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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Project: Foothill LF,SJ County-5 year Reported: 09/03/2009 16:26 <br /> 1326 North Market Boulevard Project Number: 124591 <br /> Sacramento,CA 95834 Project Manager: Sheila Richgeis <br /> Water Analysis (Metals) <br /> Quality Control Report- Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> Aluminum BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 1119.0 1020.4 ug/L 110 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 1128.6 1020.4 ug/L 0.9 111 20 75-125 <br /> Antimony BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 425.96 408.16 ug/L 104 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 437.25 408.16 ug/L 2.8 107 20 75-125 <br /> Barium BSH1124 Duplicate 0910759-01 69.720 68.321 ug/L 2.0 20 <br /> Matrix Spike 0910759-01 69,720 516.81 408.16 ug/L 110 75-125 <br /> Matrix Spike Duplicate 0910759-01 69.720 518.50 408.16 ug/L 0 110 20 75-125 <br /> -- --._.__.__.-_ -------------- -- ----- -- - -------_ ----------- -- - <br /> Beryllium BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 231.89 204.08 ug/L 114 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 232.05 204.08 ug/L 0 114 20 75-125 <br /> - _ -------- - -------- --- ------------ - - - ------._.- - --------- <br /> Cadmium BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 230.18 204.08 ug/L 113 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 229.39 204.08 ug/L 0.9 112 20 75-125 <br /> Chromium BSH1124 Duplicate 0910759-01 1.4709 1.2419 ug/L 16.9 20 J <br /> Matrix Spike 0910759-01 1.4709 226.30 204.08 ug/L 110 75-125 <br /> Matrix Spike Duplicate 0910759-01 1.4709 226.33 204.08 ug/L 0 110 20 75-125 <br /> Cobalt BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 231.24 204.08 ug/L 113 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 229.20 204.08 ug/L 0.9 112 20 75-125 <br /> Copper BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 443.41 408.16 ug/L 109 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 444.59 408.16 ug/L 0 109 20 75-125 <br /> Iron BSH1124 Duplicate 0910759-01 ND ND ug/L 20 <br /> Matrix Spike 0910759-01 ND 1153.8 1020.4 ug/L 113 75-125 <br /> Matrix Spike Duplicate 0910759-01 ND 1163.6 1020.4 ug/L 0.9 114 20 75-125 <br /> The results in this report apply to the samples analyzed in accordance with the chain ojcuslody document.This analytical report must be reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party. BC Laboratories.Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bciabs.com Page 61 of 83 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />