2008-10-08_REVISION - M2006080 (7)

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DAILY FIELD REPORT Project Loveland Ready Mix Slurry Wall Report No. 33 Location Larimer County, Colorado Date 19 April 2008 Client Compass Environmental, Inc. Page 1 of 1 Contractor Compass Environmental, Inc. File No. 107021-001 Weather Sunny Temperature 60's F 1. CONTRACTOR'S ACTIVITIES: Contractor Start Work 0700 hrs___ Contractor Stop Work 1600 hrs Top of Backfill Slope at Start 46+30 Top of Backfill Slope at Stop Toe of Backfill Slope at Start 47+90 Toe of Backfill Slope at Stop 49+30 Last Completed Set at Start 49+10 Last Completed Set at Stop 50+20 Verified Area of Excavated Alluvium and Bedrock (Daily) 3,230 Sq. Ft____ Total Area Excavated To Date 69,260 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 49+30 Pass Bentonite Slurry - In Trench 2 49+70,50+00 Met Spec, Sand Content of 15% @ 49+70 Backfill (Slump, Density) 2 46+40,47+50 Met Spec Backfill (Gradation) 1 46+40 37% 4200 Backfill (Permeability) -- -- Next permeability sample to be taken around STA 50+00. Verified Clean AM Backfill Sloe and Bottom of Key Yes 44+50 through 48+90 Trench cleaned to bottom of key prior to next excavation set. Verified Depth To Bedrock and Key Yes 49+20 to 50+20 Flat bottom (29-31ft) 1. Backfilling operation slow (1 backfill operator). 2. 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 Benny Siljenberg 0700/1530 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 080419.doc Total 10.5