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California Department of Toxic Substances Control HML #: AO00950 <br />ENVIRONMENTAL CHEMISTRY LABORATORY to : AQ00959 <br />700 Heinz Ave., Ste. 100, Berkeley, CA 94710 Auth. No.: 06EC01 00 <br />Page 1 <br />Laboratory Analysis Report of 2 <br />For pH <br />Collector's Name: Alex Baillie <br />Collector's Address: <br />8800 Cal Center Drive Date Collected: 1/18/2007 <br />Liquid <br />Sacramento, CA 95826 Date Received: 1/18/2007 <br />9.7 <br />Date Extracted: <br />Site of Sampling: <br />Lodi Chrome Date Analyzed: 1/19,25/2007 <br />Site Address: <br />316 North Main Street <br />AQ00952 <br />Lodi, CA 95240 Method Used: 9040B, 9045C <br />Liquid <br />pH meter used: Accumet AR60 <br />Analytical Procedure: <br />EPA Method 9040B and 9045C: All samples were allowed to equilibrate for 30 min at <br />RH4 <br />room temperature. Liquids are thoroughly mixed prior to taking an aliquot to check the <br />N/A <br />pH. Twenty grams of each thoroughly mixed solid samples were weighed and diluted <br />AO00954 <br />with 20 mis of deionized water and the supernatant liquid were checked for pH. pH meter <br />Liquid <br />was calibrated with known buffers. <br />Calibration Buffers used: 1.00, 4.00, 7.00, 10.00, and 13.00. <br />HML Collector's <br />Number: Number: <br />Sample Dilution <br />Matrix: DI Water <br />31 <br />AO00950 <br />RH1 <br />Liquid <br />N/A <br />9.7 <br />AO00951 <br />RH2 <br />Solid <br />20g +20 mis <br />9.8 <br />AQ00952 <br />RHT <br />Liquid <br />N/A <br />>13.0 <br />AQ00953 <br />RH4 <br />Liquid <br />N/A <br /><1.00 <br />AO00954 <br />RH5 <br />Liquid <br />N/A <br /><1.00 <br />AO00955 <br />RH6 <br />Solid <br />20g +20 mis <br /><1.00 <br />AO00956 <br />RH7 <br />Liquid <br />N/A <br />>13.0 <br />AO00957 <br />RH8 <br />Liquid <br />N/A <br /><1.00 <br />AO00958 <br />RH9 <br />Solid <br />20g +20 mis <br />>13.0 <br />AO00959 <br />RH10 <br />Solid <br />20g +20 mis <br />10.4 <br />Comments: <br />Ztaida Odion <br />6emist <br />QJ/ L), � ! � —/ cx:�/ 4� / , 7 <br />Date arnail 6 archa Date <br />Section Lead Chemist <br />