HomeMy WebLinkAboutPrince of Wales Island Final Technical and Construction Report 2001I
ALASKA POWER & TELEPHONE COMPANY
DISTRIBUTION LINE ON
PRINCE OF WALES ISLAND, ALASKA
BBL HYDRO TO KASAAN INTERTIE
FINAL TECHNICAL AND CONSTRUCTION REPORT
GRANT AGREEMENT NO. DE-FC07-97ID13564
FOR I u.s. DEPARTMENT OF ENERGY
I
&
ALASKA INDUSTRIAL DEVELOPMENT
AND EXPORT AUTHORITY
POWER PROJECT FUND LOAN NO. 40901059
AUGUST2001
ALASKA POWER & TELEPHONE COMPANY
DISTRIBUTION LINE ON
PRINCE OF WALES ISLAND, ALASKA
FINAL TECHNICAL AND CONSTRUCTION REPORT
U.S. DEPARTMENT OF ENERGY
GRANT AGREEMENT NO. DE-FC07-97ID13564
&
ALASKA INDUSTRIAL DEVELOPMENT AND EXPORT
AUTHORITY
POWER PROJECT FUND LOAN NO. 40901059
AUGUST 2001
Prepared by
Glen D. Martin, Technical Writer
Jay Hansen, Project Manager
Alaska Power & Telephone Company
P.O. Box 3222
Port Townsend, WA 98368
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
TABLE OF CONTENTS
SECTION
1 -INTRODUCTION
1.1 -Location
1.2 -History
1.3-Key Features
1.4 -Chronological History
1.5 -Power Purchase Agreement
2-PROJECT FEASIBILITY AND PLANNING
2.1 -Introduction
2.2 -Initial Planning
2.3 -Permits
3 -PROJECT CONSTRUCTION
3.1-Survey
3.2 -Placing the Poles
3.3-Stringing the line
4-PROJECT COSTS
4.1 -Cost Estimate
4.2 -Funding Source
4.3 -Actual Costs
5 -APPENDICES
Appendix A-Project Features
Appendix B -Select Project Drawings
Appendix C -Project Photographs
p.2
3
3
3
4
4
7
8
8
8
9
10
10
10
10
11
11
11
11
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
SECTION 1
1.0 INTRODUCTION
1.1 LOCATION
The 35 miles of distribution line to connect the Black Bear Lake Hydro Project (BBL
Hydro) with Thome Bay, South Thome Bay, Goose Creek, and Kasaan is located in
Southeast Alaska, on Prince of Wales Island (POW), as shown in Figure 1. This
distribution line will now intertie Craig and Klawock with these communities, placing all
of them on the same power grid. Figure 2, in Appendix A: Project Figures, shows the old
and new distribution line.
The line was built within the existing road corridor. It tapped into the existing distribution
line on the Big Salt Road at the intersection ofFH-9 and the access road to BBL Hydro,
and proceeded north from that point to the intersection ofFH-9 and Forestry Road 30.
From here the line ran east to the intersection of Forestry Road 30 and the Goose Creek-
Kasaan Road. The distance between the intersection of the Big Salt Road with FH-9 and
the Goose Creek-Kasaan Road intersection with Forestry Road 30 is approximately 18
miles. The distribution line then proceeded approximately 17 miles to Kasaan, on the
Kasaan Peninsula. An additional six miles of line was added to this project, at AP&T's
expense, to reach Thome Bay from the intersection of Forestry Road 30 and the Goose
Creek-Kasaan Road.
1.2 HISTORY
With the completion of the Black Bear Lake Hydroelectric Project in 1995, which
brought a 3-phase, 34.5 kV distribution line north along the Big Salt Road from Klawock,
the possibility of interconnecting the communities to the north to this grid became
significantly higher and of greater interest to AP&T. This would allow these communities
to reduce, or eliminate, their reliance on diesel generators for power. The many small
industries in the Goose Creek Industrial Park operated their own diesel generators. This
created noise, air pollution, and the potential for fuel spills. Because of this there was a
great regional interest in bringing hydro power into the area, stabilizing rates in Thome
Bay and Kasaan, which had their own PUD's.
