SITE INFORMATION AND CORRESPONDENCE

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Applied GeoSystems 4191-E P v nF y Q 'n t" to 95826 (916) 452-2901 (f • FREMONT • IRVINE • HOUSTON • BOSTON •' gALAT 990• CULVER CITY • SAN JOSE PERMIT/SERVICES October 12, 1990 1005LCOT AGS 38048-4 Ms. Laurie Cotulla San Joaquin Public Health Services P.O. Box 2009 Stockton, California 95201 Subject: Status Letter of Soil Investigation at ARCO Service Station No. 760, 225 South Cherokee Lane, Lodi, California. Ms. Cotulla: At the request of ARCO Products Company (ARCO), Applied GeoSystems is submitting this letter in response to your October 1, 1990, letter to Mr. Kyle Christie of ARCO in which you stated that the San Joaquin Public Health Services had not received a status report for work we conducted at the subject site (Site Code 1314). Your reference code for this site is Site Code 1314. A status letter reporting our progress on the investigation was Federal Expressed to your office on September 18, 1990 (Applied GeoSystems, Report No. 38048-4, September 17, 1990). This status letter also included a request for a permit to drill near the existing and proposed gasoline tank cavities in the locations shown in our Work Plan, dated April 23, 1990. Ms. Darlene Reuss of your staff issued a permit to drill (permit No. 90-2583) to Wayne Drilling of Lincoln, California, on September 25, 1990. The drilling operation began on October 5, 1990. We stated in our September 1990 letter that a work plan to delineate appropriate hydrocarbons or a status letter stating the date we expect to issue the PAR would be submitted to your office approximately 3 months after the completion of the tank replacement. We now understand from ARCO personnel that they have changed their tank replacement schedule from the fall of 1990 to the first half of 1991. At the request of ARCO, Applied GeoSystems will submit a report on our work near the former waste-oil cavity and the gasoline tank cavity by January 1991.