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.O `AGRICULTURAL Analytical Chemists July 2, 2024 Lab No. : STK2439348-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Scott Sanglaang Sampled On :June 24, 2024 at 10:23 1868 East Hazelton Ave. Sampled By : Rena Leroy Stockton, CA 95205 Received On :June 24, 2024 at 11:40 Description :Wellhead Matrix : Drinking Water Project : 15401 E. Hwy 120, Ripon, CA 95366- WP0042284 Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 114 2.5 mg/L 06/28/2024 09:00 ac 2340B 06/28/2024 14:02 ac Calcium 31 1 mg/L 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Magnesium 9 1 mg/L 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Potassium 5 1 mg/L 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Sodium 19 1 mg/L 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Total Cations 3.2 1 meq/L 06/28/2024 09:00 ac Calc. 06/28/2024 14:02 ac Boron 0.1 0.1 mg/L 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Copper ND 10 ug/L 10002 1 U 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Iron 120 30 ug/L 3002 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Manganese ND 10 ug/L 502 1 U 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac Zinc 40 20 ug/L 5000 1 06/28/2024 09:00 ac EPA 200.7 06/28/2024 14:02 ac SAR 0.8 06/28/2024 09:00 ac Calc. 06/28/2024 14:02 ac Total Alkalinity(as CaCO3) 90 10 mg/L 1 06/30/2024 17:03 amm SM 4500-H+B 06/30/2024 20:10 amm Hydroxide as OH ND 10 mg/L 1 U 06/30/2024 17:03 amm SM 4500-H+B 06/30/2024 20:10 amm Carbonate as CO3 ND 10 mg/L 1 U 06/30/2024 17:03 amm SM 4500-H+B 06/30/2024 20:10 amm Bicarbonate as HCO3 110 10 mg/L 1 06/30/2024 17:03 amm SM 4500-H+B 06/30/2024 20:10 amm Sulfate 23.5 0.5 mg/L 5002 1 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm Chloride 16 1 mg/L 5002 1 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm Nitrate as NO3 29.9 0.4 mg/L 45 1 1 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm Nitrite as N ND 0.1 mg/L 1 1 U 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm Nitrate+Nitrite as N 6.8 0.1 mg/L 10 1 1 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm Fluoride 0.2 0.1 mg/L 2 1 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm Total Anions 3.2 10 meq/L 06/25/2024 17:00 ldm Calc. 06/26/2024 00:53 ldm pH 7.54 --- units 1 06/24/2024 10:23 rl SM 4500-H+B 06/24/2024 10:23 rl Specific Conductance 330 1 umhos/cm 16002 1 06/30/2024 17:03 amm SM 4500-H+B 06/30/2024 20:10 amm Total Dissolved Solids 250 20 mg/L 10002 1 06/26/2024 10:00 ctl SM 2540 C 06/27/2024 11:40 ctl MBAS,Calc.as LAS,MW 320 Negative 0.1 mg/L 0.52 1 U 06/25/2024 18:18 amm SM 5540 C 06/25/2024 18:28 amm Aggressiveness Index 11.4 10 --- 06/28/2024 09:00 ac Calc. 06/28/2024 14:02 ac Langelier Index(20°C) -0.4 20 --- 06/28/2024 09:00 ac Calc. 06/28/2024 14:02 ac Nitrate Nitrogen 6.8 0.1 mg/L 10 1 1 06/25/2024 17:00 ldm EPA 300.0 06/26/2024 00:53 ldm DQF Flags Definition: U Constituent results were non-detect. 1 The MS/MSD did not meet QC criteria. 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 2 of 7 Page 2 of 7 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