(1) For purposes of this subchapter, the department adopts and incorporates by reference:

(a) Department Circular DEQ-7, "Montana Numeric Water Quality Standards" (February 2006);

(b) Montana Tier 1 Risk-Based Corrective Action Guidance for Petroleum Releases (RBCA) (October 2003);

(c) U.S. Environmental Protection Agency, "Region 9 Preliminary Remediation Goals" (February 10, 2003); and

(d) Reportable Quantities for Hazardous Substances under section 102(a) of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) published at 40 CFR Part 302 (2001).

(2) All references in this subchapter to the documents incorporated by reference in this rule are to the edition specified in this rule.

(3) Copies of the documents incorporated by reference in this rule may be obtained from the Department of Environmental Quality, P.O. Box 200901, Helena, MT 59620-0901.