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HomeMy WebLinkAboutH 25 MULTI FAMILY - PDP200004 - SUBMITTAL DOCUMENTS - ROUND 3 - STORMWATER-RELATED DOCUMENTSDate: Included N/A Include name of project, date, name of design engineer Statement of compliance with the manual FP Final copies required to be stamped and signed by Colorado licensed PE Section, Township, Range Vicinity Map Roadways within and adjacent to site Names of surrounding developments Master Drainage Basin where site is located Existing stormwater drainage facilities and drainage patterns Existing irrigation facilities (if applicable) Existing land uses Existing ground cover and/or vegetation type Existing soils info Reference/discussion regarding pertinent Master Drainage Basin and any improvements planned for the area General basin characteristics Existing and planned land uses within the Master Drainage Basin Irrigation facilities that influence or are influenced by the local drainage (if applicable) Refer to Floodplain Checklists for requirements Proposed land uses and/or project summary Site acreage Discussion of proposed drainage plan, specific details that may include drainage issues at specific design points Conveyance of minor and major stormwater systems to an existing stormwater conveyance Detention basin and outlet design; summary table for each detention basin WQCV design LID systems and design Maintenance access to the drainage facilities Easements/tracts for drainage purposes Reference to any previous drainage studies for the area Four‐Step process outlined and discussed Using CoFC rainfall data for 2‐yr and 100‐yr recurrence intervals Using proper design storm recurrences (2‐yr and 100‐yr) Runoff calculation method Detention calculation method FP Street Capacity discussion FP Inlet Capacity discussion PDP and FP Drainage Report Checklist Project Name: General Location & Existing Site Info Master Drainage Basin Info Floodplain Information Cover Letter Project Description Proposed Drainage Facilities Drainage Design Criteria Page 1 of 2 Date: Included N/A PDP and FP Drainage Report Checklist Project Name: FP Pipe network models discussion FP Swale or channel sizing/capacity discussion FP Emergency spillway sizing discussion Included variance request form Statement of compliance with all erosion control materials that are to be provided with final plans FP Separate Erosion Control Report and Plans submitted Statement of compliance with manual, master drainage plans, floodplain regs, other state/federal regs Summary conclusion of drainage concept and effectiveness of design Referenced criteria, master plans, technical info Hydologic calculations: historic and developed runoff Detention basin volume calculations SDI data spreadsheet (meets detention drain time criteria) SWMM models (if applicable) LID exhibit and calculations Floodplain maps Soil survey information FP Street capacity FP Inlet sizing and capacity FP Storm pipe network models FP Erosion protection (i.e. riprap calculations) FP Swale or channel sizing FP Outlet structure design FP Spillway design Drainage map Conclusion References Appendices Variance Requests Erosion Control Page 2 of 2