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= = ENVIROI` NENTAL <br /> O p <br /> P <br /> 4 <br /> Y <br /> ANALYTICAL CHEMISTS <br /> May 20, 2003 Lab ID STK332453 <br /> Lodi Grading & Paving, Inc. Customer : 3-14883 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cane. QC Data DQO Note <br /> Wet Chem <br /> Nitrate 300.0 05/02/2003:8215 MS mg/L 400.0 109% 94-111 <br /> (SP 304494-01) MSD mg/L 400.0 109% 94-111 <br /> MSRPD mg/L 0.1% 52.71 <br /> 300.0 05/02/2003:A 06-CCB mg/L ND <0.4 <br /> 06-CCV mg/L 20.00 102% 90-110 <br /> 07-CCB mg/L ND <0.4 <br /> 07-CCV mg/L 20.00 103% 90-110 <br /> Nitrite Nitrogen 450ONO2B 05/02/2003:A251 MS mg/L 0.2284 97.9% 75-112 <br /> (SP 304487-01) MSD mg/L 0.2284 96.6% 75-112 <br /> MSRPD mg/L 0.0028 50.100 <br /> 4500NO2B 05/02/2003:A 00-CCB mg/L ND <0.1 <br /> 00-CCV mg/L 0.1522 101% 90-110 <br /> 01-CCB mg/L ND <0.1 <br /> 01-CCV mg/L 0.1522 102% 90-110 <br /> DelLdtions <br /> MS/MSD Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication o <br /> how that sample matrix affects analyte recovery. <br /> CCB Continuing Calibration Blank - Analyzed to verify the instmment baseline is within criteria. <br /> CCV Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br /> ND Non-detect - Result was below the DQO listed for the analyte. <br /> DQO Dara Quality Objective - This is the criteria against which the quality control data is compared. <br /> Corporate Offices&Laboratory Office b Laboratory Field OfficeOffices <br /> P.O.Box 272/853 Corporation Street 2500 Stagecoach Road Visalia,California <br /> Santa Paula,CA 93061-0272 Stockton,CA 95215 TEL: (559)734-9473 <br /> TEL (805)659-0910 TEL (209)942-0181 FAX: (559)734-8435 <br /> FAX: (805)525-4172 FAX: (209)942-0423 Mobile: (559)737-2399 <br /> CA NELAPCer88cation No.0111 OCA CA ELAP Certification No. 1563 <br /> CA ELAP Certification No. 1573 <br />