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DAILY FIELD REPORT' <br />Project Loveland Ready Mix Slurry Wall Report No. 26 <br />Location Larimer County, Colorado Date 12 April 2008 <br />Client Compass Environmental, Inc. Page 1 of 2 <br />Contractor Compass Environmental, Inc. File No. 107021-001 <br />Weather Partly Cloudy/ Sunny-Windy Temperature 50's F <br />1. CONTRACTOR'S ACTIVITIES: <br />Contractor Start Work 0700 hrs__--__ <br />Contractor Stop Work 1800 hrs <br />Top of Backfill Slope at Start 38+80 <br />To of Backfill Sloe at Stop 40+00 <br />Toe of Backfill Slope at Start 41+30 <br />Toe of Backfill Slope at Stop 42+30 <br />Last Completed Set at Start 41+60 <br />Last Completed Set at Stop 42+80 <br />Verified Area of Excavated Alluvium and Bedrock (Dail) _3,75S Ft. <br />Total Area Excavated To Date 46,980 S q. Ft. <br />Excavator Type Komatsu PC800 <br />Fresh Slurry Made Yes <br />FIELD REPRESENTATIVE'S ACTIVITIES: <br />Quality Control Number of <br />Samples Location or Batch # Comments <br />Bentonite Slurry - As-Mixed 1 41+40 Fail/passing retest, see below. <br />Bentonite Slurry - In Trench 2 42+10,42+50 Trench slurry viscosity/weight maintained <br />passing status despite drop in fresh slurry <br />viscosity. <br />Backfill (Slump, Density) 2 39+00,39+60 <br />Backfill (Gradation) 1 39+60 <br />Backfill (Permeability) -- -- Next Permeability will be taken around 40+00 <br />Verified Clean AM Backfill <br />Sloe and Bottom of Key Yes 39+90 through 40+00 Trench cleaned to bottom of key prior to next <br />excavation set. <br />Verified Depth To Bedrock <br />and Key Yes 41+70 to 42+80 <br />1. 1045 hrs-1400 hrs, excavation and backfill operations halted due to drop in fresh slurry viscosity (36 s, 65 pcf). <br />Excavation and backfill operations did not restart until passing retest (41 s, 67 pcf) achieved from end of pipe at 1400 <br />hrs. <br />2. Performed quality control testing on slurry and backfill. Observed backfill and excavation operations. Other tests <br />performed yielded results in general accordance with project specifications. Test results were reported to Al of <br />Compass. Prepared Daily Field Report and updated slurry wall data spreadsheet. <br />ATTACHMENTS: None <br />Field Representative(s) Time on/off site Total <br />Greg Snyder 0700/1800 11 <br />Distribution: Jeff Sallas; file <br />C:\107021-001 Ready Mix\107021-000 Loveland Ready Mix Slurry Wall\C. Lyman Henn Inc. <br />Construction\C.4 Field Reports\Daily Reports\DFR's\DFR 08041 Ldoc