2011-07-29_REVISION - M2005059 - Laserfiche WebLink

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TECHNICAL REVISION NO. 1 NELSON MINING RESOURCE DRMS PERMIT NO. M- 2005 -059 ASPHALT SPECIALTIES CO., INC. ( "ASCI ") Based on a routine site monitoring inspection performed by the DRMS on June 16, 2011, maintenance and stabilization issues were found to be out of compliance with the DRMS mineral rules and regulations for the approved permit on the Nelson Mining Resource gravel mining operation site. The site has not operated in a significant manner since February 2009, with mining, production or reclamation activities due to the continued slowdown of the need for construction aggregates. Based on the conditions noted during the site inspection, this Technical Revision ( "TR ") No. 1 has been prepared to address the Corrective Actions required by the DRMS to eliminate a current weed infestation problem, develop a weed control plan and to revegetate topsoil stockpiles to preclude further weed infestation and to stabilize and control erosion of topsoil material. CORRECTIVE ACTION 1: There are state - listed noxious weeds currently on the permit area primarily located near the entrance, around the scalehouse /office and some distance further down the entrance road to the north. There is also an area of recent Tamarisk invasion located to the south of the plant area. A weed control plan had been developed only as part of the permit approval for control of weeds after final reclamation in areas of native grass revegatation. A weed control plan shall be developed and implemented for the site during mining and reclamation activities. RESPONSE TO CURRENT WEED INFESTATION: Weeds currently on the site in the areas described above will be sprayed with herbicides by a professional company from Longmont who ASCI has used before for these activities on mine sites in the area. A copy of the paid invoice will be provided to the DRMS to show that this work was completed. The area of the entrance, scalehouse and entrance road will be treated with "Vista" and "2, 4 -D ". Cheatgrass will be specifically treated with "Plateau ". Tamarisk treatment will consist of cutting the shrubs to the stump and treating the stump with "Habitat ". This action will be completed in September to early October 2011. RESPONSE TO WEED CONTROL PLAN: Since a weed control plan was never developed as part of the permit approval for this site during active mining and reclamation, only for post -final reclamation maintenance, ASCI commits to monitoring all areas within the permit boundary for weed infestation and to control areas that have been invaded by state - listed noxious weeds by mowing, tilling prior to seed fall, or in the case of small, isolated areas of intense infestation, treating with herbicides as described above for the current situation. Upon completion of final reclamation activities, the approved weed control plan for post -final reclamation and maintenance of the revegetated areas will take effect.