HomeMy WebLinkAbout1.0 Supplemental Info~JOE: F 1 ~2S 6
17 -79 1 .. U.S. DEPARTMEN ~Jf{GY
OAH" APR 27 19 82 memora:nd
Rl PL 'V T O EP-1
ATTN OF
suoJ£cr Environmental Assessment
Impact: Craig-Rifle 230
ro Robert L. McPhail, Administrator
Western Area Power Administration
Pursuant to its authorities under Department of Energy Order
5440.lA, concerning compliance with the National Environmental
Policy Act (NEPA), and in response to the request contained in
your memorandum of April 7, 1982, the Office of Environmental
Protection, Safety, and Emergency Preparedness has reviewed the
above material.
Th e environmental assessment (EA) describes the impacts of
strengthening and reconductoring an existing transmission line
to i n crease voltage and thereby improve reliability and allow
the transmission of power from new (already constructed)
generating facilities in western Colorado. Several structures
wo u ld b e mov e d ; ho wever, most of t h e ac t ivity would involve
i n s t a ll i n g ad d itional equipment on existing towers and all work
would t ake p l ace wi t hin existing rights-of-way and access roads.
A 3.5-mile lin e will be constru cted on new right-of-way between
t he Rifle substations of Western and Colorado-Ute. Impacts would
be minimal.
On the basis of our review of the EA, and after consultation
with the Office of the General Counsel, we have determined that
the EA is adequate and that the proposed action would not be a
major Federal action significantly affecting the quality of the
human environment, within the meaning of NEPA . Therefore , the EA
is approved for distribution to the public, and I have signed the
proposed Finding of No Significant Impact.
Office of the General Counsel
Concur J. Thomas Wolfe
tJ~
William A. Vaughan
Assistant Secretary
Environmental Protection, Safety ,
and Emergency Preparedness
Date 4/20/82
Date ------
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Environmental Ji. s s es sment and Proposed Finding or No Sign if leant
I mp act: Craig-Rifle 230 to 345 kV Transr:-iission Lj ne Uprate
Robert L. McPhail, Administrator
Western Area Power Administration
Pursua nt to its authorities under Department of Energy Order
54 40.lA, concerning compliance with the National Environmental
Policy Act (NEPA), and in response to the request contained in
your memorandum of April 7, 1982, the Office of Environmental
Protecti on, Safety, and Emergency Preparedness has reviewed the
above material.
The environmental assessment (EA) describes the impacts of
strengthe nin g and reconductoring an existing transmission line
to increase voltag e and thereby improve reliability and allow
t h e transmission of power from new (alr eady constructed)
ge n era ting faciliti es in western Colorado . Several structures
would be moved; however , most of the activity would inv olve
i nstalling additional equipment on existing poles and all work
would take place within existing right-of-way and access roads.
A 3.5-mile lin e will be constructed on new right-of-way between
the Rifle substations of We s tern and Colorado -Ut e. Impacts would
be minimal.
On the basis of our review of the EA, and after consultation
with the Office of the General Counsel , we have determined that
the EA is adequate and that the proposed action would not be a
major Federal action significantly affecting the quality of the
human environment, within the meaning of NEPA. Therefore, the EA
is approved for distribution to the public, and I have signed the
proposed Finding of No Significant Impact.
Off ice
Noncon
William A. Vaughan
Assistant Secretary
Environmental Protection, Safety,
and Emergency Preparedness
Date
Dat e ------
DEPARTM ENT OF ENERGY
FI NDING OF NO SIGNIFIC ANT IMPACT
Craig-Ri fle 230-to 345-kV Tra nsmi ssion Li ne Upr ate
Garfie ld , Moffat , and Rio Bla nco Counties, Colorado -
AGENCY: Western Area Power Administration, Department of Energy
ACTION: Proposed transmission line uprate, Craig-Rifle Transmission
Line, Garfield, Moffat, and Rio Blanco Counties, Colorado
SUMMARY: Western Area Power Administration (Western) has prepared an
Environ mental Assessment {EA) for the uprate of the existing 230-
kilovolt {kV) transmission line to 345-kV from Craig, Colorado, to
Rifle, Colorado. Based on the findings of the EA, the Department of
Energy (DOE) has detennined that the proposed action does not con-
stitute a ma j or Federal action si gnificantly affect ing the quality of
t he human environm e nt within the mea ning of the National Environ me ntal
Policy Act (NEPA) of 1969, 42 U.S.C. 4321 ~~· Therefore, no
environmental impact statement is required.
For further infonnation: The EA and further infonnation are available
to the public at the locations below :
Albert M. Gabiola
Area Manager
Salt Lake City Area Office
Western Area Power Administration
P.O. Box 11606
Salt Lake City, UT 84147
(801) 524-5493
Gary W. Frey
Environmental Manager
Western Area Power Administration
P.O. Box 3402
Golden, CO 80401
(303) 231-1527
SUPP LE MENTAL I NFORMA TI ON : As deta il ed in t he EA, t he existi ng 230-kV
tra nsmission system south of Craig has been serio usly over l oaded. To
alleviate the overloading, Western proposes to uprate the ~xisting
line by utilizing existing structures along the present right-of-way.
In order to accommodate the uprate, Western would strengthen the
existing towers, replace insulator assemblies, and add an additionai
conductor. Western anticipates that 18 structures would be replaced
or moved to provide electrical clearance. Western proposes to
terminate the uprate at an existing Colorado-Ute Electric Association
345-kV substation about 3.7 miles west of Western's existing 230-kV
su bstation by constructing a new 345-kV trans mission line seg ment, 3.7
miles l ong, bet ween the 345-kV and 230-kV substations. Thus, the need
to c on s tru ct a new 345-kV te rm inal facility will be po st pon ed. The
new 345-k V tra nsmission line seg me nt would eve nt ually ser ve as a tie
bet ween t he two substations.
A variety of alternatives were considered for the uprate including (a)
no action alternative, (b) system alternatives, (c) design alterna-
tives, and (d) location a.lternatives. System alternatives to provide
increased transfer capability included installing series compensation,
energy conservation, and constructing a new 345-kV transmission line.
Series compensation would not be feasible for operational and reli-
ability purposes. Energy conservation would only delay the need for
the uprate, and constructing a new 345-kV transmission line would not
be economically feasible at this time. Design alternatives included
2
movin g 52 towers, tra nsmi ssion line replace ment, undergrounding of
ca ble , and the use of nonspecula r conductor. Tra ns mission line
replacement and undergrounding would not be econo mically feasible
and would cause greater environmental effects. The moving of
structures would be more expensive and cause more construction
damage at more structure sites than the proposed action.
Five alternative routes including one or more of four new alignment
segments and the utilization of the existing route were investigated .
Each of the alternative routes would have required new construction ill
varying degrees along the new alignment segments. None of the alter-
native routes would offer significant environ ment al advantages ove r
uprating along the existing line. In many cases, the alternative
ro ut es would have greater i mp act potentials. The EA describes in
detail the location routes investigated.
Impacts to specific environmental parameters and mitigation measures
that will be taken are as follows:
Air Quality --Air quality will deteriorate slightly during the
construction period. The impact to air quality will be temporary
and localized in the areas immediately adjacent to the existing
alignment. The use of heavy equipment will cause exhaust emis-
sions and fugitive dust. Following the construction period,
disturbed areas will be reseeded so that no long-term fugitive
3
dust problems will re main. State and Environmental Protection
Agency (EPA) ai r quality standard s s hould not be exceeded . No
impact t o Cla ss I Air Quality Area s wi ll oc c ur.
Hy drolo gy --I mpacts to s urface and gro un d water hy drology due t o
co nstruction and maintenance activities will be very minor.
