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.O "AGRICULTURAL <br /> Analytical Chemists <br /> December 16, 2022 Lab No. : STK2236390 <br /> San Joaquin Co. Environmental Health Dep Customer No. : 3017919 <br /> Water Quality Division <br /> Attn: Steven Shih <br /> 1868 East Hazelton Ave. <br /> Stockton, CA 95205 <br /> Laboratory Report <br /> Introduction: This report package contains a total of 8 pages divided into 4 sections: <br /> Case Narrative (2 pages) :An overview of the work performed at FGL. <br /> Sample Results (2 pages) : Results for each sample submitted. <br /> Interpretation (1 page) : Drinking water Interpretation for each sample submitted. <br /> Quality Control (3 pages) : Supporting Quality Control(QC)results. <br /> Case Narrative <br /> This Case Narrative pertains to the following samples: <br /> � . o Date Received <br /> Wellhead 11/14/2022 11/14/2022 STK2256390-001 DW <br /> Sampling and Receipt Information: <br /> The Sample was received in acceptable condition and within temperature requirements, unless noted on the Condition <br /> Upon Receipt(CUR) form. The Sample was received, prepared and analyzed within the method specified holding times <br /> except those as listed in the table below.All samples arrived at 4.2 ° C. All samples were checked for pH if acid or base <br /> preservation is required (except for VOAs). For details of sample receipt information, please see the associated Chain of <br /> Custody and Condition Upon Receipt Form. <br /> Samples Over Hold Time <br /> . 1 <br /> I Analyte Method Maximum Hold Time Actual Hold Time <br /> STK2256390-001 Chloride 28 days 30.2 days <br /> STK2256390-001 Fluoride 28 days 30.2 days <br /> STK2256390-001 pH 15 minutes 9,047.0 minutes <br /> STK2256390-001 Sulfate 28 days 30.2 days <br /> Quality Control: All samples were prepared and analyzed according to established quality control criteria.Any exceptions are noted <br /> in the Quality Control Section of this report. <br /> Test Summary <br /> EPA 200.7 Preparation and analysis performed by FGL-Santa Paula(FGL-SP ELAP# 1573) <br /> EPA 300.0 Preparation and analysis performed by FGL-Santa Paula(FGL-SP ELAP# 1573) <br /> SM 2540 C Preparation and analysis performed by FGL-Santa Paula(FGL-SP ELAP# 1573) <br /> SM 4500-H+B Preparation and analysis performed by FGL-Santa Paula(FGL-SP ELAP# 1573) <br /> SM 4500-NO3 F Preparation and analysis performed by FGL-Santa Paula(FGL-SP ELAP# 1573) <br /> SM 5540 C Preparation and analysis performed by FGL-Santa Paula(FGL-SP ELAP# 1573) <br /> Discussion of Analytical Results: <br /> Case Narrative - 12/16/22 - Holding time failures were due to instrument malfunction. <br /> Section:Case Narrative Pagel of 8 Page 1 of 8 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo 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 />