HRS Rule, Table 2-5, Page 51591

Tier	Measure	Units	Equation for assigning value^a

A	Hazardous constituent quantity (C)	lb	C

B^b	Hazardous wastestream quantity (W)	lb	W/5,000

C^b	Volume (V)

	Landfill	yd³	V/2,500
	Surface impoundment	yd³	V/2.5
	Surface impoundment (buried /backfilled)	yd³	V/2.5
	Drums^c	gallon	V/500
	Tanks and containers other than drums	yd³	V/2.5
	Contaminated soil	yd³	V/2,500
	Pile	yd³	V/2.5
	Other	yd³	V/2.5

D^b	Area (A)

	Landfill	ft²	A/3,400
	Surface impoundment	ft²	A/13
	Surface impoundment (buried/backfilled)	ft²	A/13
	Land treatment	ft²	A/270
	Pile^d	ft²	A/13
	Contaminated soil	ft²	A/34,000

^a Do not round to nearest integer.

^b Convert volume to mass when necessary: 1 ton=2,000 pounds=1 cubic yard=4 drums=200 gallons.

^c If actual volume of drums is unavailable, assume 1 drum=50 gallons.

^d Use land surface area under pile, not surface area of pile.

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