Pere nnial streams, intermittent streams, ditches, and unname d
streams within the preferred and alternative routes have be en ..
identified. The preferred route crosses the upstream end of
Mc Hatton Reservoir and, when at maximum capacity, is the on 1y
si gni f i ca nt surface imp oundm ent crossed. Existing trans mission
right -of -way will be ut i l ize d at t his l ocat i on. No i mpa ct to the
reservoir wil l oc cur. Pot e ntial f or erosi on doe s exi st, but
erosion control measure s imple ment ed during c onstruction wi ll
avoid thi s ha zard . Short -term increa s e s of su s pended sedimen ts
are unavoidab le and will oc c ur du ri ng c on s t r uc t ion . Wh ere t he
tra nsmission line crosses the Co l orado, White, a nd Ya mpa Rivers,
bank erosion is not expected to occur due to the wide, flat
to pogra phy of t he river valleys. I mpacts to the surface and
ground water quality could occur due to accidental spills of
fuels and wast~ materials. The construction contractor will be
requ ired to co mply with all Federal, State, and local water
pollution control regulations. Minimal impact to the hydrology
of the area will result from utilizing existing structures for
the uprate. No structure will be relocated or replaced near a
stream course.
4
Biologi c al Re s ou rces
Wildlife Wildlife and wildlife habitat will ~e minimally
affected by the uprate. During construction activities,
larger species will disperse. Individuals of smaller
species will be more severely affected by such activities
but general populations of the species will not. Impacts to
the local elk and deer populations will be min imal.
As a result of consultation with the U.S. Fish and Wildlife
Service, areas have been identified where construction
acti vities could affect the wintering habitat for the
endang ered bald eagle. The period when these i mpacts might
occ ur is betwee n Nove mber 15 and April 15. Western will
i mpl eme nt sc he du li ng specifications which will pro hib it
c on struction activities in the bald eagle wintering habitat
between Nove mber 15 and April 15. The uprate will thus
not jeopardize the continued existence of the bald eagle or
adversely modify its wintering habitat.
Vegetation --No federally protected plant species are known
to exist in the study area. During the construction period
vegetation will be impacted; however, these impacts will be
minor since right-of-way is already secured and access roads
already exist.
5
Earth Resourc es
Ge olo gy --Construction a nd mai nte nance wi ll have an
insignificant impact on geological resources . The presence
of landslide deposits where the existing 230-kV transmission
line is present will not pose a significant hazard. The
existing line crosses an inferred potentially active fault,
and minor seismic activity has been recorded in this region.
Geologic conditions are well known and due to the natur e of
co nstr uctirin no unforeseen impacts should occur .
Soil s --Cl earing of ve getation and the soil erosion
probl ems associa t ed wi th t he clearing of ve getatio n will be
li mited . Mi t iga t ing mea s ur es will be employ e d wh e n it is
nece ssa ry, a nd a ny l ong -te rm imp acts will be mini ma l and i n
most cases non existent. Fol low i ng co ns t r uctio n , a nd if
desired by t he la ndowner, soils that have been disturbed
will be reseeded and mulched .
Cultural Resources --A Cultural Resource Assessment has been
conducted including a literature and file search, a sample survey
of the alternate routes, and an intensive s urvey of the proposed
action. These investigations revealed that the general study
area has been inhabited for at least 10,000 years. This occupa-
tion is reflected in Archaic and Late Prehistoric Indian Sites
and Historic Sites. Three historic sites located in the ge neral
6
study area are currently listed on the Natio nal Register of
Historic Places (Register): the St. Ja mes Episcopal Church
and the Meeker Hotel, both in Meeker, and the Thornburgh Battle
Site, about 20 miles northeast of Meeker.
The sample survey of alternative routes indicated that potentially
significant sites could be located on any of the alternative
routes. The intensive survey of the proposed action located 29
sites and 10 isolated finds. Three prehistoric sites are poten -
tially eligible for inclusion on the Register, no sites are
currently listed.
Western will attempt to avoid any adverse impact to these sites
and if physical avoidance is i mp ossible, a data retrieval mitiga -
tion plan will be initiated. The Cultural Resource Assessmen t,
which was conducted by qualified professionals in consultation
with the State Historic Preservation Office, is being used by
Western to fulfill its responsibility for the consultation
process established by Section 106 of the National Histori c
Preservation Act.
Floodplain -Wetlands --In accordance with DOE's Floodplain/
Wetlands Environmental Review Requirements {10 CFR 1022), Western
has conducted a floodplain/wetlands evaluation for the proposed
uprate. Since Federal Insurance Administration Flood Hazard Zone
Boundary Maps were not available for all drainages crossed by the
7
proposed uprate, Western equated the flood hazard zone to the
physiographic floodplain boundary to e~sure the 100-year event
would be included in the evaluation. Palustrine wetfands are
traversed by the existing line and occur in the floodplains and
in association with stock ponds and reservoirs.
