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l <br /> B R O W N A N D rTil <br /> CALDWELL � � <br /> T <br /> February 29, 1996 <br /> Mr Brian Cobb <br /> E-Z Serve Petroleum Marketing Company of California <br /> 2550 N Loop West, Suite 600 <br /> Houston, Texas 77292-2021 11-3003-05 <br /> Subject Fourth Quarter 1995, Groundwater Monitoring Report <br /> Former E-Z Serve Station #100966 <br /> 2537 Waterloo Road, Stockton, California <br /> Dear Mr Cobb: <br /> This letter report summarizes the fourth quarter groundwater monitoring activities conducted by <br /> Brown and Caldwell at 2537 Waterloo Road, Stockton California (Site), on December 11, 1995 <br /> The work performed at the Site included collecting depth-to-water measurements, purging, and <br /> . sampling eight wells, and submitting the groundwater samples to an analytical laboratory for <br /> analysis. Field work was performed following the procedures outlined in Attachment A. <br /> Field and Analytical Methods <br /> Init><ally, depth-to-water and free product measurements were collected from the eight wells by <br /> a Brown and Caldwell field technician using an oil-water interface probe The wells were then <br /> purged of a minimum of three well volumes, or until evacuated, using a submersible pump. <br /> After purging, each monitoring well was sampled by the Brown and Caldwell field technician <br /> using a disposable bailer. Samples were then transferred to appropriate laboratory-supplied <br /> containers, placed in a cooler containing crushed ice, and submitted under appropriate chain of <br /> custody to CKY Incorporated (CKY) for analysis of total petroleum hydrocarbons as gasoline <br /> (TPHg) and benzene, toluene, ethylbenzene, and total xylenes (BTEX) following EPA Methods <br /> 8015 Modified and 8020, respectively CKY is located in Torrance, California and is certified <br /> by the State of California Department of Health Services for analysis of hazardous materials. <br /> Groundwater sample collection records and chain-of-custody documentation for this quarterly <br /> sampling event are included in Attachment A <br /> OE uJUF067Qr;iu..r[+Pn1oo966urrt ins wPs <br /> wrronmerrtar En(Ineerrng Ana Consulting a,,arvr+cal 5erv�ces <br /> P 0 Bo\ 8 0 4) « %LILT CREEI. C -1 94,96 1220 <br /> 3480 BLSKIRA - % F\lF PLE \Sa�T HILL CA 94,23 4342 <br /> I �101937 9010 F ) 1019, i 9026 <br />