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ENVIRONMENTAL <br /> Analytical Chemists <br /> July 1, 2021 Lab ID : STK2137140-003 <br /> Customer ID : 3-12023 <br /> Luhdorff& Scalmanini, Consulting Eng. <br /> Attn: Jeanette Lovelis Sampled On : May 19, 2021-11:15 <br /> 500 First Street Sampled By : Will Zimmerman <br /> Woodland, CA 95695 Received On : May 19, 2021-15:55 <br /> Matrix : Drinking Water <br /> Description : South Tracy#3 <br /> Project : Water Monitoring <br /> Sample Result- Inorganic <br /> Constituent Result PQI. Unit, MCL/AL Sample Preparation Sample Analysis <br /> Method Date/ID Method Date/ID <br /> General Mineral <br /> Total Hardness as CaCO3 271 2.5 mg/L 200.7 05/24/21:205769 200.7 05/24/21.207767 <br /> Calcium 69 1 mg/L 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Magnesium 24 1 mg/L 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Potassium 2 1 mg/L 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Sodium 73 1 mg/L 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Total Cations 8.6 --- meq/L 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Boron 1.0 0.1 mg/L 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Copper 30 10 ug/L 10002 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Iron 600 30 ug/L 3002 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> anganese 70 10 ug/L 502 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Inc ND 20 ug/L 200.7 05/2421:205769 200.7 05/24/21:207767 <br /> SAR 1.9 0.1 200.7 05/24/21:205769 200.7 05/24/21:207767 <br /> Total Alkalinity(as CaCO3) 180 10 mg/L 2320B 05/27/21:205889 2320B 05/27/21:208034 <br /> Hydroxide as OH ND 10 mg/L 2320B 05/27/21:205889 2320B 05/27/21.208034 <br /> arbonate as CO3 ND 10 mg/L 2320E 05/27/21:205889 2320E 05/27/21:208034 <br /> Bicarbonate as HCO3 210 10 mg/L 23208 05/27/21:205889 2320E 05/27/21:208034 <br /> Sulfate 150 0.5 mg/L 5002 300.0 06/09/21:206443 300.0 06/10/21:208775 <br /> Chloride 56 1 mg/L 5002 300.0 06/09/21:206443 300.0 06/10/21:208775 <br /> Nitrate as NO3 23.1 0.9 mg/L 45 450ONO3F 05/20/21:205642 450ONO3F 05/20/21:207567 <br /> Nitrite as N ND 0.2 mg/L 1 450ONO3F 05/20/21:205643 450ONO3F 05/20/21:207564 <br /> Fluoride 0.2 0.1 mg/L 2 300.0 06/09/21:206443 300.0 06/10/21:208775 <br /> Total Anions 8.5 --- meq/L 2320B 05/27/21:205889 2320E 0527/21:208034 <br /> H 8.2 -- units 4500-H B 06/21/21:206933 4500HB 06/21/21.209399 <br /> Specific Conductance 842 l umhos/cm 16002 2510B 05/28/21:205946 2510E 05/28/21:208005 <br /> Total Dissolved Solids 550 20 mg/L 10002 2540CE 05/24/21:205746 2540C 05/25/21:207786 <br /> MBAS Extraction ND 0.1 mg/L 0.52 5540C 05/21/21:206093 5540C 05/21/21:208243 <br /> Aggressiveness Index 12.7 1 -- 4500-H B 06/21/21:206933 4500HB 06/21/21:209399 <br /> Langelier Index(20°C) 0.8 1 -- 4500-H B 06/21/21:206933 4500HB 06/21/21:209399 <br /> Nitrate Nitrogen 1 5.2 1 0.2 1 m /L 1 10 1 450ONO3F 05/20/21:205642 1 450ONO3F 05/20/21:207567 <br /> ND-Non-Detected.PQL=Practical Quantitation Limit.*PQL adjusted for dilution. <br /> MCL=Maximum Contamination Level.2-Secondary Standard.3-CDPH Notification Lc%el. AL=Regulatory Action Level. <br /> Page 6 of 14 <br /> corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Undo Avenue 3442 Empresa Drive.Suite D 9415 W.Goshen Avenue <br /> Santa Paula.CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX (209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)7348435 <br /> CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Cert'fiication No.2775 CA ELAP Certification No.2810 <br />