PERMFILE70948 - Laserfiche WebLink

Home Browse Search

FROM BR~P.Z 3 RSSOCIRTES INC i-RX N0. : 970 263 9'35 Ian. 03 2001 0a:47PM P2 Mr. Cregg Squiie Pane 2 Decetltbcr 30, 2000 the operator will plant a vegetative barrier between the pits and the slough using cottonwoods and willows. These trees will be planted on the southern edge of the fifty (50) feet barrier leil to protect the slough from mining. The cottonwoods are expected to be 6 to 10 feet high and will be planted on approximate 35 feet centers. The willows will be planted by cutting small branches from live trees and planting these sprigs along the bank of the slough. The willow sprigs will be on three (3) to live (5) feet centers. The operaror will plant the trees for the visual barrier as mining starts in an area. The trees used for the visual barrier are expected to provide a basis for infiltration of cottonwoods and willows into the reclaimed areas of the west property line to horse fence and slough to east property line mining aeeas thereby complementing the trees planted around the periphery of the ponds during reclamation. item 4 -Impact of renewable resource mining on heron rookery. The operator intends on mining the renewable resource area on an intermittent basis and only during low flow periods in the Colorado River. The low flow period is generally expected to be between October 1 and March 31. However, the low (low period will vary depending on snow pack and weather conditions in the drainage basin. As such the renewable resource azea operating schedule may vary from that mentioned above if the water level in the Colorado River is low enough to allow safe mining in the renewable resource area before or after the above mentioned dates. After the initial mining of the renewable resource area, the frequency of mining will be determined by the rate of rechazge and is expected to be variable ranging from as frequently as annually to as low as once every five years. The mirting of the renewable resource area in the fall and winter of the year is expected to have mitlimal impact on the heron rookery as the nesting usually takes place in the spring and summer. Item 5 -Native fish. The ponds aze incised anywhere from 15 to plus 30 feet. As such there is not any easy w•ay to completely drain the ponds other than pumping. The operator is considering x commitment to plant only salmonid species in the ponds to control the planting ofnon-native fish species. This approach is being considered since the ponds in the west property line [o horse fence, slough to east property line and Dry Creek ntutiug areas are in the 100 year floodplain and are expected to be covered by one to four feet of water if these type of high flows occur. In these high flow circumstances, outlet protection is iueffec,~tive and therefore is not considered. Item 6- Public Access. The operator does not wish to consider this public access to the reclaimed area at this time.