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AKUTAN HYDRO-ELECTRIC PROJECT
Service Request #3
Contract No. CC08-5315
FOR ALASKA POWER AUTHORITY
November , 1985
TABLE OF CONTENTS
I. SCOPE OF WORK .•••.•••••••••••• Page 1
II. FIELD TRIP •••••••..•••••••.•• Page 2
A. WATER
B. SOILS
C.PIPELINE ROUTES
D.CABLE ROUTES
E.PIPELINES
F.LOGISTICS
G.CONSTRUCTION COSTS
H.AKUTAN UTILITY SYSTEM
!.BUILDING HEATING
J.TELEPHONE SYSTEM
K.TRIDENT ELECTRICAL SYSTEM
III. PROJECT FEATURES ..•..•••..•...•• Page 6
IV.
v.
VI.
A. DAMS
B. PIPELINES
C.POWERHOUSE
D. CONTROLS
E.TRANSMISSION SYSTEM
F.ALTERNATIVE SITE
FERC LICENSING.
Slope Stability and Selsmls Risk .•
CONCLUSIONS •.
VII. RECOMMENDATIONS .
A.STREAM GAGING
B.SNOW CREEP
C.COST ESTIMATE
D. SURVEY
.Page 14
• •. Page 15
. .. Page 17
.. Page 18
TABLE OF CONTENTS, CONT.
EXHIBITS
1. Project location map
2. North site layout
3. Photographs, 13 pages
4. Approximate reservoir and volume dam axis profile, North
site, west fork
5. P.E. pipe support system, north site, east fork
6. Anchor clamp sketch
7. Mold construction for fiberglas clamps
8. Pipe side hill support and longitudinal anchor sketch
9. Snow creep measurement devices
10. Telephone log FERC jurisdiction
11. Part 24, Pan. 20.2, Copy, Title 18, chapter 1
"Declaration of Intention"
12. Energy production at Akutan
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!-ll ciSkd. ("If [:()fl1LE:··-·1'"'f_~ ·?.nO Ec>:::~r:1 :-1 ;!11 Deve 1 ' D i v.. 0 f Enet'QY 2. n:!
Power Development. GEOTHERMAL ENERGY IN THE ALEUTIANS AN UNTAPPED
FiESOUf\CE ADm~ ISU"fND. 1'381. 4 p.
RaJ Bharg~va lssoc., Ott Water Engineers,
HYDROEU:cn~ C Pm·JER P!iOJECT PROPOSctL.
Pc•we~-c::t••th•:..·ity, lq/1,~i. .i v·:d.
f{i::Yv·J:JRDS: •i:~•:t::.r•, .Y•;:;..::J).
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Inc. 1 et 2.1.
Ak•_~t::<n (Cityl
AVUTAN
AtJD Alask2.
L~?d~hil: TNt~. HYDRnELECTRIC PROJECT DESIGN AND CONSTRUCTION AT
AKIITAN, PLRSKQ DRODOSP~ TO ALASKA POWER AUTHORITY FOR FEASIBILITY
:=:;TLJDIES. l':id!i'•. V·~;.
l<i:cYl·!ORD::: rJt.?r 1 pr·:•fX•S-3!.
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:·i:tr:1rd-wey 1 Thomao:. D .. , Ott l.Jatet' En~:pneer·s, Inc. AKUTAN HYDROELECTRIC:
PROJECT PREUMINAFY DE~;IGN. f.ikut:;~.n (City), 1'380. 1 v•:•l.
KEYWORDS: Rkutan 1 design.
Pkut2.n A'<UT.:r! CURPORATION A RFPORT. 1 '380. 18 p.
t'lot't'l<:.=.on--K,-,.,,::;~en C•:. :.t=[ITHERMAL POTENTIAl .. I THE ALEUTIANS Ar~UTAN.
. of Commerce and Economic Devel
r:~ncJ P.:·we;-Devel.:•;•mer:t, 1'381. J v•:·l.
t{EYl~ORD;:: ~ (..{i,, u i~ ·~"' :n, ~ ~·-~··t het'f,,,.:j: (?(let~g :/ ..
Devel·~. , Dcv. c•f E,"::,,-gy ,: .. -,('i Per~1et :Jeveloprr1ent 1 1'331. .:+ p.
KEYWORDS: J.H•··t . .;:.:-·1 g:oot:ile>'t•lal enet'gy.
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/ j CITY OF AKUTAN COMPREHENSIVE PLnN. Alaska Dept. of Community and
,..-.: .. g .. i·:•ni'll AffaH-s q~.m <Haska Dept. ·:·f Communit:y and Region'l.l
ffai~·s, Div. c•f Cet''r•l•.mity Plannir.g, et al 1 1'382. 40 p.
'1Y\ I :s 5 I"'-'\ \:I'-ll.""-~ \' b,.. O..'t-I
ANC 005 •
,.; ~{ P!tTHClPITY
TnUJG SYSTUl
Comm~~;ty and ional Affair~, 1 \: ~ ,-' ~: . :-~ i i p ~. l
·~ : •; i 1: ,w,,::-c.. (:W.UTA~~ PPOSPECTS F-T•''
vol. Utlicr·-:,f;che).
I~EYWORDC;: P~ut
Utt L.J.:d:er· [nginer>r'c:, Ir.c. r I~JNARY INFORMATION AKUTAN
HYDROELECTF'I C: ;::·~: f~k•Jtc;n (City), i'.::Jf'•;':. vc•l.
f':EY!-JORD!=';: :::,,, t
Q.W. S~c~ ~nd 0ss~c. GPS TURBINE POUER PLANT SPECIFICRTIONS AND
CONTRACT i"Jc:y.;>-]HS C:::JNTRACT 2. Anctwr'a.ge 1!'1uni ci pa.l i tyl MuniCl p"d
L. i t ;:\ Y:·~·
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h' l·i 1-:coc·:·. 2nd A<;:soc. I>FCHRNICf:.l ERECTION RND POWER PIPING UNIT NO 6
EXP::\~i'}!n:.: •:C:c.JTR:~Cl DUCUMENTS. Pnchor'a.g (fr;f_:_nic~ir·-:31 it
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'":·t'2!JP i i lp.:lity). r:it:.S TURBIHE
sr·~;~ r::·rc~lTfL:~\!3 PREJ ~MTNHf~'~r'. 1 S:7P,. ;
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A. r · ~~r :1~;-,_!: :-·:1 t SPEC!FICAT:CHJ~·: FDf~ (3~~~, TUf~Blt·.JFS t"~ND EXHqus;·
HE~T BOll.ER MUNICiPAL LIGHT AND POWE~ UNIT NO. 7 1378. ' vo!.
KEYWORDS: Anchorage, ~aste heat.
Harstad Assoc. MUNICIPALITY OF ANCHORAGE 150 MW COMBINED CYLCLE
EL ECTPIC CJENERATINf'J S 'PTION. 1 '37.'3. 8 p.
f<:F'.'WORDS: ~lm:-hol'i'IIJE?.
AKUTAN HYDRO-ELECTRIC PROJECT
I. SCOPE OF WORK
Dated: October 25, 1985
Service Request No. 3
A.P.A. Contract No. CCOB-5315
Calls for the following services to be performed:
A. Travel to Akutan and gather sufficient field data
potential detailed design revision of the existing
hydro-electric power project.
lKUTAN
for a
Akutan
B. Review In detail the existing design drawings and al 1
existing Information previously utll lzed for the existing design.
C. Develop one or more concepts for a hydro-electric power
project In Akutan, based on existing information and the field
data gathered.
1
tl.. T /-t;
II. FIELD TRIP
The following outline work was accomplished during a field trip.
The entIre proJect was wa 1 ked-over wIth the except I on of the
distribution line route, which was viewed from the bay. The dam
axis was surveyed. The project streams (North) flow was measured
at It's mouth and a stream gage Installed. It was also measured
at the west branch, maIn dam, and east branch, dIvers I on dam,
sites. Surface topography and soils were examined. Talked with
Jacob Stepletln, the mayor; Tom McGlashln, the regional
corporatIon pres I dent; C 1 yde Lev Itt, superIntendent of TrIdent
Fisheries, and Larry Simms, superintendent for Gaston &
Associates, Inc. who are currently finishing construction of the
new school. Examined the power plant, the water facility, the
school bolTer system, the regional corporation building heating
system. Also, gaged the stream on the south side of the bay.
Findings from field trip are as follows:
A. Water
At a point about 60' above the mouth of subJect stream, Just
below the fl rst water fall, the stream flow was measured at
4.902CFS. A staff gage was Installed--the gage read 0.73' at that
time. The distance to the top of the staff Is 2.94 feet above
the 3.0 mark on the gage. At the main dam site, the flow was
measured at 2.439CFS. On the east fork diversion, the flow was
measured at 1.464CFS. At all measured sites, flats were
Installed with red tops and were marked center line of gage.
Available water for power from the two diversion sites on
November 1, 1985, was 3.9CFS. Almost exactly 1CFS Is lost
between the dam and diversion site and the mouth of the creek.
The quality of the measurements was relatively good considering
the problem In finding a uniform section and the small size of
the creek. The flow In the creek on the south side of the bay
was also measured. Just above the mouth the reading was
6.742CFS. This Is 1.84CFS more water than was found at the mouth
of the North creek. There Is, therefore, about 37 1/2% more
water In the creek on the south side at this time. Aerial
photos--1 Inch = 2,000'--have been ordered. When the photos are
received, drainage divides will be marked on them and the
relative size of the drainage areas will be calculated. This
Information should be available In about 10 days. In addition, a
field book was left with Tom McGlashln. He was asked to read the
staff gage at least once per week.
