HomeMy WebLinkAbout49- CRITICAL AREAS REPORTPAGE | 0
PREPARED FOR:
Pomona Woods, LLC
PREPARED BY:
Wet.land, LLC
206-309-8100
Wet.land
Critical Areas Report
Pomona Woods
Jefferson County, Washington
22 July 2022
Exhibit 49
Exhibit 49 Page 0630
PAGE | i
CONTENTS
1. REPORT PURPOSE ..................................................................................................................... 2
1.1 Project Name and Purpose ------------------------------------------------------------------------------------------------------ 2
1.2 Applicant ----------------------------------------------------------------------------------------------------------------------------- 2
1.3 Report Purpose --------------------------------------------------------------------------------------------------------------------- 2
1.4 Preparer Qualifications ----------------------------------------------------------------------------------------------------------- 3
2. PROJECT SITE ............................................................................................................................. 4
2.1 Project Location -------------------------------------------------------------------------------------------------------------------- 4
2.2 Project Site Description ----------------------------------------------------------------------------------------------------------- 4
3. EXISTING SITE CONDITIONS ................................................................................................. 5
3.1 Methodology------------------------------------------------------------------------------------------------------------------------- 5
3.2 Database Review Summary------------------------------------------------------------------------------------------------------ 5
3.3 Field Investigation Results ------------------------------------------------------------------------------------------------------- 7
3.3.1 Weather .................................................................................................................................................... 7
3.3.2 Wetlands ................................................................................................................................................... 8
3.3.3 Streams ..................................................................................................................................................... 9
3.3.4 Native Vegetation and Habitat .............................................................................................................. 10
3.4 Wildlife ------------------------------------------------------------------------------------------------------------------------------- 11
3.4.1 General Wildlife Usage ........................................................................................................................... 11
3.4.2 Federally Listed Species ......................................................................................................................... 12
3.4.3 State Listed Species ............................................................................................................................... 12
3.4.4 Local Species .......................................................................................................................................... 12
4. REGULATORY REVIEW ........................................................................................................... 13
4.1 Federal Regulations -------------------------------------------------------------------------------------------------------------- 13
4.2 State Regulations ----------------------------------------------------------------------------------------------------------------- 13
4.2.1 Washington State Department of Ecology (ECY) ................................................................................... 13
4.2.2 Washington State Department of Fish & Wildlife (WDFW) .................................................................... 13
4.3 Local Regulations ----------------------------------------------------------------------------------------------------------------- 13
4.3.1 Shoreline Jurisdiction ............................................................................................................................ 13
4.3.2 Non-Shoreline Jurisdiction .................................................................................................................... 13
4.3.3 Flood Hazard Area .................................................................................................................................. 16
5. PROPOSED PROJECT .............................................................................................................. 17
5.1 Proposed Project ------------------------------------------------------------------------------------------------------------------ 17
5.2 Stormwater Management ------------------------------------------------------------------------------------------------------- 17
6. CRITICAL AREAS IMPACTS ................................................................................................... 18
6.1 Assessment of Development Impacts ---------------------------------------------------------------------------------------- 18
6.1.1 Wetland Impacts .................................................................................................................................... 18
6.1.2 Wetland Buffer Impacts ......................................................................................................................... 18
6.1.3 Stream Impacts ...................................................................................................................................... 18
6.1.4 Habitat Impacts ...................................................................................................................................... 18
6.1.5 Listed Species Impacts ........................................................................................................................... 19
7. SUMMARY ................................................................................................................................... 20
8. REFERENCES............................................................................................................................. 21
Exhibit 49 Page 0631
PAGE | ii
TABLE OF TABLES
Table 1. Summary of Project Parcels ............................................................................................................................ 4
Table 2. Summary of Agency Databases ....................................................................................................................... 6
Table 3. Summary of Critical Areas ............................................................................................................................... 7
Table 4. WETS Data Site Visit, 1992 – 2022, Chimacum Weather Stations, WA ............................................................ 7
Table 5. Summary of Listed Species and Potential for Occurrence ........................................................................... 11
Table 6. Summary of Critical Areas and Buffers ......................................................................................................... 14
Table 7. Required Measures to Minimize Impacts to Wetlands (Table 18.22.730(1)(b)) ........................................... 15
Table 8. Summary of Habitat Impacts ........................................................................................................................ 18
APPENDICES
Appendix A: Jennifer Marriott, PWS – Resume
Kristen Numata, PWS - Resume
Appendix B: Figures
1. Vicinity Map
2. Web Soil Survey Map
3. Existing Conditions Map
4. Habitat Types
5. Impacts and Mitigation Map
Appendix C: Agency Database Results
Appendix D: Photodocument
Appendix E: Datasheets
Appendix F: Wetland Ratings and Figures
Appendix G: Site Plan
Exhibit 49 Page 0632
REPORT PURPOSE PAGE 1
DISCLAIMER
This report has been prepared by Wet.land, LLC based on our best professional judgment, and
is intended for the use outlined in Section 1.3 below. Use of this report or its appendices outside
of its intended purpose is a breach of the contract under which this document was prepared.
