Review_Comments_ENG2.pdf
City of EdmondsBLD20110003
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORKS DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
PermitApplication:Date:
#BLD201100032/25/11
th
Project Name/Address:
Zahnow –8216-211Pl SW
Contact Person/Address, Fax or E-mail:
James & Linda Zahnow –jameszahnow@comcast.net
Reviewer: JENNIFER LAMBERTDivision:
ENGINEERING
During review of the subject submittal, it was found that the following information, corrections, or
clarifications would need to be addressed. All Handouts referred to in these comments can be accessed at
our website: www.ci.edmonds.wa.usunder City Government / Development Services Department /
Engineering Division then scroll down to Handouts:
st
1Review –1/18/11
nd
2Reivew –2/25/11
1)OK
2)OK
3)OK
4)2/25/11 -Comment was partially addressed. The gravel area that can be driven on needs to be
included in the impervious surface calculations. Please revise accordingly.
1/18/11 Comment: It appears that the gravel areas shown on the site plan were added after the
construction of the single family residence. Whengravel is compacted it is considered impervious
and will need to be included in the impervious surface calculations.
a.If the gravel installed is washed gravel,it means that there are no fines within the gravel.
Compaction,will not occur when minor weight is applied (i.e. foot traffic) to washed gravel
and therefore is considered perviouswhen not driven on.
b.Please revise the site plan to note what type of gravel was installed and indicate which areas
are possible to be driven on.
c.Please revise the impervious surface calculations accordingly.
DATE E-MAILED2/25/2011PAGE()
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City of EdmondsBLD20110003
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORKS DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
5)2/25/11 –Comment not addressed.
1/18/11 Comment: From the letter provided, a variance from the stormwater requirements was
requested. Unfortunately a variance can not be granted. The letter indicates astormwater system
was installed on the property at the time thesingle family was constructed. This existing system
would need to either be modified to handle the additional impervious surface water runoff or a new
system would need to be installed.
a.If it is proposed to modify the existing system, please provide engineering calculations
showing either that the existing system can handle the additional surface water runoff or
showing what is needed to modify the existing system to handle the additional water.
b.If a new system is proposed that is designed for stormwater runoff to infiltrate(i.e.
raingarden, spreader trench, drywell)into the ground a geotechnical report with percolation
rates, maybe required. Please provide the necessary information to the City to adequately
review the proposed system.
6)OK
7)2/25/11 –Comment was partiallyaddressed. You state there is an integrated curb/gutter
system. Can you please clarify what that means. Also, the footing drain connection is shown,
but not the downspouts. Please show where the downspouts are connected.
1/18/11 Comment: Please show the location of the existing storm system and its point ofconnection
to the city storm system.
8)OK
9)OK
10)OK
Please resubmit 3 copies of the revised sitedrawings and associated documents with a written response to
each item to an Engineering Technician. Please contact me at 425-771-0220ext 1321or by e-mail at
jennifer.lambert@ci.edmonds.wa.usif you have specific questions regarding these plan corrections.
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