The existing Craig-Rifle line was constructed in floodplains/
wetlands in accordance with applicable floodplain design criter ia,
Eighteen existing structures are located in floodplains along t!1e
preferred route. These structures will be modified by adding new
steel members for strengthening, replacing insulator assemblie s,
qnd adding an additional conductor. By utilizing existing
structures and access roads, the potential for impact will be
low. Two additional structures that are located on the fringe of
a floodplain/wetland will require replacement and relocation.
This action has potential for moderate impact. The relocated
structures will be moved further away from floodplains/wetlands.
Three existing structures are located in wetlands along the pro-
posed uprate. Two of the three are located outside of a flood-
plain near irrigation ditches north of Flag Creek. The third is
located in the floodplain of the White River. None of these
structures will be replaced or relocated.
Western will implement erosion control measures in and near
floodplains/ wetlands to minimize erosion and will require the
8
use of existing access roads . In addition , Western will restrict
the use of he avy construction equirxnent in wetlands, and require
the restoration of any disturbed wetland sites to a rrear original
state to allow successional rehabilitation. The proposed action
will not destroy any wetland habitat and will be accomplished in
accordance with applicable floodplain regulations.
The location alternatives considered would require the placement
of new structures in floodplains. This action would have poten -
tial for moderate i mpacts. Two of the alternatives would span
fewer floodplains but would require mo re new co n struction in
floodplains and have a higher impact potential. Floodplains
co uld not be avoided with any of the location alternatives.
Western considered system alternatives that would not have
required construction in floodplains/wetlands; however, these
alternatives were not considered feasible for the reas on s given
above.
Land Use -Land Ownership --Since the uprate will utilize the
existing transmission line, the impacts that have already
taken place from the presence of the line will not be reduced
or increased over the long tenn due to the uprating of the
line. Imp act to local ranching activities should be negligible.
The proposal crosses some prime farmland and land of Statewide
i mpor tance. None of the alternatives would avoid these lands.
The transmission line will, therefore, continue to impact fanni ng
9
operations that are located near the existing lin e. No dire ct
impact will occur to existi ng urban areas. Few home s ar e
located near t he transmission line. Only a bou t 80 acres of
land will need to be acquired in easement for the new 345-kV
tra nsmission line seg ment between the 345-kV and 230-kV
s ub stations.
Socioeco nom ics --Overall socioeconomic impacts of construct i on
and operation of the proposed uprate will be minimal. Labor
need s will be spread over the length of the project. Much of
the construction labor force will be drawn from the local
area . Any increase in population resulti ng from this proje ct
will be te mpo rary a nd demand on publi c facilities will be
negligibl e.
Esthetic s --The vi s ual modi fications to the landscape fr001
con struction activities to uprate the existi ng line will be
tempo rary. The project will not increase the number of
str uctures that are already visible to the public.
Based on an evaluation of the EA which addresses the i mp acts to
the environ mental parameters discussed above, DOE has determined
that the proposed uprate of the Craig-Rifle transmission line
does not constitute a major Federal action significantly affecting
t he quality of the human environ ment as defined by NEPA, 42
U.S .C. 4321 et se q., and therefore, no enviro nment al i mp act
sta temen t is required.
10
Date Issued: ~ 2 '1,, / 'J 8 2.-
William A. Vau an
Assistant Secretary
Environmental Protection, Safety ,
and Emergency Preparedness
11
. . .
UNITED STATES
DEPARTMENT OF ENERGY
WESTERN AREA POWER ADMINISTRATIO~
CRAIG-RIFLE TRANSMISSION LINE
AGREEMENT WITH GARFIELD COUNTY, CO~ORADO,
FOR CROSSING CERTAIN COUNTY ROADS
THIS AGREEMENT, ffiade and entered into the ______ day of ________ _
19 , betv~een G.l\.RFIELD COUNTY, of the State of Colorado (COUNT Y), and th::
UNITED STATES OF AMERICA, Department of Energy, Western Area Power
Administration (UNITED STATES), represe nted by the officer executing the
agreeme nt, pursuant to the Reclamation Act, Act of June 17, 1902,
32 Stat. 388, and acts, amendatory thernf and supplementary -::hereto, and the
Energy Organization Act, Act of August 4, 1977, 91 Stat. 565.
