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r� 534 Willow Pass Rnad,Pittsburg,CA 94565-1701 <br /> MCCamI-�be�� Analytical, Inc.� Toll Fme Telephone:(877)252-9262/Fax:(925)252-9269 <br /> rr h v .mcca bellcom/E-mail:min@mcarMbell.com <br /> Quality Coun[s" nP'JAmp (ognccempbell.com <br /> Quality Control Report <br /> Client: Terracon WorkOrder: 1703F94 <br /> Date Prepared: 4/4/17 BatchID: 136741 <br /> Date Analyzed: 4/4/17 Extraction Method: SW5030B <br /> Instrument: GC16 Analytical Method: SW8260B <br /> Matrix: Water Unit: pg/L <br /> Project: NA177006;Recreational Service Facility Sample ID: MB/LCS-136741 <br /> 1703F51-010BMS/MSD <br /> QC Summary Report for SW8260B <br /> Analyte MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> Result Result Val Val %REC %REC Limits Limit <br /> tert-Amyl methyl ether(TAME) 10.4 10.7 10 ND 104 107 69-139 2.95 20 <br /> Benzene 9.86 10.0 10 ND 99 100 69-141 1.66 20 <br /> 4Butyl alcohol(TBA) 42.0 42.2 40 ND 102 103 41-152 0.473 20 <br /> 1,2-Dibromoethane(EDB) 10.4 10.7 10 ND 104 107 76-135 2.27 20 <br /> 1,2-Dichloroelhane(1,2-DCA) 10.2 10.7 10 ND 100 106 73.139 4.95 20 <br /> Diisopropyl ether(DIPE) 10.6 10.8 10 ND 106 108 72-140 2.57 20 <br /> Ethylbenzene 10.2 10.5 10 ND 102 105 73-128 2.78 20 <br /> Ethyl tart-butyl ether(ETRE) 10.4 10.7 10 ND 104 107 71-140 2.90 20 <br /> Methyl-t-butyl ether(MTBE) 10.5 10.6 10 ND 105 106 73.139 1.00 20 <br /> Naphthalene 9.86 10.4 10 ND 99 104 54.148 5.18 20 <br /> Toluene 9.36 9.56 10 ND 93 95 71-128 2.13 20 <br /> Xylenes,Total 28.1 28.8 30 ND 94 96 70-130 2.48 20 <br /> Surrogate Recovery <br /> Dibromo8uoromethane 23.4 23.4 25 94 94 73.131 0 20 <br /> Toluene-d8 26.1 26.0 25 104 104 72-117 0 20 <br /> 4-BFB 2.55 2.61 2.5 102 104 74-116 2.23 20 <br /> NELAP 4033ORELAP QA/QC Officer <br /> Page 7 of I 1 <br />