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TEMPORARY IMPOUNDMENT #1 DAM CROSS SECTION SCALE 111 = 101 MAX. WATER LEVEL 12 CREST OF DAM Elev. 8265 ELEVATION During a 25, -Year 24 -Hour Event Elev. 8264 8268 -_ EMERGENCY SPILLWAY Elev. 826 9.4 ACRE -FT. I 8266 - s26a -- RIP -RAP at EMERGENCY SPILLWAY 8262 - 8260 - 2 2 8258 - I 6256 - 8254 - I�1 -1 1 =111= 111 =111- III =111, BASE OF DAM Elev. 8254 POND 4 EMERGENCY SPI LLWAY SCALE I° = 51 mj 11 L_ 1 2 MAX. HEIGHT =1.85r RIP -RAP f 61CFS MAX. WATER LEVEL During a 25 -Year 24 -Hour Event = 8229.4' M NOTES BASE OF DAMS CLEARED OF TOPSOIL AND ORGANIC MATTER AND SCARIFIED PRIOR TO CONSTRUCTION FACE OF DAMS AND SURROUNDING DISTURBED AREAS WILL BE STABILIZED WITH A VEGETATIVE COVER DAMS CONSTRUCTED OF COHESIVE MATERIAL SELECTED i EL 8202.2' FROM MINE SPOIL AND SUBSOIL IN DAM AREA _° FREEBOARD EMERGENCY SPILLWAYS CONSTRUCTED IN IN-PLACE N EL 8200.0 MATERIAL AND RIP - RAPPED FOR STABILIZATION RIP-RAP TEMPORARY IMPOUNDMENT 41 EMERGENCY SPILLWAY SCALE I"= 51 Imo-- 14.0 =� o EL 8230.0 -I FREEBOARD -EL 8227.0' -- EL 8265.0 'o r _ FREEBOARD EL 8262.5 MAX. HEIGHT RIP -RAP = k45r 8.0 - 41 CFS Max. WATER LEVEL 1 During a 25 -Year 24 -Hour Event FUTURE MINING AREA =8264' R �� W TO NORTHWEST gam.,; - ��, ,1,.� ,•rs x- ��. -� _• CVr 10�/ 839 2" PROBABLE FUT RE COy1 ( / /� I •;B / I l CRUSHING, STOCKPILING A7ICE AND SHOP FACIL IES Ilk V • • 1�, •• ` � 1 �' � , 1 .\i l' _.� 1 tom-- -� � _� „• \ TOPSOIL I -- / \ \STOCKPILE D \\ �; i \ )� N / \\ \ \\ PHASE r \ AREA 111IOU \V v A • IX AROUND) PI (I 7.8 Acres)_,. . Ml. -, ,♦i. � \ -,.. i / / / II�1 ,I. � -- �� _ J , 1 16 lop .re• .re, -��, i A 1 �� /rl ' �� l� �' / OVA 1 PIT ;i�/ % VA .. LIMIT V �� gAv �� X400 i ��1 �� I t If , I 1 BIG i i 3360 SAGEBRUSH / ��i 1 s b350 .,REFERENCE F, «ee AREA - +e //� �� '° ''ad «ko3.:. �/� i.'.'_• - �._,Y // 51 11 SAO i o ECO {CAL = �° + . / STUDY AREA srgkP ILA 0 III< / . x i / . /!' / /',•' o i 9300 90 ,� �,,` \ + IfdIT , 2C 5 \° j 1 PHASE / / 1 ' • \ lY 3 29 -% LY)� -]. Y -3F' .,•. E - / I 1 e'P n� / �. j % � ,".- _-i• // � 1 1 (14.1 Q�f @S) i PHASE e o LU , J, _/ \ / /aes es r3l ` • ►••Oft' mow /e2r.n5 , x. x._ TO M a T ALKALI / -J; i% lI / � 1 !Eii `� fir!`:_ •..i/` j/M / O CR / Nfb OIL WELL SAGEBRUSH J ) M RFACE REFERENCE � OF -WAY AREA / .P B NDARY !