WITNESSETH:
l~HEREAS, the United States will construct the Craig-Rifle Transmission Line,
hereinafter called the Transmi ss ion Line; a nd
WHEREAS, this Transmission Line will cross certain County roads in Garfie ld
County, Colorado.
NOW, THEREFORE in consideratio n of the stipu l ations and cov e nants herein
contained, it is agreed by and betwee n t he parties heret o as follows:
1. The County hereby grants to the United States the perpetual right to
construct, operate, and maintain said Tra nsmiss ion Line over an d across those
roads at tne three locations listed herein and as snown on exhibits
~and B, ~eing ~estern Area Power Administration (Western) Drawings
Nos . CRG-RFL-4117 anc CRG-RFL-6119 attached hereto and made a oart ~ereo~:
CRAJG-RicLE 7R4NS~!SSION LlNE
:.xhibit
A
B
c
Location
Transmission Line
Sta. 55 + 62.1 Centerline
County Road No. 315
s E & S \•! 1 I 4 , Se c . 1 7 , T . 6 S . ,
R. 92\~, 6th P. M.
Transmission Line Sta.
134 + 18.3 Centerline
County Road No. 333
NE 1/4 Sec. 24, T.6S.,
R.93\.!., 6th P.M.
Transmission Line
Sta. ~56 + 50.5, C~nterline
Cou11ty Road No. 319
E 1/1 NE 1/4, Sec. 23,
T.6S., R.93W., 6th P.M.
2. The United States will construct said Transmission Line without expense
to the County in acco rdance with ~estern 's standards for a 345-k V, 3-phase,
2
6C-hertz, steel tower, single-circuit trarsrn~ssior line wit~ a~uminu~
conducto r, steel reinforced, and two overheaa ground wires utilizing an
appropriate protective angle . Said ~ransmission Line is designe~ as specified
"in the !iational Electrical Safety Code for r1ediurn leading conditior.s , :,nd
clearances will be equal to or greater thar those specified in said Safety
Code. Any required changes in design and constructio n of said Transmission
Line over and across said roads differing from Code requirements will be as
~utu ally agreed between the County and the United States.
3. The Tra11smission Line will, at all times after construction, be operated,
maintained, repaired, and renewed by the United States without expense to the
County.
4. The United States will require its contractor to observe standard
regulations of the County with respect to handling of traffic, and to provide,
erect, and maintain all necessary barricades, suitable and sufficient red
lights, danger signals, and signs and to take all necessary precautions for
the protection of t he work a nd the safety of the pub lic.
5. If the United States dcr .• ges ti.e County 1 s pi--cjjerty \"hile constructing,
operating or n.aintaining said Transmis::iion Lirie, and fails to 1-2pair suc h
C.:ainage, t he County ~1ill be reimbursed for t he direct costs of repa ir i ng the
damage plus administrat iv e costs not to excee d 15 p~rce nt of t he direct
costs upon receipt of a certified cost stateme nt.
3
6 . The liability of the Unit ed States under this co ntract is conti ng e nt
upon the necessary appropriatio n and reser vatio n of fund s being mad e
t herefore.
7 . No member of or De l egate to Congress or Resident Commissioner s ha ll be
admitted to any share or part of this contract or to any benefit that may
arise herefrom, but this restriction shall not be construed to extend to
t hi s contract if made with a corporation or company for its general bene -
fit.
8. The terms of this contract shall inure to the benefit of and be bin -
ding upon the successors in interest and assigns of the parties hereto .
IN WITNESS WHEREO F, the parties hereto have executed this agreement as of
the date first above written .
(SE AL)
ATT ES T:
Chief Clerk
UNITED STATES OF AMERICA
By
=D ~ir_e_c~t-o_r_,~D~i~v~i -s~io_n __ o~f-L~a-n-a.....-----
Western Ar ea Power Adm inistration
COUNTY OF GARFIELD
STATE OF COLORADO
Commissioner
Commissioner
Co mmi ssioner
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