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J L ANALYTICAL SERVICES, INC. 217 PrimoCal' is SM58 * Off 11 * FAX City of Riverbank Report# L2.2-14R02287 Attn:Darin Smaller Report Date: 07/24/2009 6707 3rd Street Received Date: 07/06/2009 Riverbank, CA 95367 Work Order: 201024 Laboratory Number: 20102405 Description: Ground Water,MW#7,07/06/09,850 Analytical Results Method MinimumDetection Method Analysis Analysis Analyst Constituent Result Level Limit Reference Date Time Anay Fixed Dissolved Solids 650 mg/l 20 9.2 SM 2540E 0710812009: 15:35 MH Volatile Dissolved Solids110 mg/l 20 9.2 SM 2540E 07108/2009 15:35 MH pH 6.9 SU 0.6 0,2 SM 4500-H B 07/06/2009 08:35' NH' Ammonical Nitrogen by Kjeldahl < 1 mgll 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 2510B5 07/0712009 14:13 JA Nitrate Nitrogen 21 mgll I 1 0.1 0.014 EPA"300.0 07/07/2009 10:43 JA Total Coliform(15-20 T LST) < 2 /100mi 2.0 2.0 " SM 9221 B 07/07/2009 16:00 AP QC Results Matrix Lab QC Units Blank Matrix Theoretical Matrix Spike Control Precision Accuracy Response Constituent Spike Spike Duplicate Spike % % % Fixed Dissolved Solids mgfi < 20 710 1500 2200 2200 1600 0.0 91.3 93.3 Volatile Dissolved Solids mg11 < 20 110 1500 1500 1500 1500 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 $8.8 $9.0 Electrical Conductivity(E.C.) umholcm < 1 1100 1400 2300 2300 1400 0.0 91.6 99.8 Nitrate Nitrogen mg/1 < 0.1 < 0.1 0.9 0.9 0.9_ 0.9 0.2 99.8 95.8 Total Coliform(15-20 T LST) /100ml NA` NA NA NA NA NA NA NA NA" Notes At 25 degrees C Authorized By: 07/24/2009 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.