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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 39.4 acres. The total area to be fertilized is <br /> approximately 39.4 acres. Seeding and fertilizing will be completed after the <br /> overburden and topsoil is replaced, smoothed to conform to the existing <br /> topography and disked. Optimal periods of seeding are in the fall (after <br /> November 1st) or in the spring from late March up to April 30th. Mulching will not <br /> be completed as the quality soils and availability of water should facilitate the <br /> rapid establishment of perennial 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 6.4.5-4 <br /> Recommended Herbicide Application defines recommended herbicides, <br /> application rate, and time of application for each of the 9 species. It may be <br /> necessary to replant treated areas. <br /> Table 6.4.5-4 Recommended Herbicide Application <br /> Weed Species Herbicide Application Rate Application Time <br /> Canada thistle Curtail 2-3 qt/ac October or 1 mo after last mowing <br /> Spring or fall, during rosette to bud <br /> Clopyralid 2/3 - 1 pint/ac growth stages in spring <br /> Spring prebud to early early bud growth <br /> 2,4-D 1lb ai/ac stages <br /> Spring prebud to early early bud growth <br /> picloram 1lb ai/ac stages <br /> Dalmation toadflax picloram 0.5- 1 lb ai/ac Fall <br /> picloram + 2,4-D Pre-bloom or fall <br /> Spring rosette to early-bolt growth <br /> Diffuse knapweed Tordon 1 pint/ac stages <br /> Banvel/Vanquish/ Spring rosette to early-bolt growth <br /> Clarity + 2,4-D 0.5 + 1 qt/ac stages <br /> Amen Aggregate Resource <br /> Specific Exhibits <br /> Page 21 of 84 <br />