2008-10-08_REVISION - M2006080 (7)

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DAILY FIELD REPORT Project Loveland Ready Mix Slurry Wall Report No. 40 Location Larimer County, Colorado Date 29 April 2008 Client Compass Environmental, Inc. Page 1 of 1 Contractor Compass Environmental, Inc. File No. 107021-001 Weather Partly Cloudy Temperature 40's - 70's F T rnNITR A rTnU IQ A f TTVITIFRr Contractor Start Work 0700 hrs Contractor Stop Work 1830 hrs Top of Backfill Slope at Start 54+80 To of Backfill Slope at Stop 55+90 Toe of Backfill Slope at Start 56+80 Toe of Backfill Sloe at Stop 58+00 Last Completed Set at Start 57+20 Last Completed Set at Stop 58+10 Verified Area of Excavated Alluvium and Bedrock (Dail) 2,430 S q. Ft. Total Area Excavated To Date 91,710 S q. Ft. Excavator Type Komatsu PC800 Fresh Slurry Made Yes FIELD REPRESENTATIVE'S ACTIVITIES: Quality Control Number of Samples Location or Batch # Comments Bentonite Slurry - As-Mixed 1 57+20 Met Spec Bentonite Slurry - In Trench 2 57+50,57+90 Met Spec, Sand eater than 20% for 57+90 Backfill (Slump, Density) 2 55+20 Met Spec Backfill (Gradation) 1 54+50 35% 4200 Backfill (Permeability) -- -- Next permeability sample to be taken around STA 60+00. Verified Clean AM Backfill Slope and Bottom of Key Yes 54+90 through 57+20 Trench cleaned to bottom of key prior to next excavation set. Verified Depth To Bedrock and Key Yes 57+30 through 58+10 Flat bottom (26-28ft) 1. Performed quality control testing on slurry and backfill. Observed backfill and excavation operations. Other tests performed yielded results in general accordance with project specifications. Test results were reported to Al of Compass. Prepared Daily Field Report and updated slurry wall data spreadsheet. ATTACHMENTS: None Field Representative(s) Time on/off site Total Benny Siljenberg 0700/1800 13 Distribution: Jeff Sallas; file C:\107021-001 Ready Mix\107021-000 Loveland Ready Mix Slurry Wall\C. Lyman Henn Inc. Construction\C.4 Field Reports\Daily Reports\DFR's\DFR 080429.doc