HomeMy WebLinkAboutPower Creek Final Technical and Construction Cost Report 2002FINAL TECHNICAL AND CONSTRUCTON REPORT
POWER CREEK HYDROELECTRIC PROJECT
CORDOVA, ALASKA
Submitted to the U.S. Department of Energy Idaho Operations Office
on behalf of the State of Alaska under
DOE Contract# DE-FC07-97ID13561
Submitted by:
Cordova Electric Cooperative, Inc.
Prepared by:
Summit Construction Consultants
2100 124th Ave Northeast
Suite 113
Bellevue, W A 98005
May2002
TABLE OF CONTENTS
Section Page
1.0 INTRODUCTION . ........................... ......................... ............................... .... .. 1 -1
1.1 General .. . ... . . .. . . .. . . .. . .. .... . .. ... . . . . . .. . . .. .. .. .. .. . .. . ... .. . . . . .. . .. .. . .. . .. .. . .. . . .. . . . .. . .. . .. . . 1 -1
1.2 Background . .. .. . .. . . .. . .. . . . . .. . . . . .. .. . .. .. . . .. .. . . . . . . .. .. . .. .. . . . . .. .. . . .. .. . . . . . . .. . 1 -1
1.3 Power Creek .......................................................................................... 1 -2
2.0 PROJECT......................................................................................................... 2 -1
2.1 General ................................................................................................. 2-1
2.2 Pre Project History Time line ................................................................. 2 -1
2.3 Power Creek Final History Time line ................................................... 2 -3
3.0 PROJECT DESCRIPTION ............................................................................... 3-1
3 .1 General . .. .. . .. .. .. .... . .. . ... .... .. .. ... .. .. . .. .. . . .. .. . . . ... ... .. . .. .. . . . .. .. . ... . . .. .. . .. . .. .. . ... . . . 3 - 1
3.2 Access Road . ... .. . .. .. . . . . .. .... . .. ... .. .. .. .. . . . .. . .. ... .. . ... . .. .. .. .. .. .. .. .. .. . .. . . .. .... . . .. . .. 3 -1
3.3 Intake ..................................................................................................... 3 -2
3.4 Control Building .................................................................................. 3 -2
3.5 Penstock ............................................................................................... 3 -2
3.6 Tunnel .................................................................................................. 3 -3
3. 7 Powerhouse .. .... ........... .... .. ...... ... .... ... .. . ....... ....... ....... .. . ... . ........... ... ..... 3 -3
3.8 Transmission Line ................................................................................ 3 -3
Summary of Project Features ................................................................ 3-4
4.0 PERMITS AND LICENSES ............................................................................ 4-1
4.1 FERC Related ........................................................................................ 4 - 1
4.2 Alaska Resource Agency-Related ....................................................... .4-1
4.3 Summary of project permits .................................................................. 4-2
5.0 PROJECT MANAGEMENT ........................................................................... 5 - 1
5.1 Organization ........................................................................................... 5 -1
5.2 Organization Chart ................................................................................ 5 -2
5.3 Key Personnel ........................................................................................ 5 -3
6.0 PROJECT COST .............................................................................................. 6 - 1
6.1 FERC Uniform System of Cost Accounts for Hydroelectric Projects ... 6 - 2
7.0 PROJECT ENERGY PRODUCTION .............................................................. 7-1
7.1 Cordova Historical Loads ..................................................................... 7 -1
7.2 Existing Power Supply ........................................................................... 7 -1
7.3 Utilization ofPower Creek Generation ................................................. 7-2
APPENDIX A:
APPENDIXB:
May2002
Project Construction Photos
Selected Project Drawings
Power Creek Hydroelectric Project
1.0. INTRODUCTION
1.1 General
Cordova Electric Cooperative, Inc. (CEC) provides electrical power to the community of
Cordova, Alaska. Cordova's year round population of approximately 2,700 residents are
located on the eastern edge of Prince William Sound in south-central Alaska approximately 160
air miles east of Anchorage. The town's population doubles in the summer months with the
influx of fisherman, seasonal workers and tourism. Although once connected to interior Alaska
points with a railroad, there have been no overland (road or rail) connections to interior roads
and population centers for several decades. Transportation to Cordova generally consists of
scheduled air service to Anchorage or Southeast Alaska, bi-weekly ferry service within Prince
William Sound and barge service from Washington state origins.
Cordova's principal industry is fishing and fish processing. It has been the main port and home
to fishermen and processors for Prince William Sound and the Gulf of Alaska. However,
Cordova lost about half of its canneries and fish processors in the late 80's and early 90's due
to higher energy and transportation costs than other communities in Prince William Sound. For
Cordova to maintain its fishing dominance, it needed to reduce its cost of power, or lose the
balance of its fish processors and its main economy.
Whitewater Engineering Corporation (Whitewater), after assisting CEC in completing the
Humpback Creek project in 1991, saw an opportunity to provide inexpensive energy from a
run-of-the-river project on Power Creek, and filed for a FERC preliminary permit as an
Independent Power Producer.
Whitewater, CEC and The Eyak Corporation agreed that the best way to deliver the cheapest
energy to the rate payers in Cordova was for Whitewater to license, design and construct the
Power Creek project, for The Eyak Corporation to O\\'ll the land and assist in obtaining federal
and state grants for the project, and for CEC to own and operate the project once completed.
1.2 Background
In 1978, CEC began providing power generated by diesel generators located within the
community of Cordova. Fuel for the generators is transported via barge from refineries in the
Lower Forty-Eight. By using the new renewable energy source, the 6 MW Power Creek
Hydroelectric Project, CEC will reduce consumption of an estimated 900,000 gallons of diesel
fuel annually, improve air quality, reduce consumer power costs, and benefit businesses in this
remote Alaskan community.
Upon the completion of a 1.25 MW hydroelectric power plant at Humpback Creek in June of
1991, between 15 and 25 percent of Cordova's annual power needs were met with
hydroelectric power. The Humpback Creek hydro site is located about 5 miles north of town.
Prior to the mid 1950's a 125 kW hydro plant was operated on Humpback Creek by the Alaska
May2002 Power Creek Hydroelectric Project
1 -1
Public Utilities Company in the general vicinity of the existing facility. Humpback Creek's
"run of the river" (no storage) power output is subject to seasonal flow fluctuations.
During the 1990's Cordova's peak power demands neared 5 MW during the summer/fall fish
processing season with approximately 4 MW of that power supplied by (2) 2.5 MW diesel
generators. Thus a need remained for continued pursuit of additional hydroelectric power.
1.3 Power Creek
The drainage basin of Power Creek is located in the Chugach Mountains and has an area of
about 22 square miles and extends 8 miles from the basin rim to the shore of Eyak Lake.
Elevations in the headwater mountains reach 4,600 ft. and the elevation of Power Creek at its
confluence with Eyak Lake is 20 feet.
Power Creek rises from an unnamed glacier at the head of the basin and flows approximately 5
miles through a broad alluvial plain named Surprise Valley. In this reach, Power Creek is a
braided meandering stream with a gradient ranging from 30 to 80 ft. per mile. From the end of
Surprise Valley, Power Creek flows through a narrow rock-walled gorge dropping over 300
ft/mile before the gradient lessens about 1.6 miles from the lake.
On May 22, 1996 CEC and Whitewater entered into an agreement for Whitewater to license,
design, and construct the Project for CEC.
The FERC license for the Power Creek Project was issued on December 24, 1997 to
Whitewater for a period of 50 years (until December 1, 204 7). The license authorized
construction, operation, and maintenance of the project, subject to numerous license articles.
On May 7, 1999, WEC transferred the license to CEC as stipulated in a prior agreement
between CEC and Whitewater.
Acting as the owner and licensee, CEC issued a notice to proceed to Whitewater to begin
construction of the 6 MW hydroelectric power plant with construction of access roads
beginning in October 1998. The power plant was placed into commercial operation on January
1, 2002.
May2002 Power Creek Hydroelectric Project
1-2
2.0 PROJECT HISTORY
2.1 General
Numerous parties have tried to develop hydropower on Power Creek dating back to as early as
1906. Project ideas ranged from small run-of-the-river facilities in the early 1900's to
dam/reservoir projects to take advantage of Surprise Valley's storage potential. The more
recent push for hydropower began after the 1973 oil crisis, when the city of Cordova
commissioned several engineering firms to investigate alternative energy possibilities.
The Humpback Creek hydroelectric project arose from those pursuits and was immediately
followed by Power Creek. Initial conceptual designs in the early 1990's went through several
idea phases including a dam storage project to temper anticipated seasonal flow shortfalls with
the spring and fall abundance of water. In 1991, the project design began as a 3.5 MW facility
to make up the remaining diesel generated power at peak demand. By 1997 the design grew to
its completed capacity of 6 MW to accommodate potential growth. The storage concept was
eventually abandoned as high risk due to potential seepage control problems. Selection of
intake and powerhouse locations were dictated by the natural features at the end of Surprise
Valley and the spawning limits of salmon in Power Creek.
2.2 Pre Project History Timeline
1906 three different parties argued over ownership of Power Creek, so the Cordova Power
Company built the original hydroelectric project at Humpback Creek instead.
1908 Harry Knox of the Alaska Electric Consolidated Company (AECC) claimed a site for a
powerhouse on a tract of land on the right side of Power Creek, % of a mile above Eyak Lake.
He also claimed rights to water "to be taken from this location on Glacier (Power) Creek".
1908 Harry Ohman, a Swedish emigrant lived at the millsite to begin development of the
property for AECC. Knox's original plans included a dam and intake for a flume, 860 feet of
tunnel, 6000 feet of wood stave pipe.
1908 -1922 Ohman excavated and timbered about one hundred feet of tunnel and cleared
about the same for the pipeline right of way. The intake was at a small beaver pond on the
north side of Power Creek. The project was abandoned and the portal collapsed in 1951.
1911-1912 a flow meter was installed in Power Creek to monitor the daily flow for power
generation.
1913 USGS put a gauge in Power Creek, and intermittently monitored the flow until1947.
1915 a study on hydropower potential for south-central Alaska states that Power Creek was one
of the four most promising sites to construct a hydropower plant.
May2002 Power Creek Hydroelectric Project
2-1
1918 Knox files a petition to extend his permit, claiming World War I had interfered with his
construction plans.
1919 1920 three additional applicants filed for water and power development rights on Power
Creek. Eventually the rights were awarded to Alaska Public Utilities, the local Cordova power
utility, because it was perceived to be better prepared to develop the site. In the end, the utility
did no additional hydroelectric development on the creek.
1947-1993 continuous monitoring by the USGS for stream flows start and would continue at 15
minute intervals.
194 7-1949 the Corps of engineers did a feasibility study to build a hydroelectric project at
Power Creek.
194 7-1966 several governmental agencies performed feasibility studies to construct a project at
Power Creek including core drill tests, geological studies and economic analysis.
