to aid in fastening. Supplied anchors must be used to secure the mats to the base. Hammer anchors with washers at a rate of one anchor per six rings in both directions. Use extra anchors around the perimeter of the Gravelpave2 install and in high traffic areas. Reciprocating hammers can be used to speed up the anchoring process. Anchors should be placed inside the rings as close to the center as possible. Begin anchoring from one corner in a radial pattern. 11 Gradually place gravel fill (see suggested fill material on facing page) into rings by using a front-end loader and shaking out the fill as the machine drives forward. Carefully lower the bucket when empty and back up while dragging it above the rings to smooth out the gravel, finishing with a stiff broom. Wheel barrow and shovel works well for small jobs. Contractor tip-you can store excess material for future maintenance, top dressing as may be necessary. Use rakes and/or push brooms to distribute the gravel fill to a level slightly above rings so that compacting the fill will not uncover the rings. Use a vibrating plate compactor or large driving roller again to compact the gravel fill. Additional gravel may be necessary to finish filling the rings. Compact again until the material appears solid in the rings. Wetting the gravel may help it to interlock. Drive on the installation when finished. If car tires make a pattern, there may be too much gravel or it may need additional compaction. It is expected that tops of the rings may be visible. If sides of the rings show, then add more fill material and repeat the compaction process. I I I I I I I I I I I I I I I I I I I 72 Golf Industry Gravelpave2 and Grasspave2 golf cart paths give the look of a natural path through trees, along fairways, and around greens. The flush surface requires no trimming or edging. Traction is excellent with Gravelpave2 and Grasspave2 traction is slightly better than grass. Grasspave2 Large Rolls Our patented systems have a shipping, handling and installation advantage as well-large rolls. Our standard roll size (model 2020) covers 431 sq. ft. (40m2) and weighs 192 pounds (87 kg). Other roll sizes are available. Installers of our products have repeatedly commented that they and Gravelpave2 can enhance your golf cart staging area, pedestrian traffic area, parking lot, road shoulder, and mainte- nance yard. Lab Compression Test Results Load-bearing capacity of filled Grasspave2/Gravelpave2 rings vs. concrete, and vehicle loading examples enjoy the easy installation. Rolling out Grasspave2 is similar to rolling out carpeting and coverage is fast and effi- cient. The mat system can be easily cut to fit around trees, irrigation, curbing, or other terrain. The rolls have snap-fit connectors to attach to adjacent rolls, making one unified, con- tiguous system. This unified Automobile Dealership Displays Car dealerships have discovered that Grasspave2 and Gravelpave2 are perfect for automobile dis- play areas. Dealerships now have an option when it comes to adding paved areas for car transport and display. Dealerships like the "soft" attractive look grass and decorative gravel provide. Utility and Maintenance Vehicle Access Providing your site with impor- tant utilitarian functions with- out compromising beauty Grasspave2/Grave/pave- 5, 720 psi capacity (fiJ/ed) Concre/e-3,000 psi capacity mat system adds stability and continuity in design. Grasspave2 can just as easily be snapped to Gravelpave2 to add stability and product variation. Hydrogrow Another reason Grasspave2 is simple. Grasspave2 and Gravelpave2 can incorporate a structural road without inter- rupting your landscaping. No obtrusive concrete or asphalt access roads are necessary to 100% Runoff Comparison Chart Runoff coefficients, Grasspave2/Gravelpave2 and sandy gravel base over various soil types is the industry leader is the addition of Hydrogrow soil amendment, which is supplied with your order. Hydrogrow is engineered to help grass grow in our sand based root zone. The results are amazing and our Grasspave2 areas often get to window washing areas, pump stations, microwave tow- ers, tanks, or electrical boxes. Unique Applications