HomeMy WebLinkAboutRS_Critical_Area_Report_250729_v1PAGE | 0
PREPARED FOR:
Greenberg Farrow
PREPARED BY:
Wet.land, LLC
206-309-8100
Wet.land
Critical Areas Report
4225 NE 4th Street
(Parcel 937400-0400)
Renton, Washington
29 July 2025
PAGE | i
CONTENTS
1. REPORT PURPOSE ...................................................................................................................... 1
1.1 Project Name and Purpose ------------------------------------------------------------------------------------------------------ 1
1.2 Property Owner --------------------------------------------------------------------------------------------------------------------- 1
1.3 Report Purpose --------------------------------------------------------------------------------------------------------------------- 1
1.4 Preparer Qualifications ----------------------------------------------------------------------------------------------------------- 1
2. PROJECT SITE ............................................................................................................................. 2
2.1 Project Location -------------------------------------------------------------------------------------------------------------------- 2
2.2 Project Site Description ----------------------------------------------------------------------------------------------------------- 2
2.3 Project History ---------------------------------------------------------------------------------------------------------------------- 2
3. EXISTING SITE CONDITIONS ................................................................................................. 3
3.1 Methodology------------------------------------------------------------------------------------------------------------------------- 3
3.2 Database Review Summary------------------------------------------------------------------------------------------------------ 3
3.3 Field Investigation Results ------------------------------------------------------------------------------------------------------- 4
3.3.1 Wetlands ................................................................................................................................................... 5
3.3.2 Streams ..................................................................................................................................................... 5
3.3.3 Native Vegetation ..................................................................................................................................... 5
3.4 Wildlife -------------------------------------------------------------------------------------------------------------------------------- 5
3.4.1 General Wildlife Usage ............................................................................................................................. 5
3.4.2 Federally Listed Species ........................................................................................................................... 5
3.4.3 State Listed Species ................................................................................................................................. 5
3.4.4 Local Species ............................................................................................................................................ 5
4. REGULATORY REVIEW ............................................................................................................ 6
4.1 Federal Regulations --------------------------------------------------------------------------------------------------------------- 6
4.2 State Regulations ------------------------------------------------------------------------------------------------------------------ 6
4.2.1 Washington State Department of Ecology (ECY) ..................................................................................... 6
4.2.2 Washington State Department of Fish and Wildlife (WDFW) .................................................................. 6
4.3 Local Regulations ------------------------------------------------------------------------------------------------------------------ 6
4.3.1 Shoreline Jurisdiction .............................................................................................................................. 6
4.3.2 Non-Shoreline Jurisdiction ...................................................................................................................... 6
4.3.3 Geologic Hazard Areas ............................................................................................................................. 7
4.3.4 Flood Hazard Area .................................................................................................................................... 7
5. PROPOSED PROJECT ............................................................................................................... 8
5.1 Proposed Project ------------------------------------------------------------------------------------------------------------------- 8
5.2 Site Development Alternatives ------------------------------------------------------------------------------------------------- 8
5.3 Critical Area Assessment --------------------------------------------------------------------------------------------------------- 8
6. SUMMARY ..................................................................................................................................... 9
7. REFERENCES............................................................................................................................. 10
PAGE | ii
TABLE OF TABLES
Table 1. Summary of Background Review of Publicly Available Databases (all accessed on 28 July 2025). ............. 4
APPENDICES
Appendix A: Jennifer Marriott, PWS – Resume
Appendix B: Figures
1. Vicinity Map
2. Existing Conditions Map
3. Site Plan
Appendix C: Agency Database Results
Appendix D: Photodocument
Appendix E: Wetland Rating Form
Appendix F: Approved Mitigation Planset, 2014
PAGE | iii
DISCLAIMER
This consulting report has been prepared by Wet.land, LLC based on our best professional
judgment. Any delineations, wetland ratings, stream typings, or general characterizations
were completed in accordance with the applicable regulations at the time field work was
completed. Where information was provided by Others and not collected directly by
Wet.land, LLC, such is stated within the report. Conclusions presented within this report are
based on the information available at the time of report preparation, and are accurate and true
to the best of our knowledge. The opinions and conclusions contained within this report are a
reflection of our interpretation of applicable regulations and are not final until concurrence is
provided by the appropriate agencies.
REPORT PURPOSE PAGE 1
1. Report Purpose
1.1 Project Name and Purpose
The Project (Parcel 937400-0400) is a 0.23-acre parcel located in Renton. One (1) wetland was observed off-site to
the west. Steep slopes are located on-site.
