Laserfiche WebLink
' A sump pump continues to be utilized for controlling water in the pit. The <br />' sump located in the northeast corner of the main pit was noted to contain <br />water. Although at the time of inspection, no visible seepage into the sump <br />could be detected. It is generally assumed that the sump is locally lowering <br />the groundwater in advance of the main pit floor. Borehole DH-03-01 from <br />' the 2003 geotechnical investigation is approximately 200 feet west of the <br />sump, and was noted during this investigation to still be in place, although <br />' due to the large amounts of snow on the ground, assessment of water level <br />was not possible. A discussion with the driller onsite determined that water <br />level continues to be just below the 6,340 foot elevation in the main pit. <br />4) In the 2005 report, the rock mass in the southern expansion area was noted <br />as more massive with fewer discernable foliation surfaces than the rock <br />' exposed in the main pit of the quarry. More importantly, the average <br />orientation of the foliation surfaces measured in the expansion area <br />' between the elevations of 6,990 to 7,075 feet was determined to be <br />different than the dominant foliation mapped within the middle level and <br />main pit of the quarry. The average dip of the measurements for this <br />foliation set (hereinafter referred to as F-2) is 24° to the southwest, whereas <br />the average dip of the original foliation set F-1 in the rest of the quarry is <br />39° to the south-southeast. In evaluating the merged dataset for the <br />' southern expansion area using both the 2004 through the 2007 data, the <br />average dip of foliation F-2 is 22° to the southwest. <br />5) During the 2005 evaluation, an occasional foliation was measured that dips <br />to the north between 38° and 52°. The data collected reflecting this <br />northerly dip were mainly obtained from the expansion area of the quarry <br />' from the temporary walls and this orientation has not been found in any <br />notable quantity in the exposed walls during the current evaluation. This <br />' foliation set is being referred to as F-3. <br />-11- <br />