� .... / // INS on? r / / --- L�� aw •!p THIS DRAWING WAS PREPARED UNDER MY SUPERVISION AND IS AN ACCURATE REPRESENTATION OF PLANNED RECLAMATION AT THE CANADIAN STRIP MINE AS SPECIFIED BY THE SURFACE \ \1�111p11(1�a1r11 / MINING CONTROL AND RECLC'- Lgi�OF 1977. ry \`�P�E�1 sr )ii °s , RBI ] SEAL Max R.v11QA Colorado lasUt��QtR" No. 17731 DIVERSION DITCH D SECTION (MIN.) SCALE 111 = 21 III =I III _- Il 1111 I I I L MINING AND RECLAMATION SCHEDULE YEAR POND I RECLAIMED UNRECLAIMED ENDING DAM CROSS SECTION ACRES DAM CROSS SECTION (acres) (acres) SCALE 111 = 101 1979 IV (7.7) MAX. WATER SCALE ill= 10 63.0 1980 V (4.0) IV (7.7) to hold 10-Year 24 -Hour Event 60.7 1981 VI (5.95) V (4.0) Elev. 8227 71.9 POND I VI (5.95) IV p (3.85) 3.75 ACRE -FT 8 1-2056-027 - -18'_ FIGURE EMERGENCY SPILLWAY 1983 ADJUSTABLE GATE 20 ADJUSTABLE WEIR (8196 to 8200 Elev.) 8232 - SCALE III= 51 V p (2.1) EMERGENCY SPILLWAY Elev. 8227.0 8230 - I CREST OF DAM Elev. 8202.2 1984 IX (8.9) 1.25 ACRE FT IV p (3.85) 71.1 4- 8228 - Vllp (14.1) - - -- - -- IX (8.9) azzs- 38 5 EMERGENCY SPILLWAY Elev. 8200 - - - ELEVATION 8222 - - IX (17.8) 5.2 RIP RAP 8220 - RIP -RAP 8206 - (ponds) NOTE The rate of reclamattan of Phase IV depends on the amount of overburden that is removed from the stockpile (Phase XI) each year. a21e -_ /60 25.0 111 -Ill = MAX. SEDIMENT MAX. WATER LEVEL 8216 - 8214 - e2oa - Elev. 8196 To Hold 10-Year 24 -Hour Event BASE OF DAM Elev. 8217 -III ELEV. 8222.8 8202 1.5 ACRE -FT. Elev. 8200 _ 8200 - 8198 _ RIP -RAP 8196 - - - - - - - - -- - - - - - 20.0 8194 - MAX. HEIGHT = 1.2 ' @a 731 CFS =II I =111= - - - - - �� 18 111 CULVERT BASE OF DAM Elev. 8194 60% OF MAX. MAX. WATER LEVEL SEDIMENTATION ELEV. 8195.5 During a 25-Year 24 -Hour Event = 8201.2' TEMPORARY IMPOUNDMENT #1 DAM CROSS SECTION SCALE 111 = 101 MAX. WATER LEVEL 12 CREST OF DAM Elev. 8265 ELEVATION During a 25, -Year 24 -Hour Event Elev. 8264 8268 -_ EMERGENCY SPILLWAY Elev. 826 9.4 ACRE -FT. I 8266 - s26a -- RIP -RAP at EMERGENCY SPILLWAY 8262 - 8260 - 2 2 8258 - I 6256 - 8254 - I�1 -1 1 =111= 111 =111- III =111, BASE OF DAM Elev. 8254 POND 4 EMERGENCY SPI LLWAY SCALE I° = 51 mj 11 L_ 1 2 MAX. HEIGHT =1.85r RIP -RAP f 61CFS MAX. WATER LEVEL During a 25 -Year 24 -Hour Event = 8229.4' M NOTES BASE OF DAMS CLEARED OF TOPSOIL AND ORGANIC MATTER AND SCARIFIED PRIOR TO CONSTRUCTION FACE OF DAMS AND SURROUNDING DISTURBED AREAS WILL BE STABILIZED WITH A VEGETATIVE COVER DAMS CONSTRUCTED OF COHESIVE MATERIAL SELECTED i EL 8202.2' FROM MINE SPOIL AND SUBSOIL IN DAM AREA _° FREEBOARD EMERGENCY SPILLWAYS CONSTRUCTED IN IN-PLACE N EL 8200.0 MATERIAL AND RIP - RAPPED FOR STABILIZATION RIP-RAP TEMPORARY IMPOUNDMENT 41 EMERGENCY SPILLWAY SCALE I"= 51 Imo-- 14.0 =� o EL 8230.0 -I FREEBOARD -EL 8227.0' -- EL 8265.0 'o r _ FREEBOARD EL 8262.5 MAX. HEIGHT RIP -RAP = k45r 8.0 - 41 CFS Max. WATER LEVEL 1 During a 25 -Year 24 -Hour Event FUTURE MINING AREA =8264' R �� W TO NORTHWEST gam.,; - ��, ,1,.