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Stormwater Management Protocol: Exceedance Response Actions for Effective Effluent Control

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Learn about exceedance response actions, effluent limitations, and indicators to maintain compliance with NALs. Implement BMPs and submit ER reports for operational source control. Certify BAT/BCT or background exceedances. Follow EI triggers for compliance.

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Stormwater Management Protocol: Exceedance Response Actions for Effective Effluent Control

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  1. EXCEEDANCE RESPONSE ACTIONS Narrative effluent limitations and Exceedance Indicators (EIs) – NALs and adjustments Baseline (all facilities start here) Sampling EI Trigger QSE 1 QSE per quarter Level 1 Operational Source Control Review of SWPPP and implement operational source control BMPs and submit Level 1 ER Report Sampling EI Trigger QSE 1 QSE per quarter Certify one of the following: (1) BAT/BCT and no more BMPs; or (2) exceedances not from industrial activity (“background”) – and submit a Level 2 ER Report Level 2 Compliance Determination Sampling EI Trigger QSE 1 QSE per quarter

  2. There are two types of Exceedance Indicator triggers: • The annual average of all results for any one constituent exceeds the NAL • The daily average for any one constituent of all results exceeds 2.5 times the NAL value Trigger • Acronyms: • BMP – Best Management Practice • ER – Exceedance Response • EI – Exceedance Indicator • QSE – Qualifying Storm Event • NAL – Numeric Action Level • SWPPP – Storm Water Pollution Prevention Plan

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