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SERVICES, • 217 Pri California 95358 . Oft ( )5W111 * FAX 6 City of Riverbank Report# 1-2.2-141103506 Attn:Darin Smaller Report Date: 10/12/2009 6707 3rd Street Received Date: 10/0112009 Riverbank, CA 95367 Work Order: 206644 Laboratory Number: 20664403 Description: Water,G.W.M.W.#3,10/01/09,1010 Analytical Results Minimum MethodMethodMethod Analysis Analysis Result Level Reference Date Time Analyst Constituent Limit Fixed DissolvedSolids 650 mill 20 9,2 SM 2540E 1010512009' 16:15' MH Volatile Dissolved Solids 35 mg/l 20 9.2 SM 2540E 10/05/2009, 16:15' MH; pH6.6 SU 0.5 0.2 SM 4500-H B 10102/2009 09:40 ' NH' Ammonical Nitrogen by Kjeldahl < 1 mg/l 1.0 0.8 SM 4500 Mia C -i 0105i2009 11:33 BAM Electrical Conductivity(E.C.) 840 umho/cm 1.0 1.0 SM 2510B5 10/02/2009 18:40 JA Nitrate Nitrogen _ 14 mg/I 0.1 0.014 EPA 300.0 10/02/2009 12:21 JA Total Coliform(1 -20 T LST) �< 2 /100ml 2.0 2.0 SM 9221B 10/0112009 10:45 AP QC Results Matrix Lab Theoretical Matrix Spike Control precision Accuracy Response QC Units Blank Matrix Constituent Spike Spike Duplicate Spike % % % Fixed Dissolved Solids mg/1' 20 620 1500 2100 2100 ' 1500 2.0 91.7 93.3 Volatile Dissolved Solids mg/I < 20 150 1500 -' 1500 1500 1400 2.0 91.7 93.3 pH SU NA ' NA NA NA > NA NA 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 Nitrogenmg/l < 0.1 < 0.1 0.9 0.9 0.9 0.9 0.4 99.1 95.6 Total Coliform(15=20 T LST) Mom NA NA NA 'NA NA', NA NA NA NA' Notes At 25 degrees C Authorized By: 10/12/2009 Arnos Snider FLAP 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.