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ENVIRONMENTAL AGRICULTURAL <br /> Analytical Chemists <br /> May 5, 2021 Lab ID : STK2135171 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control - Inorganic <br /> Constituent Method Date/Ill Type Units Cone. QC Data DQO Note <br /> Metals <br /> Boron 200.7 MS mg/L 4.000 106% 75-125 <br /> (STK2135169-001) MSD mg/L 4.000 83.5% 75-125 <br /> MSRPD mg/L 800.0 24.0% X0.0 435 <br /> 200.7 04/19/21:205711AC CCV ppm 5.000 102% 90-110 <br /> CCB ppm -0.004 0.1 <br /> CCV ppm 5.000 99.1% 90-110 <br /> CCB PPM 0.044 0.1 <br /> Calcium 100.7 MS mg/L 12.00 103% 75-125 <br /> (STK2135169-001) MSD mg/L 12.00 74.9% 75-125 <br /> MSRPD mg/L 800.0 17.7% 1 :520.0 <br /> 100.7 04/19/21:205711 AC CCV ppm 25.00 100% 90-110 <br /> CCB ppm 0.13 1 <br /> CCV ppm 25.00 97.3% 90-110 <br /> CCB ppm 0.17 1 <br /> Copper 200.7 MS ug/L 800.0 114% 75-125 <br /> (STK2135169-001) MSD ug/L 800.0 92.3% 75-125 <br /> MSRPD ug/L 800.0 20.9% 1 :520.0 435 <br /> 200.7 04/19/21:205711 AC CCV ppm 1.000 101% 90-110 <br /> CCB ppm 0.0004 0.01 <br /> CCV ppm 1.000 108% 90-110 <br /> CCB PPM 0.0010 0.01 <br /> Iron 200.7 MS ug/L 4000 104% 75-125 <br /> (STK2135169-001) MSD ug/L 4000 82.1% 75-125 <br /> MSRPD I u 800.0 23.8% 1 :20.0 435 <br /> 200.7 04/19/21:205711AC CCV ppm 5.000 101% 90-110 <br /> CCB ppm 0.0151 0.03 <br /> CCV ppm 5.000 94.5% 90-110 <br /> CCB PPM -0.0287 0.03 <br /> Magnesium 200.7 MS mg/L 1200 107% 75-125 <br /> (STK2135169-001) MSD mg/L 12.00 80.2% 75-125 <br /> MSRPD I mg/L 800.0 19.7% 1 :520.0 <br /> 200.7 04/19/21:205711 AC CCV ppm 25.00 98.6% 90-110 <br /> CCB ppm 0.006 1 <br /> CCV ppm 25.00 94.9% 90-110 <br /> CCB PPM 0.02 1 <br /> Manganese 200.7 MS ug/L 800.0 107% 75-125 <br /> (STK2135169-001) MSD ug/L 800.0 84.2% 75-125 <br /> MSRPD u 800.0 23.9% 1 :_20.0 435 <br /> 200.7 04/19/21:205711AC CCV ppm 1.000 98.4% 90-110 <br /> CCB ppm 0.0039 0.01 <br /> CCV ppm 1.000 94.3% 90-110 <br /> CCB ppim -0.0026 0.01 <br /> Potassium 200.7 MS mg/L 12.00 98.7% 75-125 <br /> (STK2135169-001) MSD mg/L 12.00 79.0% 75-125 <br /> MSRPD m L 800.0 16.6% 1 :20.0 <br /> 200.7 04/19/21:205711 AC CCV ppm 25.00 97.4% 90-110 <br /> CCB ppm -0.03 1 <br /> CCV ppm 25.00 96.6% 90-110 <br /> CCB ppm -0.04 1 <br /> sod mm 200.7 MS mg/L 12.00 105% 75-125 <br /> (STK2135169-001) MSD mg/L 12.00 75.6% 75-125 <br /> MSRPD m L800.0 16.4% 1 :20.0 <br /> 200.7 04/19/21:205711 AC CCV ppm 25.00 102% 1 90-110 <br /> CCB ppm 0.16 1 <br /> CCV In 25.00 97.4% 90-110 <br /> Page 6 of 9 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Undo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 <br /> CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 <br />