R311-211-5. Cleanup Standards

(a) The following shall be the minimum standards to be met for any cleanup of regulated substances, hazardous material, and hazardous substances at a UST or CERCLA facility in Utah:

(1) for water-related corrective action, the Maximum Contaminant Limits (MCLs) established under the federal Safe Drinking Water Act or other applicable water classifications and standards; and

(2) for air-related corrective action, the appropriate air quality standards established under the Federal Clean Air Act.

(3) Other standards as determined applicable by the Board may be utilized.

(b) Cleanup levels below the MCLs or other applicable water, soil, or air quality standards may be established by the Board on a case-by-case basis taking into consideration R311-211-3 and R311-211-4.

(c) In the case of contamination above the MCL or other applicable water, soil, or air quality standards, if, after evaluation of all alternatives, it is determined that applicable minimum standards cannot reasonably be achieved, cleanup levels above these minimum standards may be established on a case-by-case basis utilizing R311-211-3 and R311-211-4. In assessing the evaluation criteria, the following factors shall be considered:

(1) quantity of materials released;

(2) mobility, persistence, and toxicity of materials released;

(3) exposure pathways;

(4) extent of contamination and its relationship to present and potential surface and ground water locations and uses;

(5) type and levels of background contamination; and

(6) other relevant standards and factors as determined appropriate by the Board.