EPA Example Construction SWPPP: Medium-Sized (~20-acre) Residential Subdivision Introduction This example Stormwater Pollution Prevention Plan (SWPPP) was prepared using the U.S. Environmental Protection Agency’s (EPA’s) guide, Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Operators and its accompanying SWPPP template. Both the SWPPP Guide and the SWPPP template are available at http://www.epa.gov/npdes/swpppguide. The instructions and references in this SWPPP refer to the SWPPP template and are left in for illustrative purposes. The SWPPP guide, SWPPP template, and this hypothetical SWPPP example are provided for compliance assistance purposes only; for a complete list of permit requirements, refer to EPA’s Construction General Permit at: http://www.epa.gov/npdes/stormwater/cgp. Use of this example SWPPP This example SWPPP represents a hypothetical project for the construction of a residential subdivision on 20 acres in Idaho. For this example, the SWPPP was prepared in November 2005 with construction commencing in May 2006. To illustrate how an actual SWPPP should be used, this example SWPPP includes marked-up edits to pages and copies of records such as inspection reports. For purposes of this example, this SWPPP was copied on August 15, 2006. Therefore, inspection reports and other records are current as of that date. This example SWPPP was developed for EPA’s 2003 Construction General Permit (CGP), as modified effective January 21, 2005. If you are subject to a different general permit issued by a state or EPA Region, your requirements and SWPPP template might be slightly different. Disclaimer This SWPPP is for a hypothetical project. Any similarities to actual construction projects, operators, or places are purely coincidental. Do not copy this SWPPP for your project! The best management practices and explanatory text in this SWPPP are intended to apply only to this hypothetical site. Each SWPPP must be created on a case-by-case basis to address the unique conditions and issues at a given construction site. Relying on the wording in this hypothetical SWPPP is discouraged and will not necessarily result in compliance with the Construction General Permit. EPA 833-07-003 September 2007 Stormwater Pollution Prevention Plan (SWPPP) Clover Hills Subdivision Stormwater Pollution Prevention Plan for: Clover Hills Subdivision 2202 Williams Avenue Stormville, ID 83341 (208) 444-4444 Operator(s): RBI Development, LLC Mr. Doug Lewis 13 South Avenue Boise, ID 83701 (208) 555-5555 [email protected] SWPPP Contact(s): Ms. Dorothy Williams RBI Development, LLC 13 South Avenue Boise, ID 83701 (208) 555-555 [email protected] SWPPP Preparation Date: 11/01/2005 Estimated Project Dates: Project Start Date: 05/05/2006 Project Completion Date: 10/01/2008 Stormwater Pollution Prevention Plan (SWPPP) Clover Hills Subdivision Contents SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING ....................................................... 1 1.1 Project/Site Information .................................................................................................................... 1 1.2 Contact Information/Responsible Parties ......................................................................................... 2 1.3 Nature and Sequence of Construction Activity ................................................................................. 5 1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns...............................................................7 1.5 Construction Site Estimates ............................................................................................................. 8 1.6 Receiving Waters ............................................................................................................................. 8 1.7 Site Features and Sensitive Areas to be Protected ........................................................................ 10 1.8 Potential Sources of Pollution......................................................................................................... 10 1.9 Endangered Species Certification .................................................................................................. 12 1.10 Historic Preservation ...................................................................................................................... 13 1.11 Applicable Federal, Tribal, State or Local Programs ...................................................................... 14 1.12 Maps .............................................................................................................................................. 14 SECTION 2: EROSION AND SEDIMENT CONTROL BMPS.................................................................. 15 2.1 Minimize Disturbed Area and Protect Natural Features and Soil.................................................... 16 2.2 Phase Construction Activity............................................................................................................ 17 2.3 Control Stormwater Flowing onto and through the Project ............................................................. 18 2.4 Stabilize Soils................................................................................................................................. 21 2.5 Protect Slopes................................................................................................................................ 23 2.6 Protect Storm Drain Inlets .............................................................................................................. 25 2.7 Establish Perimeter Controls and Sediment Barriers ..................................................................... 28 2.8 Retain Sediment On-Site................................................................................................................ 32 2.9 Establish Stabilized Construction Exits .......................................................................................... 34 2.10 Additional BMPs............................................................................................................................. 37 SECTION 3: GOOD HOUSEKEEPING BMPS ...................................................................................... 38 3.1 Material Handling and Waste Management.................................................................................... 38 3.2 Establish Proper Building Material Staging Areas .......................................................................... 40 3.3 Designate Washout Areas.............................................................................................................. 