Laserfiche WebLink
GROUNDWATER <br /> � � <br /> TECHNOLOGY, INC. 1401Halvardl)nve Sute140 West Sacramento CA95691 (916)372-4700 <br /> FAX(916)372-8781 <br /> December 2, 1992 Project No 02020-2823 <br /> Mr Brett L Hunter <br /> Chevron U S A Products Company 49idQk44tk <br /> 2410 Camino Ramon fez— <br /> San Ramon, CA 94583-0804 <br /> RE. QUARTERLY MONITORING AND SAMPLING ACTIVITIES <br /> CHEVRON SERVICE STATION NO 9-1848 <br /> 1257 W YOSEMITE AVENUE �vp— <br /> MANTECA, <br /> CALIFORNIA <br /> Dear Mr Hunter <br /> /Groundwater Technology, Inc submits this letter as a summary of qrly groundwater monitoring <br /> and sampling data colleted at the above-referenced site on Octobe7/71992 The three on-site <br /> undwater mon�t w l were gauged to determine depth to groundwater (DT1N) and to check <br /> for the presence of separate-phase petroleum hydrocarbons A potentiometric surface map (Figure <br /> t� 1) and a summary of groundwater monitoring data (Table 1) are included After measuring DTW, <br /> each monitoring well was purged and sampled The groundwater samples were analyzed for <br /> dissolved benzene, toluene, ethylbenzene and xylenes (BTEX), and total petroleum hydrocarbons-as- <br /> gasoline (fPH-G) Results of the chemical analyses are summarized in Table 1 Laboratory reports <br /> and chain-of-custody manifests are included in Attachment A All purge water generated during the <br /> sampling process was collecteed a Department of Transportation (DOT)-approved purge water <br /> trader and transported for recyg to the Chevron 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 /> MES W GRASTY, R A E K SIMONIS, R G <br /> Environmental Geolog t Senior Environmen <br /> Project Managerj� <br /> • <br /> JWG/EKS rb <br /> '• Enclosure <br /> 2823RTR2 LTR OL 4422 <br /> ti4 <br /> Offices throughout the L 5 Canada and Overseas <br />