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April 29, 2021 Lab ID : STK2134563 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Inorganic - Wet Chemistry QC <br /> 2540CE 04/09/2021:203818 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 300.0 04/08/2021:205201 All analysis quality controls are within established criteria. <br /> 04/08/2021:203777 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAP# 1573). <br /> 5540C 04/09/2021:205225 All analysis quality controls are within established criteria. <br /> 04/09/2021:203870 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573),except: <br /> The following note applies to MBAS Extraction: <br /> 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted <br /> based on the LCS or CCV recovery. <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:DMB <br /> Digitally signed by Kelly A.D—,1-,B.S. <br /> Approved By Kelly A.Dunnahoo,B.S. (�Tide:Laboramry Di eaor <br /> Date:2021-04-30 <br /> Page 2 of 9 <br />