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ENVIRONMENTAL reel C. <br /> Analytical Chemists <br /> May 21, 2008 Lab ID : STK0834694 <br /> Neil Anderson & Associates Customer : 3-9574 <br /> (Quality Control - Inorganic <br /> Constituent Method Date/11) Type CniL% Conc. QC Data t)Q0 Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F 05/12/2008:204611 MS mg/L 4.000 94.7% 5-285 <br /> MSD mg/L 4.000 106% 5-285 <br /> MSRPD mg1L 4.000 10.6% <30.4 <br /> 450ONO3F 05/12/2008:205083 CCB mg/l -0.015 0.1 <br /> CCV mg/l 4.000 106% 90-110 <br /> CCB mg/1 -0.011 0.1 <br /> CCV mg/l 4.000 1029E 90-110 <br /> Definition <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 /> MS Matrix Spikes-A random sample is spiked with a known amount of analyte. The recoveries arc 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 analvted. The <br /> recoveries 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 analvsis. <br /> DQO Data Qiility Ob ective-This is the criteria against which the Suality control data is compared. <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 559f737-2399 <br /> a' <br /> FAX 805/5254172 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 />