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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G"-OLOGIC LOG OF ORILL HOLE NO. OH-105

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....1\lRe DUIWf60 PUlPINII Pl..ANT PAOJlCT: ,t.NIHAS-L4 pun. sr.re COLORADO
LOCAl-ION: COORDINATES: N m"02. .. E 1301116".9 6AlIUND ELEVATION: 6.95.0
eE8lM: 12-U-8e FINISHED:. 12-22-1. TOTAL DD>ll1:- 1.''',5 IoN6LE FROM HORIZONTAl.: 80 BEARING:
DEPTH AND a.EV. OF "ATER DEPTH TO JEDROCX: 31.0 HOLE LOSKO BY: ~~E~EfVS1OHE
I..EVa. MCl D.fr, TE MEl.SUAED: 3D l&d".701 03-27-e5l .....t......... 7' . q
PERM~Al-1kITY 1/! > ...
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" ~ z 0 I:; 0 .. CLASSIFICATION AND
NOTES % ~~ U
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~ ~- . 0 z ~ ~ PHYSICAL CONDITION
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1" RAKlDM f'RACTURES NEAE NOTED FROM lSt.S TO
Uil.B FT. AT ANil..ES FROM 0 TO 110 DECREES:
TISJiT 'DO) 10 SlI6Hll..Y oPEN losl: varY 'JHlN
ITS) ;YPSUM AND/OR CALCITE UF1U.IN&S:
~ TOT~Y HEALED Ot.1l TO MODERATELY HEALED
Mal: FRESH (lU): IAAE6UUA: ROU8H IR2) TO
MODERATELY ROU6H 1A31.

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lat;1 .. S32.1t COAL CMsAI:
BRITTLE. BUCK: LAMltUTEtI AT 80 DEIlREE5 FROM
r- 'THE ctIAE AXIS;. fRESH (WI): MOOEAATELY SOFT
oel. CAN BE SCRATCHED )lITH SLJ6HT TD NOD-
ERATE IOUFI PRESStR: SHARP CONTACTS.

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1IIlI:.O - 110.7:. 1rRT'lAA'r DJICE AND ''''' ....0:

112.0 - .'0.1:: ALTBED AMlEBITE DtJCE:
POfW'HYRI:rtC. a.FlIt &RAY TO 6R.a.Y-6AEEN 6RO\.lNOMtoSS
WITH PHENOCRYSTS IF cnwn:z. CALCITE. IJrIJ fELD-
SPARS TO 1/4 IN.. CONTAINS CRYSTAUl OF pYRITE
TO 1/" IN.. KJD4 OF TlE APUSITE IS AL TEAED TO
PFlOP'\'l.ITE: NO FOLIATION IS OISCEANAlllf:: FRESH
l'ljll: MDDEAAl!LY SOFT (H5) TO HARD lH31: NO TO
STAONS REACTIQN WITH MCl... UPPER CONTACT "FACl4
1l52.0 TO U12.4 FT. CONSISTS OF BRECCIATED ~
STllHE ~A&MEtfTS. SAND TO CD88LE SIZED. AHSULAA.
IN OAfIC lONY 8FI(ItJIrCJHASS. MOOERATELY FRACTURED
(F05) )111M OISCONTIWJ:nES AT AH6lES FADM TtE
CORE AXIS AS FOLLOMS -

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6 JOINTS AT 18 TO 31 DElmEES. SPACED 0.7 TO 3.3
FT.: TIBHT lOO} TO MODERATELY OPEN 10211: veRY
TltIN (111 TO MDDEAATE1.Y TttIN ITl!:J FII..L1NSS OF
CALCITE. lWAAT2 ANJ PYRITE: PARTLY HEALED
lILSl TO TOTAU.Y HE.lLEO 01.1): fRESH !Wl}:
PLANAR TO IRAE&UUA: MODERl.TU Y ROU8H IR!I TO
ROUGH lA2I: L.OCATED fROM U52.' TO leg.7 FT.

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11 ,JOINTS AT 311 TO 42 DElIlA!ES. SPAClED 0.1 TO 1.2
FT.: TIIHT 1001 TO SUQHTL.Y OPEN (01): van'
TlfIN ITS) COATIMBS OF cu.y AND PYRIlE: PAATl..Y
JEALIED ItI..M )11TH Gw.RT2 .valOR CAL.CI1't: FRESH
IItSI: PLANolA: MOOlRATE1.Y AlIU6H OQJ: L.OCATED
FADM 19.0 TO 157." FT.

1 .JOINT AT ..6 DE.&AEES;; MODEN.TEL.Y OPEN 102): THIN
tT31 CO,lT]NllS OF lNARTZ AN) CAl..cm CAVSTAUI TO
f./.. IN. AlSO PAATlAU.Y FIlLED )lITH 1AAva. SIZED
AP'SlA.AR SAtGSTONE FRAliIMENTS; PARTlY HEAl.ED
M.1l}: FRESH 1M11: PUtWt MODERATELY ROUGH
tR3}: SUClCENSIDSl AT 40 D!IOAEES FROM ItAXlMUM
JOINt OIP; L.OCATED AT 1116.11 n.

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1 .JOUfT AT Ie 0EliiREES: SLICHTLY OPEN 1011: VERY
l)QN ITJ) LAYER CF PYRITE: ON JOINT 5lII"Aces:
FRESH !W11: NAvY: SU6KTLY ROO.... 1R41: LOCATED
AT 152.2 FT.

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COMMENrS:

I SHEET !5 OF 7 I CRILL HOLE OH-105