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0'-5' SOIL/OVERBURDEN
<br />15-20'
<br />SAND/GRAVEL
<br />POND RECLAMATION
<br />MINING HIGHWALL
<br />6" TOP SOIL
<br />HISTORIC GROUND
<br />HISTORIC GROUND
<br />OVERBURDEN BACKFILL
<br />3'
<br />1'
<br />6" TOPSOIL
<br />&�, ,-MINING SLOPE
<br />N.T.S.
<br />MINING HIGHWALL-
<br />OVERBURDEN
<br />BACKFILL RECLAMATION
<br />SURFACE
<br />GRADED TO DRAIN
<br />4:1 SLOPE TO MEET 4:1 OR SHALLOWER SLOPE
<br />GRADE AT TOP OF F WIDTH & GRADIENT VARIES
<br />BANK. UPLAND SEED
<br />TS
<br />SHORELINE/WETLAND RECLAMATION
<br />- N.T.S.
<br />POND LINER NOTES:
<br />1. PRIOR TO CONSTRUCTION, OVERBURDEN AND CLAYSTONE MATERIAL TESTING SHALL BE PERFORMED FOR USE IN FINAL DESIGN. THE FOLLOWING
<br />SPECIFICATIONS AND PROCEDURES ARE PROVIDED AS A GENERAL GUIDELINE FOR PERMITTING PURPOSES. FINAL SPECIFICATIONS AND DESIGN
<br />CRITERIA WILL BE DEVELOPED DURING THE FINAL DESIGN PROCESS.
<br />2. EACH LAYER OF FILL SHALL BE SCARIFIED TO ALLOW PROPER BONDING BETWEEN LAYERS.
<br />3. DENSITY AND MOISTURE CONTENT TESTING SHALL BE PERFORMED AT A RATE OF 1 TEST FOR EACH 2,000 YARDS PLACED.
<br />4. ALL CLAY LINER MATERIAL SHALL BE COMPACTED TO A MINIMUM 95% ASTM -D698-78 STANDARD PROCTOR AT +2% OF OPTIMUM MOISTURE CONTENT.
<br />5. NO LINER MATERIAL SHALL BE PLACED IN THE LINER SLOPE WHILE EITHER THE MATERIAL, EMBANKMENT, OR FOUNDATION IS FROZEN.
<br />6. NO ORGANIC MATERIAL SHALL BE PLACED IN THE LINER SLOPE.
<br />7. EACH LAYER OR LIFT SHALL BE CONSTRUCTED CONTINUOUSLY AND APPROXIMATELY HORIZONTAL FOR THE WIDTH AND LENGTH OF EACH LIFT.
<br />8. LINER MATERIAL SHALL BE COMPOSED OF CLAYEY OVERBURDEN AND WEATHERED CLAYSTONE THAT BREAKS DOWN DURING PROCESSING.
<br />BEDROCK CLAYSTONE MATERIAL MAY BE RIPPED, MOISTURE TREATED, AND ALLOWED TO AIR SLAKE FOR A MINIMUM OF ONE DAY PRIOR TO ITS
<br />PLACEMENT IN THE LINER. LINER MATERIAL IS DEFINED AS MATERIAL HAVING 4 INCH OR SMALLER COBBLE, A MINIMUM OF 50% FINES BY CLAY
<br />WEIGHT PASSING THE US STANDARD 200 SIEVE, AND A PLASTICITY INDEX OF 10% OR GREATER FOR THE PORTION OF MATERIAL FINER THAN THE US
<br />STANDARD 40 SIEVE.
<br />9. SUFFICIENT MOISTURE SHALL BE ADDED AT THE BORROW AREA SO NO MORE THAN 3% ADDITIONAL MOISTURE IS REQUIRED TO BRING ANY LINER
<br />MATERIAL TO SPECIFICATIONS ONCE PLACED IN THE FILL.
<br />10.. LINER MATERIAL SHALL BE PLACED IN MAXIMUM OF 9 -INCH LOOSE LIFTS PRIOR TO COMPACTION.
<br />11.. A CATERPILLAR 815 OR 825 SHEEPSFOOT COMPACTOR (OR EQUIVALENT) WILL BE USED FOR COMPACTING EFFORTS.
<br />12. THE COMPLETED LINER SHALL BE PROTECTED FROM DAMAGE CAUSED BY DESICCATION OR FREEZING TEMPERATURES BY PLACING A MINIMUM OF
<br />12 -INCHES PIT RUN MATERIAL ON THE ENTIRE SLOPE.
