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•O Analytical Chemists May 7, 2024 Lab No. : STK2436009-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Scott Sanglaang Sampled On : April 30, 2024 at 10:30 1868 East Hazelton Ave. Sampled By : Aaron Gooderham Stockton, CA 95205 Received On : April 30, 2024 at 14:30 Description Well Head Matrix : Drinking Water Project 5828 Cherokee Rd Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 116 2.5 mg/L 05/02/2024 08:00 ac 2340B 05/02/2024 12:45 ac Calcium 25 1 mg/L 1 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Magnesium 13 1 mg/L 1 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Potassium 4 1 mg/L 1 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Sodium 11 1 mg/L 1 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Total Cations 2.9 1 meq/L 05/02/2024 08:00 ac Calc. 05/02/2024 12:45 ac Boron ND 0.1 mg/L 1 U 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Copper ND 10 ug/L 10002 1 U 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Iron ND 30 ug/L 3002 1 U 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Manganese ND 10 ug/L 502 1 U 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac Zinc ND 20 ug/L 5000 1 U 05/02/2024 08:00 ac EPA 200.7 05/02/2024 12:45 ac SAR 0.4 05/02/2024 08:00 ac Calc. 05/02/2024 12:45 ac Total Alkalinity(as CaCO3) 130 10 mg/L 1 05/05/2024 15:12 amm SM 4500-H+B 05/05/2024 23:46 amm Hydroxide as OH ND 10 mg/L 1 U 05/05/2024 15:12 amm SM 4500-H+B 05/05/2024 23:46 amm Carbonate as CO3 ND 10 mg/L 1 U 05/05/2024 15:12 amm SM 4500-H+B 05/05/2024 23:46 amm Bicarbonate as HCO3 150 10 mg/L 1 05/05/2024 15:12 amm SM 4500-H+B 05/05/2024 23:46 amm Sulfate 12.8 0.5 mg/L 5002 1 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm Chloride 5 1 mg/L 5002 1 b 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm Nitrate as NO3 3.4 0.4 mg/L 45 1 1 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm Nitrite as N ND 0.1 mg/L 1 1 U 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm Nitrate+Nitrite as N 0.8 0.1 mg/L 10 1 1 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm Fluoride ND 0.1 mg/L 2 1 U 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm Total Anions 2.9 10 meq/L 05/01/2024 10:29 ldm Calc. 05/01/2024 22:35 ldm pH 7.30 --- units 1 04/30/2024 10:30 ag SM 4500-H+B 04/30/2024 10:30 ag Specific Conductance 292 1 umhos/cm 16002 1 05/05/2024 15:12 amm SM 4500-H+B 05/05/2024 23:46 amm Total Dissolved Solids 220 20 mg/L 10002 1 05/02/2024 12:45 ctl SM 2540 C 05/03/2024 10:00 ctl MBAS,Calc.as LAS,MW 320 Negative 0.1 mg/L 0.52 1 U 05/01/2024 14:28 krh SM 5540 C 05/01/2024 14:40 krh Aggressiveness Index 11.2 10 --- 05/02/2024 08:00 ac Calc. 05/02/2024 12:45 ac Langelier Index(20°C) -0.6 20 --- 05/02/2024 08:00 ac Calc. 05/02/2024 12:45 ac Nitrate Nitrogen 0.8 0.1 mg/L 10 1 1 05/01/2024 10:29 ldm EPA 300.0 05/01/2024 22:35 ldm DQF Flags Definition: U Constituent results were non-detect. b The Blank was positive for constituent but less than the PQL 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