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.
Exhibit 49 Page 0633
REPORT PURPOSE PAGE 2
1. Report Purpose
1.1 Project Name and Purpose
The Pomona Woods Project proposes to develop a commercial, small-scale tourist and recreational retreat center
in Jefferson County, Washington. The Project will not impact critical areas. The Project will require the removal of
a select area of trees that occur outside of any critical areas, but no listed species were documented in these areas.
A small area within a wetland buffer was disturbed as part of legally occurring site investigations that will be
restored post-construction through a one-time supplemental planting to restore the disturbed native understory.
1.2 Applicant
The Applicant for the Pomona Woods Project is Pomona Woods, LLC, represented by Ann Burkhart:
Pomona Woods, LLC, c/o Ann Burkhart, PO Box 145, Port Hadlock, WA 98339
Phone: (206) 480 – 8467 Email: pomonawoods@gmail.com
1.3 Report Purpose
This report has been prepared with the intent of using one set of reports for all local, State, and Federal agencies
through which permits are required.
Permitting Agencies:
• US Army Corps of Engineers (USACE);
• Washington State Department of Ecology (ECY) (through the USACE permitting process);
• Washington Department of Fish and Wildlife (WDFW); and
• Jefferson County (County).
This below report is intended to serve as a Critical Areas Report for the Pomona Woods Project that will discuss the
proposed Project impacts to wetlands, streams, listed species, and wildlife habitat; and mitigation to compensate
for critical area impacts.
This report has been prepared in accordance with the requirements of the Jefferson County Code (JCC) Chapter
18.22 Critical Areas. This report has also been prepared in light of applicable State and Federal regulations.
Exhibit 49 Page 0634
REPORT PURPOSE PAGE 3
1.4 Preparer Qualifications
Field investigations and reporting were completed by Jennifer Marriott, PWS and Kristen Numata, 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 18 years
of experience in wetland delineations and environmental permitting.
Kristen Numata has two Bachelor’s Degrees in Biology and Environmental Science from Santa Clara University, and
she has over six years of experience in environmental consulting.
Exhibit 49 Page 0635
PROJECT SITE PAGE 4
2. Project Site
2.1 Project Location
The Project Site is located in unincorporated Jefferson County, Washington (Appendix B, Figure 1). The
latitude/longitude coordinate for the center of the site is 47.99940, -122.72653. The Public Land Survey System
location is Section 18, Township 29 North, Range 1 East, Willamette Meridian (W.M.).
2.2 Project Site Description
The project is comprised of two parcels, 921183008 and 921183002, and totals approximately 21.6 acres (Table 1).
The Pomona Woods property is undeveloped and dominated by native forest. The Site is bound to the east by Oak
Bay Road, forestry lands to the north and west, and a single-family residence to the northeast and south.
