OAR 340-122-0250
Cleanup Rules for Leaking Petroleum UST Systems: Corrective Action Plan


(1)

Subject to section (12) of this rule, a responsible person proposing to remediate a site to risk-based remediation levels must submit a corrective action plan for responding to contaminated soil and groundwater.

(2)

A remediation level must be proposed for each contaminant of concern in soil and groundwater based on:

(a)

Site-specific risk-based concentrations calculated according to OAR 340-122-0244 (Cleanup Rules for Leaking Petroleum UST Systems: Risk-Based Concentrations), or generic risk-based concentrations developed under OAR 340-122-0252 (Cleanup Rules for Leaking Petroleum UST Systems: Generic Remedies);

(b)

Current or future reasonably likely significant adverse effects to beneficial uses of groundwater or surface water not addressed by risk-based concentrations under subsection (a) of this section; and

(c)

Proposed institutional and engineering controls, if any.

(3)

The corrective action plan must be submitted to the Department within 45 days of completing field work necessary for its development, or within a longer period of time approved by the Department, and must contain sufficient information to support the proposed remedial measures including, at a minimum:

(a)

The site history and a summary of all previous actions taken in response to the release;

(b)

A summary and analysis of all sampling data, including site maps, drawn to scale, showing the magnitude and extent of contamination;

(c)

The conceptual site model and an explanation for each remediation level proposed under section (2) of this rule;

(d)

Land and water use information necessary to support the conceptual site model, including current uses, and comprehensive plan and zoning designations for adjacent properties, and all properties potentially affected by the release; and

(e)

A discussion of all remedial measures including institutional and engineering controls, addressing any contamination exceeding acceptable risk levels and non-risk impacts.

(4)

A corrective action plan which contains a proposal for groundwater monitoring or remediation must include:

(a)

A recommendation for which monitoring well or wells will serve as compliance points for the site based on the following minimum requirements:

(A)

Compliance monitoring points must define an area surrounding the source of contamination, outside of which remediation levels must be attained and maintained.

(B)

The compliance monitoring points shall establish a vertical boundary extending from the uppermost level of the saturated zone to the lowest depth which could potentially be affected by the release;

(C)

Compliance monitoring points must be located close enough to the source of contamination so that they reasonably detect contamination, if present; and

(D)

Compliance monitoring points may not be located beyond the source property boundary except as approved by the Department.

(b)

At least one monitoring point which measures contaminant concentrations in the source area.

(c)

A discussion of all actions being proposed to monitor or remediate the groundwater contamination. These actions might not require sampling from all wells or monitoring for all contaminants detected during the investigation, provided:

(A)

Hydrogeological and contamination data, as well as compliance point requirements, support the wells proposed for monitoring;

(B)

Appropriate indicator compounds are analyzed at regular intervals during remediation and monitoring;

(C)

Analytical parameters are consistent with remediation levels; and

(D)

All contaminants of concern detected during the investigation are sampled and analyzed to confirm preliminary and final compliance.

(5)

The Department shall approve the corrective action plan only after ensuring that implementation of the plan, including any applicable remediation levels, will adequately protect human health, safety, and welfare and the environment, and after providing any public notice consistent with the requirements of OAR 340-122-0260 (Cleanup Rules for Leaking Petroleum UST Systems: Public Participation).

(6)

Upon approval of the corrective action plan by the Department, a responsible person must implement the plan, including any modifications to the plan made by the Department. The responsible person must monitor, evaluate, and report the results of implementing the plan in accordance with a schedule and in a format established by the Department.

(7)

For remediation of groundwater contamination:

(a)

Preliminary compliance is attained when the first sampling event following the installation of all required monitoring wells shows that all samples collected from all compliance monitoring points and out to the edge of the contaminant plume meet the remediation levels for all contaminants of concern. When preliminary compliance has been attained, the responsible person may suspend groundwater treatment system operation at any time. The Department may require that a suspended groundwater treatment system be reactivated if any of the water samples collected at or beyond the compliance monitoring points during the required period of monitoring are found to contain any contaminant concentrations in excess of remediation levels. If the treatment system is reactivated, treatment must be continued until preliminary compliance is again attained.

