PERMFILE116212

• Permit No: C1981071
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: PART 779 PAGE 109 TO 216
• Media Type: D
• Archive: No

Section 779.20 (c) Continued.
• Due to lack of adequate flow in the Rrass and weed c}ioked channel
of Foide] Creek above Reservoir No. 1, only one dredge sample was
taken. Two dredge samples were subsequently taken in early July,
1979 from the reservoir as it is the most important aquatic habitat
in the upper reaches of Foidel Creek.
Surber samples were taken in duplicate from representative habitat
where flow was sufficient. Each sample represented one square foot
of bottom area. Duplicate Ekman dredge samples were taken from
representative pool habitat. Each Ekman sample consisted of two
grabs and thus was equivalent to one-half a square foot. A total
of 15 aquatic macroinvertebrate samples were collected.
In the field, each Ekman dredge sample was placed in a sieve
bucket (No. 30 mesh) and rinsed of excess silt and debris. The
samples were placed in wide-mouth polypropylene jars, labeled and
• preserved with 10 percent formalin. Surber samples were similarly
treated, labeled, and preserved with 10 percent formalin.
In the laboratory, samples were rinsed of excess formalin in a
standard No. 30 sieve and sorted from the debris in white enameled
pans. Sorted organisms were placed in 70 percent isopropyl alcohol
with glycerine. Samples were then identified and enumerated with
the aid of a dissecting microscope (7-80X). Specimens of the
family Chironomidae (midge larvae) were mounted on slides in CMC-10
mounting medium and identified under a compound microscope.
Identifications were made to the lowest taxonomic level practicable
using the following references: Usinger (1956), Edmonson (1959),
Brinkhurst (1968), Beck (1976), Edmunds, et. al. (1976), Wiggins
(1977), and Pennak (1978).
Data calculated were density (ll/ft2), percent relative abundance,
• diversity (d), maximum diversity (d max), and equitability (E).
779-145