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McAbee Construction Co. Riverside Pit - M- 1976 -056 Weed Control Plan 1. INTRODUCTION McAtee Construction CO., (hereinafter referred to as the Operator) of the Riverside Pit, encompassing a parcel of land shown on the vicinity map and located in parts of the E'%SE' /, of Section 28, and parts of the and NE%/, Sec. 33, T -8 -N, R -52 -W of the 6th P.M., County of Logan, State of Colorado. Containing 86.35 acres ±. Gravel mining operations occur in phases across all, or part, of this ap- proximately 86 acre mine. The site currently has areas that have been mined and reclaimed; are partially reclaimed; area actively being mined and undisturbed area. Much of the area mined is covered with lake area so the weed control plan takes into consideration the use of chemicals around water. Recognizing the presence of state - listed and county- listed noxious weeds in the general vicinity of this project area; and understanding the destruc- tive nature of these noxious weeds, the Colorado Division of Reclamation, Mining & Safety has required the operator to develop and implement a weed management encompassing the total project area. The CSU Cooperative Extension office operates under cooperative agreement with the Logan County government, and provides technical assistance regard- ing noxious weed management on public and private lands within the county. McAtee Construction Co. will do biennial checks on the mine for any noxious weeds on site. Implementation of this plan will begin upon Technical Revi- sion approval by the Division of Reclamation, Mining & Safety and continue until the reclamation is determined to be complete. It is not possible to totally eradicate the noxious weeds from the mine since much of the surrounding property is not owned by McAtee Construction Co., nor managed for noxious weed control. These uncontrolled areas are the seed sources for the infestation occurring on the mine. For this rea- son the Operator will be continually working to control noxious weeds throughout the life of the mine and until reclamation is done. 2. OVERVIEW OF APPROACH TO WEED MANAGEMENT Weed control is part of property management. This plan is based on promot- ing growth of the desired plant species and communities, rather than on simply eliminating weeds. Preventive programs are implemented to keep the management area free of species that are not yet established there but which are known to be pests elsewhere in the area. Priorities are set to reduce or eradicate weeds that have already established on the property, according to their actual and potential impacts on the land management goals for the property, and according to the ability to control them now versus later. Actions will be taken only when careful consideration indi-