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ENVIRONMENTAL Analytical Chemists December 17, 2025 Lab No. : STK2558219-004 Luhdorff& Scalmanini, Consulting Eng. Customer No.: 3012023 Attn:Jeanette Lovelis 500 First Street Sampled On : December 1, 2025 at 12:55 Woodland, CA 95695 Sampled By : Nate Plascencia Received On : December 1, 2025 at 14:05 Description Faulkner Matrix : System Project Water Monitoring Sample Results - Inorganic General Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 210 2.5 mg/L 12/02/2025 12:58 ac Calc. 12/02/2025 18:48 ac Calcium 56 1 mg/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Magnesium 17 1 mg/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Potassium 2 1 mg/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Sodium 64 1 mg/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Total Cations 7.0 1 meq/L 12/02/2025 12:58 ac _ 12/02/2025 18:48 ac Boron 0.4 0.1 mg/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Copper ND 10 ug/L 1 U 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Iron 70 30 ug/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Manganese ND 10 ug/L 1 U 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Zinc 20 20 ug/L 1 12/02/2025 12:58 ac EPA 200.7 12/02/2025 18:48 ac Total Alkalinity(as CaCO3) 190 10 mg/L 1 12/04/2025 15:41 amm SM 4500-H+B 12/05/2025 01:23 amm Hydroxide as OH ND 10 mg/L 1 UI 12/04/2025 15:41 amm SM 4500-H+B 12/05/2025 01:23 amm Carbonate as CO3 ND 10 mg/L 1 UI 12/04/2025 15:41 amm SM 4500-H+B 12/05/2025 01:23 amm Bicarbonate as HCO3 230 10 mg/L 1 12/04/2025 15:41 amm SM 4500-H+B 12/05/2025 01:23 amm Sulfate 84.9 0.5 mg/L 1 b 12/08/2025 13:00 ldm EPA 300.0 12/08/2025 22:05 Idm Chloride 67 1 mg/L 1 b 12/08/2025 13:00 Idm EPA 300.0 12/08/2025 22:05 Idm Nitrate as NO3 10.6 0.4 mg/L 1 12/02/2025 11:50 mml SM 4500-NO3 F 12/02/2025 13:26 mml Nitrite as N ND 0.2 mg/L 1 U 12/02/2025 11:50 mml SM 4500-NO3 F 12/02/2025 13:25 mml Nitrate+Nitrite as N 2.4 0.4 mg/L 1 12/02/2025 11:50 mml SM 4500-NO3 F 12/02/2025 13:26 mml Fluoride 0.2 0.1 mg/L 1 12/08/2025 13:00 Idm EPA 300.0 12/08/2025 22:05 Idm Total Anions 7.6 10 meq/L 12/08/2025 13:00 ldm _ 12/08/2025 22:05 Idm pH 7.6 --- units 1 12/01/2025 12:55 np SM 4500-H+B 12/01/2025 12:55 np Specific Conductance 730 1 umhos/cm 1 12/04/2025 15:41 amm SM 4500-H+B 12/05/2025 01:23 amm Total Dissolved Solids 430 20 mg/L 1 12/03/2025 11:00 ctl SM 2540 C 12/04/2025 11:40 ctl Total Dissolved Solids(sum) 532 10 mg/L 12/02/2025 12:58 ac Calc. 12/02/2025 18:48 ac MBAs,Calc.as LAS,MW 320 ND 0.1 mg/L 1 U 12/02/2025 15:40 mct SM 5540 C 12/02/2025 18:37 met Aggressiveness Index 12.0 10 --- 12/02/2025 12:58 ac Calc. 12/02/2025 18:48 ac Langelier Index(20°C) 0.2 20 --- 12/02/2025 12:58 ac Calc. 12/02/2025 18:48 ac Nitrate Nitrogen 2.4 0.4 mg/L 1 12/02/2025 11:50 mml SM 4500-NO3 F 12/02/2025 13:26 mml DQF Flags Definition: U Constituent results were non-detect. I The RPD for the laboratory duplicate exceeded laboratory criteria. b The Blank was positive for constituent but less than the PQL ND=Non-Detected, RL=Reporting Level, Di1.=Dilution Section: Sample Results Page 8 of 17 Page 8 of 17 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 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