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i J L ANALYTICAL SERVICES, . 217 Pri y ,California 9535B ® Off` 11 - FAx Report# L2.2-14R03506 City of Riverbank Attn:Darin Smaller Report Date: 10/12/2009 6707 3rd Street Received Date: 10/01/2009 Riverbank, CA 95367 Work Order: 206644 Laboratory Number: 20664402 Description: Water,G.W.M.W.#2,10101109,740 Analytical Results Minimum Method Method Analysis Analysis Result Detection Analyst Constituent Level Limit Reference Date Time Fixed Dissolved Solids 640 mg/I 20 9.2 SM 2540E 10/05/2009 16:15 MH Volatile Dissolved Solids 28 mg/l 20 9.2 SM 2540E 10/05/2009 16:15 MH pH 6.8 SU 0.5 0.2 SM 4500-H B 10/02/2009' 09:40 NH Ammonica€Nitrogen by Kjeldahl < 1 mg/1 1.0 0.8 SM 4500 NH3 C 10/05/2009 11:33 BAM Electrical Conductivity(E.C.) 820 umho/cm 1.0 1.0 SM 2510B5 10/02/2009 18:40 JA Nitrate Nitrogen 11 < 0.1 mg/l 0.1 0.014 EPA 300.0 10/02/2009 12:21 JA Total Coliform(15-20 T LST) < 2 1100m1 2.0 2.0 SM 9221B 10101/2009 10:45 AP' QC Results Matrix Lab Theoretical Matrix Spike Control Precision Accuracy Response Constituent QC Units Blank Matrix Spike Spike Duplicate Spike % % % Fixed Dissolved Solids m9/1 i < 20 ! 620 1500 2100 2100 1500 2.0 91.7 93.3 Volatile Dissolved Solids mg/1 < 20 150 1500 1500 1500 1400 2.0 91.7 93.3 ,pH SU NA = NA NA NA NA NA NA NA NA Ammonical Nitrogen by Kjeldahl mg/1 < 1 < 1 28 26 26 26 0.5 93.1 91.4 Electrical Conductivity(E.C.) umho/cm < 1 460 1400 1800 1800 1400 0.3 95.1 100.1 Nitrate Nitrogen mg/1 < 0.1 < 0.1 0.9 0.9 0.9 0.9 0.4 99.1 95.6 Total Coliform(15-20 T LST) /100m1 NA AIA NA NA NA ` NA NA NA NA Notes At 25 degrees C Authorized By: 10/12/2009 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.