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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. R5-2002-0810 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 trihalomethane (THM)pollution. 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. Groundwater is at about 65 feet below ground surface. This Monitoring and Reporting Program (MRP) is issued pursuant to Section 13267 of the California Water Code and is necessary to delineate groundwater pollutant plum's and determine whether remediation efforts are effective. Existing data and information about the site shows the presence of various chemicals, including chloroform and total dissolved solids, emanating from the property under the control of the Discharger. 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. 5-01-873, which was issued on 8 November 2001. Prior to construction of any new 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 eight monitoring wells and one extraction well. The groundwater monitoring program for wells MW-1, MW-7, and any wells installed subsequent to the issuance of this MRP, shall follow the schedule below. The Discharger shall properly abandon the other seven wells. Sample collection and analysis shall follow standard EPA protocol. EPA Analytical Max. Detection Sampling Constituents Method Limit' Frequency Depth to Groundwater --- --- Semi-annuallY2 Total Trihalomethanes 502.2 0.5 µg/1 Semi-annually2 Total Dissolved Solids 160.1 10 mg/1 Semi-annuallyz ' For nondetectable results. 2 Wells shall be sampled semi-annually during the first and third calendar quarters.