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4 McCampbeIl Analytical, Inc. <br />1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />I <br />"When Quality Counts" <br />http://www.mccampbell.com / E-mail: main@mccampbell.com <br />Chow Engineering <br />Client Project ID: #11R-120;Ca1Water Date Sampled: <br />12/15/11 <br />Stockton <br />— <br />Date Received: <br />12/15/11 <br />7770 Pardee Lane, Ste. 100 <br />Client Contact: Reuben Chow Date Extracted: <br />12/15/11 <br />Oakland, CA 94621-3023 <br />Client P.O.: Date Analyzed: <br />12/16/11 <br />Polychlorinated Biphenyls (PCBs) Aroclors by GC -ECD* <br />Extraction Method: SW3550B Analytical Method: SW8082 <br />Work Order: 1112484 <br />Lab ID <br />1112484-005A <br />Client ID <br />8W j <br />Reporting Limit for <br />DF =1 <br />Matrix <br />_. — - _ ._............... ................ <br />S <br />DF <br />1 <br />S <br />W <br />Compound <br />Concentration <br />mg/kg <br />ug/L <br />Aroclor1016 <br />ND <br />0.05 <br />NA <br />Aroclor1221 <br />ND <br />0.05 <br />NA <br />Aroclorl232 <br />I ND <br />I 0.05 <br />NA I <br />Aroclor1242 <br />I ND <br />I 0.05 <br />NA <br />Aroclor1248 <br />ND <br />0.05 <br />NA <br />Aroclor1254 <br />ND <br />0.05 <br />NA <br />Aroclor1260 <br />I ND <br />I 0.05 <br />NA <br />PCBs, total <br />ND <br />0.05 <br />NA <br />Surrogate Recoveries (%) <br />%SS: 85 <br />Comments <br />* water samples in µg/L, soil/sludge/solid samples in mg/kg, wipe samples in gg/wipe, filter samples in µg/filter, product/oil/non-aqueous liquid samples <br />and all TCLP & SPLP extracts are reported in mg/L. <br />ND means not detected above the reporting limit/method detection limit; N/A means analyte not applicable to this analysis; %SS <br />= Percent Recovery of <br />Surrogate Standard; DF = Dilution Factor <br /># surrogate diluted out of range or surrogate coelutes with another peak. <br />a3) sample diluted due to high organic content. <br />h4 sulfuric acid permanganate EPA 3665 cleanup <br />DHS ELAP Certification 1644 <br />Angela Rydelius, Lab Manager <br />Page 7 of 21 <br />