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Techni-cal Servic~s~ Irtt. <br />www.te~end-group.t:om <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 82606 -Quality Control <br />Legend Technical Services, Inc. <br />Spike Source %REC %RPD <br />~nalyte Result RL MDL Units Level Result %REC Limits %RPD Limit Notes <br />Batch B8F1013 - Volatiles <br />Matrix Spike Dup (B8F1013-MSD1) Source: 0803396-01 Prepared & Analyzed: 06/10/08 <br />1,1,2,2-Tetrachloroethane 52.3 ug/L 50.0 < 105 75.3-123 5.65 20 <br />1,1-Dichloroethane 46.3 uglL 50.0 < 92.6 75-120 0.317 20 <br />1,1-Dichloroethene 43.8 ug/L 50.0 < 87.6 75-120 2.60 20 <br />1,3,5-Trimethylbenzene 47.5 ug/L 50.0 < 95.1 75-120 5.57 20 <br />1,4-Dichlorobenzene 48.2 ug/L 50.0 < 96.3 75-125 3.73 20 <br />2-Chlorotoluene 47.1 ug/L 50.0 < 94.2 75-120 5.63 20 <br />Benzene 49.3 ug/L 50.0 < 98.5 76.7-120 2.88 20 <br />Bromoform 48.8 ug/L 50.0 < 97.5 76.8-125 3.82 20 <br />Chlorobenzene 50.8 ug/L 50.0 < 102 80-120 2.11 20 <br />Chloroform 49.3 ug/L 50.0 < 98.6 77.2-120 0.507 20 <br />Ethylbenzene 51.3 ug/L 50.0 < 103 80-120 2.16 20 <br />n-But~Abenzene 49.5 ug/L 50.0 < 99.0 70-125 4.19 20 <br />n-Propylbenzene 46.9 ug/L 50.0 < 93.8 75-120 4.62 20 <br />Toluene 46.2 ug/L 50.0 < 92.4 77.3-120 3.97 20 <br />Trichloroethene 49.7 ug/L 50.0 < 99.4 79.2-120 1.60 20 <br />Vinyl chloride 47.1 ug/L 50.0 < 94.1 70-125 0.878 20 <br />Surrogate:4-Bromofluorobenzene 47.1 ug/L 50.0 94.2 80-125 <br />Surrogate: Dibromofluoromethane 51.6 ug/L 50.0 103 80-121 <br />Surrogate: Toluene-d8 48.8 ug/L 50.0 97.7 80-f25 <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 12 of 14 <br />