The reasons for connecting the communities of Thome Bay, South Thome Bay, Goose
Creek, and Kasaan with a 34.5 kV 3-phase distribution line are as follows:
~ To provide an environmentally friendly and renewable source of power
generation to meet the long term needs of these communities. As a result, this
action will avoid the burning of over 300,000 gallons of diesel fuel per year.
~ To provide Goose Creek Industrial Park and the South Thome Bay subdivision
with electricity.
p.3
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
~ To provide stable rates for consumers and competitively priced electric rates from
BBL Hydro to as many POW communities as possible. A decrease in the real cost
of power (as adjusted for inflation) by maintaining stable rates in nominal dollars.
~ To provide a more reliable source of power.
~ This project will further administration and legislative objectives of increased
rural self-reliance, long term economic growth, joint local/state participation in
infrastructure development, regionalization of rural energy systems and increased
use of renewable resources.
1.3 KEYFEATURES
As Constructed
Type of Project
Type of Line
Length
Equipment
Communities Added
Constructing Distribution Line
34.5 kV, 3-Phase
Approximately 35 Miles
2 -Substations (So. Thome Bay, Kasaan)
525 45 to 80-foot Wood Poles (55 foot on average)
130 Overhead Guy Stubs
740,000 Feet of Conductor
South Thome Bay (235 lots), Goose Creek
Industrial Park (27 industrial sites), Kasaan, and an
additional 166 lots in Kasaan that originally did not
have power. Thome Bay was also added, but was
paid for by AP&T.
1.4 CHRONOLOGICAL HISTORY
1. 1988-AP&T investigates possible purchase of Thome Bay electric utility.
2. 1992-AP&T enters into negotiations with Thome Bay to purchase utility.
3. 1995-AP&T completes construction ofthe Black Bear Lake Hydro Project.
4. 1996-AP&T receives DOE grant for $947,000 and a State of Alaska grant
for $300,000.
p.4
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
5. 1996-AP&T receives a Power Project Fund Loan from the State of Alaska
Division of Energy for a zero interest loan of $1,200,000.
6. Summer 1997-Thome Bay signs a contract to purchase power from AP&T.
7. Summer/Fall 1997-ADF&G reviews route and project placement of
facilities.
8. January 1998-USFS permit received in second week of January.
-Alaska DOT permit is applied for to construct from Control
Lake to Thome Bay.
-Staging area at Goose Creek is fenced in and ready for
materials.
-Construction begins.
9. February 1998-Poles and anchors installed from beginning ofthe new road,
south ofControl Lake, to the junction at Control Lake (about 3.5 miles).
-Contractor cutting ROW has completed the Control Lake
stretch, and is approximately 75% done with the section from
Control Lake junction to Goose Creek.
10. March 1998-Conductors strung on the above 3.5 mile stretch.
11. April 1998-5.7 miles ofline have been completed. Cutting in ROW is nearly
complete.
12. May 1998-Larger digger-derrick unit arrives.
13. June 1998-Total of completed line is 8 miles. All poles are set for the
remainder of section 2 (5.5 miles). Preliminary staking has been done for the
remainder of section 1 (from BBL access road to the start of the new line
south of Control Lake).
14. July 1998-Total of completed line is 11.3 miles. Federal Highways has
approved the pole placements for the remainder of section 1, and has been
submitted to Alaska DOT for approval. DOT permit application to construct
from BBL Hydro access road intersection with FH-9 to Control Lake was
submitted.
15. August 1998-Total of completed line is 14.4 miles. Work began on the 3.8-
mile stretch between the BBL Hydro access road and the beginning of the new
blacktop south of Control Lake.
p. 5
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
16. September 1998 -All poles are set on the section of line between the BBL
Hydro access road and the beginning ofthe new blacktop south of Control
Lake. Two pulls of conductor have been strung and tied in, leaving about 1.4
miles to complete. Voltage regulators to be installed at Goose Creek have
been delivered.