B. So I 1 s
Observations were mostly In line with the report provided by
Ott Water et al design report for Akutan hydro-power dated 1980.
Soils were primarily weathered volcanic materials and surface
vegetatIon was comprIsed of grasses, sedges and moss. On the
pipeline routes, It was observed that there were few stabl llty
problems. There was however, evidence of sl ldlng above the very
2
steep sections directly above the powerhouse. This surface
so 11 movement appears to be o 1 d. Genera 1 observatIon of the
entire Island, Indicated that unless the slopes were very steep,
surface soils appear relatively stable. There were no new, or
recent, Indications of slIdes near the main dam site. The
diversion site will not have any particular soil problems, though
there was seepage coming out of the banks In the general vicinity
of the structure. With both dams there may be a problem
providing good cut-offs. The main dam site, where storage Is
needed, has the potential for the most cut-off problems as the
structure Is higher and there was seepage down below the dam
site. Materials around the dam sites appear to be comprised of a
number of fairly large boulders and other rock with silts and
sands Interspersed, all covered over with vegetation.
C. Pipet lne routes
The subject pIpe 1 I ne route does not appear to have any rea 1
stabll tty problems, however, It does cross some fairly deep
gullies at the lower, higher pressure, end and Is also located on
somewhat of a side hill. An optional pipeline route which runs
along the higher side hill further to the south and then proceeds
straight down the hill appears to be In more stable soils. Both
pipelines cross Into an area that may have had some small soil
movements In the past; there Is some evidence of convoluted
ground slightly above the very steep section of the hill to the
powerhouse.
D. Cable routes
Cable route for the on-land cable was looked at from the water.
It Is anticipated that the terrain and soils are representative
of those seen on the pipet lne route. The submarine cable was
discussed with local people who stated that the bottom of the bay
Is sand and gravel (mostly sand) a short distance off shore.
Many of the beaches when exposed are sand--though there are,
along the steep cliffs on the shore line, some fairly large
rocks, which have fallen and 1 leon the near shore.
E. Pipelines
There are no particular changes In routing recommended on the
selected diversion conduit route. The diversion ·conduit Is
estimated to be around 700' In length. This conduit traverses a
rocky stretch of ground where sleepers could be used. Ott Water
states the main 12 Inch pipeline length Is about 2,350'. Of this
2,300', approximat.ely 1,100' would be 12" polyethylene pipe and
the balance, steel. An alternative route was looked at. The
alternative route Is above the gullies. This route runs along
the contour and wi 11 require about 1 1 230' of 1 ow pressure pipe
and roughly 1,370' of high pressure pipe. High pressure pipe
would be filament wound with a PVC liner, similar to Permastrand.
The low pressure pipe could be PVC, Permastrand type pipe, or It
3
might be, as proposed, polyethylene.
possible.
F. Logistics
All those options are
Talked to Trident Seafoods (Clyde Levitt) about the use of their
equipment. He said the helicopter was avai table for one week
during the month of August. It was a chartered helicopter and
was used at that time to load supplies and equipment on their
floating processors. I noticed that they had a John Deere,
around 450 size, and a DS and cement mixer. They stated that If
we wanted to find out about use of any of their equipment, they
would want us to talk to Charles Bonderant, the president, in
Seattle. Mr. Levitt did not appear very enthusiastic about us
using any of his equipment. He said they were going to extend
their dock 400' this next year.
G. Construction Costs
Talked extensively with Larry Simms. Larry , with Gaston &
Associates, Inc., Is superintendent for construction of two
schools, one at Akutan and one at False Pass. Asked him what the
approximate ratio of labor to material costs were--he said It was
about 60/40. He stated that they brought their material In on a
barge with a front ramp. The second load of material which was
for a sea plane ramp, and a fuel storage facility, for which they
also have the contract, was brought in by Northland Services A
big barge came In, equipped with a very large crane which
unloaded the materials off the barge and set them directly on the
beach.
I asked Mr. Simms what he had to pay his workers. He said he
paid them Davis Bacon wages and had to work roughly 6 -ll's to
keep them on the site. I asked him If they used concrete. They
had not used concrete on the school, but for the sea plane ramp,
they brought In precast concrete. He said there was no aggregate
available In the area that was of any quality. This was also
confirmed by Mr. Levitt of Trident, who stated that they brought
In all their aggregate and the only way to get any aggregate In
the area was with a crusher.
Labor efficiency was discussed. Mr. Simms stated that they had
several local people who were fairly good laborers and that they
would generally show up at 1 the time; the rest of the people
showed up when they wanted to and they could not count on local
labor to do work. I tried to get an approximate percentage
output from him and I tried a few numbers on him, and It looked
like around 25 or 30% was the number that he was satisfied with.
He stated that they have the same problems in False Pass as well.
This labor efficiency ratio was confirmed also by Mr. Levitt of
Trident. He stated that generally people would work for & short
tIme and then 1 eave. He said that TrIdent had a 11 theIr own
crew; they're almost entirely self-contained.
4
AKUT Mj
Weather factors were discussed with Mr. Simms. He stated that
weather was good around June, July, and August, but beyond then
It got quite bad. Weather wasn't a significant problem except for
when the wind was blowing and certain types of building work were
under way.
H. Akutan Utility System
Akutan has two primary generators, both from Northern Commercial
Co. which are Caterpillar, No.s 3304. They are capable of 90kw
and 112kva. These are 1800 rpm machines. They produce power at
4 8 0 v o 1 t s • Pane 1 boa r d s a r e e q u I p p e d w I t h v o 1 tag e r a I s e /1 owe r
facilities, synchroscope, synchronizing lights, and It appears
that the generators are set up for parallel operation. At the
tIme I was there, 6:33 p.m., on the 1st, they were generatIng
38kw at .99 power factor. Later In the evening, the output
Increased to 42kw at 0.985 power factor. The reported peak of
the village Is 80kw during Christmas when the Christmas lights
were on. The reported minimum Is 18kw. A chart Is attached
below which shows the recorded monthly kw hours generated.
I. Building Heating
Buildings are all heated by oil. In the past they were heated
with coal and driftwood. The new school Is equipped with two
Weil-McLalne boilers, that have gun-type burners, with orifices
set at 1.5 gallons per hour. It Is anticipated that only one
bo I 1 e r w 111 be requIred. The cIty ha 11 Is equIpped wIth hot
water heat as well and It Is also oil fired. Individual houses
have Individual space heaters and they are apparently gun type
heaters, although I did not see them.
J. Telephone System
Te 1 ephone system Is owned by A 1 ascom, the te 1 ephone cab 1 es are
burled above the power cables In the same trenches. Apparently
there are many extra pairs and If a load governor control system
Is utll ized 1 the telephone system perhaps can be used. The
underside of the board walks could offer a chase for low voltage
control cable.
K. Trident Electrical System
Trident Seafoods Is capable of producing 500,000 pounds a day of
frozen fish. When In full production they run a cat 3512 which
generates 900kw and at times a 399 which generates 800kw. The
rest of the time, they have three 388s which they run. Mr.
Levitt states that they seldom run on one engine.
5
AKUT :_..,~:
III. Project Features
A. Dams
The proposed main dam for the west stream Is a rock filled
structure with steel spillway. The proposed substitute for this
dam, a timber dam, would be constructed of pressure treated
timber. Calculations show 2x decking, 4x10 verticals on 32"
centers and 4x4 posts are all that's required. The dam should be
about the same height as was selected, that Is, about 8 feet.
The primary cut-off would probably be concrete though It might be
necessary to 1 lne the entire reservoir with some type of
membrane. Active storage, the upper 3 feet, Is estimated at 1900
cubic feet. It Is proposed to Install a large wooden trash rack
and use two slide gates, one for drainage, and one for the
p I p e 1 I n e • A d r a I nag e s 1 I de gate , of the Armco I r r I gat I on type ,
will be attached to a culvert and used for diversion during
construction.
B. Pipelines
The pIpe 1 I ne p 1 an proposed by Ott Hater recommended that the
upper half of the pipeline would be constructed of 12 11 high
density polyethylene pipe, approximately SDR of 26, which would
have a minimum of 70 psi working pressure. The lower half of the
pipeline would be 12" steel and would be 12.75 OD, 600 psi rated,
AS T M A 3 6 s tee 1 w I t h 1 I 4" w a 1 1 • The p I p e wo u 1 d have be 1 1 and
spigot couplings and would be lined with polyurethane vinyl to
reduce corrosion. The routing of this pipeline Is generally
along the west bank of the creek In almost a direct line to the
powerhouse. In It's upper section, the polyethylene passes
t h rough a p p r ox I mat e 1 y 3 5 0 ' of r o u g h t e r r a I n • F rom t hat p o I n t
onward, the pipeline proceeds downhill, dropping steadily, until
It crosses three major gullies. The route Is fairly good but
would require a number of support structures and would be along a
side hill. The polyethylene pipe Is proposed to be supported on
sleepers, and the steel pipe Is proposed to be supported on
fabricated steel supports and anchor system with the pipeline
entirely above ground.
