Laserfiche WebLink
, R <br /> *�U GROUNDWATER <br /> ❑❑ TECHNOLOGY, INC. 1401 Halyard Dave,Suite 140,West Sacramento,CA 9569L(916)3724704 <br /> FAX(916)372-8781 <br /> May 26, 1992 Project No 02030 0163 <br /> Mr Clint B Rogers <br /> Chevron U S A Products Company rt <br /> 2410 Camino Ramon ' <br /> L <br /> San Ramon, CA 94583-0804 ' ° <br /> J U L 0 8 1992 <br /> RE QUARTERLY MONITORING AND SAMPLING ACTIVITIES ENVIRONMENTAL HEALTH <br /> CHEVRON SERVICE STATION NO 9-0342 PERMIT/SERVICS <br /> 1347 SOUTH ELDORADO <br /> STOCKTON, CALIFORNIA <br /> Dear Mr Rogers <br /> Groundwater Technology, Inc submits this letter as a summary of quarterly groundwater <br /> monitoring and sampling data collected on May 4, 1992 The four groundwater monitoring <br /> wells were gauged to determine depth to groundwater (DTW) and to check for the presence of <br /> separate-phase petroleum hydrocarbons A potentiometric surface map (Figure 1) and a <br /> summary of groundwater monitoring data (Table 1) are included After measuring DTW, <br /> monitoring wells MW-3 and MW-4 were purged and sampled Monitoring wells MW-1 and <br /> MW-2 are sampled on a semi-annual basis The groundwater samples were analyzed for <br /> dissolved benzene, toluene, ethylbenzene and xylenes (BTEX), and total petroleum <br /> hydrocarbons-as-gasoline (TPH-G) Results of the chemical analyses are summarized in Table <br /> 1 Laboratory reports and chain-of-custody manifests are included in Attachment A All purge <br /> water generated during the sampling process was collected in a Department of Transportation <br /> (DOT)-approved purge water trailer and transported for recycling to the Chevron refinery in <br /> 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 /> Ground r Technolog nc Groundwater Technology, Inc <br /> Watt n/S mit Reviewed/Approved by <br /> J�IIES W GRASfY E K SIMONIS, R G <br /> Znvironmental Geologi t Senior Environmentalologtst <br /> Project Manager r^2�i •�� �w0)if <br /> - a <br /> JWG/EKS rc <br /> No 4 X22 iLp` t <br /> Attachments y <br /> 0163QTR2LTR <br /> Offices throughout the US Canada and Overseas Jig;. <br />