17. October 1998-Line between the BBL Hydro access road and Goose Creek
was completed on October 15. The two-pole structure for the Goose Creek
regulator setting has been set and framed up.
18. December 1998-Weather caused outages and field conditions have severely
impeded progress in December.
19. January 1999-Total of23 miles of poles set without blasting. Poles and most
materials are on site for the Goose Creek Industrial Park.
20. February 1999-On February 23, the completion of the line from BBL Hydro
to Goose Creek allowed Thome Bay to be switched from diesel generated
electricity to hydro-power from BBL Hydro. After 13 months of construction,
24 miles of 34.5 kV line was installed with all the associated equipment
(regulators, meters, substation, switching).
21. April 1999 -Poles are set for 1.5 miles along the South Thome Bay Road,
and about a mile of conductors are in place. Four tap lines have been
constructed to serve customers in the Goose Creek Industrial Park.
22. July 1999 -Begin serving Goose Creek Industrial Park. Build-out into the
industrial park is complete also. The tree removal is complete to the South
Thome Bay Road (5 mile on the Kasaan Road), poles are framed, and the
crew is setting poles at this time. Staking is over 50% complete for the 12-
mile stretch from South Thome Bay Road to Kasaan.
23. Autumn 1999-Complete construction of 34.5 kV to South Thome Bay Road.
24. January 2000 -Construction of 6.9 miles of distribution line into the South
Thome Bay Subdivision is proceeding. This 12.5 kV system, which takes
power from the Kasaan line, will make power available to over 200 lots.
25. July 2000-The distribution line is complete and energized as far as the South
Thome Bay access road. Spacers were added to approximately 21 miles of
line to alleviate problems associated with snow build-up at the higher
elevations.
26. November 2000-Complete distribution system in South Thome Bay.
p. 6
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
27. April2001-Complete construction of34.5 kV to Kasaan.
28. July 2001-Begin serving Kasaan from BBL Hydro.
29. 2001 -Thome Bay voters go to polls to approve sale of electric utility to
AP&T.
1.5 POWER PURCHASE AGREEMENT
Alaska Power & Telephone Co. (AP&T) entered into a contract with the Kasaan power
utility, Tlingit & Haida Regional Electrical Authority (THREA), to purchase their
generation and distribution assets in Kasaan. AP&T has been given the authority to
provide power to Kasaan by the Regulatory Commission of Alaska (RCA). AP&T is now
the power utility for Kasaan.
AP&T entered into a contract to purchase the Thome Bay power generation and
distribution assets and supply power, at a lower rate, to the citizens of Thome Bay. The
City and its voters separately approved this sale. AP&T is now the power utility for
Thome Bay, with final approval by the RCA expected by early September 200 1.
p. 7
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
SECTION2
2.0 PROJECT FEASIBILITY AND PLANNING
2.1 INTRODUCTION
The 35 miles of distribution line to connect the Black Bear Lake Hydro Project (BBL
Hydro) with Thome Bay, South Thome Bay, Goose Creek, and Kasaan is located in
Southeast Alaska, on Prince of Wales Island. This is a 34.5 kV, 3-phase distribution line.
In Figure 2, the existing and newly constructed distribution lines are shown. This
distribution line also allows the sharing ofbackup diesel generation from several central
locations if the hydro project is down for maintenance.
The extension of the distribution system to Kasaan is the result of AP&T's goal to
provide clean, environmentally friendly, reliable, and competitively priced electricity to
all communities on POW. This pole infrastructure may also allow for the future
installation of high speed fiber optic cable to bring these communities into the world of e-
commerce, which may help stimulate their economies.
2.2 INITIAL PLANNING
Even before the Federal Energy Regulatory Commission (FERC) issued a license for the
Black Bear Lake Hydroelectric Project, Project No. 10440, on November 9, 1993, AP&T
had been investigating the possible purchase of other electric utilities on POW. Once the
BBL Hydro project was on line, with a distribution line up the Big Salt Road from
Klawock, customers on the Kasaan Peninsula and Thome Bay were significantly more
interested in becoming AP&T customers. Part ofthis is AP&T's ability to keep its
electric rates lower than many other utilities in Alaska.
