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State Water Board workshop spotlights regional stormwater credit programs and calls for statewide guidance
Summary
At a State Water Resources Control Board workshop, Contra Costa, Anaheim and other regional programs described off-site compliance and credit-banking models that finance larger green stormwater infrastructure projects; presenters urged statewide templates, CFD mechanisms for O&M, and consistent MS4 permit language to scale programs equitably.
Contra Costa County and Anaheim officials told the State Water Resources Control Board on Nov. 20 that regional "credit" programs — where large off-site green stormwater infrastructure (GSI) projects generate compliance units that developers or municipalities can buy — can accelerate water-quality improvements and finance long-term operations.
Lisa Austin and Rinta Parkins of Geosyntec, presenting the Contra Costa Regional Alternative Compliance (REC) system, described a framework in which sellers (public agencies or private entities) build off-site GSI, generate "equivalent acres greened" compliance units based on pollutant-reduction formulas, and sell those units through a joint powers authority (JPA). Buyers pay upfront…
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