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.O `AGRICULTURAL Analytical Chemists August 19, 2022 Lab No. : STK2250743-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Steven Shih Sampled On : August 1, 2022 at 10:00 1868 East Hazelton Ave. Sampled By : Naseem Ahmed Stockton, CA 95205 Received On : August 1, 2022 at 10:55 Description Wellhead Matrix : Drinking Water Project 15446 Moore Rd., Lodi-WP0043280 Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 72.8 2.5 mg/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Calcium 16 1 mg/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Magnesium 8 1 mg/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Potassium 4 1 mg/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Sodium 18 1 mg/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Total Cations 2.3 --- meq/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Boron ND 0.1 mg/L 1 J 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Copper 70 10 ug/L 10002 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Iron 40 30 ug/L 3002 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Manganese 110 10 ug/L 502 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Zinc 80 20 ug/L 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac SAR 0.9 0.1 1 08/08/2022 08:00 ac EPA 200.7 08/08/2022 12:58 ac Total Alkalinity(as CaCO3) 100 10 mg/L 1 08/06/2022 20:26 amm SM 2320 B 08/07/2022 00:47 amm Hydroxide as OH ND 10 mg/L 1 U 08/06/2022 20:26 amm SM 2320 B 08/07/2022 00:47 amm Carbonate as CO3 ND 10 mg/L 1 U 08/06/2022 20:26 amm SM 2320 B 08/07/2022 00:47 amm Bicarbonate as HCO3 120 10 mg/L 1 08/06/2022 20:26 amm SM 2320 B 08/07/2022 00:47 amm Sulfate 6.2 0.5 mg/L 5002 1 08/12/2022 10:55 mca EPA 300.0 08/12/2022 12:52 ldm Chloride 7 1 mg/L 5002 1 08/12/2022 10:55 mca EPA 300.0 08/12/2022 12:52 ldm Nitrate as NO3 1.2 0.2 mg/L 45 1 08/02/2022 15:45 Ifs SM 4500-NO3 F 08/02/2022 16:29 Ifs Nitrite as N ND 0.2 mg/L 1 1 U 08/02/2022 15:45 Ifs SM 4500-NO3 F 08/02/2022 16:27 Ifs Nitrate+Nitrite as N 0.3 0.2 mg/L 10 1 08/02/2022 15:45 Ifs SM 4500-NO3 F 08/02/2022 16:29 Ifs Fluoride ND 0.1 mg/L 2 1 J 08/12/2022 10:55 mca EPA 300.0 08/12/2022 12:52 ldm Total Anions 2.3 --- meq/L 1 J 08/06/2022 20:26 amm SM 2320 B 08/07/2022 00:47 amm pH 8.05 --- units 1 T 08/04/2022 12:23 jba SM 4500-H+B 08/04/2022 13:44 jba Specific Conductance 249 1 umhos/cm 16002 1 08/04/2022 08:58 sta SM 2510 B 08/04/2022 08:58 sta Total Dissolved Solids 210 20 mg/L 10002 1 08/03/2022 08:34 ctl SM 2540 C 08/04/2022 10:36 ctl MBAs(foaming agents) Negative 0.1 mg/L 0.52 1 U 08/02/2022 16:09 jba SM 5540 C 08/02/2022 16:34 jba Aggressiveness Index 11.7 1 1 08/04/2022 12:23 jba SM 4500-H+B 08/04/2022 13:44 jba Langelier Index(20°C) -0.2 1 1 08/04/2022 12:23 jba SM 4500-H+B 08/04/2022 13:44 jba Nitrate Nitrogen 0.3 0.2 mg/L 10 1 08/02/2022 15:45 Ifs SM 4500-NO3 F 08/02/2022 16:29 Ifs DQF Flags Definition: J Reported value is estimated;detected at a concentration below the PQL and above the laboratory MDL. U Constituent results were non-detect. T Exceeded method/regulatory-specific holding time. ND=Non-Detected, RL=Reporting Level, Dil.=Dilution MCL= Maximum Contamination Level. 2 - Secondary Standard. 3-CDPH Notification Level.AL= Regulatory Action Level. Section: Sample Results Page 3 of 8 Page 3 of 8 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 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 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