2018-10-19_PERMIT FILE - M2016054 ‎(4)‎

• Permit No: M2016054
• IBM Index Class Name: Permit File
• Doc Date: 10/19/2018
• Doc Name Note: Map C-4
• Doc Name: Adequacy Review Response
• From: Blue Earth Solutions
• To: DRMS
• Email Name: AME
• Email Name: MAC
• Media Type: M
• Archive: No

m
NORTH
300 0 300 600 900
{ IN FEET )
1 Inch = 300 ft.
LEGEND:
PERMIT BOUNDARY
EXISTING PARCELS
EXISTING DITCH CENTERLINE
EXISTING 5 FOOT CONTOUR
EXISTING 25 FOOT CONTOUR
EXISTING MONITORING WELL LOCATION
TEMPORARY' TOPSOIL/OVERBURDEN
STOCKPILE USED IN CONCURRENT
RECLAMATION
TOPSOIL/OVtERBURDEN STOCKPILE
NOTES:
I. THE PROPOSED IRWIN/THOMAS MINE PERMIT AREA IS COMPRISED OF 4 DISTINCT MINING AREAS
SEPARATED BY COLORADO HIGHWAY 119, ST. VRAIN CREEK, AND THE BURLINGTON NORTHERN AND
SANTA FIE (BNSF) RAILROAD. MINING AREA 1 IS LOCATED SOUTH OF HWY 119, MINING AREA 2 IS
NORTH OF HWY 119 AND SOUTH OF ST. VRAIN CREEK, MINING AREA 3 IS NORTH OF ST. VRAIN CREEK
AND SOUTH OF THE BNSF RAILROAD, AND MINING AREA 4 IS NORTH OF THE RAILROAD.
2. THE PROPOSED PERMIT BOUNDARY ENCOMPASSES APPROXIMATELY 295.6 ACRES WITH ONLY
ABOUT 138 ACRES CURRENTLY PLANNED FOR MINING. HOWEVER, THE AFFECTED LAND BOUNDARY
ESSENTIALLY FOLLOWS THE PERMIT BOUNDARY TO ALLOW FOR RECLAMATION ACTIVITIES AND
FUTURE (POTENTIAL MINING OPERATIONS.
3. AREAS NIOT DISTURBED BY MINING MAY BE DISTURBED BY ACCESS ROADS, MATERIAL CONVEYING,
STOCKPIILES, OR OTHER MINING RELATED ACTIVITIES. THE REMAINING AREA WILL CONSIST OF
SETBACKS AND ROAD AND UTILITY RIGHT-OF-WAYS.
4. SETBACKS FROM THE MINE PIT TOP OF SLOPE TO THE PROPOSED PERMIT BOUNDARY OR MAN-MADE
STRUCTURES NOT OWNED BY THE APPLICANT WILL BE 50 FEET OR GREATER.
5, ITEMS OVNNED BY THE APPLICANT OR PROPERTY OWNER LOCATED WITHIN THE PERMIT AREA SUCH
AS UN -IMPROVED ROADS, IRRIGATION LATERALS, FENCES, WATER WELLS AND ASSOCIATED PUMPS,
AND OTHIER STRUCTURES MAY BE REMOVED OR RELOCATED DURING MINING AND RECLAMATION.
6. TEST PITS HAVE VERIFIED THAT COMMERCIAL DEPOSITS OF SAND AND GRAVEL EXIST UP TO 25 FEET
BELOW THE SURFACE OF THE GROUND.
7. MINING IS EXPECTED TO ENCOUNTER GROUNDWATER WITHIN FIVE FEET OF THE GROUND SURFACE.
THE DEPOSIT WILL BE DRY MINED USING DEWATERING TRENCHES AND PUMPS.
8. DURING RAINING ADJACENT TO THE ST. VRAIN CREEK RIPARIAN AREA, PRECAUTIONS WILL BE TAKEN
TO NOT DISTURB THE CREEK CHANNEL AND DESIRABLE VEGETATION.
9. A MINE OFFICE/SCALE HOUSE TRAILER WILL BE ESTABLISHED NEAR SITE ENTRANCES BOTH NORTH
AND SOUTH OF ST. VRAIN CREEK.
10. BEST MAINAGEMENT PRACTICES WILL BE USED TO LIMIT DISCHARGE OF STORMWATER AND
SEDIMENT ONTO ADJACENT PROPERTIES AND WATERWAYS.
MINING SEQUENCE NOTES:
1. IN MAI, MINING CELL 1A SHALL BE MINED FIRST. THE SOUTHWEST SIDE OF THE CELL SHALL EXTEND
A MINIMUM OF 500 FEET FROM THE ST. VRAIN CREEK PEDESTRIAN PATH. THE CELL SHALL BE MINED
AND BACIKFILLED PRIOR TO ADDITIONAL MAI MINING WITHIN THE ST. VRAIN CREEK JURISDICTIONAL
100 -YEAR; FLOODPLAIN. MINING AND BACKFILLING OF CELL 1A SHALL OCCUR DURING THE NON -FLOOD
PRONE SEASON OF OCTOBER THROUGH APRIL.
2. THE SCALE HOUSE AND STAGING AREA IN MAI MAY BE ESTABLISHED ON THE MINED AND BACKFILLED
AREA WITHIN CELL IA.
3. IN MA2 AND MA3, THE AREAS OF THE MINING CELLS CLOSEST TO ST. VRAIN CREEK SHALL BE MINED
FIRST. THE MINE CELL AREAS WITHIN 200 FEET OF THE CREEK SHALL BE MINED AND BACKFILLED
DURING THE NON -FLOOD SEASON OF OCTOBER THROUGH APRIL.
4. PRIOR TO AFFECTING LAND WITHIN MA2, MA3, OR MA4, THE DIVISION OF RECLAMATION, MINING AND
SAFETY (THE DIVISION) SHALL BE NOTIFIED IN WRITING AND APPROPRIATE PERMIT REVISIONS
CONSISTENT WITH THE ALTERNATIVE MINING AND RECLAMATION PLANS SHALL BE SUBMITTED FOR
APPROVAL.
5. IF COMPLETED MINE CELL SIDE SLOPES ARE TO BE WITHIN A RESERVOIR OR POND, THE DIVISION
SHALL BE NOTIFIED FOR INSPECTION PRIOR TO FILLING THE RESERVOIR/POND WITH WATER.
6. IF SOIL TESTING IS NECESSARY FOR RECLAMATION, TEST RESULTS AND ANY PROPOSED SOIL
AMENDMENTS SHALL BE SUBMITTED TO THE DIVISION.
7. PRIOR TO MINING IN MA3 AND MA4, MONITORING WELLS SHALL BE INSTALLED AND MONITORED FOR
FIVE QUAIRTERS TO ESTABLISH BASELINE GROUNDWATER ELEVATIONS.
8. IF OFF-SITE BACKFILL MATERIAL IS TO BE IMPORTED, THE DIVISION SHALL BE NOTIFIED ACCORDING
TO THE MIINERAL RULES AND REGULATIONS RULE 3.1.5(9)
VEGETATE SIIDE
FOR STABILIZATION
1'
EXISTIN G
GROUND
18'12' 18'
3'
TYPICAL BERMING SECTION
50' MIN. —►1 I.*—
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AGGREGATE
TYPICAL MINING SECTION
AT PERMIT BOUNDARY
VEGETATE SIDE
FOR STABILIZATION
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SCHENDERLEIN
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SCHENDERLEIN
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Date:
October, 2018
Job No:
590-008
Drawn:
C. Snowdon
DeSI n: B.
SCHENDERLEIN
Checked: B.
SCHENDERLEIN
Scale:
1 " = 300'
Sheet:
4
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