1.2 Property Owner
The Applicant for this Project is Valvoline Instant Oil Change. The Agent for this Project is Greenberg Farrow,
represented by LeAmber Yisrael:
Email: lyisrael@greenbergfarrow.com
Phone: 470-681-4359
1.3 Report Purpose
This parcel is located within the City of Renton. This report has been prepared in accordance with the requirements
of Renton Municipal Code (RMC) Chapter 3 Environmental Regulations and Overlay Districts to document the
existing conditions of this property and the proposed Project relative to critical areas. This report has also been
prepared in light of applicable State and Federal regulations.
1.4 Preparer Qualifications
Field investigations and reporting were completed by Jennifer Marriott, PWS (Appendix A).
Jennifer Marriott has a Bachelor’s Degree and a Master’s Degree in Biology from University of Central Florida, and
a second Master’s Degree in Soil and Environmental Science from the University of Florida. She has over 20 years
of experience in wetland delineations and environmental permitting.
PROJECT SITE PAGE 2
2. Project Site
2.1 Project Location
The Property is a 0.73-acre parcel located at 4225 NE 4th Street in Renton, Washington (Figure 1, Appendix B). The
Public Land Survey System location is the NW ¼ of Section 15, Township 23 North, Range 5 East, Willamette
Meridian (W.M.). The latitude/longitude for the center of the Site is 47.4882, -122.1621.
2.2 Project Site Description
The Site is developed with a paved parking lot with perimeter landscaping. This property was developed with the
parking area concurrently with the Whitman Court townhomes to the south. Access to this property is through
existing entry points in the northwest and southeast corners of the parcel. This property is surrounded by roads to
the north (NE 4th Street) and east (Whitman Court NE), townhomes to the south, and a critical areas tract to the
west. No native vegetation occurs on the parcel. A short segment of an existing pedestrian trail is located onsite
that extends south from NE 4th Street and wraps around the perimeter of the townhomes.
More detail on the existing conditions of these parcels is provided below in Chapter 3 and in Table 2.
2.3 Project History
This parcel was part of the Whitman Court PUD that was approved in 2014 (LUA14-000295) that included this
outparcel as well as the area that became the existing townhomes to the south. The total project area also included
the critical areas west of the Site that were bound into a critical areas tract at that time with mitigation actions
completed. Critical area fencing was installed at the upper limits of the buffers at that time.
EXISTING SITE CONDITIONS PAGE 3
3. Existing Site Conditions
In-depth analysis of existing conditions within the Project Site is described below.
3.1 Methodology
Prior to field investigations of the Site, a thorough review of existing publicly available databases was completed
to determine what has been previously mapped over the Site. These findings are outlined in Section 3.2 below.
During field investigations, the routine approach described in the Regional Supplement to the Corps of Engineers
Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (U.S. Army Corps of Engineers, 2010) was
used as a baseline for evaluating the Site for the presence of wetlands. This supplement is in addition to the 1987
Corps of Engineers Wetlands Delineation Manual, which serves as the baseline on which the regional supplements
build. Wetlands were rated using the Washington State Wetland Rating System for Western Washington (Hruby
2014). The presence of streams onsite was determined using the methodology described in Determining the
Ordinary High Water Mark on Streams in Washington State (Olson and Stockdale, 2010).
3.2 Database Review Summary
An in-depth review of Agency database results for this Project Site follows in Table 1, below. Databases were
reviewed for features on the site and within 200 feet of the site (the Study Area). Copies of database results are
provided in Appendix C. A Photodocument of existing site conditions is provided as Appendix D.
Databases referenced include:
• Natural Resource Conservation Service (NRCS), Websoils Survey (NRCS)
• US Fish and Wildlife (USFWS), Wetlands Online Mapper (National Wetlands Inventory, NWI) (USFWS)
• Washington State Department of Ecology (ECY) Water Quality Atlas
• Washington State Department of Fish and Wildlife (WDFW) Priority Species and Habitats
• Washington State Department of Natural Resources (WDNR) Forest Practices Application Mapping Tool
(FPAMT)
• Statewide Integrated Fish Distribution (SWIFD) Web Map
• Fish Passage Culverts Map
• Google Earth
• Historic Aerials, www.historicaerials.com
• King County iMap
• City of Renton GIS
EXISTING SITE CONDITIONS PAGE 4
Table 1. Summary of Background Review of Publicly Available Databases (all accessed on 28 July 2025).
Database Agency (Database
Manager) Data Checked
Township, Range,
Section Map WSDOT NW ¼ of Section 15, Township 23 North, Range 5 East, W.M.
Watershed
Boundaries ArcGIS
HUC 8 (12) – 17110012(0107)
WRIA 8, Cedar-Sammamish
Watershed: Madsen Creek-Cedar River
Drainage Basin – Maplewood Creek
NRCS Websoils NRCS AgC, Alderwood gravelly sandy loam, 8-15% slopes
National Wetlands
Inventory USFWS
None mapped onsite.
