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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
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
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…
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
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)
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
Understanding SWPPPs
SWPPP Notice of Intent
Understanding SWPPPs
SWPPP The erosion control plan is part of the SWPPP
Understanding SWPPPs
SWPPP Soils
The plan addresses the soil types anticipated
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
Understanding SWPPPs
SWPPP Environmental assessment
Addresses the potential threats to threatened and endangered species
Identifies if there is an historic aspect to the site
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
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
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)
Understanding SWPPPs
