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JUN-05-98 13:11 Frum:LIRS GPEIP'R SF 4153981904 T-358 P.01/0T Job-132 <br /> NW ,./ URS Grelner,Inc. <br /> 1 O CElrfornia Street,Swte soo <br /> San Francisco,C44ornia 94111 4529 <br /> - Telephone.(415)774-?700 <br /> F (415) <br /> Officee in Principat Coes <br /> Nahavlwvlg <br /> June 5, 1998 <br /> Ms. Letitia Briggs <br /> San Joaquin County Public health Services <br /> Environmental Health Division <br /> 304 E- Weber Avenue.,Third Floor <br /> Stockton,CA 95202 <br /> TRANSMITTAL OF PIPELINE AND DISPENSER ANALYTICAL RESULTS— USPS <br /> STOCKTON P&DCNMF SITE <br /> 3131 hrc-dt, R01 , <br /> Dear Letitia: <br /> Please find attached, one copy of the analytical results for the fuel product pipeline and dispenscx <br /> samples collocted at dw above-listtA site. As you can see from the results, there was some residual <br /> fuel product in the soil/pea gravel sample collected from beneath each dispenser. These results are <br /> summarued on page 3 of 10. In addition,one detection of MTBE at 0-340 mg/kg was found in the <br /> pipeline sample collected from the location adjacent to the diesel dispenser. If you recall, this <br /> location is where the two sets of pipelines(unleaded and diesel), run alongside one another in the <br /> direction of the tanks. The area where these samples were collected has been grouted to the surface <br /> with concrete. <br /> The next step is to receive the oil tank sample results, which will be forwarded to you as soon as <br /> they are available. We are still awaiting a letter from your office providing direction to collect <br /> additional samples from beneath the former USTs and the concrete pad still in place. At this time, <br /> we have entered into an agtccmont with Spectrum Drilling of Stockton, to drilT six boreholes using <br /> a hollow stem auger rig, to collect the samples. The date of this sampling is tentatively scheduled <br /> for the week of June 22, 1998, Please send the USPS a letter indicating a request from the County <br /> to conduct this sampling. Send the letter to: <br /> Mr. Amit Bhatia, Project Manager <br /> United States Postal Service <br /> Pacific Facilities Service Office <br /> 395 Oyster Point Blvd., Suite 225 <br /> South San Ftnncisco,CA 94099-0300 <br /> If you have any questions please don't hesitate to call me at 415/774-2781. <br /> Sincerely, Past-Ir Fax(Vote 7671 D0t0 S oa°aes► <br /> coroep ATG l-1 oa C$�-5 <br /> URS GREINERr INC. Ze cl d o 6� °ne" 2 <br /> Chris A.Nelson Fay° Za -d 3 a <br /> Project Manager <br /> L15JCPIUnnl'tesults/(I(,0598.at Pagc I <br />