� ,•rs x- ��. -� _• CVr 10�/ 839 2" PROBABLE FUT RE COy1 ( / /� I •;B / I l CRUSHING, STOCKPILING A7ICE AND SHOP FACIL IES Ilk V • • 1�, •• ` � 1 �' � , 1 .\i l' _.� 1 tom-- -� � _� „• \ TOPSOIL I -- / \ \STOCKPILE D \\ �; i \ )� N / \\ \ \\ PHASE r \ AREA 111IOU \V v A • IX AROUND) PI (I 7.8 Acres)_,. . Ml. -, ,♦i. � \ -,.. i / / / II�1 ,I. � -- �� _ J , 1 16 lop .re• .re, -��, i A 1 �� /rl ' �� l� �' / OVA 1 PIT ;i�/ % VA .. LIMIT V �� gAv �� X400 i ��1 �� I t If , I 1 BIG i i 3360 SAGEBRUSH / ��i 1 s b350 .,REFERENCE F, «ee AREA - +e //� �� '° ''ad «ko3.:. �/� i.'.'_• - �._,Y // 51 11 SAO i o ECO {CAL = �° + . / STUDY AREA srgkP ILA 0 III< / . x i / . /!' / /',•' o i 9300 90 ,� �,,` \ + IfdIT , 2C 5 \° j 1 PHASE / / 1 ' • \ lY 3 29 -% LY)� -]. Y -3F' .,•. E - / I 1 e'P n� / �. j % � ,".- _-i• // � 1 1 (14.1 Q�f @S) i PHASE e o LU , J, _/ \ / /aes es r3l ` • ►••Oft' mow /e2r.n5 , x. x._ TO M a T ALKALI / -J; i% lI / � 1 !Eii `� fir!`:_ •..i/` j/M / O CR / Nfb OIL WELL SAGEBRUSH J ) M RFACE REFERENCE � OF -WAY AREA / .P B NDARY !� .... / // INS on? r / / --- L�� aw •!p THIS DRAWING WAS PREPARED UNDER MY SUPERVISION AND IS AN ACCURATE REPRESENTATION OF PLANNED RECLAMATION AT THE CANADIAN STRIP MINE AS SPECIFIED BY THE SURFACE \ \1�111p11(1�a1r11 / MINING CONTROL AND RECLC'- Lgi�OF 1977. ry \`�P�E�1 sr )ii °s , RBI ] SEAL Max R.v11QA Colorado lasUt��QtR" No. 17731 DIVERSION DITCH D SECTION (MIN.) SCALE 111 = 21 III =I III _- Il 1111 I I I L MINING AND RECLAMATION SCHEDULE YEAR MINING POND 4 RECLAIMED UNRECLAIMED ENDING DAM CROSS SECTION ACRES 1 (acres) (acres) SCALE 111 = 101 1979 IV (7.7) MAX. WATER LEVEL 63.0 1980 V (4.0) IV (7.7) to hold 10-Year 24 -Hour Event 60.7 1981 VI (5.95) V (4.0) Elev. 8227 71.9 1982 VII (7.05) VI (5.95) IV p (3.85) 3.75 ACRE -FT 8 1-2056-027 - -18'_ FIGURE V p (6.0) ELEVATION 1983 ADJUSTABLE GATE VII (7.05) CREST OF DAM Elev. 8230.0 8232 - MAX. SEDIMENT With opening assembly V p (2.1) EMERGENCY SPILLWAY Elev. 8227.0 8230 - Elev. 8223.5 VI (11.9) 1984 IX (8.9) 1.25 ACRE FT IV p (3.85) 71.1 8228 - Vllp (14.1) - - -- - -- IX (8.9) azzs- 38 5 2 8224 - - - - XI (21.8) 8222 - - IX (17.8) 5.2 RIP RAP 8220 - RIP -RAP X (11.0) (ponds) NOTE The rate of reclamattan of Phase IV depends on the amount of overburden that is removed from the stockpile (Phase XI) each year. a21e -_ /60 111 -Ill = tll =Ill - II =Ill 8216 - 8214 - % OF MAX. BASE OF DAM Elev. 8217 SEDIMENTION ELEV. 8222.8 TEMPORARY IMPOUNDMENT #1 DAM CROSS SECTION SCALE 111 = 101 MAX. WATER LEVEL 12 CREST OF DAM Elev. 8265 ELEVATION