NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on:...
Transcript of NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on:...
![Page 1: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/1.jpg)
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SUS ITNA. HYDROELECTRIC PROJECT
EXTERN1~L REV I 1:W BOARD
f~EETING
NOVEMBER 18-19) 1982
Acres American Incorporated 1000 Liberty Bank Building Main at Court Buffalo; New York 14202 Telephone (716) 853-7525
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I I I I I I I I I I I I I I I •• I I I
SUSITNA HYDROELECTRIC PROJECT
EXTERNAL REVIEW BOARD
MEETING
NOVEMBER 18-19) 1982
ACRES AMERICAN INCORPORATED 1000 Liberty Bank Building Main at Court Buffalo, New York 14202 Telephone (716) 853-7525
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I I I •• I I I I I I I I I I I I I I I
..
Q
Attendance:
Time & Locati·on:
09:00 09:10 09:20 09:40 10:15 10:30
11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G
PROPOSED AGENDA
SUSITNA HYDROELECTRIC PROJECT
EXTERNAL REVIEW BOARD
Dr. Ralph Peck Dr. Andrew Merritt Dr. Harry Seed
18-19 November., 1982 Anchorage
APA - Introduction Acres - Introduction Scope of Summer Program Geology of Watana Relict Channel Coffee Break . Material Properties of Watana Relict
Channel Borrow Area D Fog Lakes Relict Channel Lunch
· Dams i te Geo 1 ogy , Upstream & Downstream Porta 1 s
Scope of Winter/Summer Programs Rockfill Concrete faced Dam Discussion Wrap-up Summary of Board's Ccrnments
D. Wozniak c. Debelius s. Thompson s. Thompson
D. W. Lamb D. W. Lamb s. Thompson
s .. Thompson s. Thompson, s. Thompson D. W. Lamb
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- SCOPE SUMMER PROGRAM
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I I I I .I I I I I I I I I I I I •• I I
DAMSITE
OBJECTIVE OF
82 SUMMER PROGRM~
WATANA RELICT CHANNEL
BORROW AREA D
FOG LAKES RELICT CHANNEL
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I •• I I I I I I I I I I I I I I I I I
DAMSITE
EXTENDED GEO LOG I C ~1APP I NG
CONFI~l & REFINE GEOLOGIC INTERPRETATION
DETERMINE ROCK CONDITIONS & OVERBURDEN DEPTH BENEATH PROPOSED MAJOR CIVIL STRUCTURES
•
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I I I I •• I I I I I I I I I I I I I I
BORROW AREA D
DEFINE STRATIGRAPHY & EXTENT OF IDENTIFIED UNITS
DEFINE GEOHYDROLOGY & PERMAFROST
MATERIAL PROPERTIES
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- GEOLOGY OF WATANA RELICT CHANNEL
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I I I I I' I I I I I I I I •• I I I I I
"'
WATANA RELICT CHANNEL
DEFINE STRATIGRAPHY IN UPPER 200 FEET
FURTHER DEFINE CHANNEL GEOMETRY
DEFINE MATERIAL PROPERTIES
DEFINE GEOHYDROLOGY
DEFINE PERMAFROST CONDITIONS
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I I I I I I I I .
I I I I I I I I I I I
FOG LAKES RELICT CHANNEL
- DEFiNE CHANNEL GEOMETRY
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I I I I I. I I I I I I I I
-· I I I. I I
SCOPE OF 82-SUMMER PROGRAM
DRILLING - 16 BOREHOLES IN BORROW AREA D/RELICT CHANNEL
SEIS~1IC REFRACTION SURVEY
- 22.,000 LF-DAM SITE - 16.,000 LF-BORRO\v AREA D/RELICT CHANNEL - 45.,000 LF-FOG LAKES
GEOLOGIC i~APPING - DAM SITE
~LOCAL
REGIONAL - BORROW SITE
D
E
·. I
LABORATORY TESTING - ATTERBERG LIMITS - GRADATIONS - HYDRO~iETERS
- MOISTURE CONTENTS - PROCTORS
![Page 12: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/12.jpg)
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I I I •• I I I I I I I I I I. I I I I I
WATANA RELICT CHANNEL CONCERNS
POTENTIAL RESERVOIR LEAKAGE
POTENTIAL PIPING
POTENTIAL LIQUEFACTION
POTENTIAL SETTLEMENT DUE TO SATURATION AND PERMAFROST THAWING
..
