priority 1 and 2 problem types

Problem Type	Symbol	Measured As
Clogged Stream Lands	CSL	Acres
Clogged Streams	CS	Miles
Dangerous Highwall	DH	Linear Feet
Dangerous Impoundments	DI	Count
Dangerous Pile and Embankment	DPE	Acres
Dangerous Slides	DS	Acres
Gases: Hazardous/Explosive	GHE	Count
Hazardous Equipment & Facilities	HEF	Count
Hazardous Water Body	HWB	Count
Industrial/Residential Waste	IRW	Acres
Polluted Water: Agr, and Indust.	PWAI	Count
Polluted Water: Human Consumption	PWHC	Count
Portals	P	Count
Subsidence	S	Acres
Surface Burning	SB	Acres
Underground Mine Fire	UMF	Acres
Vertical Opening	VO	Count

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 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. 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

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. 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 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. ny 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 p

ublic 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.

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