Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 570 - COMBINED SEWER OVERFLOW ABATEMENT
Section 096-570-1 - Criteria for acceptable CSOs

Universal Citation: 06 ME Code Rules ยง 096-570-1

Current through 2024-38, September 18, 2024

A discharge from a combined overflow point within a sewerage system is permitted only when the discharge meets the following conditions.

A. Discharge in excess of design capacity. The discharge consists of wastewater in excess of design capacity of a municipal or quasi-municipal sewerage system, including pumps or treatment facilities, that conveys both sanitary wastes and stormwater in a single pipe system and that is in direct response to a storm event or snow melt;

B. Discharge not due to mechanical failure. The discharge is not the result of mechanical failure, improper design or inadequate operation or maintenance, and;

C. CSO Master Plan. The licensee is actively developing or implementing a CSO Master Plan in accordance with this chapter, and as approved by the department; or the licensee has implemented the CSO Master Plan and a discharge occurs that is caused by conditions exceeding those upon which the Plan is based.

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