CA CGP NELS Are No Longer In Effect (mostly!)

CA CGP NELS Are No Longer In Effect (mostly!)

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Regulatory Information

ALL RISK LEVEL 3 DISCHARGERS PLEASE NOTE: The Numeric Effluent Limitations (NELs) for pH and turbidity at Risk Level 3 construction sites contained in Order 2009-0009-DWQ are no longer in effect. In addition, because receiving water monitoring is required only if the NELs are triggered, all receiving water monitoring requirements are also suspended. On December 27, 2011, the Superior Court issued a judgment and peremptory writ of mandate in California Building Industry Ass’n et al. v. State Water Resources Control Bd. The State Water Board will be amending Order 2009-0009-DWQ in accordance with the peremptory writ of mandate. The draft amendment will be circulated to the public in March, 2012, and will be scheduled for State Water Board adoption by July, 2012. Bear in mind that any project using ATS (Active Treatment Systems) will still be subject to NELs for ATS operations. ATS NELs listed in the Construction General Permit are for turbidity and also residual chemical.

EnviroTech NPDES Services


Who we are

EnviroTech NPDES Services was established in 2010 to provide professional stormwater education, industrial and construction site management for NPDES compliance, and technical support to public and private enterprises.

More about us at this link »



David is clearly an expert in Stormwater management. I will gladly take his other courses & encourage my teammates to as well.
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ong days are made more enjoyable when the info is presented by someone who's knowledge is thorough and shared in unique and interesting ways.
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Incredibly glad I took this class. Thank you.
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DG Principal Engineer
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