CANOD.pdfCity of Edmonds
Critical Area Notice of Decision
Applicant:
Property Owner:
Critical Area File
7)
Permit Nurnber:
S'CI 6
Site Location:
S—( 16
arcel Number:
0 O'S- 19 L/ C/
Project Description:Ni
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Conditional Waiver. No critical area report is required for the project described above.
1. There will be no alteration of a,Critical Area or its required buffer.
2. The proposal is an allowed activity pursuant to ECDC 23.40,220, 23.50.220, and/or
2310,640.
3. The proposal is exempt pursuant to ECDC 23.40.230.
Erosion Hazard. Project is within erosion hazard area. Applicant must prepare an erosion and
sediment control plan in compliance with ECDC 18.30.
Critical Area Report Required. The proposed project is within a critical area and/or a critical area
buffer and a critical area report is required. A critical area report has been submitted and evaluated
for compliance with the following criteria pursuant to ECDC 23.40.160:
I The proposal minimizes the impact on critical areas in accordance with ECDC 23.40; 120,
Mitigation sequencing;
2. The proposal does not pose an unreasonable threat to the public health, safety, or welfare
on or off the development proposal site;
3. The proposal is consistent with the general purposes of this title and the public interest;
4. Any alterations permitted to the critical area are mitigated in accordance with ECDC
23.40.110, Mitigation requirements.
5 The proposal protects the critical area functions and values consistent with the best
available science and results in no net loss of critical functions and values; and
6. Z The proposal is consistent with other applicable regulations and standards.
F -I Unfavorable Critical Area Decision. The proposed project is not exempt or does not adequately
mitigate its impacts on critical areas and/or does not comply with the criteria in ECDC 23,40.160 and
the provisions of the City of Edmonds critical area regulations. See attached findings of
noncompliance,
Favorable Critical Area Decision. The proposed project as described above and as shown on the
attached site plan meets or is exempt from the criteria in ECDC 23.40.160, Review Criteria, and
complies with the applicable provisions of the City of Edmonds critical area regulations. Any
subsequent changes to the proposal shall void this decision pending re -review of the proposal.
Conditions. Critical Area specific condition(s) have been applied to the permit number referenced
above. See referenced permit number for specific condition(s),
po-
Reviewei Signature Date
Appeals: Any decision to approve, condition, or deny a development proposal or other activity based on the
requirements of critical area regulations may be appealed according to, and as part of, the appeal procedure, if any,
for the permit or approval involved.
Revised 12/16/2010
a s s o c i a t e d
earth sciences
incorporated
911 Fifth Avenue
Kirkland, Washington 98033
Phone: 425-827-7701
Fax: 425- 827-5424
www.aesgeo.com
TO:
Seacoast Construction
21010 Summit Lane
Edmonds, Washington 98026
FYtO;
AS REQUESTED BY: Mr. Jack Jorgenson
THE FOLLOWING WAS NOTED:
AN
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FIELD REPORT
Page 1 of 3
Date
Project Name
Project No.
4/14/14
Talbot Road Residence Dec lc
KE140192A
Location
Municipality
Weather
17512 Talbot Road
Edmonds
Sun, SOs
Permit No.
DPD No.
Report No.
N/A
N/A
1
Engineer/Architect
Jesse Jarrell/Western Engineers
Client/Owner
Seacoast Construction
General Contractor/Superintendent
Seacoast Construrction/Mr. Jack Jor enson
Grading Contractor/Superintendent
N/A
The subject site consists of a residential parcel with an existing single-family home. A steep slope is located at the
northwest end of the parcel. The toe of this slope extends down to the BNSF railroad tracks adjacent to the Puget Sound
shoreline. It is our understanding that current plans include the construction of a deck off of the rear (NW side) of the
home. It is also our understanding that the distal end of the deck will be supported on two posts located approximately 15
feet northwest of the home (i.e. approximately 58 feet from the top of the steep slope). The purpose of our visit was to
evaluate the suitability of the proposed deck setback from the top of the steep slope.
Site Reconnaissance
The topography of the area surrounding the home and proposed deck slopes gently down toward the northwest. The
existing homers setback approximately 73 feet from the top of the steep slope at the NW end of the property. The
inclination of the upper 2 to 4 feet of the steep slope was visually estimated to be approximately 50 percent. Below this
point, the slope steepens to approximately 0.75H:1V (HorizizontalNertical). The inclination of the slope flattens to
approximately 2H: IV over its lower five feet. Review of the site on Google Earth indicates that the total height of the
steep slope is approximately 45 feet with an average inclination of approximately 1.2H: IV. This is generally consistent
with our visual estimation of the slope height and inclination. The face of the slope is vegetated by low brush. A cross
section of the slope based on our field measurements and estimated slope height and inclination is shown on Page 3.
Subsurface Conditions
Hand boring HB -1 was excavated approximately 15 feet from the NW side of the home approximately midway between
the locations of the footings for the two proposed deck support posts. The boring was excavated by a laborer supplied by
Seacoast Construction prior to our arrival. A hand auger was used to collect soil samples from the base and sidewalls of
the boring at the time of our site visit. The following is a summary of the soil conditions encountered in boring HB -1.
Copies To:
Date Mailed: 2014
AESI FIELD REPORT
To: Seacoast Construction
Date: 4/14/14
Permit No. N/A
:' • '1 C � ' 1' :'I i
Depth
Surface
0 — 2.5 Ft.
2.5 — 5.0 Ft.
Description
Sod
Project Name
Project No.:
DPD No.
Talbot Road Residence Deck
KE140192A
N/A
Page 2 of 3
Fill
Loose to medium dense, very moist, brown, silty sand with gravel (SM). Contains
scattered angular cobbles.
Vashon Lodgement Till
Medium dense to dense, very moist, tan, silty SAND with gravel (SM); lightly mottled.
Bottom of boring at approximately 5 feet
Ground water seepage not encountered
Review of the regional geologic map titled Composite Geologic Map of the Sno-King Area, Central Puget
Lowland, Washington prepared by Booth, Cox, Troost and Shimel for the Seattle -Area Geologic Mapping
Program, University of Washington (2004) indicates that the area of the subject site is underlain by Vashon
Lodgement Till. Our interpretation of the sediments encountered in exploration HB -1 is in general agreement
with the regional geologic map.
Conclusions
Based on the subsurface and topographic conditions present at the site, it is our opinion that the proposed
setback of approximately 58 feet from the top of the steep slope is suitable for mitigation of landslide hazard
risks associated with the proposed deck. Our work has been conducted for the exclusive use of Seacoast
Construction, and their agents, in accordance with in accordance with generally accepted geotechnical
engineering practice. No other warranty, express or implied, is made.
Copies To: Field Rep: Tim Peter, L.E.G., L.Hg.
Date Mailed: Principal/PM:
AES1 FIELD REPORT
To: Seacoast Construction
Date: 4/14/14
Permit No. N/A
Project Name: Talbot Road Residence Deck
Project No.: KE140192A
DPD No. N/A
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Copies To: Field Rep: Tim Peter, L.E.G.,
Date Mailed: Principal/PM:
Page 3 of 3
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