Development standards

All new structures in the overlay district, and all renovations of existing structures in the overlay district for which a building permit is required, shall comply with the following standards. All standards apply to the entire overlay district unless otherwise specified.

A. Sink drains. In any building where hazardous materials are likely to enter sinks, all sinks shall be directly connected to an above-ground holding tank separated from the onsite wastewater treatment system. The applicant shall submit details of the tank construction and conveyance system design, information about controls and alarm systems, and a service contract for pump-out and off-site disposal.

B. Floor drains. New structures shall be constructed with floor drains that empty into an above-ground holding tank separated from the onsite wastewater treatment system. The applicant shall submit details of the tank construction and conveyance system design, information about controls and alarm systems, and a service contract for pump-out and off-site disposal.

C. Indoor storage of hazardous materials. Every indoor area where hazardous materials will be stored shall be enclosed by a secondary containment system with a capacity of 110% of the volume of material in the storage area.

D. Outdoor storage of hazardous materials. Every outdoor area where hazardous materials will be stored shall have a roof, shall be enclosed on three sides, and shall be constructed to prevent precipitation from flowing into the area. If the area will be used to store liquid materials, the area shall be designed to hold 110% of the liquid stored inside it. This standard shall not apply to propane gas sales and delivery. (Ord. dated 5-19-26)

E. Loading areas. All loading areas where hazardous materials will be handled shall be enclosed by a roof and two sides to prevent precipitation from entering the area. This standard shall not apply to propane gas sales and delivery. (Ord. dated 5-19-26)

F. Dumpsters. Dumpsters shall have drain plugs intact and shall be covered or located under a roof.

G. Exterior catch basins. All exterior catch basins, trench drains, and other conveyance systems for collecting and managing stormwater shall be equipped with sumps and water quality hoods to prevent discharge of spilled oil or petroleum products.

H. Above-ground storage tanks. Every interior and exterior above-ground storage tank for fuel or heating oil, except those in single-family and two-family residential structures, shall include a secondary containment system with a capacity that is 110% of the tank volume. The system shall include a dedicated basin, tub or tray specifically manufactured for use as a secondary containment area for petroleum products.

I. Underground storage tanks. Installation of new underground storage tanks for hazardous materials, except those used for storage of propane, is prohibited.

(Ord. dated 7-18-23; Ord. dated 5-19-26)