Architects & Contractors

FOG Related Information for Architects & Contractors

All new gravity grease interceptors (GGIs) for new construction projects are required to meet the minimum sizing requirements as determined by the City's FOG Program. Minimum sizing requirements are based on food service establishment (FSE) classification. GGIs shall ONLY be purchased from a City of Dothan approved manufacturer and installed to the City's installation requirements. Please contact the FOG Program Coordinator at 334-615-4458 for assistance.

Grease Control Equipment Sizing

The minimum acceptable size of grease control equipment for each newly constructed FSE Classification will be as follows:

(1) Class 1: 20-gallons per minute/40 pound Grease Trap (Hydro-Mechanical Grease Interceptor (HGI))

(2) Class 2: 1,000-gallon Gravity Grease Interceptor (GGI)

(3) Class 3: 1,500-gallon Gravity Grease Interceptor (GGI)

(4) Class 4: 2,000-gallon Gravity Grease Interceptor (GGI)

(5) Class 5: 2,000-gallon Gravity Grease Interceptor (GGI)

The grease control equipment minimum acceptable size for the listed FSE classifications (Class 1 through 5) shall be met.

FOG Related Links for Architects & Contractors


GGI Purchasing Information (PDF)

Approved GGI Manufacturers (PDF)

GGI Design and Installation Specifications (PDF) 

Hydro-Mechanical Grease Interceptor (Small Grease Traps) Purchasing Instructions (PDF) 

Hydro-Mechanical Grease Interceptor (Small Grease Traps) Installation Instructions (PDF)

FSE Classifications 1 Through 5 (PDF)