1. (a) Causes for modification. The following are causes for modification, but not revocation and reissuance, of permits; the following may be causes for revocation and reissuance, as well as modification, when the permittee requests or agrees.
2. (1) Alterations. There are material and substantial alterations or additions to the permitted facility or activity which occurred after permit issuance which justify the application of permit conditions that are different or absent in the existing permit.
3. (2) Information. The Director has received information. Permits may be modified during their terms for this cause only if the information was not available at the time of permit issuance, other than revised regulations, guidance, or test methods, and would have justified the application of different permit conditions at the time of issuance.
4. (3) New statutory requirements or regulations. The standards or regulations on which the permit was based have been changed by statute, through promulgation of new or amended standards or regulations, or by judicial decision after the permit was issued.
5. (4) Compliance schedules. The Director determines good cause exists for modification of a compliance schedule, such as an act of God, strike, flood, or materials shortage or other events over which the permittee has little or no control and for which there is no reasonably available remedy.

6. (5) Notwithstanding any other provision in Section R315-270-41, when a permit for a land disposal facility is reviewed by the Director under Subsection R315-270-50(d), the Director shall modify the permit as necessary to assure that the facility continues to comply with the currently applicable requirements in Rules R315-124, 260 through 266, and 270.

   1. (b) Causes for modification or revocation and reissuance. The following are causes to modify or, alternatively, revoke and reissue a permit:
7. (1) Cause exists for termination under Section R315-270-43, and the Director determines that modification or revocation and reissuance is appropriate.

8. (2) The Director has received notification; as required in the permit, see Subsection R315-270-30(l)(3); of a proposed transfer of the permit.

   1. (c) Facility siting. Suitability of the facility location will not be considered at the time of permit modification or revocation and reissuance unless new information or standards indicate that a threat to human health or the environment exists which was unknown at the time of permit issuance.

When the Director receives any information; for example, inspects the facility, receives information submitted by the permittee as required in the permit, see Section R315-270-30, receives a request for revocation and reissuance under Section R315-124-5 or conducts a review of the permit file; the Director may determine whether one or more of the causes listed in Subsections R315-270-41(a) and (b) for modification, or revocation and reissuance or both exist. If cause exists, the Director may modify or revoke and reissue the permit accordingly, subject to the limitations of Subsection R315-270-41(c), and may request an updated application if necessary. When a permit is modified, only the conditions subject to modification are reopened. If a permit is revoked and reissued, the entire permit is reopened and subject to revision and the permit is reissued for a new term. See Subsection R315-124-5(c)(2). If cause does not exist under Section R315-270-41, the Director shall not modify or revoke and reissue the permit, except on request of the permittee. If a permit modification is requested by the permittee, the Director shall approve or deny the request according to the procedures of Subsection R315-270-42. Otherwise, a draft permit shall be prepared and other procedures in Rule R315-124 followed.

KEY: hazardous waste

Date of Last Change: November 17, 2025

Notice of Continuation: December 11, 2025

Authorizing, and Implemented or Interpreted Law: 19-6-105; 19-6-106