La. Admin. Code tit. 33 § V-2602

Current through Register Vol. 50, No. 9, September 20, 2024

Section V-2602 - Grandfathered Corrective Action Management Units (CAMUs)

A. To implement remedies under LAC 33:V.3322 or RCRA Section 3008(h), or to implement remedies at a permitted facility that is not subject to LAC 33:V.3322, the administrative authority may designate an area at the facility as a CAMU under the requirements in this Section. CAMU means an area within a facility that is used only for managing remediation wastes for implementing corrective action or cleanup at the facility. A CAMU must be located within the contiguous property under the control of the owner or operator where the wastes to be managed in the CAMU originated. One or more CAMUs may be designated at a facility.

1. Placement of remediation wastes into or within a CAMU does not constitute land disposal of hazardous wastes.

2. Consolidation or placement of remediation wastes into or within a CAMU does not constitute creation of a unit subject to minimum technology requirements.

B. The administrative authority may designate a regulated unit (as defined in LAC 33:V.3301.B) as a CAMU, or may incorporate a regulated unit into a CAMU, under the following conditions.

1. T he regulated unit is closed or closing, meaning it has begun the closure process under LAC 33:V.3513 or 4383.

2. Inclusion of the regulated unit will enhance implementation of effective, protective, and reliable remedial actions for the facility.

3. The LAC 33:V.Chapters 33, 35, and 37 requirements and the unit-specific requirements of Chapters 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, and 43 that applied to that regulated unit shall continue to apply to that portion of the CAMU after incorporation into the CAMU.

C. The administrative authority shall designate a CAMU in accordance with the following.

1. The CAMU shall facilitate the implementation of reliable, effective, protective, and cost-effective remedies.

2. Waste management activities associated with the CAMU shall not create unacceptable risks to humans or to the environment resulting from exposure to hazardous wastes or hazardous constituents.

3. The CAMU shall include uncontaminated areas of the facility only if including such areas for the purpose of managing remediation waste is more protective than management of such wastes at contaminated areas of the facility.

4. Areas within the CAMU where wastes remain in place after closure of the CAMU shall be managed and contained so as to minimize future releases, to the extent practicable.

5. The CAMU shall expedite the timing of remedial activity implementation, when appropriate and practicable.

6. The CAMU shall enable the use, when appropriate, of treatment technologies (including innovative technologies) to enhance the long-term effectiveness of remedial actions by reducing the toxicity, mobility, or volume of wastes that will remain in place after closure of the CAMU.

7. The CAMU shall, to the extent practicable, minimize the land area of the facility upon which wastes will remain in place after closure of the CAMU.

D. The owner/operator shall provide sufficient information to enable the administrative authority to designate a CAMU in accordance with the criteria in LAC 33:V.2603.

E. The administrative authority shall specify, in the permit or order, requirements for CAMUs, which include the following.

1. The areal configuration of the CAMU shall be provided.

2. Requirements for remediation waste management shall include the specification of applicable design, operation, and closure requirements.

3. Requirements for groundwater monitoring shall be sufficient to:

a. continue to detect and to characterize the nature, extent, concentration, direction, and movement of existing releases of hazardous constituents in groundwater from sources located within the CAMU; and

b. detect and subsequently characterize releases of hazardous constituents to groundwater that may occur from areas of the CAMU in which wastes will remain in place after closure of the CAMU.

4. Closure and post-closure requirements shall include the following:

a. closure of CAMUs, which shall:

i. minimize the need for further maintenance; and

ii. control, minimize, or eliminate, to the extent necessary to protect human health and the environment, for areas where wastes remain in place, post-closure escape of hazardous waste, hazardous constituents, leachate, contaminated runoff, or hazardous waste decomposition products to the ground, to surface waters, or to the atmosphere;

b. requirements for closure of CAMUs that shall include the following, as appropriate and as deemed necessary by the administrative authority, for a given CAMU:

i. requirements for excavation, removal, treatment, or containment of wastes;

ii. for areas in which wastes will remain after closure of the CAMU, requirements for capping of such areas; and

iii. requirements for removal and decontamination of equipment, devices, and structures used in remediation waste management activities within the CAMU;

c. in establishing specific closure requirements for CAMUs under LAC 33:V.2603.E, the administrative authority shall consider the following factors:

i. CAMU characteristics;

ii. volume of wastes that remain in place after closure;

iii. potential for releases from the CAMU;

iv. physical and chemical characteristics of the waste;

v. hydrological and other relevant environmental conditions at the facility that may influence the migration of any potential or actual releases; and

vi. potential for exposure of humans and environmental receptors if releases were to occur from the CAMU; and

d. post-closure requirements, as necessary to protect human health and the environment, including for areas where wastes will remain in place, monitoring and maintenance activities, and the frequency with which such activities shall be performed, to ensure the integrity of any cap, final cover, or other containment system.

F. The administrative authority shall document the rationale for designating CAMUs and shall make such documentation available to the public.

G. Incorporation of a CAMU into an existing permit must be approved by the administrative authority according to the procedures for department-initiated permit modifications under LAC 33:V.323 or according to the permit modification procedures of LAC 33:V.321.C.

H. The designation of a CAMU does not change EPA's existing authority to address cleanup levels, media-specific points of compliance to be applied to remediation at a facility, or other remedy selection decisions.

La. Admin. Code tit. 33, § V-2602

Promulgated by the Department of Environmental Quality, Office of Environmental Assessment, Environmental Planning Division, LR 28:1191 (June 2002).

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:2180 et seq.