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.~ . i-. <- . X 3.226,000 ~ " 'I " # 'I II II ( // \. ~-------- ? ,5~_/ i /' 0/ X " \Qsc >~ 1 \ r. \ 4900 " : r4900 . \ Access Road, see D wgs 0\ \ 382-0-/606 frru /6/3 For r .. \\/. addillOnal geology, see '" ' ~ ~Wg~;0-1607A and 16/3 ~ ~------~~I '-._. :::L..........-. ". ~ '.. -:~ -~-- o o ~. m' ~ ~ 00 .~ ---,"-"", / I ( r~ ( ! J I I / ( / ( f II 1 I 'I I \ \ ~IG "Jc-' c: .. CH 2A . eM I . II~i 12') .' ! I i ! l 1 1 I I \ \ \\ ' k ~~ \ \'1'1 i ,\I'~ \~\I)/ I i JH 134 .\~\\l..-) ~\' · ~. \~','lo. ",.>'l" IIJI<\ \ j' \ I , I ~4; " LJ . , "800 .. \",.. "''') r_ < 'I~ < . ( , '. .,~ , ", ~ ~ ".': \~ CH 3A . 9~ L OO~ j ~ f . r " (I( J1 rl()N , :; f) /.i Z-2fJ-72 o - '-rr) . q(. + ------ 11~ II II ,/1/ 11i it , " i'/I " +" 1/1 1'" " //;' ..." I" I" / " " {II 1/ 1/ II t 1- o~~ <"~=\=l ,,- "" ,./' \ \\~. " \ ~- ,f =o\~c_--;; - " )/:1 1/,1'" --_;0. II \~\ f'-... ! ' i ,~, ,---1:~'r"""\J''' ':> \.i~9~~JU ,\f C ~ r J ~~~~"'~=o= o~o = 0 ~ t~~~ ~j ~~ "," Osc -0 AD I . //1 . VJ Highway 96 ,\ If ~ I i . TP 1254 ~~~ AD 3 . Line '0. Keb r~ ! ~ + = GO' ~ ~t ~+ + -1- 17. e: - Concrete dam and spillway outlme Keb Kec r +1 OH 24 . oJ, hi lj DH~32 JL -'I 1 -1-' DH 129 t, . DH 1?6 . [)H '28 '. ::.~ JH 133 . o o o' ~ )-.X3,2:?O,000 DH 130 . NOTES Coordinate system (local grid) used on this draWing is not applicable to all coordinates shawn on geologic logs. Additional borrow Investigations Information not shown on thIs draWing IS available at the Project Office 5011 and Rock Hardness scale located on Dwg. 382-D-80IA and Cross sect on A-A shown on Dwgs_ 382-0-802 through 807 Cross sect on 8-8 shown on Dwg_ 382-0-808 Cross sect on (:-C and D-r) shown on Owg. 382-0-809 Cross sect on E~E shown on Dwg 382-0-810 Cross sect on F -F shown on Owe 382-D-811 Cross sect n G-G shown nOw 382-0 812 .~.~t ." -+ '--- + + 400 I I"", + ',,'" o <00 I SCALE OF FE ET BOO I 1200 I .J I .1 Dh 131 . ~ \- {'7Zv \J 39 EXPLANATION Oal Unconsolidated and variably stratified stream floodplain deposita 60'%. subrounded fine-medium sand, 25 7. nonplostic to medium plasticity fines, 1510 gravel and cobbles up to 9" in dia- .eter; hardness 1, tan to brown. Opt Unconsolidated cnlluvh.l1l, s lopewash, and loess, lean clay c~poled of 8070 medi~ plasticity fines, 207. fine sand; Hardnes8 2-3, tan-brown, colluvi1.B. and slopewash occurs along valley and hillsides, loess atop ridges and mesas. Unconsolidated and poorly stratified sands, gravels, and cobblea with occasional clay lenses. Material is sub- rounded granitic, and up to 9" in diameter ~ deposits occur along slopes of valley walls. Terrace deposit. Cry.talline It.estone beds 1-2' thick with interbedded thl.n shales lHS than 10" thick. Limestone hardness 7. shale hardne8s 5; gray to tan. (furt Hays Limestone) Kf ~erately to well ce.ented fine to meditm sandstone; indi- ~ vidual beds are 2-4' thick, cross-bedded with shaly zones; u b.ardnea. 