WSPC06446

• File Number: 8220.106.A.1.c
• Description: Colorado River Water Projects - Animas La Plata - Description - Construction - Durango Pump Station
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 10/7/2002
• Author: DOI-BOR
• Title: Durango Pumping Plant - Stage I - Project Specifications - Volume IV
• Water Supply Pro - Doc Type: Report/Study

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GEOLOGIC LOG OF DRILL HOLE NO. DH-105

III!ET 2 IF 7

FEATlJIE:: 0UA>>I60 P\IIPIN6 PUNT
LOCATION:
8E:aIN: 1.2-12-81 FINISHED: i2-22-a1
~>><<1NJEL!ItE~ 30 I 64514.701

PAOoJECT: AN1MAS-U PUTA
COORDINATES: N 2C3oI02.. E
TO'tAL tlEPnt: 11"lo.6
DEPTH TO BEOAQCK:: 31.0
03-27~U

1308164.9

PERME"'~-1~tTy 1/! > ...
> ~ ~ ~ > !
0- 0 0- m
NOTES ~ M_ U M a
0- ~'!i II! ~ Z 0-
Il; W M M
"'... ~;:; ~ M ~ ~
0 ~~ -' 0- ~
w> ml ~ ~
z mm u .:
~l! w. u c ~ .
or- a If !II w
. 3- ~ ~ M or a

DATE ELEVATION
12-27-88 &4$0,8 ~ 0 DO 0.0
1-3t-89 ......
2-27-99 8ASS.l L .-,
.
>-27.... 1l4e.D ....::
NOTE - PIEZOMETEFI IN-
STau.....nON D[STA(lYED 0 0' 0.0
IN NAY 1989. :
- .J 143
.r
....:: 13. ., ...
.
:L -,
13":: 2" 70 12.1 143.
. .J
r
"0-:
0 7. 0.0 143
( L
-,
'""":
2543 15 35.6

100 100

100 100

100 100

,

98 98

,

.too 100

7
94 4011 I--

. .J
r F-' . F-'
'BO- ~.. . - -
0 7S 0.0 '00 12
L
-, PL' 7 Kpl
,,0-: 0 7. 0.0 .. '7
BD TOM (F HOf-E
110-

:
-:
-

:

c-.mt

DfstRIPTlYE CRITDttA FOR
Roac.
DRAllIN6 NO. Ao-D-6GSI STNIWlD DESCRlPTClAS AND
DODUPTIVE CRITERIA FOR
DISCONTINJlTlU .

AN6l.ES ARE MEASUE FROM 'THE CORE AXIS AT 0 DESREES.

A88AEV1ATIClHS:

HllI .. 2.S IN. CORE DU.. 3.78 IN. HOLE alA.
SPT .. STAllJAfm PEtETRATlON RESISTANCE TESTINI.
PIElD .. PIE%DHETEA

STATE: COLORADO
GROUND ElEVATION: 6495.0
ANGLE ",OM tl0R110tfT AL: 80 BEARING:
HOU 1.0G6Etl BY:: _1ltORJ!IllJliS/Bf.CWPVSTgNE
REVI.... "" ";P'~~,yl

CLASSIFICATION AND
PHYSICAL CONDITION

AT 39.S n.

:I .JOINT AT 11 DE6IlEE5: TIGHT fOOl: MODERATE!.. Y
THIN "21 FlLUNri TO lIe" llITH FAT c:u.'r;
MDDEAA lELY !lIEA TtEAED 1W51. WITH IRON OXIDE
STAININI EXTDIDINI TO 0.115 FT. INTO SI.IlAClLN)-
1M BEDROCK: PLANAR; Sl.I6HTL.Y RDU6H OWl TO
NoDau.my !,DUSH (A3); LOCATED AT 39.1 FT.

2 HEDDI"8 PUNE ,JOINT$ AT n DE8AEES: SLIGHTLY
OPEN (01): VERY THIN (1'11 (:()ATINa OF IRON
r OXIDE: SPACED 1I2 IN. APART: MOOERATElY NEATH-
ERED lV!5r: PLANAR: MODERATELY ROU8H CRaJ TO
AOU6H tR3J: LOCATED AT 39.' ".

I<IIf ".J - ....1: mTBTONE:
IRAY, SAfCJY: lAMINATED: SU6HTLY W'EATtEAED
r- MI. VERY SOFT om CAN BE MlILDED "ITH FINIEA
PflESSURE: RETAINS OAIBINAL STRUC11JRE BUT "AS
DEFORMED 0URIM8 DRILLIN8; 'lEAK TO NO HCL
REACTIott SHARP CONTACTS.

112.0 - a.1: anllTONE ~ 1...1~ lWI/III1'GE
llMl:
CONSISTS OF SILTSTONE "ITH APfIfIOXIMATElY 20 PER-
CENT SAMlSTONE IN BCDS TO 1.2 n. THIck.

SILTSTDtE - OCCASIONALLY SANJY. &RAY TO OARK
&RAY: PAalOMIlUNTL Y CONVOLUTED BEDDIN;. LAM-
IM,t.TED TO VEAl' THI.... Y BEDDED (LESS THAN 1/32 TO
0.1" TH1CKl: FRESH nul: MODEfUTELY SOFT 0151
f-:-- CAN 8E SCRATCHED )11TH MOOfRATt. 1<NIf'E PRESSUAE:
NEAK TO NO AEACTION WITH HCL.

SANJSTONE - GUAAtIOSE. F'INE TO HEOl\1t /OlU.INEO.
UIlKT &RAY: VERY THIN-Y TO THIN-Y B!lJDED C31B
IN. TO 0.2 ".1: FfESH nUl: MDOER.ATELY HARD ....I
TO IWID lH31. OIFFlCUl.. T TO SCRATQI ":ITH KNIFE:
WEAK TO NO REACTION NITH HCl..

OVERALL. IHlERVAl HAS BEDDINg GRUNTED 10 TO tr.I
DESAEal FROM CORE AXIS: CONTAINS CARBONACEOUS
STRIH6ERS; SHIJI'I LONEfI CONTACT. CONTAIMS Cl..AY
INTERBEDS AS P'Ol..LOMS - ..2-51." FAT ClAY.
!II.e-9.0 SAM;lY LEAN Cl..AY, U.2-U.' LEAN cu.y.
MOOERATfLY P'RACTURED l1DSI tIlTH DISCONTINJITlES
PRERNT AT ANIl.ES FROM THE CORE AXIS AI FOLLOWS -

2 8EOD1N& PLANE: ,JOINTS AT 11 PEQAEES: UIHT 1001:
i- Cl.EAN fTO): FAESN (lI11: PLANAR; Sl..I&HT\,.Y ROU&H
IIWI: LOCA1!D AT '''.1 AICllS".8 FT.

9 .JOINTS AT .. TO 8 DECREES NOTED FROM '1.3 TO
1Sot.' FEET. SPACBI 1/2 IN. TO 0.3 ".' ISPS TO
SP81: TI8KT lOCI) TO Sl..IlilHTl.Y OPEN COll: a..EAN
r- (1'0) TO VERY THIN tT1l COI.TIN6 OF cu.y. FRESH
f1111; PREDOMINANTLY PlAJWI TO lIrOLI.AT1N8; ROlJ8H
lA2J TO LIGHTLY ROUllr lA4l . .

1 .J01HT AT 21 DEIlREES: nlHT 100): a..EAN fTol:

I SHEET 2 OF ~ DRILL HOLE OH-105