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Section: Quality ControlSection: Quality Control <br />This Page is to be Stamped <br /> <br />September 20, 2022 <br />Republic Services Lab No.: STK2252391 <br />Customer No.: 3008692 <br /> <br />Quality Control - Wet Chem <br />Constituent Method Date/ID Type Units Conc.QC Data DQO Note <br />Wet Chem <br />Solids, Total Dissolved 2540CE 09/06/2022:210098CTL Blank mg/L ND <20 <br />LCS mg/L 990.8 97.8 %90-110 <br />(STK2252394-001)Dup mg/L 2.1%5 <br />(STK2252394-001)Dup mg/L 1.1%5 <br />Nitrogen, Total Kjeldahl 351.2 09/13/2022:210430STA Blank mg/L ND <0.5 <br />LCS mg/L 12.00 103%73-124 <br />MS mg/L 12.00 96.3%54-136 <br />(STK2252407-001)MSD mg/L 12.00 95.4%54-136 <br />MSRPD mg/L 12.00 1.0%≤27 <br />MS mg/L 12.00 85.4%54-136 <br />(STK2252394-001)MSD mg/L 12.00 85.5%54-136 <br />MSRPD mg/L 12.00 0.2%≤27 <br />pH 4500-H B (SP 2212840-001)Dup units 0.2%4.80 <br />Ammonia Nitrogen 4500NH3G 09/13/2022:210436LCR Blank mg/L ND <0.2 <br />LCS mg/L 2.000 94.0%90-110 <br />MS mg/L 2.000 88.7%46-139 <br />(VI 2246967-001)MSD mg/L 2.000 88.8%46-139 <br />MSRPD mg/L 2.000 0.1%≤20 <br />Nitrate + Nitrite as N 4500NO3F 09/02/2022:210038LFS Blank mg/L ND <0.2 <br />LCS mg/L 11.22 94.6%80-120 <br />MS mg/L 5.609 92.4%66-125 <br />(STK2252344-001)MSD mg/L 5.609 92.2%66-125 <br />MSRPD mg/L 5.609 0.3%≤30.4 <br />BOD 5210B 09/01/2022:312294KQP RgBlk mg/L -0.12 2 <br />LCS mg/L 198.0 88.6%84.6-115 <br />(STK2252406-001)Dup mg/L 13.3%15.9 <br />(STK2252406-001)Dup mg/L 11.6%15.9 <br />Definition <br />Blank :Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />DQO :Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Dup :Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />indication of precision for the preparation and analysis. <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 matrix <br />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 are an <br />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 and <br />analysis. <br />ND :Non-detect - Result was below the DQO listed for the analyte. <br />RgBlk :Method Reagent Blank - Prepared to correct for any reagent contributions to sample result. <br />Corporate Offices & Laboratory <br />853 Corporation Street <br />Santa Paula, CA 93060 <br />TEL: (805)392-2000 <br />Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 <br />CA ELAP Certification No. 1573 <br />Office & Laboratory <br />2500 Stagecoach Road <br />Stockton, CA 95215 <br />TEL: (209)942-0182 <br />FAX: (209)942-0423 <br />CA ELAP Certification No. 1563 <br />Office & Laboratory <br />563 E. Lindo Avenue <br />Chico, CA 95926 <br />TEL: (530)343-5818 <br />FAX: (530)343-3807 <br />CA ELAP Certification No. 2670 <br />Office & Laboratory <br />9415 W. Goshen Avenue <br />Visalia, CA 93291 <br />TEL: (559)734-9473 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 2810 <br />Office & Laboratory <br />3442 Empresa Drive, Suite D <br />San Luis Obispo, CA 93401 <br />TEL: (805)783-2940 <br />FAX: (805)783-2912 <br />CA ELAP Certification No. 2775 <br />ENVIRONMENTAL AGRICULTURAL <br />Analytical Chemists