![Page 15: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/15.jpg)
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I I I. I I I; I I I I I I I I I I I. I I
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STRATIGRAPHIC COLUMN WATANA RELICT CHANNEL AND
BORROW SITE 0 AREA
TYPE EVENT
SURFICIAL DEPOSITS· EROSION a FROST HEAVING
ICE OQSINTEGRATION ABLATION a MELTING ADVANCE
ALLUVIUM l~ERGLActA~ ___ _/' .--~--.--
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GLACIOLACUSTRINE a WATERLAIN TILL LAKES a FLOATING ICE
- - - ---BASAL MEl.TlN'S-~ BASAL TILL. ADVANCE
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RETREAT READVANJCE
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G) TILL ADVANCE
® ALLUVIUM FLOWING WATEn
8 BEDROCK
COLUMN
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-------------------RELICT CHANNEL X-SECTION
2300 Sl-SW-3 W Sl80-7
AH-19 W 2240 DR-22
. 2180
AH-20 a.;A/8
2120 c
2060
2000
BR·SL
J
1940
1880 K K
1820
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- -----------------
2250
AH-26
22.00
2140
2020
1960
BR-Sl
1900
1840
1780
1720
1660
RELICT CHANNEL X-SECTION
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22!50
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irl 1890
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RELICT CHANNEL .X- SECTION
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-- -·
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![Page 20: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/20.jpg)
-
BORROW 'D' X- SECTIONS
2400
c 2340
2280 F
2220 G
2160
--- -;rl~----------~~~-------2100 o•
2040
1980
1920 ~~----~----~----~~----~----L-----~----~----~-----L~---L----~----~~--~~ 2400 3200 4000 4800 5600 6400 1200 aooo· aaoo ssoo 10400
0 800 1600
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2220
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2100
2040
1980
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BORROW 'D' X-SECTIONS
....... ' '
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- ------~--~----~--
BORROW 'D' X -SECTIONS
2400
DR-14 2.!40
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D 2280 //~~~--~----- AH~I~
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2220
2160
2100
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1980~~----~~--~~----~~~A-----~----~----~----~~----~----~----~----------~ 5400 6000 6600 7200 7800 2400 !000 5600 4200 4800 0 600 1200 1800
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- MATERIAL PROPERTIES - RELICT CHANNEL
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I I I I I I
' I I I I I I I I I 1: I
TEST PITS AUGER HOLES ROT PRY/CORE
BORINGS
COE
SUMMARY OF INVESTIGATIONS - WATANA
RELICT CHANNEL & BORROW SITE D
fl.fl. I 1£78..... . . . .. . . ... 1980~81
AAI 1982
14 24
11
2
14 0
29
0
lE
---------------·-------.------------------... ---n.--------------------------------..... -.------------------------, ..... ---... -------------.-----.----------------------
LABOP.P.TORY TESTING
SOU~CE OF .. SAMPLES #. SA~1PLES GRADATIONS ~10lSTURES ATTERBURGS
TEST PITS
ftliGEP. HOLES
ROTAPY/COP.E
BORINGS
TOTAL TO Dfl.TE
51
219
570
840
ACRES AMERICAN INCORPORATED
51
83
416
550
2
. 48
·~al ;..,
441
3
55
. Ll.O J .J
107
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' I I I I I I I
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HATANA BORROW SITE D 8, RELICT CHANNEL
STRATIGRAPHIC UNIT THICKNESS <EST)
RANGE OF THICKNESSES R.C. AVG,
SURFICIPL 0 - 7 FEET 3.5 DISINTEGPATION 0 - 40.5 11.0.5
. ALLUVIUM 0 - 55+ 4.6 LACUSTRINE 0- 38+ 2.·4 BASAL TILL 0 - 79 3.8 OUTWASH 0 - 131 39.9 LACUSTRINE/TILL 0 - 73.5 2?.3 ..
BASAL TILL 0 - 231 17.2 '" .... ,.....
ALLUVIUM 0 - 41 7.4 OUTvlASH/TILL ? 0 - 77 29.2 LPCUSTRINE/STRATIFIED 0- 48 3,6
TILL 0 - 62 20.8 ALLUVIUM 0 - 161 15.6 REDROCK
BORROW"D"AVG.
3.0 12.4 6.2 3.0 . 5.€
47.2 29.5 25.2 lU.O
25.8 10.2 22.4 57.3
NOTE: ALL UNITS EXCEPT ~&B~ C., E/F" AND G HAVE STP.NDARD DEVIATIONS , IN THICKNESS EXCEEDING PVERJlGE UNIT THICKNESS. THIS IS STRONG INDICftTION OF THE V,ARIAEILITY IN liNIT THICKNESS P.ND DISTRIEl!TION.
. ACRES AMERICAN INCORPORATED
![Page 26: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/26.jpg)
[
r I ('
I .
, Q
~
t t [ Jr. If
f1 h
- BORROW AREA D
![Page 27: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/27.jpg)
I I I I I I I I
' I I II FEASIBILITY REPORT
I ORIGINAL EsnmTE
I I I I I I
WATANA
BORROW SITED
ARfA - 1075 ACRES <ARBITRARY DEFINED LUUT)
UNIT AVG I THICKNESS EST. voLur'E
AlB 3 5 c ]2 21 D 6 20 n·' 3 5 f4 6 10 ElF 47 82
-77 133
75 125
125 220
![Page 28: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/28.jpg)
.
---~--~~--------- --
US. Standard Sltvt Optnlngt In lnchu U.S.Siondard SIIYI Numbtra Hrdromtttr
100 -- 12 9 s 3 2 li/2 I 3/4 1/2 3/8 4 10 20 40 eo 100 1-40 :zoo 270 : -· 0 -~ 'I l"f 11 ,._ ~ [T I' I ¥ I I jl
f.,._.,
~ ..... ~ .
90 La i--t--,
t'. I" 10 1'- r--... t-...... -
i I' ~ •, ~ 80 "t- .. -...... ~ ""'
20
";" :--r....... ~ "-r--70 -.;,;,;.. i-- i• ~~ r--1' 30 -.s::. r-.. ~ -Oo
z::: """' I' ' ~
ca Q) . ~ '- • -~ 60
~ 1'- " 40 ~
>. '- ' >... .Q • .............,
' " ,G
... i'.. ... Q) 50 50 • c • r....
' ~ "' • ·- ~ LL -·-- 0
-' • !'... ~~ ' 0 0 c:
40 !-... tJ
~ 60 -u t'- c: ... &l Cl
"" u
a. ' ...
30 .,
r'-r-. "' 70 a.
-- ['.
20 ' ..... "-" "' 80 ~
........ !-...... 10 -... 90
Otaoo ~00 100 ro D & I 0.15 Ql 0.05 0.01 0~ 0001100
GRAIN SIZE IN MILLIMETERS
BO.U..OERS COBBLES GRAVEL SAND FINES
I Coarse I Fine Coarse Medium Fine Silt Sizes C~ Sizes
• LAB TEST NO. BORING NO. SAMPLE NO. DEPTH CURVE SYMBOL CLASSIF&CATION SUSITNA HYDROELECTRIC PROJECT
IV82 8v/f Sa.,~ ~~u (~) ALASKA POWER AUTHORITY I
. WATANA BORROW SITE D 0
AND RELICT CHANNEL
UNIT c I
GRADATION ANALYSIS CURVES ~-:-_---- --~ ACRES AMERICAN INCORPORATED .
![Page 29: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/29.jpg)
----~-------·--~---.
US. Slal\dard Sltvt O~lnga m tnchu U.S. Standard SliYt Numbora Hydra meter
tOO ~.-- -- 12 9 6 3 2 11'2 I 3/4 1/2 3/8 4 10 20 40 ao 100 140 200 270 . I I II ~ I II I II fT II I t I I II 0
- .
