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Abandoned Mine Land Program
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Priority 1 and 2 Problem Types
CS Clogged Stream
Any filing of a stream bed, usually in a narrow
valley, with AML-originated silt and debris sedimentation carried downstream
by surface runoff. The sedimentation causes temporary blocking of the stream
and flooding, posing a danger to improved property and human health, safety
and welfare. Clogged streams are measured in miles of stream that will
be dredged to abate the problem.
Those problems related to saturated ground
caused by mine drainage water adversely impacting domestic water supply,
human health condition or the structural integrity of an occupied dwelling
shall not be assigned to the CS or CSL keyword. Rather, problems associated
with domestic water supply or human health condition can be considered
as a Polluted Water Human Consumption (PWHC); problems associated with
structural integrity can be considered as a Dangerous Slide (DS).
CSL Clogged Stream Lands
Any AML-related surface mining spoil pile
and bank, mine waste and earth material disturbed by mining activity which
would be eroded and carried downstream by surface runoff, and deposited
in a stream bed (thus causing a clogged stream). This silt erosion contributes
to stream sedimentation and causes local flooding resulting in property
damage and a human health, safety and general welfare threat. Clogged stream
lands are measured in acres of land affected by spoil, mine waste and earth
material that are directly contributing to the clogged stream. Those piles
and banks which are identified and included in DH (dangerous highwall),
DS (dangerous slide) and DI (dangerous impoundment) shall not be repeated
for CSL problems.
DPE Dangerous Pile or Embankment
An AML-related mine waste pile or bank located
within close distance to a populated area, public road, or other area of
intense visitation, and posing a danger to public health, safety and general
welfare by adverse effect resulting from an unstable steep slope or wind-blown
particulate matter.
DH Dangerous Highwall
Any AML-related unprotected unreclaimed highwall
located in close proximity to a populated area, public road, or other area
of intense visitation, and posing a threat to public health, safety and
general welfare by falling from a highwall or for being hit by falling
rock.
DI Dangerous Impoundment
Any AML-related large-volume water impoundment
such as a mine waste embankment, sedimentation pond, or underground mine
water pool which poses a threat of flooding and catastrophic destruction
to downstream property and human health, safety, and general welfare in
the event of rupture or breach of the water retention structure.
The description of a DI must give evidence
of a weak, unstable, or otherwise inadequate impounding structure, such
as lack of an emergency spillway or improper primary spillway.
DS Dangerous Slide
Any AML-related land mass slide of surface-subsurface
soil, mine waste pile or bank, or surface mine spoil due to instability
of its own weight or lubricating effects of mine drainage water, that endangers
human health, safety and general welfare and destruction of improved property
located uphill or downhill from the land mass.
GHE Hazardous or Explosive Gases
AML-related dilapidated hazardous equipment
or facilities located within close proximity to populated areas, along
public roads, or other areas of intense visitation.
HEF Hazardous Equipment or Facilities
Any AML-related dilapidated hazardous equipment
or facilities located within close proximity to populated areas, along
public roads, or other areas of intense visitation.
HWB Hazardous Recreational Water Body
Any nonpolluted, impounded water, regardless
of depth or surface area, that is considered an attractive nuisance and
is located within close proximity to a populated area, public road, or
other areas of intense visitation.
The hazard must result from some AML-related
feature(s) such as steep or unstable banks, hidden underwater ledges, or
rocks or debris on the bottom. The fact that a pond is present is not sufficient
evidence of a hazard.
IRW Industrial or Residential Waste
Unauthorized use of AML-impacted areas for
residential or industrial waste disposal that poses a danger to public
health, safety and general welfare from unsanitary conditions or from the
toxic emissions from the burning refuse.
P Portal
Any AML-related surface entrance to a drift,
tunnel, adit or entry which is not sealed or barricaded, and is located
within close proximity to a populated area, public road or other area of
intense visitation, posing a threat to public safety and general welfare.
PWAI Polluted Water: Agricultural/Industrial
Any surface or subsurface water used for agricultural
or industrial purposes which does not meet standards (especially those
for suspended solids, acid or alkaline conditions, heavy metals concentrations,
or radioactivity) because of AML-related impact. (Note: the water must
currently be in use, and current test results demonstrating pollution are
recommended to be submitted with the Form OSM-76.)
PWHC Polluted Water: Human Consumption
Any surface or subsurface water used for human
consumption or recreational waters used for swimming that does not meet
standards (especially those for suspended solids, acid or alkaline conditions,
heavy metals concentrations, or radioactivity) because of AML-related impact.
(Note: the water must currently be in use, and current test results demonstrating
pollution are recommended to be submitted with the Form OSM-76.)
S Subsidence-Prone Area
Any surface expression of AML-related subsidence
such as tension cracks , potholes, troughs, shearing faults, or caving
caused by AML-related underground mine voids which damages property and
poses danger to human safety, health and general welfare. The age of the
subsidence occurrence is limited to the past 5 years.
SB Surface Burning
Any AML-related continuous combustion of mine
waste material resulting in smoke, haze, heat, or venting of hazardous
gases located within close distance to a populated area, public road or
other public use area and posing a danger to public health, safety and
general welfare. Burning must currently be occurring or be demonstrated
to occur on a regular basis. Burning in a mine dump, even if beneath the
surface of the material, is surface burning.
UMF Underground Mine Fire
Any AML-related continuous smoke, haze, heat,
or venting of hazardous gases from underground mine coal combustion posing
a danger to public health, safety and general welfare.
VO Vertical Opening
Any AML-related vertical or steeply-inclined
shaft or opening which is not sealed or barricaded, or a subsidence-caused
opening that is more than 5 years old and has become a hazard, regardless
of proximity to populated areas, public road or other area of intense visitation,
posing a threat to the public health, safety and general welfare.