During a 25, -Year 24 -Hour Event Elev. 8264 8268 -_ EMERGENCY SPILLWAY Elev. 826 9.4 ACRE -FT. I 8266 - s26a -- RIP -RAP at EMERGENCY SPILLWAY 8262 - 8260 - 2 2 8258 - I 6256 - 8254 - I�1 -1 1 =111= 111 =111- III =111, BASE OF DAM Elev. 8254 POND 4 EMERGENCY SPI LLWAY SCALE I° = 51 mj 11 L_ 1 2 MAX. HEIGHT =1.85r RIP -RAP f 61CFS MAX. WATER LEVEL During a 25 -Year 24 -Hour Event = 8229.4' M NOTES BASE OF DAMS CLEARED OF TOPSOIL AND ORGANIC MATTER AND SCARIFIED PRIOR TO CONSTRUCTION FACE OF DAMS AND SURROUNDING DISTURBED AREAS WILL BE STABILIZED WITH A VEGETATIVE COVER DAMS CONSTRUCTED OF COHESIVE MATERIAL SELECTED i EL 8202.2' FROM MINE SPOIL AND SUBSOIL IN DAM AREA _° FREEBOARD EMERGENCY SPILLWAYS CONSTRUCTED IN IN-PLACE N EL 8200.0 MATERIAL AND RIP - RAPPED FOR STABILIZATION RIP-RAP TEMPORARY IMPOUNDMENT 41 EMERGENCY SPILLWAY SCALE I"= 51 Imo-- 14.0 =� o EL 8230.0 -I FREEBOARD -EL 8227.0' -- EL 8265.0 'o r _ FREEBOARD EL 8262.5 MAX. HEIGHT RIP -RAP = k45r 8.0 - 41 CFS Max. WATER LEVEL 1 During a 25 -Year 24 -Hour Event FUTURE MINING AREA =8264' R �� W TO NORTHWEST gam.,; - ��, ,1,.� ,•rs x- ��. -� _• CVr 10�/ 839 2" PROBABLE FUT RE COy1 ( / /� I •;B / I l CRUSHING, STOCKPILING A7ICE AND SHOP FACIL IES Ilk V • • 1�, •• ` � 1 �' � , 1 .\i l' _.� 1 tom-- -� � _� „• \ TOPSOIL I -- / \ \STOCKPILE D \\ �; i \ )� N / \\ \ \\ PHASE r \ AREA 111IOU \V v A • IX AROUND) PI (I 7.8 Acres)_,. . Ml. -, ,♦i. � \ -,.. i / / / II�1 ,I. � -- �� _ J , 1 16 lop .re• .re, -��, i A 1 �� /rl ' �� l� �' / OVA 1 PIT ;i�/ % VA .. LIMIT V �� gAv �� X400 i ��1 �� I t If , I 1 BIG i i 3360 SAGEBRUSH / ��i 1 s b350 .,REFERENCE F, «ee AREA - +e //� �� '° ''ad «ko3.:. �/� i.'.'_• - �._,Y // 51 11 SAO i o ECO {CAL = �° + . / STUDY AREA srgkP ILA 0 III< / . x i / . /!' / /',•' o i 9300 90 ,� �,,` \ + IfdIT , 2C 5 \° j 1 PHASE / / 1 ' • \ lY 3 29 -% LY)� -]. Y -3F' .,•. E - / I 1 e'P n� / �. j % � ,".- _-i• // � 1 1 (14.1 Q�f @S) i PHASE e o LU , J, _/ \ / /aes es r3l ` • ►••Oft' mow /e2r.n5 , x. x._ TO M a T ALKALI / -J; i% lI / � 1 !Eii `� fir!`:_ •..i/` j/M / O CR / Nfb OIL WELL SAGEBRUSH J ) M RFACE REFERENCE � OF -WAY AREA / .P B NDARY !� .... / // INS on? r / / --- L�� aw •!p THIS DRAWING WAS PREPARED UNDER MY SUPERVISION AND IS AN ACCURATE REPRESENTATION OF PLANNED RECLAMATION AT THE CANADIAN STRIP MINE AS SPECIFIED BY THE SURFACE \ \1�111p11(1�a1r11 / MINING CONTROL AND RECLC'- Lgi�OF 1977. ry \`�P�E�1 sr )ii °s , RBI ] SEAL Max R.v11QA Colorado lasUt��QtR" No. 17731 DIVERSION DITCH D SECTION (MIN.) SCALE 111 = 21 III =I III _- Il 1111 I I I L MINING AND RECLAMATION SCHEDULE YEAR