1966 A & L Engineering proposed to build a 50 foot high dam 2.5 miles above Eyak lake with
a tunnel, pipeline and penstock to a 1.8 MW power plant which could be enlarged to 2.7 MW.
1967 Alaska Geological Consultants published the Preliminary Geological Investigation of the
Power Creek Hydroelectric Project, Phase I. The study indicated a proposed dam constructed
at the site could have excessive seepage from the reservoir.
197 5 Harstad-Galliett proposed to construct a 140 foot high dam at mile 3.2 with a second
stage 160 foot high dam at mile 6.8. Alternatively a 165 foot dam could be built at mile 4.6 if
the mile 3.2 site was not feasible. The project consisted of one or two powerplants with a total
capacity of 15 MW.
1977 Marks Engineering proposed to construct a low diversion dam at mile 3.2 with a tunnel
pipeline and penstock to first-stage 5 MW run-of-the-river powerplant with a second stage
increase to 1 0 MW.
1977 Galliett proposed to construct a first-stage 5 MW project per Marks' concept with a
second-stage 165 foot dam at mile 5.2. Second-stage powerplants totaling about 10 MW would
be installed at the dam or at the first stage powerhouse.
1980 US Army Corps of Engineers completed calculations of permeability rates in boreholes at
Power Creek Hydroelectric Project.
1982 US Army Corps of Engineers completed the Small Power Interim Feasibility Study,
Cordova, Alaska.
1982 Alaska Power Authority spent approximately $4,000,000 to have Stone and Webster
perform a feasibility study to build a hydroelectric project for Cordova, recommending Power
Creek and Silver Lake with a transmission line connecting them.
May2002 Power Creek Hydroelectric Project
2-2
1989~1991 Alaska Division of Water studied the stream flow in Surprise Valley for the Eyak
Corporation, who was considering construction of a hydropower project at Power Creek.
2.3 Power Creek Final Project History Timeline
July 7, 1993 FERC issued a preliminary permit to Whitewater to license Power Creek.
May 22, 1996 CEC signs a contract with Whitewater to license, design and construct Power
Creek and then transfer the FERC license to CEC.
December 24, 1997 FERC issues a license to Whitewater to construct and operate Power
Creek. The license will expire December 1, 2047.
September 30, 1998 CEC issued a "Notice to Proceed" on construction of the Power Creek
Hydroelectric project.
October 1998 Whitewater started construction of access roads to access the Power Creek site.
May 7, 1999 Whitewater transferred the Power Creek FERC license to CEC.
November 6, 2001 Power Creek generates electricity for the first time.
January 1, 2002 Power Creek is placed into commercial operation.
May2002 Power Creek Hydroelectric Project
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3.0 PROJECT DESCRIPTION
3.1 General
Water enters the project at a concrete intake structure which features an inflatable rubber weir
designed to maintain the intake water elevation at 420 feet. The intake structure is located at
the lower end of Surprise Valley as the river enters the narrow rocky gorge. After passing
through steel intake screens water enters a 7·foot diameter 650·foot long section of buried steel
pipeline which crosses under Power Creek before narrowing to a 6 feet 4 inch diameter pipeline
at a tunnel portal. From the portal concrete saddles support the pipe as it winds 3000 feet
through a 10-foot horseshoe tunnel. At the lower portal the pipeline diameter is increased to 7
feet and continues buried for 200 feet before crossing Power Creek, exposed, on a 150·foot
pipeline bridge. From the bridge the pipe continues buried for 2000 feet to the powerhouse
which houses two 3 MW turgo turbines located at an elevation of 120 feet. A rip-rap channel
carries the tailrace water the final 100 feet back into Power Creek about 2 miles upstream of
EyakLake.
Power Creek's completed hydroelectric facilities main features include access roads to the
intake and powerhouse, an intake structure, a control house at the intake, penstock, tunnel,
powerhouse, and transmission line. These features are further described below.
3.2 Access Roads
Three permanent access roads have been constructed: 1) 12,300 foot long intake access road.
2) 1,100 foot long powerhouse access road, and 3) 1,850 foot long lower tunnel portal access
road.
The intake access road begins near a pre-project gravel pit at about mile 6 on the Power Creek
Road and rises from an elevation of about 30 feet to an elevation of about 700 feet in its first
mile before dropping to the intake area (elevation 420 feet).
The pre-project Power Creek Road ended adjacent to Power Creek just below the project site.
A hiking trail continued from the roads terminus to Surprise Valley. A powerhouse access road
was constructed which followed the original alignment of the Power Creek trail adjacent to
Power Creek.
Extending from the powerhouse site, an access road continues adjacent to the penstock which
provided temporary access (during construction) from the powerhouse to the lower tunnel
portal. A temporary bridge was constructed across Power Creek to complete this road. Due to
avalanche considerations the deck of the bridge has been removed but the superstructure
remains in place. The deck has been stored for future use if needed.
All access roads exclusive of the bridge are gravel roads approximately 15 feet wide.
May2002 Power Creek Hydroelectric Project
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3.3 Intake Structure
A concrete intake structure has been built at the lower end of Surprise Valley at the point where
the gentle sloping valley converges into a steeper narrow rocky gorge. For 100 feet upstream
and downstream of the weir the natural channel has been lined with 2 foot plus diameter riprap.
The diversion dam consist of a 20 foot long concrete channel base supporting an 8 foot
diameter inflatable rubber dam which stretches approximately 65 feet across the width of the
channel. Water levels upstream of the dam can be maintained near an elevation of 420 feet by
inflating or deflating the rubber dam as stream flows dictate. Four 5'x12' intake screens
parallel the river flow on the north side of the river and divert flow into a concrete channel
which funnels water to a steel penstock cast into the intake concrete.
3.4 Control Building
A 16-foot by 20 foot precast concrete control building has been positioned over the steel
penstock 15 feet downstream from the beginning of the penstock. A 7-foot rectangular steel
slide gate marks the beginning of the penstock. Controls for the slide gate are housed in the
building. The control house contains compressors and controls for the inflatable rubber dam, a
hydraulic power system to operate the gates and valves, and instrumentation for relaying water
levels and dam air pressure.
3.5 Penstock
After passing through steel intake screens, water enters a 7 foot diameter buried epoxy-lined,
exterior wrapped welded steel penstock. The pipeline continues approximately 250 feet where
it crosses under Power Creek then extends another 400 feet before narrowing to a 6 foot 4 inch
diameter pipeline where it enters the upper tunnel portal. From the portal concrete saddles
support the pipe as it winds 3,000 feet through the 10-foot diameter tunnel. As the penstock
exits the lower portal, the pipe diameter is increased back to 7 feet and continues buried for 100
feet before crossing Power Creek, exposed, on a 150-foot pipeline bridge. From the bridge the
pipe continues buried for 2,000 feet to the powerhouse. After the water passes through the
turbines, a rip-rap lined tailrace channel carries the water the final 100 feet back into Power
Creek.
Although this bridge crossing has been designed to withstand impact forces from a possible
avalanche, CEC would like to bury the pipe under the river at this location. They have filed an
amendment with the Federal Energy Regulatory Commission to complete this work and as of
the date of this report, they are still waiting approval.
The penstock saddles used within the tunnel were an innovative design utilizing a foam grout
mix and pre-made woven polypropylene sealed bags as the concrete forms. The lightweight
foam grout was pumped over 1 ,800 feet through a 2-inch line to fill each bag placed 20 feet on
center throughout the tunnel length. As each bag filled, the flexibility of the polypropylene
fabric allowed each saddle to mold to the rough invert of the tunnel and also support the
penstock in excess of 120 degrees. Reinforced concrete thrustblocks were installed throughout
the tunnel length to provide adequate thrust restraint.
May2002 Power Creek Hydroelectric Project
3-2
3.6 Tunnel
In order to install the penstock from the intake to the powerhouse, a 3,000-foot long by 10-foot
diameter tunnel was driven through the Chugach Mountains by traditional drill and shoot
methods. Shotcrete lining stabilizes the ceiling and walls of the tunnel which is also reinforced
with hundreds of rock bolts.
The upper portal is sealed with an 18 inch thick concrete wall and has a watertight marine
access door installed. There is also a manway access pipe for entering the tunnel at the lower
portal. By utilizing the access manways, inspections within the tunnel can be completed on a
routine basis.
3. 7 Powerhouse
The powerhouse was constructed on the north bank of Power Creek and positioned on a bench
at an approximate elevation of 114 feet. The tailrace consists of a riprap lined open trench
which empties into Power Creek at approximate elevation 102 feet adjacent to the powerhouse.
The powerhouse substructure consists of reinforced concrete and is 100 feet long by 40 feet
wide. The substructure includes turbine discharge pits and electrical conduit and piping as
required.
The powerhouse superstructure consists of a pre-engineered metal building that is 1 00 feet long
by 40 feet wide and 30 feet high. A 15-ton overhead bridge crane was integrated into the
powerhouse structure to aid in construction and maintenance of the facility.
The powerhouse houses two identical turbine/generator sets with a total installed capacity of
six megawatts. The turbines are twin jet turgo-type impulse turbines manufactured by Gilkes,
Inc. The 4,160 volt generators are horizontal-shaft machines rated at 3 MW each with
sufficient inertia to allow picking up a 500 kW load with a frequency dip of less than 0.5 Hz.
The powerhouse also houses associated controls, switchgear, turbine valves, hydraulic power
systems, and a 120 kW standby diesel generator. The switchgear and controls contain utility
grade components. A power transformer is located outside the powerhouse structure, and steps
the voltage up from 4.16kV to 24.QkV. The powerhouse is SCADA integrated allowing the
plant to be remotely operated from town.
3.8 Transmission Line
The stand-alone project is not tied to a grid. Instead, 7 miles of 24.9 kV transmission line
carries the electricity from the powerhouse to the Eyak Substation and onto CEC's power grid.
The primary 24.9kV transmission line is buried in the access road from the powerhouse to the
parking lot at the Power Creek trailhead. The buried line then continues down the existing
Power Creek Road right-of-way for approximately 2 miles to the edge of Eyak Lake. From
there, the line is submerged in Eyak Lake for approximately 5 miles where it connects with the
existing utility system at the Eyak Substation in Cordova.
May2002 Power Creek Hydroelectric Project
3-3
Summary of Project Features
Project Feature Description
Name ofProject Power Creek Hydroelectric Project, FERC No. 11243
Project Location 7 miles northeast of Cordova, Alaska
Owner Cordova Electric Cooperative, Inc.
Capacity 6MW
Average Yearly Output 30 GWH, 17.5 GWH used by CEC.
Head 303 feet
Average Streamflow 255 cfs
Maximum Turbine Flow 320 cfs
Project Cost $23,760,000
Turbines (2) Turgo, twin jet impulse turbines manufactured by Gilkes, Inc.
