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J L ANALYTICAL SERVICES, INC. 217 Primo .California 95358 • O 53 111 • 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: 20102406 Description: Ground Water,MW#8,07/06/09,820 Analytical Results Method Result Minimum Detection Method An Analysis Analyst Constituent Level Limit Reference Daatete Time Fixed Dissolved Solids 540 mg/I 20 9.2 SM 2540E 07/08/2009" 15:35MH Volatile Dissolved Solids 110 mg/I 20 9.2 SM 2540E 07/0812009' 15:35 MH pH 7.1 SU 0.5 0.2 SM 4500-H B 07/06/2009' 08:35'; NH Ammonical Nitrogen by Kjeldahl < 1 mg/I 1.0 0.8 SM 4500 NH3 C 0711412009 10:00 BAM Electrical Conductivity(E.C.) 970 umholcm 1.0 1.0 SM 251065 07/07/2009 14:13 JA Nitrate Nitrogen. 9.5 mg/I 0.1 0.014 EPA 300.0 07/07/2009 10:43 JA Total Coliform(15-20 T LST) < 2 /100ml 2.0 2.0 SM 9221B 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 mg/l < 20 s 710 1500 2200 2200 1600 0.0 91.3 93.3 Volatile Dissolved Solids mg/I < 20 110 1500 1500 1500 1500' 0.8 91.3 93.3' pH SU NA' NA NA NA l NA;' NA NA NA NAi Ammonical Nitrogen by Kjeldahl mg/l < 1 < 1 28 25 25 25 2.7 88.8 89.0 Electrical Conductivity(E.C.) umholcm < 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) 1100ml NA NA NA NA NA NA NA NA NA Notes At 25 degrees C Authorized By: 07/24/2009 Arms Snider FLAP 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.