bld20151001-Bergstrom-Add-E3 with attachments.pdf
CITY OF EDMONDS
PLAN REVIEW COMMENTS
ENGINEERING DIVISION
(425) 771-0220
City Website: www.edmondswa.gov
DATE:December 9, 2015
TO:Brian Bergstrom
brian@distinctiveglass.com
FROM:Jeanie McConnell, Engineering Program Manager
jeanie.mcconnell@edmondswa.gov
RE:Application #: bld20151001
Project: Bergstrom Addition -replace wood deck, enclose carport to garage
Project Address: 18401 High Street
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 redline plans or submit three (3) sets of revised
plans/documents with a written response to each of the items below to a permit coordinator.
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-4:30pm. The Permit Center is closed on
Wednesdays.
City of Edmonds handouts, standard details and development code can be referenced on the City
website.
Comments 1 –September 22, 2015
Comments 2 –November 17, 2015
The comments below were provided by the City on September 22, 2015, following review of
the initial building permit application and documents. New/revised documentation was received by
the City October 29, 2015, but the following comments were not addressed. Please revise and
resubmit plans accordingly.
Comments 3 –December 9, 2015
December 9, 2015 –Impervious surfaceareacalculations were provided in thechart as
1)
requested, however, it appears as though the information is not accurate. Additional City
records were located, along with a check against theSnohomish County Assessors website,
that indicatesthe subject home was built in 1980. Therefore, all impervious surface area
constructed on thesubject site is regulated. The approved single family residential
buildingpermit references a stormwater management system that was approved at the
time of subdivision. I was not able to find other records further confirming the placement
of this system on thesite in relation to the existing home, but have include the plans
mentioned.Perhaps you have additional information regarding this?
At thispoint, the City considers the home and associated impervious surface areas as
approved underthe originalbuilding permit to be mitigated/managed. Any additional
impervious surface areas constructed on the site also need to be managed. Please update
the impervious surface area chart accordingly and revise plans to include a stormwater
management system for theproposed impervious surface areas. Please refer to City
stormwater handouts E72and E72Bfor additional information.Youmay also refer to
Edmonds Community Development Code 18.30for stormwater requirements.
Comments 9/22/2015 and 11/17/2015:Please provide impervious surface calculations on the
plans in the table format provided below. Also note on the plans the year of construction for all
existing and proposed (under this permit) impervious surface areas. City records indicate an
addition was done in 2002 and possibly a deck or patio in 1996. Stormwater management is
required for impervious surface areas constructed on the site after 1997 that meet or exceed
2000sf.
Please note, the square footages provided shall include the entire outline of the roof, walkways,
patios, etc. Decks are not included in impervious surface calculations unless they are
waterproof/have an impermeable membrane.
With regards to the deck, please provide clarification on what the existing conditions were and
what the final conditions will be. Was there previously a wood slotted deck over the top of an
aggregate patio? If this is accurate, the deck would have beenconsideredpervious and the patio
would have beenconsideredimpervious, however dueto the removal down to bare soil and
replacement with a new concrete slab, the area would beconsidered new impervious surface
area. The impervious surface calculations should clearly reflect the existing and proposed
conditions.
IMPERVIOUS SURFACE CHART
LineTypeArea (square feet)
1.Non-Regulated
ExemptRegulated
2.Replaced
3.New (Post 1977)+
Total Regulated Impervious Area
4.=
Mitigation required if in excess of 2000sf
5.Total Area Mitigated by Existing Stormwater Management System(s)-
=
6.Regulated Area Not Yet Mitigated
7.Area Proposed to be Mitigated by Low Impact Development Techniques=
8.Area Proposed to be Mitigated through Conventional SWM Techniques=
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2)Show location of existingandproposedutilities on the site plan, including water, sewer and
storm. The following is a copy of the sewer asbuilt found in City files:
Temporary erosion control measures are to be provided during construction. Indicate on the site
3)
plan what measures will be provided during construction or if at this point construction is far
enough along that the site has been fully restored, then pleaseindicate as suchon the plans.
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