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TECHNICAL REVISION NO. 5—Plant Modification <br /> HUKILL GULCH MILLSITE (DRMS Permit No. M-2009-076) <br /> Venture Resources, Inc. <br /> The two-level structure will be comprised of slab-on-grade sloped floors. It will be equipped with <br /> perimeter "stem" walls of sufficient height to establish a level starter base to accommodate a pre- <br /> engineered structure (i.e., approximately 3-ft. high along the upslope side, and approximately 6-ft. high <br /> along the downslope side). Thus, all operating areas will be within a fully-contained concrete perimeter, <br /> with the interior portion of each level draining to a sealed containment sump, with provision for pumped <br /> recovery of fluid loss. <br /> The completed facility will house all milling and gravity recovery circuit equipment in a temperature <br /> controlled environment (i.e., heated for winter use). The uppermost level will be a nominal 50-ft. in <br /> length (inclusive of stem wall thickness) by a nominal 25-ft. in width (inclusive of stem wall thickness). <br /> Base elevation (i.e.,top of slab) is anticipated to be approximately 8,740 ft. above mean sea level (amsl). <br /> The longitudinal stem/drop wall will accommodate a nominal 3-ft. vertical drop extending down to the <br /> lower level slab, which is to be a nominal 15-ft. in width, and at an approximate(top of slab)elevation of <br /> 8,737 ft. amsl. <br /> Site preparation will include "cut-and-fill" leveling to accommodate the two levels. It is anticipated that <br /> excavation can be largely completed through ripping and/or direct excavation processes in the near- <br /> surface, weathered and decomposed granite; however, should limited blasting be required, Venture will <br /> engage a licensed blasting firm to conduct all blasting activities. <br /> It is anticipated that substantially all underlying material will be utilized in conjunction with the pad <br /> preparation cut-and-fill balance and/or as post-construction backfill to facilitate positive drainage away <br /> from the foundation.Venture estimates that approximately 300 to 325 bank cubic yards of material (bcy) <br /> will be disturbed(excavated and/or placed)in order to establish the prepared sub-base or pad. <br /> To the extent present, Venture will first remove all"topsoil"materials(i.e., largely comprised of surficial <br /> pine duff, and decomposed granite) for long-term stockpiling for eventual site reclamation use (refer to <br /> Figure 2:Proposed Mill Upgrade Site Plan for proposed stockpile location). <br /> Concrete slab(s) and walls will be formed in place. An "acid resistant" concrete mix will be utilized. <br /> Concrete slab and wall reinforcement will conform to all Uniform Building Code (UBC) specifications <br /> and requirements,as appropriate for the anticipated loading conditions. <br /> A ball mill would next be mounted on a dedicated (raised) concrete pad situated atop the upper level <br /> reinforced floor. Following that, the (to-be-determined) Venture-retained "design/build" contractor will <br /> commence construction of the superstructure atop the level perimeter wall component, to be followed by <br /> enclosure of the facility, with all stages of construction adhering to the approved, engineer-certified <br /> specifications. All aspects of the facility construction will be subject to Uniform Building Code (UBC) <br /> guidelines (as per Clear Creek County requirements) and Mine Safety and Health Administration <br /> (MSHA)requirements(as applicable). <br /> 3 <br />