Oklahoma Cleanup Standards for Hydrocarbon Contaminated Groundwater

Product

Parameter/ Constituent

Lab Test Protocol & Number*

Detection Level

Notification Level

Action Level

Cleanup Level

Gasoline, Diesel and Kerosene

TPH

EPA 8015

1mg/L

any amount above Action Level

> 2mg/L

site specific RBCA standards

Benzene

EPA 8015

1mg/L

any amount above Action Level

> 0.005mg/L

site specific RBCA standards

Toluene

EPA 8015

1mg/L

any amount above Action Level

> 1.0mg/L

site specific RBCA standards

Ethylbenzene

EPA 8015

1mg/L

any amount above Action Level

> 0.7mg/L

site specific RBCA standards

Xylenes

EPA 8020

1mg/L

any amount above Action Level

> 10.0mg/L

site specific RBCA standards

Note: Oklahoma uses a Risk Analysis in determining cleanup standards on a site-by-site basis.

* Whatever method is specified must be able to detect the most stringent cleanup levels. EPA Method 418.1 is not accepted testing method for TPH.

Contact: Dick Oppel, Oklahoma Corporation Commission, Underground Storage Tank Program, 405-522-5264



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