MINING MINING RECLAIMED UNRECLAIMED ENDING PHASE STARTED PHASE COMPLETED PHASE (acres) ACRES 1 (acres) (acres) 7/29/81 4 1979 IV (7.7) III (8.5) 1 (9.3) 63.0 1980 V (4.0) IV (7.7) II (6.3) 60.7 1981 VI (5.95) V (4.0) III (8.5) 71.9 1982 VII (7.05) VI (5.95) IV p (3.85) 75.0 8 1-2056-027 WO NO FIGURE V p (6.0) 1983 VIII (7.9) VII (7.05) IV p (3.85) 72.2 V p (2.1) VI (11.9) 1984 IX (8.9) VIII (7.9) IV p (3.85) 71.1 Vllp (14.1) 1985 - IX (8.9) IV p (3.85) 38 5 VIII (15.8) XI (21.8) 1986 - IX (17.8) 5.2 X (11.0) (ponds) NOTE The rate of reclamattan of Phase IV depends on the amount of overburden that is removed from the stockpile (Phase XI) each year. p = Partial IN -MINE DRAINAGE DITCH SECTION (MIN) SCALE III= 21 6r III I I (= -1 I.s Lu -`III ( ( % -MINE of r H \ \ PHASE i- ♦ i 825 (9.3 i _ 1 SINGLE PHASE POWEjt PON 1 LINE C � I G' l - - - - - -- -- - -- ) PH X ; (6.3 Acres ) ' TOPSOILS \ � N . N p ; w 1 �. - ---- -------- - -- - -- - --------- 4- - - - -- -- x EXPLOSIVE TRADED AREA 240 a ADDED (.2 acres -'79) 1 P SE y� �+ OVERBURDEN ST PI IF ilk .. -* .. � fx, ✓VV era _ r 1 PHAS I A / . / X (ILO Acres) OVERBUR STfYCK PI L CRUSHED COAL i 1 I (i STORAGE + .,.,. K DUMP + a GRLANER ,^ (15.4 Wires ri e a !Y, - TRADED AREA + HAUL ROAD DELETED TO WALDEN �ti4 J (.2acres -79) OFFICE / J C ' .q 1 _ - -4 ♦ I �_ �^ /N -M /NE 4 I CULVERTS + bo �' f i PHASE or (8.0 Acres) - ��' �tb 8 IN-M /NE V+ D ,Ch N PIT SUMP I , I i BOUNDARY OF g0. DISTURBED AREA POND 2 x > PRESENT PERMIT, E: OUNDARY '! POND 3 fi //ORIGINAL M & T ROAD /� \ ✓ L / 111, J�° � ` • ��_ - / sr 3 "j� .CULVERT \ �- ,- °y +o \/� I / • , _ -.TT9 '\ i FEDERAL COAL LEASE BOUNDARY _I OAL BOUNDA � -=-� # C -27931 J /.... / / l -" ' Frw 8,9062 r0 n �� `'i / � f /" Eq. 8216 93 -✓ , 1i l j R 78 W LEGEND -> DITCH / BERM TO SEDIMENT POND DIVERSION DITCH ��' ' --► FREE FLOW OF DIVERTED WATER POST- RECLAMATION DRAINAGE i. PEAK WATER LEVEL IN POND CULVERT ------------ PIT LIMIT POST- RECLAMATION CONTOUR (10'interval) -x -x- FENCE N R'EIiII V E0 JUL 16 1982 MINED (.Atiln RFCI- AMATION Colo. Dept. of IiIatural Resources WYOMING FUEL COMPANY CANADIAN STRIP MINE Jackson County, Colorado I(M IN ING AND RECLAMATION PLAN REV DESCRIPTION BY DATE REV DESCRIPTION BY I DATE 1 am ross, Sections, an sed MRL 7/29/81 4 BLM Right -of -Way Changed KMK 10/5/81 2 Dam Sedimenllon Elev. revised MRL 9/2/81 5 CROSS SECTION A -A ADDED KMK 10/28/81 3 Dam Cross Sections and MRL 9/14/81 SCALE 12400 C=200' 200' 20C loo 0 200 400 600 8 1-2056-027 WO NO FIGURE FEET DRAWN BY SADavis PREPARED BY: KMKolin DATE Mar. 30,1981 1 111111 VIII VIII VIII VIII VIII IIIIIIII