Laserfiche WebLink
AppliedGea5yslems he <br /> A RESNA Company �---w� <br /> Environmental Solutions <br /> Through Applied Science, <br /> 3164 Gold Camp Drive, Suite 200 Engineering&Construction <br /> Rancho Cordova, CA 95670 <br /> Phone (916) 852-6690 <br /> FAX (916) 852-6688 <br /> March 20, 1992 <br /> Mr Chuck Carmel <br /> ARCO Products Company <br /> P O Box 5811 <br /> San Mateo, California 94402 <br /> i Subject Status of Environmental Investigation at ARCO Service Station No 6100, <br /> 25775 South Patterson Pass, Tracy, California, and Addendum to Work Plan <br /> Mr Carmel <br /> i This letter report summarizes the status of the environmental investigation performed by <br /> RESNA Industries (RESNA, formerly Applied GeoSystems) for ARCO Products Company <br /> (ARCO) and presents an addendum to the work plan for additional work at the subject site <br /> The site is near the northwest corner of the intersection of South Patterson Pass Road and <br /> Interstate 5, as shown on the Site Vicinity Map (Plate 1) The approximate locations of the <br /> tanks and other selected site features are shown on the Generalized Site Plan (Plate 2) <br /> PREVIOUS WORK <br /> Pre-Tank Replacement Soil Invests ation <br /> Applied GeoSystems was at the site on June 6 through 8, 1990, to observe drilling of five <br /> soil borings (B-1 through B-5) to evaluate soil for hydrocarbons before the removal of the <br /> tanks (Applied GeoSystems, July 16, 1990) The locations of the soil borings are shown on <br /> Plate 2 s Soil samples collected during drilling were submitted to the laboratory for analysis <br /> of hydrocarbons The concentrations of hydrocarbons detected in soil samples are presented <br /> in Table 1 Gasoline hydrocarbons were detected to 45 feet in boring B-1, 20 feet in boring <br /> B-2, and 10 feet in boring B-3 Gasoline hydrocarbons were detected to 20 feet in soil from <br /> boring B-4 and to 30 feet in boring B-5 <br /> Under round Storage Tank Re lacement <br /> Roux Associates (Roux) conducted an investigation at the site from November 1, 1990, to <br /> February 19, 1991, in conjunction with the removal and replacement of underground storage <br /> tanks and associated product-delivery lines (Roux, May 29, 1991, Report No AR06776W) <br /> During that investigation, five single-walled underground storage tanks were removed from <br /> R <br /> � 30041-2 <br /> I <br />