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ATTACHMENT 24: HABITAT
DATA REPORT
Exhibit 8
Docusign Envelope ID: D31D61AF-180E-439C-B708-0C917E2644A7
425-869-2670 ■ 15325 SE 30th Place, Suite 300 ■ Bellevue, Washington 98007 ■ www.dowl.com
Critical Areas Found on the Site
The City of Renton critical area maps show that the entire Renton Municipal Airport
property is within a Zone 2 Aquifer Protection Area. The City of Renton Flood Hazard
Map shows the entire Renton Municipal Airport property is mapped as within a FEMA
Flood Zone X – Non-Regulatory. Flood Zone X indicates an area with moderate to low
risk for floods.
There are no other critical areas mapped within the Renton Municipal Airport property.
However, the Cedar River, a Shoreline of the State, is immediately adjacent to the
eastern property boundary. The proposed project is entirely outside of the floodway and
floodplain.
Habitat Found on the Site
The Renton Municipal Airport contains little to no habitat features. The site is
predominately paved areas, with mowed grasses. The airport site contains numerous
buildings and structures used for aviation facilities and operations.
Disturbed Areas
The entire airport property is disturbed, and a significant portion of the property is
paved.
Species Associated with Cover Type
The vegetative cover type is predominately mowed grasses which would provide limited
habitat for small mammals and city birds including crows and starlings.
Critical Wildlife Species
A review of Washington Department of Fish and Wildlife (WDFW) Priority Habitats and
Species (PHS) map tool showed there are no priority wildlife species present on the
airport property.
However, the Cedar River, adjacent to the airport property, contains the following
priority fish species: sockeye (Oncorhynchus nerka), coho (Onchorhynchus kisutch),
Chinook (Oncorhynchus tshawytscha), cutthroat trout (Oncorhyncus clarkii), kokanee
(Oncorhyncus nerka), steelhead (Oncorhyncus mykiss), Dolly Varden (Salvelinus
malma), and bull trout (Salvelinus confluentus).
Migration or Movement Corridors
The Renton Municipal Airport is within the Pacific flyway, a major migrating corridor for
birds in North America west of the continental divide. However, the project site itself is
DATE: July 22, 2024
APPLICANT: William Adams, Renton Municipal Airport
616 West Perimeter Road, Renton WA 98057
(206) 775 6862
wadams@rentonwa.gov
SUBJECT: Renton Aprons – Habitat Data Report Narrative and Critical Areas Study
Docusign Envelope ID: D31D61AF-180E-439C-B708-0C917E2644A7
MEMORANDUM
Page 2 of 3
not a known congregation point for migrating birds. Additionally, the Cedar River is an
important migration corridor for salmonid species.
Existing Habitat Functions and Values
The Renton Municipal Airport provides little to no habitat functions or values. The site is
so disturbed and dominated by urban development that the site provides little to no
benefit to wildlife species.
Impacts and Proposed Habitat Alterations
The proposed project will result in removal of approximately 3,900 square feet of grass
at the Building 243 project site. The site will be revegetated with several landscape
island which will include small trees and shrubs.
A habitat management program is not proposed because the project will not result in
any permanent habitat impacts.
Endangered Species Act Compliance
There are no Endangered Species Act listed species present on the airport site. There
are listed fish species documented in the Cedar River. The project does not include any
work that would result in impacts to the Cedar River and therefore, would not impact
any listed fish species.
Best Management Practices
A Temporary Erosion and Sediment Control Plan (TESC) and Stormwater Pollution
Prevention Plan (SWPPP) were developed for this site to provide temporary sediment
control measures while construction is ongoing. Temporary erosion control measures
will be in place during construction to minimize impacts.
Maintenance, Monitoring and Contingency Plans
No maintenance, monitoring or contingency plans are proposed because the project will
not impact any critical areas. No mitigation is proposed.
Accuracy and Best Available Science
The accuracy of this narrative is based on the accuracy of the available sources that
were reviewed in July 2024.
The project area incorporated the use of best available science by reviewing the
following sources:
• City of Renton Aquifer Protection, Coal Mine Hazard, Erosion Hazard, Flood
Hazard, Landslide Hazard and Steep Slopes Sensitive Areas Maps (2022)
• King County iMap layers for Environmentally Sensitive Areas, Flooding Info,
Hydrography and Hydrology, Landslides, Stormwater Services and Elevation
Contours
• Google Earth Satellite Imagery dated April 13, 2024
• Washington Department of Fish and Wildlife Priority Habitat and Species Map
Tool
• Northwest Indian Fisheries Statewide Integrated Fish Distribution online map tool
• U.S. Fish and Wildlife Service National Wetland Inventory Wetlands Mapper
Docusign Envelope ID: D31D61AF-180E-439C-B708-0C917E2644A7
MEMORANDUM
Page 3 of 3
Qualifications of Preparers
This report was prepared on July 11, 2024, by Michelle Brownell and reviewed by
Theresa Dutchuk. Michelle has a B.S. in Wildlife Ecology and over 5 years of
experience as an environmental consultant. Theresa has 15 years of NEPA and
environmental compliance experience. No field work was conducted to complete this
evaluation.
Docusign Envelope ID: D31D61AF-180E-439C-B708-0C917E2644A7