Generators (2) 3 MW, 4,120 hp, 4,160 volts, 3-phase, 60 hertz manufactured by
TECO-Westinghouse.
Electrical Clifton Digital speed/load governor
GE Fanuc PLC controller
GE Multilin Solid State protection unit
Siemens, SkV, 1,200 amp switchgear
Powerhouse 100 ft long, 40 ft wide, 30 ft high
Steel frame building with insulated sheet metal exterior.
Penstock ASTM Al39 welded steel, welded bell joints, epoxy lining and
exterior coating supplied by Northwest Pipe
3,000 ft. of 84 inch diameter
3,000 ft. of 76 inch diameter
Mechanical Valves supplied by Liberty/ Rocky Mountain Pipe
Hydraulic Power Systems by Canyon Industries
Tunnel 3,000 ft long, 10 ft diameter horseshoe section with reinforced
shotcrete lining.
Tunnel construction by Mainstreet Mining Company
Dam Inflatable Bridgestone rubber bladder
8 ft high, 60 ft wide
Intake Structure Riverside intake, reinforced concrete
50 ft wide, 5 ft deep
Automatic trash cleaner
Tailrace 100 ft long, 50 ft wide
Trapezoid section lined with geofabric covered with riprap
Transmission 37,300 ft of24.9-KV, 3-phase line to CEC's (isolated system)
2 miles buried, and 5 miles are submarine cable in Eyak Lake
May2002 Power Creek Hydroelectric Project
3-4
4.0 PERMITS AND LICENSES
The Power Creek project has been the subject of extensive licensing and permitting activity.
These have generally fallen into two separate categories: 1) FERC related and 2) Alaska
Resource Agency-Related. Initially, the project proceeded under primary direction from the
Federal Energy Regulatory Commission (FERC) in Washington D.C. Under FERC's auspices,
the following Permits and Licenses were issued:
4.1 FERC-RELATED
1. A Preliminary Permit, issued to Whitewater Engineering Corp. (WEC) of Bellingham
W A, under which to do preliminary feasibility work. In 1994, a second Preliminary Permit
was issued to WEC to finalize the License Application, which was submitted to FERC in
December 1997.
2. A FERC Order Issuing License ("FERC License") issued in December 1998. At the
time of FERC License issuance, the project ownership had been transferred by contract
from WEC to CEC in effective May 7, 1999.
The FERC License contained several License Articles, requiring various operational and
environmental activities including preparation of numerous environmental plans addressing
construction and long-term monitoring.
3. In addition to the FERC license and its articles, CEC has applied for and received, from the
FERC, two License Amendments. These involved:
• Changes in the location of the project powerhouse and other nearby project features;
and
• Changes in the transmission line proposal from an aboveground to an underwater
routing beneath Eyak Lake.
Both of these Amendments were accompanied by their respective Amendment Articles,
regulating construction period and long-term operation practices and monitoring.
At the time of this report, CEC is in the process of applying to the FERC for a third License
Amendment, for changes in the routing of the project pipeline in the area of the downstream
tunnel portal.
4.2 ALASKA RESOURCE AGENCY-RELATED
In addition to the FERC Licenses and their associated Articles, the Project has also been issued
several Permits, Certifications and Determinations by various Alaska state and federal resource
agencies. Table 1 identifies these permits and their respective issuing agencies. This Table
was updated in September 2001. It is presented to document the major Permits, Determinations
May2002 Power Creek Hydroelectric Project
4-1
and Certification obtained by the licensee, and is subject to change frequently. Also, the
permits in the Table may have expired; they are shown as documentation of the extent to which
CEC has complied with the need to obtain and work under all required permits.
n Water Act Section
404 Permit
Clean Water Act Section
401 Water Quality
Certification
Water Rights
(temporary, for
construction, permanent
for long-term water use)
Fish Habitat Permit For
areas Upstream of
Ohman Falls.
Fish Habitat Permit For
Area Downstream of
Ohman Falls
Re: Request to DA
Permit Mod for Gravel
on
Permit for re-routing
Intake Access Road.
Fish Hab
May2002
Summary of project permits
Issued December 31,
1997, Expires Nov 30, 2000.
Ref to above COE 404 permit,
Issued November, 21, 1997, no
expiration date shown.
Temporary Permit #TWUP A98-04
issued January 13, 1998, Expires
February 28, 2000. Permanent
Permit Pending, to be issued after
construction.
#FG 97-11-0741. Issued August
12, 1998, Expires December 31,
1999.
#FG 98-11-0564. Issued August 20,
1998, Expires December 31, 2000.
etter of October 22, 1998,
Authorization Refers DA Permit No.
970547,
State ID # AK 9709-08AA. Issued
November 17, 1998, No Expiration
Date Shown.
epartment
of Environmental
Conservation
(ADEC), through
the Section 404
Permit Aoolication.
Alaska Department
of Natural
Resources (ADNR),
Division of Mining
and Water
Manaaement.
aska Department
of Fish and Game,
Habitat and
Restoration
Division
ADF&G
Alaska Division of
Governmental
Coordination
Power Creek Hydroelectric Project
4-2
Fish Habitat Permit for Permit No. FG-99-11-0053. Issued ADF&G
Blasting At February 12 1 1999, Ex~ires
Downstream Tunnel December 121 1999.
Portal.
Fish Habitat Permit for Permit No. FG-99-11-0053. Issued ADF&G
Powerhouse tailrace. February 12 1 1999, Ex~ires
December 12 1 1999.
Fish Habitat Permit for #FG-99-11-0113 1 Issued by: letter of ADF&G
Powerhouse and March 24, 1999 1 no Ex~iration
Staging Area. Date On Letter.
Fish Habitat Permit for Permit No. FG-98-11-0651. Issued ADF&G
Powerhouse tailrace. February 3, 1999, Expires
December 25, 1999.
Fish Habitat Permit for #98-11-0564 (Amendment I). Issued ADF&G
Placement of A~ril 81 1999 1 Ex~ires A~ril 30,
Permanent Bridge 1999.
Piers.
Modification of DA 404 Permit No. N-970547, Issued A~ril DA
Permit to construct a 2* 1999 (dates of issuance and
powerhouse staging expiration are illegible on my
area, temporary and copy. Assume ex~iration Nov. 30,
permanent bridge and 2000 as shown on original DA
associated cofferdams. Permit #4-970547 .).)
Nationwide Permit for NWP for Utility Lines. Issued A~ril DA
Underwater 29, 1999, No Ex~iration Date
Transmission Line. Shown.
Modification of DA 404 Permit No. 0-970547. Issued May: DA
Permit for temporary 13, 1999 Assume ex~iration Nov.
construction access 30, 2000 as shown on original DA
ramp. Permit #4-970547 .).
Fish Habitat Permit for #99-11-0564 (Amendment II). ADF&G
One-Time Stream Issued May: 14, 1999, Ex~ires
Crossing and Diversion June 14, 1999.
I Channel Excavation
Final Consistency State 10 Number AK 9904-22AA. Alaska Division of
Determination for Issued June 9, 1999, No Governmental
Underwater Ex~iration Date Listed. Coordination.
Transmission Line. (DGC)
Fish Habitat Permit for # FG-99-11-0255. Issued June 17, ADF&G
Underwater 1999, Ex~ires June 17, 2000.
Transmission Line.
Fish Habitat Permit for #FG-99-0511, Issued August 4, ADF&G
Stream Crossings 1999 (Appears this is a
Upstream Of Ohman determination that no permit was
Falls needed)
~-
May2002
4-3
Power Creek Hydroelectric Project
Fish Habitat Permit for #FG 99-11-0614, Issued November ADF&G
Transmission Line 4 1 19991 Ex~ires December 31 1
Across Eyak Lake. 2000.
Fish Habitat Permit for #FG 99-11-0616, Issued November ADF&G
Powerhouse Tailrace. 4 1 19991 ExRires December 31 1
2000.
Fish Habitat Permit for #FG 99-11-0613. Issued November ADF&G
gravel removal 11 1 19991 ExRires December 31 1
upstream of Ohman 2000.
Falls (modification of
previous permit).
Fish Habitat Permit for #FG 99-11-0636, Issued December ADF&G
repair of west bridge 101 19991 Ex~ires February 151
pier 2000.
Fish Habitat Permit for #FG 99-110636, Issued March 3 1 ADF&G I
repair of west bridge pier 20001 Ex~ires March 31 1 2000. I
!
Fish Habitat Permit for #FG 00-11-0153. Issued ARril 5 1 ADF&G
repair of west bridge 20001 Ex~ires December 31 2000.
pier.
Fish Habitat Permit for #FG 00-11-0154. Issued A~ril 6 1 ADF&G
excavator operation for 20001 Ex~ires ARril 301 2000.
snow removal and
I
bridge repair
Fish Habitat Permit for #FG 00-11-0154, Amendment I. ADF&G !
debris Issued A~ril 7 1 20001 ExRires A~ril
removal/equipment 3012000.
I
ford.
Fish Habitat Permit for #FG 00-11-0154, Amendment Ill. ADF&G
I debris removal, Issued May 191 20001 Ex~ires May
equipment ford. 311 2000.
Fish Habitat Permit for #FG 00-11-0614, Amendment I. ADF&G
Utility Line Placement Issued June 5 1 20001 Ex~ires
December 31 1 2000.
Modification of DA Permit Modification to USACOE Permit No. DA
to Excavate Material to N-1997-0547. Issued June 7 1
Construct 2000 1 No ex~iration date shown 1
Cofferdams ... assume Nov. 301 2000 as shown
on original DA Permit #4-970547.
Fish Habitat Permit for #FG 00-11-0612, Issued June 131 ADF&G
Stream Diversion/Dam 2000 1 Ex~ires December 31 1 2000.
Fish Habitat Permit for #FG 00-11-0436, Issued June 29, ADF&G
Transmission Line 20001 Ex~ires December 31 1 2000
Blasting
Fish Habitat Permit for #FG-00-11-0538, Issued Se~tember ADF&G
Stream Diversion/Dam 29 1 20001 ExRires March 31 1 2001
-
May2002 Power Creek Hydroelectric Project
4-4
Fish Habitat Permit #FG 99-11-0616, Issued January ADF&G
Amendment for Tailrace 29 1 2001 1 ExQires December 31 1
(Redesign, 2001.
Rehabilitation)
Fish Habitat Permit for #FG 01-11-0043, Issued February ADF&G
Material Removal 7 1 2001 1 ExQires December 31 1
(upstream from dam & 2001
stream diversion)
Modification of DA Permit Modification to USACOE Permit No. DA
'
for place rip-rap N-1997-0547. Issued AQril 51
portions of Power 2001 1 this verification valid until
Creek stream banks February 11 1 2002.
