Laserfiche WebLink
� L <br /> � 1 <br /> i. The materials imported to the site for backfill will be clean inert material and <br /> will not be combustible. <br /> ii. Employees will not accept the delivery of organic materials or allow organic <br /> substances as backfill material. <br /> g. Prior to working at the site,all employees are trained for an adequate response in case <br /> of an emergency, each is aware of site safety plans and all employees are certified as <br /> Mine Safety and Health Administration (MSHA), Part 46 new or experienced miners. <br /> h. A minimum of one on site employee is certified as Heart Saver, in First Aid, in CPR,and <br /> in the use of AED. <br /> i. Equipment and trucks will generate the only noise on the site.All equipment is <br /> equipped with proper mufflers and backup alarms to assure compliance with noise <br /> standards. <br /> j. A commercial sanitation company will supply and maintain portable toilets. <br /> k. No toxic or acid-forming materials will be used in material processing or as backfill <br /> material.This will prevent leaching of acids into the ground water. If any unknown <br /> refuse, acid-forming or toxic producing materials are inadvertently mined,they shall be <br /> managed and disposed of in a manner that will control unsightliness and protect the <br /> drainage system from pollution. <br /> I. No explosives will be used in conjunction with mining or reclamation. <br /> B—Earth moving, Mining and Equipment <br /> 1. Materials-The mining of construction material including rock, sand, and gravel for use in the <br /> production of non-metallic construction products. <br /> a. Topsoil—The mining operation will strip topsoil to expose the underlying raw aggregate <br /> material deposit.Topsoil storage is shown on Exhibit C Mine Plan Maps.The volume of <br /> topsoil this mine is±36,450 tons or±1,500 tons per acre of topsoil.The depth of the <br /> topsoil ranges from six(6) inches to twelve (12) inches over the mining area.Striping of <br /> the topsoil for phase 1 along the south boundary of the mine area in the flood plain, and <br /> outside of the excavation area and floodway.Topsoil storage stockpiles are±15 ft high <br /> for use in future reclamation activities.Topsoil stockpiles will have vegetative <br /> stabilization seed mix applied to the surface. <br /> b. Overburden—Overburden material will be used to backfill earlier mine excavation areas <br /> and reclamation. Overburden stockpiles will be found within the various mining blocks. <br /> The volume of overburden for all the mining phases is±218,700 tons or±9,000 tons per <br /> acre of overburden.The depth of the overburden ranges from 2 to 4 feet over the mine <br /> area. <br /> c. The overburden material is a part of the mine backfill.When mining operations call for <br /> overburden materials to be stored over a year,an employee will seed the stockpiles <br /> with a reclamation seed mix.This will minimize erosion prior to use in mine reclamation. <br /> d. Crusher fines,wash plant fines and clean inert material will be used to backfill the mine. <br /> e. Recyclable Aggregate Materials— <br /> i. Asphalt paving or concrete fragments shall be diverted to the aggregate recycle <br /> material operation. It is expected that minimal amounts of small asphalt or <br /> concrete fragments may be placed in the backfill. <br /> ii. Any concrete received will be hardened for at least 60 days prior to acceptance, <br /> with most of the imported concrete coming from demolition jobs that has been <br /> in place for years prior to removal and acceptance at the site. Only hardened <br /> asphalt fragments,typically from portions of asphalt parking lots or street <br /> H\Pits HBP Plants\EVANS\Evans Mining Resource\DBMS Adequacy Revisions\Exh D Mine Plan Rev 101822 docx <br />