1 - Alaska Energy Data Inventory

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a Tailwater elevation = 11.4 ft.b Manning's "n" of .012 was used for concrete lined sections.c Manning's "n" of .0347 was used for unlined sections.d All expansions, contractions and bends were considered betweenthe draft tube and the tailrace with the exception of the suddenexpansion that occurs at the junction of the lined and unlined portionsof the draft tube.Bl-24
1.04 HYDRAULIC TRANSIENTSA. Operating Requirements - The Snettisham project serves an isolatedload in Juneau. The Crater Lake unit may at times be handl ing the entireJuneau electrical demand. Such operation requires a plan which has thecapability for rapid load pickup, rapid load rejection, and inherentstability under load changes.B. Need for a Surge Tank - A surge tank is necessary to meet theoperating requirements discussed above. Maximum and minimum water hammere 1 evat ions at the turb i ne wi thout a surge tank are 1,700 ft and 480 ftrespectively, for a 3.5 s wicket gate closing and 5 s opening time.Maximum and minimum water hammer elevations with the selected surge tank\are 1263 ft and 597 ft, respectively (surge tank at sta 65+59). Inaddition, a surge tank would be required as a source of water to fulfillthe function of allowing rapid load pickup. Performance of the systemwithout a surge tank on both load rejection and load acceptance combinedwith the operating requirements discussed in the preceding paragraphindicate that a surge tank is necessary for the Crater Lake project.C. Net Turbine Heads Used for Design. This section describes how thenet heads used to specify the turbine were determined. Calculations of netheads are based on the following equations:KW = Q x Hn x E - 11.8; H = Q2 K.L -'kWCombining these equations yields: ! 0 3 - Hg 0 + 11.8 KW/E = 0 where:= Generator output (kW).o = Turbine discharge (ft 3 /s).Hn = Net Turbine head (ft).E = Plant efficiency.HL = Head loss (ft).K = Friction coefficient.Hg = Gross turbine head (ft) ..B1-25
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. c-o,.oy t:) ~3 J .-7I ~U~~T Snett
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SYNOPSISThe Long Lake - Crater Lake
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LOCATION:SNETTISHAM PROJECT, ALASKA
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Maximum momentary head, ft(during l
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(3) Based on generation of 27.3 MW
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APPENDIX AGEOTECHNICAL DATAAlA2GEOM
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A. "AVERAGE" FAULT CONDITION.GEOMEC
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For the existing conditions the fol
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SUMMARY ."'OGHOLE Nv.N 93 61':' I S
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SUMMARY LOG N 93614 1 ~H~~T3 Of 3HO
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SUMMARY LOG95473H 0 LEN DH 99 9 160
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SUMMARY LOG N 95473 I SWFFT 4 OF 4H
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SUMMARY LOGHOLE NE9361186371Crater
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SUMMARY LOG N 93611 I SHEET 4 OF 4H
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SUMMARY LOGHOLE N DH 101 cont'd9411
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N 93.616 lSME£T 1 OF4SUMMARY LOGHO
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DEPTH OF HOLE9361686380DRILL OATES
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SUMMARY LOG I SHEF:T 1 OF' 4H 0 L E
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SUMMARY LOGHOLE NO.I N 9L271.~9 I S
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SWN\I~ARYLOGH 0 L E NO.DDH-10~I~N=-
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LOGH 0 L E NO. DDH-lO~ HE N;;--,,"9
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SUMMARY LOGHOLE NO.DDH-IO~PROJECT S
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SUM~AR,(LOG\ N ac.~l~ I SHEET 2 OF,
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SU,'t1:--,lARY LOG I N 0)':'1 ,c,.
