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i CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. R5-2009-0057 RESCINDING WASTE DISCHARGE REQUIREMENTS The California Regional Water Quality Control Board, Central Valley Region, finds that the Board adopted the following Orders which are no longer applicable for the reasons shown: Waste Discharge Requirements Order No. 92-192, adopted on 25 September 1992, prescribes requirements for the discharge to land of pistachio processing wastewater from the Dicker Pistachio Processing Plant at 21721 Road 20 in Madera County. The plant ceased operations in 1992 and has not discharged since then. In a letter dated 24 December 2008, the Discharger requested to have the Order rescinded. Therefore, rescission of the Order is appropriate. (KC) Waste Discharge Requirements Order No. 96-176, prescribes requirements for a pond used for waste disposal operations for the discharge of'designated waste' at Pacific, Gas and Electric Company's McDonald Island Gas Storage Facility in San Joaquin County. The Discharger was ordered to discontinue this discharge in 1986 and in 1994 the pond was clean closed under Chapter 15 requirements (now Title 27). Groundwater has been monitored since then and in a 2008 report the Discharger demonstrated that the clean closure was successful and groundwater meets the cleanup standards. Because of the successful remediation it is appropriate to rescind Waste Discharge Requirements Order No. 96-176. (WLB) Waste Discharge Requirements Order No. 97-008 was adopted on 24 January 1997, prescribes requirements for J.R. Simplot Company and Occidental Chemical Corporation, Former Courtland Facility Groundwater Treatment System, Yolo County, for groundwater treatment by phytoremediation. Groundwater containing nitrogen was used for its nutrient value to irrigate trees. Nitrogen concentrations in groundwater have declined to meet cleanup objectives, the extraction pump has been removed, and it is appropriate to rescind Waste Discharge Requirements Order No. 97-008. (AST) Waste Discharge Requirements Order No. 98-213 was adopted on 23 October 1998 for Union Pacific Railroad Company Former Maintenance Facility, Tracy, San Joaquin County, prescribes requirements for the discharge of treated groundwater to infiltration wells during the course of operation of two groundwater extraction and treatment systems. Union Pacific has discontinued operating the two groundwater extraction and treatment systems and has ceased the discharge. The systems are no longer necessary to control off-site migration of the dissolved plume. The Discharger has requested rescission of the Order and the Order is no longer needed. Site cleanup has not been completed and additional actions at the source area are necessary. (KLD) Waste Discharge Requirements Order No R5-2004-0017 adopted on 30 January 2004, prescribes requirements for Mencarini and Jarwin, Inc., dba Chrome Craft, Former Chrome Craft Facility, Sacramento County, for a one- time addition of MRX, a proprietary in situ reducing agent, to groundwater to treat hexavalent chromium. The injection occurred in April 2004, and three years of quarterly monitoring show that the MRX has been consumed, and it is no longer affecting groundwater geochemistry. Therefore, it is appropriate to rescind Waste Discharge Requirements Order No. R5-2004-0017.(AST) IT IS HEREBY ORDERED that the above Waste Discharge Requirements orders are rescinded. I, PAMELA C. CREEDON, Executive Officer, do hereby certify the foregoing is a full, true, and correct copy of an Order adopted by the California Regional Water Quality Control Board, Central Valley Region on 24 April 2009. ��^ PAMELA C. CREEDON, Executive Officer