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REPORT OF SLURRY WALL TEST <br />lt~rracon <br />Repoli Number: 25045300.0003 <br />Service Date: October 19, 2006 10625 West I-70 Frontage Road North <br />Wheat Ridge, Coloredo 80033 <br />(303) 423-3300 <br />t: Report Date: November 07, 2006 <br />Carina Project: Saint Vrain Site Sluny Wall <br />Attn: Tyler PackarcJ I-25 Frontage Rd 8 County Rd 28 <br />188 Inverness Drive West Longmont, CO <br />Ste 150 <br />Englewood CO 80112 <br />Project No.: 25045300 <br />Services: <br />Terracon arrived on-site to observe slurry wall construction operations. Field activities included <br />both morning and afternoon testing of the bentonite slurry at the mixing station and at fhe trench <br />(station 10+60). Each sample was tested for viscosity, unit weight, and sand percentage by volume <br />(Vench samples only). Morning and afternoon testing of the soil bentonite backfill was conducted <br />at station 9+10 and 9+20, respectivety. Each sample was tested for slump and unit weight Mixing <br />of the soil bentonite backfill was observed throughout the day. Trench depth measurements (both to <br />key and total) were performed at stations 11+40 and 12+00, with a sample collected at station 11+40. <br />Completed trench length for the day was from stations 9+40 through 12+00. The toe of the backfill <br />at the end of the day was marked at station 11+10. Test results and measurements are presented in <br />the attached report. <br />L~ <br />Weather. Sunny 8 Warm Temperature: 65 <br />Terracon Rep: Timothy M. Zieschang <br />Report Distribution: <br />c~ <br />Reviewed by' <br />Raymond L. nton <br />The tests were performed in generet accordance with appicable ASTM, AASHTO, or DOT test methods. This report Is exclusivety for the use of the Giant <br />indicated above and shall not be reproduced except in full without the written consent of our company, Test resuks transmitted herein are ony applicable <br />to the actual samples tested at the location(s) referenced and ere not necessarily indicative of the properties of other apparently similar or idenOcel <br />materials. <br />Page 1 of 1 „~.,.,,.., <br />