Table 1. Summary of Project Parcels
Parcel Size (Acres) Zoning
921183008 20.2 RR-20 – Rural Residential
921183002 1.4 RR-5 – Rural Residential
The project parcels are zoned as Rural Residential, RR-5 and RR-20 (Table 1). The following are descriptions of Rural
Residential, as outlined in Jefferson County Code (JCC) 18.15.015:
1. Rural Residential.
c. Rural Residential 1 Unit/5 Acres (RR 1:5). The purpose of this district is to allow for continued residential
development in areas of Jefferson County consisting of relatively high density pre-existing patterns of
development, along the county’s coastal areas, and within areas within or adjacent to rural centers and rural
crossroads. In addition, this district seeks to support and foster Jefferson County’s existing rural residential
landscape and character by restricting new land divisions to a base density of one unit per five acres.
d. Rural Residential 1 Unit/20 Acres (RR 1:20). The purpose of this district is to provide a buffer in areas adjacent
to UGAs and designated forest and agricultural lands of long-term commercial significance, as well as
protecting areas identified as possessing area-wide environmental features which constrain development
such as shoreline areas or areas of steep and unstable slopes. The district also protects land from premature
conversion to higher residential densities prior to an established need.
Elevations at the property range from 150 to 360 above sea level, and the Site slopes downhill from west to east.
Three (3) culverts are located along the property frontage that convey flow under Oak Bay Road from a roadside
ditch along the westside of Oak Bay Road.
More detail on the existing conditions of these parcels is provided below in Chapter 3.
Exhibit 49 Page 0636
EXISTING SITE CONDITIONS PAGE 5
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 2, below. Databases were
reviewed for features on the site and within 300 feet of the site. Copies of database results are provided in Appendix
C. Databases referenced include:
• Natural Resource Conservation Service (NRCS), Websoils Survey (NRCS) (Figure 2)
• 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
• Salmonscape
• StreamNet
• Fish Passage Culverts Map
• Google Earth
• Historic Aerials, www.historicaerials.com
• Jefferson County GIS
Exhibit 49 Page 0637
EXISTING SITE CONDITIONS PAGE 6
Table 2. Summary of Agency Databases
Database Agency (Database
Manager) Results
Township, Range,
Section Map WSDOT Section 18, Township 29 North, Range 1 East,
Willamette Meridian (W.M.)
Watershed Boundaries ECY
HUC 8 (12) – 17110019(0803)
Oak Bay Drainage Basin
WRIA 19 – Quilcene-Snow
Websoils NRCS
Figure 2.
AmD – Alderwood gravelly loam, 15 – 30% slopes
CfD – Cassolary sandy loam, 15 – 30% slopes
SnC – Sinclair gravelly sandy loam, 0 – 15% slopes
SnD – Sinclair gravelly sandy loam, 15 – 30% slopes
None are considered hydric soils.
National Wetlands
Inventory USFWS No features mapped within the study area.
Map Service Center FEMA No features mapped within the study area.
Washington State Water
Quality Atlas ECY No features mapped within the study area.
Priority Habitats and
Species (PHS) WDFW No features mapped within the study area.
Forest Practices
Application Mapping
Tool
WDNR No features mapped within the study area.
Statewide Integrated
Fish Distribution
(SWIFD) Web Map
NWIFC No features mapped within the study area.
SalmonScape WDFW No features mapped within the study area.
StreamNet Mapper The Pacific States Marine
Fisheries Mapper No features mapped within the study area.
Washington State Fish
Passage WDFW No features mapped within the study area.
Public Land Records Jefferson County No features mapped within the study area.
Exhibit 49 Page 0638
EXISTING SITE CONDITIONS PAGE 7
3.3 Field Investigation Results
The Site was evaluated for critical areas on 25 April and 2 May 2022. A summary of these findings is provided below
and are depicted on Figure 3. Site photos are included in Appendix D.
