2007-09-05_REVISION - M1977424 - Laserfiche WebLink

Home Browse Search

Permit M77-424 Amendment 1 Exhibit E Page 5 of 6 The previously approved seed mix shown in the original mine permit and subsequent technical revisions has been modified for the evaporation pond reclamation because of differences in native vegetation at the pond's lower elevation. The proposed seed mix is shown in Table 1. In addition, as requested by the BLM, this mix was the result of a modification of the original mix stipulated in the BLM ROW (COC 038492). Application rates may be modified if broadcast (surface sowing) seeding techniques are employed, and the soil surface will be disced, chained, or raked to cover the seed. Table 1. Evaporation Pond (Area 23) Reclamation Seed Mix S ecies Application Rate Ibs/acre PLS Grasses Galleta, Viva 1 Indian Ricegrass, Paloma 4 Western Wheat rass, Arriba 5 Sand Dro seed 1 Shrubs Shadscale, (con erti olia 1 Fertilizer will be applied at a rate of 250 pounds per acre with the seed, during initial tilling or discing, or before final raking of the surface. A balanced 18-18- 18nitrogen, phosphorus, potassium fertilizer will be used. Certified weed-free straw mulch will be applied at a rate of 2,500 pounds per acre and crimped into the surface following seeding using a mechanical disc. Straw mulch will be applied by a mechanical spreader. Straw or jute matting (erosion control blankets) will be installed in areas where the final grade of the barrow azea exceeds or equals a 4 to 1 slope. Table 2 shows the reclamation materials proposed for use on reclamation of roads.. Table 2. Evaporation Pond Area Reclamation Materials Material Application Rate Ibs er acre Seed mix Table 1 12 Straw mulch 2,500 Fertilizer (18-18-18 N-P-K) 250 Straw or 'ute mattin Slo e > 4:1 9. Maintenance and Monitoring. Post-revegetation work will consist of maintenance and monitoring of the reclaimed surfaces. Monitoring will involve observations of plant growth progress including cover density and diversity, erosion, and other