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ENVIRONMENTAL <br /> Analytical Chemists <br /> November 12, 2008 Lab ID : STK0850590 <br /> Genesis Engineering& Redevelopment Customer : 3-16456 <br /> Quality Control-Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> Ammonia Nitrogen 4500NH3H 11/04/2008:211217 Blank mg/L ND <0.2 <br /> LCS mg/L 14.40 103% 63-116 <br /> MS mg/L 0.5760 -65.1% 17-127 435 <br /> (SP 0811518-003) MSD mg/L 0.5760 182% 17-127 435 <br /> MSRPD m 0.5760 71.5% 1580.2 <br /> 4500NH3H 11/04/2008:213502 CCB mg/I -0.031 0.2 <br /> CCV mg/I 2.000 102% 90-110 <br /> CCB mg/I -0.180 0.2 <br /> CCV mall 2.000 95.0% 90-110 <br /> 4500NH3H 11/04/2008:213509 ICB mgA -0.065 0.2 <br /> ICV mgA 2.000 105% 90-110 <br /> CCV mg/I 2.000 95.6% 90-110 <br /> CCB m -0.038 0.2 <br /> Nitrate+Nitrite as 450ONO3F 11/032008:211055 MS mg/L. 4.000 -206% <'/4 <br /> (STK0850382-008) MSD mg/L 4.000 -189% <%4 <br /> MSRPD mgfL 4.000 1.8% 1530.4 <br /> 450ONO3F 11/042008:213462 ICB mgA -0.050 0.1 <br /> ICV mgA 4.000 94.2% 90-110 <br /> CCB mg/I -0.070 0.1 <br /> CCV <br /> in 4.000 91.1% 90-110 <br /> 450ONO3F 11/04/2008:213465 ICB mg/I -0.028 0.1 <br /> ICV mgA 4.000 91.7°°/ 90-110 <br /> . CCB mg/1 0.1 10-0.067 <br /> CCV m 4.000 92.4°/ 90-1 <br /> Definition <br /> ICV :Initial Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> ICB :Initial Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline 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 /> o% :High Sample Background-Spike concentration was less than one forth of the sample concentration. <br /> DQO :Data Quality Obiective-This is the criteria a ainst which the quality control data is cora ared. <br /> Explanation <br /> 435 :Sam le matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Field Office <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Linda 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:805/5254172 FAX:209/942-0423 FAX:530/343-3807 FAX:SSW34-8435 <br /> CA NELAP Certification No.01110CA CA ELAP Certicetion No.1563 CA ELAP Certification No.2670 <br />