NPDES Storm Water #AKR 1 08081, Issued Ma~ 4 1 2001. US Environmental
Construction Permit Protection Agency
---
May2002 Power Creek Hydroelectric Project
4-5
5.0 PROJECT MANAGEMENT
5.1 Organization
This section identifies the key construction management personnel and chain of command used
during the administration of the project, as well as quality control and inspection
responsibilities. The attached organization chart shows the key project team members involved
with the project quality control and turnkey design build contractor and related chain of
command. A description of each member's role and responsibilities follows in this section.
The scale and location of this project was such that initially it did not require or warrant full-
time on-site inspection to oversee project construction and to perform the required field
material tests. On an as-needed basis, full-time inspection was provided during those phases of
the project by each specific discipline.
Federal
Energy
Regulatory
Commission
Envioronmental
Compliance Monitor
ADF&G
D. Ryland
I
[!.Qencles 1
Civil Inspector
DE&S
F. Bulgin
S. Tatum
February 2002
r---
Power Creek Hydroelectric Project
FERC Project No. 11243
Cordova Electric Cooperative (CEC)
Organization Chart
Licensee
Cordova Electric Cooperative
Ken Gates -General Manager
Contract Admin I I I CEC
Summit Consultants Mgr-Admin & Fin
Don Hammelman Valerie Covel
Environmental
Inspector
SRF
G. Covel
Mech I
Electrical
Inspector
DE&S
Turnkey Design
Build Contractor
Whitewater Engineering
Thorn Fischer
Tunnel
Inspector
Consultant
K.deRubertis
Tunnel
Inspector
DE&S
N. Strandberg
Project Manager
Q. c. Inspector
Duke Engineering
Jack Snvder
Testing Lab
R&M
Consultants
Testing
Lab
X-Ray Inc.
Power Creek Hydroelectric Project
5-2
Key Personnel for the Power Creek Hydroelectric Project
Mr. Ken Gates, General Manger, Cordova Electric Cooperative As the General Manager
for Cordova Electric Cooperative, Mr. Gates had the overall responsibility for the project,
particularly the engagement of project personnel in the quality control activities, management
and funding for the Power Creek Project. Mr. Gates had the primary responsibility for daily
contract with the design build contractor, the Owner's operations personnel, regulatory
agencies, the landowners and the quality control inspection team. In conjunction with the CEC
Board of Directors, Mr. Gates and the Board approved all change order requests based on
recommendation from project personnel. Mr. Gates was also the key individual in obtaining
project funding in the form of short term borrowing, loans and grants.
Mr. Jack Snyder, Project Manger, Duke Engineering & Services Mr. Snyder was named the
project manager in April 2000 and was also the Quality Control Inspector for the project. Mr.
Snyder planned and directed the activities of the inspection and testing personnel. Mr. Snyder
reviewed the project construction and design of the design-build contractor. After the license was
transferred to Cordova Electric in May of 1999, Mr. Snyder was the lead liaison in working with
the agencies and permitting requirements. Mr. Snyder also served as the electrical inspector and
start-up and testing inspector. Mr. Snyder scheduled project meetings and coordinated field
inspection and off-site materials testing. Mr. Snyder reviewed design changes or claims involved
with the design build contractor and assured compliance with the FERC licensing requirements.
Mr. Donald Hammelman, Contract Administration, Summit Construction Consultants Mr.
Hammelman produced the monthly construction project report to the Owner, agencies and
institutions involved in the project. Mr. Hammelman was also responsible for requesting the grant
funds and recommended for payment the monthly progress billing by the design build contractor
to the Owner. Mr. Hammelman also produced the quarterly project cost reports and administered
and negotiated the resolution of the project insurance claims.
Mr. Thorn Fischer, Whitewater Engineering Corporation, Licensing-Design-Build
Contractor Mr. Fischer is the President of Whitewater Engineering Corporation and was
responsible for the licensing, design and construction of the Power Creek project as the turnkey
design build contractor. Mr. Mike Prewitt led the licensing effort and Mr. Larry Coupe and Mr.
Stephen Fischer the engineering during the licensing and design phase. During the construction
phase, Mr. Dick Potter and Steve Beers were the project superintendents and Mr. Steve Marmon
was the project manager for Whitewater Engineering.
Ms. Valerie Covel, Manager Admin and Finance, Cordova Electric Cooperative Ms. Covel
had the overall responsibility for recording the project costs for the Owner, Cordova Electric
Cooperative.
Mr. Fred Bulgin, Civilffunnel Repair Inspector, Duke Engineering & Services Mr. Bulgin
was the inspector during the tunnel repair during the summer of 2001. Mr. Bulgin provided on-
site field inspection of the intake structure and tunnel repair. Mr. Bulgin reported to Mr. Snyder
and was responsible to ensure that engineering and design was followed during construction. Mr.
Bulgin also directed and ensured the required testing was completed.
May2002 Power Creek Hydroelectric Project
5-3
Mr. Scott Tatum, Civil Inspector, Duke Engineering and Services Mr. Tatum was the civil
inspector during the summer and fall of 2000 and provided inspection on the powerhouse,
diversion and intake structure. Mr. Tatum also inspected the penstock for compaction at the upper
portal and thrust blocks in the tunnel.
Mr. Kim de Rubertis, Tunnel Consultant Mr. de Rubertis was the tunnel inspector and
primarily responsible for inspecting the tunnel for the Owner and reviewed recommendations for
upgrading the tunnel with additional supports, lining and placement of penstock pipe. Mr. de
Rubertis also reviewed the costs associated with the change.
Mr. Neil Strandberg, Tunnel Inspector, Duke Engineering & Services Mr. Standberg was
primarily responsible for the tunnel mapping and monitoring production by the tunnel
subcontractor.
Mr. George Covel, Liaison between ADF&G and WEC, Sea Run Fisheries Mr. Covel served
as the daily on-site liaison during 2001 responsible as the environmental inspector to observe
construction to determine if it was in compliance with the approved environmental plans.
Mr. David Ryland, Environmental Compliance Monitor, Alaska Department of Fish and
Game Mr. Ryland was the on-site monitor at the site during 2000 and 2001. ADF&G was
responsible for issuing field permits that were required during the project. Mr. Ryland was the
agency field representative.
May2002 Power Creek Hydroelectric Project
5-4
6.0 PROJECT COSTS
The total projected final cost as of December 31, 2001 is $23,800,000. CEC engaged the
services of Whitewater Engineering to provide the licensing and design in the amount of
$1,121,000. The construction portion of the project, also performed by Whitewater, totaled
$18,350,000 which is inclusive of CEC transmission and substation costs and net of insurance
proceeds for the tunnel repair that results from damage incurred during February 200 1. The
original contract amount of $13,335,721 was adjusted by 1) an increase in capacity from 5MW
to 6MW in the amount of $599,000; 2) an upgrade for avalanche resistance in the amount of
$200,000; 3) tunnel lining in the amount of $3,241,000; 4) owner requested upgrades of
$97,000 for the fore by building and overhead crane; and 5) winter construction and license
compliance costs of $668,000. Other costs such as insurance and miscellaneous items make up
the balance.
The major costs that comprise the total cost of $23,800,000 include 1) admin and legal of
$1,373,000; 2) land structures of $202,000; 3) licensing and design costs of $1,121,000; 4)
project inspection costs of $1,260,000; 5) site work of $50,000; 6) construction costs, net of
insurance proceeds, of$18,350,000 and; 7) interest during construction of$1,404,000.
On the following page is a report of the project costs by the FERC uniform system of cost
accounts for hydroelectric projects. The project costs by FERC accounts in the amount of
$23,505,000 excludes non-qualified grant expenses of approximately $295,000.
Funding for the project came from the following sources:
Federal Grant Administered by USDOE
Federal Grant-Administered by USDOE pending
"0%" interest loan from State of Alaska
State of Alaska Power Project Fund Loan
Financing -Co Bank
May2002
6-1
$ 8,827,000
$ 1,838,000
$ 1,000,000
$ 861,887
$12,996,887
Power Creek Hydroelectric Project
FERC Uniform System of Cost Accounts for Hydroelectric Projects
Hydroelectric Development Accounts
Original Final
FERC Account Number Description Cost Costs
Estimate* (Projected)
330 Land 106,074 306,000
• Land and Land Rights Costs
331 Structures and Improvements 860,290 868,000
• Powerhouse Costs
332 Reservoirs, Dams & Waterways 7,367,037 11,472,000
• Clearing Costs
• Dam I Diversion Costs
• Screen I Rack I Gate I Valve Costs
• Intake Structure Costs
• Penstock I Tunnel Costs
• Tailrace Costs
333 Hydraulic Generating Equipment 2,917,046 3,717,000
• Turbine I Generator Costs
334 Accessory Electrical Equipment 597,195 588,000
• Cost of Controls I Ancillary Electrical
Equipment
335 Miscellaneous Mechanical Equipment 17,679 49,000
• Ancillary Mechanical Equipment Costs
336 Roads I Bridges 412,512 422,000
• Access Road Costs I Bridge Costs
Transmission Facilities Accounts
362 Distribution Plant 235,721 178,000
• Substation Civil Costs
• Transformer Costs
• Other Substation Equipment Costs
366, 367 Transmission Line Costs 872,167 1,240,000
• Underground conduit and conductors
TOTAL CONSTRUCTION COSTS -------------------------13,385,721 18,840,000
• Management Costs 1,380,144 2,621,000
Administration • Engineering Design Costs
• Construction Management Costs
Licensing • FERC Licensing Costs 640,305 640,000
IDC • Interest During Construction 1,404,000
TOTAL PROJECT COSTS ------------------------15,406,170 23,505,000
* (Original cost estimate per 2-20-97 P. Frisby letter toM. Garr; Final costs are 12-31-01
actuals plus projections required for final completion)
Reasons for variances:
• Account 332 -
• Account 333 -
• Account 366 I 367 -
• Administration -
• IDC-
May2002
Upgrade the tunnel with steel lining.
Upgrade from 5MW to 6 MW.
Substation costs not budgeted.
Extended schedule; increased inspection; insufficient budget.
Unbudgeted; non-qualified for grant funding.
Power Creek Hydroelectric Project
6-2
7.0 POWER GENERATION
The need for power in Cordova is not so much for more power, but for cheaper and cleaner
power. Cordova's electric rates are among the highest for Alaska's remote rural communities,
even after application of subsidies, such as the Power Cost Equalization (PCE) program, which
seeks to levelize costs among areas with especially high electrical rates. Cordova's cost of
living and economic foundation, fish processing, are currently threatened by high power costs.
In addition, most of Cordova's electricity is produced by diesel generators, with attendant air
quality impacts and fuel storage considerations.
All electric power in the Cordova area is currently generated and distributed by CEC, a rural
electric cooperative. The CEC system is completely isolated from any other electrical system,
and currently supplies about 1,600 customers spread over an area of approximately 2.5 square
miles (sq. mi.).
