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Bc Brown and Caldwell <br /> 3480 Buskirk Avenue E N VIRO NI-iN TAA HEALTI <br /> Pleasant Full CA 94523-4342 nF '�;� <br /> P 0 Box 8045 <br /> Walnut Creek CA 94596-1220 95 JUL 31 AM If: 10 <br /> (510)937-9010 <br /> FAX(510) 937 9026 <br /> r <br /> July 25, 1995 <br /> - <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 11-1565-0411 <br /> Subject: Second Quarter 1995, Groundwater Monitoring Report T - - <br /> Former E-Z Serve Station #100878, <br /> 1012 West Yosemite Avenue, Manteca, California <br /> Dear Mr. Cobb <br /> Brown and Caldwell conducted the second quarter 1995, groundwater monitoring event at E-Z <br /> Serve Petroleum Marketing Company of California's (E-Z Serve) Former Station #100878, <br /> 1012 West Yosemite Avenue, Manteca, California, on June 22, 1995. The work performed <br /> at the subject site included collecting depth-to-groundwater measurements from eight <br /> groundwater monitoring wells, purging and sampling eight wells, and submitting the <br /> groundwater samples to Southern Petroleum Laboratories Inc. (SPL), an analytical laboratory <br /> located in Houston, Texas certified by the State of California Department of Health Services <br /> for analysis of hazardous materials. Field work was performed following the procedures <br /> outlined in Attachment A. <br /> Field Activities <br /> Depth-to-water measurements were collected using an oil-water interface probe and a clear <br /> acrylic bailer was used to check for free product A minimum of three well volumes was <br /> purged from each of the monitoring wells pnor_to sampling. Samples were collected from <br /> each of the monitoring wells, transferred to the appropriate sampling vials, and submitted to <br /> SPL under appropriate chain of custody. In addition, a duplicate sample was collected from <br /> Well-MW-2 and a field blank was prepared prior to sampling Well MW-2. Samples were <br /> analyzed by SPL, Inc. for total petroleum hydrocarbons as gasoline (TPHg), benzene, <br /> toluene, ethylbenzene, and xylene isomers, following Environmental Protection Agency <br /> Methods 8015 modified and 8,020. <br /> 1 <br /> , 1 <br /> I Swianmary of Findings <br /> k <br /> _ <br /> S 101A3A31E.U"156SWIL1'IM10097SWril61994 WPS <br /> HPLNWM <br /> I I II. <br /> t , <br />