<br />&ON • 0
<br />1pyI
<br />300 0 300 600 900
<br />( IN FEET )
<br />1 inch = 300 ft.
<br />LEGEND:
<br />PERMIT BOUNDARY'
<br />MINING HEADWALL
<br />PROPOSED HAUL ROAD
<br />APPLY WETLAND
<br />AVERAGE NORMAL
<br />AND UPLAND
<br />GROUNDWATER
<br />6" TOPSOIL SEED
<br />SURFACE
<br />rate will be doubled.
<br />EXISTING GAS LINE
<br />AVERAGE NORMAL
<br />EXISTING OVERHEAD ELECTRIC
<br />0HE
<br />EXISTING EASEMENT
<br />WATER SURFACE
<br />- - -
<br />-- --4880. -
<br />4't
<br />---4700--
<br />----4700--
<br />Z
<br />4880
<br />BACKFILL
<br />4700 -
<br />0
<br />� J
<br />4
<br />a
<br />0
<br />SHORELINE WETLAND BENCH
<br />SLOPE TO
<br />MEET GRADE
<br />TS
<br />SHORELINE/WETLAND RECLAMATION
<br />- N.T.S.
<br />POND LINER NOTES:
<br />1. PRIOR TO CONSTRUCTION, OVERBURDEN AND CLAYSTONE MATERIAL TESTING SHALL BE PERFORMED FOR USE IN FINAL DESIGN. THE FOLLOWING
<br />SPECIFICATIONS AND PROCEDURES ARE PROVIDED AS A GENERAL GUIDELINE FOR PERMITTING PURPOSES. FINAL SPECIFICATIONS AND DESIGN
<br />CRITERIA WILL BE DEVELOPED DURING THE FINAL DESIGN PROCESS.
<br />2. EACH LAYER OF FILL SHALL BE SCARIFIED TO ALLOW PROPER BONDING BETWEEN LAYERS.
<br />3. DENSITY AND MOISTURE CONTENT TESTING SHALL BE PERFORMED AT A RATE OF 1 TEST FOR EACH 2,000 YARDS PLACED.
<br />4. ALL CLAY LINER MATERIAL SHALL BE COMPACTED TO A MINIMUM 95% ASTM -D698-78 STANDARD PROCTOR AT +2% OF OPTIMUM MOISTURE CONTENT.
<br />5. NO LINER MATERIAL SHALL BE PLACED IN THE LINER SLOPE WHILE EITHER THE MATERIAL, EMBANKMENT, OR FOUNDATION IS FROZEN.
<br />6. NO ORGANIC MATERIAL SHALL BE PLACED IN THE LINER SLOPE.
<br />7. EACH LAYER OR LIFT SHALL BE CONSTRUCTED CONTINUOUSLY AND APPROXIMATELY HORIZONTAL FOR THE WIDTH AND LENGTH OF EACH LIFT.
<br />8. LINER MATERIAL SHALL BE COMPOSED OF CLAYEY OVERBURDEN AND WEATHERED CLAYSTONE THAT BREAKS DOWN DURING PROCESSING.
<br />BEDROCK CLAYSTONE MATERIAL MAY BE RIPPED, MOISTURE TREATED, AND ALLOWED TO AIR SLAKE FOR A MINIMUM OF ONE DAY PRIOR TO ITS
<br />PLACEMENT IN THE LINER. LINER MATERIAL IS DEFINED AS MATERIAL HAVING 4 INCH OR SMALLER COBBLE, A MINIMUM OF 50% FINES BY CLAY
<br />WEIGHT PASSING THE US STANDARD 200 SIEVE, AND A PLASTICITY INDEX OF 10% OR GREATER FOR THE PORTION OF MATERIAL FINER THAN THE US
<br />STANDARD 40 SIEVE.
<br />9. SUFFICIENT MOISTURE SHALL BE ADDED AT THE BORROW AREA SO NO MORE THAN 3% ADDITIONAL MOISTURE IS REQUIRED TO BRING ANY LINER
<br />MATERIAL TO SPECIFICATIONS ONCE PLACED IN THE FILL.
<br />10.. LINER MATERIAL SHALL BE PLACED IN MAXIMUM OF 9 -INCH LOOSE LIFTS PRIOR TO COMPACTION.
<br />11.. A CATERPILLAR 815 OR 825 SHEEPSFOOT COMPACTOR (OR EQUIVALENT) WILL BE USED FOR COMPACTING EFFORTS.
