Ala. Admin. Code r. 335-15-4 335-15-4-.05

Current through Register Vol. 42, No. 11, August 30, 2024

Section 335-15-4-.05 - Cleanup Requirements

(1)Cleanup levels.

(a) The participant, with the concurrence of the Department, shall consider impacts to human health and the environment. In establishing cleanup standards, cleanup levels may be based on specific requirements of relevant environmental laws or regulations (e.g., Clean Water Act, Clean Air Act, TSCA, RCRA, CERCLA, et al.), derived using the procedures outlined in Section 300.430(e)(2) of the National Oil and Hazardous Substances Pollution Contingency Plan ( 40 CFR Part 300 ), and/ or based upon the results of a site-specific risk assessment.

(b) The Department may set cleanup levels that reflect current and future use scenarios for the property as follows:

1. A site shall be deemed to have met the requirements for unrestricted use if the cleanup levels are derived in a manner consistent with Department or Environmental Protection Agency guidelines for assessing human and environmental health risks from hazardous constituents.

2. For sites that do not achieve the unrestricted use classification, restrictions on site use shall be applied to achieve cleanup standards. Restrictions shall include, but are not limited to, land use controls. The restrictions imposed upon a site shall be media-specific and may vary according to site-specific conditions.

(2)Remedial Action Measures. Cleanup levels for all media contaminated with hazardous constituents or hazardous wastes, that the applicant or the Department has reason to believe may have been released at the site shall be determined in accordance with 335-15-4-.05(3). Should the concentration of hazardous constituent(s) in an aquifer, surface water, soil, sediment or air exceed its cleanup level, the Department may require the voluntary cleanup plan to include measures as necessary to protect human health and the environment.

(3)Risk Assessment. Cleanup levels may be based upon a risk assessment that considers the site and all surrounding areas that may be impacted. This risk assessment must reflect current and future use scenarios.

(4)Property Use Considerations.

(a) A site shall be deemed to have met the requirements for unrestricted residential use if the cleanup level(s) satisfy the following criteria:

1. Is derived in a manner consistent with ADEM/EPA guidelines for assessing human and environmental health risks from hazardous constituents;

2. Is based on scientifically valid studies conducted in accordance with the Toxic Substances Control Act (TSCA) Good Laboratory Practice Standards (40 CFR Part 792, as amended), or equivalent;

3. Represents for human health cleanup levels to address carcinogens, a cumulative concentration associated with an excess upper bound lifetime cancer risk range of between 1 X 10-4 and 1 X 10-6 for carcinogens due to continuous constant lifetime exposure; and

4. Represents for human health cleanup levels to address noncarcinogens, a concentration to which the human population (including sensitive subgroups) could be exposed on a daily basis that is without appreciable risk of deleterious effects during a lifetime.

(b) Applies appropriate restrictions on future use for sites that do not achieve the unrestricted use classification. Restrictions shall include, but are not limited to, institutional and/or engineering controls. The restrictions imposed upon a site will be media-specific and may vary according to site-specific conditions. All use restrictions shall be described in the Certification of Compliance.

Ala. Admin. Code r. 335-15-4 335-15-4-.05

New Rule: Filed April 11, 2002; effective May 16, 2002. Amended: Filed October 21, 2004; effective November 25, 2004.

Amended by Alabama Administrative Monthly Volume XL, Issue No. 07, April 29, 2022, eff. 6/13/2022.

Amended by Alabama Administrative Monthly Volume XLII, Issue No. 05, February 29, 2024, eff. 4/14/2024.

Author: Fred A. Barnes; Keith N. West, Lawrence A. Norris; M. Gavin Adams; Austin R. Pierce; Pamela L. Monaghan; Crystal L. Collins

Statutory Authority:Code of Ala. 1975, §22-30E-4.