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r -- <br /> t <br /> 1 .. <br /> B[: Brown and Caldwell <br /> G� 3480 Buskirk Avenue - <br /> Pleasant Mill,CA 94523-4342 <br /> P 0 Bax 8045 <br /> Walnut Creek,CA 94596-1220` <br /> _ (510)937-9010 - <br /> FAX(510) 937-9026 APR 24 1995 ' <br /> Apnl 20, 1995 ENVIRONMENTAL HEALTH l <br /> - PERMITISERVICES ` <br /> s <br /> J <br /> Mr. BnanCobb' <br /> E-Z'Serve Petroleum Marketing Company of California - _ <br /> 2550 N. Loop West, Suite 600 <br /> Houston, Texas 77292-2021 _ 11-1565-04/1 <br /> Subject: Fust Quarter 1995, Groundwater Monitoring Report y <br /> Former E-Z Serve Station #100878, <br /> 10,12 West Yoserrute Avenue, Manteca, California - <br /> Dear Mr. Cobb- <br /> Brown and Caldwell conducted the fust 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 March 24, 1995."The work performed <br /> ll at the subject site included collecting depth-to-groundwater measurements from eight y <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 Toxic Substance <br /> Control for analysis of hazardous materials. '' Field work was performed following the_ <br /> procedures outlined in Attachment A. _ <br /> Field Activities _ <br /> 4 <br /> Depth-to-water measurements were collected using an oil-water interface probe and a clear - <br /> acrylic barter was used to check for free product: A minimum of three well volumes was <br /> purged from each of the monitoring wells prior to-sampling, except for Well MW-3, which <br /> dried out during the purging process ,Samples were collected from each of the monitonng <br /> wells, transferred to the appropriate sampling vials, and submitted to SPL under appropriate <br /> r chain of custody. In addition, a duplicate sample was collected from Well MW-2 and a field <br /> blank was prepared prior to sampling Well MW-2 A trip blank was prepared by SPL and <br /> accompanied-the samples during shipping. Samples were analyzed by SPL, Inc for total <br /> petroleum hydrocarbons as gasolene (TPHg), benzene, toluene, ethylbenzene, and xylene <br /> isomers, following Environmental Protection Agency Methods 8015 modified and 8020 <br /> — i J <br /> 011 kE VJM1565MQTUyRM10ffMWrH-19441 VYPS <br /> i <br /> if I I <br /> t <br /> lip <br /> 1 'I II i fill 1 Ili i I I h1 VI l'� 1 til II "l I III ell ill �I I II l�' I l ' I' gf11 I til ill` l4 I I 1' ,il, i II II I'ly I II <br />