An alternative, optional, route was looked at. In order to avoid
the bad gullies and provide a better access to the pipeline, the
pipeline would leave the dam and pass through the Initial 350' of
rough gullies. From that point, travel along the hillside,
dropping roughly at about 2' per 100' so that It would pass over
the head of all three major gullies. The heads of these gullies
are very steep, deep holes. After passing over the heads of
these major gullles,the pipe would make a long gradual turn and
proceed down along the west side of the gullies until, following
the fall line, It would reach a point where It turns gradually
and parallels the proposed pipeline to the powerhouse. This new
route adds seve ra 1 hundred addItIon a 1 feet to the 1 engt h. The
upper section of the new proposed pipeline would also be
polyethylene, but could also be PVC, or filament wound. Jt
6
would be on the ground Instead, and would be tied back to anchors
set In above the pipe (see drawing). There are many reasons for
this: 1. If an Individual anchor falls the pipe will not lay on
top of It 2. The snow pack gets about 12' deep there and
uniform support of the pipe Is Important. 3. There Is no
purpose In putting sleepers on the soft ground. 4. The pipe
actua 11 y wou 1 d be more stab 1 e and have 1 ower downhIll creep
forces on It, If It Is In a lower position close to the ground.
5. It would be less prone to freezing than elevated, where the
wind can scour under It and create potential freezing hazards.
It Is reported to get as low as 8°F In town, probably colder at
higher elevations. The winds are high and heat can be extracted
quite readily, especially when water flow Is at a minimum, which
usually Is the case under these conditions.
The pIpe wou 1 d proceed downhIll unt 11 It reached a poInt where
the polyethylene was no longer able to carry the Internal
pressure, or where the economics called for a change to filament
pipe. The proper choice from that point Is bell and spigot
fiberglass reinforced, PVC Inside lined, 12" diameter pipe. This
pipe comes In 20' joints, weighs about 160 lbs., Is capable of
carrying 250 or 350 psi Internal pressure, which far exceeds the
rated 500 (approximately) feet of head. This pipe would be laid
up from the very steep 45° ell ff above the powerhouse to the
junction with the PVC pipe. From the top of the cliff to the
powerhouse there would be steel pipes with fabricated bends and
dresser couplings. Rock anchors would be provided at the top of
the cliff. They would be comprised of a steel fabricated band
with appropriate connections for rock anchors, set Into the rock
at the bend. To keep the bell and spigot rubber gasketted joints
together on the Permastrand type pipe, a technique would be
employed similar to that utilized by miners, who have a lot of
hydraulic experience and build many temporary pipelines. Two
steel cables would be provided. These cables would probably be
somewhere In the order of 7/16 extra high strength steel
galvanized guy wire. A cable would be placed on each side of the
pipe (see sketch). There would be a special clamp design that
would fit over each pipe against each bell, that would clamp the
cable and also clamp the pipe. These clamps would be very
Inexpensive and the process of tightening the clamp on the cable
would also tighten the clamp on the pipe. A sketch Is attached
for this particular type of device--It could be constructed of
fiberglass or galvanized steel. At Intervals along the plpel lne,
soil anchors would be provided to hold the steel cables. These
anchors would be of the line hardware type, like Nevercreep, that
require a small diameter dug hole with the rod driven Into the
anchor hole and then the anchor hooked onto the rod. Under the
end of each rod wou 1 d be a treated 4x4 tImber to keep the rod
al lgned properly with the cable. The cables connecting the
anchors would be of lower breaking strength than the main cables
so If one of the anchors moved, It would not break the main
cable. In other words, If there Is soil movement at an
Individual anchor point, the pipe would remain Intact. This
system Is advantageous In It that If there Is Instability the
7
entire system will basically lay on top of the ground without any
destruction--unless the entire mountain side slides.
A rough estimate based on Information at this time, would be that
I t wo u 1 d r e q u 1 r e about s I x an c h o r s to res t r a I n t he p I p e 1 I n e •
Anchors are relatively Inexpensive, about $30 each and probably
would each take about one man-day or so to Install. The anchor
strength would be based on total support of the pipeline with no
consideration for friction. The fiberglass pipeline would go in
very rapidly, would sit on top of the ground, would be flexible,
(the joints have flexibility of about 1 1/2°), and as it lies on
the fall line, It would not be subject to side forces, unlike the
proposed pipeT lne. It would not need any supports underneath lt.
It might need a minor amount of hand grading In a few selected
places If It looked like the pipe was sitting on a hump. Bends
would be made In long sweeps without fitting's. Discussions with
the manufacturer Indicate that an Inhibitor Is probably provided
In the resin, however, It may be appropriate to paint the top of
the pipe with either tar, or some other material to reduce UV,
though UV Is not anticipated to be much of a problem In an area
with such cloudy weather. The pipe, being against the ground,
would have the advantage of being less prone to freezing, and It
would be less subject to snow creep forces. It wouldn't have the
prob 1 ems of 1 a rge down-forces caused by snow compact I on In the
gullies. And of equal Importance, It would be very easily and
very rapidly Installed. In fact, there Is no reason why the high
pressure section of this pipeline could not be Installed within
several days by a four man crew. The price Is reasonable, about
$11 per foot.
In the area, from the dam to about 350' below the dam,
polyethylene pipe Is to be used, as was stated In the earlier
report. Rather than attempting to route the pipe along the
hillsides, even though polyethylene can be bent to a 40 diameter
radius, It would probably be better if It was routed right
straight through from the dam, crossed over the creek and along
the banks, etc., In a relatively straight line. In this
particular case, a wooden support system would be proposed (see
sketch), which would be comprised of two 2x12s cross members
underneath and appropriate support structure that would cradle
the pipe. The pipe would be fastened Into these support
structures and would just traverse the 350' In as straight a
fashion as possible. Polyethylene pipe, 12" diameter, can only
support Its own weight, when full, slightly more than 6'. With
the potential for heavy drifts In the gully and the compaction of
the drifts over time and It Is not deemed advisable to attempt to
support polyethylene pipe In the air or along the side of these
very steep gullies and around all the bends. The price on this
350' of timber support structure would be very reasonable and It
would be very easy to erect because It would be simple timber
requiring a few longitudinal anchors. It would essentially be a
continuous small bridge structure.
8
AKUTAN
c. Powerhouse
What was originally proposed Is a steel frame powerhouse with
concrete floor and concrete footings with the footings some
substantial distance (42" below grade) The bu-Ilding size
proposed Is 22'x24' In extent.
1. The size of the building can be reduced considerably,
probably to about 16'x22' or less.
2. Concrete Is expensive In this area because all aggregate must
be shipped ln. Price of shipment Is $160 a ton, roughly,
est I mated by North 1 and Barge ServIces and that wou 1 d mean that
every single cubic yard of concrete would cost somewhere In the
order of $300 or $400 for material alone. Further, foundations
don't have to be 42" below grade In this area, because the depth
of frost penetration Is less than 1'. There Is no reason to put a
deep foundation In unless It Is for structural purposes. A
viable alternative Is to build a powerhouse entirely out of
treated wood. This would Include the tailrace structure as well
as part of the turbine generator support system. FoundatIons
would only be about 1' or so under ground, but would be provided
with hold down anchors to restrain the building against the
possible 150 mph winds. The building floor would be comprised of
compacted gravels and rock from the beach. This would either be
topped with treated 1" plywood flooring, or steel plate,
galvanized on both sides and/or urethane painted. The building
would be constructed of treated wood with 2x6 walls, studs
located 24" on center, 3/4 11 plywood, 3/8" rough sawn would be
overlapped on the outside, the roof would be 3/4" plywood.
Kllp-Rlb roofing, made of galvanized sheet, would be used for the
roof covering since It Is designed for In excess of 150 mph
wInds. The found at I on for the unIt wou 1 d be of treated wood
bolted together with galvanized bolts or lagged together with
galvanized drift pins. A three point support frame, fabricated
In Seattle, would match up with all turbine-generator bolts. The
unit would be pre-aligned In Seattle and shipped In Individual
parts unless the entire assemble can be handled by the crane and
set up above the beach In the genera 1 powerhouse a rea; It wou 1 d
then be skidded Into place. The bolts for the tailrace assembly
and the support structure for the generator would terminate In a
grid type sub-surface foundation which would provide hold down
because of the mass of the surrounding soil above It and hence
stabilize the unit. A minimum mass of at least three times the
rotating mass of the generator turbine flywheel would be
provided. Systems such as this have been used In the past In
Alaska and have been effective over a great many years.
Cons I de rat I on wou 1 d be gIven to re 1 ocat I ng the powerhouse much
closer to the stream. The tailrace would be excavated directly
Into the stream. There would be no CMP tailrace system. If the
erosion was excessive, gablons would be put Into place and filled
with rock. The current location of the powerhouse Is close to a
large garbage disposal pit and there is considerable garbage In
the general vicinity. This area has been used for waste disposal
for a long time. The area closer to the stream bank would
probably be more stable. The powerhouse would be Insulated with
9
fiberglass insulation. The Interior of the powerhouse would be
one or two layers of 5/8 x-rated sheetrock.
All fact lttles In the powerhouse would be Installed In such a
manner as preclude to the greatest extent, fl re. There are few
combustible Items In the powerhouse, except for the governor oil,
and Tt Is not anticipated that fire will be a hazard for this
structure.
