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REPORT OF SLURRY WALL TEST <br />Report Number: 25045300.0006 <br />Service Date: October 21, 2006 <br />1 ~~rr~con <br />10625 Wast 1-70 Frontage Road North <br />Wheat Ridge, Colorado 80033 <br />(303) 423-3300 <br />Attn: Tyler Packard <br />188 Inverness Drive West <br />Ste 150 <br />Englewood CO 80112 <br />Services: <br />Report Date: November 07, 2006 <br />Project: Saint Vrain Site Slurry Wall <br />I-25 Frontage Rd & County Rd 28 <br />Longmont, CO <br />Project No.: 25045300 <br />Terracon arrived on-site to observe slung wall construction operations. Field activities included <br />both morning and aftemoon testing of the bentonite slurry at the mixing station and at the trench <br />(stations 14+30 and 14+70). Each sample was tested for viscosity, unit weight, and sand percentage <br />by volume (trench samples only). Morning and aftemoon testing of the soil bentonite backfill was <br />conducted at stations 13+20 and 14+10, respectivety. Each sample was tested for slump and unit <br />weight. Soil bentonite backfill had 1°!° concrete mixed in between station 12+60 through station <br />14+50. Mixing of the soil bentonite backfill was observed throughout the day. Trench depth <br />measurements (both to key and total) were performed at stations 14+30, 14+60 and 14+g0, with a <br />sample collected at station 14+60. Completed trench length for the day was from stations 13+10 <br />through 14+90..Test results and measurements are presented in the attached report. <br />Weather: Cloudy & Cold Temperature: 55 <br />Terracon Rep: Timothy M. Zieschang <br />Field Results Reported To: Geo-Con <br />Report Distribution: <br />Reviewed by: `*-~ <br />~~ <br />Raymond L Denton <br />Tha tests ware perfomred in general accrordance with applicable ASTM, AASHTO, or DOT test methods. This report is exclusively for the use of the client <br />indicated above and shall not be reproduced except in full without the written consent of our company. Test results transmitted herein are onty applicable <br />to the actual samples tasted at the location(s) referenced and are not nacessariy indicative of the properties of other apparentty similar or identical <br />materials. <br />Page 1 of 1 .,,.,,..,...w, <br />