CRA20170079 Erosion-Landslide.pdf`oc. 189%J
CITY OF EDMONDS
1215 1h Avenue North, Edmonds WA 98020
Phone: 425.771.0220 * Fax: 425.771.0221 * Web: www.edmondswa.gov
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DEVELOPMENT SERVICES DEPARTMENT * PLANNING DIVISION
Critical Area Determination (CRA20170079)
Based on a review and inspection of the subject site, staff has determined that one or more
critical areas are located on or near the site. Critical areas are ecologically sensitive or
hazardous areas that are protected in order to maintain their functions and values.
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Site Location 9810 — 23511 Pl. SW
Tax Account Number 00554800100110
Property Owner Carmen Crispeno
Applicant Same as owner
Critical Area(s) Present ❑ Wetlands (ECDC 23.50)
❑ Frequently Flooded Areas (ECDC 23.70)
® Geologically Hazardous Areas (ECDC 23.80)
® Erosion Hazard Areas
® Landslide Hazard Areas
❑ Seismic Hazard Areas
❑ Fish & Wildlife Habitat Conservation Areas (ECDC 23.90)
❑ Streams
Site Description
The subject site contains and/or is adjacent to slopes that qualify as both Erosion Hazard and
Landslide Hazard Areas as defined in ECDC Chapter 23.80. The eastern portion of the site
contains a steep slope sloping downwards onto the subject property from the adjacent
property to the east at an approximate 50% slope according to City LiDAR data. The slope
lessens on the western side of the site, but continues sloping downwards gradually to the west.
Soils on the site are identified as Alderwood urban land complex (8% - 15% slope). As a result,
the portions of the site with slopes in excess of 15% slope are considered to be potential
erosion hazards and the eastern slope in excess of 40% is considered to be a potential landslide
hazard.
What does this mean?
The critical area regulations are only triggered when an alteration is proposed to a critical
area or its buffer. However, once an alteration in or near a critical area is proposed,
critical area studies and City review and approval may be required.
What is an 'Alteration'?
According to Section 23.40.005 of the Edmonds Community Development Code (ECDC):
"Alteration" means any human -induced action which
changes the existing conditions of a critical area or its
buffer. Alterations include, but are not limited to:
grading, filling; dredging; draining; channelizing;
cutting, pruning, limbing or topping, clearing,
relocating or removing vegetation; applying herbicides
or pesticides or any hazardous or toxic substance;
discharging pollutants; paving, construction,
application of gravel; modifying for surface water
management purposes; or any other human activity
that changes the existing landforms, vegetation,
hydrology, wildlife or wildlife habitat value of critical
areas.
Jen Machuga, Associate Planner
Name, Title
Signatu
June 27, 2017
Date
Cited sections of the Edmonds Community Development Code (ECDC) can be found at
http/www. codepublishin. cam/A/Edmonds
Environmentally Critical Areas General Provisions (ECDC 23.40)
Wetlands (ECDC 23.50)
Frequently Flooded Areas (ECDC 23.70)
Geologically Hazardous Areas (ECDC 23.80)
Fish and Wildlife Habitat Conservation Areas (ECDC 23.90)
City of Edmonds GIS map tool with approximate location of critical areas:
http.-Iltnaps.edmondswa.gov
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