Adjacent to Site:
PFO1C, palustrine forested, broad-leaved deciduous,
seasonally flooded
R4SBC, Riverine, Intermittent, Streambed, seasonally flooded
Map Service
Center FEMA No mapped floodplain
Washington State
Water Quality
Atlas
ECY The nearest impaired water is 1.1 miles south, lower in the
Maplewood Creek system.
Priority Habitats
and Species (PHS) WDFW Wetlands mapped within Study Area.
Forest Practices
Application
Mapping Tool
WDNR No features mapped within Study Area.
Statewide
Integrated Fish
Distribution
(SWIFD) Web Map
NWIFC
No features mapped within Study Area.
Salmonids documented as using the lower reach of
Maplewood Creek, more than a mile downstream of Site.
Washington State
Fish Passage WDFW
No culverts mapped within Study Area. Culvert #992814 is
mapped further downstream and is documented as a full block
of fish use.
King County iMap King County No critical areas are mapped in the Study Area.
COR Maps City of Renton The stream system west of the Site is mapped by the City of
Renton.
3.3 Field Investigation Results
The Site was evaluated for critical areas on 25 July 2025. A summary of these findings is provided below. No
datasheets are provided as the Site is almost entirely paved. No wetland or stream conditions occur onsite. A
discussion of the critical areas within the Study Area are included below.
EXISTING SITE CONDITIONS PAGE 5
3.3.1 Wetlands
One wetland (Wetland A) was observed off-site to the west. This wetland was previously delineated around 2014.
Conditions are anticipated to be similar, but since this wetland occurs offsite given the current parcel configuration,
the previous work was used to provide estimated boundaries for the wetland and stream within the adjacent
Whitman Court critical area tract. This wetland was not planted as part of the Whitman Court PUD project. In its
current condition, the wetland is forested and appears to occur in association with the adjacent stream. A
comparison of aerially imagery (King County iMap) was used to see how wetland vegetation coverage has changed
over the years, and the tree cover is fairly similar between 2012 to present except where mitigation plantings
occurred previously within the buffers.
The wetland rated as a Category III wetland with a habitat score of 6 based on the current wetland rating system.
While this wetland previously rated as a Category II wetland, the rating system has undergone substantial changes
since the previous work was completed.
3.3.2 Streams
No streams were observed onsite. A stream – either the upper limits of Maplewood Creek or a tributary to
Maplewood Creek – is located through the critical areas tract west of the Site. This stream was observable from NE
4th Street, but not from elsewhere onsite. This stream receives large amounts of surface runoff from the
neighborhoods north of the Site, as well as several other wetland areas that are routed through the stormwater
infrastructure to this riparian area.
3.3.3 Native Vegetation
The Project Site lacks any native vegetation except for the native species that were planted as part of the perimeter
landscaping.
3.4 Wildlife
General observations on expected and observed wildlife usage is below.
3.4.1 General Wildlife Usage
Common urban wildlife such as small to medium mammals and birds may use the Site but offsite connectivity is
poor and onsite vegetation is lacking.
3.4.2 Federally Listed Species
No federally listed species were observed or are expected to occur onsite.
3.4.3 State Listed Species
No state listed species or priority habitats were observed onsite.
3.4.4 Local Species
Common urban wildlife are expected to use the Site. City of Renton does not have a list of local species of
importance, but does identify critical habitats, none of which occur onsite.
REGULATORY REVIEW PAGE 6
4. Regulatory Review
The Site falls under the jurisdiction of City of Renton, State of Washington, and the US Army Corps of Engineers. A
summary of the relevant regulations follows.
4.1 Federal Regulations
Waters of the US, including the wetlands and watercourses, occur on or adjacent to the Site and may be subject to
applicable Federal regulations. Wetland and stream (watercourse) impacts are regulated at the Federal level by
Sections 404 and 401 of the Clean Water Act. The US Army Corps of Engineers (USACE) is responsible for
administering compliance with Section 404 via the issuance of Nationwide or Individual Permits for any fill or
dredging activities within wetlands under Corps jurisdiction. If no actions are proposed that would directly impact
a wetland or stream, then no coordination with the USACE is necessary for Section 404 compliance.
The off-site wetland would be jurisdictional to the USACE. However, if no impacts to the wetland are proposed in
conjunction with a proposed project, then no USACE permitting would be required.
4.2 State Regulations
The wetland and stream off-site is subject to applicable State regulations. However, County regulations retaining
to wetlands are based on state guidelines and will dictate critical areas protections.
4.2.1 Washington State Department of Ecology (ECY)
Any project that is subject to Section 404 permitting is also required to comply with Section 401 Water Quality
Certification, which is administered by the Washington State Department of Ecology (ECY). If no actions are
proposed that would directly impact a wetland or stream, then no coordination with the USACE is necessary for
Section 404 compliance, which would also include Section 401 compliance.
