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ENVIRONMENTAL rye C <br /> Analytical Chemists <br /> September 14, 2009 Lab ID : STK0938073 <br /> Neil Anderson & Associates Customer : 3-9574 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F 09/012009:209181 MS mg/L 4.000 99.3% 5-285 <br /> (STK0937591-003) MSD mg/L 4.000 93.9% 5-285 <br /> MSRPD m 4.000 4.3% <30.4 <br /> 450ONO3F 09/01/2009:211323 CCB mg/L 0.006 0.1 <br /> CCV mg/L 4.000 94.8% 90-110 <br /> CCB mg/L 0.008 0.1 <br /> CCV m 4.000 1 94.4% 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 pair-A random sample duplicate is spiked with a known amount of analyzed.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Di rference(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 cam aned. <br /> Page 5 of 6 <br /> Corporate Offlees 8 Laboratory Office&Laboratory Office 8.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:5591734-9473 <br /> TEL:805/392-2000 TEL 209/942-0182 TEL:530/343-5818 Mobile:559f/37-2399 <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 />