
VENTURA — The Ventura Countywide Stormwater Quality Management Program (VCSQMP) is pleased to announce the availability of the Ventura County Technical Guidance Manual for Stormwater Quality Control Measures 2025 Reissuance (2025 TGM). The 2025 TGM is a comprehensive resource that provides sizing and design guidance for post-construction stormwater quality control measures that comply with requirements in the Regional Phase I Municipal Separate Storm Sewer System (MS4) Permit for stormwater and non-stormwater discharges within the coastal watersheds of Los Angeles and Ventura Counties (CAS004004, Order No. R4-2021-0105, 2021 Regional MS4 Permit).




