D. Controls
What apparently has been proposed was standard Impulse wheel
controls which comprise of a unit governor, a jet deflector with
needle follow-up. The proposal makes some brief mention of head
level controls. Review of the equipment plans for the unit,
presently stored In Seattle, needs to be made to determine which
system has actually been provided. The proposed system would
would control the frequency based on the load demand of the
community. Therefore, Akutan would have no means of determining
how much power was available from the unit unless they loaded the
unit to a point where the frequency began to drop (which would
Indicate that they are trying to use more water than was
available). A better proposal Is that a load governor Is used on
the system. The load governor would be located In the town,
probably In some central location, such as the diesel powerhouse,
the school, or In the community buT ldlng. The load governor
wou 1 d sense frequency and add 1 oad, thus keepIng the frequency
constant. This sensing would be under micro-processor control.
The load, which would be added, would be Increments over and
above that required by the towns normal electrical demands. These
Increments of load could be prioritized with up to 8 or more
Individual load blocks. These load blocks could be used to
provide heat to the communities buildings, to the school, and to
the Individual homes. The turbine Itself would be under head
level control. Head level control would be a device such as Is
produced by HOH. It Is a PID (proportional Integral, derivative)
controller, which would directly control the needle valve of the
unit. The needle valve of the unit would be taken off the cam
system control valve that It Is currently on. A l lne would be run
directly from the hydraulic pump-accumulator system of the
governor to a separate set of electrically controlled valves
which would open and shut the needle valve as required by the
amount of water In the reservoir. The stops on the needle valve
would be set so as not to exceed a maximum power output and to
not cause the needle to be jammed Into Its seat. The jet
deflector on the turbine would be set to close onto the stream at
frequencies over 60 cycles. This set-up would be arranged In
such a manner that In case of failure of the load governor, the
unit would go under deflector operation entirely, and operate
with the frequency slightly above 60 cycles. The load governor
would be of a type similar to that produced by Thompson & Howe.
The governor has been used extensively throughout the U.S. and In
other countries and It has proved to be a very reliable piece of
equipment. There would, however, have to be some checks Into
10
A.KUT AN
whether the power from the SCRs would generate secondary
frequencies, which could Interfere with radio communication. A
load governor Is capable of holding frequencies within a fraction
of a cycle or within about 10 seconds or so per day depending on
the micro-processor clock. To parallel the diesels with this
system, the diesels governor would be set with speed droop. The
diesel engine would be sychrontzed and as the frequency dropped,
the diesel would add power. As frequency starts to drop, the load
governor would have shed all Its extra resistance load blocks.
Inter-connection with Trident Seafoods Is possible and they would
be a market for power. However, at this time because of their
large size, and their special needs, It Is not proposed to
connect to Tr t dent Seafoods. It Is ant I c I pated that with the
load governor a substantial amount of heat will be available each
year. The governing system will probably be paid for within the
first year or year and a half. From then on the town will
continue to enjoy the benefits of the extra power which they
couldn't utll lze otherwise. A micro-processor water load control
governor from Thompson & Howe costs about $3,200 for a 300kw
unit. Power relays up In the 40 amp size are about $250 each--of
course they would have to be In enclosures. Separate metering
would be required for the connections to determine what the sales
of the heat from the unit would be. A rough calculation of the
available heat from the unit based upon the price of diesel at
$1.06 and the current generation requirements and the generation
anticipated by Ott Water Is $18,000 per year.
E. Transmission System
The transmission system that was proposed Is an overland cable
routed across the creek directly up a steep hillside, reaching an
elevation of about 580' along a fairly steep and rugged slope,
generally paralleling the contours. It has to cross several
fairly large gullies, and other areas of potential rough terrain,
along side slopes In the order of 20%, then It drops down a steep·
nose, adjacent to a gully, crosses a deep gully or stream and
then traverses along the hillside Into town. The estimate for
this cable work was $286,200. The length of this line Is about
8,300 horizontal feet, or probably In the order of 8,600 or 8,700
feet overall, after construction Is completed. One of the
problems with this line location Is that It Is located at high
elevations on a sldehlll and would be hard to get to In the
winter when the snow Is deep at the higher elevations. Reported
snow depths reach 12' so It could be very difficult to maintain a
1 lne under these conditions. Alternatives proposed for this
construction are two. One suggested by Peter Hansen of A.P.A. Is
to use armored cable similar to that used at Elfin Cove and
surface lay the line, anchoring It down at appropriate locations,
so It won't be carried down the hill by snow creep or other
kinds of slope problems. A second method would be to utilize a
submarine cable along the shorel fne. The submarine route would
roughly be about 8,000 feet In length and would parallel the
shore at a depth of about 15' but not In the area which Is used
11
by boats for anchoring purposes. Submarine cable such as this
has been utilized In Homer, Port Graham and for crossings such as
Seldovia Bay. It would be 25kv cable, 260 mil Insulation. The
mlnlmum size conductor for this load would be no. 1, full
concentric neutral with an outer jacket over the concentric
neutral. Thls cable Is priced at about $1.25 per foot, as
compared to $.89 for standard cable. Laying costs would be low
with only trenching required at shore ends. It would be easy to
retrieve as It weighs less than 1 lb. per foot. It has slightly
negative buoyancy so It wouldn't be difficult to bring to the
surface even when utilizing a modest sized boat. Advantages of
this type of cable are Its low Initial cost, Its ease of
Installation, Its ease of repair, Its general overall safety Is
probably comparable to that of land cable and It certainly would
not be exposed to s 1 I des or downs 1 ope so I 1 movements. On the
negative side, this cable would have to pass Trident Seafoods.
This could be done either overland If permission was obtalned,or
around or through the new 400 foot dock. Boats don't anchor In
this vicinity, but ships do come ln. Care would have to be taken
to place the cable In a location where propellers would not be
able to make contact with the cables. When consideration Is
given to the cost comparisons between the different forms of
construction, overland or In the water, It should be noted that
one could afford to keep an entire run of spare cable at Akutan
If the submarine route were selected In the event that there was
an emergency where new cable was required.
F. Alternative Site
Across the bay, approximately 4,500' to the south west of Akutan,
Is another stream which had about 37 1/2% more water In It than
the proposed stream, when It was measured. ThIs stream appears
to have a larger drainage area, It also has two branches, similar
to the selected project stream. Based on marine charts, a 700'
plpel lne would be needed on the west branch and a 1,410 1 pipeline
would be needed on the east branch (thls appears to be the branch
with the greatest drainage). The pipe required for the branches
would probably be 8" and 10" respectively. The branches would
connect to a 12" pipe and proceed another 1,350' to the beach.
Just above the beach the powerhouse would be placed on a bench,
roughly at the same elevation as Is proposed for the north stream
powerhouse. A direct cable route would proceed 4,500 1 , which Is
approximately 3,500' shorter than for the originally proposed
site. Construction cost would probably be roughly be the same as
for the current project. According to Tom McGlashln, there Isn't
a single day that they couldn't get across the bay to service
such a site. In fact, It Is likely even the selected site would
be serviced by boat, since It's 1 1/2 miles down the bay and few
of the local people would want to walk this far over the rugged
terrain. However, It must be remembered that there are days with
150 mph winds. It Is assumed that boats would not cross under
those conditions.
12
One advantage of this site Is that It appears that the terrain Is
not as steep and It might be easier to construct, and there will
not be an Initial 30' or 40' steep hillside that Is going to have
to be surmounted on the presently proposed site.
Some of the disadvantages of this site Is that no engineering
work has been done there, and there Is no topographic or other
data available. Further, ships anchor off Akutan and even
though flashing beacon markers would be provided on the cable
shore ends, high winds could cause them to drag an anchor and
sever the cable. The site for the powerhouse has less room than
the north site. Some leveling would have to be done; there Is not
room to stage the operations at the powerhouse, material would
have to be staged on the beach, and there Is not much area there.
In terms of operation, It would probably be as easy to operate
from this particular site as It would be from the selected site
on the city side of the bay.
13
IV. Federal Energy Regulatory Commission (FERC) Licensing
FERC licensing will not be a problem at either site. What would
be required at both sites Is a "Declaration of Intent", which
simply answers certain criteria which FERC uses to determine
whether they have jurisdiction. The criteria basically are: Is
the project located on Federal land? Is It on a navigable
stream? Does It have a government dam? Does the power from the
project cross State lines (Interstate commerce)? And are there
headwater benefits?
Based on the data provided (stream profile, land status, lack of
government dam, no crossIng of State 1 I nes) the Feder a 1 Energy
Regulatory Commission will find that they have no jurisdiction.
Such a finding was made recently for the Pyramid Creek project,
under application by Energy Stream, Inc and they received their
statement of non-jurisdiction from FERC.
Attached are the declaration of Intent requirements. These
requirements will have to be completed on either the north
project (Akutan side), or the south project--or both--they really
do not require a great deal of additional effort. The preliminary
design work already meets these criteria for the north side and
very little work would be needed to do the same on the south
side.
