Delaware Cleanup Standards for Hydrocarbon Contaminated Groundwater
 

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.

Note: Standards regarding both TAME and TBA can be viewed on the DNREC website before the end of 2002.

Contact: Patricia M. Ellis, Ph.D., Delaware Dept. of Natural Resources & Environmental Control, 302-395-2500

E-mail: pellis@state.de.us

Website: http://www.dnrec.state.de.us/dnrec2000/divisions/awm/usd




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