Utah has implemented Tier 1 RBCA for leaking UST sites. The following Cleanup levels are "screening levels" and can only be applied when buildings, utility lines, and property lines are a distance greater than 30 feet from the contaminated source, and when water supply wells and surface water are greater than 500 feet from the source.  Utah's RBCA Tier 2 process for determining site-specific cleanup levels can be found on our Web Site.

Utah Action Levels for Groundwater

Product

Groundwater

Benzene

0.3mg/L

Toluene

7mg/L

Ethylbenzene

4mg/L

Xylenes

73mg/L

MTBE

0.2

Naphthalene

0.1mg/L

TPH-gasoline

10mg/L

TPH-diesel

10mg/L

Oil & Grease/TRPH

10mg/L


Contact: Robin D. Jenkins, Division of Environmental Response and Remediation, 801-536-4100

Web Site: http://www.deq.state.ut.us



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