CEC's loads have in recent years remained relatively steady, as shown in Table 1, with average
annual energy sales of approximately 22.2 million kilowatt hours (kWh) and an average annual
generation of approximately 23.9 million kWh. Differences between sales and generation are
primarily due to transmission losses. Peak loads are approximately 4.7 MW, and occur in the
summer due to seasonal operation by the fish processing industry. Winter peaks are
approximately 75 percent of the summer peaks. The fish processing plants typically operate
from May through September.
7.1 Table 1. Cordova Electric Cooperative Historical Loads.
Year Gross k Vlh Production kWh Sales
1997 23,867,684 22,234,722
1998 23,943,132 22,058,122
1999 24,192,610 22,511,772
2000 23,952,366 22,358,052
2001 23,680,385 21,846,991
In 1991, a number of fish processors ceased operation in Cordova, which caused a substantial
decrease in the electric loads. The high cost of electricity in Cordova at the time was a major
reason the canneries ceased operation. Unless a new industry develops in Cordova, CEC
forecasts only a modest 1 percent annual growth rate in its electric loads. If electric rates could
be reduced, Cordova might be viewed more favorably as a location for new industrial
development, which could stimulate the economy and cause more rapid load growth.
7.2 Existing Power Supply
CEC currently generates electricity with two diesel plants and one hydroelectric plant.
Generation from the diesel plants has averaged about 19,000,000 kWh per year for the last
several years, representing approximately 86 percent ofCEC's generation.
May2002 Power Creek Hydroelectric Project
7-1
The Eyak diesel power plant was originally constructed in the 1960's, and has been expanded
and modified over the years. It contained 4 units with a total installed capacity of 5,900
kilowatts (k W). Because of its age, the Eyak plant was exempt from air emission standards
until 1997. CEC decommissioned the Eyak power plant in 2001, and replaced it with the
Power Creek project.
The Orca diesel power plant was constructed in 1985 and contains 2 units with a total installed
capacity of 4,901 kW. In order to meet air emissions standards exemption criteria, the Orca
plant is limited to generating 15 million kWh/year, which requires CEC to operate other power
plants to supply energy. With a fuel usage rate of 13.6 kWh/gal, the average cost of power
from the diesel power plants is 13.9 ¢/kWh at current market rates for diesel fuel.
The Humpback Creek Hydroelectric Project (PERC No. 8889) is a run-of-river facility located
in the drainage basin just north ofthe Power Creek basin. The Humpback Creek Project began
operation in 1991, and has an installed capacity of 1.25 MW. Annual generation since
operation began has averaged 3,300,000 kWh, approximately 14 percent ofCEC's generation.
About 66 percent of the Humpback Creek generation occurs in the May-September high load
period. The average cost of power from the Humpback Creek Project has been approximately
10.2 ¢/kWh.
The weighted average cost of power for 2001 from the three existing power plants, the bus cost,
is 13.9 ¢/kWh. CEC 2001 average annual energy rate is approximately 22.28 ¢/kWh. These
rates are among the highest in Alaska. Average annual energy rates in nearby towns are 17.58
¢/kWh in Valdez, 12.19 ¢/kWh in Seward, and 12.0 ¢/kWh in Homer.
7.3 Utilization of Power Creek Generation
All generation by the project will be used to offset diesel generation. Although the project as
constructed has the potential to generate as much as 30,000,000 kWh annually, because of the
variability of the loads and streamflows an estimated 17,500,000 kWh of the potential Power
Creek generation will be usable to meet loads at the current load levels.
May2002 Power Creek Hydroelectric Project
7-2
Turbine generators-October 2001
Power Creek Project-FERC No. 11243 -November 2001
Powerhouse Building and penstock pipe-April 2000
Interior of powerhouse before floor slab pour-April 2000
Turbine parts at jobsite-May 2000
Powerhouse red iron with overhead crane -February 2000
= .s
I'll
.~ a
I'll = f
E-c
Q
Q
Q
M
,Q ,;
I
..=
CJ = ~ -.e
~ = ..... -= ~ .....
I'll
.~ a
I'll = f
E-c
~
~
~
~
...... -= ~
~
~ ,...,
I = ~
~
...... -= ,...,
I .... .g,
= e>
~
Q. ·-Q. ... -s
"CC
~
..::.::
(,I
(,I
e
e> ....
~ = ~
~ ....
OIJ = "a:l
~
~
Q. ·-~
Penstock Pipe crossing Power Creek at lower portal-November 2001
Entrance to Lower Portal-July 1999
Placing penstock pipe in the tunnel-September 2000
~
Filling pipe saddles in tunnel -October 2000
Temporary diversion channel and rock cleaning-September 2000
Power Creek following diversion -September 2000
Q
Q
Q
M
......
""'
Q
~
Q
M .c
Q ~ ....
CJ =
0
,...,
I
I
~ e ... to#
B "0
CJ ~ -E .c .... to# .... rn to#
~ ~ = to# = .... -= -
Intake access road with re-vegetation August 2000
APPENDIX B -Selected Project Drawings
POWER CREEK
HYDROELECTRIC PROJECT
CORDOVA, ALASKA
FERC NO. 11243
ACCESS ROADS -DIVERSION DAM I INTAKE STRUCTURE -POWER CONDUIT -POWERHOUSE -TRANSMISSION LINE
/
/
/
/
/
/
/
' ' ' ' ' ' '
STATE OF ALASKA MAP
/
'
/
/
/
/
/
/
' ' ' ' '
....
I
ORCA INLET
...
PROJECT LOCATION
£
II
~
I
3
ii • ••
• E
SHEET DRAWING NUMBER DRAWING TITLE
GENERAL DRAWINGS
G-O 1 TITLE SHEET ~ VICINITY MAP
G-02 DRAWING INDEX
G-03 LEGEND, SYMBOLS, AND NOTES
G-04 STRUCTURAL NOTES
G-05 GENERAL PROJECT PLAN
G-06 TOPOGRAPHY AND SURVEY POINT CONTROL
G-07 CONTRACTORS WORK AREA
G-08 EROSION CONTROL DETAILS
ACCESS ROADS
R-01 ACCESS ROADS GENERAL SECTIONS AND OETIALS
R-02 POWERHOUSE ACCESS ROAD STA 0+00 TO 11+07
R-04 LOWER TUNNEL PORTAL ACCESS ROAD STA 0+00 TO 13+00
R-05 LOWER TUNNEL PORTAL ACCESS ROAD STA 13+00 TO 26+00
R-06 INTAKE ACCESS ROAD STATION 3+84 TO 27+00
R-071NTAKE ACCESS ROAD STATION 27+00 TO 51+00
R-08 INTAKE ACCESS ROAD STATION 51+00 TO 76+00
R-09 INTAKE ACCESS ROAD STATION 76+00 TO 100+00
R-10 INTAKE ACCESS ROAD STATION 100+00 TO 119+13
R-13 ACCESS ROAD AND RELATED FEATURES BRIDGE PLAN AND PROFILE
R-14 ACCESS ROAD AND RELATED FEATURES BRIDGE fOUNDATION PLAN
R-1S ACCESS ROAD AND RELATED FEATURES BRIDGE WEST ABUTMENT DETAILS
R-16 ACCESS ROAD AND RELATED FEATURES BRIDGE EAST ABUTMENT DETAILS
R-17 ACCESS ROAD AND RELATED fEATURES BRIDGE CENTER PIER DETAILS
R-18 ACCESS ROAD AND RELATED FEATURES BRIDGE FRAMING PLAN
R-19 ACCESS ROAD .t RELATED FEATURES BRIDGE EAST PIER DTLS
DIYERSJON DAM
0-01
D-02
D-03
D-04
o-os
D-05.1
0-06
0-06.1
0-07
D-08
D-09
D-09.1
0-09.2
D-09 • .3
D-10
0-10.1
D-11
D-1.3
D-14
0-14.1
0-15
D-15.1
0-15.2
0-15 • .3
D-16
D-17
GENERAL PLAN
DIVERSION DURING CONSTRUCTION
EROSION AND SEDIMENT CONTROL
DIVERSION DAM PLAN AND DETAILS
INTAKE STRUCTURE FOUNDATION PLAN
INTAKE STRUCTURE ROOF PLAN
INTAKE STRUCTURE SECTIONS
SEDIMENT Cl£ANOUT WELOMENT
INTAKE STRUCTURE SECTIONS
CONCRETE SECTIONS AND DETAILS
INTAKE CONTROL BUILDING fOUNDATION AND CONCRETE WALLS
INTAKE CONTROL BUILDING J.IETAL ROOF PLAN AND MISC. DETAILS
CONTROL BUILDING AND DIVERSION STRUCTURE CONDUIT PLAN
CONTROL HOUSE INTERIOR WAll ELEVATIONS
