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REPORT OF SLURRY WALL TEST <br />Report Number: 25045300.0015 <br />1 ~erracon <br />Service Date: October 31, 2006 10625 Wast I-70 Frontage Road North <br />Wheat Ridge, Cobrado 80033 <br />(303) 423.3300 <br />t: Report Date: November 08, 2006 <br />Carina Project: Saint Vrain Site Slurry Wall <br />Attn: Tyler Packard I-25 Frontage Rd 8 County Rd 28 <br />188 Inverness Drive West Longmont, CO <br />Ste 150 <br />Englewood CO 80112 <br />Services: <br />Project No.: 25045300 <br />Tertacon anrved on-site to observe product spill. Dave Varra with Carrol 8 Lange, Jim Papstein <br />with Rocky Mountain Pipeline, and Geo-Con were all on-site when Terracon arrived at 7:10 AM. <br />Product containment and vac pumping was observed. Terracon observed bentonite backfill placement <br />from stations 15+00 through 19+00. Excavation of soils around gasoline pipeline started around 1:45 <br />PM. Excavation of 15' in depth was completed to locate pipeline, this area was about 400 square <br />feet. installation of shutoff valve is to be placed at this location before repairs are made in <br />the slurry wall trench area. Slurry trench extended from stations 18+00 through 23+00 with product <br />found on slurry surface. No testing of slung or bentonite backfill was completed today. <br />• <br />Terracon Rep: Timothy M. Zieschang <br />Report Distribution: <br />~~ <br />Reviewed by: <br />Raymond L Denton <br />The tests ware pertortned in general accordance with applicable ASTM, AASHTO, or DOT test methods. This report Is exdusivety for the use of the dient <br />indicated above and shall not ba reproduced except in full without the written consent of our company. Test resuhs transmitted herein are onty applicable <br />to the actual samples tested at the location(s) referenced and are not necessariy indicative of the properties of other apparendy similar or identical <br />materials. <br />Page 1 of 1 <br />r.vw~veAe.. wr <br />