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ENVIRONMENTAL heal <br /> . C <br /> Analytical Chemists <br /> February 26, 2008 Lab ID : STK0831240-003 <br /> Customer ID 3-12023 <br /> Luhdorff& Scalmanini, Consulting Eng. <br /> Attn: Till Angermann Sampled On : February 4, 2008-11:15 <br /> 500 First Street Sampled By : Gary Wuest <br /> Woodland, CA 95695 Received On : February 4, 2008-13:10 <br /> Matrix : Drinking Water <br /> Description : South Tracy#3 <br /> Project : Quarterly Water Sampling <br /> Sample Results-Inorganic <br /> Constituent Result PQL UnitsMCL Sample Preparation Sample Analysis <br /> - 7Method Date,11) Method Date/ID <br /> General Mineral P'' <br /> Total Hardness 268 2.5 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Calcium 68 1 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Magnesium 24 1 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Potassium 2 1 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Sodium 74 1 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Total Cations 8.6 0.1 meq/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Boron 1.0 0.1 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Copper ND 10 ug/L 1000' 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Iron ND 50 ug/L 300= 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Manganese ND 10 ug/L 50' 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Zinc ND 20 ug/L 50002 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> Total Alkalinity(as 180 10 mg/L 2320B 02/12/08:201433 2320B 02/12/08:201558 <br /> CaCO3) <br /> Hydroxide ND 10 mg/L 2320B 02/12/08:201433 2320E 02/12/08:201558 <br /> Carbonate ND 10 mg/L 2320B 02/12/08:201433 2320B 02/12/08:201558 <br /> Bicarbonate 230 10 mg/L 2320B 02/12/08:201433 2320B 02/12/08:201558 <br /> Sulfate 157 2 mg/L 500' 300.0 02/05/08:201205 300.0 02/05/08:201393 <br /> Chloride 53 1 mg/L 500' 300.0 02/05/08:201205 300.0 02/05/08:201393 <br /> Nitrate 26.2 0.4 mg/L 45 300.0 02/05/08:201205 300.0 02/05/08:201393 <br /> Nitrite as N ND 0.1 mg/L 1 300.0 02/05/08:201205 300.0 02/05/08:201393 <br /> Fluoride 0.1 0.1 mg/L 2 300.0 02/05/08:201205 300.0 02/05/08:201393 <br /> Total Anions 9.0 0.1 meq/L 2320B 02/12/08:201433 2320B 02/12/08:201558 <br /> pH 7.7 -- units 4500-H B 02/13/08:201466 4500HB 02/13/08:201625 <br /> Specific Conductance 848 1 umhos/cm 16002 25108 02/06/08:201192 2510B 02/06/08:201318 <br /> Total Dissolved Solids 510 20 mg/L 1000' 2540 C,E 02/06/08:201210 25400 02/07/08:201366 <br /> Total Dissolved Solids 634 0 mg/L 200.7 02/07/08:201256 200.7 02/07/08:201454 <br /> (sum) <br /> MBAS(foaming agents) ND 0.1 mg/L 0.5' 5540C 02/05/08:201186 55400 02/05/08:201315 <br /> Aggressiveness Index 12.2 1 -- 4500-H B 02/13/08:201466 4500HB 02/13/08:201625 <br /> 11 Langlier Index 1 0.3 1 1 1 -- 4500-H B 02/13/08:201466 4500HB 02!13/08:201625 <br /> ND=Non-Detected. PQL=Practical Quantitation Limit. Containers: (P)Plastic Preservatives:H2SO4 pH<2,HNO3 pH<2 <br /> MCL=Maximum Contamination Level. '-Secondary Standard. <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Field Office <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue Visalia,California <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 TEL:559/734-9473 <br /> TEL:805/392-2000 TEL:209/942-0182 TEL:530/343-5818 Mobile:559/737-2399 <br /> FAX:805/525-4172 FAX:209/942-0423 FAX:530/343-3807 FAX:559/734-8435 <br /> CA NELAP Certification No.0111 OCA CA ELAP Certification No.1563 CA ELAP Certification No.2670 <br />