14
V. Slope Stability and Seismic Risk
One of proported reasons that the project was previously
rejected,tn addition to the high cost, was because of the
potential for slope fnstabil tty and tsunami danger. Based on the
new designs that are proposed, slope instability over localized
areas under the pipeline should not be a significant problem for
safety of the project. The project should be able to continue to
operate and will only need some remedial adjustments In the
anchoring systems. Observation of the slopes In the vicinity
show evidence of past slope Instability in Isolated areas In very
steep locations. There Is also some evidence of down-slope soil
movement and piling up of material in other locations, indicating
that gradual solifluction Is taking place. Gradual solifluction
will not be a problem for this project as It Is proposed to be
desIgned. Movement under the pIpe can be accommodated In the
support and guy systems. Several yearly inspections, one at the
end of the spring, will be made to determine the system
condition. This should be a requirement of the operations and
maintenance plan. More frequent Inspections will be required in
the initial phases of the plant operation. Observation over
thousnds of feet of slope along the shore show no signs of recent
major slope instability in the vicinity, and leads to the
conclusion that the probability of rapid slope failure In the
area of the pipeline, Is low. It Is a well known fact that there
have been a number of fairly sizeable earthquakes on the chain
and there Is no sign of recently triggered major slides in this
area. In terms of the seismic wave, local people reported a two
foot rise during the 1964 earthquake. During 1947, a tsunami
wiped out Scotch Cap 1 I ght house wIthout any rea 1 evidence of
water rise at Akutan. Akutan has been contInuous 1 y occupIed
since 1874 and has gone through many major earthquakes. The
people of Akutan report no problems from seismic waves. Akutan
Itself is located closer to the water than the powerhouse and the
beach front homes get Inundated during storms which occur during
high water. If a tsunami occurred In the bay, the town would be
destroyed before the powerhouse would be effected. With no town,
there Is no need for a powerhouse. The people of Akutan and the
proposed powerhouse would be at no greater risk, In fact probably
at considerably less risk, than those people located In
contiguous U.S. coastal areas; along the gulf, Florida, and other
coastal areas subject to hurricanes and other wind driven, high
water events.
The philosophy to be used In determining small hydro-electric
power plant feaslblllty, located In communities such as Akutan,
should be different than that utilized to examine large power
plants, which are the major sources of supply for thousands of
people and pose great risks if a dam or some major conduit should
break.
On a small power plant of this type, which Is more than 100%
backed by diesel engines, the method of examining whether risk Is
of consequence or not, Is to determine the economic consequences
15
to the project Itself. If the risk has one chance In 1.,000., or
one chance In 1500 of occurring., and such a risk and Its
consequential costs are "present worthed"., the conclusion Is
made that un 1 ess It's a very probab 1 e event and catastrophIc
risk, the economic costs or losses due to the exposure are
extremely low. Such a low exposure case Is the more likely
situation at Akutan. If desired., a risk analysts can be run.,
usIng approxImate numbers to show theIr effect on the actua 1
project economics over a life-time of operation. However., such
analysts Is highly subject to assumptions., such as return
frequency of event., magnitude event, failure at an Individual
project component, etc.
16
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VI. Conclusions
1. The baste conclusion Is that this project can be greatly
simplified and It could done at much lower than estimated price,
with more local labor, without a lot of brought In machinery, no
spec I a 1 too 1 s or eQuIpment. The project appears to be
economically viable with the addition of a load governor and
would use all the energy that Is available In the stream system.
Akutan Is fortunate as It has excellent water resources In close
proximity with streams, 1 1/2 miles to the west and less than
one mile to the south.
I f t he p r o j e c t p rove s to be e con om I c a 1 and I s de v e 1 oped , t he
people of Akutan will be very fortunate as the price of diesel
fuel rises over the years and the cost of their buying power
remains constant.
2. The conclusion Is that seismic or slope stability risks are
not great and that these risks are not of sufficient magnitude to
affect project economics. Even a detailed risk assessment would
not be able to arrive at really accurate conclusions. A detailed
risk assessment would suggest that there are risks, that the
risks have certain time-lines, but would not be able to, with any
accuracy whatsoever, determine what the probability of failure
would be for such a small power plant. When consideration Is
given to the low mass of the system, the low cost of replacement,
the low cost of constructing the entire system, the simplicity of
the system and It's great flexibility as currently proposed to be
built, there Is almost a negl lgible chance of any significant
economic losses taking place.
17
AKUl Ar~
VII. Recommendations
In general, the north side project Is extremely easy and simple
to construct. The mod If I catIons proposed for thIs project are
such that almost the entire project could be built without any
heavy construction equipment. Logistics would be as follows: all
the mater 1 a 1 wou 1 d be de 1 I ve red by barge and off-1 oaded at one
tlme, material would be moved up the hill during the early part
of the summer with winch and then with small tracked vehicle,
construction would proceed and be completed on the powerhouse and
pipeline. In August, the material would be flown In for the dams
(If It has not been packed In and the dams already constructed).
Polyethylene pipe can be snaked a long way with winch 1 lne under
the right circumstances. The entire design of this project Is
prepared to be done mostly by hand In the very simplest manner
possible, with the very minimum amount of materials and labor.
The project appears to be very viable In terms of economics. A
ba 11 park est I mate, based upon no deta I 1 ed data, Is that the
project should be able to be constructed for under $400,000.
A. Stream Gaging
It Is proposed that stream gagIng be contInued throughout the
year and Into the construction period. It Is proposed that APA
make whatever arrangements are necessary even to the extent of
paying some money to have Tom McGlashln and/or someone In Akutan
continue to read the gage at the lower stream. It Is also
proposed that some current meter readIngs be made to provIde a
rating curve for the staff gage.
B. Snow Creep
It Is strongly recommended that snow creep measurement devices be
provided. These would be comprised of small pieces of plate and
rods with known bending characteristics. It would be a go/no go
situation. They should be Installed this winter to determine If
snow creep will be a problem In the area. Local people report
that they've never had avalanches or other down slope problems.
C. Cost Estimate
A cost estimate should be provided before the project goes
substantially further. The cost estimate would show, not only
the cost of construction of the project, but also the potential
benefits that could be provided.
D. Survey
A topographic survey may be required for certain selected project
features, before final design takes place. A field survey should
be performed on the ground. If the alternative site to the south
Is contemplated, a field survey should be done on that site as
well. A field survey can be extremely simple and modest In
18
AKUTAN
character because the whole country Is open and It Is fairly easy
to do. The only problem might be the weather. It is recommended
that the alternative south site be looked Into further If
sufficient water Is not found In the proposed north site. In
fact, the alternative site probably should be explored In any
event as the construction cost probably would be similar or equal
to that of the proposed site, and the power output substantially
higher.
19
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East fork, north site diversion dam site, Art Stepletln, marked
with red topped flats, 1.46 CFS.
Another view east fork diversion site.
1 EXHIBIT 3
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North site, west fork dam site top stake @ 10' 2.439 CFS on
November 1, 1985.
Another view showing east side of the above stake@ 10'.
2 EXHIBIT 3
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North site, west fork, looking down stream from dam area. This
350' or so would have elevated pipe.
Another view of the above, once pipe reaches bench top, right
photo, supports would end.
3 EXHIBIT 3
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Typical pipeline gully crossing for proposed route.
Looking up above gully--new route proposed above head of gully
system, note water In bottom of gully.
4 EXHIBIT 3
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North site, looking down along alternative pipeline route which
runs to right of gullies on uniform slope. Note gullies crossed
by earlier proposed route. This would also be supply route for
tracked vehicle for pipe and material mobilization. Floating
processor In bay. Stream to center left.
Looking up at the above. PE pipe would be above gullies.
small mounds which could be created by solifluction.
Note:
(..
) EXHIBIT 3
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North s1te, steeper p1tch Just before 100% slope to bench. This
slope measured about 45% and Js the steepest slope wh1ch can be
traversed by tracked equ1pment.
North sIte 1 1 ook I ng down
proposed center foreground.
dumping of waste.
on powerhouse
Note garbage
6
bench. Powerhouse
pit evidence, much
EXHIBIT 3
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aseq 'le a'lJS a6e6 O'l 4:>uaq asno4..1aMod WO..I;l-6uptooa 'a'ltS 4'l.JON
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North site, lower staff gage Installed on 5/8 al. rod driven to
refusal, Marsh McBurney In foreground. November 1, 4.902 CFS
Another view of powerhouse site.
8 EXHIBIT 3
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North site, looking from bench to powerhouse site hence to 100%
slope, hence up uniform 45% bench just to left of stream.
Bay view of above.
9 EXHIBIT 3
South site from bay, note lack of easy powerhouse location .
As above from further In bay.
10 EXHIBIT 3
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Another Bay view of south site. Clyde Levitt of Trident, whose
window looks at this side, stated creek flows year around like
this.
11 EXHIBIT 3
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Gaging the south site, November 1, 1985, 6.74 CFS. Note snow on
mountains, Akutan across bay.
Looking upstream at above stream.
12 EXHIBIT 3
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Akutan timber water supply dam, note spillway.
Akutan Insulated water supply 1 lne, approximately 4" PVC w/al.
jacketed urethane foam, wood stave hydro pipe under. Note leak,
left side of photo where pipe pulled apart due to snow creep and
was winched together.
13 EXHIBIT 3
POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA 99507
(907) 561·1933
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POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA .99507
(907) 561-1933
I
SHEETNO.-------OF-----
CALCULATED BY ______ DATE-----
CHECKED BY------DATE-----
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POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA 99507
(907) 561·1933
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PIIOIOO' 2114-1 (NE!BS/Inc., G-. Mass. 01471.
POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA 99507
(907) 561·1933
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POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA 99507
(907) 561-1933
SHEET NO.--------OF-------
CALCULATED BY-------DATE _____ _
CHECKED BY--------DATE------
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POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA 99507
(907) 561·1933
SHEETNO.-------OF-----
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POLARCONSUL T ALASKA, INC.
2735 East Tudor Rd. Suite 201
ANCHORAGE, ALASKA 99507
(907) 561·1933
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I 20.2 . Title 11-Coa..,...._ ef Pewer, W..., ... .._.
