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SERVICES, • 217 Primoy • Modest,Calitomia 95358 • C (209)5WI11 • FAX 6 City of Riverbank Report# L2.2-14R03506 Attn:Darin Smaller Report Date: 10/12/2009 6707 3rd Street Received Date: 10/01/2009 Riverbank, CA 95367 Work Order: 206644 Laboratory Number: 20664404 Description: Water,G.W.M.W.#5,10/01/09,940 Analytical Results Minimum Method Method Analysis Analysis Result Detection Analyst Constituent Level Limit Reference Date Time =Fixed Dissolved Solids890 mg/1 20 9.2 SM 2540E 10/05/2009: 16:15 MH Volatile Dissolved Solids 93 mg/I 20 9.2 SM 2540E 10/05/2009 16:15' MH PH 6.9 SU 0.5 0.2 SM 4500-K8 10/02/2009 09:40' NH Ammonical Nitrogen by Kjeldahl < 1 mg/l 1.0 0.8 SAA 4500 NH3 C 10/05/2009 11:33 BAM Electrical Conductivity(E.C.) 1300 umho/cm 1.0 1.0 SM 251085 10/02/2009 18:40 JA Nitrate Nitrogen < 0.1 mgll 0.1 0.014 EPA 300.0 10/02/2009 12:21 JA Total Coliform(15-20T LST) < 2 1100ml 2.0 2.0 SM 9221E 10/01/2009 10c45rr AP QC Results Matrix Lab Theoretical Matrix Spike Control Precision Accuracy Resp onse Constituent QC Units Blank Matrix Spike Spike Duplicate Spike / / / Fixed Dissolved Solids mg/i < 20 620 1500 2100 2100 1500 2.0 91.7 93.3, Nblatile Dissolved Solids mg/l < 20 150 1500 1500 1500 1400 2.0 91.7 93.3' PH SU NA NA NA NA NA ! NA INA, I NA NA Ammonical Nitrogen by Kjeldahl mg/I < 1 < 1 28 26 26 26 0.5 93.1 91.4 Electrical Conductivity(E.C.) umholcm < 1 460 1400 1800 1800 1400 0.3 95.1 100.1 Nitrate Nitrogen mg/1_ < 0.1 < 0.1 0.9 0.9 0.9 0.9 0.4 99.1 95.6 Total Coliform(15-20 T LST) MOOMI NA NA NA NA NA NA NA NA NA Notes At 25 degrees C Authorized By: 10/12/2009 Amos Snider ELAP Accreditation Laboratory Certificate#1203. These results relate only to the samples tested. This report shall not be reproduced except in full,without written approval of the laboratory.