Table 3. Summary of Critical Areas
Critical Area ID Wetland Category/Stream
Typing Feature Type (Cowardin/Flow)
Wetland A IV PSS/EM
Wetland B IV PEM
Wetland D IV PSS
Wetland E IV PSS/EM
Stream 1 Type Ns Flows east
Stream 2 Type Ns Flows east
*The “Wetland C” label was not used in this mapping effort.
3.3.1 Weather
Precipitation data for the three months prior to field work were collected and analysed from the Chimacum 4 S and
Chimacum 2.6 SSE weather stations (Table 4). The 30-year rolling averages for precipitation were collected from
the Chimacum 4 S weather station. However, the monthly total precipitation data was collected from the
Chimacum 2.6 SSE weather station, which is located closer to the project site.
Table 4. WETS Data Site Visit, 1992 – 2022, Chimacum Weather Stations, WA
Month
30%
chance
will have
more than1
30%
chance
will have
less than
Monthly
Total
Precipitation2
Condition Value Weight Total
January 2.54 4.39 3.98 Normal 2 1 2
February 1.49 3.09 1.84 Normal 2 2 4
March 1.99 3.70 2.06 Normal 2 3 6
April 1 –
24 1.63 2.63 2.94 Wet4
Sum3 12
1 Data collected from Chimacum 4 S Station
2 Data collected from Chimacum 2.6 SSE Station
3 Dry = 6 – 9 points; Normal = 10 – 14 points; Wet = 15 – 18 points
4 April through to the 24th was wetter than normal, but data was not used towards determining overall climactic conditions.
Exhibit 49 Page 0639
EXISTING SITE CONDITIONS PAGE 8
It was determined that this period fell within normal rainfall and any wetland hydrology would accurately reflect
wetland conditions. However, April was wetter than normal when evaluated alone so that the field visits did occur
after above-normal rainfall. The nature of the 30-day rolling averages provides for an overall view into localized
weather prior to a field visit to determine if normal rainfall occurred consistent with federal guidelines, but isolated
heavy rain events can affect field findings on a site-specific basis.
3.3.2 Wetlands
Four (4) wetlands (Wetland A, B, D, and E) were identified on or adjacent to the subject property (Figure 3). Data
forms are provided in Appendix E. The “Wetland C” label was unintentionally skipped in field work labeling.
Wetland A
Wetland A is a palustrine scrub-shrub and emergent wetland located at the southwest corner of the Site and
continues off-site to the southeast. Wetland A is dominated by salmonberry (Rubus spectabilis) and slough sedge
(Carex obnupta). The wetland is located in a surface depression and the hydrology is supported by precipitation.
During the site visit, soils were under water but were dark and super saturated. Soils were assumed to be hydric
based on hydrophytic vegetation and primary hydrology indicators.
Wetland B
Wetland B is a palustrine emergent wetland located on the adjacent property to the south of the Site. The area in
question was only observed from a distance, so a thorough assessment with an evaluation of soils was not able to
be completed. However, the feature clearly occurs within a valley between two (2) ridges and appeared linear in
nature. The outlet of this feature was unable to be observed because where an outlet might be located was
obscured by trees and the topography of the area. There was visible water at the time of the assessment and some
hydrophytic plants, including common rush (Juncus effusus), a common wetland plant that also occurs in disturbed
sites. The entirety of the feature would not be wetland as young bracken fern were also observed within the low
area. Given the normal rainfall conditions prior to the Site visit, though above normal immediately before the site
visit, and the presence of both hydrophytic vegetation and surface hydrology, the feature was assumed to be a
wetland. A final determination of wetland status cannot be established without direct access to evaluate the soils
within the feature in question.
Wetland D
Wetland D is an estimated palustrine scrub-shrub wetland located on the adjacent property to the north of the Site.
This feature occurs within a valley and was drained by Stream 2 (discussed below). Because this feature was unable
to be directly evaluated, the assessment was conservative and based on a combination of aerial imagery,
topography, and what could be visually assessed from Oak Bay Road. This assessment as a wetland is not
considered final as no on-site analysis was completed. This wetland was assumed to address the potential worst-
case scenario for the proposed Project within the Site.
