California Code of Regulations
Title 23 - Waters
Division 3 - State Water Resources Control Board and Regional Water Quality Control Boards
Chapter 26 - Wastewater Treatment Plant Classification, Operator Certification, and Contract Operator Registration
Article 2 - Classification of Wastewater Treatment Plants, Owner Reporting Requirements, and Criteria for a Class I Wastewater Treatment Plant
Section 3677.3 - Changes to the Operation of an Exempt Wastewater Treatment Plant

(a) At least 60 days before implementing any changes to the operation of an exempt wastewater treatment plant, the owner shall notify the Office of Operator Certification in writing of the proposed changes.

(b) Within 30 days of receiving notice of proposed changes to the operation of an exempt wastewater treatment plant, the Office of Operator Certification shall provide written notification of whether the wastewater treatment plant will remain exempt if the proposed changes are implemented.

(c) The owner shall notify the Office of Operator Certification in writing if the owner decides to implement proposed changes that the Office of Operator Certification determined will result in revocation of the exempt status of the wastewater treatment plant.

(d) The Office of Operator Certification shall revoke the wastewater treatment plant's exemption if the owner implements changes that result in the wastewater treatment plant no longer meeting the criteria for exemption in section 3677.2(c).

(e) If a wastewater treatment plant's exemption is revoked pursuant to this section, the owner shall, within 365 days from the date of the revocation, staff the wastewater treatment plant with certified operators of the appropriate grade level as set forth in sections 3680 and 3680.1.