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0 0 J L ANALYTICAL SERVICES, INC. 217 Primo ,California 95358 * Office 53W11 - 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: 20102402 Description: Ground Water,MW#2,07/06109,720 Analytical Results Method Result Minimum Detection Method Analysis Analysis Analyst Constituent Level Limit Reference Date Time Fixed Dissolved Solids 460 mg/l 20 9.2 SM 2540E 07/08/2009: 15:35 MH Volatile Dissolved Solids 54 'mg/l 20 9.2 SM 2640E 07/08/2009' 15:35 MH; pH 6.6 SU 0.5 0.2 SM 4500-H B 07/0612009 08:35NH' Ammonical Nitrogen by Kjeldahl < 1 mg/1 1.0 0.8 SM 4500 NH3 C 07114/2009 10:00 BAM Electrical Conductivity(E.C.) 790 umho/cm 1.0 1.0 SM 2510B5 07/07/2009 14:13 JA Nitrate Nitrogen 0.3 mg/l 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 9221B 07/07/2009 16:00' AP QC Results Matrix Lab Theoretical Matrix Spike Control Precision Accuracy Response QC Units Blank Matrix Constituent Spike Spike Duplicate Spike % % off, Fixed Dissolved Solids mg/t' < 20 710 1500 2200 2200 1600 0.0 91.3 93.3 Volatile Dissolved Solids mg/i; < 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 88.8 89.0 Electrical Conductivity(E.C.) umho/cm < 1 1100 1400 2300 2300 1400 0.0 91.6 99.8 Nitrate Nitrogen mg/l < 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.