90 .. - > ~ ---. K)
~ r--r--. 80 :-- P- - 20 r- r---
""' 70 ~""-... - K 30 s::. -01
.c
r-r.f# Ol
OJ • ~ 60 ""'""'- «> ~ ,.. >. .0 ..a ~ ... OJ 50 50 ~ c .. ·- ... u. 0
0 ..... c u OJ «> = 60 -u c ~ ., = - ·- u Q. .....
30 .,
70 Q.
20 80 .
10 90
01000 500 100 :0 D 6 I 0.0 Ql 0.05 0.01 0005 QOOllOO GRAIN SIZE IN MILLIMETERS
BOU..DERS COBBLES GRAVEL I SAND FINES
Coarse -~ Fine lcoorse Medium Fine Silt Sizes Clo1 Sizes .
• LAB TEST NO. BORING NO. SAMPLE NO. DEPTH CURVE SYMBOL CLASSIFICATION SUSITNA HYDROELECTRIC PROJECT
15u/ h (I) WBZ.- ALASKA POWER AUTHORITY
WATANA BORROW SlTE D AND RELICT CHANNEL
UNIT D' -
GRADATION ANALYSIS CURVES ~REs AMERiCANiNc"'ORPoRATED
![Page 30: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/30.jpg)
------------~------
~
US. SlcMord Sieve Opening• In lnchu U.S.Standord Situ Numbtn Hydrom&ler
100 - - -- 12 9 6 3 2 11/2 I 3/4 1/2 3/8 4 10 20 40 10 100 t40 200 270 -1- I ,. I r ,. I" I 1' "f ~ II 0
~ --~ ' 90 \
' .......... ~ I'
10 r--.
" ....
~'--~ 80 20
" ~ 70 ' ~
30 - ....... !' r--....._ -£! :-, &: 00 ,, r-... c. CD .............. 4 •• 3:60
.... ~ -............ 40 ~ .,., ~ .Q
i' 'lloo::,. 4
'- i'o... ~ ... ID 50 50 • c: ......,
~ ..... ........ " - .....
u. r-.... 0
""' " 0 - ~ u c:
" 40 "":--. ""-- .....
60 -u c: ... • ., ' : 11 u
Q.. ... ......... Ill
30 70 Q..
~ n
20 ~ 80 ...... :--,... ... r- r--;
10 ......... 90 ..........
I ~ ,u._ -
otOOO eoo 100 50 D & I 0.& Ql 0.0~ 0.01 0~ QOOIIOO GRAIN SIZE IN MILLIMETERS
BOLl.OERS COBBLES I GRAVEL I SAND FINES
I Coarse I Fine !Coarse Medium Fine Silt Sizes Ct\l,'f Sizes
[ii] LAB TEST NO. BORING NO. SAMPLE NO. DEPTH CURVE SYMBOL CLASSIFICATION SUSITNA HYDROELECTRIC PROJECT
w"z.- (3lll..k (/D) ALASKA POWER AUTHORITY
WATANA BORROW SITE D AND RELICT CHANNEL
UNIT E/F '
GRADATION ANALYSIS CURVES AcREs AMErucANlNCORPORATED 'C
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-------------------..
. US. Standard Sieve Openings In lnchn U.S.Stondord Sltwt Numhr1 H~dromtter
100 12 9 6 3 2 .11/2 I 3/4 1/2. 3/8 4 10 20 40. 10 100 140 200 270 ' I'
._ ~ • I' I' I I I I I r-.... i
0 ~ ~ ., . ._r-
!-r- r-. " 90 ...._ 10 r-- I& I' -
\ :- r--. r-. r-. 80 ~ ........
20
I I 1'.
~~ t--~ ..
70 ~ I 30 .... -z: s: 0 ...., -. Cll
II !t'r-r-- • 5:60 !'---40 .~ r"' t"-
>. i-- r- >-. .Q
--~ .Q
'- ~ Q) 50 50 • c ~ t--r-- • u: ... t--.. 0
r-- c - " 0 c 40 60 tJ ........... -u c:
t.. " • II
.. ~ u ~ Q.. w
30 . 70 Q..
f" ... 20 so
10 90
01000 ~00 100 ro . I) 6 I 0.15 Ql 0.015 0.01 OJ.X>5 oooa100 GRAIN SIZE IN MILLIMETERS
COBBLES GRAVEL SAND FINES
OOU..DERS Coarse I Fine Coarse Medium Fine Silt Sizes ~~Sizes
• LAB TEST NO. BORING NO. SAMPLE NO. DEPTH CURVE SYMBOL CLASSIFICATION SUSITNA HYDROELECTRIC PROJECT
Olr !s ( /8) ALASKA POWER AUTHORtTY
WATANA BORROW SITE 0 .. -··-
AND RELICT CHANNEL
UNIT G
GRADATION ANALYSIS CURVES 'AcREs' AMEmcANINCORPORATEo .
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------------------··--.
llS, Standard Steve 0!*'111gl In lnchu U.S. Standard Sieve Numbers H,dromelsr
100 ~ ~
12 9 6 3 2 11/2 I 3/4 1/2 3/8 4 10 20 40 80 100 140 200 270
'i'-I l ,. ~-..!_~-~ I 11 I I I I I' 0
........
" -I'"!"-- ... -•!"--
90 -M. ~ --:..... ......... -'-.... 0
,. 10 t-.. I'-
"~ ""'--- -!-----80
""' :-r- r!.. ~ 20
- -"r-. ............... ........... :Y
70 i' ......__ 30 - ~ .c .. -.c co
'" ...... 01
II) b... -...1!. • ~60
';;......... !'...... 40 3t ,.. :>. .Q
, .. ------~ ~ .Q
... ... II) 50 50 • c: -.f... ....
:"-:-. .. ·- r- '-u. .. Q
........ r-........... tt - ' 0 c
w 40 ~r-. 60 -u c:
t.. .... (ol 4l I' I
u a. r.. -.. 30
''-... 70 0..
