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BC Brown and Caldwell <br /> C�� 3480 Buskirk Avenue _ '.'" fit 'I �L HEAI-TIS <br /> a'�t�i i_F aria.. <br /> Pleasant Hill CA 94523-4342 ' 11 �, <br />., P 0 Box 8045 - <br /> Walnut Creek CA 94596-1220 195 JUL 3 1 AM I': 06 <br /> (510) 937-9010 <br /> FAX (510)937-9026 <br /> July 27, 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 11-1567-0411 <br /> Subject: Second Quarter 1995, Groundwater Monitoring Report <br /> Former E-Z Serve Station #100966 <br /> 2537 Waterloo Road, Stockton, 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 #100966, <br /> 2537 Waterloo Road, Stockton, California, on June 20 and 21, 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 Iaboratones Inc. (SPL), an analytical laboratory <br /> located in Houston, Texas and certified by the State of California Department of Health <br /> Services for analysis of hazardous materials. Field work was performed following the <br /> procedures 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 the presence of free product. Free product was not <br /> identified in any of the monitoring wells. A minimum of three well volumes was purged from <br /> each of the monitoring wells prior to sampling. Samples were collected from each of the <br /> monitoring wells, transferred to the appropriate sampling vials, and submitted to SPL under <br /> appropriate chain-of-custody. In addition, a duplicate sample was collected from Well MW 1 <br /> and a field blank was prepared prior to sampling Well MW-1. Samples were analyzed by <br /> SPL for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, <br /> and xylene isomers, following Environmental Protection Agency Methods 8015 modified and <br /> 8020. - <br /> r T <br />. oinaWWV"15 rJQTRLYRM1 9W1Sr 1995 WFS <br /> NPla�xm <br /> t - <br />