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March 23, 2021 Lab ID : STK2133009 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Inorganic - Wet Chemistry QC <br /> 2510B 03/11/2021:203609 All analysis quality controls are within established criteria. <br /> 03/11/2021:202671 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAP# 1573). <br /> 2540CE 03/05/2021:202436 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAP# 1573). <br /> 300.0 03/04/2021:203298 All analysis quality controls are within established criteria. <br /> 03/04/2021:202410 All preparation quality controls are within established criteria(performed at FGL-SP <br /> ELAP# 1573),except: <br /> The following note applies to Nitrate: <br /> 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> 55400 03/04/2021:203395 All analysis quality controls are within established criteria. <br /> 03/04/2021:202526 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 /> KD:DMB <br /> Digitally signed by Kelly A Dunnahw,B.S. <br /> Approved By Kelly A.Dunnahoo,B.S. ®Title:laboratory Ditector <br /> Date:2021-03-23 <br /> Page 2 of 9 <br />