BLD20100835_SieckeDeck.pdf
CITY OF EDMONDS
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121 5 Avenue North, Edmonds WA 98020
Phone: 425.771.0220 • Fax: 425.771.0221 • Web: www.ci.edmonds.wa.us
DEVELOPMENT SERVICES DEPARTMENT • PLANNING DIVISION
November 22, 2010
Bruce O’Neill
Design Works Construction
15000 Village Green Drive #26
Mill Creek WA 98012
mick@designworksconstruction.net
Subject: Planning Division comments for file BLD20100835 (Siecke Deck)
Greetings,
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deck addition16740 76
Thank you for submitting a building permit application for a at
Avenue WestRS-12
in the zone. I have reviewed the above building permit application for the
Planning Division and it was found that the following information, corrections, or clarifications
will need to be addressed before the Planning Division review can continue.
1.Geotechnical Report:
It was determined that this site is on or adjacent to a very steep slope
with a stream at the bottom, off site. The deck will encroach further towards, rather than
away from the critical areas. In order to determine that the functions and values of the
stream and steep slope will not be compromised, please provide a geotechnical report that
addresses the following requirements of ECDC 23.80.070.A (Erosion & Landslide Hazard
Areas) and certifies that the new deck and stairs proposed will meet these requirements:
2. Alterations. Alterations of an erosion or landslide hazard area and/or buffer may only occur for activities
for which a hazards analysis is submitted and certifies that:
a. The development will not increase surface water discharge or sedimentation to adjacent properties
beyond predevelopment conditions;
b. The development will not decrease slope stability on adjacent properties; and
c. Such alterations will not adversely impact other critical areas;
3. Design Standards. Development within an erosion or landslide hazard area and/or buffer shall be
designed to meet the following basic requirements unless it can be demonstrated that an alternative
design that deviates from one or more of these standards provides greater long-term slope stability while
meeting all other provisions of this title. The requirement for long-term slope stability shall exclude
designs that require regular and periodic maintenance to maintain their level of function. The basic
development design standards are:
a. The proposed development shall not decrease the factor of safety for landslide occurrences below the
limits of 1.5 for static conditions and 1.2 for dynamic conditions. If stability at the proposed development
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site is below these limits, the proposed development shall provide practicable approaches to reduce risk
to human safety and improve the factor of safety for landsliding. In no case shall the existing factor of
safety be reduced for the subject property or adjacent properties;
b. Structures and improvements shall be clustered to avoid geologically hazardous areas and other
critical areas;
c. Structures and improvements shall minimize alterations to the natural contour of the slope, and
foundations shall be tiered where possible to conform to existing topography;
d. Structures and improvements shall be located to preserve the most critical portion of the site and its
natural landforms and vegetation;
e. The proposed development shall not result in greater risk or a need for increased buffers on
neighboring properties;
f. The use of retaining walls that allow the maintenance of existing natural slope area is preferred over
graded artificial slopes; and
g. Development shall be designed to minimize impervious lot coverage;
Please submit a written response to the above, along with any revised plans to your Permit
Coordinator:Linda Thornquist
. All code citations can be found at: www.ci.edmonds.wa.us.
If you have any questions, please do not hesitate to contact me. I look forward to working with
you on this project.
Sincerely,
ŭźƓğĭƚĭĭźğʹʹğƭƭƚĭźğƷĻƦƌğƓƓĻƩ
City of Edmonds Development Services Department
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Avenue North, Edmonds WA 98020
121 5
425.771.0220 x 1778 | coccia@ci.edmonds.wa.us
cc: BLD20100835
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