2017-03-29_PERMIT FILE - M2016085

• Permit No: M2016085
• IBM Index Class Name: Permit File
• Doc Date: 3/29/2017
• From: Bradley Windell & Heidi Hynes
• To: DRMS
• Email Name: PSH
• Media Type: D
• Archive: No

aggregate mining activities will generate exceptionally high dust exposure creating a
health risk for these adjacent land owners over time. Of Greatest Concern: specifically,
is exposure to high levels of dust, silica dust (sand and gravel dust) is hazardous when
very small (respirable) particles are inhaled. These respirable dust particles can
penetrate deep into the lungs of humans causing disabling and sometimes fatal lung
diseases, including lung cancer, silicosis, and kidney disease.
B. Currently, the mines in the area are 90% exposed surfaces, fine grain sands, aggregate
surfaces, over burden piles, sands and gravel and 10% weeds creating an unnecessary
erodible and unstable dusty daily surface condition .
C. Mines in the region have mechanically exposed aggregate surface for years and decades
generating intensely fierce fugitive dust storms. Exposed aggregate surfaces include;
L mine pit perimeter roads, and internal roads,
fl. exposed 3:1 slopes,
iii. over burden piles,
iv. spoils piles,
v. processing piles,
vi. active mining face excavation,
vii. heavy haul truck transporting within the mine,
viii. gravel production stock piling and loading,
ix. ingress and egress dusty conditions.
D. The applicants Processing Plant Area is within 600 feet of these 25 year adjacent land
owners and will generate exceptionally high and unacceptable dust level exoosures.
L use of front end loaders,
fl. transporting aggregates
iii, ingress and egress loading of over the road haul trucks, more than a one and a
half miles (11/2) mi.) from the entrance of the mine in a north by northwest
direction will cause harmful and dangerous leaves of dust.
iv. harmful dust levels are expected from the applicant's circulation pattern
around the processing plant.
v. harmful dust levels are expected from the applicant's methods of mining that
utilizes haul trucks and lacks conveyor systems moving pit run closer to the
entrance for processing.
E. Acerbating dust throughout the mine area are the prevailing winds. Winds and breezes
occur daily as warm and cold air travels up and down the South Platte River.
F. Moderate to high winds prevail from the north and northwest and given the location of
the processing plant and many acres of exposed aggregate a dangerously unhealthy
living condition is created for the adjacent landowners.
G. Given the mine is being developed 600 feet northwest of this property owner and north
by northwest winds occur often, the exposure and health risk is unacceptable.
H. Finally, if the completed mine pit is to be used for water storage, once water releases
occur and the reservoir is dry, highly dusty conditions will continue to occur. Regionally,