Table 5-2 of the HRS Rule (page 51647)

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)
	Surface impoundment ^c	yd³	V/2.5

	Drums^d	gallon	V/500
	Tanks and containers other than drums	yd³	V/2.5

D^b	Area (A)

	Landfill	ft²	A/34,000
	Surface impoundment	ft²	A/13
	Surface impoundment (buried/backfilled)	ft²	A/13
	Land treatment	ft²	A/270
	Pile^d	ft²	A/34
	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 Use volume measure only for surface impoundments containing hazardous substances present as liquids. Use area measures in Tier D for dry surface impoundments and for buried/backfilled surface impoundments.

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

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

Superfund Help: Acronyms | Topics | Frequent Questions | Publications | Sitemap

OSWER Home | Superfund Home | Innovative Technologies Home

Table 5-2 of the HRS Rule (page 51647)

Local Navigation