Electrical Power for Valdez and the Copper River Basin-1981

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Table 1 VAllison Creek -Discharge MeasurementsDate9-01-501-23-742-12-742-23-74.1-15~74[j-09-74!,-2J-7!,11-18-7412-17-7LI1-25-752-07-752.-19-753-06-753-07-753-13-753--17-753-:1.0-753--2b-/'l11-] 1-75Ij -l7-})1,-24-751,-25-755-01-756-05-756-12-75L,-01-76Ij-02-76L,-03-764-04-764--05-764-06-764-07-764-08-764-09-764-10-764-11-764-12-761.-13-764-14-764-15-76Flow in cubic feetper second (c.f.s.)54.911. 915.27.610.913.212.920.420.27.27.710.35.156.75.13.9611. 76.07.010.04.65.15.885.080.03.94.24. 74.94.64.53.83.93.94.75.14.45.54.51,.2D3ta collE:'ctL'd by:U.S. Geological SurveyNurthwest Hydraulic Consultants, Ltd.JFI·JAT, George PerkinsFluor Alaska, Inc.17
occur, and may allow the rock to blend in with the surroundings. within several years. Blasting for tunnel construction couldtemporarily disturb resident wildlife. The above ground portion ofthe penstock will be a permanent scar on the hillside.Increased erosion and subsequent stream sedimentation may resultfrom cleared areas. The extent of this occurrence will be directlyrelated to construction techniques and can be avoided. Adverseimpacts which can occur to aquatic species as a result of siltationare numerous and well documented. Major impacts from siltation, as aresult of construction of the proposed project, include decreasedvigor or death of incubating salmon eggs by interfering with orpreventing respiration, loss of spawning gravels, and physicaldisturbance to both adult salmon and other resident species.Clearing of approximately 21.5 acres of vegetation would be requiredfor the transmission line. Visual impact would be significant.Clearing and construction activities could disturb nesting eagleswhich may result in desertion of eggs and young. Bird collisions·with power lines will result in mortality. Transmission poles couldbe the tallest object in the immediate vicinity and may commonly beused by raptors as a perch. Improper line spacing presents thehazard of electrocution to large raptors.Construction activities will disturb terrestrial wildlife and maycause avoidance of the area while construction is occuring. Thisimpact should be minor as no wildlife concentrations or criticalhabitat areas are known to occur in the immediate area.To prevent debris from reaching the turbines, construction of ascreen over the penstock intake at the lake will be necessary andcould require lake drawdown to the lake tap inlet. This will result·in dewatering the upper reaches of Allison Creek. If discharge didnot occur directly to Port Valdez or occur in a carefully controlledmanner it could create excessive discharge into the lower stream;possible scouring of the streambed; and depending when this occurred,above normal stream velocities could either prevent returning adultsfrom entering the stream or expose incubating eggs. Also, residentDolly Varden could be flushed out of the system to marine waters.Operation and Maintenance: During project operation, the lake levelwould be drawn down as much as 100 feet, primarily over the wintermonths. Biological impacts to the lake resulting from this drawdownwould probably be minor, although the aesthetic impact would besignificant. Fortunately, the lake itself is not visible from thetown of Valdez. Fluctuating lake levels could cause lake shoreerosion leading to landslides in steeper areas with accompanyinghabitat degradation. During winter, shelf ice formed by thedropping lake level could impede movement of mountain goats. Thelow number of goats in the area reduces the extent of this occurrence.The impacts which would result from project operation have thegreatest potential for adversely affecting the environment ofAllison Creek. The drawdown would dewater Allison Creek at its
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E---~for-~-~and the Copper River B-
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SYLLABUSThe geographic area conside
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SOUTHCENTRAL RAILBELT AREA. ALASKAI
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INTRODUCTIONDue to continued growth
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The city of Valdez conducted enviro
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FIGURE I:HYDROPOWER STUDY AREAFOR V
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oard feet of hardwoods, half of whi
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VALDEZ
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ALYESKA PIPELINE TERMINAL
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Other Activities:Nonseasonal stable
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Table 3Historical Population of Val
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Transportation and Tourism:Detailed
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The following tables show the futur
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framework of the study authority an
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Nucl ear:Nuclear energy development
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lntertie:With the deciSlon by the C
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If the powerhouse were moved to jus
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CONSERVATION:Description:THE NONSTR
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TRANSMISSION INTERTIEDescription_:T
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impaired. As a result, standoy gene
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ALLISON LAKE
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From the time of pO\'Ier-on-line, o
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Technical services such as electron
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175150FIGURE: 2ENERGY DEMAND - REVI
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175150FIGURE: 4ENERGY - REVISED APA
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SYSTEMOF ACCOUNTSAccountsPlan AAll
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AccountsPlan A.All Diesel Generatio
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then be determined for the 100-year
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Comnents received from the city of
