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.O `AGRICULTURAL Analytical Chemists January 24, 2025 Lab No. : STK2530759-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Scott Sanglaang Sampled On :January 15, 2025 at 08:45 1868 East Hazelton Ave. Sampled By : Aldara Salinas Stockton, CA 95205 Received On :January 15, 2025 at 13:33 Description :Wellhead Matrix : Drinking Water Project : 10513 S. Priest Rd. Fr. Camp- WP0043716 Sample Results - Inorganic ��®�� i General Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 166 2.5 mg/L 01/20/2025 13:00 ac 2340B 01/20/2025 14:17 ac Calcium 45 1 mg/L 1 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Magnesium 13 1 mg/L 1 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Potassium 4 1 mg/L 1 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Sodium 77 1 mg/L 1 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Total Cations 6.8 1 meq/L 01/20/2025 13:00 ac Calc. 01/20/2025 14:17 ac Boron 0.2 0.1 mg/L 1 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Copper ND 10 ug/L 10002 1 U 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Iron ND 30 ug/L 3002 1 U 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Manganese ND 10 ug/L 502 1 U 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Zinc ND 20 ug/L 5000 1 U 01/20/2025 13:00 ac EPA 200.7 01/20/2025 14:17 ac Total Alkalinity(as CaCO3) 240 10 mg/L 1 01/20/2025 17:46 amm SM 4500-H+B 01/20/2025 20:58 amm Hydroxide as OH ND 10 mg/L 1 U 01/20/2025 17:46 amm SM 4500-H+B 01/20/2025 20:58 amm Carbonate as CO3 ND 10 mg/L 1 U 01/20/2025 17:46 amm SM 4500-H+B 01/20/2025 20:58 amm Bicarbonate as HCO3 300 10 mg/L 1 01/20/2025 17:46 amm SM 4500-H+B 01/20/2025 20:58 amm Sulfate 26.2 0.5 mg/L 5002 1 01/20/2025 12:50 ldm EPA 300.0 01/21/2025 01:25 ldm Chloride 46 1 mg/L 500' 1 01/20/2025 12:50 ldm EPA 300.0 01/21/2025 01:25 ldm Nitrate as NO3 32.1 0.4 mg/L 45 1 01/16/2025 16:40 akb SM 4500-NO3 F 01/16/2025 19:19 akb Nitrite as N ND 0.2 mg/L 1 1 U 01/16/2025 16:40 akb SM 4500-NO3 F 01/16/2025 19:16 akb Nitrate+Nitrite as N 7.2 0.4 mg/L 10 1 01/16/2025 16:40 akb SM 4500-NO3 F 01/16/2025 19:19 akb Fluoride ND 0.1 mg/L 2 1 U 01/20/2025 12:50 ldm EPA 300.0 01/21/2025 01:25 ldm Total Anions 7.3 10 meq/L 01/20/2025 12:50 ldm Calc. 01/21/2025 01:25 ldm pH 8.2 --- units 1 T 01/15/2025 14:39 tag SM 4500-H+B 01/15/2025 14:39 tag Specific Conductance 687 1 umhos/cm 16002 1 01/20/2025 17:46 amm SM 4500-H+B 01/20/2025 20:58 amm Total Dissolved Solids 440 20 mg/L 10002 1 01/17/2025 11:30 ctl SM 2540 C 01/20/2025 11:45 ctl MBAs(Screen) Negative 0.1 mg/L 1 U 01/16/2025 16:51 krh SM 5540 C 01/16/2025 17:01 krh Aggressiveness Index 12.6 10 --- 01/20/2025 13:00 ac Calc. 01/20/2025 14:17 ac Langelier Index(20°C) 0.8 20 --- 01/20/2025 13:00 ac Calc. 01/20/2025 14:17 ac Nitrate Nitrogen 7.2 0.4 mg/L 10 1 01/16/2025 16:40 akb SM 4500-NO3 F 01/16/2025 19:19 akb Metals,Total Arsenic 31 1 ug/L 10 1 h 01/17/2025 10:00 ac EPA 200.8 01/17/2025 12:17 ac DQF Flags Definition: U Constituent results were non-detect. T Exceeded method/regulatory-specific holding time. h 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 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.Undo Avenue 3442 Empresa Drive,Suite D 9411 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 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