CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. R5-2006-0135 WASTE DISCHARGE REQUIREMENTS FOR AERA ENERGY LLC REAGAN WASTEWATER DISPOSAL FACILITY

1. Aera Energy LLC, a California limited liability company, (Discharger) owns and operates crude oil production wells, oil and produced water treatment plants, and wastewater disposal facilities in the South Belridge Oil Field. 2. The Reagan Wastewater Disposal Facility (Facility) consists of 32 unlined surface impoundments. Wastewater discharged at the Facility is oil field produced water from the Dehydration 20 Plant. 3. This Order implements the Water Quality Control Plan for the Tulare Lake Basin, Second Edition- 1995 (Basin Plan), which designates beneficial uses, establishes water quality objectives, and contains implementation plans and policies for all waters of the Basin. 4. The discharges are subject to the requirements of Title 27, California Code of Regulations, Section 20090(b) et seq (Title 27), and are currently regulated by Waste Discharge Requirements (WDRs) Resolution No. 58-193. The WDRs are outdated and are being updated to reflect Basin Plan policy, current regulations, and site-specific technical information