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DAILY FIELD REPORT <br />Project Loveland Ready Mix Slurry Wall Report No. 20 <br />Location Larimer County, Colorado Date 4 April 2008 <br />Client Compass Environmental, Inc. Page 1 of 1 <br />Contractor Compass Environmental, Inc. File No. 107021-001 <br />Weather Partly Cloudy / Sunny Temperature 60's F <br />1. CONTRACTOR'S ACTIVITIES: <br />Contractor Start Work 0700 hrs <br />Contractor Stop Work 1700 hrs <br />Top of Backfill Slope at Start 36+30 <br />- - <br />To of Backfill Sloe at Stop 36+40 - <br />Toe of Backfill Sloe at Start 36+80 <br />Toe of Backfill Slope at Stop 37+50 <br />Last Completed Set at Start 37+10 <br />Last Completed Set at Stop 37+40 <br />Verified Area of Excavated Alluvium above Key (Dail) 1945 ,S?Ft. <br />Verified Area of Excavated Bedrock. (Cumulative) 12,895 S q. Ft. <br />Total Area Excavated To Date 28,500 Sq. 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 36+50 <br />Bentonite Slurry - In Trench 1 37+40 Excavation didn't start until 1300 hrs, no AM <br />test <br />Backfill (Slump, Density) 1 36+50 No backfill mixed in AM <br />Backfill (Gradation) 1 36+50 Results to be reported in weekly summary <br />Backfill (Permeability) -- -- Next Permeability will be taken around 40+00 <br />Verified Clean AM Backfill <br />Sloe and Bottom of Key Yes 36+90 through 37+10 Trench cleaned to bottom of key prior to next <br />excavation set. <br />Verified Depth To Bedrock <br />and Key Yes Sta 37+10 to 37+40 <br />1. GS recorded water level below ground surface at STAB 60+00, 70+00, and 39+50. All three were excavated between 8 ft <br />and 10 ft deep through clayey overburden down to sandy/gravel stratum. <br />1.1. Ground water results as recorded from ground surface: <br />1.1.1.39+50: - 8 ft <br />1.1.2. 60+00: - 7 ft <br />1.1.3.70+00: -9.5 ft <br />2. Excavation activities began in afternoon after excavator bucket repair. <br />3. Hard obstruction at STA. 37+40 <br />4. 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 1200/1730 5.5 <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 080404.doc