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BRIERLEY DAILY FIELD REPORT <br /> ASSOCIATES <br /> Creating Space Underground <br /> Project Hokestra- North Slurry Wall Report No. 1 <br /> Location Firestone, CO Date Wednesday, April 24, 2013 ' <br /> Client Hall-Irwin Page 3 of 4 <br /> Contractor Hall-Irwin File No. 112206-000 <br /> Weather Partly Sunny/Cloudy Temperature Cool(45°-60°) , <br /> 3. Performed quality control testing on fresh slurry, trench slurry, import material, and soil-bentonite <br /> backfill. <br /> 4. Slurry level did not drop below 2ft of surface grade during excavation. <br /> 5. The de-sanding machine was not in operation during this shift. ' <br /> 6. HI is keeping the toe of the backfill slope within 30 t5 feet of the excavation to allow them to clean out <br /> the key and help prevent sand settling in the slurry wall key. <br /> 8. Set Summaries: <br /> Note: 30ft. lead-in trench to start excavation <br /> [0+00--�0+35] Start: 11:30 am(19ft)Finish: 12:21 pm(23ft) <br /> Top of Rock:gray/dark gray, soft,fresh,blocky,silty,CLAYSTONE. <br /> [0+35--*0+70] Start: 12:45 pm(19ft)Finish: 1:23 pm(23ft) <br /> Top of Rock:gray/dark gray, soft,fresh,silty,CLAYSTONE. <br /> [0+70--+1+05] Start:2:00 pm(19ft)Finish:2:45 pm(23ft) ' <br /> Top of Rock:gray/dark gray,soft,fresh,blocky,silty,CLAYSTONE. <br /> [1+05--->1+40] Start:3:18 pm(21ft)Finish:4:00 pm(25.5ft) <br /> Top of Rock:gray/dark gray,soft,fresh,blocky,silty CLAYSTONE. , <br /> [1+40—>1+75] Start:4:20 pm(24ft)Finish: 5:30 pm(28ft) <br /> Top of Rock:gray/dark gray, soft,fresh,silty,CLAYSTONE <br /> 9. PM profile was performed by Alonzo and Jesus (HI)after RY left job-site. ' <br /> ATTACHMENTS: ' <br /> Field Representative(s) Time on/off site Total <br /> Ryan Young 8:30 AM 6:00 PM 10.5 , <br /> Distribution: Ruben Hernandez; file <br /> C:\Documents and Settings\ksisnroy\Desktop\TEMPLATES\DFR 4-24- Brierley Associates <br /> 13.1.docx , <br />