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www.energylab.com ( Helena, MT 877- 472 -0711 - Billings, MT 800- 735 -4489 - Casper, WY 888- 235 -0515 <br />Gillette, WY 866 -686 -7175 - Rapid City, SO 888 -672 -1225 • College Station, TX 888- 690 -2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />-0.505 <br />% <br />Report Date: 06/18/13 <br />Project: Schwartz GW 5/15/2013 <br />S26920 & S26921 <br />Collection Date: 05/15/13 14:00 <br />Lab ID: C13050697 -002 <br />A1030 E <br />05/29/13 16:52 / sdw <br />DateReceived: 05/17/13 <br />Client Sample ID: MW 15 (S26920) <br />meq /L <br />A1030 E <br />Matrix: Aqueous <br />Solids, Total Dissolved Calculated <br />440 <br />mg /L <br />MCL/ <br />Analyses <br />Result <br />Units Qualifiers R <br />QCL Method Analysis Date / By <br />A1030 E <br />05/29/13 16:52 / sdw <br />FIELD PARAMETERS <br />RADIONUCLIDES - TOTAL <br />Field Conductivity <br />Gross Alpha <br />257 <br />pCi /L <br />E900.0 06/13/13 15:50 / Ibb <br />Gross Alpha precision ( ±) <br />5.8 <br />pCi /L <br />E900.0 06/13/13 15:50 / Ibb <br />Gross Alpha MDC <br />2.6 <br />pCi /L <br />E900.0 06/13/13 15:50 / Ibb <br />Gross Beta <br />46.0 <br />pCi /L <br />E900.0 06/13/13 15:50 / Ibb <br />Gross Beta precision ( ±) <br />2.6 <br />pCi /L <br />E900.0 06/13/13 15.50 / Ibb <br />Gross Beta MDC <br />2.8 <br />pCi /L <br />E900.0 06/13/13 15:50 / Ibb <br />DATA QUALITY <br />A/C Balance (± 5) <br />-0.505 <br />% <br />A1030 E <br />05/29/13 16:52 / sdw <br />Anions <br />7.29 <br />meq /L <br />A1030 E <br />05/29/13 16:52 / sdw <br />Cations <br />7.21 <br />meq /L <br />A1030 E <br />05/29/13 16:52 / sdw <br />Solids, Total Dissolved Calculated <br />440 <br />mg /L <br />A1030 E <br />05/29/13 16:52 / sdw <br />TDS Balance (0.80 - 1.20) <br />0.970 <br />A1030 E <br />05/29/13 16:52 / sdw <br />FIELD PARAMETERS <br />Field Conductivity <br />684 <br />umhos /cm <br />FIELD <br />05/15/13 14:00 / — <br />Field pH <br />8.59 <br />s.u. <br />FIELD <br />05/15/13 14:00 / — <br />Field Temperature, C <br />12.2 <br />°C <br />FIELD <br />05/15/13 14:00 / — <br />"' Field data provided by client <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level <br />ND - Not detected at the reporting limit. <br />Page 6 of 24 <br />