MISCELLANEOUS t.IETAL WORK
STAIR AND HANDRAIL DETAILS INTAKE DAJ.I FOOTBRIDGE
CABLE, CONDUIT, AND PIPING
GENERAL ARRANGEMENT ROLLER AND SLUCICE GATE HPU
ROLlER GATE AND SLUICE GATE HYDRAULIC CIRCUIT
HYDRUAUC SYSTEM INLET VALVES-INTAKE
ELECTRICAL CONTROLS INTAKE
ELECTRICAL CONTROLS INTAKE
HYDRAULIC SKID LAYOUT INTAKE CONTROL BUILDING
DAiol EMERGENCY DEFLATE CIRCUIT AND DATA LOGGER CONNECTIONS
DAM CONTROLS LEVEL CONTROL MANIFOLD
ORIFICE PLATE toR BYPASS
POWER CONDUIT
PC-01
PC-02.1
PC-02.2
PC-02.3
PC-02.4
PC-02.5
PC-03
PC-04
PC-05
PC-06
PC-07
PC-08
PC-09
PC-11
PC-12
GENERAL PENSTOCK PROF'Il£
PLAN AND PROFILE OF' POWER CONDUIT STA 0+00 TO 10+50
PLAN AND PROF'ILE OF POWER CONDUIT STA 1 0+50 TO 23+50
PLAN AND PROFILE OF POWER CONDUIT STA 23+50 TO 35+50
PLAN AND PROfiLE OF' POWER CONDUIT STA 35+50 TO 48+50
PLAN AND PROfiLE OF POWER CONDUIT STA 48+50 TO 58+23
PLAN AND PROfiLE OF TUNNEL
PLAN AND PROF'ILE OF LOWER TUNNEL PORTAL
POWER CONDUIT PORTAL PLANS AND SECTIONS
TUNNEL TYPICAL SECTIONS
TUNNEL ROCK TRAP SECTIONS AND DETAILS
POWER CONDUIT PIPEUN£ SECTIONS
POWER CONDUIT EAST ANCHOR SECT'S AND DETAILS
POWER CONDUIT MANIFOLD PLAN, SECTIONS AND DETAILS
t.IITER AND REDUCER DETAILS
SHEET DRAWING NUMBER DRAWING TITLE
POWERHOUSE
PH-01
PH-02
PH-03
PH-04
PH-04,1
PH-05
PH-05.1
PH-05.2
PH-06
PH-07
PH-DB
PH-D9
PH-10
PH-11
PH-12
PH-13
PH-14
PH-15
PH-15.1
PH-16
PH-17
PH-17.1
PH-18
PH-18.1
PH-18.2
PH-19
PH-19,1
PH-19.2
PH-20
PH-20,1
PH-20.2
PH-21
PH-22
PH-2.3
PH-24
PH-25
PH-26
PH-.30
PH-.31
PH-32
PH-33
PH-34
PH-35
PH-.36
PH-.37
PH-.38
PH-39
PH-40
PH-41
PH-42
PH-43
POWERHOUSE SITE PLAN
EROSION CONTROL PLAN
NORTH AND SOUTH ELEVATIONS
EAST AND WEST ELEVATIONS
POWERHOUSE EAST, WEST, NORTH ELEVATION{FERC)
POWERHOUSE flOOR PLAN
EQUIPMENT LAYOUT PLAN
CONTROL ROOM WALL AND CEILING PLAN AND DETAILS
TYPICAL SECTIONS
FOUNDATION PLAN AT £LEV. 116'-0"
fOUNDATION PLAN AT £LEV. 1 14'-0"
fOOTING PLAN
FOUNDATION SECTIONS
fOUNDATION SECTIONS
CONCRETE DETAILS
CONCRETE DETAILS
CONCRETE DETAILS
MISC. DETAILS
GENERATOR ANCHOR BOLTS
DUAL TWO SPEAR TURBINE HYDRAUliC CIRCUIT
HYDRAULIC SCHEMATIC FOR TURBINE HPU
HPU GENERAL ARRANGEMENT fOR DUAL SPEAR TURBINE
ONE-LINE DIAGRAM GENERAL ELECTRICAL SYSTEM
SURGEPACK / GROUND RESISTOR ASSEMBLY
ONE-LINE DIAGRAM DIESEL GENERATOR INSTRUMENTATION
INTERIOR GROUNDING PLAN
CONDUIT PLAN BELOW F'IN. FLOOR
CONDUIT PLAN ABOVE F'IN. FLOOR
GROUND WIRE AND CONDUIT D£1' AILS
TRANSFORMER CONDUIT PLAtl
CABLE PIT
PANEL BOARD SCHEDULES
LIGHTING AND POWER PLAN
METERING AND TELECOMMUNlCATIONS
CONTROL SYSTEM 1/0 SCREENS
EXTERIOR GROUNDING PLAN
TRANSFORMER SECTION AND DETAILS
FIRE PROTECTION PLAN
FLOOR DRAIN AND UNDERGROUND PIPING PLAN
3'-0 .. DIA INTAKE BOTTOM JET WELDAMENT
.3'-0" DIA INTAKE UPPER JET
VALVE W/ COUPLING ASSEMBLY
43" HCTf TWIN JET REAR CASE FABRICATION
TURBINE INLET BASE PLATES MACHINE DRAWING
INLET BEND SUPPORT FABRICATION DRAWING
SPEAR VALVE ASSEMBLY
SPEAR VALVE DETAILS
SPEAR VALVE WELOAMENT
TURBIN£ ELEVATION PLAN
TURBINE CRITICAL DIMENSIONS
t.IISC. STEEL DETAILS
TRANSMISSION
Tl-16
TL-17
Tl-18
TL-19
TL-20
TL-21
Tl-22
TRANSMISSION LINE PLAN £YAK LAKE STA 0+00 TO 37.3+00
TRANSMISSION LINE PLAN -STA 0+00 TO 28+00
TRANSMISSION LINE PLAN -STA 251 +00 TO 279+00
TRANSMISSION LINE PLAN -STA 279+00 TO .308+00
TRANSMISSION LINE PLAN -STA 308+00 TO .34.3+00
TRANSMISSION UN£ PLAN -STA 343+00 TO 373+00
TRANSMISSION LINE SECTION AND DETAILS
PARTIAL DRAWING LIST FROM MAIN
SHEET DRAWING NUMBER DRAWING TITLE
GENERAL DRAWiNGS
G-1 TITLE SHEET a: VICINITY t.IAP
G-2 DRAWING INDEX
G-5 GENERAL PROJECT PLAN
FERC EXHIBIT DRAWINGS
G-2 PLAN Of TRANSMISSION LINE
F -1 DIVERSION DAt.4 AND INTAKE STRUCTURE
F'-2 POWER CONDUIT
F'-3 CONTROL BUILDING AND DIVERSION INTALKE
f -4 POWER HOUSE PLAN AND SECTIONS
F'-5 !diSC. PLANS, SECTION, AND DETAILS
F-6 ONE-LINE DIAGRAM
SHEET DRAWING NUMBER DRAWING TITLE
POWER TUNNEL PLAN AND PROFILE
TN-19
TN-20
TN-21
TN-22
TN-2.3
TN-24
TN-25
TN-26
TN-27
TN-28
TN-29
TN-.30
TN-31
TUNNEL PLAN AN 0 PROFILE STATION 0+00 TO 30+17
TUNNEL PLAN AND FROF'ILE STA 0+00 TO 2+70
TUNNEL PLAN AND FROFILE STA 2+70 TO 5+20
TUNNEL PLAN AND PROFILE STA 5+20 TO 7+70
TUNNEL PLAN AND PROF'ILE STA 7+70 TO 10+20
TUNNEL PLAN AND PROFILE STA 1 0+20 TO 12+60
TUNNEL PLAN AND FROFIL£ STA 12+60 TO 15+20
TUNNEL PLAN AND PROFILE STA 15+20 TO 17+60
TUNNEL PLAN AND fROF'lLE STA 17+60 TO 20+20
TUNNEL PLAN AND PROfiLE STA 20+20 TO 22+60
TUNNEL PLAN AND PROfiLE STA 22+60 TO 25+20
TUNNEL PLAN AND PROFILE STA 25+20 TO 27+60
TUNNEL PLAN AND PROFILE STA 27+60 TO 30+17
POWER TUNNEL CROSS SECTION~
TN-40
TN-41
TN-42
TN-4.3
TN-44
TN-45
TN-46
TN-47
TN-48
TN-49
TN-50
TN-51
TN-52
TN-5.3
TN-54
TN-55
TN-56
TN-57
TN-58
TN-59
TN-60
TN-61
TN-62
TN-63
TN-64
TN-65
TN-66
TN-67
TN-68
TN-69
TN-70
TN-71
TN-72
TN-73
TN-74
TN-75
TN-76
TN-80
TN-81
TN-82
TUNNEL CROSS SECTIONS STATION 0+10 TO 0+90
TUNNEL CROSS SECTrONS STATION 1+00 TO 1+80
TUNNEL CROSS SECTIONS STATION 1+90 TO 2+70
TUNNEL CROSS SECTiONS STATION 2+80 TO .3+60
TUNNEL CROSS SECTIONS STATION 3+70 TO 4+50
TUNNEL CROSS SECTIONS STATION 4+60 TO 5+40
TUNNEL CROSS SECTIONS STATION 5+50 TO 6+30
TUNNEL CROSS SECTIONS STATION 6+40 TO 7 + 20
TUNNEL CROSS SECTIONS STATION 7+30 TO 8+10
TUNNEL CROSS SECTIONS STATION 8+20 TO 9+00
TUNNEL CROSS SECTIONS STATION 9+10 TO 9+90
TUNNEL CROSS SECTIONS STATION 10+00 TO 10+80
TUNNEL CROSS SECTIONS STATION 1 0+90 TO 11 + 70
TUNNEL CROSS SECTIONS STATION 11+80 TO 1 2+60
TUNNEL CROSS SECTIONS STATION 12+70 TO 1.3+50
TUNNEL CROSS SECTIONS STATION 1.3+60 TO 14+40
TUNNEL CROSS SECTIONS STATION 14+50 TO 15+30
TUNNEL CROSS SECTIONS STATION 15+40 TO 16+20
TUNNEL CROSS SECTIONS STATION 16+.30 TO 17+10
TUNNEL CROSS SECTIONS STATION 17+20 TO 1 8+00
TUNNEL CROSS SECTIONS STATION 18+10 TO 18+90
TUNNEL CROSS SECTIONS STATION 19+00 TO 19+80
TUNNEL CROSS SECTIONS STATION 19+90 TO 20+70
TUNNEL CROSS SECTIONS STATION 20+80 TO 21 +60
TUNNEL CROSS SECTIONS STATION 21 +70 TO 22+50
TUNNEL CROSS SECTIONS STATION 22+60 TO 23+40
TUNNEL CROSS SECTIONS STATION 23+50 TO 24+30
TUNNEL CROSS SECTIONS STATION 24+40 TO 25+20
TUNNEL CROSS SECTIONS STATION 25+.30 TO 26+10
TUNNEL CROSS SECTIONS STATION 26+20 TO 27+00
TUNNEL CROSS SECTIONS STATION 26+10 TO 27+90
TUNNEL CROSS SECTIONS STATION 28+00 TO 28+80
TUNNEL CROSS SECTIONS STATION 28+90 TO 29+06.93
TUNNEL PIPE PLAN SCHEMATIC SLOPE STA 11+28 TO 11+70
TUNNEL PIPE PLAN SCHEMATIC SLOPE STA 21+70 TO 22+29
TUNNEL PIPE PLAN SCHEMATIC SLOPE STA 24+29 TO 25+05
TUNNEL PIPE PLAN SCHEMATIC SLOPE STA 27+65 TO 28+31
TUNNEL THRUST BLOCKS AND SADDLES PLAN AND SECTIONS
LOWER TUNNEL PORTAL PLAN AND ELEVATION
UPPER TUNNEL PORTAL PLAN AND ELEVATION
PROJECT DRAWINGS
POWERHOUSE
PH-4,1 EAST, WEST, AND NORTH ELEVATIONS
POWER TUNNEL CROSS SECTIONS
TN-80
TN-81
TN-82
TUNNEL THRUST BLOCKS AND SADDLES PLAN AND SECTIONS
LOWER TUNNEL PORTAL PLAN AND ELEVATION
UPPER TUNNEL PORTAL PLAN AND ELEVATION
TRANSMISSION
TL-17 TRANSMISSION LINE PLAN -STA 0+00 TO 28+00
-ci z
DRAWN: B..Q!L
CHECKED: ..!f._
DATE: 1 /08/02
<(
"' VI
:5
<(
DRAWING SHEET
G-2
~
.0
~ ....