Our mats are installed in some unique and interesting places: 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 1 2 3 4 5 6 7 8 9 10 11 12 look healthier than surrounding turf. By using this special mix- ture in the sand, porosity will be maintained, turf will be attractive, and aeration will not be necessary. Sand Fill Helicopter landing pads, race car display areas, outdoor amphithe- ater seating, under picnic tables, under concrete pavers (support), airplane display and transport, cemetery marker reinforcement, eave drip lines and more. Installations are not limited Inches of Rain During 24 Hours Grasspave2 is the only grass paver on the market specifying sand as part of its cross section. Sand is the best medium to pro- vide water and air to the roots and still provide high compres- sive strength. The United States Golf Association uses sand for to traditional paved areas. Calculations Include GP'IGV'pla<ed over b" or sandy gravel base course, laid ov.r native soils Indicated. Grasspave2 Characteristics Ring and Grid Structure Grasspave2 is by most accounts the best flexible grass paver made today. Its unique ring and grid structure allow for flexibility, stability, and exceptional grass growth. With 92 percent void space for healthy roots and 100 percent grass coverage, Grasspave2 is the industry's preeminent choice. Our installations are hard to find because they are invisible! With so little plastic near the crown of the grass, the blades of grass are not smashed by prod- uct. Root development is not interrupted from spreading laterally. The rings arc strong and rigid, keeping grass root systems pro- tected from harm. The roots grow directly downward, deep into the sandy gravel base course. every USGA golf course and nearly every professional and colle- giate turf athletic field uses a sand cross section as well. Topsoil (or other organics fill material) in the rings will eventually compact and damage the root zone. Sand negates the need for mechanical aeration, which can damage Grasspave2 and other grass pavers. Strength When Installed When installed over a thick base course and compacted to 95 percent modified Proctor, sand-filled rings can support 5, 700 pounds per square inch (psi) without deflection or compromise to safety. The cylinder is the strongest shape to support compressive loads because it has no corners. Supporting heavy loads with the rings allows us to use less plastic in the product creating a 92 percent void area for root development, combined with strength! Less plastic means a lower cost for you. I I I I I I I I I I I I I I I I I I I 14 Traffic Frequency Grass as a surface material can withstand from two to six (varies with grass species and environmental conditions) trips daily over the same spot. This suggests that most parking applications we pave with asphalt today could be paved with Grasspave2 instead. Vehicles can remain parked on grass for extended periods of time, provided some relief can be given for a few days for the grass to recover. Lifespan Grasspave2 has a projected lifespan of 60 years. Compared to asphalt with a lifespan of 15 years; and concrete Should the fasteners of one mat not align over the distance of another mat, then anchor pins (or eight inch ring shank nails and large washers) can be used to secure the mats along the seam. Forcing the alignment can cause the mats to ripple and not lay down evenly. Traffic Frequency Gravelpave2 has no limits on frequency or duration of traffic on the system. Park or drive as often as you like on Gravelpave2. However, speeds should be kept at or below about 20 mph (30 kmlh). Durability Grasspave2 and Gravelpave2 are made from flexible High Density with a lifespan of 25 years, Grasspave2 will save you money on replacement costs. Irrigation Grass needs water and you may need to have irrigation Polyethylene (HOPE) plastic !