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| Delaware
Cleanup Standards for Hydrocarbon Contaminated Soil
1
Delaware's Tier 0 applies to all new sites entering the program, such as
at removal or abandonment. An existing leaking underground storage tank
(LUST) site may enter at Tiers 1,2 or 3, depending on the amount of
site-specific data collected. Above Tier 0, TPH-GRO and TPH-DRO are
replaced by a list of chemicals of concern. 2
Analysis for MTBE may not require the Department's discretion when
conclusive documentation can be presented describing that the tank's
period of use ended prior to 1978. For
gasoline UST's only, lead, EDB, and EDC analysis is required unless
conclusive documentation is presented and pre-approved by the UST Branch
that the gasoline UST was installed after 1/1/88.
Lead, EDB and EDC analysis is always required for aviation gasoline
USTS. 3 Used
Oil is defined as described in Part A, Section 2, of Delaware's UST
Regulations and Delaware's Hazardous Waste Management Branch Regulations. 4
"Other" may mean Metals, Volatiles, Semivolatiles, EDB, EDC, or
other as required on a site-specific basis. * Contact Delaware's UST Branch for required
methodologies. Contact:
Patricia M. Ellis, Ph.D., Delaware Department of Natural Resources &
Environmental Control, 302-395-2500 E-mail:
pellis@state.de.us Top |
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