(b)

Final compliance is attained when:

(A)

A minimum of four consecutive quarterly groundwater monitoring events has been completed following shutdown of the treatment system, and all samples collected from all compliance monitoring points and out to the edge of the contaminant plume meet the remediation levels for all contaminants of concern. The four consecutive sampling events may include the sampling event at which preliminary compliance is achieved, provided that all contaminants of concern are included in the sampling and analysis;

(B)

Site-specific hydrogeologic and contaminant level data are presented in a written report to the Department demonstrating that any remaining contaminants will not migrate beyond the compliance monitoring points at levels exceeding remediation levels; and

(C)

A final report containing a summary of all groundwater data collected at the site, an analysis of the data demonstrating that the final compliance requirements have been met, and any other relevant information deemed necessary by the Department to demonstrate that all of the requirements of this rule have been met is submitted to and approved by the Department.

(c)

Notwithstanding final compliance, the Department may require continued monitoring of groundwater in situations where site-specific conditions warrant such measures.

(8)

The responsible person must submit additional information or develop and submit a modified correction action plan at the Department’s request if the Department determines that remedial activities must be modified or that treatment system performance (e.g., rate of cleanup) is not achieving results as projected in the approved corrective action plan.

(9)

When all requirements of an approved corrective action plan have been met to the Department’s satisfaction, the Department shall issue a no further action letter to the responsible person.

(10)

In the event that contamination exceeding risk-based concentrations remains, the Department may require the implementation of institutional or engineering controls necessary to ensure protection of public health, safety, and welfare and the environment.

(11)

A responsible person may, in the interest of minimizing environmental contamination and promoting more effective remediation, begin remediation of soil and groundwater before the corrective action plan is approved provided that the responsible person:

(a)

Notifies the Department of its intention to begin remediation;

(b)

Complies with any conditions imposed by the Department including halting remediation or mitigating adverse consequences from remedial activities; and

(c)

Incorporates the self-initiated remedial measures in the corrective action plan that is submitted to the Department for approval.

(12)

The requirement that a corrective action plan be used does not apply to low-impact site closures, or to generic remedies unless specified by the Department in generic remedy guidance. However, the Department may require that a corrective action plan be developed and implemented for sites being considered for remediation under the soil matrix cleanup options (OAR 340-122-0320 (Cleanup Rules for Leaking Petroleum UST Systems: Soil Matrix Cleanup Options)), as low-impact sites (340-122-0243 (Cleanup Rules for Leaking Petroleum UST Systems: Low-Impact Sites)), or under generic remedies (340-122-0252 (Cleanup Rules for Leaking Petroleum UST Systems: Generic Remedies)) if, upon review of available information, the Department determines that conditions at the site are not appropriate for the initial proposed remedial option or the proposal does not provide adequate protection to human health, safety, and welfare and the environment.

Source: Rule 340-122-0250 — Cleanup Rules for Leaking Petroleum UST Systems: Corrective Action Plan, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-122-0250.