~~~~~~~~~~~~~~,~with UV inhibitors, which withstands repeated freeze-thaw cycles and continuous subzero tem- peratures without crack- ing. HOPE resists aggres- sive chemicals such as road salts, motor oils and fuels. HOPE Standard colors include: installed. Grasspave2 has a sand based root zone which usually requires slightly more water than a normal topsoil or organic root zone. If golf courses in your area use irrigation Tan, Black, Pewter Grey. Terra Cotta. is highly abrasion-resistant and is unaffected by extremes in pH. A well- maintained Gravelpave2 installation will last 25 years in most climates. Aesthetics systems, you probably should in your Grassapave2 installation. Gravelpave2 Characteristics Fabric, Ring and Grid Invisible Structures-Standard Product Roll Sizes Part of what draws many designers to use Gravelpave2 is the ability to have an area maintain a natural look. Many times native soils or gravel can be used as fill material, comple- menting surrounding areas. When we developed Gravelpave2 in 1993, our Model 1010 1020 1520 2020 2520 m 1.5 2 2.5 ft m ft 3.3 10 32.8 3.3 20 65.6 4.9 20 65.6 6.6 20 65.6 8.2 20 65.6 m ft 0.5 1.7 0.8 2.7 0.8 2.7 0.8 2.7 0.8 2.7 10 108 20 215 30 323 40 430 50 538 kg lbs 22 48 44 96 65 144 87 192 109 240 Gravelpave2 is available in four standard colors-black, tan, gray, and terra cotta (custom colors are available at addition- al cost). Ring colors are intend- ed to blend with the gravel goal was to provide designers a second option for a porous pavement that can tolerate high frequency and low-speed traffic. By molding our ring and grid structure onto a non- woven polyester filter fabric, we were able to create a new product that contains gravel Rolls can be Installed manually (Z people advised). Rolls apply to Grasspave'. Gravelpave'. Dralncwe'. and Slopetame'. color so they will be less visible should some portion of the rings and prevents particle migration and rutting. Gravelpave2 is the only system specifically designed for aggregate containment porous paving. The cylinders displace the load onto an engineered base course and hold the decorative gravel in place. The fabric keeps the top-dress gravel from compacting into the road base, acts as a weed and vegetation barrier, and suppresses dust. Traditional pavements, including gravel roads, are designed to shed water and keep it away from the pavement's cross-section. Gravelpave2 is designed to do the opposite-welcoming water down through the system. Plus, Gravelpave2 will not rut, wash- board, or puddle like traditional gravel roads. Snap-Fit Fasteners Designed into Grave lpave2 is a snap-fit fastener, a two-pronged arrow that fits into a rectangular slot. Simply push the slot over the prongs to easily snap together panels of Grasspave2. To take them apart, just squeeze the prongs together and lift off the slot. show. A small amount of excess stone fill should be left above the top of the rings to provide visu- al cover and additional UV protection. This excess will migrate, but usually not very far. Size and Shape Requirements for Gravel Fill You will need one and a quarter inch (3.2 em) of gravel fill, before compaction. After compaction the gravel should be only be slightly higher than the rings ('/s inch, 3 mm above). The following criteria for gravel fill will make the most of the systems performance: • Hard-resistant to breaking, crushing or crumbling • Sharp and angular (do not use rounded pea gravel) • Clean, washed (free of fines) • Size 3/oe to o/1 inch (5 mm to 1 em) Other fill material may be used in certain situations, but may be considered use-specific or experimental. Please consult with our technical support staff regarding fill material not meeting the above criteria or for installations requiring "binders." I I I I I I I I I I I I I I I I I I I 16 Dust Suppression Dirt and gravel roads have the potential to kick up dust and dirt when traversed. Many communities have regulations limiting or eliminating gravel surfaces from new construction. Rest assured, if you design a Gravelpave2 surface you will be getting a virtually dust- free surface. The clean and washed fill material required to fill the rings will not have any more dust than an asphalt-paved surface. Gravelpave2's geotextile fabric will prevent the dust -sized particles contained within the base material (existing gravel surface or dirt), from being displaced by moving tire or wind forces. Industry Advantages Economic Advantages Whether you are