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SU~AMARYLOGHOLE NO.N 95159. I SHF E
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SUMMARY LOG N 951S9. 1 SHct=:T 4 OF
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SU:\,1:--.4ARY LOGH 0 L E NO.DIJH-1
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LOGHOLE NO. DCii-107 I SUR,rACe: EL
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,S UMMARY .~OG N 93451 r SHEff 1 Qf
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SUMMARY LOGH 0 L-E NO. DDH-I09~NIiI
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_liUMMARY lOG N 93685 1 ~W~F'T 3 OF
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SUMMARY LOGH-O-L E NO.DDH-110N 9354
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$UMMARY I~~GK 93729.8HOLE N . DH-ll
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N 93729.8~UMM~RY Ib~G.. OL;- N . Dh
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HOLEI PROJEC_,- e"WLa,. COIoIP.~ ~F
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,~UMMARY IbOGN Q
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Il,UMMARV ,~~G N 93767.6I OLE N . D
Page 75 and 76: [ ~UMMARY LOG N 93767.6OLE NO. rlH
Page 77 and 78: ~UMMARV I'cfGN q17fi7 fiOLE N DH-1l
Page 79 and 80: SUMMARY .L;PG N 93773. 3 SH~~T 1 OF
Page 81 and 82: SUMMARY ,,,,00N 93773. 3 SM~~T 30F
Page 83 and 84: ~~UMMARY 1'o~GI PAO::C~ ("tee ",.N
Page 85 and 86: ISUMMARY LOGHOLE N . DH-1l4PROJECT
Page 87 and 88: 93731.086934.0PROJ E C TORILL DATES
Page 89 and 90: SUMMARY LOG 93731.0HOLE N . 86934.0
Page 91 and 92: SUMMARY I~OGN 95300.4SHEET 1 Of 7 j
Page 93 and 94: ! SUMMARY.",OG N 95300.4 SH£~T1 Of
Page 95 and 96: SUMMARY LOG- N QC;1nn. 4HOLE NO. DH
Page 97 and 98: SUMMARY I~OG N Q'i1nO.4 SH£~T 7 OF
Page 99 and 100: APPENDIX BlHYDRAULIC DESIGN OF RECO
Page 101 and 102: PARAGRAPHC. Hydraulic Losses in Mac
Page 103 and 104: APPENDIX B1HYDRAULIC DESIGN OF RECO
Page 105 and 106: Various plates which appear in both
Page 107 and 108: C. Power Tunnel. The power tunnel i
Page 109 and 110: The primary and secondary rock trap
Page 111 and 112: G. Gate Structure Transition.(1) Si
Page 113 and 114: quantity of water in the gate struc
Page 115 and 116: will be approximately 12.5 ft and o
Page 117 and 118: Figure 7 in appendix B2 contains a
Page 119 and 120: accompaning cross-sectional areas o
Page 121 and 122: (3) Losses in Steel Penstock - Fric
Page 123 and 124: the type of pipe to be used at Crat
Page 125: unlined tunnel was 0.187 ft. Simila
Page 129 and 130: Representat i ves of HEOB and OCE r
Page 131 and 132: nominal diameter and 27.9 percent f
Page 133 and 134: I. Computer Models.(1) Computer Pro
Page 135 and 136: increase the Polar Moment of Inerti
Page 137 and 138: "WHAMO" was used for the run and re
Page 139 and 140: surge tank (reject condition) is 10
Page 141 and 142: a surge tank approximately 350 ft h
Page 143 and 144: 1.05 LAKE TAPA. Genera 1. The 1 ake
Page 145 and 146: Trashrack ConditionZero clogging25%
Page 147 and 148: plug, approximate sta 10+50 and at
Page 149 and 150: the blast pressure recorded at cell
Page 151 and 152: REFERENCES1. Mattimoc, J. J., Tinne
Page 153 and 154: APPENDIX B2SUPPORTING TECHNICAL DAT
Page 155 and 156: eUN.(Fl.). ,~f···~"'. '"".f1~~_.
Page 157 and 158: '.1":' ..."'..: ..:.........iI\~~fr
Page 159 and 160: COMP .~ > ,;--C H K 0 • ~,-,,,,-\
Page 161 and 162: C OMP. '3N3""CHKD. ___SUBJECTU.S. A
Page 163 and 164: COMP. ;IN:rCHKD. __ _SUBJECTC.IGA T
Page 165 and 166: CaMP. In::;:CHKD. ___ _SUBJECTU.S.
Page 167 and 168: JI~COMPoCHKD. ___SUB~IECTC I( A Te(
Page 169 and 170: ·COMP. :1Nd~, U.S. ARMY ENGINEER D
Page 171 and 172: 'COMPo )N"TCHKD. __ _SUBJECTU.S. AR
Page 173 and 174: COMPoC H KD.:r~:ru.s. ARMY ENGINEER
Page 175 and 176: (C OMP. :r IV 3'CHKD. J .,..1SUBJEC
Page 177 and 178:
C OMP. ::r NS"CHKD.J 101SUBJECT3LiU
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46 13231~ t l TIr!!f I..I' ,;I ' 'j
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COM P. JIv J u . S. ARM YEN GIN E E
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COMP.lf!::C H K D •.::.YuleIDo/L.
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COMPo 0N"S'""CHKD •• J WJ"JU.S.
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U.S. ARMY ENGINEER DISTRICT, ALASKA
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COIo4P.CHKD.U.S. ARMY ENGINEER DIST
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COMPoCHKD.,r., '........,.~S U!:!..
