CRA2023-0069 determinationCITY OF EDMONDS
121 51h Avenue North, Edmonds WA 98020
Phone: 425.771.0220 • Fax: 425.771.0221 • Web: www.edmondswa.gov
PLANNING & DEVELOPMENT DEPARTMENT • PLANNING DIVISION
C. 1 0 9 V
Critical Area Determination (CRA2023-0069)
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.
Site Location
22831 102ND PL W
Tax Account Number
00610700200102
Property Owner
TYSON LIN
Applicant
ADELA RIOJAS
Critical Areas) Present
❑ Wetlands (ECDC 23.50): N/A
❑ Frequently Flooded Areas (ECDC 23.70): N/A
❑ Geologically Hazardous Areas (ECDC 23.80)
❑ Erosion Hazard Areas: Yes
❑ Landslide Hazard Areas: Yes
❑ Seismic Hazard Areas: N/A
❑ Fish & Wildlife Habitat Conservation Areas (ECDC 23.90)
❑ Mapped Fish & Wildlife Habitat: N/A
❑ Streams: N/A
Site Description
Located at the eastern side of102nd Place W, the subject property is currently developed as a single-
family home. In a hilly area, the site descends precipitously to the northeast and less severely to the
northwest. The southerly neighbor is elevated above this parcel by just under 10'.
According to the Soil Survey of Snohomish County, soils on the subject site consist of "Alderwood
Everett Gravelly sandy loams, 25-70% slopes" on the eastern half and "Alderwood urban land complex,
2-8%" on the western half.
According to the City LiDAR data, portions of the site contain slopes greater than 40% and thus are
classified as a potential landslide hazard, and portions of the site with slopes greater than 15% are
considered a potential erosion hazard.
Any land disturbing activity within 50 feet of the steep slopes will require a geotechnical report per
requirements of ECDC 23.80, with specific reference to ECDC 23.80.060 and ECDC 23.80.070.
Additionally, an Erosion and Sediment control plan compliant with chapter 18.30 ECDC may be required
for development on a site containing an erosion hazard area which would be reviewed as part of a
building permit.
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 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.
Unpermitted alteration of a critical area or buffer (including tree trimming or topping, dumping yard
waste, or application of pesticides or fertilizers) can lead to enforcement action and fines. Before
undertaking any work, please contact the City to verify whether critical area studies and City review is
necessary.
TRISTAN SEWELL
Planner April 18, 2023
Cited sections of the Edmonds Community Development Code (ECDC) can be found at
http://www. cod ep ublishing. com/WA/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)
Building permits — Earth Subsidence and Landslide Hazard Areas (ECDC 19.10)
City of Edmonds GIS map tool with approximate location of critical areas: http://maps.edmondswa.gov
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