Wetland D and Stream 2 drain through a culvert under Oak Bay Road north of the Site and continue east. Ponded
water was observed during the site visit, as well as hydrophytic plants such as salmonberry, field horsetail
(Equisetum arvense), and water parsley (Oenanthe sarmentosa). Given the normal rainfall conditions prior to the
Exhibit 49 Page 0640
EXISTING SITE CONDITIONS PAGE 9
Site visit, though above normal immediately before the site visit, and the presence of both hydrophytic vegetation
and surface hydrology, the feature was assumed to be a wetland. A final determination of wetland status cannot
be established without direct access to evaluate the soils within the feature in question.
Wetland E
Wetland E is a small palustrine scrub-shrub emergent wetland located near the east central portion of the property.
This wetland occurs on a slope within a drain that, while the drain does allow water to flow downhill to the east,
has not formed the characteristic bed and bank features of a stream. Hydrology is supported by precipitation.
Wetland E is mostly unvegetated except for a small area covered by salmonberry, swamp gooseberry (Ribes
lacustre), piggyback plant (Tolmiea menziesii), and lady fern (Athyrium cyclosorum). Soils did not meet a hydric soil
indicator, but were assumed based on hydrophytic vegetation and primary hydrology indicators. Soils were
sufficiently dark to indicate that wetland hydrology was likely present outside of the rainy season.
A small portion of the Wetland E buffer was disturbed through site survey activities, legally occurring consistent
with Jefferson County Code (JCC) 18.22.230.4.h Site Investigative Work, which is discussed in more detail in Section
4.3.2 below.
3.3.3 Streams
Two ephemeral streams (Stream 1 and 2) were identified within the Study Area (Figure 3).
Stream 1
Stream 1 originates within a clear valley that extends across the southeast corner of the Site. The valley feature
where it abuts the southern property line is not a stream. Stream characteristics do not form until about halfway
across the Site. Uphill of where the stream is noted as beginning on the map, the stream is not constrained by a
defined bed and bank that alternate between surface and subsurface flows. Stream 1 begins a defined bed and
bank at the outlet of a culvert under an old access road. The ordinary water mark varied from eight (8) to 24 inches
with a variable substrate of silt and sand to small cobbles. The gradient of Stream 1 was calculated at 12.8%. Stream
1 enters a culvert under Oak Bay Road and continues offsite to the east.
The riparian corridor of Stream 1 was dominated by native species such as salmonberry, ladyfern (Athyrium
cyclosorum), swordfern (Polystichum munitum), and piggyback plant (Tolmiea menziesii). The stream itself
alternated between an incised channel on the steeper slopes before entering a less incised channel where slopes
were gentler. Riparian vegetation was mostly present where the tree canopies were less dense and the stream
occurred over a gentler gradient. Soils were evaluated within the riparian vegetation to check for wetland
conditions. No wetland conditions were identified, and no hydric soil indicators present where soils were
evaluated. A test pit (Plot 4) reflects the conditions within the riparian vegetated area around Stream 1.
Stream 2
Stream 2 is located offsite to the north, and was estimated to have similar characteristics to Stream 1. Stream 2
was identified from the Oak Bay Road right-of-way, and was observed flowing into a culvert under Oak Bay Road.
The conditions of Stream 2 were not assessed on the adjacent property. The Site was evaluated within the same
topographic valley uphill of the approximate stream location to determine where stream features began. It was
determined that no defined bed and bank occurred within the Site in this topographic valley that would reflect
Exhibit 49 Page 0641
EXISTING SITE CONDITIONS PAGE 10
Stream 2 as starting on the Site. It was determined that Stream 2 starts as a stream somewhere on the adjacent
property. Mapping reflects the assumptions made around the Stream 2 location.
Vegetation near Oak Bay Road was similar around Stream 2 as around Stream 1 so the riparian corridors were
assumed to be similar in composition. Wetland D was assumed around Stream 2 out of an abundance of caution to
verify whether a wetland in this location might affect on-site development.
