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JUN. 6.2003 12:38PM C A DTSC - HWMP N0.905 P.4i5 <br />MaB ey UU U2:,%5p MW [HML) 514W0-3615 P-3 <br />California Department of Toxic Substances Control HML; 021049 <br />HAZARDOUS (MATERIALS LABORATORY to : 021051 <br />2151 Berkeley Way, Berkeley, CA 94704, Ph: (510) 540,3003 Auth. No.: HM35085 <br />Laboratory Analysis Report <br />For pH <br />Collector's Name: Leo Valdez <br />Collector's Address: DTSC, 700 Heinz Ave„ Suite 200 <br />Berkeley, CA 94710 <br />Site of Sampling: Delta Plating <br />Site Address: 818 S. Stanislaus <br />Stockton 95205 <br />Page 1 <br />of 2 <br />Date Collected: ! s14 J10A3 <br />Date Received: 57/2003 <br />Date Extracted: 6!16/2003 <br />Date AnalyzW; 5/16/2003 <br />Analytical Procedure. EPA Method 9040B: 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 rnLs of Dlwater 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 />Collector's <br />Sample <br />pH <br />Dilution <br />Number. <br />Number: <br />Matrix; <br />(sample + pl water) <br />021049 <br />pelta P1 <br />Solid <br />9.79 <br />5g + 10mi <br />021050 <br />Delta P2 <br />Solid <br />7,29 <br />5g + 10ml <br />0210$1 <br />Delta P3 <br />Solid <br />9,91 <br />5g + 10ml <br />comments: <br />Samples are fluffy, light materials that absorbed the DI water, <br />e <br />enaida Odlon ate Jamai) Garcha <br />ubiic Health Chemist 11 Supervisor <br />7,,K, LAw -) 1 -/,�-7/0 <br />b <br />