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Page 13 <br /> 6.4.7 EXHIBIT G - Water Information <br /> the OMLR at the time of the Annual Report, or by separate cover. No <br /> measurable impacts to the prevailing hydrologic balance are foreseen. <br /> ii. The Flow Technologies Report of 22 January 2020, provides a plan of <br /> modified basin design to be incorporated into this submittal as a means to <br /> minimize erosion of the basin berms while optimizing the integrity of the <br /> basin from the South Platte and Big Thompson Rivers during a 100-year <br /> flood event. <br /> (2) (a) Please refer to Exhibit C-1: Existing Conditions Map. 5Wells are also shown on <br /> Exhibit G: Water Information Map and a table providing well details is included as <br /> an addendum to this Exhibit G. <br /> (b) The known aquifer under the site is the stream alluvium. <br /> (c) Discharge water will be dissipated with hard surface riprap or established <br /> grassed waterways. Other waters are retained by internal pit drainage, directed <br /> by vegetated berms or established waterways or through the maintenance or <br /> establishment of a stabilizing cover of vegetation, or as otherwise established <br /> under an approved Colorado Department of Health stormwater permit and/or <br /> stormwater discharge permit. <br /> 6Stockpiling of soil, overburden, or product above the existing ground elevation will <br /> not occur in a manner understood to obstruct flood waters where they might occur <br /> within the existing floodplain. It is understood and agreed here-in that their <br /> longitudinal dimensions if they occur there should extend parallel to anticipated <br /> flood flows where they exceed a cone or other shape that might find its existence <br /> contrary to intent by volume beyond that which could be understood to be <br /> temporary, or transitory; especially outside of seasonality where flooding might be <br /> more reasonably anticipated. <br /> As stated in Exhibit D, the conveyor will be set on an elevated structure at varying <br /> heights to be situated about the 1 in 100-year flood level. An average height of 7 <br /> feet is expected. The conveyor will be supported by legs at intervals of <br /> approximately 20 feet with typically 6- x 2- x 2-foot concrete blocks sitting on <br /> ground surface used as necessary to anchor the legs. The conveyor will span the <br /> river channel and metal (or other appropriate material) pans will be installed under <br /> the conveyor structure to prevent spillage into the river. The design will be similar <br /> to other Raptor locations where an extended span has been required to cross a <br /> county road. Final conveyor specifications are to be determined however belt width <br /> is anticipated in the range 24-36". <br /> s Supplemental Groundwater Adequacy Item 4 <br /> 6 Adequacy Item 45:Floodplain management,including conveyor crossing discussion <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 KING&SAFETY <br /> OFFICE OF MINED LAND RECLAMATION <br />