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FINALENVIRONMENTAL IMPACT STATEMENT
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LIST OF PRFPARERSNameExpert i seExp
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COMPARATIVE IMPACTS OF ALTERNATIVES
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AREAS OF CONTROVERSYTo date no spec
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COVER SHEETLIST OF PREPARERSFINAL E
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A. NEED FOR AND OBJECTIVES OF ACTIO
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alternative has been estimated to p
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slopes surrounding Allisorl Lake ar
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weir to the mouth, with the majorit
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expected to Allison Creek below All
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2. Biologicala. Vegetation:,r-.Hydr
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Waterfowl and water related birds f
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within the local community. The imp
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Cumulative impacts to the Port Vald
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Program-related issues. The Alaska
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13.10INDEXSubjectsAffected Environm
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APPENDIX AHYDROLOGYTABLE OF CONTENT
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snowfields and glacier areas on the
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AVERAGE MONTHLY PRECIPITATION(inche
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gages at Lowe River near Valdez, Lo
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were estimated based on Tonsina Riv
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'fUR r)c r ,-. n:c JA~ FEEl "'A~ AP
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--..,I-J--. -,-- - ----- - --TONS I
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ALLISON CREEKESTIMATED STREAMFLOW -
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APPENDIX BEXISTING SYSTEM ANDFUTURE
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IIHf{ODUCTIONThis section is devote
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FIGURE: B-1PRICE INCREASES OF DIESE
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Installed Generat.or Peak Energy fo
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90008000700060005000- 4000 ~..-:300
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Table 4VALDEZ-GLENNALLEN AREA UTILI
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As footnoted, the Alaska Power Admi
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201510CDI5.: ...:.T. .' !', ~. '.,
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SOLOMON HY I.IICU'-__'lOUIE 1-7 MlN
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, .. ,·.AYI.AG! fOWl. DlMANO WHit,
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The following is an excerpt from th
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Power Requirement Study (excerpt)GL
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APPENDIX CECONOMIC EVALUATION
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INTRODUCTIONThe purpose of this sec
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value of 66.92 mills/kWh. This figu
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FIGURE C-2: SOLOMON GULCH ALLISON L
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Er.Jployment Benefits Computation (
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energy would be fully utilized. As
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ECONOMIC EVALUATION OF HYDROPONER M
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ECONOMIC EV~LUATION OF HYDROPO~ER M
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------~-~ECONO~IC EVALUATION OF HYD
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ECONOMIC EVALUATION OF HYDROPO~ER M
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ECONO~IC EVALUATION OF HYDROPOwER M
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APPENDI X DPROJECT DESCRIPTION AND
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POWERHOUSETypeTRANSMISSION LINEVolt
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POWERHOUSETypeTRANSMISSION LINEVolt
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VALDEZ HYDROELECTRIC POWER PROJECTG
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turbine. The penstock would bifurca
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TABLE D-lSUMMARY COST ESTIMATEOCTOB
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TABLE 0-3DETAILED COST ESTIMATEVALD
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TABLE D- 3 (cont)Cost Unit Tota 1Ac
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TABL E D-4DETAILED COST ESTIMATEVAL
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TABLE D-4 (cont)Co st Unit Tota 1Ac
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, ..... ,..\ (I),;> "----f .'-.. -I
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"'~~TAPANDROCK TRAP1600.•. -~ "00
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CORPS OF ENGINEERSU. S. ARMY./f----
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APPENDIX EENVIRONMENTAL DATA
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TABLE 1ATEMPERATURE RECORDING OF AL
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TABLE 1A (cont)ALL! SON CREEK (cont
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TABLE 1A (cont)ALLISON CREEK (cont)
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ALLISON CREEK (cont)FEBRUARY HIGH L
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ALLISON CREEK (cant)TABLE lA (cant)
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TABLE 1A (cont)ALLISON CREEK (cont)
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TABLE 1A (cont)SOLOMON CREEK - HIGH
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TABLE 1A (cant)SOLOMON CREEK (cant)
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TABLE 1A (cont)SOLOMON CREEK (cont)
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TABLE lA (cont)SOLOMON CREEK (cont)
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TABLE 1A (cont)SOLOMON CREEK (cont)