Once AP&T had a power sales agreement with the City of Thome Bay, and Federal and
State grants and loans were made available to AP&T, this intertie was able to move
ahead. AP&T entered into an agreement to purchase Thome Bay's electric utility in
2001.
This distribution line called for 35 miles of wood poles that would be spaced
approximately 15 poles per mile. There would be an additional 6 miles of poles to reach
Thome Bay that was jointly funded by a $300,000 grant from the State of Alaska and by
AP&T. New substations were installed at South Thome Bay, and Kasaan.
The 34.5 kV distribution line would begin at the junction with the BBL Hydro access
road and FH-9 road. From this intertie with the existing 34.5 kV distribution line the line
would go north to the vicinity of Control Lake and the intersection of Forestry Road 30.
The line would then follow Forestry Road 30 to the Goose Creek-Kasaan Road. The total
distance from the start of this new line to the Goose Creek-Kasaan Road would be
approximately 18 miles.
p. 8
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
The distance to Kasaan from the intersection of Forestry Road 30 and the Goose Creek-
Kasaan Road is approximately 17 miles. About 5 miles in on the Goose Creek-Kasaan
Road is the turnoff to the South Thome Bay subdivision. This subdivision will require
feeder lines to 235 residential lots. The Goose Creek Industrial Park will currently require
one feeder line to 27 industrial customers. The Goose Creek Industrial Park is an area of
small industries, many of which are operating sawmills. The remainder of the road to
Kasaan is mostly undeveloped.
All of the distribution line will be within DOT right-of-way.
2.3 PERMITS
January 1998-U.S. Forest Service Special-Use Permit received.
Alaska Department of Transportation permit is received.
Mountain Man Cutting awarded contract to do the ROW clearing.
p.9
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
SECTION3
3.0 PROJECT CONSTRUCTION
3.1 SURVEY
The route for the distribution line was determined using GPS and laying this data on an
electronic map from DOT.
3.2 PLACING THE POLES
For clearing the right-of-way, the route was chain-sawed, slash-busted, and backhoed.
To place each pole, a backhoe, digger derrick truck, and three men were used. The
backhoe dug the hole and the digger derrick truck held the pole plumb in the hole while
the backhoe refilled the hole and compacted the soil at the same time. Every pole on this
route was able to be installed using this method. Anchors were installed using the digger
derrick truck. These anchors sometimes had to be reinstalled because of the muskeg, wet
conditions, and rocky soils.
3.3 STRINGING THE LINE
Using regular line-stringing guidelines, four ropes were pulled from a trailer, through
four stringing blocks at each pole that were placed at the same elevation as the final
placement of the conductor. These ropes were pulled to a wire reel trailer and connected
with the conductor. The ropes were then pulled back through the stringing blocks to the
rope trailer, one at a time. The wire reel trailer kept tension on the conductor while it was
pulled so that the conductor did not sag.
p. 10
DISTRIBUTION LINE ON PRINCE OF WALES ISLAND
SECTION 4
4.0 PROJECT COSTS
4.1 COST ESTIMATES
The budget for the project are itemized below:
);;> Poles
);;> Conductor
);;> Other Material
o Total Material
);;> AP&T Direct Labor
);;> Fringe Benefits
);;> AP &T Vehicle Costs
o Total AP&T
);;> Contract Linemen » Independent Contractor:
o ClearROW
o Excavator
o Flagging
o Blasting
);;> Switching
);;> Regulators
);;> Metering
• Total
o Subtotal of Costs
);;> G&A Costs@ 14%
» Contingency @ 10%
o Grand Total
4.2 FUNDING SOURCE
Funds to pay for this project are as follows:
);;> Federal Grant -Department of Energy
);;> State Grant-AIDEA
);;> PPF Loan
o Grand Total
» Additional funds, if needed, were pledged by AP&T.
