PERMFILE42224 - Laserfiche WebLink

Home Browse Search

50/50 mixture of ammoniated triple superphosphate and ammonium nitrate applied at a rate of 100 pounds per acre should be suitable for ini- tial establishment. Rates exceeding this rate should be avoided because of the possibility of suppressing germination he cause of added fertilizer salts. As in the case of reclaimed areas at the loadout, field diagnoses of nitrogen deficiency can be made in the first several seasons after initial establishment. Nitrogen applications in subsequent years based on these field diagnoses will be a much more sensible way to go about things than performing soil tests for fer- tilizer recommendations since meaningful fertilizer recommendations do not exist for the species being seeded. On the basis of the results of current revegetation work on previously disturbed sites at the mine which have not been topsoiled, successful reclamation appears realistic and practical. Soil sampling and analy- sis of the mine area surface and subsurface media, including several from very harsh sites, indicate no physical or chemical properties which would prevent successful revegetation (see Section 3.8.1). Continuing work on interim reclamation will further clarify these prospects and the Division will be periodically supplied with updated progress reports. A number of plant species have already adapted to these disturbed sites. Seed mixtures are proposed in the accompanying Tables 4.4.2-5 through 4.4.2-g. The first mixture is a harsh-site mixture which will be used on the south-facing areas of exposed weathered Mancos-shale. The native vegetation on this type of area is extremely sparse, with broad areas of naturally occurring bare ground. Area 11 on the Interim Reclamation Plan Map is representative of this type of site. The second mixture will be used on the cooler, more moist sites of the low-lying, flatter areas, and on the few north-facing disturbed areas 4-58