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BLAINE 985 TIMOTHY DRIVE <br /> SAN JOSE, CA 95133 <br /> (408)995-5535 <br /> TECH SERVICES INC. FAX (408)293-8773 <br /> July 19, 1995 <br /> Brett Hunter <br /> Chevron U.S.A. Products Company <br /> P.O. Box 5004 <br /> San Ramon, CA 94583-0804 <br /> 2nd Quarter.1995 Monitoring at 9-7780 <br /> Second Quarter.1995 Groundwater Monitoring at <br /> Chevron Service&St on-Nu fibi6 r*7780 <br /> 3246 East Fit m4o it:Siriet' <br /> Stockion; CA <br /> Monitoring Performed on June 15, 1995 <br /> Groundwater Sampling Report 950615-M-3 <br /> This report covers the routine quarterly monitoring of groundwater wells at this Chevron facility. <br /> Blaine Tech Services, Inc.'s work at the site includes inspection, gauging,evacuation, <br /> purgewater containment, sample collection and sample handling in accordance with standard <br /> procedures that conform to Regional Water Quality Control Board requirements. <br /> Routine field data collection includes depth to,yyuteri total'welldepth,._tbi�;koi99,:pf any separate <br /> immiscible l'aygr, water 010mn voiume,calcula:tcd volume of a'thieeTMease volume.purge, <br /> elapsed"evacuation time;total volume of water removed;and,siatdUd water parameter <br /> instrument readings. Sample material is collected,coutaine_d;stbi'�d and transported to the <br /> laboratory in conformance with EPA standards. Purgewat�r s :.like`wise, eellected and <br /> transported to Chevron's Richmond Refinery for•disposal: ''` ' 3: . i'` <br /> Basic field information is presented alongside analytical values excerpted from.the laboratory <br /> report in the cumulative table of WELL DATA AND ANALYTICAL RESULTS. The <br /> table also contains new groundwater elevation calculations taken from the computer plotted <br /> gradient map which is located in the Professional Engineering Appendix. <br /> i <br /> Blaine Tech Services,Inc. Report No. 950615-M-3 2nd Q-1995 Monitoring at Chevron 9-7780 <br /> w. - <br />