20 ~ 80 "
10 90
01000 500 100 eo 0 15 , I o.s Ql 0.05 0.01 0005 QOOIIOO GRAIN SIZE IN MILUMETERS
BOU..OERS COBBLES I GRAVEL SAND FINES
I Coarse I Fine Coarse Medium Fine Silt Sizes ~Sizes
• LAB TEST NO. BORING NO. SAMPLE NO. DEPTH CURVE SYMBOL CLASSIFICATION SUSITNA HYDROELECTRIC PROJECT
Bdlk ( /O) W$7..- ALASKA POWER AUTHORITY
. WATANA BORROW SITE D
AND RELICT CHANNEL
UNIT G'
GRADATION ANALYSIS CURVES 'ACRE'S AiEmcANINCOR'PORiTE'D
![Page 33: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/33.jpg)
-----------...------ --US. Standar4 Slave Oponlngt In Inch" U.S. Standard Slnt Numbtr a Hydrometer
100 - .---- 12 9 A, 3 2 11/2 I 3/4 1/2 3/8 .. 10 20 40 10 100 140 200 270 I ... .,; 0 ----..;::r-- :-rtt
I • -........ '"- ~ --- - .......
1--:--~ 9-... :'II~
r--~ ~ . 90 r--,.11
~ -~ ,.. r-- I'-rT"oo.
i"- "" 10
r--..... \ '\ !1"' i'-- /
~ ' 80 .......... 20 \ ~ fl.~
~, ~ .......
"""" 70 r-
30 ' .... , - ~ ' 1'- -.c J.: Clo
0 0 Q) ..........
I'.. ['-,. ~ • ~60 ......... !'\.~ 40 :l >. ......... ~ .Q
"" " ~~ r-...,._
\... ~ Cl) "50 00 • c: r•...., ~ ............. i"'t--. • ·- '-
LL ' 0
'!'>... -"" ..... 0 - ' u c:
40 -«< -' ~"-'l 60 -u ~ !:)
.......
' c: ... • 11.1
' I'... u
Q.
' ..
....... • 30
' ' 10 Q.
' 1'--.. .,
20 ~ ~ 80 "'!ooo .......... 1'..., .... .......
10 1-oo..,
r--- '90 r---..
01000 ..
QOOIIOO . -
~00 100 ro [) 5 I o.a Ql 0.0!5 0.01 0005 GRAIN SIZE IN MILLIMETERS
BOU.DERS COBBLES I GRAVEL J SAND I FINES
I Coarse I Fine !Coarse Medium Fine l Silt Sizes C~Sizes
• LAB TEST NO. BORING NO. SAMPLE NO. DEPTH CURVE SYMBOL CLASSIFICATION SUSITNA HYDROELECTRIC PROJECT
II? 's X ALASKA POWER AUTHORITY - ri 's 0
' WATANA BORROW SITE D .. AND RELICT CHANNEL
/ILL CoE TPJ/IP 0/177)
GRADATION ANALYSIS CURVES 7cREi AMERtCANlNCoRPORATED
![Page 34: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/34.jpg)
I I I I I I I I I I I I I I I I I I I
UNIT c
D
D'
M
E/F
G
G'
H
I
J'
J
..
t' PCINTS We flTT.
64 4
23 5
10 2 ~
37 5
120 33
20 2
6 2
1 0
3 1 0 5 10 15 20 25 3D 35 40 45 50 55 ffi:·
WATER CONTENT {0/o)
NOTE: ·~ = MftXIMUM MATERIAL PASSING 3/4 11 SIEVE
x = MINIMUM l:J = PL (MEAN)
• = W (MEAN) c
Note: Plastic limits are biased towards higher (more plastic) values. Upper limit of moisture contents are extreme, rare cases; well above means.
![Page 35: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/35.jpg)
----------------We-oJ 1\ .
60 . I I I ., T I I I I T I I I I I I . r 1 I I I I l I I I / • I . . . , 1 .• 1 I .I I .L 1 .I • I 'tt I I _1. _I_
!fW PkASTICITY OR Pl:ASTIC OR ''FAT CLAYS - . EA~ CLAYS.~ ~ILTS . 8 SILTS ' . . .
50 -
- CH
J '
'l !.
~ ! .
.
}.
ld
40 ~·
~ . ~
[...;
"" ~ ~~~ "'\ ~ • c
~ 1 ··~ , ?: ~ . -30 . u Ill' i=
~ ~ ~
Q. !.It CL I"
- '-"' ,.. 20 ~
. ,.,.
(11 •.
'-,__ i-f- -I- 14'
~-~ 1.; MH aoH ~r- ~ '
~ - I i...-~--' ~
to ~
10 ~ 1 ....
. .,.. CL
. -~ 1..1
1.!. lJ. ,_, 1...-~ - . 4 I I,..- I ...
X ·-- ceML_ I~ ~ ~ . I l r'l I" ~ ML a OL ·
~~ 1-.T .I :, ~ -. . ML jl!
-0' I I l..t!li'"' I tiP .
J 20 0
10 30 40 50 60 70 ao I LIQUID LIMIT
TEST PERFORMED ON MATERIAL PASSING -o X -+~ NO. 40 SIEVE IN ACCORDANCE WITH ASTM 0423 ·66 Cl972} AND 0424-59 (1971) /JlL {)llJ ITS EsnmATC.O. ' I)IIJIIS <:. -F
--
.
![Page 36: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/36.jpg)
I I I I I .I I I I I I I I I I I I I I
MJifl We
Uh•t E}F s.z"f, _6"'"
145 I I
IJ~~tl.i C '~~ I 1~'1
r _6""
) .!
I I
140 l i I i
-- 135 u 0..
)-.,_ (/) z w 0 I >- I 0::::: 130
I 0 l
,:.'6.4 I -
WATER CONTENT (0/o)
NOTE: :.~~TERIAL PASSING 3/4 .. srEvE
t\STM D '='<;& "'' ETih.a t> C...
MEifiV (Jflf ~ ""c.
Ji .I '/t ..,.o z,,, "lb l l I J
+<Si 2S'.1 '6
i I I I
I I i I i I
Q SA~ PLE W~"--;3.C. P fT 4
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I I I I I I I I I I I I I I I I I I I
--0 c.. ->-1-(/)
z w a
>-0: a
145
135 ·~<\..2. 1---
1:.'3.. ~
132. I S-
134.. r -
!30
l.:l ~-5 125
t-
;111 f./ I MWf U ,.J NAT'JJ2A "
We. 5.J.. ., .. _l .
I
;\'1 f4. y. , ~ &} "'
Nf. Tlh'( .4 L
We..
