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Critical Area Determination CRA2021-0123CITY OF EDMONDS 121 5t" Avenue North, Edmonds WA 98020 Phone: 425.771.0220 • Fax: 425.771.0221 • Web: www.edmondswa DEVELOPMENT SERVICES DEPARTMENT • PLANNING DIVISION `nC. 18y1i 7/8/2021 LINDSEY SHARP 835 12TH AVE N EDMONDS, WA 98020-2935 Subject: Critical Areas Determination (CRA2021-0123) Site Address: 835 12TH AVE N Dear Applicant/Owner, Please find the enclosed critical area determination for the Critical Areas Checklist you submitted to the City of Edmonds Planning Division. The critical area determination for your property is "STUDY REQUIRED." Note that this determination is a site -specific determination and not a project -specific determination. If the critical area determination is "STUDY REQUIRED," additional critical areas information or critical areas specific studies may be required for development or alteration of your property depending on the location of the activity. "WAIVER" means no further critical area review is required for development or alteration of your property. If you have any questions regarding this critical area determination, please contact the planner on duty at 425.771.0220. Regards, MICHELE SZAFRAN Planning Division Development Services Department Enc: Critical Area Determination CITY OF EDMONDS 121 5t" Avenue North, Edmonds WA 98020 Phone: 425.771.0220 • Fax: 425.771.0221 • Web: www.edmondswa.gov DEVELOPMENT SERVICES DEPARTMENT • PLANNING DIVISION C. 189%J Critical Area Determination (CRA2021-0123) 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 835 12TH AVE N Tax Account Number 00548900002111 Property Owner LINDSEY SHARP Applicant LINDSEY SHARP Critical Area(s) Present ❑ Wetlands (ECDC 23.50): NA ❑ Frequently Flooded Areas (ECDC 23.70): NA ❑ Geologically Hazardous Areas (ECDC 23.80) ❑ Erosion Hazard Areas: Yes ❑ Landslide Hazard Areas: Yes ❑ Seismic Hazard Areas: NA ❑ Fish & Wildlife Habitat Conservation Areas (ECDC 23.90) ❑ Mapped Fish & Wildlife Habitat: NA ❑ Streams: NA Site Description The subject property is located west of 12th Ave. N. off a private access drive. Soils on the subject site are Alderwood gravelly sandy loam, 15-25% slopes. The eastern portion of the property contains some relatively level areas while the property drops off sharply to the west of the existing residence. According to the city LiDAR maps the slope along the western portion of the site is greater than 40%. Per ECDC 23.80.020.13.4 any slope 40 percent or greater that exceeds a vertical height of 10 feet, shall be considered a potential landslide hazard. Since steep slopes are located on and adjacent to the subject site, any land disturbing activity within 50 feet of the steep slope may be subject to the geotechnical report requirements of ECDC 23.80.060 and ECDC 23.80.070. Per the City LiDAR data, portions of the site also contain slopes greater than a 15% slope and thus are steep enough to be considered an Erosion Hazard Area. 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. 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. MICHELE SZAFRAN Name, Title Cited sections of the Edmonds Community Development Code (ECDC) can be found at http://www.codepublishing.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) 7/8/2021 Date City of Edmonds GIS map tool with approximate location of critical areas: http://maps.edmondswa.gov Page 12 City of Edmonds CRITICAL AREA MAP Lyn ramonds ^ N Il Terri. 'D 'V N V Legend N Creeks 00 Seismic Hazard Areas Earth Subsidence and Landslide L! Minimum Buffer Adjacent to Hat voo N N � Wetlands Q1 oOp N Wetlands Boundary NN N A — - Wetland Boundaries Not Completel N N N Wetland Known Extents A � O1 Floodplains ® A ® AE — -- { ® VE Contour Lines M 2 •r � 10, 50 100 1� Landslide Hazard Area 40% Severe Erosion Hazard 15%-40% ��`� �� ^� 'L c�� ❑ Erosion Hazard Areas 15%-40% ArcSDE.GIS.STREET_CENTERLINE <all other values, 2 5,4 s O 9:71:7:8 1:379 O Notes 835 12th Ave. N. 0 31.57 63.1 Feet 564 47.0 This map is a user generated static output from an Internet mapping site and is for CRA2021-0123 reference only. Data layers that appear on this map may or may not be accurate, WGS_1984_ Web _Mercator _Auxiliary —Sphere current, or otherwise reliable. © City of Edmonds THIS MAP IS NOT TO BE USED FOR DESIGN OR CONSTRUCTION