|
E 20,000
<br />O
<br />O ;
<br />r
<br />I
<br />II� I
<br />% or
<br />0
<br />0
<br />roI
<br />it
<br />3
<br />`] a �O
<br />� 11
<br />1
<br />/ 11
<br />M� I
<br />11
<br />S i
<br />S3 4
<br />E 30,000 E 40,000 E 50,000 F 60,000
<br />22
<br />LEGEND
<br />23 3 0 . -� 2
<br />- , AO WATER MONITORING STATION
<br />-- - 0
<br />/ �- - -- - -� - - - - - - -- - - - ill -- - - g6 °� -I- - - -- - - - - _ _ •t SPRING
<br />r ECSP -29 SPRING WITH POND
<br />■ ECP -7 POND (STOCK POND OR RUNOFF POND)
<br />COAL REFUSE
<br />26 hnickSpri g ��J 29 �-7 B -e• GROUND WATER MONITORING WELL
<br />EOP�2 ,
<br />��
<br />.ECSP -22 ECP- 2J i X90
<br />SP 15 - 26 - - - - - - PERMIT BOUNDARY
<br />82 ECSP 17 9200
<br />---- COUNTY LINE
<br />X00 PERENNIAL STREAM
<br />- € SP_119 1 ECSP -34 i 1 0
<br />r' - INTERMITTENT OR EPHEMERAL STREAM
<br />- - - -- -- - - - T ■ - - - - -1 - ` -� gSOO- - - - - - - DITCH
<br />-- ECP -25
<br />ECSP 30 EC -2s ■ 0 8200 RAILROAD
<br />STY'S SPRING :. I EC �- 1 a6�
<br />O I CP -32 ECSP37 ,
<br />i E ISP�39 I _ 8400 8 LAKE
<br />O
<br />i ECP -31 ■ \ I PAVED ROAD
<br />} I
<br />i
<br />o k 1 A 3200
<br />O a 1
<br />CD 1 s�4 sas Tow o f I I I 8200
<br />Oo SECONDARY OAD
<br />ECP -719/ r,. 8000 ) ` i i - - -. ]-- `. .: Y 11 1 O S33 ) 4 -51 v f� r li P_5 ��� w ` - -'
<br />N
<br />V I o I
<br />1 � � � - -- - ----- - - - - -- 4WD ROAD
<br />ECSP 00 T i 8000
<br />ECP -36 Ps Qmf 1 0 ji sfc - - -- - -- GEOLOGIC HAZARDS BOUNDARY AREA
<br />S3 r ,. "ECSP 3 G 1,2
<br />■
<br />:�
<br />. s3 - s3a�1a� 1 GEOLOGIC UNIT BOUNDARY
<br />i fc 1,2 1
<br />,. P33 -3 SP33 -6 IS - �� , a,.. B - 11i /�, i 1 \ , l &O
<br />1 f QTa QsPc1 Qis1 0 F EXPLANATION OF GEOLOGIC HAZARDS UNITS
<br />O i(
<br />O
<br />O
<br />0
<br />z
<br />0
<br />0
<br />-0
<br />P Co
<br />0 0
<br />O I )
<br />O -
<br />C
<br />I
<br />w
<br />J
<br />LL
<br />0
<br />Q
<br />34 �q
<br />I �
<br />3a- a is LANDSLIDE
<br />P w / u) h -/ Qls 1 ice, l coo i
<br />-q r ■ ECP -33 _ 1 H / / is 2 (Relative age of landslides is indicated by subscripts [ 1 is the youngest ] )
<br />l
<br />ECP -4 '� _ �
<br />■ - s, _ 1 8800
<br />'
<br />is 3
<br />mf
<br />MUDFLOW f r-, 1 Qsfc
<br />- 8600 Ql da DEBRIS AVALANCHE
<br />� 1 � �_- SP5 I S r �r
<br />v , S
<br />S-q I 1 \1 i /\\ 40o sP z z ti X00 rf ROCKFALL
<br />_
<br />r i i v� r i , tY1f 1 I i
<br />3 �s2 — ! Qd �' V (f 8
<br />r Qs c1, SP-6
<br />dPi DEBRIS FAN
<br />I 2-
<br />sfe �� s) � irk df 2 (Relative age of debris fans Is Indicated by subscripts [ 1 Is the youngest ] )
<br />1 v/
<br />la / 1 g sfc 1 SLOPE FAILURE COMPLEX
<br />8 i ° sfe Relative age of this unit is indicated b subscripts 1 is the youngest
<br />0
<br />000 �I v `. 1 2 ( 9 Y P [ Y 9 1)
<br />sfc 3
<br />DJ
<br />-
<br />w00 ° ' o ( Iry ,' sf ' V ) o us UNSTABLE SLOPE
<br />rf S2 -5 1 I o i /
<br />I
<br />- r 1� Q 1 Q1S
<br />pus POTENTIALLY UNSTABLE SLOPE
<br />I J8 cl KIjG2V\ O c' i 1 ' � Jr �i i � „r I I - i / i
