Vegetative clearing and overburden removal were not necessary for 

 the removal of the sandy gravel with some cobbles and boulders. A I 5-m 

 buffer was maintained between the work area and main channel of Phelan 

 Creek; this natural buffer was augmented by dikes across depressions and 

 minor channels. A dike was constructed at the upstream end of the site to 

 divert intermittent channel flow and an outlet channel was provided at the 

 downstream end of the gravel removal area to facilitate drainage. Material 

 was removed to a 0.9-m working depth with conventional loading and hauling 

 methods; permafrost was not present but ripping with dozers was necessary 

 for excavation of seasonally frozen ground. Similar working depths, excava- 

 tion methods, and diversion/buffer procedures were used during development 

 of the upstream expansion. 



The site apparently was not rehabilitated, because several dikes and 

 one stockpile remained during the time of the site visit in 1978. Various 

 aspects of this site are shown in Figure 90. 



65 



