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14D <br /> Sequoia 404 N. ,CA Lane <br /> Walnut Creek,CA 94598 <br /> 1%ff Analytical (925)988-9600 <br /> FAX(925)988-9673 <br /> Roy F. Weston, Inc. Client Project ID: Home Depot, Tracy Sampled: May 12, 1999 <br /> 2300 Clayton Rd., Ste 1580 Sample Matrix: Water Received: May 13, 1999::: <br /> Concord, CA 94520 Analysis Method: EPA 5030/8015 Mod. Reported: Jun 2, 1999 '. <br /> Attention: Scott Lookingbill First Sample #: 905-0775 <br /> QC Batch Number: GC051399 GC051399 GC051399 <br /> 802004A 802004A 802004A <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. <br /> µg/L 905-0775 905-0776 905-0777 <br /> GW-1 GW-2 GW-3 <br /> Purgeable <br /> Hydrocarbons 50 N.D. N.D. N.D. <br /> Chromatogram Pattern: <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0 1.0 <br /> Date Analyzed: 5/13/99 5/13/99 5/13/99 <br /> Instrument Identification: HP-4 HP-4 HP-4 <br /> ISurrogate Recovery: 91 92 91 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. <br /> Analytes reported as N.D.were not detected above the stated reporting limit. <br /> SEQUOIA ANALYTIC , #1271 Please Note: <br /> * Revised 7/9/99. <br /> v <br /> 0 lianne Fegley <br /> Project Manager <br /> 9050775.RFW <1> <br />