<br />( f L ✓ ` pfp PHYSIOGRAPHIC FLOODPLAIN
<br />-
<br />� -- -- ,/ mfr
<br />E K
<br />,\ ,' sf -SHEET FLOW FLOODING AND EROSION
<br />I ,
<br />> mP P (p ) '' / / �° u�' ITC -1 pms POTENTIAL MINE SUBSIDENCE
<br />__14 _
<br />ph - POTENTIAL HYDROCOMPACTION
<br />f) I 1 �� ,I ��
<br />- ��—
<br />� , � ' � o / es - EXPANSIVE (SWELLING) SOIL OR ROCK
<br />�L 1 " -1 0
<br />rf) o /b' - G Qdf I tIV ( ` 6S0
<br />o (r e� m �. „ Gi _
<br />14 <a8 -t2'� 1 ' i o� 6' �� vv Qls n °� 1 f -9 7 O° ;�/ rr c'
<br />6; 0,0 ena $G C�� d##
<br />cc
<br />�1 __- _.__._ _ "``✓✓✓✓ -J__ ___ "\ ll ,� � _ -_'. � 1�.:1J pf _. �I/_ -.); �
<br />rf,es) �y -NF� 2
<br />, 6 df
<br />us P �\ � - BOO � -� _
<br />( ) Qls2 '\ ) (sfQ�gy \P' �/
<br />kplp
<br />,v .6600 �/ ��
<br />1 i
<br />2 i , m - -- I u rf oo ` PROFESSIONAL ENG /NEERS STATEMENT
<br />(sf) ,- C6
<br />6000 Qa� 1, Thomas E Leidich, state that the changes
<br />�Qag �, in revision, PR -06 dated 06 12 was prepared
<br />o
<br />- 1 P P
<br />o _ , } \
<br />is ` , (P P) o ,_\ 1 J ( ) under my supervision and all the info t'
<br />Q - o_
<br />sf z , � `� _ resented is true and correct to the be uww
<br />�(PfP) / r ( ) ,' /1 - o ue d� ! J \� p ���►�NNdy�4
<br />/ i - of m know /ed e a ormation. �� r,
<br />Qdf - y 9 0 RE
<br />Qls2 i 'O" v ( us) o I 1 O i �. �Q,O � G //,��
<br />I
<br />-- - -- - -- - -- ,° c'o \ Date Thomas E Leidich CO P. # 314555 "m;
<br />8
<br />0 a�
<br />--
<br />Z o
<br />i
<br />o JUG ? ?012 �0h�nmroanme ®t�
<br />i
<br />I ,
<br />�, �clamatfon,
<br />_o I I
<br />/ ' •� d I ) •� 1 Z I N � � I � I i Dim s,o
<br />n
<br />w
<br />2 I � and
<br />Safely
<br />o - O J Z ; I I ';�� � j� o I . � 3 Issued for PR -06 06118112 T.Leidich J. Bever LLeidiah
<br />I
<br />o W 1 O J� ` >vro /IUeY ! 2 Issued for RN -5 10129108 T.Leidich J.Bever LLeidiah
<br />I
<br />O
<br />/ I
<br />N II uw I i L �
<br />1 Update Springs and Ponds 1210,3 ✓.Nettleton N.Gonzolez ✓ N ett l e
<br />ton
<br />68 - R 90 W.
<br />R 0 Issued for PR -04 815100 J.Nettleton ✓.Gates ✓.Nettleton
<br />RIEoV. REVISIONS DATE DESIGN BY DRAWN BY R SIGNED B D
<br />EXPLANATION OF GEOLOGIC MAP UNITS Glacial Deposits
<br />TOW - Ohio Creek Wasatch Formations (Eocene and Paleocene): Qal - Floodplain alluvium (Holocene): Mixtures of silt, sand, pelbbles, and cobbles that QTa - High -level alluvium (Quaternary /Tertiary): Bouldery alluvial deposits that form Qdfl,2- Debris -fan deposits (Holocene to late Pleistocene): Unsorted, unconsolidated Qcw - Colluvial -wedge deposits (Holocene to late Pleiistocene): Unconsolidated,
<br />Vari - colored usual) red purple, green, yellow, and gray) mudstone and siltstone with have been recently deposited and/or reworked by fluvial processes. The alluvium planar, gently sloping surfaces high above modern streams. The location and debris of soil, rock, and displaced vegetation deposited where stream gradient heterogeneous soil material and rock fragments found near the base of a slope.
