WASTE DISCHARGE REQUIREMENTS FOR AERA ENERGY LLC HIGHWAY 33 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 Highway 33 Wastewater Disposal Facility (Facility) consists of 28 unlined surface impoundments. Wastewater discharged at the Facility includes: (a) oil field produced water from the Dehydration 20 Plant and Dehydration 27 Plant; (b) backwash water from treatment filters at the Water Plant 27; and, (c) softener regeneration wastewater from ion exchange units at Water Plant 27. 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 (CCR), 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 The WDRs are outdated and are being updated to reflect Basin Plan policy, current regulations, and site-specific technical information