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Page 117 <br /> 6.4.4 EXHIBIT D — Extraction Plan <br /> At anticipated production levels and production only from the Center Section of <br /> Central Field, extraction of the remaining perimeter excavation could take 7-8± <br /> years. Extraction of the core could then commence and take 6-8± years, <br /> overlapping with initial development of the next field. With sequential <br /> development, extraction of the North-East Section of Central Field could take 4- <br /> 6± years, the West Section of Central Field 5-7± years, and the North-West Field, <br /> 8-10± years. Please Note: The time periods will depend on the actual rate of <br /> production required to meet market demand, and the average annual advance <br /> may also vary with thickness of the sand and gravel and ground conditions. Some <br /> flexibility may also be exercised to optimize operations around or through <br /> existing infrastructure if scheduled for removal. <br /> Table E-1 provides a projection of mine development and regrading/reclamation. <br /> The plan as described in this Exhibit D and also in Exhibit E, is a forecast and <br /> may vary according to market conditions with mining and subsequent regrading <br /> occurring faster or slower, sometimes significantly so. The geology may also <br /> dictate changes in the rate of extraction. If efficiency demands in a higher <br /> production demand scenario, up to four separate areas could be developed in the <br /> manner described simultaneously. Such changes may happen quickly and would <br /> be addressed in the Annual Report. 'In discussing this flexing of production and <br /> scaling operations up or down with OMLR staff, a concern was raised as to <br /> impacts on mule deer habitat if there were separate production areas with a <br /> larger area under active production. This has been addressed as having minimal <br /> impact in a letter from Ron Beane, Senior Wildlife Biologist with wildlife <br /> consultant ERO Resources Corp attached as an addendum to this Exhibit D. <br /> Additional information is provided under Exhibit C-1: Existing Conditions Map; <br /> which shows all known current and active significant man-made structures <br /> located on or within 200 feet of the permit boundary detailed under including <br /> creeks, roads, buildings, oil and gas facilities [such as tanks, batteries, wells and <br /> lines], and power and communication lines and support structures, easements <br /> and rights-of-way; located over the permitted lands or within 200 feet of the <br /> same. A listing of the adjoining surface owner's names and addresses located <br /> within these areas are listed under Exhibit C Text, correlated with those shown <br /> in the afore-mentioned Exhibit C-1: Existing Conditions Map. <br /> The extraction limits assure through the use of setbacks that other interests are <br /> not affected by planned extraction. Extraction is set back uniformly at a <br /> minimum 10.0± feet from the edge of property lines; easements and rights-of- <br /> way; underground gas lines or other underground facilities, irrigation ditches <br /> and seep ditch, wells and other structures. 'Minor variations may occur in the <br /> field over time from those represented on Exhibit Maps. The plans detailed in <br /> e Adequacy Item 17:Wildlife concern <br /> Adequacy Item 21 <br /> VARRA COMPANIES, INC. TWO RIVERS SAND GRAVEL AND RESERVOIR PROJECT MARCH 2O22 <br /> A REGULAR IMPACT[1121 CONSTRUCTION PERMIT APPLICATION-COLORADO DIVISION OF RECLAMATION MIING&SAFETY <br /> OFFICE OF MINED LAND RECLAMATION <br />