A material site investigation conducted prior to removing gravel report- 

 ed we I l-rounded gravel with some seams of fine sand and an absence of perma- 

 frost in test pits. Approximately 38,000 m of select material was produced 

 from a screening operation and stockpiled outside the material site working 

 limits. Rehabilitation of the site following completion of the gravel remov- 

 al activity did not include seeding or revegetation of the leveled gravel 

 due to the likelihood of periodic flooding. Various aspects of this site are 

 shown in Figure 6. 



Jim River. The Jim River is a medium, sinuous river which originates 

 at an elevation of 880 m and flows about 96 km before emptying into the 

 South Fork of the Koyukuk River. The study area is located 37 km from the 

 mouth at an elevation of 275 m. 



Material removed from this site was used for the construction of facili- 

 ties associated with the Trans-Alaska Pipeline. An access road (90 m in 

 length) was constructed connecting the site to the Haul Road. Vegetative 

 cover and underlying organics were removed. Gravel extraction was accom- 

 plished by scraping about II ha, yielding an estimated 200,000 m of gravel. 

 The site was worked during winter to a level below the water table. As a 

 result, the site was inundated during summer, leaving, at the time of the 

 survey, a shal low pit consisting of two ponded segments, approximately 5 and 

 I ha in size with a maximum water depth of 1.2 m. The former high-water 

 channel now flows continuously through the site thus connecting the pit area 

 with the main Jim River. 



Restoration began during the fal I of 1976. The site was contoured, 

 including sloping the banks on the south, north, and west sides of the 

 site, and revegetated. The excavated depression was filled in restricting 

 water to the east side of the gravel removal area and reducing the inun- 

 dated pit area to I ha by 1978. Various aspects of this site are shown in 

 Figures 7, 48b, and 78. 



Prospect Creek. Prospect Creek is a medium, meandering stream which 

 originates at an elevation of about 600 m and flows 40 km to its conflu- 



57 