4.2.2 Washington State Department of Fish and Wildlife (WDFW)
No features are located on the property that would fall under WDFW jurisdiction.
4.3 Local Regulations
The Site falls within the City of Renton and is subject to the regulations of the Renton Municipal Code (RMC).
4.3.1 Shoreline Jurisdiction
The Site does not occur within Shoreline jurisdiction.
4.3.2 Non-Shoreline Jurisdiction
Critical areas on the Site are subject to the regulations of Renton Municipal Code Chapter 4-3-050 – Critical Areas
Regulations.
REGULATORY REVIEW PAGE 7
Wetlands
Wetland A was rated as Category III wetlands with a Habitat Score of 6. Standard buffers for Category III wetlands
with a Habitat Score of 6 are 100 feet for a moderate to high impact adjacent land use. An additional 15-foot building
setback line is required. The previous Project applied buffers from that time and placed critical fencing and signed
around the upper limits of the 2014 buffers. Buffers based on the current code are wider than previously, but the
critical areas including their buffers are already contained within a separate tract. All of the onsite buffer is paved
with nonnative vegetation present onsite.
Wetland buffers may be modified through either buffer reduction with enhancement or buffer averaging, per RMC
4-3-050I.3. However, neither option is functional on this Site. Footnote 6 of the buffer table provided in RMC 4-3-
050G.2 allows for consideration of developed buffers: Areas that are functionally and effectively disconnected from
the wetland by a permanent road or other substantially developed surface of sufficient width and with use
characteristics such that buffer functions are not provided shall not be counted toward the minimum buffer unless
these areas can be feasibly removed, relocated or restored to provide buffer functions. The new buffer based on an
application of the current code is significantly wider (roughly three times wider than the 2014 wetland buffer) and
heavily encumbers a Site that was already permitted for development based on the current extent of asphalt.
Despite the width of buffer required by the current code, the 2014 buffer widths should apply for this project as the
Site was permitted for development with a full use of this parcel, was partially constructed with all pavement added
as well as perimeter plantings, the critical fence was installed at the time of construction after receipt of permits in
2014/2015, and the critical areas in question were bound into their own tract for long-term preservation.
Streams
No streams occur onsite. The adjacent stream is of unknown condition. This stream was documented as an
intermittent stream. WDFW lists a culvert (#922814) downstream of this location as a full blockage that does not
allow fish upstream of that culvert. Portions of the stream visible from the road are wider than two (2) feet just
downstream of the culvert, but this condition appears artificial and likely not representative of natural reaches of
this stream. Based on the WDFW culvert map documenting no fish use, this stream has been considered a non-fish-
bearing (seasonal) stream requiring a 50-foot buffer. Regardless of the current buffer width, the stream buffer from
2014 has already been bound by a critical areas fence and placed into a separate tract with this parcel permitted at
the time for full development.
Building/Structure Setback
Critical area buffers require a 15-foot building setback line to prevent encroachment into the critical areas following
construction. Sidewalks, drive aisles, stormwater and landscaping can be collocated into these structure setbacks.
4.3.3 Geologic Hazard Areas
No analysis of the geologic hazard areas is provided within this report.
4.3.4 Flood Hazard Area
No 100-year floodplains are mapped offsite to the west.
PROPOSED PROJECT PAGE 8
5. Proposed Project
5.1 Proposed Project
The Applicant proposes to redevelop the Site with a commercial building to support a new Valvoline Instant Oil
Change facility. The Project proposes to retain the same ingress/egress locations onto both NE 4th Street and
Whitman Court NE. The required limits of construction for this Project will be less than what is currently existing
pavement on the Site. The Project will meet the necessary stormwater requirements for the City of Renton with the
discharge to occur west towards the riparian corridor. The Site was designed in 2014 to collect parking lot runoff
and route the runoff from this Site south to the existing stormwater pond that then discharges into this stream
downstream of this Site.
This Site was previously developed as an outparcel to the Whitman Court townhomes and was previously designed
with a central commercial building surrounded by drive aisles and parking. The permitted drive aisles and paved
parking exist still today, though there is no building currently on this parcel.
5.2 Site Development Alternatives
The existing property is already completely developed with paved drive aisles and parking. There are no
alternatives that would be less impactful for this previously permitted property. Additionally this Site was already
permitted for a commercial use that was partially constructed so this Project is no substantial change from what
was previously permitted.
5.3 Critical Area Assessment
The Project currently proposes to pull the curb in a small amount based on the specific needs of this Project for
parking and drive aisles. However, space is still required to accommodate the necessary utilities onsite until final
site design verifies the necessary infrastructure and area required. The Project will not expand beyond the current
limits of pavement already permitted and built on-site.
