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Restaurants
Commercial Kitchens
A. Grease interceptor size determined as follows:
For restaurants: S x G x (H/12) X LF
Where |
S = number of seats in dining area |
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G = gallons per seat (use 25) paper goods |
– 10 gal/seat |
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H = hours of operation per day 12 |
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LF = loading factor: |
2.0 |
- recreation areas |
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1.50 |
- main highways |
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1.25 |
- other roads |
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1.0 |
- interstate |
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.75 |
- freeway |
B. Other establishments with commercial kitchens; schools, nursing homes, churches, day care, convenient stores, and other: M x G x LF
Where M = number of meals prepared per day
G = gallons per meal (use 5)
LF = loading factor: 1.0 with dishwashing
0.5 without dishwashing
1. |
Minimum grease interceptor volume: 1,000 gallons, plus 15% freeboard with 1,250 gallon maximum, each tank. If additional tanks are required to meet standards, they shall be hooked in series. |
2. |
Minimum one baffle per grease interceptor, approximately centered, extended 2” to 4” above the water line and to within 8” to 10” of the bottom of the tank. |
3. |
Grease interceptor inlet and discharge pipes must be vented. Inlet pipe may be vented through the building’s system. |
4. |
Grease interceptor discharge device to extend below water level approximately one-half the water depth. |
5. |
Grease interceptor and control manhole structure shall be of Precast concrete and shown in detail on the construction plans. |
6. |
Control manhole must be located ahead of connection to City’s line. |
7. |
Distance between grease interceptor and control manhole varies, no minimum distance. |
8. |
8” free fall, for sample collection, between grease interceptor discharge to control manhole and control manhole discharge. |
9. |
Control manhole discharge pipe at bottom of invert. Invert sloped to 4” on sides. |
10. |
Standard grade (0.4%) from control manhole discharge to City’s line. |
11. |
Grease interceptor and control manhole inspection cover and rings shall be standard cast-iron USF 170 or equal. Two required on grease interceptor and one on control manhole. Set to road grade. |
12. |
Effluent from grease interceptor must comply with Section 17.8 of the Rockledge City Code that specifies the parameters for discharging grease and related substances to the City’s sewer system. |
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