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<br />EXHIBIT D -Mining Plan <br />a) Mining Schedule <br />It is anticipated that sand and gravel excavation, processing (rock crushing and screening), and stockpiling at <br />the Fiscus North site will commence upon receipt of approval from the Colorado Division of Mining and <br />Geology and receipt of other necessary permits. Gravel excavation and processing will be seasonal with <br />stockpiling of gravel for later County uses depending upon the local road repair and construction needs. <br />Excavation and stockpiling volumes are anticipated to be approximately 100,000 tons per year. The Fiscus <br />North site likely has only 2 to 3 yeazs of gravel and sand reserves. <br />b) Topsoil thicknesses at the Fiscus North site aze thin, typically less than 6 (six) inches. Topsoil <br />will be stockpiled at the location shown on the mine plan map (see Exhibit C). <br />c) The Ogallala Formation gravel deposits proposed to be mined are ridge capping units at the <br />Fiscus North site. Therefore, the thickness of overburden to be removed during gravel extraction is expected <br />to be minimal. Minimal stockpiling of overburden is anticipated. Mined soils unsuitable for construction use <br />will be separated from the mined gravels and may be stockpiled at the site. These soil stockpiles will be <br />utilized for excavation backfill and site reclamation. <br />d) The proposed mining area at the Fiscus North site is the crest of anortheast-southwest <br />trending ridge. The estimated thickness ofgravel-bearing zones varies from between 0 and 40 feet thick at the. <br />Fiscus North site. ': he Ogallala grave] deposits atthe FiscusNorth site decrease in thickness to the north. No <br />high wall mining is anticipated. The mining plan is to remove gravel-bearing zones from the ridge crest; pit <br />• depth will be minimal. <br />e) The enclosed mine plan map shows the proposed locations for the haul road, grave] processing <br />(crusher location), soil and grave] product stockpile areas (see Exhibit C). <br />i• <br />f) The dimensions of any significant disturbances are shown on the mine plan map as `limit of <br />gravel mining azea' and the gravel processing and soil stockpiling azeas (see Exhibit C). <br />g) Weld County Road 120 extends east-west along the north edge of the Fiscus North site (see <br />Exhibit C). The gravel excavation and processing azeas will be accessed from an existing dirt driveway that <br />connects the Fiscus homestead to Weld County Road 120. <br />h) The southwestern comer of the Fiscus North property is traversed by anorthwest-southeast <br />oriented intermittent stream that is typically dry most months of the year. Mining excavation and soil <br />stockpiling activities aze planned to maintain at least a 200-foot buffer from this watercourse. There are no <br />irrigation structures or surface water impoundments existing or planned at the site. Water needs for gravel <br />mining and processing operations aze expected to minimal; water for dust control can be obtained and hauled <br />from County-owned wells at other gravel pits. Water used in mining and crushing operations and for dust <br />control is estimated to not exceed approximately 4000 gallons per month during those operations. <br />i) Ogallala gravel deposits at the Fiscus North site lie at the surface along the top of a northeast- <br />southwest trending small ridge (Exhibit C). It is anticipated that no groundwater will be encountered at the <br />Fiscus North site. The Fiscus North site does not lie in a Designated Ground Water basin (per Colorado <br />Division of Water Resources, Office of the State Engineer). <br />M:~DAVE B~FiscusPermilS~DMG pemtit~Exhibits.dw 4/18/2007 <br />