Laserfiche WebLink
i <br /> y.. <br /> � + �,� cau_ra p(,�iy�Y:�t1b7 IrPi�ii6 <br /> .t Rla�t h+mp,irn If {.� 1•, Er7t'irwlnlerrLri Snlulirrn; <br /> r -0 JJJyyS <br /> Thrrru�41?Appfirr!Srirrrrer, <br /> SI(A Gold C,11111)1)6 v,tiuite 200 ; � fl., rngincrring 4Cnn0rutlirm <br /> R.11 I(h++Cordot,.i,( A 4)67 l l'i <br /> s <br /> I'honc f9IGI pjr,°-Ir(,i)11 <br /> ENV ONMENTAL li AUN <br /> 1Ax 19 110 tt _-l,()tttl PER1v1ITiSEPVICEfi <br /> August 5, 1991 <br /> Mr. Chuck Carmel <br /> ARCO Products Company <br /> P.O. Box 5511 <br /> San Mateo, California 94402 <br /> Subject-. Work Plan for an Environmental Investigation at ARCO Service Station No. <br /> 6100, 25775 South Patterson Pass Road, Tracy, California. <br /> Mr. Carmel. <br /> At :he request of ARCO Products Company (ARCO), Applied GeoSystems, Inc./RESNA <br /> Industries (Applied GeoSystems) is presenting this work plan for additional work at the <br /> subject site. T'Ie site is on the northwest corner of Patterson Pass Road and Interstate 5 <br /> 80. <br /> approximately 1,000 feet southwest of the California Aquiduct,as shown on the Site Vicinity <br /> Map (Plate 1). The approximate locations of the underground storage tanks and other <br /> selected site features are shown on the Generalized Site Plan (Plate 2). <br /> Previous Work <br /> Applied GeoSystems conducted an initial investigation at the site to evaluate soil for <br /> possible gasoline hydrocarbons before the removal of underground gasoline-storage tanks <br /> (_Applied GeoSystems,July 16, 1990,Report No.30041-1). On June 6 through 8,1990,three <br /> soil borings were drilled near the underground storage tanks (borings B-1 through B-3)and <br /> two soil borings were drilled in the area of the new tank cavity (B-4 and B-5) (Plate 2). <br /> Hydrocarbons were detected in soil near the existing tank cavity and in the area of the new <br /> tank cavity at concentrations that warrant remediation. Laboratory results are shown on <br /> Table 1. <br /> Ground water was not encountered during drilling of the soil borings. According to the San <br /> Joaquin County Public Health Services, Environmental Health Department(SJCPHS), the <br /> depth to ground water at the site is greater than 100 feet below grade. <br /> 0619ccar <br /> 30041-xw <br /> i <br />