41 3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices...................................... 43 3.5 Control Equipment/Vehicle Washing .............................................................................................. 44 3.6 Spill Prevention and Control...........................................................................................................44 3.7 Any Additional BMPs......................................................................................................................45 3.8 Allowable Non-Stormwater Discharge Management ...................................................................... 46 SECTION 4: SELECTING POST-CONSTRUCTION BMPs .................................................................... 48 SECTION 5: INSPECTIONS ................................................................................................................ 50 5.1 Inspections ..................................................................................................................................... 50 5.2 Delegation of Authority ................................................................................................................... 52 5.3 Corrective Action Log ..................................................................................................................... 52 SECTION 6: RECORDKEEPING AND TRAINING ................................................................................ 53 6.1 Recordkeeping ............................................................................................................................... 53 6.2 Log of Changes to the SWPPP ...................................................................................................... 53 6.3 Training .......................................................................................................................................... 54 SECTION 7: FINAL STABILIZATION................................................................................................... 55 RBI Development, LLC ii Stormwater Pollution Prevention Plan (SWPPP) Clover Hills Subdivision SECTION 8: CERTIFICATION AND NOTIFICATION............................................................................. 57 SWPPP APPENDICES ....................................................................................................................... 58 Appendix A – General Location Map Appendix B – Site Maps Appendix C – Construction General Permit Appendix D – NOI and Acknowledgement Letter from EPA/State Appendix E – Inspection Reports Appendix F – Corrective Action Log (or in Part 5.3) Appendix G – SWPPP Amendment Log (or in Part 6.2) Appendix H – Subcontractor Certifications/Agreements Appendix I – Grading and Stabilization Activities Log (or in Part 6.1) Appendix J – Training Log Appendix K – Delegation of Authority Appendix L – Additional Information (i.e, Endangered Species and Historic Preservation Documentation) Tables Table 1. Timeline of Activity ................................................................................................................ 5 Table 2. Potential construction site pollutants ..................................................................................... 11 Figures Figure 1. Earth dike.......................................................................................................................... 19 Figure 2. Vegetated swale ................................................................................................................ 20 Figure 3. Erosion control blanket ....................................................................................................... 24 Figure 4. Silt fence storm drain inlet protection.................................................................................... 26 Figure 5. Gravel bag barriers............................................................................................................. 27 Figure 6. Silt fence ........................................................................................................................... 29 Figure 7. Fiber rolls .......................................................................................................................... 31 Figure 8. Sediment basin .................................................................................................................. 33 Figure 9. Stabilized construction exit.................................................................................................. 35 Figure 10. Stabilized construction exit (individual lot)........................................................................... 36 Figure 11. Temporary concrete washout ............................................................................................ 43 RBI Development, LLC ii Stormwater Pollution Prevention Plan (SWPPP) Clover Hills Subdivision 1.2 Contact Information/Responsible Parties Instructions: ― List the operator(s), project managers, stormwater contact(s), and person or organization that prepared the SWPPP. Indicate respective responsibilities, where appropriate. ― Also, list subcontractors expected to work on-site. Notify subcontractors of stormwater requirements applicable to their work. ― See SWPPP Guide, Chapter 2.B and EPA’s Construction General Permit (CGP) Part 3, Subparts 3.2, 3.3.A, and 3.4.A. Operator(s): See Appendix B – Ownership Site Map for geographic area of control. OPERATOR Contact Information Geographic Area of Control* RBI Development, LLC RBI Development owns the 20-acre parcel of land and is Mr. Doug Lewis, Owner developing the Clover Hills Subdivision. RBI 13 South Avenue Development is the initial permittee applying for permit Boise, ID 83701 coverage and will be primarily responsible for Office Phone: (208) 555-5555 developing and implementing this SWPPP. RBI Email: [email protected] Development is responsible for overall site development of lots A1–C10 including grading and infrastructure of these lots but only constructing houses on lots A2–A16. RBI Development will implement and maintain the best management practices (BMPs) specified in Sections 2 and 3, conduct inspections (Section 5) and address stormwater over the entire site including all areas disturbed by construction activities, areas used for materials storage, discharge points, and construction exits. RBI Development has entered into contract to sell lots B1–B9 to Falls Homes and lots C1–C10 to Coastal Creek Building for individual housing construction. RBI Development will also assume responsibility of inspecting lots C1–C10 for Coastal Creek Building. Lots B1–B9 will be covered under a separate SWPPP developed by Fall Homes and will not be covered by this SWPPP after these lots are sold to Fall Homes. * See Construction Operator’s Cooperative Agreement RBI Development, LLC 2