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JUN. 6.2003 12:38PM CAL/EPA DTSC - HWMP N0.905 P.4i5 <br />Mai d7 U3 U2!: -%5p b (HML) 51 0-3615 p.3 <br />California Department of Toxic Substances Control HML P. 021049 <br />HAZARDOUS MATERIALS LABORATORY to : 021051 <br />2151 Berkeley Way, Berkeley, CA 94704, Ph. (510) 54Q 3 Auth. No.: HMS5085 <br />Collector's Name: <br />Leo Valdez <br />Collectors Address: <br />DTSC, 700 Heinz Ave„ Suite 200 <br />Dilution <br />Berkeley, CA 94710 <br />Site of Sampling. <br />Delta Plating <br />Site Address: <br />818 S. Stanislaus <br />021049 <br />Stockton 95206 <br />Page I <br />of 2 <br />Date Collected: r14 / <br />Dale Received: 517/2003 <br />Date Exacted: 5/16/2005 <br />Date AnalyzeO; 5/16/2003 <br />05 <br />Analytical Procedure. EPA Method 90408: Liquid & sludge samples are mixed thoroughly and allowed to <br />equilibrate for 30 minutes. I H Is determined using pH meter calibrated with known pH buffer. <br />EPA Method 90450: Ten mLs of Diwater Is added to 10 g of soli, solid and waste samples_ <br />Then mix thoroughly and allowed to equilibrate for 30 min, pH is determined using pH meter <br />calibrated with known pH buffer. <br />HML <br />Callector's <br />Sample <br />pH <br />Dilution <br />Number. <br />Number: <br />Metrix: <br />(sample + pl water) <br />021049 <br />Delta P1 <br />Solid <br />9.79 <br />69 + 10ml <br />021050 <br />Delta P2 <br />Solid <br />7,29 <br />59 + 10ml <br />021051 <br />Delta P3 <br />Solid <br />9191 <br />5g + 10ml <br />I <br />Comments: <br />Samples are fluffy, light materials that absorbed the DI water. <br />)' b <br />enaida Odlon ate Jamail Garcha Date <br />ublic Health Chemist 11 Supervisor <br />