SUMMARY PAGE 9
6. Summary
The subject property is a 0.73-acre parcel located in Renton. The property was previously permitted as a
commercial outparcel, of which the parking lots and drive aisles are constructed. Critical areas are located adjacent
to the Site but are contained within a separate tract with critical area fencing installed at the outer limits. The
Project would not extend its footprint beyond the existing pavement, and thus will not trigger any impacts to
critical areas beyond what was already approved and permitted in 2014.
REFERENCES PAGE 10
7. References
1. Anderson, P. S., Meyer, S., Olsen, P., & Stockdale, E. (2016). Determining the Ordinary High Water Mark for
Shoreline Management Act Compliance in Washington State. Lacey, WA: Washington Department of Ecology,
Shorelines & Environmental Assistance Program.
2. Cowardin, L. M., Carter, V., Golet, F. C., & LaRoe, E. T. (1979). Classification of Wetlands and Deepwater Habitats
of the United States. Washington, DC: U.S. Department of the Interior, Fish and Wildlife Service.
3. Environmental Laboratory. (1987). "Corps of Engineers Wetlands Delineation Manual," Technical Report Y-87-
1, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.
4. Hruby, T. (2014). Washington State Wetland Rating System for Western Washington: 2014 Update (Publication
#14-06-029). Olympia, WA: Washington Department of Ecology.
5. Renton Municipal Code 4-3-050 Critical Areas (accessed 28 July 2025).
6. U.S. Army Corps of Engineers. (2018). National Wetland Plant List, version 3.4. https://wetland-
plants.usace.army.mil/ , U.S. Army Corps of Engineers, Engineer Research and Development Center, Cold
Regions Research and Engineering Laboratory, Hanover, NH.
7. U.S. Army Corps of Engineers. (2010, May). Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0). U. S. Army Corps of
Engineers. Vicksburg, MS: U.S. Army Engineer Research and Development Center.
APPENDIX A
APPENDIX A
Jennifer Marriott, PWS – Resume
Jennifer M. Marriott, PWS
8201 164th Avenue Northeast, Suite 200, PMB 141, Redmond, WA 98052
jen@wet.land
Work: 206-309-8100 | Cell: 813-846-1684
QUALIFICATIONS
Master of Science, Soil Science, University of Florida, Gainesville, FL, 2010
Master of Science, Biology (Ecology), University of Central Florida, Orlando, FL, 2003
Bachelor of Science, Biology, University of Central Florida, Orlando, FL, 2001
Professional Wetland Scientist (No. 1891)
FOCUS AND EXPERTISE
Project Management
Project Summaries and Rapid Environmental Due Diligence Reports
Wetland and Stream Delineations/Habitat Evaluation
Wetland (Critical Areas) Permitting
Mitigation Planning
Wetland Functional Assessment
Hydric Soil Determinations
Training and mentoring of Junior staff.
EXPERIENCE
Senior Ecologist/Owner; Wet.land, LLC; March 2020 - Present
Senior Ecologist/Project Manager; Talasaea Consultants, Inc.; June 2015 – March 2020
Senior Project Scientist; BL Companies, Inc.; July 2012 – July 2014
Environmental Scientist 3; RETTEW Associates, Inc.; March 2011 – February 2012
Ecologist; Cardno-ENTRIX, Inc. (formerly known as ENTRIX, Inc., fka Biological Research
Associates); July 2003 – March 2011
SKILLS, TRAINING & PROFESSIONAL MEMBERSHIPS
Washington (Coastal Training Program Workshops)
o Revised Washington State Wetland Rating System, 2014 (April 2015)
o Using the Credit-Debit Method for Estimating Mitigation Needs (October 2015)
o Using Field Indicators for Hydric Soils (November 2015)
o Grass, Sedge, and Rush Identification for Western WA Puget Lowland Habitats (March
2016)
o How to Determine the Ordinary High Water Mark (September 2016)
Other Technical Training
o Soil Workshop, PAPSS, 2011
o Hydric Soils Workshops, 2004, 2008, 2009
o FAESS Florida State Certification Short Course, March 12-13, 2009
APPENDIX B
APPENDIX B
Figures
1. Vicinity Map
2. Existing Conditions Map
3. Proposed Impact Map
APPENDIX C
APPENDIX C
Agency Database Results
APPENDIX C
Agency Database Websites
Database Agency (Database
Manager) Website
Township, Range,
Section Map WSDOT
https://www.arcgis.com/home/webmap/viewer.
html?useExisting=1&layers=97a5ae98d8d0445
8860f64e201d155c4
Watershed Boundaries ECY
https://www.arcgis.com/home/webmap/viewer.
