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—� Callfomia Environmental Protection Agency <br /> ' Department of Toxic Substances Control <br /> Environmental Chemistry Laboratory <br /> 700 Heinz Avenue,Suite 100,Berkeley,CA 94710 <br /> oearasrrsq c�s'co".FTR�rC Telephone:(510)540.2122 <br /> ANALYTICAL LABORATORY REPORT-pH <br /> Authorization No,: 1BECO051 Sample Location: ThateherCoofCaliforria,Stockton <br /> ECL Sample lil: .SC00920 Preparation Date: 12/04/2018 <br /> Sample Matrix: Aqueous Preparation Method: EPA 90400 <br /> 9 Analysis Method: UPA9040C <br /> Lab Central Sample Control Limits <br /> Auutytc Units Bateh lDExpected Result Absolute Qualifier Analysis Date Absolute <br /> Result Diflemnec Flags Difrttence <br /> PH pH Units 18B1104 2.00 203 0.03 i2lws 0-0,05 <br /> ECL Sample ID: RC00922 Preparation Datc 12!04/2018 <br /> Preparation Method. EPA 90400 <br /> Sample Matrix: Aqueous Analysis Method: EPAL9940C - <br /> Lab Control Sample - Control Limits <br /> Analyte Units Batch ID HYPared - Result Absolute Qualifier Analysis Date Absolute <br /> Result Difference flags Daracace <br /> PH pH Units 1881105 .10.00 10.00 0.00 I2104/18. 0.0.05 <br /> Page 6 of 13 <br />