WSP01576

• File Number: 8220.100.50
• Description: CRSP
• Basin: Colorado Mainstem
• Date: 3/1/1988
• Title: Replacement Resources Processes - Final Methods Report - Appendices
• Water Supply Pro - Doc Type: Publication

~

,

-

United States Department of the Interior

",l
Wi

IN RlPLYREFU TO:

NATIONAL PARK S~RVICE
Water Resources Di~sion ~' '" r,
1201 Oak Ridge Drive'iSuite 25 O~ ~ Cl1/'Y
Fort Collins, Colorado 80525 ,
llEe 1 S 19.94 I DEe 2 3 1994

1.54(479)
ORCA/OLCA
Olen Canyon Dam EIS

Jeffrey McCoy
Western Area Power Admjnj~tration
POBox 11606
Salt Lake City UT 84147

" ""-
't ;;;a .......
'..". ~~~--
.. .f" . ',*....~, ...r.'.'r_,'
.....".....""'t. rJ.....b~_..... \.
t?6~_ .~,~-+..
'. --.!-..v-- r
: ~-'-"""1'
, I ,
, ..'1"'..........-.....,...-
,
f= ./

...

Dear Mr. McCoy:

L.

i .
The National Park Service attended the publi~ meeting in Denver on November 18, 1994,
concerning the Olen Canyon Dam replacementiresources process. This was our introduction
to the replacement resources process and we pffer the following general comments.

1. Assessment of Environmental and Relate(l Issues: The National Park Service is very
interested in the replacement resources process. Seven National Park units (Curecante
National Recreation Area, Black Canyon of ~e Ounnison National Monument, Dinosaur
National Monument, CanyoDlands National P,ark, Olen Canyon National Recreation Area,
Orand Canyon National Park, and Lake Me~d National Recreation Area) exist either in
direct association with, or downstream fronh hydroelectric generating projects. Certain
replacement power alternatives could change ~ake levels and instream flows in National Park
units, and the Service is concerned tha, environmental, recreational, cultural, and
operational issues associated with these chaIiges be thoroughly evaluated. Numerous other
park units are located in the Colorado Plateau region. Their air resources could be affected
by changes in operations of fossil fuel gene~ators. It was not clear to us where, or how, in
this process environmental and related issuFs will be addressed.

,
,
2. Options Not Considered: Thereplacemlent resources process does not seem to include
options for reducing constraints at Olen cinyon Dam, which could stem from such things
as sediment augmentation and controlled ~ooding, but which would have to be evaluated
as part of the Olen Canyon Dam Adaptive Management process.

3. Colorado River Annual Qperatini {'Ian: Will any of the options evaluated affect the
Colorado River Annual Operating Plan? ! In other words, will alternatives be considered
which affect the monthly or annual aIloc~tions of water between Colorado River storage
units, or will they deal strictly with chang~s in daily operations of hydroelectric generating
facilities?

.
-

.