BLD2024-0178+Grease_Trap_or_Interceptor_Worksheet+2.15.2024_3.48.42_PM+4063564RECEIVED
Feb 16 2024
DEVELOPMENT SERVICES
F.S.
F. D.
Mop
3 COMF
B54
HYDROMECHANICAL GREASE INTERCEPTOR SIZING WORKSHEET BLD2024-0178
Facility Name: Gyro Makers
Address: 10016 EDMONDS WAY
Suite #: A
• Dishwashers are not allowed to be connected to a HGI.
• Food disposers are not allowed in a facility served by a HGI and must be disabled or removed.
Solids must be screened out and placed in the solid waste container.
Fixture Capacity in Cubic
Inches
(L x W x D x no. of sinks)
Fixture Capacity in
Gallons
(Cu. In. _ 231)
Drainage Load
(75% of Total
Capacity)
Flow Rate for a
2-Minute Drain
Period
#1
1 --Lx 8"x2"x 2 =256 c.i.
- 231= 1.1 gal
x .75 =
•8 75gal
_ 2 =
gpm
#2
4"x 4" x 2" x = 32 c.i.
_ 231= .13 gal
x .75 =
1 gal
- 2 =
gpm
#3
16"x__lff 10x= 2560 c.i.
- 231= 11 gal
x .75 =
8.75gal
_ 2 =
gpm
#4
20x 12x 27 x 3 =19440 c.i.
- 231= 84 gal
x .75 =
63 gal
_ 2 =
gpm
#1
#2
HGI #1- Total drainage flows from maximum of
x x x = c.i. _ 231= gal
x x x - c.i. _ 231= gal
4 fixtures
42
gpm
x .75 = gal
x .75 = gal
_ 2 =
gpm
_ 2 =
gpm
#3
#4
x x x - c.i. _ 231= gal x .75 =
x x x = c.i. I - 231= gal I x .75 =
HGI #2 - Total drainage flows from maximum of 4 fixtures
gal
gal
_ 2 =
_ 2 =
gpm
gpm
gpm
#1 Hydromechanical Grease Interceptor Size (in gpm) 35 50 75 100 or greater
#2 Hydromechanical Grease Interceptor Size (in gpm) 35 50 75 100 or greater
If the calculated size is less than 35 gpm please circle the 35 gpm box.
The Minimum Hydromechanical Grease Interceptor size is 35 gpm as per City of Edmonds
Pretreatment Ordinance.
City may upsize for factors such as low temp/high volume dishwashing, if permitted, or high
oil/grease content on menu, etc.
-------------------------------------------(For City use only below this line) -------------------------------------
Remarks:
Size Approved:
gpm
Approved by: Date:
Pretreat ent T nician
Revised 3.27.2023