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4 <br /> BROWN AND <br /> C A L D W E L L <br /> December 14, 1995 <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 11-3003-03 <br /> Subject: Third Quarter 1995, Groundwater Monitoring Report <br /> Former E-Z Serve Station #100878 <br /> 1012 West Yosemite Avenue, Manteca, California <br /> Dear Mr. Cobb. <br /> Brown and Caldwell conducted the thud quarter 1995, groundwater monitoring event at E-Z <br /> Serve Petroleum Marketing Company of Cahforma's (E-Z Serve) Former Station #100878, <br /> 1012 West Yosemite Avenue, Manteca, California, on September 15, 1995 The work <br /> • performed at the subject site included collecting depth-to-groundwater measurements from <br /> eight groundwater monitonng wells, purging and sampling eight wells, and submitting the <br /> groundwater samples to CKY Inc. (CKY), an analytical laboratory located in Torrance, <br /> California certified by the State of California Department of Health Services for analysis of <br /> hazardous materials Field work was performed following the procedures outlined in <br /> 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, except for well MW-3, prior to sampling. Well <br /> MW-3 dried out during the purging process. Samples were collected from each of the <br /> monitoring wells, transferred to the appropriate sampling vials, and submitted to CKY under <br /> appropriate chain of custody In addition, a duplicate sample was collected from well MW-2 <br /> and a field blank was prepared prior to sampling well MW-2.' Samples were analyzed by <br /> CKY Inc. for total petroleum hydrocarbons as gasoline (TPHg), benzene, � toluene, <br /> ethylbenzene, and xylene isomers, following Environmental Protection Agency Methods 8015 <br /> modified and 8020. <br /> I I <br /> I <br /> �4 01113/g1E.v.MI5'OV ELLYRnnIOMUUaa-1995wrs I <br /> ! I II IIS HPL&mwM <br /> Envlronmentel Engineering And Consulting Analytical Services <br /> P 0 Box 8045 WAL% T CREEK CA 94596 1220 <br /> 3480 BUSKIRK AtiFNUE PEE1SANT HILL CA 94523 4342 <br /> (510) 937 9010 F,x (510) 937 9026 ! <br /> 1 <br /> I� dill o' ! II I�'I' ,1 Ek i ! <br /> l l I I I , I l 1� <br />