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Sierra Foothill La,.,oratory, Inc. <br /> 255 Scottsville Blvd Phone 209/223-2800 <br /> PC Box 1268 Fax 209/223-2747 <br /> Jackson, CA 95642 Email info@sierralab.com <br /> Report Date: 05/29/2007 <br /> Page 4 of 5 <br /> Client: DEEM <br /> Project Report: 145822 <br /> SET Quality Control/Quality Assurance for Project 145822 <br /> Sodium, FAA, Dissolved (Analyzed: 05/09/20071500 EM Verifad: 05/14/2007 12:59 DEG) <br /> Sample Type Result Value Unit Recovery(%) RPD <br /> 622666 Duplicate 7.247 7.223 mg/L 0.3 <br /> 622489 Matrix SPK 44.4 40.0 mg/L 111 <br /> Lead, GFAA, Dissolved Low RL (Analyzed:05/14/2007 1020 EM Verified: 05/14/2007 14:19 DEG) <br /> Sample Type Result Value Unit Recovery(%) RPD <br /> 071CV Standard 39.82 40.0 ug/L 99.6 <br /> 08QCS1 Standard 3.560 3.0 ug/L 118.7 <br /> 09QCS2 Standard 69.36 70.0 ug/L 99.1 <br /> 21CCV Standard 40.89 40.0 ug/L 102.2 <br /> 28CCV Standard 38.82 40.0 ug/L 97.1 <br /> LCS 7.746 8.0 ug/L 96.8 <br /> 611170 LCS 21.5 20.2 ug/L 106.4 <br /> Blank <0.5 ug/L <br /> Vanadium, ICP Dissolved (Analyzed:05/15/2007 0950 EM Verified: 05/15/2007 15:51 DEG) <br /> Sample Type Result Value Unit Recovery(%) RPD <br /> ccv Standard 2325 2500 ug/L 93.0 <br /> ccv Standard 2321 2500 ug/L 92.8 <br /> ccv Standard 2453 2500 ug/L 98.1 <br /> ICV Standard 2328 2500 ug/L 93.1 <br /> QCS1 Standard 4.874 5.0 ug/L 97.5 <br /> QCS2 Standard 5135 5000 ug/L 102.7 <br /> 610893 LCS 1077 1107 ug/L 97.3 <br /> Blank <5.0 ug/L <br /> 622364 Duplicate 9.386 9.601 ug/L 2.3 <br /> 622364 Matrix SPK 946 1000 ug/L 94.6 <br /> Qualifiers: <br /> i - Analyte was positively identified; quantitation is Estimated <br /> Sierra Foothill Laboratory certifies that test results meet all applicable NELAC requirements unless stated otherwise. <br /> Results are specific to the sample(s) as submitted and only to the parameter(s)reported. <br /> This report shall not be reproduced, except in full,without the written permission of Sierra Foothill Laboratory, Inc. <br /> Continued <br />