.rtf
I l 120 2~~---4L__j ______ 6l_~L_~~48d&~~~e~-~~~,o~-L--:12~~--~~~4--~~,6
B.S"
WATER CONTENT (o/o)
UN II E. IF
0 wa'2..-.2. 1'•'l3~.!.c-,'3E,
8 VJ 62.- 3o
E) &J~- 44 'P\T.2.,.
0 wB2.-c:tl
(tCfe i AC..Kt' S. J
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I I I I I I I I I I I I I I I I I I I
145
140
-:; 13~ Cl.
- I 34.0-- - ->-1-CJ)
z w Q
~ 130 Q
1.2.8-1 fi-p.i.3j----
125
x
mlPL u.81o
I
i I
I -------,-•
t
l~l:l-- _j __ ---f
I 2 0 L-----1--L--!..--L.. _ _,__..,__~~---~--:-_..._......_..;,._.-'---..___... ___ __.
2 4 6 7-'f 8 g..;~. 10 12 14
WATER CONTENT (0/o)
'RAtJ~t 6F ALL 'STANDARD
""P'Ro<..:T"o R. R ~tJL.-r~ "BOR.RD.J s tT€' D
/t'Escs
16
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I I I I I· I I I I
I I I I I •• I I I
---(.)
c. ->-t-•. CJ')
z w a
>-0: Q
~:~TE :
145
140
135 13<(1f
130
125
120
I ' 1 1
~···-····
2 4
t'flltJtwu.JtJ tJ4TVfl.#a"w~
~.2. i'.
...__..,
~/;.. TERtAL PASSING 3/4" SIEVE
8
WATER •' ' ' ~J
----------!-----1
I
t ~
iif~~llltlll't\
NICT"Jil.-4"" w. ""·' i' ..
_j_ i ----- t~0 -8
I R "'
oDf''~o fl?-o 4<
f
-~ _,
i
14 16
8 SA \M Pt. e we z.- .2 p •• ~~ 3c. ) 3 t:.
0
A S'"LW\ D 1 s~ Yri e-rn. e c. (r18L AU::~~)
SA 1N1 f'L.. E W80-~o A As HTo T-teo m~l)b b
(.<:tao .tc::.~ £~ )
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•• I I I I I I I I I I I I I I I I I ·I
145
140
-- 135 0 0. ->-J-(/)
z w 0
>- 130 0::: 0
t:li.B
125
120
I
I
I I ' ' I ' i I
I
,I I
-
~HM•~vt\1
NJ.1''1JIZA ,_ we. G. 0 ., •
! l i ~ I , I
1 I l
f '
I I 1 I
1 ' . • .
l I . i .
!
-~
l l I
I
I I f ...
I !
' !
I I •
I ' I
; '
' ' I l I ; . I •
. I
l .
I I
I
-v~
'\ I 1
7 I
i ----- --1----- -- ~+- --I l .
2 4 6 8 '1.5"10
WATER CONTENT (0/ 0 )
'. ""' ~ - ,':.;_ PASS:NG 3/4 II SIEVE
UN 1T ft
! ~ 1 ~ J
~ ;t lj ,, • !
' i
I
i I t
c
I ~ I ' ·--i
l t I
' I ,; i
I ! \
I -- r-- -
' t•
f 12
. ...
--r> (off' sr:.-le.)
I l I
;
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' I
I
~-r--
J
l"f't\1< /#A\ We.
91.1 -;.
14 16
0 SAV~-tPLc we~-~ ?tT s (a...,
I l f
Y'Vl oD 1Ft 'ED PR.oc_. ToR
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I E
n
t t ·~
~
I I
tJU
;.U
u .llJ
:U
·~
·.u
- FOG LAKES RELICT CHANNEL
I .
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··-=-------·------.........._._. __ ..._
-----·---~
I I
I
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I .
I I .I I I
.
I i
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~ ~ ~ ·,
FOG UKES RELJCT CHANNEL EXPLORAT\ON MAP
-
.. r? ~-
r _:__ ~!
( .•.
< ~ ·,
""' ....
\ ~.~.
\
• I !~ sa&.C
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]f) ' J'
tfi I . l liJ
l t>~
- DAM SITE GEOLOGY
![Page 44: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/44.jpg)
- - .. - - - - .. - - - - - .. 10 • 7
Q
----,..
- .. -
0 D I
c c
• •
liXl -PUT
PLATE 8.1 A
WATf\N.\ VALl,'( l'I'PE Sf'IU.W•\\' 1\tTERNATM:
GENERAL ARnANG£MENT I
I • t • 7 t • • a
![Page 45: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/45.jpg)
- UPSTREAM & DOWNSTREAM PORTAL
J
L
![Page 46: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/46.jpg)
I I I
EXISTING DIVERSION ARRANGEMENT I
' 1, TWO - 38' 0 CONCRETE LINED TUNNELS
I 2. MULTI-LEVEL INTAKES
I EL 1420 EL 1490
I 3 .. LOWER TUNNEL REDUCES WATER LEVEL IN COFFERDAM
I FOR CONSTRUCTION IN STANDING WATER,
I 41 LOWER TUNNEL AT DO~INSTREAM TO BE USED AS TAILRACE
I 5. HIGHER TUNNEL REQUIRED FOR FLOOD ONLY
6. HIGHER TUNNEL USED FOR LOW LEVEL RELEASE - ~1UST
I BE HIGH TO AVOID SILTING
I 7. LOWER TUNNEL IS PRESSURE TUNNEL.
I 8. CLOSURE STRUCTURES REQUIRED TO ENABLE PLUG AND LOW WATER RELEASE TO BE CONSTRUCTED.
I 0
9. LOCATION OF TUNNELS SET BETWEEN COFFERDAM AND
I 1'THE FINS,, STRUCTURE.
I I I
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./,r~~ --------:-.._..c_ _________________ _
SET II
042./85°NW
..
SET :m:
0.
. N
325o/90,
SET :r~
JOINT PLOT UP!-lTREAM PORTAL AREA
w
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I '·
I I I I I I I I I .. I I I I 'I I I I I
. ./
ALTERNATIVE TO LOCATION OF UPSTREAM DIVERSION PORTAL
. .
