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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />C Q 1 Yl p beI l At1q I�/�� Cl7 f • t1C • Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />Se,"When n(ttT COuntc" http:/Avww.mccanVbeU.com / E-mail: inain@mccanipbeU.com <br />Chow Engineering Client Project ID: #11R-120; Date Sampled: 12/13/11 <br />CalWater Stockton <br />7770 Pardee Lane, Ste. 100 Date Received: 12/13/11 <br />Client Contact: Reuben Chow Date Extracted: 12/13/11 <br />Oakland, CA 94621-3023 Client P.O.: Date Analyzed: 12/14/11 <br />Gasoline Range (C6 -C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br />Extraction method. SW5030B Analytical methods: SW8021B/8015Bm Work Order. 1112399 <br />Lab ID <br />001A <br />Client ID <br />Pile I <br />Matrix <br />S <br />TPH(g) <br />ND <br />MTBE <br />ND <br />Benzene <br />ND <br />Toluene <br />ND <br />Ethylbenzme <br />ND <br />Xylenes <br />ND <br />DF <br />1 <br />% SS <br />104 <br />Comments <br />002A <br />Pile 2 <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />1 <br />104 <br />003A <br />Pile 3 <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />1 <br />108" <br />004A <br />Pile 4 <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />I <br />111 <br />005A <br />Pile 5 <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />1 <br />109 <br />Reporting Limit for DF =1; W 50 5.0 0.5 0.5 0.5 0.5 ug/L <br />ND mesas not detected at or <br />above the reporting limit S 1.0 0.05 0.005 0.005 0.005 0.005 mg/Kg <br />' water and vapor samples are reported in ltg/L, soil/sludge/solid samples in mg/kg, wipe samples in µg/wipe, product/oil/non-aqueous liquid samples and all TCLP & <br />SPLP extracts in mg/L. <br /># cluttered chromatogram; sample peak coelutes w/surrogate peak; low surrogate recovery due to matrix interference; %SS = Percent Recovery of Surrogate Standard; <br />DF = Dilution Factor <br />The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation: <br />DHS ELAP Certification 1644 Angela Rydelius, Lab Manager <br />Page 14 of 20 <br />