Cal. Code Regs. tit. 23 § 3934
Resolution No. 99-13 adopted on August 12, 1999 by the Los Angeles Regional Water Quality Control Board (LARWQCB) amends the Los Angeles Water Quality Control Plan (Basin Plan) to prohibit new septic systems in the Oxnard Forebay area of Ventura County effective on the date of approval by the Office of Administrative Law. The amendment also prohibits discharges from existing septic systems after January 1, 2008. The prohibition does not prevent repairs to existing septic systems in the Oxnard Forebay prior to January 1, 2008, provided that the purpose of such repairs is not to increase capacity. Individual septic systems located on lot sizes equal to or greater than five acres are subject to this prohibition. However, the prohibition does not preclude the LARWQCB from issuing Waste Discharge Requirements for septic systems on lots of greater than five acres.
Cal. Code Regs. Tit. 23, § 3934