an engineer, architect, landscape architect, contractor or homeowner you will be concerned with the cost of you project. Grasspave2 and Gravepave2 will save you money. Our products will save on design costs, installa- tion costs, component materials, maintenance/operations expenses and lifecycle costs. We can find a way to reduce your site expenses with our porous pavers. rutting in this ADA accessible trail. When designing, you may be able to eliminate or reduce storm- water filters, detention basins, conveyance lines, modifying grading requirements, or many other "necessities" associated with asphalt or concrete. A great deal of your stormwater mitigation plan can be built into Grasspave2 and Gravelpave2. Installers have been astounded by the speed and efficiency for which large areas can be accommodated by our large rolls. Unrolling our mats, snap fitting. and cutting is easy and requires no special machinery. Please view our technical specifications (from www.invisiblestructures.com, call 800-233-1510, or avail- able through our partner network) for the installation procedure. A brief installation overview is also on pages 8 and 10). Compacted sandy gravel road base placed above compacted subgrade, 95% modified Proctor density. Gravelpavel rolls are laid, pinned, and filled with clean, sharp gravel. In addition to cost savings in the design phase, you may be able to eliminate other components during installation such as root protection for trees, grates, manholes, curbing, and tree and vegetation removal costs. Maintenance and operations costs are significantly reduced over asphalt and concrete surfaces. A. (Andy) E. Undsey, Director of Grounds Maintenance, University of South Alabama, in his written analysis dated February 18, 1999, compared the cost of our porous systems to asphalt pavement using historical data from university records. The conclusion was a $56,000 savings over 20 years, by using Grasspave2 and Gravelpave2. Our products can save you the most money by combining your surfaces' uses into one area. Multiple surface use means savings on real estate, design costs, maintenance, insur- ance and more. You can have a fire lane that doubles as "green space" for employees or visitors, combine a parking lot with a bio-swale and stormwater mitigation system, and expand your lawn into the driveway. The Grasspave2 and Gravelpave2 installations at Reliant Stadium, Houston, Texas, pull quadruple duty, providing over seven acres of parking, stormwater mitigation, required "green space," and an outdoor festival site which generate additional income. As mentioned above, Grasspave2 and Gravelpave2 have a longer lifespan than asphalt. Compound the above savings with the longer lifespan, and you can have a lifecycle cost which can save thousand of dollars on even moderately sized installations. Competitive Advantages Our porous pavers not only have advantages over impervious surfaces, we are proud to compete with any other plastic porous pavers manufactured. Our products are the strongest on the market 5, 721 psi installed (39,273 kPa, 823,844 psf or 7,414,416 psy), or 2,100 psi empty. Grasspave2 and Gravelpave2 have For Grasspave2: Compacted sandy gravel road base placed above compacted subgrade, 95%modined I I I I I I I I I I I I I I I I I I I 18 92 percent void space for the best root development and grass coverage (Grasspave2) and the most volume available for desired fill (Gravelpave2). Most other plastic pavers come in rigid unit blocks, which are cumbersome to install and difficult to cut and shape. Grasspave2 and Gravelpave2 rolls are considered the favorite to work with by installers, for the flexibility, continuity, and speed of installations. Grasspave2 is the only product on the market specifying sand infill for the grass roots. Sand is recom- mended as the infill of choice for grass pavers by Professor Bruce K. Ferguson, Univ. of Georgia, author of the book, "Porous Pavements." Competing Technologies • Keep the porous paving area free of sediment and erosion from adjacent areas as they can cause drainage and aesthetic issues. Extra care should be taking for use in swales or berms. • Slope should be considered. Grasspave2 and Gravelpave2 perform the best for all vehicles when the slope is no greater than 8 percent. Light vehicles (golf carts), bicycles, and pedestrian areas can have up to a 20 percent slope. Grasspave2 in fire lanes should not exceed five percent (consult your local fire departments). • Check the permeability of existing underlying soils. Percolation rates should be .64 em to 1.3 em of water per hour (EPA guidelines). • The water table should be about three feet (approx. 