340‑122‑0010
Purpose
340‑122‑0030
Scope and Applicability
340‑122‑0040
Standards
340‑122‑0047
Generic Remedies
340‑122‑0050
Activities
340‑122‑0070
Removal
340‑122‑0071
Site Evaluation
340‑122‑0072
Preliminary Assessments
340‑122‑0073
Confirmation of a Release
340‑122‑0074
Development of Confirmed Release List
340‑122‑0075
Development of Inventory
340‑122‑0076
Inventory Ranking
340‑122‑0077
Initiation of Process for Delisting Facilities from the Confirmed Release List and Inventory
340‑122‑0078
Inventory Delisting — Public Notice and Participation
340‑122‑0079
Delisting — Determination by the Director
340‑122‑0080
Remedial Investigation
340‑122‑0084
Risk Assessment
340‑122‑0085
Feasibility Study
340‑122‑0090
Selection or Approval of the Remedial Action
340‑122‑0100
Public Notice and Participation
340‑122‑0110
Administrative Record
340‑122‑0115
Definitions
340‑122‑0120
Security Interest Exemption
340‑122‑0130
Involuntary Acquisition of Property by the Government
340‑122‑0140
Exemption for ORS Chapter 709 Trust Companies Acting as Fiduciaries
340‑122‑0205
Cleanup Rules for Leaking Petroleum UST Systems: Purpose
340‑122‑0210
Cleanup Rules for Leaking Petroleum UST Systems: Definitions
340‑122‑0215
Cleanup Rules for Leaking Petroleum UST Systems: Scope and Applicability
340‑122‑0217
Cleanup Rules for Leaking Petroleum UST Systems: Requirements and Remediation Options
340‑122‑0218
Cleanup Rules for Leaking Petroleum UST Systems: Sampling and Analysis
340‑122‑0220
Cleanup Rules for Leaking Petroleum UST Systems: Initial Response
340‑122‑0225
Cleanup Rules for Leaking Petroleum UST Systems: Initial Abatement Measures and Site Check
340‑122‑0230
Cleanup Rules for Leaking Petroleum UST Systems: Initial Site Characterization
340‑122‑0235
Cleanup Rules for Leaking Petroleum UST Systems: Free Product Removal
340‑122‑0240
Cleanup Rules for Leaking Petroleum UST Systems: Investigation for Magnitude and Extent of Contamination
340‑122‑0243
Cleanup Rules for Leaking Petroleum UST Systems: Low-Impact Sites
340‑122‑0244
Cleanup Rules for Leaking Petroleum UST Systems: Risk-Based Concentrations
340‑122‑0250
Cleanup Rules for Leaking Petroleum UST Systems: Corrective Action Plan
340‑122‑0252
Cleanup Rules for Leaking Petroleum UST Systems: Generic Remedies
340‑122‑0260
Cleanup Rules for Leaking Petroleum UST Systems: Public Participation
340‑122‑0320
Cleanup Rules for Leaking Petroleum UST Systems: Soil Matrix Cleanup Options
340‑122‑0325
Cleanup Rules for Leaking Petroleum UST Systems: Evaluation of Matrix Cleanup Level
340‑122‑0330
Cleanup Rules for Leaking Petroleum UST Systems: Evaluation Parameters
340‑122‑0335
Cleanup Rules for Leaking Petroleum UST Systems: Numeric Soil Cleanup Standards
340‑122‑0340
Cleanup Rules for Leaking Petroleum UST Systems: Sample Number and Location
340‑122‑0345
Cleanup Rules for Leaking Petroleum UST Systems: Sample Collection Methods
340‑122‑0355
Cleanup Rules for Leaking Petroleum UST Systems: Evaluation of Analytical Results
340‑122‑0360
Cleanup Rules for Leaking Petroleum UST Systems: Reporting Requirements
340‑122‑0510
Solid Waste Orphan Site Account: Purpose
340‑122‑0520
Solid Waste Orphan Site Account: Definitions
340‑122‑0530
Solid Waste Orphan Site Account: Eligible Sites
340‑122‑0540
Solid Waste Orphan Site Account: Funding Factors
340‑122‑0550
Solid Waste Orphan Site Account: Grants and Loans
340‑122‑0560
Solid Waste Orphan Site Account: Application Process
340‑122‑0570
Solid Waste Orphan Site Account: Funding Conditions
340‑122‑0580
Solid Waste Orphan Site Account: Application of Surcharge Proceeds
340‑122‑0590
Solid Waste Orphan Site Account: Limitations
Last Updated

Jun. 8, 2021

Rule 340-122-0250’s source at or​.us