Oregon Cleanup Standards for Hydrocarbon Contaminated Groundwater

Product

Parameter/ Constituent

Lab Test Protocol & Number

Notification Level

Cleanup Level

Gasoline

BTEX

SW-846 Methods or Department-approved alternatives

any amount

site specific *

PAHs

SW-846 Methods or Department-approved alternatives

any amount

site specific *

MTBE

SW-846 Methods or Department-approved alternatives

any amount

site specific *

EDB, EDC

SW-846 Methods or Department-approved alternatives

any amount

site specific *

isopropylbenzene

           

SW-846 Methods or Department approved alternative

any amount

site specific*

n-propylbenzene

SW-846 Methods or Department approved alternative

any amount

site specific*

1,2,4-trimethylbenzene

SW-846 Methods or Department approved alternative

any amount

site specific*

1,3,5-trimethylbenzene

SW-846 Methods or Department approved alternative

any amount

site specific*

Lead

SW-846 Methods or Department-approved alternatives

any amount

site specific *

Diesel

BTEX

SW-846 Methods or Department-approved alternatives

any amount

site specific *

PAHs

SW-846 Methods or Department-approved alternatives

any amount

site specific *

Waste Oil

BTEX

SW-846 Methods or Department-approved alternatives

any amount

site specific *

PAHs

SW-846 Methods or Department-approved alternatives

any amount

site specific *

PCBs

SW-846 Methods or Department-approved alternatives

any amount

site specific *

Chlorinated Solvents

SW-846 Methods or Department-approved alternatives

any amount

site specific *

Lead, Cadmium, Chromium

SW-846 Methods or Department-approved alternatives

any amount

site specific *

 

MTBE

SW-846 Methods or Department-approved alternatives

any amount

site specific *

 

isopropylbenzene

           

SW-846 Methods or Department approved alternative

any amount

site specific*

 

n-propylbenzene

SW-846 Methods or Department approved alternative

any amount

site specific*

 

1,2,4-trimethylbenzene

SW-846 Methods or Department approved alternative

any amount

site specific*

 

1,3,5-trimethylbenzene

SW-846 Methods or Department approved alternative

any amount

site specific*

*Note: Oregon's UST Cleanup Rules (OAR 340-122-0205 through 340-122-0360) provide responsible parties with four options for remediating sites;

1)       soil contamination may be remediated to site-specific TPH levels,

2)       the site may be shown to meet a set of "Low-impact Site" requirements,

3)       the site may be remediated to risk-based concentrations (RBCs) which may be  either generic standards taken from Department guidance, or site-specific standards developed by the responsible party or

4)       the site may be shown to meet the requirements of an applicable generic remedy developed by the Department.

Cleanup levels for individual constituents are risk-based and depend on site-specific exposure pathways.  The Department has developed generic risk-based concentrations, but there are too many to list in this table.  All risk-based standards must meet statutory requirements of 1-in-a-miliion excess cancer risk for carcinogens and a hazard index of one for non-carcinogens.

Contact: Michael Anderson, Oregon Department of Environmental Quality, 503-229-6764

E-mail: anderson.michael@deq.state.or.us

Web Site: http://www.deq.state.or.us/wmc/tank/rbdm.htm

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