OAR 340-040-0135
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Modification to the Maximum Measurable Level

(1)

The Department shall follow its established schedule for periodic review of all of its rules to determine that all current maximum measurable levels duly adopted by the Commission remain appropriate.

(2)

If a maximum measurable level is based on a federal standard and that standard is duly modified by the authorized federal agency, the Department shall reevaluate the Commission’s adopted maximum measurable level in conjunction with the Department’s tri-annual review of water quality standards or before, if the Department considers it necessary to do so. The Department may, after that re-evaluation, either propose to take no action or propose a change to the maximum measurable level, pursuant to these rules.

(3)

The Department may, at any time pertinent scientifically valid information becomes available, propose a change to a maximum measurable level or propose a new maximum measurable level for any substance of concern or contaminant pursuant to the procedures set forth in these rules.

(4)

The Department may, at any time pertinent scientifically valid information on degradates or metabolites of a parent compound, or interactions thereof, becomes available, propose a change to an existing maximum measurable level or propose a new maximum measurable level for any substance of concern or contaminant pursuant to the procedures set forth in these rules.

Source: Rule 340-040-0135 — Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Modification to the Maximum Measurable Level, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-040-0135.

340‑040‑0001
Preface 340‑040‑0010
Definitions 340‑040‑0020
General Policies 340‑040‑0030
Permitted Operations 340‑040‑0040
Remedial Investigation and Feasibility Study 340‑040‑0050
Selection of the Remedial Action 340‑040‑0060
Non-Permitted Activities 340‑040‑0070
On-Site Sewage Disposal: Area Wide Management 340‑040‑0080
Numerical Groundwater Quality Reference Levels and Guidance Levels 340‑040‑0090
Interim Standards for Maximum Measurable Levels of Contaminants in Groundwater to be Used in the Designation of a Groundwater Management Area 340‑040‑0100
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Statement of Purpose 340‑040‑0105
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Definitions 340‑040‑0108
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: General Policies 340‑040‑0110
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Substances Regulated Under These Rules 340‑040‑0120
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Notice of Intent to Propose Contaminants for Adoption of a Maximum Measurable Level 340‑040‑0125
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Methods to Establish Maximum Measurable Levels 340‑040‑0130
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Human Health and Environmental Advisories 340‑040‑0135
Method and Criteria for Establishment of Maximum Measurable Levels of Contaminants in Groundwater: Modification to the Maximum Measurable Level 340‑040‑0140
Wellhead Protection: Statement of Purpose 340‑040‑0150
Wellhead Protection: Definitions 340‑040‑0160
Wellhead Protection: General Policies 340‑040‑0170
Wellhead Protection: Required Elements of A Wellhead Protection Plan 340‑040‑0180
Wellhead Protection: Certification Procedure 340‑040‑0190
Wellhead Protection: Update Procedure 340‑040‑0200
Wellhead Protection: Decertification Procedure 340‑040‑0210
Wellhead Protection: Appeal Procedure
Last Updated

Jun. 8, 2021

Rule 340-040-0135’s source at or​.us