I
8 .... ~·-----------------~-----------------------/
~
~ z
~
'"' ~
~ a: u
I a:
~ a:
~
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ii
0
0
~R![l) TIWISIIIS5IOH UHE-Sl.IS5TAT1011
UN£ TA81.£
HUU8ER DIR(CTIOic IOISTNIC£
1.1 SOUTM 1240'
1.2 N 110'211 411' E $11
BURtm TRANS. UN£-SUIISTAOON l
C\JRY£ TASL£
I
NVUIJ(IID£LTA TR TL ..... ,
Cl 40'5!1'511 .. 1Mlll750 I
??
SU~ERG£0 TAAHSIIISSION UNE
UHE TABLE
NUII8tR DIRECTIOH OISTAHCC
1.3 N 115'JT28' t 107'
1.4 N 7!1'20'02' E 1.}45
1.5 N 70':1711 £ 1~1
Lll N H"J048 £ J72J
1.7 N :ITJ71J £ 974
1.8 N 42"~·oa [ 1!141
Ul " JCT27 ot E 992
1.10 N 04'1' JV £ 111$S
1.11 N IITIII"IIO. 1411
1.12 N-1!2'01'DJ'" [ II~
LIJ N Or1442 w 1Ja7
1.14 N 0:1'2122 t I :Ill
1.1:1 N 211'"50 11 t 7118
1.111 N U1:1·J2 tOll
1.17 N I4'Ja :1J w 472
1.18 N 5T21"4:1" E 2:11
Lit N tt'ot II £ 252
L20 N 7CT50 tY t J77
1.21 H IU"27 ot -£ 521
SUBU£RC(l) TRAHS\IISSIOH UN£
CUlM TA81.£
NUIIBER D£LTA TR Tl.
C2 1113'01'21 t500JIII50
CJ 115'14"57 2000122711
' . ·--
?3
0
0
...
1 ./
3-#1/0 URD JACKETED
SUBMARINE CABLE
LAYING ON LAKE
BOTTOM
?Li
-I
EYAK LAKE
1 0 -.c,
POWER CREEK HYDROELECTRIC PROJECT
FERC NO. 11243
EXHIBIT G-2
PLAN OF TRANSMISSION LINE
HOR. SCAlE: 1"•2000'
VERT. SCALE: I liDO
"' 0 ·;;
0
0
-------~-----
FOREBAY ,
HORIAAL W.S. ELEV=420
----
-~---
~
INTAK TRUCTURE
HYDRAULIC INTAKE GATE
OPLAN
T.O. WALL EL 425'-0"
NORMAL W.S. EL. 420'
SCALE 1" "' 20' -a•
DIVERSION STRUCTURE
B
WALKING BRIDGE
-o
~
' ' \
84M SLUICE ~
52'
g,
~ f-
\
NORMAL W.S.
EL. 420'
TRASHRACK
\
Ql T.Q. WALL .::' '.
44'
TOP OF PARAPET EL. 425' I
TOP OF DECK EL 422'
NORMAL MAX.
W.S. EL 420'
RIP RAP
40 MIL LINER
EXTEND 50'
UPSTREAM
22'
INFLATABLE DAM
FLOW ...
= 2' N.F.S. GRAVEL
'HIGH PERMEABILITY' BELOW
SLAB COMPACT TO 95"
M.D.D. PER AASHTO 0-1557
Y PVC RELIEF
DRAINS
RIP RAP
SCALE 1" • 10'-o"
m~CTION
SCALE 1" ,. !1'-0"
65'
EL. 425'-0"
EL 412'-o"
IMPERMEABLE MEMBRANE-
ED~CTION
ACCESS HATCH
HYDRAULIC SLUICE GATE
SLOPE l ~ TO RIVER
EL.
408-6
84" SLUICE
PIPE DRAIN
SCAlE ,. • 10' -o·
POWER CREEK HYDROELECTRIC PROJECT
FERC NO. 11243
EXHIBIT F -1
DIVERSION DAM AND INTAKE STRUCTURE
HOR, SCALE: AS NOTED
VERT. SCALE: AS NOTED 20 10 0 20
' j
,.:
.... ...
'
..-.,.
-~ ll ..,
)
> ... _,
'-,./
.,.,-....... --...,/'-"" ------------~·-/ ___ , ·-~,-...-~/-'-"------'-.-..; ~ / ---'/ ----f t ' '' rCWJI uNo .... .,..,._ II ..../ ... /"-" ' -.. i----,---~-;,;----_:_ __________ ;_
~~ ' ~:r / I'-.... ~
Iii;:) /.....-I\
~~-------------------~--~/ I \
100
0
-100
0+00
CL STEEL
PENSTOCK'
2+00 4+00 4+01
/ I '
/ ' ; ....... -.....___
1+01 11+01 10+01 12+01 14+01 16+01 18+01 20+01 22+01 24+01 26+01 211+01
I
30+01 32+01 34+01
STL PENSTOCK
114" 0 .0. X 3/8" WAU.
A-139 CAADE ·c·
35+01 38+01
84" TO 96"
TRANSITION
X 1/2" WAI.
A-572 GR. 2
96" TO 114"
40+01
------
-----------------------·-----
_......_
!ii..OPE ~ -l.l2"
STL PENSTOCK
42+01 44+01 46+01
STL PENSTOCK 71" 0 .0. TO 84" 0.0. TRANSITION TRANSmON STL PENSTOCI( 114' 0.0. X !il/16'
WAl-L A-Ill GRADE ~· 114" 0.0. X l/8" WAlL STL PENSTOCK 76" 0.0. X 1/2 WAU. A-139 CRACE "C" X l/2" WAU. A-$72 CIWlE 42 =-~16" W
PENSTOCK ~---A-_1_39 __ C_RAD __ £_~_· ___ ~L---------------------------------~U=OO~In~EO~W~4~==~~~1~U=IN=·~~=E=~~~~EN=~~---------------------------------------~U~~---~-4--------------------S~TL~P-ENST __ OC~K~8~4-"~0~.0-·~X-l~/II~"-W_AI-l~-"--~1l~9-~ __ r_·_c_· ________________ ~~~
IIAT£RIAL r r-
114" 0.0. X 9/1 I" WAlL
A-Ill CIWlE "C"
STL IWIIF~
TYP. SADDLE UNLINED TUNNEL SECTION
SCALE 1"•J'
1'-1' THICK X 12'-0'
~NC COHC. THRUST 8LK
REINF. W/ f5 BAR D 12'
D.C. OTOP llr BOT. (J' CLR)
EA. WAY.
f 1 1 GR 60 R£-BAR EPOX'f
CROUT A: INTO ROCK
EXTEND TO WITHIN l' OF
PIPE (8) EAOI SIDE D
1'-1' D.C.
TYP. THRUST BLOCK UNLINED TUNNEL SECTION
SCALE 1·.y
47 sn. ljlT£R
!ill' 00 " 9/16"
A-IJ9 CR. ·c•
TYP. BURIED PIPELINE
SCALE 1••5'
.
N
POWER CREEK HYDROELECTRIC PROJECT
FERC NO. 11243
HOR. SCAlE: 1",.200'
VERT. SCALE: 1"•100'
EXHIBIT F-2
POWER CONDUIT
200 100 0 200
HORIZONTAL
•oo
J L-----------------------------------------------------------------------------------------------------------------------------------------~--------------------------------------~
~
' 0
/
u
·~ 8
I r------
1
l.. -
10' STL. POLE FOR
T.V. CAMARA
PRESS. TRANS.
SIX UNISTRUT C~NELS
p:g; ~ 6 ~~4~0o~~E • 1\
0 END rLANGE INLET IN I
41:5.00 OUTLET IE 412.00 / \
TRANSDUCER \
'TOP OF CONC.
EL. 422'-o"
'
I
I
I
\
' ' ' '
NEt.IA 4 BOX ACCESS
s·-o• ABOVE GROUND
fLOW ~ETE:R II-HAKE
' ' ' ' '
PRESSURE
TRANS
' ' ' ' ' '
WALK BRIDGE
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
JUNC. BOX~
V BRIDGESTONE DAM
CONTROLLER
20'-0~
.-ACCUMULATOR / DEFLATION VALVE
BLO~ 2" .
AIR MANIFOLD
STEP LADDER
I ELEC. SAfET'f
RP.U
SWITC'i POWER
CCt.IM. CABLE FROM
POWERHOUSE
ri CRY TRANS.
HEATER
0
' ~
~ -~ t------------------------------------------------------------------------------------------------------------------------------------"-----------------------------------------------------------------------------------------------------------------1
;;;
li
'ci"
§
0
' "'
0
' \!
ffi SOUTH ELEVATION
2'-s-x 2'-s· ~TL.
ACCESS DOOR W/ LOCK
I.ITL STUD FRAMING AND I.ITL.
SIDING GABLE ENOS ONLY
6" PRECAST
CONC. PANELS
CRACE
0
' "'
0
METAL ROOF
R-19 INSULATION IN ROOf
AND GABLE ENDS.
2'-7* x s·-a-
MTL. DOOR W/
LOCK.
6" PRECAST
CONC. PANELS
POWER CREEK HYDROELECTRIC PROJECT
FERC NO. 11243
EXHIBIT F-3
CONTROL BUILDING AND DIVERSION INTAKE
HOR. SCALE: AS NOTED
VERT. SCALE: AS NOTED
~--------------------------------------------------------------------------------------~------------------------~
~
I m
0 .,.
t:l
;I:
Cl
CD .,.,
PRE-ENGINEERED
INSULATED STEEL BUILDING
FLOOR. EL 11 '
.
CD
I
"'
~
I ;....
N
BOTTOM OF TAILRACE
EL 106.5'
------------r~·-----
ELEV. 119'
/
/
/
I TOP OF BANK
)
6 -----~ 0 ~ ~ ~ ~S~~TION ---"'-._ 8 ~ _ POWt:RHOUSI: ~ -----_ .~ t--J~S~I;T:;,E~P:::;LA~N~--...:::::::=-----
/0 SCAlE 1"•10' --. ~ POWt:RHOUSI:
""""-SCALE , •• JO., __
!r----------~~~'~,~~~~i[-:-:--Jr~-~-~-~--~-~-~-~--~-~-~--~-=-~-~--=-=-~--~-=-~-{~~~==~==~==~=f:~=;~==~==~~==~~~~-~-~~-~-~=-~-~-~-~-=-~-~"-~~~~==~==-P;o:w.~c.~~;c~~~;C.~k----------'~,:~~,;:~~~----------------------~~~~j =
0
0 1
1 1
1 1\
1
).
1
1 ------------------{,,----)../ -------------------------r ' '--: • t------------------------------------------· •
I II I I
/ I
..... u w
~
0..
Vi' a.
0
~
II
;,;
0
0
Vl
> ....
I ..... g
a.
~
"' >
N
0
0
N ...... ....
......
