ENG3.pdfGrease Interceptor Sizing Worksheet
Facility Name: ,0 q
Address: S `r`` fie, Suite No.:
• A Grease Interceptor permit is required ($365.00 fee). Contact the Pretreatment Technician
(425-672-5755) if you have any questions and also to get signature approval on this form.
• Per Edmonds City Code the minimum sized Grease Interceptor permitted is 500 gallons.
Maximum sized unit is 4,000 gallons.
NUMBER OF MEALS SERVED AT PEAK HOUR
Based on the total number of seats and average time per meal.
Lounge and bar seating is counted at 20%.
WASTE FLOW RATE (Choose one)
• With Dishwashing Machine ...................... 6 gallon flow
• Without Dishwashing Machine ................. 5 gallon flow
• Single Service Kitchen* .............................. 2 gallon flow
• (Food Waste Disposer ........................ add 1 gallon flow)
RETENTION TIMES (Choose one)
• Commercial Kitchen Dishwasher ............. 2.5 hours
• Single Service Kitchen* .............................. 1.5 hours
STORAGE FACTORS (Choose one)
• Full Service Kitchen 0-12 hour operation:........... 1
• Full Service Kitchen 12-20 hour operation:......... 2
• Full Service Kitchen 24 hour operation: .............. 3
• Single Service Kitchen*: ........................................ 1.5
• (Alternate factor for occasional use kitchen ......... . _)
A= 112-
B = �o
C= 2.5
rim
Minimurn Interceptor Size lig uid ca acit A x B x C x D = 1230
*A single service kitchen refers to a restaurant where disposable dishware is used and
dishwashing operations are therefore greatly reduced.
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Size Approved: gal. Approved by: Date:
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[Rev. Feb. 2004]