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3) Overburden-Overburden will be used as backfill of phase excavation areas. Overburden material <br /> will be used on site for mine backfill and reclamation. Overburden stockpiles will be found within <br /> the southern mining blocks.The volume of overburden for all the mining phases is±547,000 tons or <br /> ±9,000 tons per acre.The depth of the overburden ranges from 2 to 4 feet over the mine area. <br /> a) Overburden stockpiles shall be seeded if it is predicted the material will be stored more than <br /> one year.This will minimize erosion prior to use in mine reclamation. <br /> 4) Wash plant and crusher fines are by products that may be used as inert mine backfill. <br /> 5) Backfill, Asphalt Specialties currently charges and inert material disposal fee of$50/tandem dump <br /> truckload and $60/tractor trailer load.The companies daily disposal loads average one hundred <br /> truckloads per day(30/70 mix)with a peak of 1,000 truckloads in one day. <br /> INERT MATERIAL Tandem Tractor <br /> DISPOSAL Dump Trailer ±Total <br /> Leads/Day 40 60 100 <br /> tons/load 15 24 39 <br /> Daily Total ton/day 600 1,440 2,= <br /> DailyTotallqf/day 400 960 1,360 <br /> Yearly Total cy/yr 98,400 236,160 3KM <br /> Disposal Fee$/load $50 $60 <br /> Total Disposal Fee $492,000 $M,600 $1,377 <br /> a) Onsite overburden, onsite crusher fines,wash plant fines and imported inert material will be <br /> used to backfill the mine. <br /> b) The only material received at the site will be inert material per the DRMS Construction Material <br /> regulations 2 CCR 407-4 Rule No. 1.1 Definition (22) " Inert Material " means non-water-soluble <br /> and non-putrescible solids together with such minor amounts and types of other materials, <br /> unless such materials are acid or toxic producing,as will not significantly affect the inert <br /> nature of such solids.The term includes, but is not limited to,earth,sand,gravel, rock, <br /> concrete which has been in a hardened state for at least sixty days, masonry,asphalt paving <br /> fragments,and other inert solids. <br /> c) Inert Backfill Material - It is ASCI's intention to use primarily native and natural aggregate <br /> materials for inert backfill material. It is especially important to ASCI that only acceptable non- <br /> contaminated, inert materials are delivered to the site. ASCI will use reputable contractors that <br /> will follow site permit rules and guidelines.ASCI will collaborate with the contractors to obtain <br /> assurances that the inert materials are free of contaminants and are native or natural materials. <br /> ASCI will exercise every effort to learn as much as reasonably possible about the inert materials <br /> received at the site to ensure that those materials are free of contaminants. All inert materials <br /> are delivered by pre-approved contractors that have a history of working with ASCI. <br /> d) Clean, offsite- inert materials will be accepted and incorporated as mine backfill material that <br /> include soil, earth, dirt, gravel, sand, rock, and masonry. Onsite materials to be incorporated <br /> into the backfill may include overburden,wash plant and crusher fines. <br /> e) Using inert fill materials to fill the site will allow for future heavy industry or dryland pasture use <br /> on the property.The benefits for the inert fill materials are: <br />