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Understanding SWPPPs: Storm Water Pollution Prevention Plan (SWPPP)

Learn about the requirements, certification, amendments, erosion control, pollutants, BMPs, monitoring, and termination in a SWPPP.

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Understanding SWPPPs: Storm Water Pollution Prevention Plan (SWPPP)

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  1. Understanding SWPPPs • Storm Water Pollution Prevention Plan (SWPPP) • All dischargers over 1-acre must develop a SWPPP • 6 major portions of every SWPPP • Site Evaluation and Design Development • Assessment • Control Selection and Plan Design • Certification & Notification • Construction/implementation • Final Stabilization

  2. Understanding SWPPPs • Storm Water Pollution Prevention Plan (SWPPP) • CERTIFICATION • Written statement – “I certify under a penalty of law…” • Signed by the “operator” • An “authorized representative” not necessarily the owner • Notice of Intent (NOI) • Must be submitted 7 days prior to starting construction • SWPPP must be completed prior to issuing the NOI • DYNAMIC • Must be a living document… • NOTIFICATION • Must be posted ON-SITE (notice at entrance stating where it is) • If no location on-site then a notice must be posted where it is

  3. Understanding SWPPPs • Storm Water Pollution Prevention Plan (SWPPP) • Minimum Requirements • Identify site operators • Function of the project • Sequence and timing • Total disturbed area • General location map • Site map • Discharges from related industrial activity (dedicated AC plants, PCC batch plants…) • Interim and permanent stabilization activities • Records • Description of practices to divert flows, retain flows…

  4. Understanding SWPPPs • Storm Water Pollution Prevention Plan (SWPPP) • Minimum Requirements (continued) • Inspection schedule • Post-construction management • AMENDMENTS • With-in 7 days of change that has significant effect • Must be amended if discharges caused water quality exceedance or if BMPs ineffective

  5. Understanding SWPPPs • SWPPP • The plan must be site specific • Includes site location map • Includes the erosion control plan • Address the site discharge locations • Identifies receiving waters… • The plan must be dynamic • Site inspection reports • Amendments • Rain reports • Spill response items • Includes the BMP wall map (erosion control plan)

  6. Understanding SWPPPs • SWPPP • The plan must be certified • The plan is a contract • EPA requirements • State requirements • “I certify under penalty of law (that I will implement this plan…)” • The plan must be signed and dated by authorized individuals • The plan identifies the person responsible for implementing the plan • Operator – The individual who has operational controls, financial control or ownership on a site

  7. Understanding SWPPPs • SWPPP • Notice of Intent

  8. Understanding SWPPPs • SWPPP • The erosion control plan is part of the SWPPP

  9. Understanding SWPPPs • SWPPP • Soils • The plan addresses the soil types anticipated

  10. Understanding SWPPPs • SWPPP • Runoff coefficient and water quality • Preconstruction/predevelopment runoff • Pre and post construction should be equal • California requires that post development runoff be equal to 85% of original existing conditions. • Receiving waters • Identifies the where the waters will end up • Identifies if these waters are 303(d) listed • Could add additional requirements of the project

  11. Understanding SWPPPs • SWPPP • Environmental assessment • Addresses the potential threats to threatened and endangered species • Identifies if there is an historic aspect to the site

  12. Understanding SWPPPs • SWPPP • Pollutants of concern • Sediment • Turbidity • Hydrocarbons or petroleum products • Biological • Metals • pH • Nutrients • Solid waste • Temperature • Hazardous waste and toxic waste • Trash • Construction materials handling • organics

  13. Understanding SWPPPs • SWPPP • Identifies BMPs • Site planning and management • Erosion control • Sediment control • Runoff control • Good housekeeping and materials management • Post construction BMPs • Relative BMP placement • Amendments • VERY important to constantly amend the plan • Makes the plan achievable • Most plans contain many “canned” documents and statements • Many construction activities will violate the SWPPP and must be amended

  14. Understanding SWPPPs • SWPPP • Monitoring and Sampling Requirements • Many sites have sampling requirements • Be certain that you are sampling for all required pollutants! • Spill prevention and controls • The project’s spill prevention controls and countermeasures program must be included in the SWPPP • Notice of Termination • 100% of all work on the project must be complete. • Includes all building improvements • Achieve final stabilization - 70% vegetation ESTABLISHED • Transfer coverage to another authorized party (the owner sells the property)

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