<br />12. THE COMPLETED LINER SHALL BE PROTECTED FROM DAMAGE CAUSED BY DESICCATION OR FREEZING TEMPERATURES BY PLACING A MINIMUM OF
<br />12 -INCHES PIT RUN MATERIAL ON THE ENTIRE SLOPE.
<br />&ON • 0
<br />1pyI
<br />300 0 300 600 900
<br />( IN FEET )
<br />1 inch = 300 ft.
<br />LEGEND:
<br />PERMIT BOUNDARY'
<br />--
<br />PROPOSED HAUL ROAD
<br />Blue Grama - ------
<br />Alfalfa
<br />PROPOSED MINING LIMITS
<br />TOTAL
<br />EXISTING PARCELS
<br />*Application rate is for drill seeding.
<br />EXISTING DITCH
<br />rate will be doubled.
<br />EXISTING GAS LINE
<br />GAS - -
<br />EXISTING OVERHEAD ELECTRIC
<br />0HE
<br />EXISTING EASEMENT
<br />- - - - - - -
<br />EXISTING 5 FOOT CONTOUR
<br />-- --4880. -
<br />EXISTING 25 FOOT CONTOUR
<br />---4700--
<br />----4700--
<br />PROPOSED 5 FOOT CONTOUR
<br />PROPOSED
<br />4880
<br />PROPOSED 25 FOOT CONTOUR
<br />4700 -
<br />INCITES:
<br />1. THE PROPOSED FINAL LAND USE FOR THE IRWIN/THOMAS MINE IS GENERAL AGRICULTURE.
<br />2. RECLAMATION PLAN MAP ILLUSTRATES CONDITIONS WHEN ADEQUATE QUANTITIES OF
<br />OFF-SITE BACKFILL MATERIAL IS AVAILABLE AND A PERMANENT SOURCE OF WATER FOR
<br />LONG-TERM AUGMENTATION OF EXPOSED GROUNDWATER HAS BEEN OBTAINED. MINE
<br />CELLS WILL BE BACKFILLED TO CREATE UPLAND, PONDS, AND WETLAND AREAS.
<br />3. ALL SLOPES SHALL BE GRADED TO 3H:1V OR FLATTER. ROUGH GRADING WILL ESTABLISH
<br />FINAL ELEVATIONS, SLOPES, AND TRANSITIONS. TRANSITIONS BETWEEN UPLANDS,
<br />WETLANDS, AND POND SLOPES SHALL BE GRADED WITH A SMOOTH, GRADUAL
<br />TOPOGRAPHY.
<br />4. FINAL GRADING WILL INCLUDE ADDITION OF TOPSOIL AND SURFACE PREPARATION FOR
<br />REVEGETATION. SPECIAL ATTENTION SHALL BE GIVEN TO TRANSITIONS FROM RECLAIMED
<br />AREAS TO UNDISTURBED LAND.
<br />5, ALL AVAILABLE TOPSOIL AND OVERBURDEN MATERIAL WILL BE USED FOR BACKFILLING
<br />AND RECLAMATION.
<br />6. THE GROWTH MEDIUM FOR REVEGETATION WILL BE A COMBINATION OF OVERBURDEN AND
<br />TOPSOILS.
<br />7. TWO DIFFERENT MIXES OF UPLAND GRASSES WILL BE USED IN AREAS THAT WILL NOT
<br />EXPERIENCE PERIODIC FLOODING, SEASONAL GROUNDWATER, OR OTHER MOIST SOIL
<br />CONDITIONS. ONE SEED MIX WILL BE USED SIMPLY FOR QUICK SOIL STABILIZATION AND
<br />EROSION CONTROL. THIS MIX WILL MAINLY BE USED IN MA1 WHERE FURTHER
<br />AGRICULTURAL OR OTHER DEVELOPMENT IS EXPECTED TO OCCUR FOLLOWING PERMIT
<br />RELEASE. THE SECOND GRASS SEED MIX FOR AREAS LEFT AS OPEN SPACE IS COMPOSED
<br />OF A LONG LASTING AND REGENERATING NATIVE UPLAND SEED MIXTURE.
<br />Application Rate
<br />Upland Grass Seed - Soil Stabilization (#PLS/acre)
<br />Intermediate Wheatgrass
<br />3
<br />-0.75
<br />Blue Grama - ------
<br />Alfalfa
<br />_ -_
<br />0.75
<br />TOTAL
<br />4.5
<br />*Application rate is for drill seeding.