3.3.4 Native Vegetation and Habitat
The Pomona Woods Site is dominated by native forest in both the canopy and understory. A small pocket of English
holly (Ilex aquifolium) was observed onsite near the proposed limits of disturbance. Typical canopy species include
Douglas fir (Pseudotsuga menziesii), western red cedar (Thuja plicata), bigleaf maple (Acer macrophyllum), and red
alder (Alnus rubra). The understory is dominated by sword fern (Polystichum munitum) across the entire site with
lesser quantities of other common shrubs, vines and ferns.
For discussion purposes, we divided the Site into three (3) communities based on dominant species of the canopy,
including deciduous-dominant, conifer-dominant, and a deciduous-conifer mixed community (Figure 4). While
each community was evaluated through meandering pedestrian transects across the Site, the mapping was based
on an aerial interpretation based on the visible canopy on the map. The community boundaries were not field
delineated or surveyed. The below community boundaries are approximate.
A discussion of each community is provided below.
• Deciduous-Dominant Forest – The canopy in this area contains large amounts of red alder with few to no
conifers present. The understory in these areas is dominated by sword fern, salal (Gaultheria shallon),
salmonberry, stinging nettle (Urtica dioica), trailing blackberry (Rubus ursinus) and some bracken fern
(Pteridium aquilinum) starting to show. Other species occur but aren’t prevalent across the community type.
The canopy in this area is the most open of the community types. Large woody material is smaller in size and
lesser in quantity in this community type than the others.
• Conifer-Deciduous Mixed Forest – The canopy in these areas are a mix of conifers and deciduous species with
bigleaf maple as well as Douglas fir and Western redcedar as prominent components of the canopy. The
understory is still dominated by sword fern and salal, but also contains salmonberry, red huckleberry
(Vaccinium parviflorum), Western hazelnut (Corylus cornuta), and oso-berry (Oemleria cerasiformis). Large
woody material of a variety of sizes is a common part of this community.
• Conifer-Dominant Forest - Conifers are the only canopy tree present except for areas transitional to the other
community types. Deciduous species are more likely to be the understory shrub species such as oso-berry or
Western hazelnut. The understory in this community is mostly sword fern. There is a noticeable increase in
large snags and logs present within this community compared to the other community types.
All communities onsite are native-dominated communities that are functioning normally.
Exhibit 49 Page 0642
EXISTING SITE CONDITIONS PAGE 11
3.4 Wildlife
General observations on expected and observed wildlife usage is below.
Table 5. Summary of Listed Species and Potential for Occurrence
Common
Name
Scientific
Name
Federally
Listed State Listed
Priority
Habitat or
Species
Potential
Occurrence/
Use of Site1
BIRDS
Marbled
Murrelet
Barchyramphus
marmoratus X X None
Streaked
Horned Lark
Eremophila
alpestris
strigata
X X None
Yellow-billed
Cuckoo
Coccyzus
americanus X X None
FISH
Bull Trout Salvelinus
confluentus X None
INSECTS
Monarch
Butterfly
Danaus
plexippus Candidate X None
FLOWERING PLANTS
Golden
Paintbrush
Castilleja
levisecta X None
3.4.1 General Wildlife Usage
Connectivity of onsite habitat to offsite native habitat is excellent with large tracts of undeveloped land north and
west of the Site. The Site contains larger trees and snags that would support many forest-dwelling birds. Common
wildlife in this area are expected to use the Site, including small to medium mammals and forest-oriented birds, as
well as larger mammals that are likely to pass through this general area.
A variety of songbirds were heard onsite during field investigations, including a Pine Siskin and several different
warblers. Pileated woodpeckers were both seen and heard on the Site, and clearly use the Site for foraging at a
minimum. The Cornell University Merlin phone application was used to verify bird calls. None of the birds heard
have been identified as listed species that would require special protection.