1. LEAVE AT PRESENT LOCATION
2. LEAVE AT PRESENT LOCATION WITH MODIFICATJONS
3 . LOCATE uPSTREAM OF "THE FINS II
4, LOCATE FURTHER DOWNSTREAM
5. LOCATE ON SOUTH ABUTMENT
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---- ..... _
... , .. / ---=
I Ill
.. ·--·--.. -----·-·· WATANA . DIVERSION TUNNELS
ALTERNATE ALIGNMENTS
![Page 50: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/50.jpg)
I I I I I I I, I I I I I I I I I I I I
LEAVE AT PRESENT LOCATION
ADVANTAGES 1. , EXCAVATED ROCK CAN BE USED IN COFFERDAM
CONSTRUCT ION 2. GOOD HYDRAULIC LOCATION 3, REMOVED FROM ~1AIN CONSTRUCTION AREA·
DISADVANTAGES · 1. REQUIRES 300-FOOT HIGH CUTS
. 2. EXTENSIVE ROCK SUPPORT MAY BE REQUIRED 3. REQUIRES COMPLEX CONSTRUCTION COFFERDAM
ARRANGEMENT 4. DIFFICULT ACCESS PROBLEMS
![Page 51: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/51.jpg)
I I -• I I I I Ia I ,, I I I-I I I I I I
PRESENT POSITION WITH MODIFICATIONS
MODIFICATIONS 1. SEPARATE PORTALS AND STAGGERED CUT FACES 2. MOVE CUT FACES NEARtR TO RIVER 3. REVERSE TUNNELS - MAKING LOWER TUNNEL ON SDUTH SIDE
f~OD IF !CATION #1 ADVANTAGES
- MINIMIZES SIDE ROCK CUTS - INCREASES WORK AREA
DISADVANTAGES - LESS EXCAVATED MATERIAL FOR COFFERDAM
. - INCREASES DIFFICULTY IN ACCESS TO NORTH TUNNEL
MODIFICATION #2 ADVANTAGES
- MINIMIZES ROCK CUTS - IMPROVES CONSTRU£TION SCHEDULE - BETTER CONSTRUCTION ACCESS
DISADVANTAGES . - REQUIRES LARGER CONSTRUCTION COFFERDAf·i AND GREATER
RIVER CONSTRAINTS - LESS EXCAVATED MATERIAL FOR COFFERDAM
MODIFICATION #3 ADVANTAGES
- LESS CONSTRUCTION PROBLEM FOR BOTH PORTALS - REDUCES ROCK CUTS
DISADVANTAGES - REDESIGN OF TAILRACE THAT COULD RESULT IN LOss-oF
ENERGY AND/OR LARGER TAILRACE TUNNELS - CONSTRUCTION PROBLEMS IN DOWNSTREAM PORTAL
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I I I •• I I I I I ·I I I I I I I I I I
PORTAL MOVED UPSTREAM
ADVANTAGES
- PORTAL WOULD BE ON FLATTER SLOPES - REMOVES DIVERSION AS UPSTREAM CONSTRAINT ON DAM - MOVES DIVERSION CONSTRUCTION AWAY FROM MAIN DAM - INCREASED WORK AREA
DISADVANTAGES
- LENGTH OF TUNNEL - LARGER DIAMETER TUNNEL - POTENTIAL POOR GEOLOGY IN PORTAL AREA - REQUIRES EXCAVATION THRU 11THE FINS" - POSSIBLE OVERBURDEN PROBLEM - DIFFICULT ACCESS - POORER TUNNEL ALIGNMENT - IMPACTS CONSTRUCTION SCHEDULE
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..................... --------------------------~~· - - - - .. - - - -· - ... - - - - ,.. - - -UPSTREAM DIVERSION PORTALS ~1AP
PRESENT DIVERSION PLAN
/ /
(
/ ---·-~
--~-\goo--
...... - ~------ --
ALTERNATE DIVERSION PLAN:
• / 0 "10. . . SO FEET
SCALE ! C:77?
![Page 54: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/54.jpg)
I· I
I I I I I I I I
•• I I I I I •• I I I
DOWNSTREAM PORTAL
ADVANTAGES
- BETTER ROCK CUTS - SHORTER TUNNEL - BETTER GEOLOGY - EASIER ACCESS
DISADVANTAGES
- POOR HYDRAULIC ALIGNMENT - INTERFERES WITH COFFERDAM - REQUIRES THAT COFFERDAM COR PART Of) QBE
INCLUDED IN MAIN DAM OR~ REQUIRES FANCY INTAKE DESIGN
- PORTAL ALIGNMENT NOT AS FAVORABLE FOR GEOLOGY - MAY INTERFERE WITH MAIN DAM CONSTRUCTION - MAY REQUIRE UNDERWATER CHANNEL CUT
![Page 55: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/55.jpg)
I I I I I I I I I I I I I I I I I I I
PORTAL ON SOUTH ABUTMENT
ADVANTAGES SEPARATED FROM ALL OTHER CONSTRUCTION ACTIVITIES
.. NO LEAKAGE CONCERN TO UNDERGROUND STRUCTURES - RELIEVES D/S PORTAL AND DOWNSTREAM COFFERDAM
CONJESTION
DISADVANTAGES - LONG TUNNEL - POOR GEOLOGY - POTENTIAL PERMAFROST - ACCESS REQUIRES BRIDGE
IMPACTS CONSTRUCTION SCHEDULE - LARGE ROCK CUTS AT U/S PORTAL - POOR HYDRAULICS - POTENTIAL IMPACT WITH COFFERDAM CONSTRUCTION - REQUIRES ADDITIONAL TAILRACE TUNNEL
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- •• - - - - - -
WATANA COFFERDAM AND PORTAL AREA GEOLOGIC MAP
-
/ 8 /
,.,..-.,.,..--,..,. ...... .-..... ___ ~...!'
_.-- ~..._ _ _...T'"!:JI': 0 AUlJ'AIII -------......__ - <("" '-...__..~-- ,_... ---- --- ,-......., ________ _
- - - -
, ... I
FIGURE
- - -
![Page 57: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/57.jpg)
l"f,.·'-· -~-ll:,, --------------------...-----!/
~~
!r
:c· i;
~1
I' : 1'
' ~<
r~ l' 1-;·
·r ::.,,
l )
tl [·
I -· - ;tJ
. t
'
!, )_{
;{
·' '1
t f ; I» " Jt
J.
