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REPORT OF SLURRY WALL TEST <br />Report Number: 25045300.0016- <br />Service Date: November 2, 2006 <br />lt~rracon <br />10625 West I-70 Frontage Road North <br />Wheat Ridge, Colorado 80033 <br />(303) 4233300 <br />nt: Report Date: November 08, 2006 <br />rrna ~ Project: Saint Vrain Site Slurry Wall <br />Attn: Tyler,Packard I-25 Frontage Rd & Cotinty Rd 28 <br />188 Inverness Drive West Longmont, CO <br />Ste 150 <br />Englewood CO 80112 Project No.: 25045300 <br />Services: <br />Terracon arrived on-site to observe slurry wall construction operations. Morning observations of <br />stations 18+00 through 18+g0 included digital pictures for gasoline pipeline to be repaired. Slung <br />mixing was out of service for the morning. Repair crew located gasoline pipeline around 1:30 PM. <br />Pipeline crew had water pumps in place at pipeline grade level. Slurry trench operations started at <br />around 3:30 at station 7+90 working toward the west end. Backfill operations were not completed <br />today. Field activities included afternoon testing of the bentonite slurry at the mixing station <br />and at the trench (station 7+60). Each sample was tested for viscosity, unit weight, and sand <br />percentage by volume (trench samples only). No testing of the soil bentonite backfill was conducted <br />this day, and no trench depth measurements were performed. Test results are presented in the <br />attached report. <br />• <br />Terracon Rep: Timothy M. Zieschang <br />Report Distribution: <br />(t) cattna <br />Reviewed by: <br />Raymond L Denton <br />The tests were performed in general acwrdance with applicable ASTM, AASHTO, or DOT test methods. This report is exclusivety for the use of the client <br />Indicated above antl shall not be reproduced except in full without the written consent of our company. Test resuHS trensmittatl herein are only applicable <br />to the adual samples tested at the location(s) referenced and are not necessadty indicative of the properties of other apparently similar or Identical <br />matedals. <br />Page 1 of t o,,.,,o..~..... <br />