html?url=https%3A%2F%2Fhydro.nationalm
ap.gov%2Farcgis%2Frest%2Fservices%2Fwb
d%2FMapServer&source=sd
Websoils NRCS https://websoilsurvey.sc.egov.usda.gov/App/W
ebSoilSurvey.aspx
National Wetlands
Inventory USFWS https://www.fws.gov/wetlands/data/Mapper.ht
ml
Map Service Center FEMA https://msc.fema.gov/portal/home
Washington State Water
Quality Atlas ECY https://apps.ecology.wa.gov/waterqualityatlas/
wqa/map
Priority Habitats and
Species (PHS) WDFW https://geodataservices.wdfw.wa.gov/hp/phs/
Forest Practices
Application Mapping
Tool
WDNR https://fpamt.dnr.wa.gov/default.aspx
Statewide Integrated
Fish Distribution
(SWIFD) Web Map
NWIFC https://geo.nwifc.org/swifd/
Washington State Fish
Passage WDFW https://geodataservices.wdfw.wa.gov/hp/fishpa
ssage/index.html
King County iMap King County https://gismaps.kingcounty.gov/imap/
COR Maps City of Renton https://maps.rentonwa.gov/Html5viewer/Index.html?
viewer=cormaps
VIOC Renton
U.S. Fish and Wildlife Service, National Standards and Support Team,wetlands_team@fws.gov
Wetlands
Estuarine and Marine Deepwater
Estuarine and Marine Wetland
Freshwater Emergent Wetland
Freshwater Forested/Shrub Wetland
Freshwater Pond
Lake
Other
Riverine
July 29, 2025
0 0.085 0.170.0425 mi
0 0.1 0.20.05 km
1:5,137
This page was produced by the NWI mapper
National Wetlands Inventory (NWI)
This map is for general reference only. The US Fish and Wildlife Service is not responsible for the accuracy or currentness of the base data shown on this map. All wetlands related data should be used in accordance with the layer metadata found on the Wetlands Mapper web site.
Hydric Rating by Map Unit—King County Area, Washington
(VIOC Renton)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/29/2025
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Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS84
0 30 60 120 180Feet
0 10 20 40 60Meters
Map Scale: 1:700 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Rating Polygons
Hydric (100%)
Hydric (66 to 99%)
Hydric (33 to 65%)
Hydric (1 to 32%)
Not Hydric (0%)
Not rated or not available
Soil Rating Lines
Hydric (100%)
Hydric (66 to 99%)
Hydric (33 to 65%)
Hydric (1 to 32%)
Not Hydric (0%)
Not rated or not available
Soil Rating Points
Hydric (100%)
Hydric (66 to 99%)
Hydric (33 to 65%)
Hydric (1 to 32%)
Not Hydric (0%)
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: King County Area, Washington
Survey Area Data: Version 20, Aug 27, 2024
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jul 31, 2022—Aug 8,
2022
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Hydric Rating by Map Unit—King County Area, Washington
(VIOC Renton)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/29/2025
Page 2 of 5
Hydric Rating by Map Unit
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
AgC Alderwood gravelly
sandy loam, 8 to 15
percent slopes
5 2.0 100.0%
Totals for Area of Interest 2.0 100.0%
Hydric Rating by Map Unit—King County Area, Washington VIOC Renton
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/29/2025
Page 3 of 5
Description
This rating indicates the percentage of map units that meets the criteria for hydric
soils. Map units are composed of one or more map unit components or soil
types, each of which is rated as hydric soil or not hydric. Map units that are made
up dominantly of hydric soils may have small areas of minor nonhydric
components in the higher positions on the landform, and map units that are made
up dominantly of nonhydric soils may have small areas of minor hydric
components in the lower positions on the landform. Each map unit is rated based
on its respective components and the percentage of each component within the
map unit.
The thematic map is color coded based on the composition of hydric
components. The five color classes are separated as 100 percent hydric
components, 66 to 99 percent hydric components, 33 to 65 percent hydric
components, 1 to 32 percent hydric components, and less than one percent
hydric components.
In Web Soil Survey, the Summary by Map Unit table that is displayed below the
map pane contains a column named 'Rating'. In this column the percentage of
each map unit that is classified as hydric is displayed.
Hydric soils are defined by the National Technical Committee for Hydric Soils
(NTCHS) as soils that formed under conditions of saturation, flooding, or ponding
long enough during the growing season to develop anaerobic conditions in the
upper part (Federal Register, 1994). Under natural conditions, these soils are
either saturated or inundated long enough during the growing season to support
the growth and reproduction of hydrophytic vegetation.
