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E1`!VIRO[`IM�iTAL <br /> nel c <br /> ANALYTICAL CHEMISTS <br /> November 29, 2007 Lab ID : STK0750692 <br /> Neil Anderson & Associates Customer : 3-9574 <br /> Quality Control - Inorganic <br /> Constituent Method Date/M Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as 450ONO3F 11/16/2007:211180 MS mg/L 4.000 96.1% 5-285 <br /> MSD mg/L 4.000 97.6% 5-285 <br /> MSRPD m 4.000 1.5% <30.4 <br /> 450ONO3F 11/16/2007:211964 CCB mg/I 0.002 0.1 <br /> CCv mg/l 4.000 101 % 90-110 <br /> CCB m9/1 -0.005 0.1 <br /> CCV 1m 4.000 102% 1 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 are an indication of how that sample <br /> matrix affects analyte recovery. <br /> MSD :Matrix Spike Duplicate of MS/MSD parr-A random sample duplicate is spiked with a known amount of analyted. 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 analysis. <br /> DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Field Office <br /> P.O.Box 272/853 Corporation Street 2500 Stagecoach Road 563 E.Undo Avenue Visalia,California <br /> Santa Paula,CA 93061-0272 Stockton,CA 95215 Chic,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:559/734-8435 <br /> CA NELAP Certifiraticn No.0111 OCA CA ELAP Certification No.1563 CA ELAP Certification No.2670 <br />