Laserfiche WebLink
<br /> <br /> <br />EXHIBIT D <br />1 <br />1 <br />1 <br /> <br />1 <br />1 <br />1 <br />1 <br />1 <br />Minin¢ Plan <br />The proposed expansion of the existing gravel extraction operation known as the Dallas <br />Gravel Pit located in the North 1/2 of the NW 1/4 of Section 3, T45N, R8W will consist <br />of a 3 phase dry alluvial operation utilizing the top down method of excavation. Based on <br />previous yearly extraction figures and projected growth within the County, this mining <br />operation is expected to remove approximately 30,000 cubic yards of crushed gravel and <br />15,000 cubic yazds of unprocessed pit run per yeaz. Future removal of material may be <br />higher depending on future demand due to growth. , !~s c v.~. f - /gyp' ' <br />i ~rl <br />Gravel extraction will take place seasonally between the months of arch and November <br />and will generally remain inactive during the winter. Crushing of extracted material will <br />take place once a year in March or April, depending on weatfier, and will be performed by <br />an independant subcontractor hired by the County. A portable processing unit will be <br />delivered to the site and approximately 30,000 cubic yards of gravel will be processed and <br />stockpiled. The portable processing unit will then be removed from the site until the <br />following year. Periodic screening of pit run material will occur most likely during the <br />winter months occasionally as needed and weather permitting. The screen will be delivered <br />to the site as necessary and will not be stored on site. The screened material will be <br />separated into two stockpiles, one containing gravel material of 1 1/2 inch average <br />diameter and the other with material greater than 3 inches for future crushing. All material, <br />with the exception of topsoil, will be utilized as either fill or processed gravel and <br />consequently there will be no overburden to dispose of. <br />' The pit is a dry alluvial operation and has no water requirements and therefore does not <br />divert, impound or otherwise use any stream flows. Furthermore this mining operation <br />does not and will not intercept any groundwater. <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />Excavation and earthmoving will be accomplished with 2 front end loaders, 2 - D6 <br />bulldozers, 2 - 10 yard end dump trucks and 3 - 20 yard belly dump trucks owned and <br />operated by the County. Access to and from the site is achieved from County Road ]OB <br />which is a County maintained 1.09 mile gravel road extending north from County Road 10 <br />(Owl Creek Pass Road) to the end of the road at the pit site. Periodic maintenance <br />includes grading for proper drainage and resurfacing with aggregate base course. Vehicles <br />from the site will traverse this road and then travel approximately 1 /2 mile west on County <br />Road 10 to State Highway 550. <br />The existing operation een (ocated on roughly 10.8 acres in the east half of the <br />~ existi 40 acre permitted pazcel and has unknowingly encroached approximately 310' <br />~11/~ east of the pa additional 10 acres will be added to the existing parcel by <br />V_ the BLM to allow for mining in the previously out-of-bounds area. The site is situated on <br />a west facing ridge sloping down to the west. The highest point on the site is located on <br />the east boundary at an approximate elevation of 7,575 feet. <br /> <br />