The NTCHS definition identifies general soil properties that are associated with
wetness. In order to determine whether a specific soil is a hydric soil or nonhydric
soil, however, more specific information, such as information about the depth and
duration of the water table, is needed. Thus, criteria that identify those estimated
soil properties unique to hydric soils have been established (Federal Register,
2002). These criteria are used to identify map unit components that normally are
associated with wetlands. The criteria used are selected estimated soil properties
that are described in "Soil Taxonomy" (Soil Survey Staff, 1999) and "Keys to Soil
Taxonomy" (Soil Survey Staff, 2006) and in the "Soil Survey Manual" (Soil Survey
Division Staff, 1993).
If soils are wet enough for a long enough period of time to be considered hydric,
they should exhibit certain properties that can be easily observed in the field.
These visible properties are indicators of hydric soils. The indicators used to
make onsite determinations of hydric soils are specified in "Field Indicators of
Hydric Soils in the United States" (Hurt and Vasilas, 2006).
References:
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hydric Rating by Map Unit—King County Area, Washington VIOC Renton
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/29/2025
Page 4 of 5
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18.
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources
Conservation Service. U.S. Department of Agriculture Handbook 436.
Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service.
Rating Options
Aggregation Method: Percent Present
Component Percent Cutoff: None Specified
Tie-break Rule: Lower
Hydric Rating by Map Unit—King County Area, Washington VIOC Renton
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/29/2025
Page 5 of 5
PHS Species/Habitats Overview:
Occurence Name Federal Status State Status Sensitive Location
Freshwater Forested/Shrub
Wetland N/A N/A No
Freshwater Pond N/A N/A No
Priority Habitats and Species on the Web
Buffer radius: 330 Feet
Report Date: 07/29/2025, Parcel ID: 9374000400
Freshwater Forested/Shrub Wetland
Priority Area Aquatic Habitat
Site Name N/A
Accuracy NA
Notes Wetland System: Freshwater Forested/Shrub Wetland - NWI Code:
PFO1C
Source Dataset NWIWetlands
Source Name Not Given
Source Entity US Fish and Wildlife Service
Federal Status N/A
State Status N/A
PHS Listing Status PHS Listed Occurrence
Sensitive N
SGCN N
Display Resolution AS MAPPED
ManagementRecommendations http://www.ecy.wa.gov/programs/sea/wetlands/bas/index.html
Geometry Type Polygons
Freshwater Pond
Priority Area Aquatic Habitat
Site Name N/A
Accuracy NA
Notes Wetland System: Freshwater Pond - NWI Code: PUSCx
Source Dataset NWIWetlands
Source Name Not Given
Source Entity US Fish and Wildlife Service
Federal Status N/A
State Status N/A
PHS Listing Status PHS Listed Occurrence
Sensitive N
SGCN N
Display Resolution AS MAPPED
ManagementRecommendations http://www.ecy.wa.gov/programs/sea/wetlands/bas/index.html
Geometry Type Polygons
DISCLAIMER. This report includes information that the Washington Department of Fish and Wildlife (WDFW) maintains in a central computer database. It is not an attempt to provide you with an official agency response as to the impacts of your project on fish and wildlife. This information only documents the location of fish and wildlife resources to the best of our knowledge. It is not a complete inventory and it is important to note that fish and wildlife resources may occur in areas not currently known to WDFW biologists, or in areas for which comprehensive surveys have not been conducted. Site specific surveys are frequently necesssary to rule out the presence of priority resources. Locations of fish and wildlife resources are subject to variation caused by disturbance, changes in season and weather, and other factors. WDFW does not recommend using reports more than six months old.
PHS Species/Habitats Details:
WDFW Fish Passage and Diversion Screening Inventory Database
Site Description Report
Latitude (WGS 84):47.483383
Longitude (WGS 84):-122.159436
East (NAD 83 HARN)1,230,110.1
North (NAD 83 HARN)788,409.1
Geographic Coordinates
Site ID 922814
Road Name:Bremerton Pl NE
Mile Post:-999.99
WDFW Region:4
Stream:Maplewood Cr
Tributary To:Cedar R
WRIA:08
River Mile:-999.99
Location/Directions
Site Comments
NFB due to US SLW<.61 m.
Project CITY
Name:City of Renton
General Location
Waterbody
Owner
County:King
Fish Use Potential:No
FUP Criteria:
Type:City
Sockeye
Pink
Chum
Chinook
Coho
Steelhead
Sea Run Cutthroat
Resident Trout
Bull Trout
PI Species
Culvert
Non-Culvert Xing Fishway
Natural Barrier
Other
Dam Diversion
Mitigated
Associated Features
These data represent a snapshot of the Washington Department of Fish and Wildlife's current records. Due to the ongoing nature of assessment
and inventory of these features, these data may not accurately represent conditions on the ground, and are subject to change.
