Laserfiche WebLink
<br /> <br />contact with the avrbsurface water table. This lean clay is expansive <br />and will act as an excellent sealer. Its permeability is quite loot. <br />particularly when compacted. It is recommended that the clay be placed <br />!n a 1•aryer at the bottom of the excavation and prior to placing any <br />debris in the excavation. This layer should be at least 6 inches in <br />thickness and should be compacted to 95% of the maximum Proctor Density <br />A6TM D-698. This will act as a seal which will help to protect the <br />water table at this point. The frets water table was not found at any <br />other point on the land fill site, even though the underlying clay <br />was found in at least three of the teat borings. This indicates that <br />infiltration from this hillside is not great and moat of the water <br />collects in the lower elevations. <br />-~ PIT OPERATIONBt <br />A sand pit is proposed along the south bank of <br />Brackett Creek to the east, and north of the proposed land fill. The <br />sand in this area is eomexfiat coarser grained than in the land fill <br />area and can bo used for some types of aggregates and some base course <br />material for roads. Sands oP Soil Type No. 1 can be used almost without <br />washing or graining. Soil Type 140. 1 will make a good ^and for asphalt <br />eggregste of the fine variety. it does not contain sufliciant non-raactiv~ <br />fleas to make an excellent aggregate for this purpose, but can be <br />used for sash asphalt. The material can also be used for some classes <br />of fine eoacrete aggregate. <br />11 <br />