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California Department of Toxic Substances Control HML #:931083 <br /> Hazardous Materials Laboratory to:931084 <br /> 2151 Berkeley Way, Berkeley, CA 94704 <br /> Ph. (510) 540-3003 <br /> Quality Assurance <br /> Dry Solid Determination <br /> I. Laboratory Balance Accuracy Verification (Expect true + 0. 01 g) <br /> NBS Observed Weight (g) <br /> Class S <br /> true weight Wet session Dry session <br /> (g) Begin End Begin End <br /> 2 . 00 2 .00 2 . 00 2 . 00 2 . 00 <br /> 5. 00 5. 00 5. 00 5. 00 5.00 <br /> 10. 00 10. 00 10.00 10. 00 10. 00 <br /> 20. 00 20. 00 20. 00 20. 00 20. 00 <br /> II. Blank Reading (empty weighing vessel) <br /> Blank Initial weight Dry weight Weight change <br /> (g) (g) (g) <br /> 1. 1. 55 1.55 0. 00 <br /> III. Duplicate Result <br /> Sample Sample Mean <br /> HML # Matrix Result Duplicate Result RPD <br /> (%) Result (%) <br /> (.) <br /> 931079 soil 96.4 96. 3 96. 35 0. 10 <br /> Atif R. 026fian Date Milad Iskander Date <br /> Analyst Supervisor <br />