1 m) below base course in most instances. • Bedrock should not be closer than two feet (0.6 m) below base course. Porous paving technology has made great strides not only in flexible plastic pavers but in other areas as well. Permeable asphalt, permeable con- crete, interlocking unit blocks, rein- forcement mats, and concrete grid pavements, have all improved and advanced to meet the growing demand for environmentally friend ly technolo- gies. It is Invisible Structures' firm belief that you should use porous paving, even if it is not our product line, whenever possible. The more Vancouver City Works Yard, Vancouver, British Columbia-main staff parking lot, done in Gravelpave2. • Avoid use of Grasspave2 and Gravelpave2 in areas where high- speed acceleration or braking and turning occur. Examples are entrances and exits to parking lots that connect to higher speed roads. you use these technologies, the better accepted they become: If you have to pave, porous pave! Invisible Structures also contends that while these competing tech- nologies have their place, in most instances, our Grasspave2 and Gravelpave2 systems outperform, last longer, require less maintenance, look better, and are easier to install. Check with our technical specialists at 800-233-1510 for the latest data. Designing for Grasspave2 and Gravelpave2 Design for Use Tfyour site varies from these condi- tions, please consult lSI directly, 800-233-1510, as some conditions can be overcome with design and component adjustments. Base Course Design Calculating the depth and composition of materials for the base course incor- porates the same design criteria as for other pavements: • Load-bearing capacity of native (or fill) subsoil, • Plasticity or impact of moisture on strength and longevity, • Frostheave potential, and • Traffic load, frequency and/or duration. Sample Base Course Depths Please consult with a soils engineer There is an area in your development, site. or home that will most likely ben- efit from Grasspave2 and Gravelpave2. We advise that you take a look at prop- er use patterns, site conditions, and other specifications to get full advan- Fire lane, San Mateo, CA-Many native grasses and other attractive vegetation can be grown in Grasspavel. for site-specific base requirements. Generally, the depth that is used under asphalt will be the requirement under Grasspave2/Grave lpave2. Golf carts and pedestrian traffic may require nothing over sandy gravel soils, and just two to tage and long life out of our products. Invisible Structures, 800-233-1510, is available for preliminary design assistance and consultation. Please note that other porous paving systems are NOT interchangeable with Grasspave2 or Gravelpave2, consult our technical specifications for full installation instructions. Considerations for Design: • High use, low speed, and unlimited traffic volume is optimal for Gravelpave2 • Low to moderate use, low speed, with recovery time is perfect for Grasspave2 or Gravelpave2 four inches of base course (5-10 em) over very weak soils. Cars usually need a six-to eight-inch base course (1 5-20 em). Buses, trucks, and fire engines can easily require eight to 12 inches (20-30 em) or more. The use of geotextiles, below the base is not required, but will prevent integration with subsoils and is strong- ly advised in areas of clay or silt soils and frost heave. Do not use 100 percent limestone base as limestone will compact and become impervious-If limestone must be used, mix with 25-30 percent sand (AASTO M6 or equal). I I I I I I I I I I I I I I I I I I I I I I I I 20 Bedding Sand Not Necessary Do not use a sand setting base with our products. Unlike concrete