4.3 ACTUAL COSTS
$335,381
$173,213
$203,437
$712,031
$203,210
$93,477
$105,669
$402,356
$342,090
$253,500
$157,500
$61,400
$45,000
$517,400
$115,000
$25,000
$60,000
$2,173,877
$304,343
$217,388
$2,695,608
$947,000
$300,000
$1,200,000
$2,447,000
The actual costs incurred totaled approximately $2,500,000 or 7% below the total budget.
p. 11
APPENDIX A:
APPENDIXB:
APPENDIXC:
SECTIONS
5.0 APPENDICES
Project Maps-1. Project Vicinity
2. Area Map
Select Project Drawings -One Line Diagram
Project Photographs-Photos of Distribution Line
DISTRIBUTION LINE ON
PRINCE OF WALES ISLAND, ALASKA
FINAL TECHNICAL AND CONSTRUCTION REPORT
APPENDIX A
PROJECT MAPS
(THE MAPS ARE REFERENCED THROUGHOUT THIS DOCUMENT)
FIGURE 1·
140' 138'
58'
0
56'
54'
138' 136'
PROJECT VICINITY MAP
136' 134' 132'
134'
130'
60'
58'
56'
54'
130'
/ / / --\ R . --I i I j . F~ I '"' , q;, I I I ~ I ii' " :i
:_\
-I
I
' _,
,~··-·o· /tt .: ;; ' -1.:---.~·-~ ' '
; .1~., •• ""-: ~ 'V / '
~ ... ,_
DISTRIBUTION LINE ON
PRINCE OF WALES ISLAND, ALASKA
FINAL TECHNICAL AND CONSTRUCTION REPORT
APPENDIXB
SELECT PROJECT DRAWINGS
(DRAWINGS SHOWING AS-BUILT INFORMATION)
VIKING ..-.1 V-3 I LUMBER L..:=...l
Wc:GRAW TYPE FIX
Oil REClOSER
15.!\kV 400A
zav
PHOENIX
LOGGING
CUI.IUINS/IIAAATHON
WOllE!.. KTA-50
1281kVA 102$<W'
2.4kV O.II'F
1800 RPM
INDUSTRIAL I
PARK
CATJI<ATO woo£L 3!116
1474kVA 11801<111'
2.4kV O.i!IPF
1200RP!.I
CATJI<ATO
1100£l 3516
1419f<VA 1136i<W
2.4kV O.i!IPF
1200RI'III
CRAIG
POWER PLANT
CATII<ATO
l.tOOEL 3512
750kVA 600!cW
2. 4k v O.i!IPF
1200RP!.I
(!12: ~g
u§S
~~ 0
VACUUM CIRCUIT
llRI!)I(ER
!lkV 1200A
VACUUM CIRCUIT
llREAKER
5kV 1200A
VACWII CIRCUIT
!lftfl\KER
!lkV 1200A
t (l.Jl] t ST. NICHOLAS
DISTRIBUTION
[ll.Q]
O!SCONNECT DtSCONNECT 1 1 15kV 200A 15kV 200A
SUBSTATION XfliR ...,.., -....
4-1Pli 125a<VA ·.;. '.,!,
2<100-7200V = . . = .I:IUIU ~ A-~ 1"1'1"1"\ A 'l'i 1"1'1"1"\ ~A 4&frf/277V "' •• , •• .,. •• , •• 4.HIY2.4kV
SUBSTATION
FEEDER
VAC~~~UfT
(\k\1 12001<
1---M/DOLE FEEDER
, "'I 'l!il
1111
li
VACUUII CIRCUIT )!!.! ~
ere~/ iii!
