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REPORT OF SLURRY WALL TEST <br />Report Number: 25045300.0015 <br />Service Date: October 31, 2006 <br />Attn: Tyler Packard <br />188 Inverness Drive West <br />Ste 150 <br />Englewood CO 80112 <br />Services: <br />1[~rracon <br />10625 West I-70 Frontage Road North <br />Wheat Ridge, Colorado 80033 <br />(303) 423.3300 <br />Report Date: November O8, 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-sfte to observe product spill. Dave Varna with Carrol & 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 bentonlte backfill placement <br />from stations 15+00 through 19+00. F~tcayation 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 shut-off 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 slurry or bentonite backfill was completed today. <br />• <br />Terracon Rep: Timothy M. Zieschang <br />Report DisVibution: <br />(1) Cerma <br />• <br />Reviewed b : ~~ ~ '^ " <br />Y <br />Raymond L. Denton <br />The tests were performed in general accordance with applicable ASTM, AASHTO, or DOT test methods. This report is exdusNely for the use of the Giant <br />indicated alrove and shall not be reproduced except In full whhout the written consent of our company. Test resuhs transmitted herein are ony applicable <br />to the adual samples tested at the location(s) referenced end are not necessarily indicative of the properties of other apparentty similar or identical <br />matedals. <br />Page 1 d 1 ~,,,,,,~,,,,~„ <br />