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California Department of Toxic Substances Control HML#: 011393 to 011398 <br /> Hazardous Materi Is Laboratory(Inorganic Section) Collector's#: SB01 <br /> 2151 Berkeley W , Berkeley, CA 94704 to: SB06 <br /> Tel No. (510) 40-3003 Authorization # HMR4763 <br /> LABORATORY REPORT <br /> Collector's Name: Leo Valdez Date Sampled: 6/7/02 <br /> Collector's Addres�: 700 Heinz Ave Date Received: 6/10/02 <br /> Berkeley, CA 94710 Activity: SCD <br /> Sampling Location, Stockton Bumper <br /> 632 S. EI Dorado, Stockton CA 95203 <br /> Analytical Procedu e Used: pH was determined using Accumet 825MP pHmeter <br /> calibrated with buff rs 4.00 7.00 & 10.0. <br /> Reference: EPA M thod#9040B & 9045C <br /> Analysis Results: <br /> HML COLLEICTOR'S TYPE OF DILUTION pH <br /> NO. SAMPLE NO. SAMPLE DI WATER <br /> 011393 S 01 Buffing wheel 10.08+40 ml 7.01 <br /> 011394 S 02 Plastic bumper powder 10.08+20 ml 7.52 <br /> 011395 S 03 Metal bumper powder 10.0g+10 ml 7.77 <br /> 011396 S 04 Grinding disks 10.0g+20 ml 6.75 <br /> 011397 S 05 Sandblasting grit 10.0g+10 ml 8.30 <br /> 011398 S 06 Mud +water run off 7.53 <br /> Signatures: <br /> Fatima Hussain Date— Milad Is<ander Date <br /> Analyst Supervisor <br />