ARCHIVED REPORTS_ROY'S AUTO - HISTORICAL (2)

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FROM Ground ce-o Analysis PHONE NO. 209 952 9892 Apr. 1-7 1997 02:19FM F2 GROUND ZERO ANALYSIS, INC. 2291 W.March lAm, Suite 127D Stockton, Caliteraia 95207 Wephone. (2119)952.3481 Fmimile: (209) 952-9892 n April 18, 1997 't1 U 1y t. Ms. Lisa Brown, Esq. Office of the District Attorney P.O. Box 990 Stockton, CA 95201 Subject; Report of Investigation - Soil Sampling at Roy's Towing 3570 East Miner Avenue, Stockton, California Transmittal of Report and Summary of Results Dear Ms. Brown: Enclosed is your copy of our Report of Investigation concerning the recent soil and septic tank sampling at the subject property. The investigative procedures and results as well as our conclusions and recommendations are briefly summarized below, A copy of the report has also been submitted to Mr. Doug Wilson with San Joaquin County Public Health ServiceslFaivironmental Health ]division (PHSlEHD) for his review and comment. PURPOSE OF INVESTIGATION (around Zero Analysis, Inc. ("GZA") was retained by the responsible party to conduct a soils quality evaluation at the subject property. The purpose of the work was to investigate the property for the presence of contamination, Per GZA's approved Workplan, szunpling focused on areas of contamination identified during previous investigations; the sump and septic tank beneath the building and the leach lines and pit south of the building and; random sampling in areas of the property previously uninvestigated. SAMPLING METHODS During the week of February 24, 1497, GZA personnel collected 23 soil samples at various locations on the property. The locations of the sampling points were approved by PIISIEHD. Sampling was conducted under the supervision of PHSIEHD personnel. Backhoe trenches and hand auger borings were used to collect soil samples from the depths of 1 foot and 5 feet at most locations. Samples from beneath the sump and leachline were collected