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2 " -4" <br />DEEP <br />FURROWS 2" TO 4" DEEP ON 6" CENTERS <br />WITH 6" MAXIMUM SPACING PARALLEL <br />TO CONTOURS OF SLOPE <br />STEEP SLOPES (3:1 OR STEEPER) <br />PROVIDE A ROUGH SOIL SURFACE WITH HORIZONTAL <br />DEPRESSIONS. CAN BE COMPLETED WITH A TILLAGE OR <br />OTHER EQUIPMENT WITH SIMILAR EFFICIENCY. <br />LEAVE SLOPES IN A ROUGHENED CONDITIONED WITHOUT <br />FINE GRADING. HOWEVER, SURFACE ROUGHENING SHOULD <br />BE PERFORMED AFTER FINE GRADING. ROUGHENING <br />CANNOT BE USED AS A CBMP IF SANDY OR ROCKY SOIL <br />IS PRESENT. <br />NOTES: <br />1. ANY LAND DISTURBANCE THAT REMAINS INACTIVE FOR 14 DAYS OR MORE THAN 7 DAYS AFTER GRADING IS <br />SUBSTANTIALLY COMPLETE SHALL RECEIVE SURFACE ROUGHENING, MULCHING AND CRIMPING. FOR <br />SLOPES STEEPER THAN 2:1, SPRAY ON MULCH WITH A TACKIFIER IS AN ACCEPTABLE ALTERNATIVE. <br />2. MULCH SHALL BE APPLIED AT A RATE OF 2 TONS /ACRE. MULCH SHALL BE MECHANICALLY CRIMPED TO A <br />DEPTH OF 2 INCHES USING A CRIMPER AND COVERED WITH TACKIFIER. ALL MULCH SHALL BE CRIMPED SUCH <br />THAT THE INDIVIDUAL PIECES OF STRAW OR HAY FORM EXAGGERATED V- SHAPES PROTRUDING OUT OF THE <br />GROUND SEVERAL INCHES. STRAW OR HAY IN A STAGE OF DECOMPOSITION, BRITTLE, ROTTEN OR MOLDY <br />OR OLD, DRY MULCH WHICH BREAKS DURING THE CRIMPING PROCESS WILL NOT BE ACCEPTABLE. <br />3. MULCH SHALL BE APPLIED AT A RATE OF 4 TONS /ACRE IF NOT MECHANICALLY CRIMPED. <br />4. TACKIFIER SHALL BE APPLIED IN ORDER TO HELP WITH STRAW DISPLACEMENT. TACKIFIER SHALL BE APPLIED <br />ACCORDING TO THE MANUFACTURER'S RECOMMENDATIONS. <br />5. MULCH SALL CONSIST OF CERTIFIED WEED FREE FIELD OR MARSH STRAW OR HAY DERIVED FROM OATS, <br />BARLEY, WHEAT OR RYE. <br />WILDCAT MINING CORPORATION <br />5555 DTC PARKWAY <br />SUITE A -4000 <br />GREENWOOD VILLAGE, CO 8011 1 <br />BMP DETAILS <br />SURFACE ROUGHENING <br />PREPARED BY: DJM <br />REVIEWED BY: DJM <br />REVISION DATE: 03 2 <br />FIGURE BMP 11 <br />