For the pump room, storage area and toilet, forced ventilation of at least six air changes per hour shall be provided (from “Recommended Standards for Water Works,” a report of the Committee of the Great Lakes, Upper Mississippi River Board of State Sanitary Engineers, 2003 Edition).

Air intake shall not be near the chlorine room exhaust, if there is a chlorination facility attached to the pumping station.

For storage and toilet areas, separate intake louvers for outside air may not be needed; infiltration and pull air from the pump room may be adequate.

A small centrifugal exhauster fan shall be installed in the restroom areas.

For the generator room (as applicable), in addition to the normal ventilation, ample flow of air to support combustion and to dissipate the heat produced in the combustion process of the diesel engine shall be provided. Design shall be based on the air requirements for the size of generator set being used.

Ventilation system noise levels shall be taken into account in determining the overall property line noise levels. (28-ME-DG-02 § 18.1)