10 days prior to any proposed aeeurlty
lasuancr which Is within the aoope of
section 19 or section 20 of the act, but
excepU>d by paragraph ca) of this aec-
Uon, any person or state entitled to do
ao undf'r section 19 or section 20, ma:v
file a complaint or request In accord·
ance li'ilh the applicable rules of the
Commil'-'lion, or the Commlsalon upon
Ita own motion may by order Initiate a
procef'dimr:. raisln1 the question
whelhf'r lsauance or such· security
should be subJected by Commllalon
order to the provisions or 1 20.2. After
noUce of such fillns or order, and until
such request. or complaint is denied or
dismiasf'd or the proceedins Initiated
by such order Ia terminated without
subJectlnl the lsauance or the aecurlty
t.o the provisions or I 20.2. the security
In quest ion shall not be lsaued except
It be issued subject to and In compii-
III'IICe with 1 20.2.
CBea. 31111, lit 20, 41 St.al. 1013. lO'll: Seal.
201, JOi, 49 St.at.. 831, IN; II U.S.C. 'ltl Clll,
112. 113. 825kl
(Order 1'10, ll PR 2013. Apr. I. 11&41
I zt.2 Kt-1111aUo• oll•uanc~ or ~rlUa
The licensee or other person l.asuln
or proposin1 to Issue any security au
jected to this section by or pursuant
I 20.1. shall be aubJect. to and shal
comply with the same rf'qulrementa as'
the Commission would administer to It
If It were a public utility lssulnl the
security within the meanin1 and aub-
Ject to the requirements of section 204
of the Al't and Part 34 of this subchap-
ter.
CBea. 3tUll. II, 20. U St.at.. 1013, 10'13: Seal.
101, JOIJ, 41 Stat. 131.111: II U.S.C. 'ltl 1111.
112.113,126k)
(Order no. 11 PR 2011. Apr. a. IIMJ
c.ou Ranauc.:: Por appllcat.lona for au
thorilatlon of t.hf' ialuanc~ of aecurtt.la o
the .. umptlon of llabiiiUea, He Put 14 o:
lhla chapt~r.
PAIT 24-DECI.AIATION Of
INTENTION
uu •·ut..,.
An orlclnal and ten conformed
copies of t>ach declaration of intention
under the provb;ions of section 23<b)
of tht> Act ahall be> filed. The declara-
Uon shall &lve the name and poet
office address of the penon to whObl
correspondence ln re1ard t.o It shall be
addre88ed. and lhaJI be accompanied
by:
(a) A brief de8crtptlon of the Pro.
posed proJect and Ita pui'J)(IRI, lnciUd.
lng such data u maximum hel1ht of
the dams, a slorqe capacity curve of
the re8ervolr or reeervotn abowtna the
mulmum, averqe, and minimum op..
eratlns pool Ieveli, the lnJtlal and Ult.l.
mate Installed capacity of the ProJect,
the rated honepower and head on the
turbines. and a curve of turbine dla-
charae venus output at averqe and
minimum operatlna heada.
<bKl) A seneraJ map <one trac1n1
and three prtnta) of any convenient
alze and scale, showtna the stream or
atreama t.o be utllbled and the approxi-
mate location and the seneral plan of
the proJect..
<2) Also a detailed map of the pro-
POled proJect area ahowlna all Federal
lands, and Ianda owned by States, If
any, occupied by the proJect.
(3) A profile of the river within the
vicinity of the proJect showl.na the lo-
cation of the proposed proJect and any
exlstlnllmprovementa In the river.
<U A duration curve and hYdrosraph
for the natural and proposed reaulat·
ed flows at the dun site. Furnish ref·
erencea to the published streun now
recorda used and submit copies of any
unpublished recorda used In prepara-
tion of these curves.
(C) ( U A definite statement of the
proposed method of ut1Uzln1 storace
or pondqe seasonally, weeki:V and
dally, durins periods of low and
normal nows after the plant is In oper·
ation and the system load hu l'fOWD
to the extent that the capacity of the
plant is required to meet the load. Ji'or
example, furnish:
(l) Hydropapha covertns a lo-da:V
low water period showlftl the natural
now of the stream and the effect.
thereon caused by operatlona of the
proposed power plant:
(II) Similar hyd.ropapha coverlnl •
10-day period durina which the cUa-
charle of the stream approxlmat.a ••·
erqe recorded yearly now, and
(ill) Similar hydro8T&Pha coverlnl a
low water year UIIDI averqe monthlY
nows.
r I ....... .....,., 1-.ul•tery C...lt .....
<2) A system loe.d curve. both dally
and monthly, and the position on the
1'*' curve that the proposed proJect
would have occupied had It been In op·
eratlon.
(3) A proposed annual rule of oper·
... ton for the st.oraae reservoir or rea·
ervoln.
caeca. U. JOIJ, 41 8taL.I41,161; 11 U.B.C. Ill,
111. 121h; Pub. L. tf-1511, H Stat. 2112 144 u.s.c. 11501 el JeO.))
rOrder I'll, II PR 153l'l, Aua. II, 11154, u
111Mnded by Order 310, 21 PR 1115, Jan. ll,
aJAJ ----
'All' 25-APPUCATION fOI VACA·
TION Of WITHDIAWAL AND fOI
DITEIMINATION PEIMiniNG IES..
TOIATION TO ENTIY
Bee.
111.1 Cont.ent.a of application.
IU Hearlnp.
1 J5,.1 Cont.e11t.a ola.,llcat.lon.
AnY application for vacation of a
reservation effected by the llltn& of an
application for preliminary permit. or
llcenae, or for a determination under
the provisions of section 24 of the Act
permlttln1 restoration for location,
entry, or selection under thf' public
Ianda law, or such Ianda reserved or
el&alfled u power lites shall, unleu
t.he subJect Ianda are National Forest
LAnda, be flied with the Bureau of
lAnd Nanacement. Department of the
Interior. at the Bureau's office In
Waablnston. D.C. or at. the approprl·
ate ftJional or field office of the
Bureau. If the Ianda Included In such
IPPllcatlon are National Forest. Landa,
the application shall be filed with the
U.S. Forest Service. Department of
Acrleulture at the Forest Service's
office In Wuhlnston. D.C •• or at the
IPI:Iroprlate re1tonal office of the U.S.
Pofelt Service. Such application shall
eontaln the followlnl data: Ca> Full
ftlme of applicant: <b) poet-office ad· *-: <c) description of land by le1al
IUbdlVIIIona, lncludlnl eectlon, town·
lhlp, l'l.llle, meridian, county, State,
and river buln Cboth main and trlbu-
t&r,) In which the land Ia loeated; Cd)
~bile land act under which entry Sa
111tended to be made If land is restored
to entry; <e) the use to which It is pro-
Poled to put the land, and a statement
u t.o Ita suitability for the I
use.
<Beca. 2•. 101, U Stat. lO'll, U IUD
~t.lll; IIU~.III,I215h)
(Order I'll, 11 PR 15311, Aq. 11,
amended by Order IM, 12 PR '1•11
ltl'l)
C.ou ~ Por ent.rlel •
aectlon ~ of the PederaJ Power Acl
43 CPR Subpart. 2320.
IU.J Heutnp.
A hearlna upon such an &PI
may be ordered by the Comm1
Ita discretion and shall be in
ance with the provtalona of Sl.l
of Part 386 of this chapter.
NOT'Ir 1: On Aprtl l'l, 1122. the Co
made the followlna pneral deWrmt
Ca) That where landll of the Unit
have heretofore been. or hereal&e1
reserved or cl .. lfled u power .a
reservation or cla.Jflcatlon bell
110lely bee&UIIe auch la.ndil are eiU
pled b,. power tranam.J..Ion linea or
cupancy and 1.111e for auch pufiiOMII
applied for or authortlled under &DI
laWI of the United Btatea, and A
have ot.henrile no •atue for power :
and are not occupied In ~. 1
mlulon det.ermlnea that the val'"
Ianda 110 reHrved or cla.lfled, or •
for or authortlled. wW not be lnJW
at.royed for the pufi)CIM:a of power
ment by location, entry, or aelecU
the public land laWI, aub,l«:t to th4
tlon or aectton 24 of the Peden
Power Ac:t C418t.at.. 10'115; 1t U.S.C •.
(b) That when notice Ia liven tot
t.ary of the ln&ertor of reaervat.ICI
under the provt.aona of eecUon 3
Federal Water Power Act, such no
lndlc:at.e what landll 10 reaerved, If 1
In accordance with the det.ermlnatJ,
Precedlna ~h, be dedand 01
cation, ent17, or aeleet.lon, aub.Jec:
reaervatlon of Mkl IIIICUon H.
Annua.l Repori, .... la
NOT'Ir :t On PebruarJ 11, 111'1, C
..u.ton &oolt the foUowtnc .m.lon:
Coii!IDT To l:lrr•aa.•.....,. or Ou:
n1cra, Jeevocs or OJWUIIO Pal
L&uiiiO roa OU&IIIo Pvuoaa u
Aft or Jvn 21. 1114, u AMDII
liiUI'MIIII'f ...... ~ .. toll Po1 ....
