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P CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. R5-2003-0806 FOR TRIPLE E PRODUCE CORPORATION TRACY, SAN JOAQUIN COUNTY Triple E Produce Corporation(Discharger) is a fresh tomato packing company at 8690 West Linne Road in Tracy(site). Wash water from the processing plant was discharged to an infiltration pond, which resulted in chloroform pollution in the groundwater. In 1996, Triple E began extracting groundwater from two extraction wells and discharging it to an aeration pond. The extraction of groundwater ceased in May 2000. In July 2002, a No Further Remedial Action was issued, and all but two of the monitoring wells were abandoned due to impending development. Groundwater is about 65 feet below ground surface. Groundwater in one of two remaining wells is monitored to evaluate plume trends and migration. This Monitoring and Reporting Program (MRP) is issued pursuant to Section 13267 of the California Water Code and is necessary to monitor plume migration. Existing data and information about the site show the presence of chloroform emanating from the property resulting from the Discharger's past operation. The Discharger shall not implement any changes to this MRP unless and until a revised MRP is issued by the Executive Officer. This MRP replaces the requirements listed in MRP No. R5-2002-0810, which was issued on 19 April 2002. Prior to construction of any new groundwater monitoring or extraction wells, and prior to abandonment of any groundwater monitoring or extraction wells, the Discharger shall submit plans and specifications to the Board for review and approval. Once installed, all new wells shall be added to the monitoring program and shall be sampled and analyzed according to the schedule below. GROUNDWATER MONITORING As shown on Figure 1, there are two monitoring wells. Monitoring of MW-1 is required by Waste Discharge Requirements Order No. 99-123. The groundwater monitoring program for MW-7 and any wells installed subsequent to the issuance of this MRP, shall follow the schedule below. Sample collection and analysis shall follow standard EPA protocol. EPA Analytical Max. Detection Sampling Constituents Method Limits Frequency Total Trihalomethanes 502.2 0.5 µg/1 Annually, ' For nondetectable results. 2 Wells shall be sampled annually during the fourth calendar quarter.