N
;,;
8
CEN. CONTliOI.
PANEL
D
GEN NO 2
3000 KW,
400 RPM
8 FLOOR PLAN
POWt:RHOUSE SCAIL 1"•5'
I
D .
GEN NO 1
3000 KW ,
400 RPM
TURBINE NO 1
2 JET TURGO
3100 KW 0 280'
L--------,
7-l! ..,.
TRAHSrOII>IER I
1oo·-o ·
LAYDOWN AREA
lr . 8 ;!o
X~
N...J
~...J
0
lr
~
I
0 ..,.
POWER CREEK HYDROELECTRIC PROJECT
FERC NO. 11243
EXHIBIT F-4
POWER HOUSE PLAN AND SECTIONS
HOR . SCALE: AS NOTED
VERT. SCALE : AS NOTED :k-o JO
\
\ TUNNEL
\~PORTAL
~
\'-'\ ...... _ R.OW~ CONC. FTG AND WALL
WEST ABUTMENT
~r---------------~~~-=~==~~~CL~ct~~~==~~~~====~====~====~====~====~~~~-~-~-=~~-~-=-~-~~~-~-=-~-~=-:3
I ');~'...._>y
Ol
0 .,. CONC. FILLED STL. PIPE
EAST ABUTMENT
@SECTION
-LOWER TUNNEL BRIDGE AREA SCAlE 1"=20'
CONC. FILLED STL. PIPE
SUPPORT PIERS
7.5' 7.5'
1% 1%
TYPICAL ACCESS ROAD SECTION
SCALE 1"=5'
~r---------------~--------------~------------------~----------------~-----------------~~-----------------------------------L--------.-------------------------------------1
,.., ..,.
I
0
aJ
/
0 :;.
0
/
0
0 ..,.
/
0
aJ
/
0
"' Q
>-;;;-
1--u w
3 y
)_
CJ
0 u
[/]
>
~
'
"' 0
J
" ....
r
0.1
' 0
0
N
0
Ol
I
I
I
I
I
\
I
I
I
I
I
I
I
0
01
0
0
N
0
N
~~P~L~A~N--------------------~ r.::::...::J LOWER TUNNEL BRJOGE AREA SCALE 1'=20'
POWER CREEK HYDROELECTRIC PROJECT
FERC NO. 11243
EXHIBIT F -5
MISC. PLANS, SECTION,
HOR. SCALE: AS NOTED
VERT. SCALE: AS NOTED 20 10 0
AND DETAILS
20 40
cc
/
0
0::
c
" v:
3CT
STATION SERIIICE
TRANSFORMER #1
4.16 kV -480/27N
3CT 300/5
.--1 "'"'tCT-l3'-!L-EG_S ____ --{·~~~~>--=------~~-,
1 PHASE
PART OF OCR. I
I
Lf600A __ _j
MAIN POWER ~ - -~
TRANSFORMER I ___ ll 1
4.16kV-24.9kV I ---~ 1
7500 kVA L --__:J
3CT
PT
4160-120V
~~~~<E---O:::IJ-1f------l
r-----------------------------------------------------------~----~~~3-5/_1_~ ________ +---------------~~~__j
CIRCUIT BREAKER
5kV r--t--~~~-----t---L-
r---'----~ GENERATOR 1
(TYP GENERATOR 2) I
L_ _____ ~
---------t----+----~
LOCKABLE BREAKER
50 A
STATION SERVIC<:
TRANSFORMER #2
480-208/120V
30 kVA
203/120 VAC PNL
CRITICAL BUS
(INCL. PLC)
480/120
(~~~
DIESEL
)
PT
4160-120V
GENERATOR 2
DIAGRAM SAME AS FOR
GENERATOR 1. # 1/0 USE, XLP GENERATOR
480/27N
~l§:z<<E--a::n-.-----4_J_--I
35/1 ~
S.C • .,-.LA
'--::L5. 1 kV
1000/5
1CT
NEUTRAL GROUNDING
RESISTOR
4160V
GENERATOR 1
I
# 6 cu
INTAKE STEP-DOWN
311 TRANSFORMER __ _
480V TO 2D8/120V Grd ---
WYE 15 KVA 2.5l': BOOST
7.5 HP
AIR PUMP
, ... yo----~
LIGHTING AND
RECPTACLE ------~
CIRCUIT
INSTALL
CONSTA-VOLT
FOR COMPUTER
1 1 H.P. PUMP I
L --DIVER:I..?N I ~!AKE -----_j
8 KILOWATT HOUR METER
8 KILOWATT METER
SSW 1 * SYNC SWITCH UNIT 1
~ CIRCUIT BREAKER
8 TRANSFORMER DIFFERENTIAL RELAY
8 UNDER/OVER VOLTAGE RELAY
@ UNDER/OVER FREQUENCY RELAY
8 REVERSE POWER RELAY
G LOSS OF EXCITATION RELAY
8 PHASE BALANCE RELAY
8 VOLTAGE RESTRAINED OVERCURRENT RELAY
8 GENERATOR DIFFERENTIAL RELAY
e GENERATOR NEUTRAL OVERCURRENT RELAY
0 SYNC CHECK RELAY
8 GOVERNOR / SPEED MATCHING CONTROLER
8 FREQUENCY METER
G AMMETER
B VOLT METER
6 POWER FACTOR METER
B VOLT METER SWITCH
B AMMETER SWITCH
8 RUNNING VOLT METER
8 RUNNING FREQUENCY METER
§ SYNC SCOPE
8 INCOMING VOLT METER
8 INCOMING FREQUENCY METER
S.c.::fsuRGE CAPACITOR
st.-1 0 SYNC LIGHT
DMMX DIGITAL MULTIMETER TRANSDUCER
DPMM DIGITAL PROTECTION
METERING/MONITORING
DIESEL GENERATOR
INSTRUMENTATION
I
I L I ______________ !
POWER CREEK HYDROELECTRIC PROJECT
HOR. SCALE: NONE
VERT. SCALE: NONE
FERC NO. 11 243
EXHIBIT F-6
ONE-LINE DIAGRAM
__________________________ _j SEE DWG/ PH-18. AND 18.2 ALLOW 15 KVA FOR OVERAGE _j L__ BUS VOLTAGE MATCHING SWITCH
BVIAS :::7 r-
" :;:
Cl ,..:
--' I-
I gs ...
/
Vl ~
~ z -r;;
" :;:
Cl
/
~
0:: u
I
0::
~
/
0
0::
Cl >-:!:
? u w a
0:: a.
;;
0 u
Vl
> ...
I g
a.
iO
" 5
N
0
0
N
'-O'l
'-
;;
0
Cl
SOP STA 0+00
--
.... + g
EYAK
SUBSTATION
+
0
SPLICE
BOX I
15 TO EYAK SUB
14 TO 15
CABLE CABLE
LENGTH PER REEL
240' +SUB ST. LNGTH EYAK LAKE
1160' 1700'
----~~---=-
--------------~TY-AIRSTRIP
----------
------------------------
SPLICE TOTAL CABLE
BOX I DIST. PER REEL
1.3 TO 14 25,.361' 6675'
6675'
6675'
6675'
TOTAL 26700'
'I
SCALE: 1"=100'
,: • • • •o 100
(FOR 22x34 SHEET)
SUBMARINE CABLE
SEE DWG. TL-16
I
I
---
o::·· ·0 17£1•~ ..
E-<·a
<("' ~:a .u
17£1 ...
'Q E-<'1: .. ....... ::r: . .s
~:~ ..
!
1-
@ zo ~ <Co ...J+ ~a.. co ~ (\1 "' ug~~
~ ...J ~@z8 ~0+ -o ~ [i]~~z
WwCI)Q a:lLzl-
0 <(<(
ffi a: b) ~ 1-
a..
~
DRAWN: ,!f__
CHECKED:~
DATE: SL15lOO
DRAWING SHEET
TL-17
2;'
I
.~
"' 111
I
J c ..
lr.
,.,
n .. ,
~
1 CT J L£CS
100/5
LOCKASI.E BAENCtR
!IDol
ST"noN SERIIICo
TJWjSFORWEA ll
480-2011/120V
JD WA
20S/120 VAC PNL
~------------------
4&0/120
CIRCUIT BREMER
5kV I
I
L--~~~ PANE: _ _j
r--t------!..,__1~---r----l------1 '"---+----"~
r ___ J_ ___ I
---------, CAITIC"L BUS
(INCl.. PLC)
)
PT
4160-12oY
4~J-~
rt-------l&\SSlER DECS
VOI.TACE ~----------
FIELD
1000/5
ICT
RECUV.TM
NEUTRAl. GROUNDINC
RESISTOR
4160V
GENERATOR 1
-------~ I GENERATOR 1 I
I (TYP CENERATOR 2) I
I GENERATOR 2 I
L_ _____ _]
I 1/0 USE. IILP DIAGRAM SoUlE "5 FOR 1
GENERATOR 1.
__________ I
7~ HP
AIR PUI.IP
r.s!)"------...
UGHnNC ANO
AEC= ---------+-'
INST"Ll
CONST,.-VOI.T
FOR COI.IPUTEA
I 1 H.P . PUioiP 1
I L DIVERSION I INTAKE _j
e Kl\.OWAn HOUR loiETER e ICIU!WATT loiETER
SSWI * SYNC SWITCH UNIT 1
@] CIRCuiT BREMER
e TRAHSrOR»ER OIFfERENTW. R(I.AY
e UNDER/OVER VOI.TACE R£1AY
@ UNDER/CM:R FREQUENCY A(IAY e II£V£RS( POWER REIAT
G LOSS or ElCCfTolTI()Ij RElAY e PHASE llollANCE RElAY
e VOI.TACE RESTRAINED OVERCUAR£NT REIAT e GENER.\TDR OIFf'ERENTW. RElAY
8 CEN£RATDR NE\I'IRAL OVERCURR£NT RElAY
G SYNC CHECK RElAY
e COIII:AHOR / SPEED W.TCHING CONTROLER
e F'REOUENCT litTER e AlolloiETER e VOlT IIETER
® POWER F"ACTOR litTER
B VOLT loi£TER SWITCH
B AlolloltTtA SWITCH
8 RUNNING VOLT loiETER
8 AUNNIIIG FR£DUENCT loltTER
e SYNC SCOPE
8 INCOI.IINC VOlT loiETER
8 INCOI.IIIIC I'REOU£NCT loiETER
S.c.::f SURCE ~ACITOR sz.-•o SYNC UGHT
DI.IIIX OICITAL IIU~nii£TER TJWjSQUCER
DPIIII DIGITAL PROTEcnDN
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POWER CREEK HYDROELECTRIC PROJECT
HOR. SCAlE: NONE
VERT. SCALE: NONE
F"ERC NO. 11243
EXHIBIT F-6
ONE-LINE DIAGRAM
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