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J L ANALYTICAL SERVICES, INC. 217 Pri y ,Cali is 50 - Office CWWH111 # FAX 9) City of Riverbank Report# 1-2.2-141102287 Attn:Darin Smaller Report Date: 07/24/2009 6707 3rd Street Received Date: 07/06/2009 Riverbank, CA 95367 Work Order: 201024 Laboratory Number: 20102407 Description: Ground Water,MW#9,07/06/09,750 Analytical Results Minimum Method Method Analysis Analysis Result Detection Analyst Constituent Level Limit Reference Date Time Fixed Dissolved Solids - 530 mgli 20 9.2 SM 2540E 07/08/2009 15:35 MH' VolatileDissolved Solids 110 mg/1 20 9.2 SM 2540E 07/08/2009 15:35 MH pH 7.2 SU 0.5 0.2 SM4500-H B 0710612009: 08:35 NH Ammonical Nitrogen by Kjeldahl < 1 mg/1 1.0 0.8 SM 4500 NH3 C 07123/2009 14:14 BABA Electrical Conductivity(E.C.) 950 umho/cm 1.0 1.0 SM 251085 07/07/2009 14:13 JA Nitrate Nitrogen 14 mg/l 0.1 0.014 EPA 300.0 07/07/2009 10:43 JA Total Coliform(15-20 T LST) < 2 11 00m 2.0 2.0S' 92218 07107/2009 16:00 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? 710 1500 2200 2200 1600 0.0 91.3 93.3 Volatile Dissolved Solids mgll < 20 110 1,500 1500 1500 1500' OA 91.3 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 1.0 92.8 92.3 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) /l0omi 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.