1. North Carolina Department of Environment and Natural Resources (NCDENR). Considerations for the management of discharge of fats, oil and grease to sanitary sewer systems. DPPEA-FY01-22; 2002. .
2. International plumbing codes handbook;Woodson,2006
3. The Plumbing and Drainage Institute (PDI). Guide to grease interceptors: eliminating the mystery; 1998. .
4. G. Wiltsee, Urban waste grease resource assessment. National Renewable Energy Laboratory, Colorado: NREL/SR-570-26141; 1998.
5. North Carolina Department of Environment and Natural Resources (NCDENR). The fact sheet for restaurant oil and grease rendering; 1999. .