pavers, bricks, and other rigid pavers-our Grasspave2 and Gravelpave2 are flexible and do not require sand to level. Edge Protection For aesthetic and maintenance considerations, you may want to design in a durable edging material to separate our porous pavers from adjacent areas of turf or to simply delineate a fire lane or path. With Gravelpave2, an edging can prevent vegetation from encroaching onto the system and can prevent the gravel fill from migrating at the edge. Steel, aluminum, wood, brick, or con- crete are all acceptable edging materials. Keep the edging flu sh or slightly higher than the porous paver grade. Maintenance and Operation Grasspave2 Maintenance Irrigation is required in dry climates. Any popular pop-up system can be used. Simply cut out rings to reveal the irrigation head. If golf courses in your area use irrigation systems, you probably should in your Grasspave2 installation. Be careful not to over- water as this will encourage shallow root development. Fertilize once a year with an NPK slow-release fertilizer that contains trace elements. There are many brands on the market. Do not aerate! You'll end up with product damage. When installed using sand in the rings, there will not be a compaction problem. Be careful not to use clay-based sods in pedestrian or vehicular traffic areas-use sandy soil sod, or seed and mulch. There seems to be no problem with sod selection for fire lanes. If the Grasspave2 area has just been seeded or sodded, drive on it only in an emergency. Gravelpave2 Maintenance Potholes will only appear if the base course has not been compacted properly before laying the rings or if the base material is allowed to mix into clay soils below (use nonwoven fabric to keep separate). Should this occur, remove a section by vacuuming the gravel from the rings, unfasten the snap fit fastener, bring the base course to the proper grade and compaction, put the Gravelpave2 square back in place, anchor, and fill to the top of the rings. Seasonally check the rings in high-traffic areas and entrance lanes for lower levels of fill and replace by sweeping gravel from other areas to bring it level again. Leaves should be raked or vacuumed and not allowed to decay. Organic matter will stimulate weed growth and reduce porosity. To attack any occa- sional weeds that may locate within the Gravelpave2 installation, simply spray them with a weed killer (such as RoundupTM) and remove them when dead. Cold Climate Concerns Porous pavement thaws faster than conventional pavements because it allows melted water to flow directly through the pavement, increasing the temperature in the cross-section. Grasspave2 and Gravelpave2 are made from flexible High Density Polyethylene (HOPE) plastic with UV inhibitors, which withstands repeated freeze-thaw cycles and continuous subzero temperatures without cracking. Residence, Houston, TX-Grasspave2 supported grass sections in this custom home driveway. I I I I I I I I I I I I I I I I I I I 22 Fire departments usually require you to plow snow that is over three inches deep. (7.5 em). Consult with your local fire department for their guidelines. Educate your snow removal crew to take care not to have the plow blade make contact with the Grasspave2 or Gravelpave2 systems. Experienced snowplow drivers can leave a thin layer of snow on the systems or they can attach skids (% inch-2 em) to the bottom of the blades. Sales and Technical Support Partners Invisible Structures, Inc. welcomes the opportunity to review designs and answer technical questions. Design details, technical specifica- tions, white papers, and other support material may be downloaded from our web site. See a comprehensive list of project profiles and case studies at www.invisiblestructures.com. In addition to the high-quality, professional, experienced staff at our main headquarters in Colorado, we have excellent partners represent- ing their geographical areas. They are prepared to assist you locally, at all levels, with your project needs. Please contact us or check our web site for your partner name and information. Contact Information Invisible Structures, Inc. 1600 Jackson St. Suite 310 • Golden, Colorado 80401, USA 800-233-1510 overseas and locally 303-233-8383 Fax 800-233-1522 overseas and locally 303-233-8282 www.invislblestructures.com email: sales@invisiblestructures.com Grasspave2 and Gravelpave2 Patent No. 5,250,340 Held by William Bohnhoff, ASLA. Copyright © 2006 Gravelpavel.