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March 23, 2011 Lab ID : STK1131554 <br />San Joaquin County Solid Waste Customer :3-2956 <br />Inorganic - Wet Chemistry QC <br />2130B <br />02/25/2011:202203 All preparation quality controls are within established criteria, except: <br />5030B <br />The following note applies to 1,2-Dichloroethane-d4: <br />02/22/2011:202753 All analysis quality controls are within established criteria. <br />310 LCS above Acceptance Ran a (AR). Samples which were non detect for this analyte were accepted. <br />2510B <br />02/28/2011:203013 All analysis quality controls are within established criteria, except: <br />02/22/2011:202034 All preparation quality controls are within established criteria. <br />The following note applies to 1,2-Dichloroedme-d4, Bromomethane (Methyl Bromide), <br />8260B <br />Trichlorofluoromethane F-11: <br />02/25/2011:203022 All analysis quality controls are within established criteria. <br />360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. <br />450ONO3F <br />The following note applies to 1,2-Dichloroethane-d4: <br />02!21/2011:201955 All preparation quality controls are within established criteria <br />362 Surrogates are qualified on Control Chart Limits, these are CCV limits. See individual sample reports. <br />Inorganic - Wet Chemistry QC <br />2130B <br />02/22/2011:202746 All analysis quality controls are within established criteria. <br />02/22/2011:202070 All preparation quality controls are within established criteria. <br />2320B <br />02/22/2011:202753 All analysis quality controls are within established criteria. <br />02/22/2011:202002 All preparation quality controls are within established criteria. <br />2510B <br />02/22/2011:202705 All analysis quality controls are within established criteria. <br />02/22/2011:202034 All preparation quality controls are within established criteria. <br />2540 G <br />02./23/2011:202079 All preparation quality controls are within established criteria. <br />300.0 <br />02/25/2011:203022 All analysis quality controls are within established criteria. <br />01./25/2011:202195 All preparation quality controls are within established criteria. <br />450ONO3F <br />02121/2011:202617 All analysis quality controls are within established criteria. <br />02!21/2011:201955 All preparation quality controls are within established criteria <br />Certification:: I certify that this data package is in compliance with NELAC standards, both <br />technically and for completeness, except for any conditions listed above. Release of the data contained <br />in this data package is authorized by the Laboratory Director or his designee, as verified by the <br />following electronic signature. <br />Dighft ds -d by--ftAD 93. <br />Approved By geIly A. Dannahoo, B.S. ,� D:�a <br />Page 2 of 18 <br />