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ENVIRONMENTAL e m= <br /> June OONtical Chemists Lab ID : STKI033632-001 <br /> Customer ID : 3-16663 <br /> City of Lathrop <br /> Public Works Dept. Sampled On : May 3, 2010-08:40 <br /> 390 Towne Centre Drive Sampled By : Ken Moffitt <br /> Lathrop, CA 95330 Received On : May 3, 2010-12:30 <br /> Matrix : Monitoring Well <br /> Description : W-1 <br /> Project : CR-Ground Water Monitoring <br /> Sample Result-Inorganic <br /> Constituent Result PQL Units Note Sample Preparation Sample Analysis <br /> Method Date/ID Method Date/ID <br /> General Mineral <br /> Total Hardness 1040 2.5 mg/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Calcium 296 1 mg/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Magnesium 74 1 mg/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Potassium 9 1 mg/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Sodium 465 2 mg/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Total Cations 41.3 0.1 meq/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Boron 1.0 0.1 mg/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Copper ND 10 ug/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Iron 230 50 ug/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Manganese 2780 10 ug/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Zinc ND 20 ug/L 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> SAR 6.3 0.1 -- 200.7 05/05/10:204464 200.7 05/05/10:205218 <br /> Total Alkalinity(as 720 10 mg/L 2320B 05/06/10:204542 2320B 05/06/10:205292 <br /> CaCO3) <br /> Hydroxide ND 10 mg/L 2320B 05/06/10:204542 2320B 05/06/10:205292 <br /> Carbonate ND 10 mg/L 2320B 05/06/10:204542 2320B 05/06/10:205292 <br /> Bicarbonate 880 10 mg/L 2320B 05/06/10:204542 2320B 05/06/10:205292 <br /> Sulfate 590 20 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Chloride 450 10 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Nitrate 0.7 0.4 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Nitrite as N ND 0.1 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Nitrate+Nitrite as N 0.2 0.1 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Fluoride ND 0.1 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Total Anions 39.4 0.1 meq/L 2320B 05/06/10:204542 2320B 05/06/10:205292 <br /> pH 6.8 -- units 4500-H B 05/03/10:204604 4500HB 05/03/10:205321 <br /> Specific Conductance 3490 1 umhos/cm 2510B 05/04/10:204440 2510B 05/04/10:205150 <br /> Total Dissolved Solids 2360 20 mg/L 2540 G 05/05/10:204474 2540C 05/06/10:205215 <br /> MBAS(foaming agents) ND 0.1 mg/L 5540C 05/04/10:204468 5540C 05/04/10:205177 <br /> Aggressiveness Index 12.5 1 -- 4500-H B 05/03/10:204604 4500HB 05/03/10:205321 <br /> Langller Index(20°C) 1 0.6 1 1 1 4500-H B 05/03/10:204604 4500HB 05/03/10:205321 <br /> Metals,TotalP:r5 <br /> Barium 132 0.2 ug/L 200.8 05/14/10:204885 200.8 05/14/10:205699 <br /> Wet Chemistryp: <br /> Ammonia Nitrogen ND 0.2 mg/L 4500NH3B 05/19/10:205040 4500NH3G 05/20/10:205875 <br /> Nitrate Nitrogen 0.2 0.1 mg/L 300.0 05/04/10:204455 300.0 05/04/10:205360 <br /> Nitrogen,Total Kjeldahl ND I mg/L 351.2 05/11/10:204709 EPA351.2 05/13/10:205565 <br /> ND=Non-Detected.PQL=Practical Quantitation Limit.Containers:(P)Plastic,(VOA)VOA Preservatives:H2SO4 pH<2,H2SO4 pH<2,HNO3 pH<2, <br /> HCl pH<2+Surrogate. <br /> Page 5 of 27 <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.01110CA CA ELAP Certification No.1563 CA ELAP Certification No.2670 <br />