Pre-Treatment Comments.pdfCity of Edmonds Wastewater Pretreatment Program
200 2"d Ave S., Edmonds, WA 98020
Office: (425) 672-5755 Mobile: (206) 595-3117
Plan Review Comments
Plan Check #: BLD20171246
Date: March 28, 2018
Project Name/ Address: The Shops at Aurora / 8431 244th St SW, Edmonds WA
Contact Person/Fax or Email: Kori Keller / kkellerkbcradesign com
Reviewer: Les Krestel Division: Wastewater Treatment Plant / Pretreatment
The subject application has been reviewed but cannot be completed until the following
items have been addressed and/or completed.
1. Looking at the plans I do not see a proposed outdoor gravity grease interceptor (GGI) for
this facility.
2. For newly constructed, expanded, or renovated retail facilities that may occupy a food
service establishment (FSE), city ordinances require the installation of a GGI.
3. At this phase of construction it may be difficult to size a GGI when there are no FSE's in
mind. The minimum size GGI for any one FSE is 500 gallons. Keeping this in mind, if
there are 3 spaces in the facility, the minimum size GGI to be installed would be 1,500
gallons.
4. For Pretreatment to sign off, a detailed cut sheet showing the proposed GGI for this
location will be required and the GGI will also need to be added to the plans.
5. The GGI should have:
• 6" PVC lines
• Proper venting allowing free air exchange between both chambers
• Brackets supporting all downlegs in GGI. It is very important to secure
the downlegs to the vault walls; it may prevent costly repairs in the
future. It is recommended to use stainless steel unistrut bar and 6"
clamps to secure pipe
• Specific for traffic
• Graded away from the manholes to prevent runoff from entering the
GGI
• Man hole covers above each downleg for inspection and maintenance
6. The following fixtures must be connected to the GGI:
• Mop sink
• 3 comp sink
• Dishwasher and prewash
• Prep sink, if used for meat
• Floor drains in the scullery/food prep area
• Wok drain
7. The following fixtures must not be connected to the GGI:
• Hand sink
• Vegetable prep sink
8. Please have the GGI installer notify me after the GGI has been set and plumbed.
Additionally, the GGI needs to be filled with fresh water for the GGI inspection.
Please call me Monday -Friday for questions and assistance.
Les Krestel
City of Edmonds Pretreatment Technician
425-672-5755
206-595-3117 cell
les.krestel@edmondswa. gov