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Delaware
Cleanup Standards for Hydrocarbon Contaminated Groundwater
Note: The State of Delaware is in
the process of adopting a Risk Based Corrective Action (RBCA) Program, and
the Action/Cleanup levels shown below are still undergoing some revision.
Please contact the UST Branch for the most up-to-date RBSLs.
|
Product
|
Parameter/
Constituent
|
Lab
Test Protocol & Number
|
Tier
1 Screening Level at >50ft
to POE1
|
|
Gasoline/
Aviation Gasoline
|
Benzene
|
*
|
0.029mg/L
|
|
Toluene
|
*
|
7.3mg/L
|
|
Ethylbenzene
|
*
|
3.7mg/L
|
|
Xylenes
|
*
|
73mg/L
|
|
MTBE
|
*
|
0.18mg/L
|
|
Lead
|
*
|
0.015mg/L
|
|
EDB
|
*
|
0.00005mg/L
|
|
EDC
|
*
|
0.0094mg/L
|
|
Cumene
|
*
|
3.7mg/L
|
|
Naphthalene
|
*
|
0.16mg/L
|
|
Jet
fuel/ Kerosene
|
Benzene
|
*
|
0.029mg/L
|
|
Toluene
|
*
|
7.3mg/L
|
|
Ethylbenzene
|
*
|
3.7mg/L
|
|
Xylenes
|
*
|
73mg/L
|
|
EDC
|
*
|
0.0094mg/L
|
|
Cumene3
|
*
|
3.7mg/L
|
|
Naphthalene
|
*
|
15mg/L
|
|
Phenanthrene
|
*
|
1.1mg/L
|
|
Diesel
|
Benzene
|
*
|
0.029mg/L
|
|
Toluene
|
*
|
7.3mg/L
|
|
Ethylbenzene
|
*
|
3.7mg/L
|
|
Xylenes
|
*
|
73mg/L
|
|
Naphthalene
|
*
|
15mg/L
|
|
Phenanthrene
|
*
|
1.1mg/L
|
|
Chrysene
|
*
|
0.009mg/L
|
|
Acenaphthene
|
*
|
2.2mg/L
|
|
Heating
Fuel
|
Benzene
|
*
|
0.029mg/L
|
|
Toluene
|
*
|
7.3mg/L
|
|
Ethylbenzene
|
*
|
3.7mg/L
|
|
Xylenes
|
*
|
73mg/L
|
|
Chrysene
|
*
|
0.009mg/L
|
|
Acenaphthene
|
*
|
2.2mg/L
|
|
Naphthalene
|
*
|
15mg/L
|
|
Phenanthrene
|
*
|
1.1mg/L
|
|
Used
Oil
|
Benzene
|
*
|
0.029mg/L
|
|
Toluene
|
*
|
7.3mg/L
|
|
Ethylbenzene
|
*
|
3.7mg/L
|
|
Xylenes
|
*
|
73mg/L
|
|
Chrysene
|
*
|
0.009mg/L
|
|
Acenaphthene
|
*
|
2.2mg/L
|
|
Naphthalene
|
*
|
15mg/L
|
|
Phenanthrene
|
*
|
1.1mg/L
|
|
Lead2
|
*
|
0.015mg/L
|
* Contact Delaware UST Branch for required
methodologies and screening levels.
1 At
<50ft to Point Of Exposure (POE). RBSLs to other distances up to 500ft
from POE are available from the DE UST branch.
2
Lead-Samples collected from point-of-use must be analyzed for Total Lead;
samples collected from the aquifer must be analyzed for Dissolved Lead.
3 Cumene
analysis is not required for Kerosene.
Contact:
Patricia M. Ellis, Ph.D., Delaware Dept. of Natural
Resources & Environmental Control, 302-395-2500
E-mail:
pellis@state.de.us
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