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July 14, 2021 Lab 1D : STIC2138920 <br />San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br />Inorganic - Wet Chemistry QC <br />2540CE <br />06/29/2021:207275 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAP# 1573), except: <br />The following note applies to Total Dissolved Solids (TER): <br />440 Sample nonhomogeneity may be affecting this analyte. Data was accepted based on the LCS or CCV <br />recovery. <br />300.0 06/25/2021:209708 All analysis quality controls are within established criteria. <br />06/25/2021:207151 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAP# 1573). <br />5540C 06/25/2021:210243 All analysis quality controls are within established criteria. <br />06/25/2021:207589 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAP# 1573). <br />Certification:: I certify that this data package is in compliance with ELAP standards, both technically <br />and for completeness, except for any conditions listed above. Release of the data contained in this data <br />package is authorized by the Laboratory Director or his designee, as verified by the following electronic <br />signature. <br />ICD:MICH <br />Digitally signed by Kelly A. Dunnahoo, B.S. <br />Approved By Kelly A. Dunnahoo, B.S. Title: Laboratory Director <br />Date: 2021-07-14 <br />Page 2 of 9