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GOT i 3 '93 <br /> ��❑ <br /> ' GROUNDWATER <br /> LIE] <br /> TECHNOLOGY, INC. <br /> 140I Halyard Drive.Suite 140,West Sacramento,CA 95691.(916)'3'724700_ <br /> FAX 1916}372-8781 <br /> October 12, 1993 Project No. 02070 4367 <br /> Mr. Brett L. Hunter REAft E I V Em Um <br /> Chevron U.S.A. Products Company <br /> ;�Y . <br /> 2410 Camino Ramon <br /> San Ramon, CA 94583-0804 FNVIRONMENTAL MLALTH <br /> RE: QUARTERLY MONITORING AND SAMPLING ACTIVITIES PERMIT/SERVICES <br /> CHEVRON SERVICE STATION NO. 9-0302 <br /> 6421 PADDOCK PLACE 7e� <br /> LODI, CALIFORNIA oq,5-0 <br /> Dear Mr. Hunter: <br /> Groundwater Technology, Inc. submits this letter as a summa of rte/three oring <br /> and sampling data collected at the above-referenced site on ugust 30, 1 <br /> groundwater monitoring wells at the site were gauged to determine depth to groundwater (DTVII) and <br /> • to check for the presence of separate-phase petroleum hydrocarbons. A potentiometric surface <br /> map (Figure 1) and a summary of groundwater monitoring data (Table 1) are included. After <br /> measuring DTW, each monitoring well was purged and sampled. The groundwater samples were <br /> analyzed for dissolved benzene, toluene, ethylbenzene and xylenes (BTEX), total petroleum <br /> hydrocarbons-as-gasoline (TPH-G), and organic lead. Results of the chemical analyses are <br /> summarized in Table 1. Laboratory reports and chain-of-custody manifests are included in <br /> Attachment I. All purge water generated during the sampling process was collected in a Department <br /> of Transportation (DOT)-approved purge water trailer and transported for recycling to the Chevron <br /> refinery in Richmond, California. <br /> Groundwater Technology, Inc. is pleased to assist Chevron on this project. If you have any <br /> questions or comments please call our West Sacramento office. <br /> Sincerely, <br /> Groundwater Technology, Inc. Groundwater Technology, Inc. <br /> Written/Submitted by Reviewed/Approved by <br /> BRUCE H. EPPLER E. K. SIMONIS, R.G. <br /> Environmental Geologist Senior Environme 961 <br /> Project Manager vti5 PS tED)k S C1. <br />!• PR o <br /> SKY/BH�/EKS:rz _Z <br /> Attachments W No.4422 t" <br /> 4367QTR3.LTR <br /> vim, �A <br /> Offices throughout the U.S.,Canada and Overseas � 'per ,ALJ 0 <br />