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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD . CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. R5-2004-0828 CALIFORNIA WATER CODE SECTION 13267 FOR HERMAN & HELEN'S MARINA 15135 EIGHT MILE ROAD STOCKTON, SAN JOAQUIN COUNTY Herman &Helen's Marina(Discharger) at 15135 Eight Mile Road in Stockton(site) is near the Little Connection Sloughand is bounded to the east and north by agricultural fields, Eight Mile Road to the south, and a levee to the west. The site has two aboveground storage tanks, associated above- and below-ground piping, and 14 wells. In October 1991, five underground storage tanks (USTs) were removed, two of them without San Joaquin County Environmental Health Department(SJCEHD) witness or inspection. One of the three USTs inspected by SJCPS/EHD had a hole in the bottom and two site investigations were performed to delineate the resulting pollution. Regional Board staff and the SJCEHD determined that the petroleum hydrocarbon pollution was from aboveground storage tanks being operated at the site. This pollution impaired the beneficial use of this water resource. Groundwater is first encountered at about 20 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 plumes and determine whether remediation efforts are effective. Existing data and information about the site show the presence of various chemicals, including total petroleum hydrocarbons (TPH) as gasoline, TPH as diesel, benzene, toluene, ethylbenzene, xylenes, methyl tertiary butyl ether(MTBE), tertiary butyl alcohol (TBA), tertiary amyl methyl ether(TAME), ethyl tertiary butyl ether (ETBE), and methanol, 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. 5-01-835,which was issued on 5 June 2001. Prior to construction of any new groundwater monitoring or extraction wells, and prior to destruction of any groundwater monitoring,or extraction wells, the Discharger shall submit plans and specifications to the Board for review nd 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 13 monitoring wells and one extraction well. The groundwater monitoring program for the 13 monitoring wells, one extraction well, four surface water sampling locations identified as DDN,DDS, IDCE, and IDCW, and any wells installed subsequent to the issuance of this MRP, shall follow the schedule below. Monitoring wells with free phase petroleum product or visible sheen shall be monitored, at a minimum, for product thickness and depth to water. Sample collection and analysis shall follow standard EPA protocol.