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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> SO Mccampbell Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> W) "When Qualin,Counts" http://www.mccampbell.coin/E-mail:mainGmccampbell.com <br /> Quality Control Report <br /> Client: Excelchem Environmental Labs WorkOrder: 2104071 <br /> Date Prepared: 04/02/2021 BatchlD: 218662 <br /> Date Analyzed: 04/02/2021 Extraction Method: SM4500H+B-2000 <br /> Instrument: WetChem Analytical Method: SM4500H+B <br /> Matrix: Water Unit: pH units @ 25°C <br /> Project: 2103218 Sample ID: CCV-218662 <br /> QC Summary Report for pH <br /> Analyte CCV CCV <br /> Result Limits <br /> pH 7.00 6.8-7.2 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 12 of 16 <br />