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1e <br /> Jill III I'll; <br /> October 14, 2022 <br /> San Joaquin County EHD Lab : 2817 <br /> Customer No. : 330179101791 9 <br /> Quality Control - Metals <br /> NEW NEI EM=mE= <br /> Metals <br /> Boron 200.7 (STK2254303-001) MSD mg/L 4.000 95 . 1 % 75-125 <br /> MSRPD ug/L 4000 94,8 % 575-125 <br /> Calcium 200.7 (STK2254303-001 ) MSD nig/L 12.00 103 % 75-125 <br /> MSRPD ug/L 4000 94,13 % _575-125 <br /> Copper 2003 (STK2254303-001 ) MSD ug/L 800.0 103 % 75-125 <br /> MSRPD ug/L 4000 94.8 % 575-125 <br /> Iron 200.7 (STK2254303-001 ) MSD ug/L 4000 104 % 75-125 <br /> MSRPD ug/L 4000 94,8 % 575-125 <br /> Magnesium 200.7 (STK2254303-001) MSD mg/L 12 .00 103 % 75-125 <br /> MSRPD ug/L 4000 94,8 % :575-125 <br /> Manganese 200.7 (STK2254303-001 ) MSD ug/L 800.0 102 % 75-125 <br /> MSRPD ug/L 4000 94.8 % 575-125 <br /> Potassium 2003 (STK2254303-001 ) MSD mg/L 12.00 107 % 75-125 <br /> MSRPD ug/L 4000 94.8 % 5575-125 <br /> Sodium 2003 (STK2254303-001) MSD mg/L 12 .00 98.4 % 75-125 <br /> MSRPD ug/L 4000 94,8 % _575-125 <br /> Zinc 2003 (STK2254303-001 ) MSD ug/L 800.0 109 % 75-125 <br /> MSRPD ug/L 4000 94,8 % 5575-125 <br /> Definition <br /> DQO : Data Quality Objective - This is the criteria against which the quality control data is compared <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 /> Section: Quality Control Page 6 of 8 Page 6 of 8 <br /> Corporate Offices & Laboratory Office & Laboratory Office & Laboratory Office & Laboratory Office & Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E. Linda Avenue 3442 Empresa Carl Suite D 9415 W. Goshen Avenue <br /> Santa Paula, CA 93060 Stockton, CA 95215 Chico• CA 95926 San Luis Obispo, CA 93401 Mealla, CA 93291 <br /> TEL: (605)392.2000 TEL (209)942-0182 TEL: (530)343-5818 TEL: (805)783-2940 TEL: (559)734-9473 <br /> Env FAX: (805)525-41721 Ag FAX: (805)392-2063 FAX: (209)9421-0423 FAX: (530)343-3807 FAX: (805)783112912 FAX: (559)734-8435 '.. <br /> CA ELAP Certification No. 1573 CA ELAP Certification No. 1563 CA FLAP Certification No. 2670 CA ELAP Certification No. 2775 CA ELAP Certification No. 2810 <br />