TOWN I FEEDER
12.47Y ~
AIR CIRCUIT
BREAI<l!1l
411011 .30ilOAr
[§..0)
KLAWOCK
TOWN
FEEDER
VACUUM CIRCUnlmJ BREAKER
l!lkV 12001<
BLACK BEAR
POWERPL.ANT
KLAWOCK
AIRPORT 3_100kVAR
f'EEOCR CAPACITOR BANK
I.OCIITED 0
l<l.loWOCI< IIAU.
f-11•
STATION SEFMCE
TRANSFORIIER
7!!i<VA
<!60/2n-41eo\l "*-A ~J~~o~~~
CAT/CAT
11000: 3304
112kVA 90kW
4801277V O.ePF
1800 RPW
CAT/CAT wooo: 3304
112kVA OOI<W
48CI277V o.ePF
1800 RPW
' ', !!~1
1111
11';::;"1 INOICAll:S BRI:AkER OR CIE'IICE L!:::::::...l WITH S'INCHRONIZING CAPASIUTY
r .. ., n1 IHOICAT'ES APPftOX!W.TE LINE
"""'"-".! DISTANCE F'RON CRAIG ~
VOLTAGE
REGUlATOR
J-100kVA 19.9Kv
'1i,
GOOSE CREEK
INDUSTRIAL --..... i------1 T-51 I
PARK t...;;:::;J
DISCONNECT
~~ I
I]Q.A)
I<ASMN
lRANSFORioiER
3-75kVA
19t2o-277V
"'*""*
S. THC!oRHE BAY
'l",j, \.oLLv 'T-f~.fR · = 19920-noov "*T ~-~
SOUTH
THORNE BAY
CAT/CAT
WOOEI. 3512
1112kVA IIOOkW
480/2nV O.II'F
f800 RPW
CAT/CAT
lotOOEI. 3412
~VA 325kW
48Cf~2nV 0.81'1' .200 RPW
S AIR CIRCUfT
I:IREAKER
1!00\1 12CIOO.T
~
3-ISOkVA
480-2400\1
~l.lt--sou~END ...___, il ...___, l-.,...
~~IIER All CIRCUIT ~~
4160/2400-411011 600\1 lOll<.
__.L.....o AI~~ FOREST ____.311 SERVICE~
STATION
SERVICE
0
R£V
1!00\1 25Qj1,T
VILLAGE
FEEDER
OOIGINAl ISSUE
~
Bb
AIIIH
-..-A
l'W.NSFORW£R 41ti0~/;_48fN ~~IT NO~IlY ENO-iiiC ~
'11-·A
TIRE SHOP,
F1.0ATS
~
All CIRCUIT
BRDI<ER
800V 225A
r-----1
AIR CIRCUIT
BRfAKER
600\1 1!10A
r-----1
LP
WAREHOUSE
LP SHOP
SINGLE UNE METERING AND TRANSMISSION
CRAIG TO KASMN
PRINCE OF WALES ISLAND
'HI~ISMPfa1011"raf
AlASKA POW£R a. TELEI'HOIC COWPAHY
1fl Ol'TO nw:r' P.O. BCD( ,JI:II ,.,.., 'I'CINmiD.,.,..,..... ....
DISTRIBUTION LINE ON
PRINCE OF WALES ISLAND, ALASKA
FINAL TECHNICAL AND CONSTRUCTION REPORT
APPENDIXC
PROJECT PHOTOGRAPHS
(PHOTOGRAPHS SHOWING ALL PHASES OF PROJECT)
FH-9 near access road to BBL Hydro
Forestry Road 30
Crew Placing Poles and Stringing Conductor
I
Excavator being hauled in to clear right-of-way
I
City of Thorne Bay
metering station
'
I
Typical pole configuration
Substation at the beginning of the road to
the South Thorne Bay subdivision.
Corner pole on FH-9
I
I
Industrial sites along the
Kasaan Road that are
now supplied by hydro
power instead of
diesel generators
Distribution line at end
of Kasaan Road; last
pole on line.
H-Frame voltage regulator
structure along Forest
Service Road 30.
Goose Creek Industrial sites along the Kasaan Road
Spacers used to keep ·
conductors apart when ... .;·~,et~-
loaded with snow
Last pole of distribution line
at Kasaan next to ·~ ... ,,., n"'li:.r .o..-............. ,
Step-up transformers
next to Kasaan
powerhouse