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SOLOMON CREEK (cont)TABLE 1A (cont)
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TABLE 2ACalculated Flows of Allison
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TABLE 2BCalculated Flows of Allison
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TABLE 4AWater Quality Data of Allis
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TABLE 4A (cont)PARAMETERCalciumMagn
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TABLE 4A (cont)PARAMETERTurb i d it
Page 216 and 217: TABLE 4A (cont)PARAMETERTurb i d it
Page 218 and 219: TABLE 4BALLISON LAKEWA TER QUALI TV
Page 220 and 221: TABLE 6BIRDS OF THE PORT VALDEZ ARE
Page 222 and 223: Oregon JuncoTree SparrowWhite-crown
Page 224 and 225: UNITED STf-lrESDEPARTMENT OF THE IN
Page 226 and 227: c. Effects on Benthos: The proposed
Page 228 and 229: An ecological evalu~)tion as requir
Page 230 and 231: JAY S. HAMMO~D. GOVERNORDEPARTMENr
Page 232 and 233: CULTURAL RESOURCESAboriginal Settin
Page 234 and 235: shorp--probablv to facilitate easie
Page 236 and 237: Today the Alyeska oil terminal enco
Page 238 and 239: APPENDIX GFOUNDATIONS AND MATERIALS
Page 240 and 241: 100 psi pressure at depth. The sour
Page 242 and 243: -1'~~ ·/~-IU-'J\·-----'~r-.-;-,~
Page 244 and 245: ~UMi'.'j~'~Y!lfGIOL~ N ..--Pa.w'rln
Page 246 and 247: ; ;; Ii; Z II;;; II til, ;;; : i;;
Page 248 and 249: Valdez InterimSouthcentral Railbelt
Page 250 and 251: LIST OF FIGURES AND TABLESPageFigur
Page 252 and 253: -----------------------------------
Page 254 and 255: -~~ ~..rt~i~;Valdez Interim ReportS
Page 256 and 257: alder, salmonberry, blueberry, and
Page 258 and 259: Table IIPrince William Sound Salmon
Page 260 and 261: 3/ 4/ 5/- - -1976 Average weights b
Page 262 and 263: the number of pink salmon counted i
Page 264 and 265: in the fall at the upper end of the
Page 268 and 269: outlet from the lake; however, the
Page 270 and 271: As stated previously, two alternati
Page 272 and 273: Discharge measurements are sparse a
Page 274 and 275: Streambed sedimentation can be caus
Page 276 and 277: 8. That during the construction pha
Page 278 and 279: LITERATURE CITEDBailey, Jack E., an
Page 280 and 281: Sharp-shinned hawk - Accipiter stri
Page 282 and 283: Allison ereekTemperature DataDateTe
Page 284 and 285: ALLISON CREEKSeptember 1979 . Octob
Page 286 and 287: ALLISON CREEKDecember 1979 Januarl
Page 288 and 289: SOLOMON. CREEKSeEtember 1979 Octobe
Page 290 and 291: 7. That clearing for the penstock c
Page 292 and 293: 22. That a cooperative study of the
Page 294 and 295: APPENDIX IMARKETABILITY REPORT
Page 296 and 297: Department Of EnergyAlaska Power Ad
Page 298 and 299: Valdez/Glennallen Power Market Anal
Page 300 and 301: List of·Tab1esTableIII-1IV-1IV-2V-
Page 302 and 303: Valdez/Glennallen Power Market Anal
Page 304 and 305: CHAPTER IISUMMARYValdez and Glennal
Page 306 and 307: A. Assuming Allison Creek follows S
Page 308 and 309: CHAPTER IIIPOWER MARKET DESCRIPTION
Page 310 and 311: increases. Municipal construction h
Page 312 and 313: CHAPTER IVEXISTING POWER SYSTEMSSys
Page 314 and 315: TABLE IV-1HISTORICAL LOADS--VALDEZ
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Load FactorsThe following chart lis
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CHAPTER VFUTURE POWER AND ENERGY AS
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Table V-IVALDEZ/GLENNALLEN AREA UTI
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Table V-2INSTALLED CAPACITY REQUIRE
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CHAPTER VI .ALTERNATIVE GENERATION
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Biomass-FiredAlthough of many forms
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A Solomon Gulch article in the Dece
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Net EnergyThis section discusses th
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Table VII-2Valdez/Glennallen Foreca
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40VALDEZ/GLENNALLENCAPACITY/RESOURC
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150Figure VII-3140VALDEZ/GLENNALLEN
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150·Figure VII-5140VALDEZ/GLENNALL
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TABLE VIII-IASummary Cost EstimateO
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TABLE VIII-2Summary Cost EstimatePr
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Table VIII-3AAverage Rate Determina
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Table VIII-4CVEA Diesel Generation
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Table VIII-5Average Rate Comparison
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Table VIII-6Average Rate Determinat
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Table VIII-8Average Rate Determinat
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Table VIII-IOAverage Rate Determina
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----~------T'lble VIII-J 1Average R
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CHAPTER IXBIBLIOGRAPHY1. Power Cost
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: I,B'III Ii ::1: iii,APPENDIX JPUB
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Recipents of Valdez Draft Interim f
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u. s. ENVIRONMENTAL PROTECTION AGEN
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25. ~e str?ngly recOTmend that an a
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UNITED STATES DEPARTMENT OF CO!'!ME
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3. have adequate flows for flushing
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Cnitc:d Srat6 [)c'~,artmcnt of the:
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AdvisoryCouncil OnHistoricPreservat
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Corps Of Engineers - 2 -11/4/80Than
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-2-'2. Most of the State 1 and enco
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-~-The SCH has no objection to this
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ALASKA POWER AUTHORITY333 WEST 4th
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Electrical Power for Valdez and the Copper River Basin-1981

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