· Available in several roll sizes. Squares weigh 1. 97 kg (4.341b) each. Colors: cashew Brown, Black, Pewter Grey. Terra Cotta. Resin: HOPE. Strength: 402 kglcm2 (5, 120 psi). in the main drive aisle of the works yard and Grasspave2 is used for the parking bays. Grasspavel and Gravelpavel: Reusable snap connector requires 51bs to connect and resists 70 lbs of pull-apart force. I I I I I I I I I I I I I I I I I I I 24 Beachringsl, a portable and re-usable plastic boardwalk system, provides an attractive, comfortable, and slip resistant surface for equal access to beaches. Beachringsl also works well for temporary vehicle access over mud and sand. Draincore2 conveyance layer Is used for advanced subsurface and green-roof applications. A replacement for antiquated French drains, Draincore2 can maximize drainage (58 gpm per foot width} and minimize costs. RainstoreJis the new standard in efficient sub-surface stormwater storage. RainstoreJ is modular and stackable for versatile site design. RainstoreJ is 94% void space and can be designed for detention, retention, or water harvesting for re-use. Slopetame2-much more than an erosion control blanket or mat-a completely integrated system of rings, grid, fabric, anchors, and vegetation to control erosion on some of the toughest slopes, channels, swales and more. Quick Reference Guide for Grasspave2 and Gravelpave2 ~----------------------------------------------------~ Description Also Included Available in Large, Flexible Rolls Colors Components Needed for System Traffic Compressive System Strength Life Span Recommended Maximum Slope Stormwater Storage Clean Pollutants through Bloremediation Air-Conditioning Effect Connectable ring and grid system Hydrogrow polymer~xcluslvely for Grasspave2 Yes, various sizes-see roll chart page 14 Black Base course, sand, labor, sod or seed (Irrigation is recommended) Low speed, Intermittent to moderate use Filled: 5,72 1 psi (39,273 kPa): Empty: 2,100 psi (1 4,470 kPa) 60 years 5% fire lanes, 8% carllight truck, 15-20% golf earls, pedestrian use, and trails Yes Excellent Yes Connectable ring, grid, and integrated fabric Geotextlle fabric molded to grid (exclusive to Gravelpave2) and anchors Yes, various sizes-see roll chart page 14 Black, gray, tan, terra cotta, custom colors extra Base course, l'lt (3.2cm) of'!.{ to •;,• decorative gravel, and labor Low speed, unlimited use Filled: to 5,721 psi (39,273 kPa) Empty: 2,100 psi (14,470 kPa) 25 years 5% fire lanes, 8% carllight truck, i5-20% golf carts, pedestrian use, and trails Yes Good No Heat Island Mitigation Yes-thermal conductivity, heat storage capacity, Yes-thermal conductivity, heat storage capacity, density, albedo (.40) and emissivity density, albedo (varies) and emissivity Reduces Runoff and Non-Point Source Pollution Yes Recycled Content Erosion Control 100% recycled HDPE plastic Yes Airborne Dust Capture and Retention Promotes and Retains Tree Growth ilPorh~·r<'<•< Groundwater Excellent Yes Yes 1600 Jackson St., Suite 310, Golden, CO 80401, USA 800-233-1510 . Fax: 800-233-1522 Overseas and locally: 303-233-8383 · Fax: 303-233-8282 www.invisiblestructures.com email: sales@invisiblestructures.com Yes 100% recycled HOPE plastic, remnant fabric Yes Good Yes Yes Gravelpave2 and Grasspave2 Patent No. 5,250.340 held by William Bohnhoff. ASLA Copyright <> 2006 I I I I ' II I I I PERVIOUS UNIT I PAVERS I I I I I I I I I I I I I I Eco Dublin™ Environmental Collection Beauty. funct1ona 1ty ano qual1ty a'e hallmarl--s of the Belgard Commerc1al brand. and our Environmental Collec:1on of permeable pa\ ers IS no excopt1on. Belgard permeaole pavers comb ~e the best of BelgC~rd w1th IPnovdl ve sto'rnwater management 'or a super or product I ne that rrow:les susta1rable so lut1ons and aesthetically appealing dec;1gns ADA cOiiPLiANT fl LT. VEHtcULAR-BOMM [;;) MECHANICAL INSTALLATION ~ I I I I I I I I I I Benefits of Belgard® Permeable Paving Stone Systems SAMPLE PICP SYSTEM CROSS SECTION Jctnt/Votd F~l Typ R,89or Be!R,arcl Perme;:~blc 9 a.ar~te PAVlHS (ot $1m•lar) Bedd~Cous.e II':!