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<br />5/3/00 <br />- Trenched 12+g5 to I5+10 <br />- Backfilled 9+50 to 11+30 <br />- Cleaned trench I I+00 to 12+85 <br />- Bentonite slurry has improved significantly to 45 seconds through Marsh funnel. <br />- Desander is almost ready for operation and has been placed next to trench at 14+g0. <br />- Possible leaky area at 12+50 to 12+75. Tltis is the area of the trench that we cleaned to in the <br />morning. Sloughing of the trench walls at 12+95 has prevented us from getting back to the <br />area to clean it again. <br />5/4/00 <br />- Trenched 15+10 to 16+35 <br />- Backfilled I 1+30 to 13+50 <br />- Desander operated for approximately three hours before [he submersible pump burned up. <br />- Down for approximately four hours to repair mixing backhoe. <br />5/5/00 <br />- Trenched 16+35 [0 17+60 <br />- Backfilled 13+50 [0 14+75 <br />- Cleaned trench 15+75 to 16+35 <br />- Mixing backhoe and dozer broke down after lunch. Backhoe has a broken hydraulic hose. <br />Dozer has a bad hydraulic pump. <br />5/6/00 <br />- Mixing backhoe and dozer still down. <br />- Could not clean trench to sloughing of walls a[ 17+70 <br />- Trenched 17+60 [0 18+25 <br />- No backfilling <br />Conclusions: <br />The first two weeks of production have gone somewhat slowly due to equipment <br />problems. The bedrock has been consistently around 17 feet deep and locally up to 19 <br />feet deep. The bedrock generally consists of a one-foot weathered orange-brown <br />claystone zone that is slightly moist. Below the weathered zone, the claystone becomes <br />shaley with layering more apparent at increasing depths. The initial layering is <br />disorganized and slightly moist. The layering in the deeper bedrock becomes thicker and <br />slightly moist to wet between layers. The bedrock also becomes harder with the thicker <br />layering. Below the weathered zone the bedrock becomes gray with occasional orange- <br />brown areas. The backfill has been generally within the specifications on all tests <br />beyond Station 0+50. The fines content (-200 material by weight) has been in the 45 to <br />50 percent range which is slightly higher than called for in the specifications but should <br />not pose a problem as long as the backfill mixture remains workable. The desanding <br />operations are expected to resume on Wednesday, May ] 0. <br />H:\0636_059\Summary Reports\Stegner Daily Logs h( <br />