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~.. <br />Technical Services, Inc.. <br />vuwW.legesad-group.torn <br />88 Empire Drive <br />St Paul, MN 55103 <br />Tel: 651-642-1150 <br />Fax: 651-642-1239 <br />Liesch Associates, Inc. Project: Former Elk River Dump <br />13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 <br />Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 <br />VOC 8260B -Quality Control <br />Legend Technical Services, Inc. <br />Spike Source %REC %RPD <br />Analyte Result RL MDL Units Level Result %REC Limits %RPD Limit Notes <br />Batch B8F1013 - Volatiles <br />Blank (B8F1013-BLK1) Prepared & Analyzed: 06/10/08 <br />Dibromochloromethane < 2.5 2.5 0.084 ug/L <br />Dibromomethane < 2.5 2.5 0.14 ug/L <br />Dichlorodifluoromethane < 5.0 5.0 0.39 ug/L <br />Dichlorofluoromethane < 1.0 1.0 0.070 ug/L <br />Ethyl ether < 5.0 5.0 0.10 uglL <br />Ethylbenzene < 1.0 1.0 0.055 ug/L <br />Hexachlorobutadiene < 10 10 0.58 ug/L <br />Isopropylbenzene < 1.0 1.0 0.068 ug/L <br />m,p-Xylene < 2.0 2.0 0.14 ug/L <br />Methyl isobutyl ketone < 5.0 5.0 0.13 ug/L <br />Methyl tert-butyl ether < 1.0 1.0 0.079 ug/L <br />Methylene chloride < 5.0 5.0 0.29 ug/L <br />Naphthalene < 5.0 5.0 0.38 ug/L <br />n-Butylbenzene < 2,5 2.5 0.094 ug/L <br />n-Propylbenzene < 1.0 1.0 0.079 ug/L <br />o-Xylene < 1.0 1.0 0.074 ug/L <br />p-Isopropyltoluene < 2.5 2.5 0.087 ug/L <br />sec-Butylbenzene < 1.0 1.0 0.030 ug/L <br />Styrene < 1.0 1.0 0.072 ug/L <br />tert-Butylbenzene < 1.0 1.0 0.046 ug/L <br />Tetrechloroethene < 1.0 1.0 0.10 ug/L <br />Tetrahydrofuran < 20 20 0.76 ug/L <br />Toluene < 1.0 1.0 0.036 ug/L <br />trans-l,2-Dichloroethene < 1.0 1.0 0.14 ug/L <br />trans-l,3-Dichloropropene <1.0 1.0 0.082 ug/L <br />Trichloroethene < 1.0 1.0 0.097 ug/L <br />Trichlorofluoromethane < 1.0 1.0 0.17 ug/L <br />Vinyl chloride < 1.0 1.0 0.10 ug/L <br />Surrogate:4-Bromotluorobenzene 43.1 ug/L 50.0 86.3 80-125 <br />Surrogate: Dibromofluoromethane 51.4 ug/L 50.0 103 80-121 <br />Surrogate: Toluene-d8 48.8 ug/L 50.0 97.7 80-125 <br />Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with <br />the chain of custody document. This analytical report must be reproduced <br />in its entirety. <br />Page 10 of 14 <br />