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PROJECT R O E I V E D <br /> ROUTE: ❑ ❑ <br /> FILE NO. MAY 2 3 1997 <br /> a/1 Glenwftflngs-Holdingis, Inc. GEOMATRIX CONSUL fAN,S <br /> ` FRESNO/ A subsidiary of Occidental Petroleum MEMO <br /> TO: Tim Souther DATE: May 16, 1997 <br /> FROM: Patrick J. Garrity COPY: D. Andrasko (TreaTek) <br /> G. Dworzanski (GSH) <br /> SUBJECT: Analytical Results and QA/QC Review <br /> Investigative Soil Sampling <br /> Charter Way Site <br /> Stockton, California <br /> May 1997 <br /> Four soil samples were collected at the Charter Way Site on May 8 and 9, 1997. The <br /> samples were submitted for volatile organic compounds (VOCs) analysis using EPA <br /> Method 8260 referenced from "Test Methods for Evaluating Solid Waste, <br /> Physical/Chemical Methods", Third Edition, September 1986 and subsequent revisions. <br /> All sample results were judged acceptable and are summarized in Table 1. <br /> All holding time criteria were met. All spike recoveries were within laboratory control <br /> limits for the blank spike demonstrating acceptable accuracy for the methodology. All <br /> surrogate recoveries were within laboratory control limits demonstrating acceptable <br /> sample-specific analytical efficiency. VOCs were non-detect in the associated method <br /> blank extracted with the investigative samples. <br /> All sample and QA/QC sample results were acceptable. No qualification of the data <br /> was necessary. <br /> The laboratory data to support the analytical results and QA/QC review is available <br /> upon request. <br /> If you have any questions, please call me at(716) 773-8309. <br /> Patrick J. Garrity <br /> Project Manager <br /> PIG/.,/0328/2 <br />