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Based on this seed mixture, an application rate of approximately 20.0 to 28.0 lbs <br />PLS/ac will be used. Topsoil should be disked prior to seeding. It is <br />recommended that fertilizer be utilized for reclamation. A standard application of <br />fertilizer will be used and applied at a rate of 250 lbs/ac as shown in Table E-4. <br /> <br />Table E-4. Fertilizer Application <br />Fertilizer Standard rate <br />lbs/acre <br />Diammonium phosphate (18-46-0) (46-53% available P2O5 with 18-21% <br />N) <br />250 <br /> <br />Fertilizer will not be used near the edge of the reservoir, since the possibility of <br />nitrate contamination in the pond water exists. The total disturbed area to be <br />seeded is approximately 53acres. The total area to be fertilized is approximately <br />53 acres. Seeding and fertilizing will be completed after the overburden and <br />topsoil is replaced, smoothed to conform to the existing topography and disked. <br />Optimal periods of seeding are in the fall (after November 1st) or in the spring <br />from late March up to April 30th. Mulching will not be completed as the quality <br />soils and availability of water should facilitate the rapid establishment of perennial <br />grasses. <br />Following revegetation, weed management strategies will be implemented to <br />facilitate and achieve native grassland. Years 1 thru 5 following revegetation will <br />include an aggressive mowing program to prevent the growth and establishment <br />of weeds, specifically, eight noxious weeds including: Canada thistle (Cirsium <br />arvense), Dalmation toadflax (Linaria dalmatica), diffuse knapweed (Centaurea <br />diffusa), leafy spurge (Euphorbia esula), musk thistle (Carduus nutans), Russian <br />knapweed (Centaurea repens), spotted knapweed (Centaurea maculosa) and <br />Yellow toadflax (Linaria vulgaris) as mandated by Colorado State Law (35- <br />5.5CRS1990, 1996). If needed, herbicide application will be applied as needed <br />to further control these weeds. Herbicides will also be used to control salt cedar <br />(Tamarix spp.) if it becomes established in the reclaimed area. Table E-5 <br />presents recommended herbicides, application rate, and time of application for <br />each of the 9 species. It may be necessary to replant treated areas. <br /> <br />Table E-5 Recommended Herbicide Application Table <br />Weed Species Herbicide Application Rate Application Time <br />Canada thistle Curtail 2-3 qt/ac October or 1 mo after last mowing <br /> Clopyralid 2/3 - 1 pint/ac <br />Spring or fall, during rosette to bud <br />growth stages in spring <br /> 2,4-D 1lb ai/ac <br />Spring prebud to early early bud growth <br />stages