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' BRIERLEY DAILY FIELD REPORT <br /> ASSOCIATES <br /> Crecnng ipoce Underground <br /> Project Hokestra-North Slurry Wall Report No. 7 <br /> Location Firestone, CO Date Thursday, May 02, 2013 <br /> Client Hall-Irwin Page 2 of 4 <br /> Contractor Hall-Irwin File No. 112206-000 <br /> ' Weather Sunny Temperature Cold(32°-45°) <br /> Quality Location or Batch# Results Comments <br /> ' Control <br /> Soil-Bentonite Backfill <br /> Unit Weight 9+90, 10+40 116.0, 114.2 pcf <br /> ' Slump 9+90, 10+40 6.00, 6.25 inches Notified Ruben see note 6 <br /> -200 Wash 9+90 44.7% passing No. 200 <br /> ' Triaxial Next sample to be taken at station <br /> Permeability 15+00 <br /> Test <br /> ' Cement Stabilized Soil-Bentonite Backfill(when applicable) <br /> Unit Weight XX pcf N/A <br /> Slump XX inches N/A <br /> ' Gradation XX% passing No. 200 N/A <br /> Verified Depth <br /> ' Verified X Yes <br /> Clean AM ❑ No <br /> Backfill <br /> Slope and <br /> ' Bottom of <br /> Key <br /> ® Yes 10+60—+10+95, 10+95—>11+30, <br /> ❑ No 11+30—+11+65, 11+65-12+00, 4ft key(22 ft total depth),4ft key <br /> Verified 12+00--*12+35, 12+35-12+70 <br /> Depth To (24 ft total depth),Oft key(23 ft <br /> Bedrock and total depth),4ft key(23 ft total <br /> depth), 4ft key(22ft total depth), <br /> ' Key 4ft key(23ft total depth) <br /> Bedrock Samples Top: 8:37 AM,9:29 AM, 10:24 <br /> ' Frequency = Once per 100LF of AM, 11:42 AM,3:10 PM,5:22 PM <br /> slurry wall 10+95, 12+00 Bottom:9:15 AM, 10:00 AM, <br /> 10:52PM, 12:30PM,4:00 PM,5:49 <br /> PM <br /> Average Excavation Time of Bedrock 0.62 Hrs <br /> per Set <br /> III. NOTES: <br />