<br />(usually , , P ' 9 Y c Y) occurrence of the deposits Tweto and others, 1976 suggest formation during decreases. This gradient decrease most common) near the confluence of a Formed b gravity-dominated dominated rocesses, the deposits may be subject to X B W P.O. Box 535
<br />interbedded medium -gray, lenticular sandstone and conglomeratic sandstone. The forms the physiographic floodplains of the modern drainage: system and is a P ( ) 99 9 9 Y Y 9 Y- P P Y 1 O
<br />the Tertiary or early Quaternary. These deposits are subject to sheet flooding tributary stream with a larger trunk stream. Usually composed of mud, sheet -, and continued mass - wasting.
<br />formation generally is obscured by su flcial deposits, is prone to mass - wasting, and potential source of sand, gravel, and crushed -rock aggregatte. and erosion, debris -flow material, the deposits result from the rapid movement and deposition
<br />is potentially unstable. Qas - Slope -wash debris (Holocene to late Pleistocene): Generally fine- grained soil and of solid material during unusually heavy rain or snowmelt runoff. Qdf 1 deposits Elk Creek Mine Somerset, CO. 81434
<br />Kmv - Mesa Verde Formations late Cretaceous): rock detritus transported and deposited b running ater that is not confined to Colluvlal Deposits probably formed during the Holocene; Qdf2 deposits most likely were deposited (late P p Y 9
<br />Brown, gray, and light gray to white sandstone interbedded with dark gray shale. channels. The deposits form a relatively thin veneer over older surficial deposits Qls - Landslide deposits (Holocene to late Pleistocene): A heterogeneous assemblage during previous glacial stages.
<br />PROJECT:
<br />Commercially important coal beds occur in the lower part of the formation. The or bedrock, may include some wind -blown (eolian) material„ and may be easily of unconsolidated soil and /or rock formed by slow to rapid downward and outward Qda - Debris - avalanche deposits (Holocene): Unsorted mixtures of soil and rock ELK CREEK M /NE
<br />formation forms very steep slopes which are subject to rockfalls and other mass- eroded if protective vegetation is removed, mass movement in response to gravitational stress. These deposits, which include material formed by their generally sudden and rapid downslope movement and
<br />wasting processes. In many places these steep slopes are stable. earthflows, usually form an irregular, hummocky topography and may have an deposition. Usually formed during periods of rainfall, the deposits generally
<br />Km ManCOS Shale (late Cretaceous): Qagy - Younger alluvial gravels (late Pleistocene): Poorly sorted, rounded to subrounded, associated main scarp. Relative age of the deposits is noted by subscripts (1 is produce a relatively small, elongate rise that may extend out to gently sloping DRAWING TITLE:
<br />unconsolidated pebbles and cobbles in a matrix of sand and silt. These gravels vary the youngest). Cis, deposits most likely were formed during the Holocene and QIS 2 areas below the steep slopes from which the materials originate.
<br />A dark brown to gray laminated silty shale which is prone to erosion and mass greatly in composition because of local source conditions aind they cap the first and QIs3 deposits probably were formed during the Wisconsin glacial stage. /�
<br />wasting especially where mantled by thin colluvium. The shale locally contains well - defined terrace above modern streams. Sheet flooding, erosion, and local Qsfc1,2,3 - Slope- failure - complex (unit) deposits (Holocene to late Pleistocene): REGIONAL GEOL OG Y1/H YDROL OG Y
<br />swelling clays (montmorillonite) and water corrosive to concrete. Flash floods swelling soils are important geologic hazards associated wiflh these gravels. Qmf - Mudflow deposits (Holocene): Clay and fine- grained debris that may include larger Unsorted mixtures of soil and rock material formed by various mass - wasting
<br />and mudflows occur along drainages that traverse the Mancos Shale. rock fragments incorporated into the debris during downslope movement of the wet, processes including landslides, earthflows, mudflows, soil creep, and debris
<br />Qagm - Middle alluvial gravels (middle Pleistocene): Poorly sorted, rounded to subrounded, viscous mass of soil and rock material. The deposits have a youthful physiography avalanches. Not all of these processes occur within a specific deposit and the SCALE
<br />poorly consolidated gravels in a fine- grained matrix. These gravels have a better developed characterized by a gently undulating topography with an incised, braided drainage age of movement may vary with a particular area. The general age of the unit is
<br />soil profile and have a greater amount of weathered igneous -rock fragments than the younger network. With decreasing viscosity during movement the deposits grade to fluvial noted by subscripts (1 is the youngest). 2000' 0 2000' 4000' Sheet 10f 1 Sheets
<br />alluvial gravels. Middle gravels include alluvial -fan and river- terrace materials, form nearly sediments and with increasing viscosity grade to slow- moving earthflows. I ` M W SCALE: DRAWING No.
<br />planar surfaces situated at two or more levels, and are subjject to sheet flooding and erosion.
<br />CONTOUR INTERVAL 40 FT. I as Shown 2.04 -M2
<br />
|