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Collection: Directories and Documents > Pamphlets
Environmental Impact Statement Draft - Highway 20 Between Penn Valley and Grass Valley (PH 16-4)(1973) (81 pages)
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Page: of 81
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existing Highway 20 at Penn Valley, Rex Reservoir Road
and Dead Man's Flat Road. The ultimate design provides
for interchanges at Penn Valley, Ring Road and Rex Reservoir and an overcrossing on Dead Man's Flat Road. (See
Alternate Map, Appendix C.)
2. Right of Way
The existing route has no definite right of way width established except for a small section in Grass Valley. The
length of the existing roadway is 7.8 miles in comparison
to 5.8 miles on the new alignment. It is proposed to acquire the ultimate right of way needed for the full freeway. This will require 278 acres with a minimum width
of 240 feet.
GENERAL DESCRIPTION OF SURROUNDING TERRAIN
1. Existing Environmental Features
The proposed project begins in the lower foothills of the
western slopes of the Sierra Nevada Mountains. This area
is generally rolling terrain covered with wild oats and
bunch grass. Live oak, blue oak and digger pine trees
are scattered throughout and are usually intermingled with
chamis, yerba santa, and manzanita. Appendix A includes
aerial photographs that show the proposed project's relationship to the local communities and natural features
of the area.
Summers here are usually hot and rainless with temperatures ranging from 75° to 96°. The winters are relatively
moderate with an average temperature of 29° to 42°. This
area is generally above the fog and has a rainfall of 15
to 40 inches.
The easterly end of the proposed project is located at
a higher elevation which is typified by white fir, douglas
fir, yellow pine and sugar pine trees. The terrain is
hilly, increasing in ruggedness and covered with thick
brush toward the western end of the project.
The elevation at the beginning of the project (Penn Valley)
is 1400 feet. The proposed alignment leaves Penn Valley,
approximately paralleling Grub Creek: crosses the creek
near Nevada Irrigation District's Rex Reservoir; follows
an easterly course along the north side of Grub Creek;
crosses Dead Man and Scadden Flats and ends at the interchange with Highway 49 in Grass Valley.
a ne ee eS SS.