2018-08-30_PERMIT FILE - C1982057 ‎(3)‎

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 8/30/2018
• Section_Exhibit Name: TAB 11 WILDLIFE
• Media Type: D
• Archive: No

small numbers. Five taxa of green
algae,
including the pollution tolerant and ubiquitous
•
species Scenedesmus quadricauda, were also
found. S n_y edra minuscula was the most abundant
The drainage immediately below
of the 21 diatom taxa, accounting
for 80.3 percent of the total periphyton at the upper
geology report of
Sage Creek Station. The number of
species
was substantially lower in downstream samples,
(63.6 percent), a
which were dominated by various species
of
Navicula.
of this species only
Upper and lower Dry Creek locations (Sites D-1 and D-3) exhibited different periphyton
assemblages. In May, upper Dry Creek was dominated by S ny edra minuscula and lower Dry
Creek was dominated by Surirellaap tella. Various species of Navicula accounted for 64.6
percent of the total periphyton at lower Dry Creek in November. Navicula viridula and
S ny edra minuscula were important species common to both locations.
Hubberson Gulch (Site D-2) supported
Surirellaap tella
(51.5 percent) and Fragilaria
virescens (32.1 percent) as the most
abundant species.
The drainage immediately below
drill hole 220 as depicted within the
geology report of
this permit to mine application
was dominated by Meridion circulare
(63.6 percent), a
species which prefers flowing
water of less than 15°C. The dominance
of this species only
at this location was probably
due to the excellent temperature and flow
conditions afforded by the constant cold water
•
discharge of the well.
In summary, a great deal of variation was observed in the species composition of
periphyton assemblages. This was probably caused by the normal mosaic distribution of
periphyton species throughout the many microhabitats of the stream systems. Pollution
tolerant diatoms were the most important members of the periphyton at all locations.
Overall, Synedra minuscula, Navicula viridula, Navicula minima, Surirellaatp ella,
Fragilaria virescens, and various other species of Navicula accounted for most of the
periphyton observed.
Although there were signficant differences in certain water quality parameters between
Sage Creek and Dry Creek, most of the important species occurred at some time in both
systems.
Benthos - Streams. A species list of benthic macroinvertebrates collected in the spring
and autumn from streams draining the Seneca II -W study area is presented as Table 11-29.
This list represents a rather diverse assemblage of benthic fauna. •
26