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ENVIRONMENTAL e m= <br /> Analytical Chemists <br /> August 10, 2009 Lab ID : STK0936708 <br /> Veolia Water NA-Lathrop-Crossroads Customer : 3-15058 <br /> Quality Control- Organic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Organic <br /> 1,2-Dichloroethane-d4 5030B 07/30/2009:207971 Blank ug/L 25.00 108% 73-138 <br /> LCS ug/L 25.00 107% 73-138 <br /> MS ug/L 25.00 118% 73-163 <br /> (SP 0907406-001) MSD ug/L 25.00 107% 73-163 <br /> MSRPD u /L 25.00 10.2% <20.0 <br /> Bromofluorobenzene 5030B 07/30/2009:207971 Blank ug/L 25.00 103% 80-127 <br /> LCS ug/L 25.00 108% 80-127 <br /> MS ug/L 25.00 107% 88-114 <br /> (SP 0907406-001) MSD ug/L 25.00 110% 88-114 <br /> MSRPD ug/L 25.00 2.9% <20.0 <br /> romodichloromethane 5030B 07/30/2009:207971 Blank ug/L ND <0.5 <br /> romoform 5030B 07/30/2009:207971 Blank ug/L ND <1 <br /> Chloroform 5030B 07/30/2009:207971 Blank u /L ND <0.5 <br /> ibromochloromethane 5030B 07/30/2009:207971 Blank ug/L ND <1 <br /> ibromofluromethane 5030B 07/30/2009:207971 Blank ug/L 25.00 106% 68-148 <br /> LCS ug/L 25.00 103% 68-148 <br /> MS ug/L 25.00 111% 78-150 <br /> (SP 0907406-001) MSD ug/L 25.00 105% 78-150 <br /> MSRPD ug/L 25.00 5.5% <20.0 <br /> Toluene-d8 5030B 07/30/2009:207971 Blank ug/L 25.00 102% 75-118 <br /> LCS ug/L 25.00 105% 75-118 <br /> MS ug/L 25.00 92.4% 65-125 <br /> (SP 0907406-001) MSD ug/L 25.00 87.3% 65-125 <br /> MSRPD u /L 25.00 5.7% <20.0 <br /> 1,2-Dichloroethane-d4 8260B 07/30/2009:209791 CCV ug/L 25.00 99.9% 70-130 <br /> Bromofluorobenzene(BFB) 8260B 07/30/2009:209791 CCV u /L 25.00 110% 70-130 <br /> romodichloromethane 8260B 07/30/2009:209791 CCV ug/L 25.00 100% 70-130 <br /> romoform 8260B 07/30/2009:209791 CCV u /L 25.00 91.7% 70-130 <br /> Chloroform 8260B 07/30/2009:209791 CCV ug/L 25.00 105% 80-120 <br /> ibromochloromethane 8260B 07/30/2009:209791 CCV u /L 25.00 83.1% 70-130 <br /> ibromofluromethane 8260B 07/30/2009:209791 CCV ug/L 25.00 102% 70-130 <br /> oluene-d8 8260B 07/30/2009:209791 1 CCV u /L 25.00 102% 70-130 <br /> Definition <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> MS Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> matrix affects analyte recovery. <br /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 30 of 33 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Field Office <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue Visalia,California <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 TEL:559/734-9473 <br /> TEL:805/392-2000 TEL:209/942-0182 TEL:530/343-5818 Mobile:559/737-2399 <br /> FAX:805/525-4172 FAX:209/942-0423 FAX:530/343-3807 FAX:559/734-8435 <br /> CA NELAP Certification No.01110CA CA ELAP Certification No.1563 CA ELAP Certification No.2670 <br />