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COMPo ;fA/if "CHKO.-r- u.s. ARMY EN
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COMP.CHkO.U.S. ARMY ENGINEER DISTRI
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COMP.CHKO.SUBJECTU.S. ARMY ENGINEER
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~~=::ySUBJECTU.S. ARMY ENGINEER DIS
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NPA FORM 16Ba (Rev.) Previous editi
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i•COMPo StJ\CHKD. JJSUBJECTZ/ 1?t
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COMPo ,)N)CHKD. 9"~SlIBJECTHU.S. AR
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NPA FORM 168a (Rev.) Previous editi
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"':'\.CO~P.~CHKD.~SUBJECTU.S. ARMY
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~( \lAL..\)~S iC.E\\\M\1'\) (.cc-0s
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-C OMP. \./ t..JCHJ(D._~_t~_"SUBJEC
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___ .___._~ ..-=..........__ ._+-__
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~UIII~::J•o•zo.,'"
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604·· FIUC • e893 FINI65COf41)
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1 CRATER lA
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lZ112Z DISPLAY ALL FINISHla3124 HIS
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S4· rRIC .01S0 FINI~5 COMO 10 C10e
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.DISCHRI2CE. CO£.FFICIGNT vs VALVE
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SA CPLUS .el C~1NUS .el rI~I65 CONO
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1'~,~~TER LAKE. Sl'fETTISHM. HYDRAU
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~!;:t:-~·.; ..'!;'~totoJ)l.14M PIa
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)0.40.5~IT' I" THiI "'lIee C .....
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sf· C· PLOTTIMG REQUESTS&a,1fLO.T
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········· .. ·· .... ·
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.... D.~.~ T.altcTtOtt II TJl II'UI
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'IIEL~CT'ltC6 ()veH .,}{)(L~ue TA ~
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\C'iCfilB1L L.A-1L-l:5'"GU3C-TelG "
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APPENDIX B3HYDRAULIC DESIGN OF ALTE
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The power tunne 1 entrance wi 11 be
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B. Losses in the Power Tunnel.(1) U
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3.04 SURGE TANK.A. Operating Requir
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in the power conduit. Condition E i
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(2) Condition A - Maximum surge for
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I. Stability Routings.To de~onstrat
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3.05 PRESSURE AND SPEED REGULATION.
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Maximum water hammer pressure gradi
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APPENDIX B4HYDRAULIC DESIGN OF ALTE
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4.02 DESCRIPTION OF THE POWER CONDU
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4.04 AIR CHAMBER SURGE TANK.A. Oper
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12-ft diameter power tunnel with a
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Asc = Critical (horizontal) area of
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CRITICAL AIR VOLUMES BASED ON SVEE
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Since the air volume required in th
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The results of the rejection and de
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from these gauges will be converted
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Air 1 eakage through the rock is go
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needed for normal power production
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4.06 PRESSURE AND SPEED REGULATIONA
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4.07 INTERNAL CONDUIT PRESSURESA. G
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hammer values. Water ham~er and spe
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16. U.S. Dept. of Interior, "Design
Page 295 and 296:
'I ,j:' 1 ! .~ .... ; : r :-:; I r
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1. Jistances ~f j,10,~nrl l~ tt h~t
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TABLE IMAXIMUM PRESSURE ANDSPEED RI
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17()D').~~-----; !CSURMSUR(Chaudhry
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5 4 3 21 0occBB-----------Aa..::;VI
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5I 4 I 32DESIGN SURGE TANK DIA. = 1
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D5 I4 I 3 2 1 1THIS TANK IS LESS TH
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5 I4 I 3 2 11---_._---0CRATER LAKE#
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c---54 : 3 2 11D1. SEE PLATE B2 FOR
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5 I 4 3 2 11----0 1. SEE PLATE B2 F
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5 I4 [ 3 2 !1DEUtICRATER LAKE, SNET
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5 l41...j3 2,1r0--£tEV'"1U4S.113e.
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CORPS OF ENGINEERSU. S. ARMY1040 f-
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\ \ /A~1-- I.- -- QUIESCENT' 1 I514
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CORPS OF ENGINEERSU. S. ARMY~'" 00~
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5 4 I 3 I 2 1 II THS TANK IS STABLE
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-DC 9505 I 4 I 3 I 2 1I DESIGN TANK
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APPENDIX CPENSTOCK DESIGNC1C2ANALYS
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e cANALYSIS OF CONFINED PENSTOCKS.
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-Rcdr.op a vertical l:ine to the ab
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liner • Longitudinal members and.
Page 337 and 338:
- ~",/APPENDIX C2STRESS ANALYSIS OF
Page 339 and 340:
.' '", ,_" - _. ' •• :~"~';:',~
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'. ~~'. L1 zmuslbe'es//mCl-led.:" ~
Page 343 and 344:
. ,c'R- II51-2 - 87"LlI -I- ~2 ,; O
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CONCRFTEDEFORMATION...--'Ir---Difre
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srra/n,- ....Bdt"sp/ac6'mel7tDC-r ,
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- . .
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7. E: ..':·"·tillTCES~ .Wa.ter Po
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