<br />If seed is to be broadcast, the application
<br />rate will be doubled.
<br />-_
<br />Application Rate*
<br />Upland Grass Seed - Native Open Space (#PLS/acre)
<br />Western Wheatgrass
<br />4
<br />Blue grama
<br />I
<br />Side -oats grama
<br />- 1.5
<br />Sand dropseed
<br />- 0.5 _-
<br />Switchgrass
<br />- _
<br />I
<br />Indian Rice_grass _ _
<br />TO_TA_ L ---------
<br />- _ 1
<br />--� - - 9 -- - -
<br />*Application rate is for drill seeding.
<br />rate will be doubled.
<br />If seed is to be broadcast, the application
<br />_
<br />8. IN AREAS WHERE WETLANDS COULD POTENTIALLY BE DEVELOPED, THE SEED MIX WILL BE
<br />MODIFIED TO INCLUDE MORE TRANSITION AND WETLAND GRASSES AND GRASS -LIKE
<br />SPECIES. THESE SEED MIXES, ESPECIALLY IF STANDING WATER OR SATURATED SOILS
<br />EXIST DURING PLANTING, WILL LIKELY NEED TO BE BROADCAST.
<br />Grass Seed
<br />Application Rate
<br />(#PLS/acre)
<br />2.5
<br />2.5
<br />1.5
<br />1.5
<br />1.5
<br />1.5
<br />- 11
<br />eeding. If seed is to be broadcast, the application
<br />9. UPLAND GRASS SEED WILL BE PLANTED WITH A DRILL EQUIPPED WITH DEPTH BANDS AND
<br />PRESS WHEELS. THE SEEDED AREA WILL THEN BE COVERED WITH CERTIFIED WEED -LESS
<br />STRAW'MULCH AT A RATE OF 2,000 POUNDS PER ACRE. THE STRAW WILL BE CRIMPED INTO
<br />THE SOIL TO CONTROL EROSION UNTIL THE GRASS BECOMES ESTABLISHED.
<br />10. DRILL SEEDING IS THE PREFERRED METHOD FOR REVEGETATION. IF BROADCAST
<br />SEEDING IS NECESSARY ON MOIST SOILS, STEEP SLOPES, OR IN EXCESSIVELY ROCKY
<br />AREAS, SUCCESS CAN BE ENCOURAGED BY BROADCASTING ONTO GROWTH MEDIUM THAT
<br />IS VERY LOOSE. IF THE SEED IS BROADCAST IN THOSE CIRCUMSTANCES, THEN THE
<br />SEEDED AREA WILL BE DRAGGED TO HELP BURY THE SEED.
<br />11. PERIODIC INSPECTION FOR NOXIOUS WEEDS, AT LEAST ONCE A YEAR EARLY IN THE
<br />SEASON, WILL BE DONE AS PART OF A WEED MANAGEMENT PLAN.
<br />12. THE MINE OFFICE/SCALE HOUSE TRAILER AND ANY OTHER STRUCTURES ASSOCIATED
<br />WITH MINING WILL BE REMOVED FROM THE SITE DURING FINAL RECLAMATION ACTIVITIES.
<br />13. BEST MANAGEMENT PRACTICES WILL BE USED TO CONTROL EROSION AND STORMWATER
<br />SUSPENDED SEDIMENT RUNOFF FROM THE SITE DURING RECLAMATION ACTIVITIES.
<br />CALL UTILITY NOTIFICATION CENTER OF
<br />COLORADO
<br />y, .
<br />SPP X018
<br />Know what's below.
<br />Call before you dig. [)rjISIOtjOF RECLAMATION
<br />CALL 2 BUSINESS DAYS IN ADVANCE BEFORE MINING & SAFETY
<br />YOU DIG, GRADE, OR EXCAVATE FOR THE
<br />MARKING OF UNDERGROUND MEMBER UTILITIES.
<br />4-1
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<br />Date: October, 2018
<br />Job No: 590-008
<br />Drawn: C. Snowdon
<br />Design: B. SCHENDERLEIN
<br />Checked: B. SCHENDERLEIN
<br />Scale: 1 " = 200'
<br />Sheet:
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<br />Date: October, 2018
<br />Job No: 590-008
<br />Drawn: C. Snowdon
<br />Design: B. SCHENDERLEIN
<br />Checked: B. SCHENDERLEIN
<br />Scale: 1 " = 200'
<br />Sheet:
<br />4 of:4
<br />
|