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SERVICES, . 217 Pri y • Modesta.Cal is w D ( 111 • FAX City of Riverbank Report# L2.2-14R02155 Attn:Darin Smaller Report Date: 07/17/2009 6707 3rd Street Received Date: 07/07/2009 Riverbank, CA 95367 Work Order: 201101 Laboratory Number: 20110101 Description: Ground Water,MW#11,07/07/09,705 Analytical Results Method Minimum Method Analysis Analysis Result Detection Analyst Constituent Level Limit Reference Date Time Fixed Dissolved Solids 760 mg/1 20 9.2 SM 2540E 0710812009: 15:36 MH'< Volatile Dissolved Solids 100 mg/1 20 9.2 SM 2540E 0710812009 15,35' MH pH 6.6 SU 0.5 0.2 SM 4500-H B , 07105/2009' 08:30 NH Ammonical Nitrogen by Kjeldahl < 1 mg/I 1.0 0.8 SM 4500 NH3 C 07/14/2009 10:00 BAM Electrical Conductivity(E.C.) 1100 umho/cm 1.0 1.0 SM 251 OBS 07/07/2009 15:21 JA Nitrate Nitrogen 1.2 mg/i 0.1 0.014 EPA 300.0 07/07/2009 10:52 JA Total Coliform(16-20 T LST) < 2 /100mi 2.0 2.0 SM 9221 B 07/07/2009 11:45 AP QC Results Matrix Lab Theoretical Matrix Spike Control Constituent QC Units Blank Matrix Spike Spike Duplicate Spike Pre �sion Accu Response Fixed Dissolved Solids mg/l < 20 710 1600 2200 2200 '' 1600 0.0 91.3 93.3' Volatile Dissolved Solids mg/1 < 20" 110 1500 1500 1500 ` 1600' 0.0 91.3 93.3 pH SU NA' NA NA NA NA;:' NA' NA NA NA Ammonical Nitrogen by Kjeldahl mg/i < 1 < 1 28 25 25 25 2.7 88.8 89.0 Electrical Conductivity(E.C.) umho/cm < 1 1200 1400 2400 2400 1400 0.4 91.8 100.0 Nitrate Nitrogen mg/1 < 0.1 < 0.1 0.9 0.9 0.9 0.9 1.0 98.5 99.1 Total Coliform(15-20 T LST) 1100mi NA NA NA NA NA NA NA NA NA Notes At 25 degrees C Authorized By: 07/1712009 Antos 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.