10/3/2022
Site ID:922814
Stream:Maplewood Cr
Tributary To:Cedar R
WRIA:08
WDFW Fish Passage and Diversion Screening Inventory Database
Level A Culvert Assessment Report
Fish Use Potential:No
Latitude:47.483383
Longitude:-122.159436
No Image Available
Field Crew:Harris;Noble;Sharp Review Date:5/26/2022
Average Width (m):-99.99
Culvert/Stream Width Ratio:-99.99
Length (m):-999.99
Max Depth (m):-99.99
OHW Width (m):-999.99
Fill Depth (m):-999.90
Plunge Pool
Recheck:
Channel Description
Road
Comments
Inlet .3 CAL RND leading to Stand pipe.
Survey Type:Length (m):Spawning (sq m):
Rearing (sq m):
Potential Habitat Gain
PI Total
Barrier:N/A Passability (%):N/A
Reason:N/A
Assessment Results
Method:N/A
Significant Reach:N/A
Data Source:Washington Department of Fish and Wildlife
Fishway Present:No
Toe Width (m):
Tidal Influence:Tidegate Present:
ID Shape Material Span Rise Length CountersunkWSDrop Location Slope (%)WDIC Apron
Culvert Details Level A Parameters
Backwater Sediment
RND OTH 1.07 1.07 -999.90 -99.99 -99.99-99.991.1
All dimensions in meters
These data represent a snapshot of the Washington Department of Fish and Wildlife's current records. Due to the ongoing nature of assessment
and inventory of these features, these data may not accurately represent conditions on the ground, and are subject to change.
10/3/2022
Site ID:922814
Stream:Maplewood Cr
Tributary To:Cedar R
WRIA:08
WDFW Fish Passage and Diversion Screening Inventory Database
Image Report - Active
Fish Use Potential:No
Latitude:47.483383
Longitude:-122.159436
Culvert
Non-Culvert Xing Fishway
Natural Barrier
Other
Dam Diversion
Associated Features
Image Name: 922814_1.JPG
Image Name: 922814_3.JPG
Image Name: 922814_2.JPG
These data represent a snapshot of the Washington Department of Fish and Wildlife's current records. Due to the ongoing nature of assessment
and inventory of these features, these data may not accurately represent conditions on the ground, and are subject to change.
10/3/2022
Office of the Chief Information Officer (OCIO), Department of Natural
Resources (DNR), Forest Practices Division, Department of Natural Resources
(DNR), Engineering Division
Extreme care was used during the compilation of this map to ensure
its accuracy. However, due to changes in data and the need to
rely on outside information, the Department of Natural Resources
cannot accept responsibility for errors or omissions, and therefore, there are no warranties that accompany this material.
0 1,000 2,000500
Feet
Date: 7/29/2025 Time: 4:03 PM
Map Symbols Additional Information Legal Description
Forest Practices Activity Map - Application #______________k
#*Waste Area
~~~Harvest Boundary
Stream
Rock Pit
6 Landing
:Clumped
WRTS/GRTSExisting Structure
Road Construction
RMZ / WMZ Buffers
Approximate Scale :1:12,000
S15 T23.0N R05.0E,
1.11 mi
VIOC Renton
Esri Community Maps Contributors, WSU Facilities Services GIS, KingCounty, WA State Parks GIS, Esri, TomTom, Garmin, SafeGraph,GeoTechnologies, Inc, METI/NASA, USGS, Bureau of Land Management,
July 29, 2025
0 0.2 0.40.1
Miles
K
Assessed Water/Sediment
WaterCategory 5 - 303d
Category 4CCategory 4BCategory 4ACategory 2Category 1
SedimentCategory 5 - 303d
Category 4CCategory 4BCategory 4ACategory 2Category 1
Township/Range/SectionT/R/S boundary
Water Resource Inventory Areas
WRIA boundary
Subbasins (12 digit HUCs)
HUC boundary
APPENDIX D
APPENDIX D
Photodocument
#0249 JULY 2025 PHOTODOCUMENT
Site from northwest corner facing southeast. Site on left, facing south showing pedestrian trail.
Current site conditions facing northeast.
APPENDIX E
APPENDIX E
Wetland Rating Form
A
Wetland A 7/25/25
J. Marriott X 2024
Riverine X
6 6 6 18
x
III x
A
8
2
10
X
2
1
0
1
0
4
X
0
0
0
0x
A
4
Ratio of 6.6, estimated
7
11x
1
1
0
2
x
1
0
1
x
A
x
x
1
x
x
x
2
1
1
5A
x
xx
3
8
x
1
0
-2
-1
x
2
x
x
x
A
x
x
A
APPENDIX F
APPENDIX F
Approved Wetland Mitigation Planset, 28 July 2014, Altmann Oliver Associates, LLC
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