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April 20, 2022 Lab ID : STK2234449 <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <br />Inorganic - Wet Chemistry QC <br />2320B <br />04/13/2022:205298 All analysis quality controls are within established criteria. <br />04/13/2022:204054 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAN 1573). <br />2510B <br />04/13/2022:205223 All analysis quality controls are within established criteria. <br />04/13/2022:204018 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAN 1573). <br />2540CE <br />04/06/2022:203749 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAP# 1573). <br />300.0 <br />04/05/2022:204911 All analysis quality controls are within established criteria. <br />04/05/2022:203675 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAN 1573). <br />5540C <br />04/06/2022:205056 All analysis quality controls are within established criteria. <br />04/06/2022:203912 All preparation quality controls are within established criteria (performed at FGL-SP <br />ELAN 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 />KD: MKH <br />Digitally signed by Kelly A Dunnahoo, B.S. <br />Approved By Kelly A. Dunnahoo, B.S. Title Laboratory Director <br />Date: 2022.04.21 <br />Page 2 of 9 <br />