pln20170021-The Shops at Aurora-Design-E1.pdfY MEMORANDUM
Date: May 10, 2017
To: Kernen Lien, Senior Planner
From: Jeanie McConnell, Engineering Program Manager
Robert Edwards, Stormwater Engineer
Subject: PLN20170021 — Design Review—10,000sf Retail Bldg
The Shops (a. Aurora Village — 8431 244t" St SW
The comments provided below are based upon review of the application and documents
submitted for the design review application for the subject development. Additional
information is requested from the applicant at this time. Please ask the applicant to respond to
the following.
1) The plans indicate a 6-foot walkway connection between the parking lot and the sidewalk
along Highway 99. Please confirm with the City of Shoreline (and provide a response in
writing to the City) that a walkway in this location is acceptable. The grass area along the
property frontage may provide a stormwater benefit that cannot be disturbed/regraded
without appropriate design.
2) The subject development falls within the Olympic View Water & Sewer District for water
and sewer utilities. Please provide written confirmation that the District finds the
proposed development to be feasible with regards to water & sewer availability.
STORMWATER REPORT
1. A preliminary stormwater report has been submitted to the City to confirm project
feasibility. Please respond to the following:
Background
This is classified as a Large Project because it involves 1 or more acres of land disturbing
activity.
Large Project are subject to Small Site Minimum Requirements 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
and 11.
City of Edmonds
Minimum Requirement #1— Preparation of Stormwater Site Plan
Comments 1 and 2 shall be addressed as part of the project feasibility review:
1. Stormwater Report, WWHM page 2: Use Puget East rain gage, not Everett rain
gage. This is selected in the project information screen by selecting "Use WSDOT
data"
2. Sheet PC-2: Grading to the west of the proposed building will lower the existing
grade by about 1-foot. It should be noted that there is high groundwater in this
area.
Comments 3-10 are provided to assist in a more complete civil plan submittal at time of
building permit:
3. Sheet PC-2, CB #1: Cover for the 12" pipe is less than 12-inches. This will require
ductile iron pipe.
4. Sheet PC-2, CB #2: Cover for the 12" pipe is less than 24-inches. This will require
ductile iron pipe.
5. Sheet PC-2, CB 44: Cover for the 10" pipe is less than 10-inches. This will require
ductile iron pipe.
6. Sheet PC-2, The 148 LF 12" storm line has less than 24-inches cover.
7. Sheet PC-2, Control Structure: Specify IE for 10" and specify slope for 10" pipe.
8. Sheet PC-2: 10" outlet pipe from Control Structure is shown as 5=0.5%, yet
calculates as 1.0%
9. Sheet PC-2: "Install New CB" at south end of site will require a Type 2 CB due to
depth.
10. Sheet PC-2: The connection to the City's MS4 is shown as a Tee. Connections to
the City's MS4 are allowed at structures only.
Minimum Requirement #2 — Construction Stormwater Pollution Plan
Comments: None
Minimum Requirement #3 — Source Control of Pollution
Comments: None
Minimum Requirement #4 — Preservation of Natural Drainage Systems
Comments: None
Minimum Requirement #5 — Onsite Stormwater Management
Comments: None
Minimum Requirement # 6
— Runoff Treatment
Comments: None
Minimum Requirement #7 —
Flow Control
Comments: None
Minimum Requirement #8 —
Wetland Protection
Comments: None
Minimum Requirement #9 —
Operation and Maintenance
Comments: None
Minimum Requirement # 10 — Offsite Analysis and Mitigation
Comments: None
Minimum Requirement #11— Financial Liability
Comments: None
City of Edmonds