REP49917

• Permit No: C1981041
• IBM Index Class Name: Report
• Doc Date: 10/19/1999
• Doc Name: QUARTERLY REFUSE PILE INSPECTION REPORT 3RD QTR 1999 and May 1994 Phase II Stability Anaylysis
• Permit Index Doc Type: STABILITY REPORT
• Media Type: D
• Archive: No

w.o. No. -sslsol DRILL LOG REPORT SHEET 2 OF 2
CLIENT / JOB DESCRIPTION POWDERHORN COAL COMPANY / CRDA ~1 GEOTECHNIOAI_ INVESTIGATION
LOCATION CRDA #1 / BENCH #1 HOLE NO. 2
COORD. N. i D17na3 96 E. i nA1 t a 'Sg GROUND ELEV. aR79J7 DIP (ANGLE fROM NOR/ZJ NA BEARING NA
DATE BEGUN 3/14/94 FINISHED 3/15/94 RIG TYPE MOBILE B50 LOGGED BY J.HECK
INTERVAL (FT) CORE
RECOVERY
RILLING
VI
I PENETRATION TESTS

FROM
TO
(FT) D
CONDITIONS /
SUAL CLASSIFICAT
ON / CORE SAMPLE / DRIVE SAMPLE
BLOWS
PEN/FT
35 40 DRILLING CONDITIONS: V.HARD 35-37.5', FIRM 37.5-38.5', SOFT 38.5-39', FIRM TO
HARD 39-39.75', SOFT 39.75-40'
VISUAL CLASSIFICATION: COAL REFUSE
2.5 CORE SAMPLE: MOIST 37.5-38.75', DRY 38.75-40'
40 45 DRILLING CONDITIONS: SOFT 40-41', FIRM-HARD 41 -42', SOFT 42-43.4',
HARD 43.5-44.5', FIRM 44.5-45'
VISUAL CLASSIFICATION: COAL REFUSE
3 CORE SAMPLE: WET 40-40.75', DRY 40.75-43', MOIST 43-43.4'
45 50 DRILLING CONDITIONS: V.SOFT 45-45.5', FIRM 45.5-47', HARD 47-50'
VISUAL CLASSIFICATION: ALLUVIUM 45-50'
1.5 CORE SAMPLE: MOIST 45.5-47'
50 55 DRILLING CONDITIONS: HARD 50-52', V.HARD 52-53.5', FIRM 53.5-54', HARD 54-5 '
DRIVE SAMPLE: 12/10/12/33 .5/.5/.5/.5/
VISUAL CLASSIFICATION: GRAVEL 50-51.5', SANDSTONE 51.5-52'
2 CORE SAMPLE: WEATHERED S.S. W/ ALLUVIAL GRAVEL
55 60 DRILLING CONDITIONS: HARD 55-60'
DRIVE TEST: 11/10/21/17 .5/.5/.5/.5
VISUAL CLASSIFICATION: ALLUVIUM 55-56.5', S.S. W/ TRACE OF SHALE 56.5-57'
2 CORE SAMPLE: MOIST 55-57'

ALLUVIUM SAMPLE: 44.5-46', 50-52.3', 55-57'
PLATE 1 4 Es ER RN

WEI\,FORM\,67