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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 Richgels <br /> Base Neutral and Acid Extractables Organic Analysis (EPA Method 8270C) <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 Qualls <br /> Acenaphthene BSH1942 Matrix Spike 0909743-22 ND 38,484 50,000 ug/L 77.0 62-123 <br /> Matrix Spike Duplicate 0909743-22 ND 34.296 50.000 ug/L 11.5 68.6 26 62-123 <br /> 1,4-Dichlorobenzene SSH1942 Matrix Spike 0909743-22 ND 38.389 50.000 ug/L 76.8 50-122 <br /> Matrix Spike Duplicate 0909743-22 ND 34,930 50.000 ug/L 9.4 69.9 30 50-122 <br /> 2,4-Dinitrotoluene BSH1942 Matrix Spike 0909743-22 ND 43.239 50.000 ug/L 86,5 47-139 <br /> Matrix Spike Duplicate 0909743-22 ND 39,057 50.000 ug/L 10.2 78.1 27 47-139 <br /> Hexachlorobenzene BSH1942 Matrix Spike 0909743-22 ND 24.831 50.000 ug/L 49.7 62-134 Q03 <br /> Matrix Spike Duplicate ,0909743-22 ND 22.578 50.000 ug/L 9.5 45.2 26 62-134 Q03 <br /> Hexachlorobutadiene BSH1942 Matrix Spike 0909743-22 ND 31.869 50,000 ug/L 63.7 34-114 <br /> Matrix Spike Duplicate 0909743-22 ND 28.423 50.000 ug/L 11.5 56.8 30 34-114 <br /> Hexachloroethane BSH1942 Matrix Spike 0909743-22 ND 37,792 50.000 ug/L 75.6 33-128 <br /> Matrix Spike Duplicate 0909743-22 ND 34.015 50.000 ug/L 10.6 68.0 30 33-128 <br /> Nitrobenzene BSH1942 Matrix Spike 0909743-22 ND 38.630 50.000 ug/L 77.3 61-119 <br /> Matrix Spike Duplicate 0909743-22 ND 34.722 50.000 ug/L 10.8 69.4 29 61-119 <br /> 1,2,4-Trichlorobenzene - BSH1942 Matrix Spike 0909743-22 ND 37.961 50.000 ug/L 75.9 49-123 <br /> Matrix Spike Duplicate 0909743-22 ND 33.625 50.000 ug/L 12.2 67.2 30 49-123 <br /> 4-Chloro-3-methylphenol BSH1942 Matrix Spike 0909743-22 ND 38.368 50.000 ug/L 76.7 56-139 <br /> Matrix Spike Duplicate 0909743-22 ND 34.493 50.000 ug/L 10.6 69.0 25 56-139 <br /> 2-Chlorophenol BSH1942 Matrix Spike 0909743-22 ND 36.707 50,000 ug/L 73.4 47-121 <br /> Matrix Spike Duplicate 0909743-22 ND 33.329 50.000 ug/L 9.6 667 30 47-121 <br /> ---- -- --- -- -- --- -------------- --- <br /> 2-Methylphenol BSH1942 Matrix Spike 0909743-22 ND 32.989 50.000 ug/L 66.0 39-125 <br /> Matrix Spike Duplicate 0909743-22 ND 29.159 50.000 ug/L 12,4 58.3 30 39-125 <br /> 3-&4-Methyiphenol BSH1942 Matrix Spike 0909743-22 ND 55.690 100.00 ug/L 55,7 36-100 <br /> Matrix Spike Duplicate 0909743-22 ND 49.663 100.00 ug/L 11.4 49.7 28 36-100 <br /> 4-Nitrophenol BSH1942 Matrix Spike 0909743-22 ND 16.564 50.000 ug/L 33.1 15-65 <br /> Matrix Spike Duplicate 0909743-22 ND 15.379 50,000 ug/L 7.2 30.8 30 15-65 <br /> The results in this report apply to the samples analyzed in accordance with the chain ojcutloa( document.This anatvrical report must be reproduced in its entirety. <br /> All results listed in this report aro for the exclusive use of the submitting party. BC Laboratories.Inc.assumes no responsibility for report alteration,separation,detachment or third parry interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 57 of 83 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />