2021-04-14_PERMIT FILE - C1996084 (8)

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Rule 2: Permits • Reclamation Equipment The following equipment may be used for reclamation on the Lorencito Canyon Mine permit area: • Scrapers; • Dozers; • Farm Tractors; and • Hydroseeders The following implements may be used with the farm tractor: • Ripper/subsoiler; • . Chisel plow; • Disk/harrow/cultipacker; • Drill seeder broadcast seeder/mulcher; and • Mulch crimper Seedbed Preparation Seedbed preparation will be conducted immediately after grading, and covering with soil. On level to gentle slopes, the seedbed will be disked, and harrowed along contour to breakup large clods. On steeper slopes, rocky sites, or on areas too narrow to negotiate equipment, the soil surface will be left in a roughened condition. An irregular seedbed will provide • microsites for plant germination and reduce soil movement on steeper slopes. Contour furrows may be employed along the steeper slopes of highwall reclamation areas, and will be installed prior to seeding. These furrows will typically be placed on a 1-3% grade leading to an armored down-drainage; the length of these furrows will usually be limited to 150-300 feet. Atypical cross-section of a contour furrow is depicted in Figure 2.05.4-19, Design of Typical Contour Furrow. Alternatively, staggered rows of straw bale dikes placed on contour may also be used to retard runoff These will retard run-off while assisting in moisture retention and reducing soil loss. Hydroseeding with a soil stabilizing additive to retard run-off and help hold soil granules in place is another stabilization technique which will be utilized to minimize erosion on steeper slopes. A fertilizer additive will also be employed with the mix to stimulate plant growth, further enhancing resistance to erosion while minimizing future disturbance to the area. Areas to be hydroseeded (reference Map 2.05.3-5 and Table 2.05.4-1) include E1, E2, N2, S3, and W-1. Additional azeas may also be hydroseeded. • TR-13 2.05-63 (Revised 12/10/04)