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Section: Quality ControlSection: Quality Control <br />This Page is to be Stamped <br /> <br />September 15, 2022 <br />Republic Services Lab No.: STK2251793 <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 08/23/2022:209563CTL Blank mg/L ND <20 <br />LCS mg/L 990.8 99.5 %90-110 <br />(SP 2213517-001)Dup mg/L 1.6%5 <br />(SP 2213517-001)Dup mg/L 0.9%5 <br />Nitrogen, Total Kjeldahl 351.2 09/07/2022:210142STA Blank mg/L ND <0.5 <br />LCS mg/L 12.00 100%73-124 <br />MS mg/L 12.00 96.0%54-136 <br />(VI 2246401-001)MSD mg/L 12.00 94.5%54-136 <br />MSRPD mg/L 12.00 1.5%≤27 <br />MS mg/L 12.00 75.4%54-136 <br />(VI 2246401-002)MSD mg/L 12.00 58.2%54-136 <br />MSRPD mg/L 12.00 24.6%≤27 <br />pH 4500-H B (CC 2282775-002)Dup units 0.0%4.80 <br />Ammonia Nitrogen 4500NH3G 08/29/2022:209819LCR Blank mg/L ND <0.2 <br />LCS mg/L 2.000 92.6%90-110 <br />MS mg/L 2.000 90.4%46-139 <br />(CH 2276972-008)MSD mg/L 2.000 89.9%46-139 <br />MSRPD mg/L 2.000 0.6%≤20 <br />Nitrate + Nitrite as N 4500NO3F 08/19/2022:209456LFS Blank mg/L ND <0.2 <br />LCS mg/L 11.22 97.0%80-120 <br />MS mg/L 5.609 93.1%66-125 <br />(VI 2246401-001)MSD mg/L 5.609 93.7%66-125 <br />MSRPD mg/L 5.609 0.6%≤30.4 <br />BOD 5210B 08/18/2022:312108CTH RgBlk mg/L 0.08 2 <br />LCS mg/L 198.0 106%84.6-115 <br />(STK2251672-001)Dup 0.5%15.9 <br />(STK2251672-001)Dup 12.6%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