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J L ANALYTICAL SERVICES, INC. 217 Primoy* Modesto,California 95358 • Off 1i . 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: 20664405 Description: Water,G.W.M.W.#7,10/01/09,910 Analytical Results Minimum Method Method Analysis Analysis Level Detection Analyst Constituent l Limit Reference Date Time Fixed Dissolved Solids 670 mg/I 20 9.2 SM 2540E 10/05/2009- 16:15 MH Volatile Dissolved Solids 90 mg/I 20 9.2 SM 2540E 10/05/2009 16:15 MH pH7.0 SU 0.5 0.2 SM 4500-H B 10/02/2009 09:40 NH Ammonical Nitrogen by Kjeldahl < 1 mgil 1.0 0.8 SM 4500 NH3 C 10/05/2009 11:33 BAM Electrical Conductivity(E.C.) 940 umho/cm 1.0 1.0 SM 251085 10/02/2009 18:40 JA Nitrate Nitrogen 6.8 mgll 0.1 0.014 EPA 300.0 10/02/2009 12:21 JA Total Coliform(15-20 T LST) < 2 1100ml 2.0 2.0 SM 9221E 10101/ 2009' 10:45 AP QC Results Matrix Lab QC Units Blank Matrix Theoretical Matrix Spike Control Precision Accuracy Response Constituent Spike Spike Duplicate Spike % % oda Fixed Dissolved'Solids mg/l! < 20 " 620 1500 2100 2100 1500 ' 2.0 91.7 93.3 Volatile Dissolved Solids mg/l < 20 150 1500 1500 1500 1400 2.0 91.7 93.3 pH SU NANA NA NA NA INA NA NA NA Ammonical Nitrogen by Kjeldahl mg/l < 1 < 1 28 26 26 26 0.5 93.1 91.4 Electrical Conductivity(E.C.) umho/cm < 1 460 1400 1800 1800 1400 0.3 95.1 100.1 Nitrate Nitrogen mgll_ < 0.1 < 0.1 0.9 0.9 0.9 0.9 0.4 99.1 95.6 Total Coliform(15-20 T LST) /100ml NA' NA NA NA NA NA NA NA NA' Notes At 25 degrees C Authorized By: 10/12/2009 Arnos 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.