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Client Number: 023200106 <br />Project ID: 2612 S. Airport Way <br />Stockton, CA <br />Work Order Number: C1-11-796 <br />Table 1 (Continued) <br />ANALYTICAL RESULTS <br />Total Petroleum Hydrocarbons in Soil <br />by Infrared Spectrometry' <br />EPA 3550 (Mod.)/EPA 418.1 (SM 5520 FC)2 <br />1. The sample is sonication extracted using a modification of EPA 3550. The extract is analyzed, as in EPA 418.1 (SM <br />5520 CF), to yield results reported as Total Petroleum Hydrocarbons. Results are reported on a wet weight basin. <br />2. Standard Methods for the Examination of Water and Wastewater, 17th ed., American Public Health Association, <br />19$9. <br />GTEL Concord, CA Page 3 of 9 <br />C111796.DOC GTE L <br />E N V I R O N M E N T A L <br />LABORATORIES. INC. <br />