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J L ANALYTICAL SERVICES, INC. 4T 217 Pri y • Modesb.Calilbnnia9535B - Cuff ( 111 - FAX 6 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: 20102403 Description: Ground Water,MW#3,07/06/09,950 Analytical Results Minimum Method Method Analysis Analysis Level Detection Analyst Constituent l Limit Reference Date Time Fixed Dissolved Solids 530 mg/1 20 9.2 SM 2540E 07108/2009 15:35MH` Volatile Dissolved Solids 75 moil 20 9.2 SM 2540E 07/08/2009 15:35 MH pH 6.5 SU 0.5 0.2 SM 4500-H B 0710612009' 08:35 NH Ammonical Nitrogen by Kjeldahl < 1 moll 1.0 0.8 SM 4500 NH3 C 07/14/2009 10:00 BAM Electrical Conductivity(E.C.) 910 umholcm 1.0 1.0 SM 251065 07/0712009 14:13 JA Nitrate Nitrogen 20 mg/i 0.1 0.014 EPA 300.0 07/07/2009 10:43 JA Total Coliform(15-20 T LST) < 2 /100m1 2.0 2.0 SM 9221B 07107/2009 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 molt c 20 710 1500 2200 22001600 0.0 91.3 93.3` Volatile Dissolved Solids moll < 20 110 1500 1500 1500 1500 0.0 91.3 93.3 pH SU INA NA NA NA NA NA NA NA NA' Ammonical Nitrogen by Kjeldahl mg/l < 1 < 1 28 25 25 25 2.7 88.8 89.0 Electrical Conductivity(E.C.) umho/cm < 1 1100 1400 2300 2300 1400 0.0 91.6 99.8 Nitrate Nitrogen mgll < 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.