43 CFR § 3173.18 - Modification of a commingling and allocation approval.

---
identifier: "/us/cfr/t43/s3173.18"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 3173.18 - Modification of a commingling and allocation approval."
title_number: 43
title_name: "Public Lands: Interior"
section_number: "3173.18"
section_name: "Modification of a commingling and allocation approval."
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "C"
subchapter_name: "MINERALS MANAGEMENT (3000)"
part_number: "3170"
part_name: "ONSHORE OIL AND GAS PRODUCTION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 396d and 2107; 30 U.S.C. 189, 306, 359, and 1751; and 43 U.S.C. 1732(b), 1733, and 1740."
regulatory_source: "81 FR 81421, Nov. 17, 2016, unless otherwise noted."
cfr_part: "3170"
---


# 3173.18 Modification of a commingling and allocation approval.

(a) A CAA must be modified when there is:

(1) A modification to the allocation agreement;

(2) Inclusion of additional leases, unit PAs, or CAs are proposed in the CAA; or

(3) Termination of or permanent production cessation from any of the leases, unit PAs, or CAs within the CAA.

(b) To request a modification of a CAA, all operators must submit to the AO:

(1) A completed Sundry Notice describing the modification requested;

(2) A new allocation methodology, including an allocation methodology which includes allocation of produced water and an example of how the methodology is applied, if appropriate; and

(3) Certification by each operator in the CAA that it agrees to the CAA modification.

(c) A change in operator does not trigger the need to modify a CAA.