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SYATE�OF�CALIFORNIA-Environmental Protectio(ftncy PETE WILSON,Govemor <br /> CALIFORNIA REGIONAL WATERQUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> 3443 Routier Road, Sude A <br /> Sacramento,CA 956273038 Q <br /> PHONE:(916)255.'000 & <br /> FAX(916)255-3015 <br /> 3 February 1997 <br /> Ms. Linda Gonsalves <br /> Pacific Gas and Electric Company <br /> 375 North Wiget Lane, Suite 130 <br /> Walnut Creek, CA 94598-2412 <br /> WORK PLAN TO CONDUCT PRELIMINARY SOIL AND GROUNDWATER INVESTIGATIONS, <br /> ELEVEN PACIFIC GAS AND ELECTRIC SITES THROUGHOUT THE CENTRAL VALLEY <br /> I have reviewed the December 1996 Workplan to Perform Soil and Groundwater Preliminary <br /> Environmental Assessment at Eleven PG&E Gas Dehydrator Stations throughout the Central Valley <br /> area and the 30 January 1997 Addendum to the Work Plan. Figure 1 (attached) shows the locations of <br /> the 11 sites. The work plan describes the historical activities at each of the sites and proposes to drill <br /> borings at each site in order to sample soil and groundwater. Temporary wells will be constructed or a <br /> hydropunch-type sampling device will be used to obtain grab groundwater samples at each boring <br /> location. Soil and groundwater will be analyzed for total petroleum hydrocarbons measured as gasoline <br /> and diesel, benzene, toluene, ethylbenzene, xylenes and glycol compounds. <br /> The work plan is hereby approved. In accordance with the proposed schedule, technical reports for the <br /> 11 sites will be submitted by 16 May 1997. Please provide at least 72 hours notice prior to field <br /> activities in case I wish to observe the field methods or obtain split samples. <br /> If you have any questions,you may call me at (916) 255-3077. <br /> L:::D <br /> J?EL WEISS <br /> Associate Engineering Geologist <br /> JMW:jmw/isb <br /> Attachment <br /> cc: Glenn County Department of Environmental Health Services,Willows <br /> Sacramento County Department of Environmental Management, Hazardous Materials Division, <br /> Sacramento <br /> San Joaquin County Department of Public Health Services, Stockton <br /> Solano County Department of Environmental Health Management, Fairfield <br /> Sutter County Department of Environmental Health , Yuba City <br /> Tehama County Department of Environmental Health, Red Bluff <br /> Yolo County Department of Environmental Services,Woodland <br />