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

8IlEET I IF 7

FEATURE:: DlJRAH60 PUMPING PUNT
LOCATION;
BE6Utt S2-1HB nNlSHED: 12-22-88
~'~tEOF~ 30 I S"9A.701

~: ANIMAS-U. PUTA
COORlIN.l.TES: If 223-402.4 E
TOTAL DEP1lt 17A.15
DEPTH TO BEDROCk: 31.0
03-27-es

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SlATE: COI.ClRADO
&AO\.N) E1..EYAnOP<t '.495.0
AN&l.E FROM HOAIZaNT Al: 90 8UA!H8:
HOLE ~IiGED BY: ~~
"""".... BY: 'P~ K..6I-,- I

CLASSIFICATION AND
PHYSICAL CONDITION

FRESH INt); PLANAR:: SU6HTt.Y RW6H OW}:
LOCATED AT 52." Fl.

1 JOINT AT 29 DE6REES: TI6HT (001: VERY THIN eU)
!;DATIN. OF CL.AV, fRESH (Mil: PUJUR; SU6HTLY
R1lUGH CA.): l.OCATED AT 59.0 ".

1 .JOINT AT e aEIiREES; TIGHT 1001 TO SU6HTLY
oPEN COlI: vtAY TKIN IH) COATIN8 OF CUY,
FJIESH Bu.): PUtWl; SLIGHTLY ROlJ6H (Roll:
LOCATED AT SI.e FT.

3 JOINTS AT 16 TO 22 DE&REE&:: SPACED Sl2 IN.
(SPI): TliHT 100): CLEAN 1T01: FRESH 11ft]:
PL.ANAR; SU6HTLY ROUSH (R4) TO MODERATELY
ROIJQf CR3l: lOCATED FADM 18.8 TO 89.1 Fl.

_ lB.. - ".It CIW.. CII4AI:
BRITTLE. BUCK; lAMINATED AT 82 DE6AEES FROM
TtE CORE AXIS; SU&H1\..Y NEATHEIlED lV31: MODo-
ERA-TEL Y SOFT CH5l. CAN BE SCRATCHEtl Mt1M
Sl..I6HT TO MOOElUoTE KNIFE. PAESSl.AE; stWlP
CONT,t.CTS.

~.. - UI2.O: IAfaI'nlNI! III1H IIL.lITGNE ItnDB!DI
....,
CONSISTS OF APPROXlMATELV 10 PERCafT SJH3STONE
WITH to PERCen" SILTSTONE AIC) ONE COAL BED.

SANDSTOME - QUARTZOSE. FiNE TO lEDIUM &RAINED.
LIllHT 9JUY; varr OOM..Y TO THlII.Y eamiD 1318
IN. TO 0.2 FT.I: FRESH 1'f1): MODEA.lTEl.Y HARD ltMJ
TO tuAO 1H31. DIFFIcu.. T TO SCI\I.lQol IIIITH ICNIFE:
MEAl( TO NO REACTION WITH HCl....

SILTSTONE - OCCASIotW..LY SAND'l', 6RAY 10 OAAIC
8RAY: OCCURS IN BEDS UP TO 0.'" ". THIel(, PAE-
DOMI/WoITL Y CtlNVCLUTED I!IEDOIM8. UM1NATED TO van'
'THlN..Y 8EDDED (LESS ntAH 113210 0.1 " THICK):
FfilESH (W1); MOOERATUV sOfT 0t5) CAN liE SCRATCHED
III1TH MDDEA.lTE KNIFE PfIESSUFlE: ME.lK TO NO FlEACTION
t11TM HCL.

OVEIW.L INTERV.AL HAS BEDOINS OAlEtrITED 111 TO 113
DEIiAtES FllOM CORE:.lX1S: CONTAINS CARSQIU,CEDUS
STAINliEJlS~: CONTAINS SIlTSTONE CCJN-o
CAETIONS TO O.t n.; HAS PYRITE FAOM Utl.tI TO
152.0 Fl. IN WOUL.ES AM) MASSES TO t/4 IN.:
_ ~CK FRtIM 14B.1il TO 1152.0 FT. IS ALTERED BV
lNIE1l. YIN& I8HECIUS Dna: TO Ii DAAJCER ....Y AND
CONT.l1NS PYRITE IiLClHI MANY 8EDDIN8 PLANES AND
.JOINT BOUtClARIES: SH.fJP LOIEA CONTACT. BUIK1l..Y
F'MCT\IUD IFD3I FROM 11.1 TO 78.7 11I1114 Dl~
UNUIT%ES AT ANLlB nlDM THE CORE AXIS AS
1'lIU.0lIS -
-
3 .JOINTS FROM 74.1 TO 74.1 AT l!l TO 24 PERES:
SPACED 1/1 IN.: TlIIiHf .1001 fCl SLlltm.Y OPEN
(01): a..EAN (TOI: F'fIE8H tIIIl1; PUtWt SUIHT\..Y
AllU&H OM) TO ~TB..V AOJIH tR31.

I SHEET 3 OF 7 I DRIll. HDCE DlHoS