Upon request under dat.e of Not
liM, br t.be IICt.lna' director, Dl,
On&tnl, Der;IU'tment of the ln&t
COMent of the COIIUII.Lwlon, punua
loCI. of June 21. 111• c•a Stat. 1211
225
polarconsult
2735 EAST TUDOR ROAD • SUITE 201
ANCHORAGE, ALASKA 99507
PHONE (907) 276-3888 • TELEX: 26708 PCA AHG
SHEET NO.--------OF------
CALCULATED sv ___...G--=A~·----DATE (/-11 ... £3;;)
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OTT
WATER
ENGINEERS
INFORMATION/CONVERSATION RECORDS
. ;tl
Date _ _)~~ b · Time __ //--=----~:~?Project No. __fJ_ _3ft)
To _ __L}_(e,% ____ T5&:3J-_________________ Phone No. _f/S-32S-(!J_2~
From---~----_____________________________________ -~~q_ _ _
Subject --nu ---~-"'J ---n _v .... i ~---"P~ , .. 't~C t*i.,Tc~ ----.• -_-~1):~<-~~~~2.-~~-~t~~~~::.t~:)'"S --·--------------~~
_____________________________ d_oo ___ !P_ tY!_ _ __ ___ _ _ ____ ___ _ _ __ ______ _ ____________ _
I '-~rl $;. .. A. e._ / ~ --~ -------~!!----------____ 7t _______ ------------------------------------------~=--_?.:'fJ;7--f'2~-![.s --:: ___ ? s4. L rn~liY'£ __ --+-_
__ /?t!w_ke (@_ too~D) <t3rof+-~r!JJ~e __ -.a /s--0 'I .95.g cub IL -;;;;;J+7sec <. 5·3 ~.e , 0{/J.~----------------------~-------_ ---. ---
-----______ _L8~_ffij_ ___ fo _____ 3_ _:?_~ ____ )~~------
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Ge;-7 e;--u/t;____c_ c; ,.r/ ---------------------------------------__ -------{'l'r .--/ -----------
_________ 5_rw_:zz_p_:z -8 / ~--'-"'-
---------------------------------------\~~---------------------------
____ _2_ 111 or c=_
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/, /('0/.[//) dcJ 4 0/ LE
H~OWER Resources, Inc.
Ms. Fran Rose
Director of Public Works
City of Akutan
308 G Street, Room 317
Anchorage, AK 99501
Dear Ms. Rose:
P. 0. Box 3570
Redding, California 96049
(916) 243-1496
March 27, 1981
--Rll08 0 00 A lc'-'L rn 1\) rJ\
A t oo4. lfU
Subject: Status Report of Turbine for Akutan
In December 1980 the turbine-generator unit was stored pending
start up of the Akutan project. Since that time, the turbine-
generator (seven cases) has been stored in Seattle at the
Milwaukee Motor Transport Company. It is insured by the Roanoke
Agency which includes storage. The storage handling was done by
Harper Robinson, 1000 2nd Avenue, Seattle, WA 98104, Atten-
tion: Twyla. The storage fees you are now paying are $100 per
month.
On March 19, 1981 we mailed first class, special delivery a three-
volume users manual for the turbine. The unit, complete with
accessories, includes the following:
Complete turbine generator
Twin filters
Hydraulic operating valves
Exciter
Regulator
Electrical switchboard
A more detailed list of the turbine generator is enclosed.
If you have any further questions, please do not hesitate to call
me.
ds
Enclosure
Sincerely,
Norman E. Kamp
General Manager
!"
r, <~
SCOPE OF SUPPLY LIST AND SPECIFIC:A TIONS
FOR
AKUTAN HYDROELECTRIC POWER PLANT
AKUTAN, ALEUTIAN ISLANDS~ ALASKA
A. WATER TURBINE (One)
1. Type
2. Model No.
3. Design Head
4. Rated Flow
5. Rated Speed
6. Rated Output
Impulse
CJ 22-W60/l X 6
W -Horizontal Shaft
60 -Runner Diameter 60cm
l X 6 -One Jet Nozzle with 6 em
diameter
149.352 m
0. 1485
900 RPM
178 KW
B. A. C. SYNCHRONOUS GENERATOR (One)
1. Type SFW7 4/ 32-8
2. Capacity 160 KW
3. Power Factor 0. 8 (Lagging)
4. Rated Speed 900 RPM
5. Frequency 60 Hz
6. Rated Voltage 460 V
7. Phase 3
8. Direction-Rotation Clockwise, viewed from the Generator
9. Operating Conditions
a) Altitutde: Not exceed 1000 meters above the sea level
b) Cooling air temperature not exceed +40°C
c) For indoor installation, free from the insect, snake, rats
and etc. attacks.
C. Speed Governor (One) Type TT-75 with 120 volt a. c. operating coil
D. Valve (One) Type Z942H-25 with 460 volt motor operator.
E. Double Water Filter Box (One)
F. Solid State Silicon Rectifier Power Supply for Exciter System (One)
G. Automatic Voltage Regulator (One)
H. Switchboard -Type BKF for the mounting and wiring of Items F & G plus
output voltmeters, ammeters, frequency and KW meters (One)
I. One set of special tools.
J. On_e spare set of bearings and nozzles.
EXHIBIT A Page 1 of 2
A1006.00
TURBINE SPECIFICATIONS
Type: Impulse, Horizontal Shaft
Stock Number: CJ22-~-60/lx6 (Turbine & Generator Set)
Runner Diameter: 60 em
Nozzle Diameter: 6 am
Rated Speed: 900 RPM
Rated Output: 178 KW
Rated Head: 490 FT
Rated Flow: 5.24 CFS
~Type:
Capacity:
Power Factor:
Rated Speed:
A C:
Voltage:
GENERATOR SPECIFICATIONS
SFW 74/32-8 (Synchronous}
160 KW
.8 Lagging
900 RPM
60 HZ
460 Vo 1 ts
APPURTENANCES
Speed Governor: Type TT-75, 120 v AC operating coil
Shut-Off Valve: r~otor Operated Gate Valve
-.
/
1. Included
LXHIBIT A Page 2 of 2
AKUTAN TURBINE/
GENERATOR PROPOSAL
o Import duty
o CJ22-W-60/lx6 turbine and generator set
o Governor and speed control
o Motor operated gate valve
o Shop drawings
o Double water filter box (pressure sensor)
o Solid state silicone rectifier power supply
o Automatic voltage regulator
o Switchboard
o Special maintenance tools
o Spare bearings and nozzles
All equipment mounted on a skid. See attached sheet for
specifications.
2. Not Included
o Installation
o Start up and testing
o Shipping to site
o Warehousing (if required)
3. Cost: $125,641 in Seattle
4. Supplier: Hydropower Resources, Inc.
2400 Washington Avenue, Suite 121
Redding, CA 96001
• I
r ·o liJ ,;i·ou',o 1 (I . ~ .l I jN.A..-
/'' } l (;
I
TO: Ron Ott
FROM: Alex Tseng (via Telegram, Pianjin China)
DATE: June 16, 1980
r I /,·ll \I· \\ t \ . ! I
RE: PRC Impulse Type Unit (Reference Telegram UC2270-14)
JOB NO: Al006. 02
'fo
All PRC impulse type units have flat efficiency curves max 89~
'i'o ~/o ?'tt ·
at rated outputs -4-Gfe or 85~ at 259fQ cable bquipex, Peking latest
Alaska decision.
'
r:;~"-
0
670 r-.E.\EcL •c.:.o
TEL. {.&151 J:5 0925
0
• ?t.tO ALTO, CALIFO~NIA Q~ 3C3
us~
CABLE A!::c;;:.ss TSENGUH
0 I ;-C;, ~ L~ ·,
St.LE5 MART RCOM 368
1485 Bt.YSH0i1E 80ULEV~?D
SAN F~~NC1SCO, CALIFO~N1A 9.& 12.C
TEL {41 5) .&67 -8616 U.SA
ENGINEERING & SuPPLY Co.
Of Tseng Enterprises, Incorporated
Selection of Standard Hydraulic Impulse Turbine Unit Based
On the Following Water Heads (Ft.) and Flow Rates (C. F. S.)
For
Head:
Flow:
Output:
A.
410 Ft.
4 CFT/Sec.
100 KW
ALASKA -AKUTAN IMPULSE
TURBINE UNIT
:s.
460 Ft.
2. 8 CFT/Sec
80 KW
Type: CJ 22-W -55/1 X 5. 5 C J 2 2 -W4 5 I 1 X 4. 5
Rated
Voltage:
Excitation
System:
Power
Factor:
Rated
Output:
Rated
460 V 3 phase 4 wire 60Hz
Self Excitation
0.8
Turbine 115 Kw
Generator 100 Kw
Speed: 900 RPM
Overspeed: 1620 RPM
Governor: TT-35
Model Description:
460 V. 3 phase 4 wire 60 Hz
Self Excitation
0.8
115 Kw
100 Kw
1200 RPM
2160 RPM
TT-35
Type CJ 22-W -55/1 X 5. 5 hydraulic turbine is a water bucket turbine, hori-
zontal shafted with single nozzle. The diameter of fluidics is 5. 5 CM and the
runner is 55 CM. Turbine of this kind is suitable for high water head. Its struc-
ture is simple, easy to assemble and dependable in operation.
The hydraulic turbine is directly coupled with the generator by means of
a rigid coupling. The turbine is ~uipped with double regulating mechanism in-
cluding nozzle needle and deflector. The jet nozzle and needle are all made of
stainless steel. The turbine is equipped with anti-jet braking device, extension
element and gate valve. Type TT-35 automatic governor is used for the set.