' r·r---I·~! APU[il r-nUlua
\
'tit.
s
6
-I-I
N
Oo5•J8Q"E
SET m:
SET II
OS5°/9C/'
JOINT PLOT DOVJNSTREAr1f PORTAL AREA
' I
' ' I
• l . :
![Page 58: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/58.jpg)
1700
17!10
... I~GO ... 1:! ~
"' 1520
0 ;: .. > .. 141!0 ~ ...
~•o
1400
SECTION A-A
- - -
.. ,
- -
1780
1720
1440
1400
- - -EL 149~ ... , ··~ _
SECTION B-8
- -
_...--··---···
t I 1
I 1 r t
SECTION C·C
- -
0 0
~ ;! z
·---· . !
[1.1500
GUIDE WAlL AltOIORto TO ROCK
' ,J.,.,.
F\.lP Bllt~ET TO 1!E: ~ll!\ICTEO AFTU. M'tltSIOH
STCPlOG GU!CE:
·f. ~L .1~09
I i EL 14!10
... t
L ,\', -~!!-c~~
Ill'
"'-2 :L:;a L,. EL 1440
SECTION D-~
'<I~ • 40 f£El)
WATANA OOWNSTREA~ ~ORTALS
PLAN 6 SEtTfONS EXHIBIT F 1'\.ATE F20
- - - - -
![Page 59: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/59.jpg)
----------------- -DOWNSTREAM DIVERSION AND T.AILRACE PORTALS MAP
ALTERNATE LOCATION
·---
'----··~
~.~ .....__
-~- """"'- .... ,
·----------- 1700 ---- ----·------·- --·-------.. --
![Page 60: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/60.jpg)
-
t; ... ... !:
-
1600
% 1500 0 ;:: ~ ~ ...
1400
1600
.... ... ... ....
= 2i 1500
ti >
d
'"' [
-
ELI450
- - - - - .. - - - - - -DOWN~TRJ;AM DIVERSION PORTALS SECTIONS
..... ·-ACCESS ROAO
,r-STRIP TO ROCK /
I I
ROAO
Alli:RNATE DIVERSION TUHIIEL NO I
/ACCES:> ROAD ~;>-·
/·STRIP TO ROCIC
At:TERHATE TI.ILRACE TUN!ia
ALTERNATE DIVERSION PLAN
AZIMUTH 045• ~F SECTION __..225•
SUSIYNA RIVER
...... ........... .........
..... , .. '~· --
SUSITNA RIVER
LOO!<ING UPSTREAM
1600
t1 .... = 1500 z 0 ;:: ~ ... ... ...
1400
/
.... ~ TUNNEL
AIIERNATE TAILAAC£ I DIVERSION TUNNEL NO 2
1 ..
5 • .,.".-AZIMUTH _.,.
1..,.
" OF SECTION "" "' LOOKING NORTH
SECTION A•A
- -
SUSITHA RIVER
COFFERDAM EL 1412
0 SCALE I
- -
![Page 61: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/61.jpg)
- SCOPE OF WINTER/SUMMER PROGRAM
![Page 62: NOVEMBER 18-19) · I I I •• I I I I I I I I I I I I I I I .. Attendance: Q Time & Locati·on: 09:00 09:10 09:20 09:40 10:15 10:30 11:00 11:30 12:00 i: 00 1:20 1:45 2:15 3:00 3:3G](https://reader034.fdocuments.us/reader034/viewer/2022042109/5e8943bc419b9b2d1e2b2c37/html5/thumbnails/62.jpg)
I I I I I I I I I I -I I I I I I I I I
DA~1SITE
\~INTER GEOTECHNICAL PROGRAM
OBJECTIVES OBTAIN DESIGN LEVEL DATA TO FINALIZE GENERAL ARRANGEMENT TO ESTABLiSH CONSTRUCTION COSTS AND SCHEDULES
DATA TO BE OBTAINED:
SCOPE
- ENGINEERING PROPERTIES OF BEDROCK & ALLUVIUf~ - THICKNESS OF ALLUV I U~1 - DA~SITE GEOLOGY - GEOHYDROLOGY
APPROXIMATELY 2000-LF HAMMER DRILLING - COFFERDAM - MAIN DAr~ - DOWNSTREAM COFFERDAM - U/S PORTAL - PLUNGE POOL
APPROXIMATELY 15)000-LF SEISMIC REFRACTION SURVEYS ~ - U/S COFFERDAM
- ~lAIN DAM - DIS COFFERDAM - U/S PORTAL - PLUNGE POOL
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I I I I I I I I I I. I I I I I I I I I
WINTER GEOTECHNICAL
PROGRAM
RELICT CHANNEUBORROW AREA D
OBJECTIVES
SCOPE
OBTAIN DESIGN LEVEL DATA TO DETERMINE ENGINEERING AND DESIGN REQUIREMENTS AND TO DETERMINE CONSTRUCTION COSTS AND SCHEDULE.
- DRILLING APPROXIMATELY 4J30fi-LF BY HAMMER DRILLING INSTALL PIEZOMETERS AND THERI'~ISTORS
- INSTALL WELLS - PERFORM FIELD PERMEABILITY TESTING
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I I I SUMMER 1983
GEOTECHNICAL I PROGRAM
I OBJECTIVE -:
I TO CONTINUE IN OBTAINING DESIGN LEVEL DATA
I SCOPE
I TECHNIQUES TO BE CONSIDERED: - MAPPING I - REMOTE SENSING - DRILLING
I PLUG/PROBE CORING <VERTICAL TO HORIZONTAL)
I OVERBURDEN SAMPLING - EXCAVATION
I TEST TRENCHING TEST PIT/BLAST
~
CAISSON/SHAFT I ADIT SURFACE GEOPHYSICS -
I SEISMIC REFRACTION SEISMIC REFLECTION
I RESISTIVITY RADAR
I ETC. - DOWNHOLE INSTRUMENTATION
THERMAL I PIEZOMETRIC
I DEFORMATION
I
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I I I I I I I I I I I I I I I I I I 1
{t - DOWNHOLE TESTING PERMEABILITY SEISMIC. VELOCITY IMAGERY DENSITY/MOISTURE r10DULUS HARDNESS IN-SITU STRESS INCLINATION DEFORMATION
- MATERIAL TESTING ROUTINE SOIL & ROCK TESTING DYNAMIC TESTING CONCRETE TESTING
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- ·- - - - -- - .... ! - - - - - - .. - - -
~~~~f~l WATANA 1982-85 PROPOSED GEOTECHNICAL INVE.STIGATION PROGRAM
1982 1983 1984 , JFMAMJJASOHDJFMAMJJAS01NDJFMAMJJASOND .
