BLD20160902-Crabtree-E1.pdf
CITY OF EDMONDS
PLAN REVIEW COMMENTS
ENGINEERING DIVISION
(425) 771-0220
City Website: www.edmondswa.gov
DATE:April 19, 2017
TO:Al Cohen
Alcohendesign@gmail.com
FROM:Mitch Boyd,StantecConsulting Services
Mitch.boyd@edmondswa.gov
RE:Application #: BLD20160902
Project: Crabtree-Single Family Residence
Project Address: 19205 Olympic View Drive
During review of the above noted application, it was found that the following information,
corrections, or clarifications are needed. Reviews by other divisions, such as Planning, Building, or
Fire may result in additional comments. Please submit two (2)sets of revised plans/documents
including a written response to each item below.
nd
Resubmittals can be made at the Development Services Department on the 2floor of City Hall.
Permit Center hours are M, T, Th & F from 8am-4:30pmand on Wednesdays from 8:30am-noon.
City of Edmonds handouts, standard details, application and other forms, and development code
may be referenced on the City website: www.edmondswa.govunder Services/Permits and
Development.
GENERAL
1)SubmitROW Permit Applicationform
2)Include a City Engineering Division approval block on all plan sheets. Refer to sample on
City website.
3)Please show the driveway approach.Label the driveway as asphalt from the paved road to
the property line. Once on private property the driveway may be any material the applicant
chooses or as required to meet stormwater code requirements.City code requires the
driveway to be paved from the edge of existing pavement a minimum distance of 20-feet or
to the property line, whichever is greater.Please provide pavement 20’ from the edge of
existing pavement.
4)Utility patches shall be combined and full width or half width overlay will be required
depending ontheextent of disturbance. Where utility patches fall entirely within one travel
lane, the overlay shall extend to the centerline of roadway. Where utility patches extend into
both travel lanes then a full width overlay is required.Includethe utility patch/HMA overlay
standard detail E2.3in the plans.
5)The plans have a conflict atthe retaining wallon the east side of the turnaround area. Per the
retaining walldetail, there is a minimum of 6” between the top of wall and the fill soil. Per
the plans, the top of wall matches the fill height. Please revise.
6)A small section of grading exceeds a2:1 slope near the northeastern corner of the house.
Please revise grading to be a maximum of 2:1;otherwise explain how erosion will be
controlled.
Please notethatadditional comments not included in this reviewmay be produced after
7)
reviewing the next submittal.
TESC
1)Please add a note to the plans that all disturbed soils will be compost amendedper BMP
T5.13.
WATER
1)Aminimum of 10’ of horizontal separation is required between water and sewer linesunless
there is 18” of vertical separation.Please provide IE of the side sewer service and the water
service near the proposed structure to ensure vertical separation. Otherwise, provide a 10’
horizontal separation.
2)Add a callout showing the size of the new water meter.
3)Add a note to the plans indicating where the landscape irrigation backflow assembly will be
located (if one is proposed).
4)Please add a note to the plans that all final restoration shall be completed by the contractor
not the City of Edmonds.
SEWER
1)Please add a note that the 6” cleanout at the property line shallhave a 12” cast iron lamphole
cover with ½” hexbolts.
2)Show a cleanout located 2’ fromthe house. Please add a callout for the6” sewer cleanout at
the property line and upstream of the 45° bends.
3)Provide invert elevations at the cleanout nearthe property line and near the proposed
structureso that a minimum 2% slopeand minimum 2’ pipe coveragecan be verified. If the
slope of the pipe exceeds 20% thepipe will need to be anchored.
4)If a new sewer lateral is proposed and the connection will be core drilled, show the
connection at the sewer main per City standards and with a Romac Inserta-tee. If the sewer
connection will be cut in, please show a wye to be installed.
DRY UTILITIES
1)Show all dry utilities and required utility separation. Please add a note that a minimum of 3’
separation is required between the dry utilities (power, gas, phone, cable, etc.) and sewer,
water, and storm and 5’ from any City main lines.
STORM
1)Provide footing drains at the base of all retaining walls. Show the footing drain at the
retaining wall near the northwest corner of the structure (east side of concrete turnaround).
Please indicate the footing drain discharge location
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2)Provide the invert elevation for the footing drainnear the proposed structure atthetightline
connection between the structure and the public storm system.
3)The footing drainmust connect into the detention tank outfall pipe on private property, not
in the right of way or at the existing catch basin. At the footing drain and storm outfall
connection, please provide theinvert elevation.
STORMWATER REPORT
The following comments are provided from Robert C. Edwards, PE, Stormwater Engineer. Please
contact Robert directly at 425-771-0220 or by email at robert.edwards@edmondswa.govwith any
specific questions you may have regarding these comments.
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Stormwater Review
Date of Review: March 14, 2017
File/Address:BLD20160902 / 19205 OVD
Reviewer: Robert C. Edwards, PE, Stormwater Engineer, City of Edmonds
Background
This is classified as a Category 1 Small Site Project because it creates/adds impervious area more than 2,000
SF and less than 5,000 SF.
Category 1 Small Site Projects are subject to Small Site Minimum Requirements 1, 2, 3, 4, 5, 7, 8, 9, and 11.
Minimum Requirement #1 –Preparation of Stormwater Site Plan
Comments:
1.Grade driveway to collect as much stormwater as possible to the detention tank.
2.Plans and report state the project will cover 3,717 SF. A review of the architectural plans depict 30-
inch eaves. Using a planimeterand measuring the plan with an offset for the eaves predicts nearly
4,500 SF of hard surface. Update the plans and report with the correct impervious areas and
detention tank size.
Minimum Requirement #2 –Construction Stormwater Pollution Plan
Comments: None
Minimum Requirement #3 –Source Control of Pollution
Comments: N/A per SFR
Minimum Requirement #4 –Preservation of Natural Drainage Systems
Comments: None
Minimum Requirement #5 –Onsite Stormwater Management
Comments: N/A
Minimum Requirement #7 –Flow Control
Comments: See MR #1 comments
Minimum Requirement #8 –Wetland Protection
Comments: N/A
Minimum Requirement #9 –Operation and Maintenance
Comments:None
Minimum Requirement #11 –Financial Liability
Comments: N/A for SFR
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