Exhibit 49 Page 0643
EXISTING SITE CONDITIONS PAGE 12
3.4.2 Federally Listed Species
No federal listed species were directly or indirectly observed on the Site. No suitable habitat was identified on the
Site to support federally listed species for this region, such as Bull Trout, Marbled Murrelets, Streaked Horned Lark,
or Yellow-billed Cuckoo.
3.4.3 State Listed Species
No stream habitat occurs onsite or adjacent to the property which would provide habitat for listed salmonids.
Additionally, no suitable habitat was identified on the property to support other state listed species.
Priority habitat do occur onsite given the presence of the critical areas, including snags, logs, riparian, and instream
habitats.
3.4.4 Local Species
Common urban wildlife are expected to use the Site, though Jefferson County does not have its own list of local
species of importance.
Exhibit 49 Page 0644
REGULATORY REVIEW PAGE 13
4. Regulatory Review
The Site falls under the jurisdiction of Jefferson County, 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.
4.2 State Regulations
Wetlands on the Site are subject to applicable State regulations. However, County regulations retaining to wetlands
and streams 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 & Wildlife (WDFW)
WDFW regulates streams and impacts that have the potential to effect streams. The onsite stream would fall under
the jurisdiction of WDFW and any impacts proposed that might affect this stream or modify its bed and bank would
require a permit from WDFW.
At the time of this report, no impacts to or near streams are proposed that would require a permit from WDFW.
4.3 Local Regulations
The Site falls within Jefferson County limits and is subject to the regulations of JCC Chapter 18.22 – Critical Areas.
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 JCC Chapter 18.22 – Critical Areas and are outlined in
Table 6 below.
Exhibit 49 Page 0645
REGULATORY REVIEW PAGE 14
Table 6. Summary of Critical Areas and Buffers
Critical Area ID
Wetland
Category/Stream
Typing
High – Moderate - Low Impact/Standard
Buffer (feet)
(JCC 18.22)
Wetland A IV 50 – 40 – 25
Wetland B IV 50 – 40 – 25
Wetland D IV 50 – 40 – 25
Wetland E IV 50 -40 – 25
Drainage 1 Type Ns 50
Drainage 2 Type Ns 50
JCC Chapter 18.22.730.6 outlines the required buffer standards, including definition of low, moderate and high
intensity land uses (listed below, JCC 18.22.730.6.d.i). Buffers are assumed to be dense, multi-storied communities
of native species.
• “High intensity land use” means land use that includes the following uses or activities: commercial, urban,
industrial, institutional, retail sales, residential (more than one unit/acre), high intensity new agriculture
(dairies, nurseries, greenhouses, raising and harvesting crops requiring annual tilling, raising and maintaining
animals), high intensity recreation (golf courses, ball fields), hobby farms, and Class IV special forest practices,
including the building of logging roads. A high intensity land use may become a moderate intensity land use
where required measures to minimize impacts in Table 18.22.730(1)(b) are made part of the proposal and where
a buffer condition is well vegetated per subsection (9) of this section criteria.
• “Low intensity land use” means land use that includes the following uses or activities: forestry (cutting of trees
only), low intensity open space (such as passive recreation and natural resources preservation), utility corridor
without a maintenance road and little or no vegetation management and unpaved trails. Low intensity uses
incorporate features in Table 18.22.730(1)(b) by the nature of their use.
• “Moderate intensity land use” means land use that includes the following uses or activities: residential (one
unit/gross acre or less), moderate intensity open space (parks), moderate intensity new agriculture (such as
orchards and hay fields), utility corridor or right-of-way shared by several utilities and including
access/maintenance roads and paved trails.
Wetlands
All four (4) wetlands were rated using the Washington State Wetland Rating System for Western Washington, and
were classified as Category IV wetlands (Hruby 2014). Wetland ratings and figures are provided in Appendix F.
Category IV wetlands require a 50-foot buffer for high impact land uses, 40-foot buffer for moderate impact land
uses, and 25-foot buffer for low impact land uses.