~TT,.Aw·-·IJ Oocn-G<adcd s..e ~·ly:l.'r;7~ Sub-B<I«;f" M.n g-Tyt No_ 2 •bN ·~- • Undet'drall"'----' lnc:ludo!d•~l*l ........... utl"no!!Dt>cinJrt'orool._l'r"' ......... MI• ....... ~ ... Geosynthetw:s on bonGm and sides of o~n ar.ctec~ base (~f'Citto:'"'""'"*tnel"""t ... eol~lnt..,IIHC""~t.neltor no~·· ..... onc...,l TN! avat.ltl*!y ~ $peCffl:: ~1e ~of.~ Vi]r1f from regon 10 regon. h c.35e5 ~ 11 becomes neceasary to I<.OihMe a~ ue_ yot1 ptqael ~ s"'Ad ili'""llfS be consl.bd. Ttv.['L lr rt Eco Dublin1M Smart-lookrng style meets smart science. The classrc look of cut stone and contemporary materals technology cornbrne rn Eco Dublin ",the latest addrt on to Belgard's Envrronmental Serres of permeable pavers. 3 7/16" X 6 7/8" X 3 1/8" (87.78mm x 174.57mm x 80mm) 6 7/8" X 6 7/8" X 3 1/8" (174 57mm x 174.57mm x 80mm) 3 7/16" X 10 1/4" X 3 1/8" (174 57mm x 261.35mm x 80mm) Shapes Mechanical Installation Laying Pattern I I I I I I I I INLET FILTER I INSERT 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 I I I I CALIFORNIA CURB SHELF BASKET WATER CLEANSING SYSTEM SAN DIEGO REGIONAL STANDARD CURB INLET WIDTH OF INI..ET WILL VARY I SHElF ORNE PIN FIGURE 1 DETAIL OF PNUS FIGURE 3 DETAIL OF PROCESS BOX MANUFACTURED FROM MARINE GRADE FIBERGLASS & GEL COATED FOR UV PROTECTION 5 YEAR MANUFACTURERS WARRANTY PATENTED ALL FILTER SCREENS ARE STAINLESS STEEL 47 TO 51 FIGURE 2 DETAIL OF INSTALlATION FLOW RATES per 3 FT. Basket Q-sD'cct"A v 2'g"h cd-~.,-.67 so A(~) h (ft) Q (.g) Coarn Scroen .62 .lU 0.146 1.06 --.58 7.36 0.75 3.53 RnoScreon .68 1.02 1.167 4.01 TOTAL 8.6 NOTES: 1.51/EIF SYSTEll PROVIDES FOR CNTI~ COI£11AG£ OF INI..ET OPENING SO ro DMRT ALL FLOW ro BASKET. 2.51/EIF SYSTEll 1/ANUFACTIJR£0 FROM MARINE GRADE FIBERGIA5S,GEI. CQollEI) FOR W PROTFCTION. 3.51/EIF SYSTEll ArrACHED ro THE CATCH BA51N WITH NON-G'ORROSNC HARDWARE. 4.Fil.TI?ATION BASKET STRUCTU~ MANUFACTURED OF /JARINE GRADE RBERGIASS,GEI. CQollEI) FOR W PROTECTION. 5.Fil.TI?ATION BASKET RNE SCREEN AND COARSE CONTAINMENT SCREEN MANUFACTURED F110IJ STAINLESS STEEL 6.Fil.TI?ATION BASKET HOUJS 80011 OF ABSORBENT fliED/A ro CAPTURE HYDROCN1BONS. 80011 IS EASILY REPLACED WITHOUT REfii(}VfNG /iiOUNT1NG HARDWARE. 7.Fil.TI?ATION BASKET LOCATION IS 0/RECTI.Y UNDER liiANHOI.E FOR ~ liiAINTENANC£. EXCLUSIVE CALIFORNIA DISTRIBUTOR: B/0 CLEAN E:NVIRONME:NTAL SERVICE: TEL. 760-4.33-7640 F"AX:750-4.3.3-.317c5 E:rna11: lnf'oObloc:/eonenv/ronrnento/.net -S1M/1IEE QIJAIJIY PIIOIJIJCIS NIE /U.T FOR EASY a£NINfl AM! NIE -7rJ /JC _, NlM5TIIJJCliiiE AM! SWJWJ lAST FOR llfC4IIf3: CURB INLE:T BASKE:T SYSTE:M f....;;;;;;;----+=------l DATE: 04/12/04 SCAL..E:SF" -1.5 - DRAFTER: N.R.B. UNITS -INCHES I I I I I I I I I I I I I I I I I I 810 CLEAN ROUND GISB MEDIA FILTER WITH EASY MAINTENANCE SHELF SYSTEM FOR USE IN CURB TYPE INLETS ROUND GISB FOR MOUNTING UNDER MANHOLE OE:TAIL OF PARTS RGURE 1 SHElF FLOW ~15 per - tJ-SO'ctf'A v Pg'h cd-ca:;.""-.67 so A(lrf') h (In) Q (.g} TOP SIOC 1 1:15.22 5.50 3.42 .ll£l)J4 .4 25J .113 THROAT FLOW ~TE 2.4 CFS NOTES: I .SHELF SYST<M PROVIDES FOR £NT/RE COII£7?AG£ OF INLET OPENING SO 10 0/Veff ALL FLOW ro BASKET. 2.SH£LF SYST<M MANUFACTURED FROM MARIN£ GRADE: RB£RGIASS,G£1.. CQ47ED FOR UV PROT£C110N. :J.SH£LF SISTEM A"ACHED ro THE CATCH BASIN WTT/1 NON-CORROSIV£ HARDWA/1£. 4.RL111A110N BASKET STRUCTURE MANUFACTURED OF .w.IRIN£ GRADE: RB£RGIASS,G£1.. CQ47ED FOR UV PROTEC110N. 5.RL111A110N BASKET RN£ SCRffN .WD COARSE: R£MOVABI..£ BASKET CATr;HE:S EVVrYTHING .WD .w.IY 80 R£MOVED THROUGH MANHOI.£ WITHOUT £Jffl?Y. CONTAINMENT SCREEN MANUFACTURED FROM STAINLESS ST££L. 6.RL111A110N BASKET HOLDS 8001.1 OF NJSORBE:NT M£0/A 10 CAPTURE HYDROCARBONS. 8001.1 IS £AS/LY REPLACED WITHOUT REMOVING MOUNTING HARDWARE. 7.RL111ATIDN BASKET LOCA110N IS DIRECTLY UNDER MANHOI.£ FOR EASY 1./A/NTENANC£. SIO CLEAN ENVIRONMENTAL SERVICE __,. PO BOX BB9 OCEANSIDE CA 92.049 r..,;;;;;;;;;...------r.=----1 760-43.3-7640 FAX:7B0-4.33-3176 -GISB MF WITH SHELF - DATE: 04/1 2/04 SCALE: SF -1 S - DRAFTER: N.R.B. UNITS -INCHES --