The generator used for the complete set is a SFW -Type three phase syn-
chronous hydraulic alternator. Double winding high dielectric, class H insula-
tion, self-excited, constant voltage and exciting system are used for the genera-
tor. The exciter is mounted on the end of the generator. The no-load rated
0 0 0 0
voltage is established by the residual flux. Under the range of zero load to the
rated load, the power factor is ranged+from -. 75 to 0. 95. The voltage regula-
tor of the static controls will provide -3o/o voltage regulation with quick response.
The conditions for normal operation of the generator of the system are:
1. The altitutde of the location of installation should not exceed 1000
meters above the sea level.
2. The ambient temperature should not exceed 40°C.
3. It should be installed in a weather proof house away from corro-
sive gas.
I
I
... -
I
I
I
~
I
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~
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n
1
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1
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51 -
CHAPTER \'I -COMPUTATION OF RESULTS
I. Rererence to gWlranteed conditions
1.1 Using the methods of measurement described in Part 2. the test data shall provide, for each setti!lg
of the turbine guide vanes or needle nozzle, the quantity of water ( Ql, the head ( Hnl and the tur-
bine output (Pd.
When weighted efficiencies are used and repeated tests are carried out for the more important
output and;or discharge with unchanged turbine openings, two or more correlated sets of Q. Hn.
and P, will then be calculated for the same opening (see V.J.2.5).
1.2 If the test conditions do not differ from those set forth in the requirements of Chapter IV, parti-
cularly with respect to the net operating head (Hnl. the test results can be converted to the guaranteed
conditions (Hr) (s~e Vl.3.1 ).
The following equations should be used:
Sf
'I
The turbine efficiency. which is taken over unchanged for this conversion, IS:
Y,r = -~,
1.; • ·; • Q . Hn where k = I 000
102
1.3 If the test head lHn) varies beyond the permissible limits of guaranteed head (H,), the speed can be
' corrected to guaranteed spe!!J as follows :
llr = /In I_!!:_')
Hn
conversely, this relation can be u:.ed to compute the test speed lin when the estimated test heau
(Hnl differs substantially from the !:!Uarantecd head (Hrl (s:c IV.2.3l.
1.4 Using the equ:llions in V1.1.2. the dficil!ncies ·r,, for each point can be calculated. and plotted against
P, or Q.
., Inaccuracies in measurement
2.1 Every measurem~nt is attended by unavoidable inaccuracies in measurement, even when the method-..
instruments and calculations employed correspond exactly with this code. When comparing the
results of the tests with th! gu:uantee figures, these inaccuracies in measurement must be taken
into account in a suitable m1nner. This can be done in various ways.
2.2 Experience with tests on a brge number of hydraulic turbines has shown that the inaccuracies which
occur when measuring head. flow. output and speed may often otTset each other, but in some cases
they.can also b:: cumulative. If a test is carried out in accordance with this code, the resulting aver.1ge
overall error in the results for·':, should be between :::: I ~·~ and ± 2 ~~· The value of such overall
errors may be agreed upon when signing the contract, with due consideration to the measuring
methods to be adopted. When comparing rhe results oi acceptance tests with the guarantee figures.
the inaccuracy for ljc in measurement shall be taken into consideration (see VI.J).
polarconsult alaska, inc.
ENGINEERS • ARCHITECTS • ENERGY CONSULTANTS
November 11, 1985
Alaska Power Authority
334 West 5th Avenue, Second Floor
Anchorage, Alaska 99501
ATTENTION: Mr. Peter Hansen, Rural Systems Engineer
Subject: AKUTAN SUBMARINE CABLES
Dear Mr. Hansen:
I have been discussing the use of submarine cable for
subt ransm Iss I on of the Akutan Hydro Project and I rea 1 I zed that
you may not have knowledge of my experience In this field.
While working for the Corps of Engineers on hydropower, I was
assigned to work In the electric transmission section (because I
had a bent for electrical systems). I worked on prel lmlnary
layouts, and estimates for the Rampart Canyon hydro project
transmission design which was composed of HVDC 1 lnes from Rampart
to Washington State and HVAC 1 lnes for the rallbelt. This
Included converter and Inverter stations.
The Snettlsham project
transmission design memo.
project features:
was started
After that
and I worked on the
I des I g ned the f o 1 1 ow I n g
--138kv 2.7 mile Ac cable design and specifications,
personally conducted fathometer and bottom samples on the MV
Acona.
--Designed Powerl lne to dam site from camp.
--DesIgned camp a I rf I e 1 d,
Including airfield 1 lghtlng.
a 11 outside power
--Designed the control system for the hydraul lc gate.
--Thane substation low profile design.
--Thane substation emergency power system.
--Short circuit analysts check of 138kv system.
--Along with Tauno Lappl selected transmission route.
--Selected tower and tower loadings.
1
2735 EAST TUDOR ROAD • SUITE 201 • ANCHORAGE, ALASKA 99507
PHONE (907) 561·1933
systems
polarconsult
Page 2
Mr. Peter Hansen
November 11, 1985
--Sagged entire 1 lne.
--Selected electrical clearances, Insulators, hardware.
--Selected transformer types.
There was a slow down In funding for the project. At this time,
for re 1 I ab 11 It y and aesthetIcs reasons, HVDC was proposed. J
spent 1 1 I 2 months on the Cappe 11 a doIng fathomete r surveys,
making bathothermograph readings and acquiring core samples to
design the D.C. cables. I also made a cost analysis and a series
of reliability calculations for the system. I had a major part
In writing the HVDC design memo.
Since that time, with my partner Tauno Lapp!, I designed and did
the construction management on an electrical system for Cordova,
Alaska, where we plowed In 7 ml les or 21 cl rcult miles of URD
cable across rivers, through swamps from Eyak Lake to a
substation at the airport. The job Included overhead lines and
taps from town to the lake and a 3 -4 mile single phase 1 lne to
residences south west of town.
--I was also Involved In prel lmlnary design of power 1 lne
from Power Creek to Cordova.
After Snettlsham, I left the Corps for APO. One duty at APO was
to review Alyeska's design for control and leak detection on
TAPS. Also power suppl les for remote gate valves.
While with Polarconsult, I have:
--Designed the electrical system for the Kotzebue Wind
System, not put ln.
--Designed electrical (electrical heating and lighting) and
all mechanical systems for the Tyonek Tribal Building.
--Did the electrical study for Nikolski.
--Designed and did construction management on the UG cable
system for Nome AIrport rehab! lltat ton. Also did the same
for Nome City field.
--Selected transformers and metering system for Nome jail.
--And, you are aware of my electrical and control review of
Tanana Waste Heat Project.
have done designs of wiring for buildings
bul lt control circuits for hydraul lc systems.
2
and desIgned
I have been to
and
polarconsult
Page 3
Mr. Peter Hansen
November 11, 1985
submarine cable Installations and to HVDC terminals at the
BPA and BC hydro systems. I have been on a cable laying ship at
Anacortes and at the terminal when CEA laid their first cable.
In fact, I recommended against their use of PE cable.
I have attended cable dielectric school at Purdue and Power
systems analysts at Santa Clara University.
In a nut shell, there are probably not many people In the state
who have my extensive experience with electrical submarine cable
transmission.
I hope this helps In clarifying what might be thought of as a
wild Idea from someone with no actual experience to back It up.
Sincerely yours
~usman
Chief Energy Engineer
Polarconsult Alaska, Inc.
mds
3
polarconsult alaska, inc.
ENGINEERS • ARCHITECTS • ENERGY CONSULT ANTS
November 11, 1985
Alaska Power Authority
334 West 5th Avenue, Second Floor
Anchorage, Alaska 99501
Reference Contract No. CC08-5315
Senior Request No. 3
Akutan Hydro Electric Project
Attention: Mr. Peter Hansen, Rural Systems Engineer
Dear Mr. Hansen
The contract as referenced above has been completed.
Basically the findings, as stated tn the report, are that this
I s:
1) A simple project and construction should be simple and
costs low.
2) There are no serious slope stabll Tty or tsunami problems.
3) The proposed design can be greatly simplified and should
have substantially lower costs than those estimated earl ler.
4) The addition of a load governor can greatly enhance the
value of the project.
It Is recommended that the following be done:
I) Make arrangements to read the stream gage at least once
weekly,
2) prepare a new cost estimate based on the new design,
3) and Install go/no go creep measurement devices.
If the new cost estimates show that the project Is economical and
desirable, then final design on the North site can proceed.
If stream flows appear marginal, then a prel lmtnary design should
be made of the South site across the bay. The design should have
sufficient detail to prepare a definitive cost estimate.
It Is concluded that the North site Is an excellent location, If
the water Is there, and should be able to be constructed for
substantially less money than the amounts estimated earlier.
It Is also concluded that the South site may have a larger power
output and may have approximately equal construction costs.
1
2735 EAST TUDOR ROAD • SUITE 201 • ANCHORAGE, ALASKA 99507
PHONE (907) 561-1933
polarconsult
Page 2
Mr. Peter Hansen
November 11, 1985
Based on observations of many small
would be one of the easiest to
substantial economic benefits.
power sites
bu 11 d and
In Alaska, this
should provide
To support the above findings, recommendations and conclusions,
the report Is enclosed. The report contains 18 pages of text, 13
pages of pictures, results of stream gaging and some layouts and
sketches for concepts.
In summary, this looks 1 Ike an excellent small project with good
long term benefits to Akutan.
Also attached Is a separate letter which gives some of my
qualifications with regard to electric transmission and submarine
cables.
Sincerely yours,
Earle Ausman
Chief Energy Engineer
Polarconsult Alaska, Inc.
mds
Enclosures
(Orlg. and two copies)
2