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BRIERLEY DAILY FIELD REPORT ' <br /> ASSOCIATES <br /> Crecnng 5poce Underground <br /> Project Hokestra-North Slurry Wall Report No. 3 <br /> Location Firestone, CO Date Friday, April 26, 2013 ' <br /> Client Hall-Irwin Page 1 of 4 <br /> Contractor Hall-Irwin File No. 112206-000 <br /> Weather Sunny Temperature Cool(45°-60°) ' <br /> I. CONTRACTOR'S ACTIVITIES: <br /> Contractor Start Work 7:00 AM , <br /> Contractor Stop Work 6:30 PM <br /> Top of Backfill Slope at Start 1+70 <br /> Top of Backfill Slope at Stop 4+80 ' <br /> Toe of Backfill Sloe at Start 2+80 <br /> Toe of Backfill Sloe at Stop 6+00 <br /> Last Completed Set at Start 2+90--*3+25 , <br /> Last Completed Set at Stop 6+05-6+40 <br /> Verified Area of Excavated Material(Alluvium Plus Bedrock) 7,455 sf(Daily) <br /> 15,498 sf(Cumulative) <br /> Excavator Type Komatsu PC 800 ' <br /> Fresh Slurry Made N Yes ❑ No <br /> II. FIELD REPRESENTATIVE'S ACTIVITIES: -7 <br /> Quality Location or Batch# Results Comments <br /> Control <br /> Slurry Introduced into Trench ' <br /> Unit Weight 3+65 65 pcf <br /> Viscosity 3+65 43 seconds , <br /> Filtrate Filtrate Loss Assembly under <br /> maintenance <br /> Slurry In Trench ' <br /> Unit Weight 3+90, 4+90 88, 91 pcf Notified Ruben see note 5 <br /> Viscosity 3+90, 4+90 53, 56 seconds ' <br /> Sand Content 3+90@ 22' deep >20 % by volume <br /> Supplemental Fines(one per 500 lineal feet) <br /> -200 Wash 47.2% passing#200 Next sample to be taken at station <br /> Atterberg 5+00 Plasticity Verified 10+00 ' <br /> Limits <br />