6-7 ~ brown to gray; Concretions up to 4 I in E 'd~.. are COODlon. (Codell Sandstone) ~Mas8ive fissile shale; upper section is silty and sandy, grades QI into r.odell sandstone, Hardness 5-6; gray to bluish black. :;:: (lllue Hill Shale) '" ~Silty and sandy limy fissile shale with occasional 0.3' thick ~ crystalline liJaestone beds: Hardness 5, dark grav to olack. L.Q'airport Shale) I Ftne crystalline limestone composed usually of 26 beds ~6-l2" thick) separated by a 1 imy shale; occasional bentonite I 8~; l1Jllestone hardness 8. shale hardness 5; dark gray to black. Occasional 750 joints and fractures partially cal- c cite filled. (Bridge Creek Limestone) o Kghh~Silty and clayey shale, platy, and limy; occasional bentonite 1tI seams (0.3'); Rardness 5, dark gray to black, air#and water- ~. g slakes bsdly. (Hartland Shale) Kghl ~shaly to crystalline limestone. fissile to platy and petro- e liferous with wavey laminae, 2 bed of coquina at base ~ overlain by bentonite (0.3-2'), Hardness 5-6, black to .c dark gray; 450 open joints 1 per 6' of drill hole, air-and ~ water-slakes badly. (Lincoln Limestone) ~ ... ,---- ':.J Kg Silty s\tale. fissile to beds l' thicl<. numerous limy laminae; Iiardlte<Is 5-6. darl< gray to black; 45 open joints. 1 per 10' of drill hole, occasional open fractures, gypBUIl (selenite) crystals are connon in joints and fractures, air-and water-slakes badl~ (Graneros Shale) Kdt I Siltstone with zones of shale and fine sandstone; beds are 0.3-3.0" thick and crossbedded, carbonaceous laminae common alaftS bedding planes; hardness 7, gray to dark gray; g low angle open joints I per 15' of drill hole, a few open ~ vertical fractures; weathered surface is case hardened. e (Dakota Transition) Kd ~ Finre1llledi... &elldstone, sugary texture and moderately pocous; as beds are 0.5'-6.0' thick, lenses of black shale and carbonaceous '" l_inae c~; har_ 7-8; buff to li8l>t Fay; a feo. ~ tight vertical fractur"". )0-50" """" to ti~t joints 1 ~ per 10' of drill hole; case hardened on weathered surface; ~2" solution vugs: on weathered surface. (Dakota Sandstone) --L- _ _ c ~~.. _ry between seologic units. Feult (daaked where ""","""illate) s_i"8 relative __ D _, U up Strike IBId dip of betdiag. 110. 5, Pueblo ~~ MstTict 110:'111 1Io1e DR, eo.-e lIo:'i11 lIolel ' Angle hole with beST ing aod hor~al ,""oJectioo. CR. a...:.:.. Ro 1 e AP. p.,.,.. Au&er Hole AD, Z4-t..clt ~il Auger Hole TP, Test Pit T-l, t.ocsti_ of In Sltu Test, 6-inch di_ hole, no log r.:tarad. Teat data available in COIUItruc- ~t.~~i;:d~rt~~tS(,w,... token In conjunction with hole. see Owgs. 382 - D~ 793 thru 798, ond 852 thru 8 56}. Axia of aaticline Abandoned oil well, 12-1/2" surface cSBing. -----"I . . . . . . . .\-f\ . JOint rosette (CONTIf\JUEO ON DWG 382-0-80IAl ~ ALlIIAYS TlllnK SAfETV g\ ~ I If UNITED STATES DEPARTMENT OF THE INTER'OR BUREAU OF RECLAMATION )~ FRY/NGPAN -ARKANSAS PROJECT- COLORADO PUEBLO DAM LOCATION OF EXPLORATION AND SURFACE GEOLOGY 802 _L,c~C,--~Ra R.E H P . , DENVER,COLORADO, ..JANUARY 20, I~"'O "FO ~E.\ 2--~'~nl I OVERLAY