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May 31, 2022 Lab ID : STK2235613 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Inorganic-Wet Chemistry QC <br /> 2320B 05/05/2022:206425 All analysis quality controls are within established criteria. <br /> 05/04/2022:204929 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 2510B 05/10/2022:206650 All analysis quality controls are within established criteria. <br /> 05/10/2022:205128 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 2540CE 04/26/2022:204551 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 300.0 05/12/2022:206818 All analysis quality controls are within established criteria. <br /> 05/11/2022:205176 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 450ONO2B 04/23/2022:205954 All analysis quality controls are within established criteria. <br /> 04/23/2022:204595 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 450ONO3F 04/26/2022:205956 All analysis quality controls are within established criteria. <br /> 04/26/2022:204578 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAN 1573). <br /> 5540C 04/23/2022:205847 All analysis quality controls are within established criteria. <br /> 04/23/2022:204511 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:MKH <br /> Digitally signed by Kelly A.Dunnahoo,B.S. <br /> Approved By Kelly A. Dunnahoo, B.S. I 75tle:Laboratory Director <br /> Date:2022-06-01 <br /> Page 2 of 8 <br />