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I WEED CONTROL PLAN Introduction This document addresses issues related to weed control at the Deepe Farm aggregate mining site operated by Western Mobile. Weed control at the Deepe Farm site will focus on reclaimed areas. Weed Species of Concern The weed species of concern include both annual and perennial species which require different strategies for control. The major species of concern include: Scientific Name Common Name Distributional Growth Form Status Cirsium arvense Canada Thistle Introduced Perennial Forb Cardana draba White Top Introduced Perennial Forb Lepidium latifolium Perennial Peppergrass Introduced Perennial Forb Convolvulus arvensis Field Bindweed Introduced Perennial Forb Centaurea diffusa Diffuse Knapweed Introduced Annual Forb Bromus tectorum Cheatgrass Introduced Annual Grass Carduus nutans Nodding Bristle Thistle Introduced Biennial Forb Sisymbrium altissimum Tumbling Hedge Mustard Introduced Annual Forb Descurainia spp. Tansy Mustards Introduced Annual Forbs Verbascum thapsus Common Mullein Introduced Biennial Forb All of these species are adapted to disturbed conditions such as those that occur on mining sites or agricultural lands. All of these species were introduced into the region at various times beginning in the late 1800's and have expanded into a variety of habitats. Weed Control Methods Monitoring/Evaluating/Reoorting. Monitoring of weed populations is an integral part of the weed control program. This work will consist of examining reclaimed areas and identifying and mapping areas where weed control is needed. This information will be used to develop an annual weed control plan that will describe whit needs to be done, where different types of control will be implemented,when different control measures will be accomplished and how the program will be conducted. Decisions on the annual program(based on site reconnaissance)will be made in late spring in order to make sure that weed control plans can be developed. Development of the plan will include input from company representatives,a plant ecologist, a weed control specialist and an overall project manager. Additional site visits during the year may be necessary to evaluate the success of the control measures and to prepare recommendations for any late season weed control that may be necessary. After each year of treatment,the success of the various programs will be evaluated. This process will consist of examining the treatment areas as well as keeping records of what treatments were applied in each area. Herbicide Application. A wide range of herbicides is available for control of weed species. For the Deepe Farm site, herbicide application will be used primarily for perennial£orb