BORROW AREAS INVESTIGATION/ RESERVOIR
GEOLOGIC MAPPING
DRILLING a TESTING
LABORATORY TESTING
GEOPHYSICS
RELICT CHANNEL INVESTIGATION
DRILLING a TESTING
LABORATORY TESTING
DAMSITE !NVESTIGATION
GEOLOGIC MAPPING
GEOPHYSICAL SURVEYS
DIAMOND DRILLING
RIVER DRILLING
TEST ADITS
LABORATORY TESTING
. ~
1m - I ~ .
-I;:
• • • "'
I
ill Ufll
.
~~#l •II 'Ill ~ II ~~ ~-:;
I!
:1;n, '""
I ~
I II [I il [Ill
--~ = \!(, r.~r!: .:~-: ~-tt: J.~ll
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- ROCKFILL CONCRETE FACED DAM
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I I I ,I I I I I ·I I I I I I ~
I
•• I I ••
CONCRETE FACE FILL DAM
AT WATANA
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I I I I I I I I I I I I
' I I I I I I
CONCRETE FACE FILL DAM ALTERNATIVE AT WATANA
PERCEIVED ADVANTAGES:
I ELIMINATION OF EARTH CORE LESS DEPENDENCE ON WEATHER
CONDITIONS
I STEEPER SLOPES
1,5:1 INSTEAD OF 2 AND 2.4:1~ HENCE
LESS MATERIAL LESS FOUNDATION PREPARATIONS fv10RE FLEXIBILITY IN LAYOUT - PARTICULARLY TUNNEL PORTALS
I IMPROVED SCHEDULE
I IMPROVED STABILITY UNDER SEISMIC LOADING
I STABILITY NOT DEPENDENT ON INTEGRITY OF FACE SLAB - CAN
WITHSTAND VERY HIGH LEAKAGE RATES
I LOWER COST
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I .I I I I I I I I •• I I I I I I I I I
• •
• • • •
CONCRETE FACE FILL DAM ALTERNATIVE AT WATANA
DISADVANTAGES:
NO PRECEDENT FOR HEIGHT - 70% INCREASE OVER AREIA
NO PRECEDENT FOR CLIMATE
NO PRECEDENT FOR SEISMICITY
MUST COMPLETE ROCK FILL BEFORE CONSTRUCTING FACE SLAB
PRECEDENTS INCLUDE IMPERVIOUS EARTH COVER BASE OF FACE
LATE START FOR IMPOUNDMENT
DIFFICULT AND COSTLY TO REMEDY ANY LEAKAGE THROUGH FACE SLAB
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I I I I I I I I I I I I I I I •• I I I
1.
2.
3.
4.
5.
DAM
SALT SPRINGS
PARADELA
ALTO ANCHICAYJl.
ARE IA
vJATANA TABASARA LA MIEL
CONCRETE FACE FILL DAM
PRECEDENT STURCTURES
YEAR COMPLETED
1930
1955
1974
1980
198? 198? 198?
HEIGHT FEET
330
370.
460
525
885 590 650
% INCREASE
12
:24
ll.f
68 12 24
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• 300 '
WATANA !'( 270 ~
3 -:r.: (I)
()
200 " z c( LA MIEL .
en z <(
ijj --w - c( TABASARJ. I= E ..J 0 0:: ~~ w LIJ ~ c( -~ :E (/) c ~
z c( c( '?o - 0:: 1- ~ 0 0 3: . (!) 0 iii 0 0 ::t: 100
)( )( )( )(
XXX
8 )( X o Oo·
)( X 0 0 0
0 ~~------~--·--------~--------~--------~~ 1920 1940 1960 1980
COMPlETION DATE
CONCRETE FACE ROCK FILL DAMS '• -
-- .... -- -~ - - w - - ~- - - - -
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I I I I .I I I I I I I I I I I I I I I
EARTH ROCK FILL DAM ALTERNATIVE AT WATANA
e 'WITHIN PRECEDENT - PROVEN STABILITY
e MATERIALS READILY AVAILABLE AT OPTIMUM MOISTURE CONTENT
I SELF-HEALING LEAKAGE
I EARLY START TO IMPOUNDMENT
I GOOD CHANCE OF INCORPORATING COFFERDAM(s) IN STRUCTURE -LAYOUT IMPROVED
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I I I I I I I I I I I I I I I I I I I
EARTH - ROCK FILL ALTERNATiVE
SUPPORTING EVIDENCE
1. LG 2
I CONCRETE FACE APPROXIMATELY 5% CHEAPER ~
CONSULTANTS· RECOMMENDED MANAGER STAY WITH PROVEN TYPE
FOR SITE CLIMATIC CONDITIONS - NO PRECEDENT (PECK)
2. TABASARA
I BOARD OF CONSULTANTS CONSIDERED 180 M PRUDENT
MAXIMUM HEIGHT FOR CONCRETE FACE FILL DAM - 15% HIGHER THAN MAXIMUM TO DATE.
SEISMICITY- 0.4 G (COOKEJ DEEREJ.MAC DONALD)
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I I I I~
I I I I I I I I I I I I I I I
USE CONCRETE FACE FILL DAM IF:
I ,NO SUITABLE CORE MATERIALS AVAILABLE
e HEIGHT WITHIN 10-20% OF PRECEDENT
I CLIMATIC CONDITIONS VERY \~ET
I RESERVOIR CAN BE DRAWN DOWN ECONOMICALLY
I SLAB NOT EXPOSED TO SEVERE FREEZE-THAW CYCLES
e EARLY IMPOUNDMENT NOT CRITICAL
• CHEAPER THAN ALTERNATIVE(S)