Exhibit 49 Page 0646
REGULATORY REVIEW PAGE 15
Per JCC 18.22.730.9, Category IV wetland buffers may be reduced to 40-foot buffers with the implementation of
Table 18.22.730(1)(b), copied into Table 7 below, and implementation of reasonable measures to reduce adverse
impact of the Project to the parcel.
Table 7. Required Measures to Minimize Impacts to Wetlands (Table 18.22.730(1)(b))
Disturbance Required Measures to Minimize Impacts
Lights • Direct lights away from wetland
Noise
• Locate activity that generates noise away from wetland
• If warranted, enhance existing buffer with native vegetation plantings
adjacent to noise source
• For activities that generate relatively continuous, potentially disruptive
noise, such as certain heavy industry or mining, establish an additional 10
feet heavily vegetated buffer strip immediately adjacent to the outer
wetland buffer
Toxic runoff
• Route all new, untreated runoff away from wetland while ensuring wetland
is not dewatered
• Establish covenants limiting use of pesticides within 150 feet of wetland
• Apply integrated pest management
Stormwater runoff
• Retrofit stormwater detention and treatment for roads and existing
adjacent development
• Prevent channelized flow from lawns that directly enters the buffer
• Use low intensity development techniques (for more information refer to
the drainage ordinance and manual)
Change in water regime • Infiltrate or treat, detain, and disperse into buffer new runoff from
impervious surfaces and new lawns
Pets and human
disturbance
• Use privacy fencing or plant dense vegetation to delineate buffer edge and
to discourage disturbance using vegetation appropriate for the ecoregion
• Place wetland and its buffer in a separate tract or protect with a
conservation easement
Dust • Use best management practices to control dust
Wetland Buffers
In addition to the wetlands and their buffers, a small area of disturbance occurred during site surveys within the
Wetland E buffer where the understory was disturbed. Site investigative work is legally occurring consistent with
Jefferson County Code (JCC) 18.22.230.4.h Site Investigative Work under general exemptions to the critical areas
code. Due to the terrain, this path was used as the main entry point for walking onto the site, as well as for the entry
location for geotechnical survey equipment. The repetitive walking over the same area disturbed a small area of
understory vegetation. No heavy machinery entered the Site.
18.22.230.4(h) Site Investigative Work. Site investigative work in wetlands, landslide hazard areas, riverine
and coastal erosion hazard areas, or fish and wildlife habitat conservation areas, or their critical area buffers
Exhibit 49 Page 0647
REGULATORY REVIEW PAGE 16
that is necessary for land use application submittals or permit compliance, including but not limited to
groundwater monitoring wells, sediment sampling, surveys, soil borings, shallow soil test pits, and
percolation tests involving no fill or use of heavy equipment; provided, the site investigative work complies
with the additional requirements in subsection (5) of this section and excavation for soil logs or percolation
tests are filled.
Streams
Ephemeral non-fish-bearing streams with less than a 20% gradient, like Streams 1 and 2, require a 50-foot standard
buffer.
4.3.3 Flood Hazard Area
No 100-year floodplains are mapped on or adjacent to the Site.
Exhibit 49 Page 0648
PROPOSED PROJECT PAGE 17
5. Proposed Project
5.1 Proposed Project
The Project proposes to construct a small-scale recreational retreat with associated infrastructure, parking areas,
an access road, and an onsite manager’s residence (Figure 5). The structures will be built in the western half of the
Site where the Site levels out and is dominated by more deciduous than coniferous trees.
An access road will meander across the Site from Oak Bay Road to connect the new facility to the county road
(Appendix G). The access road has been sited to avoid impacts to critical areas, while also accommodating the
topography of the Site to minimize regrading necessary to construct a road that meets County standards.
5.2 Stormwater Management
Stormwater for the Site will be managed through the design and construction of a new stormwater facility to
manage all site runoff sufficient to meet current stormwater management guidelines. Stormwater facilities are not
proposed within critical areas.
Exhibit 49 Page 0649
CRITICAL AREAS IMPACTS PAGE 18
6. Critical Areas Impacts
6.1 Assessment of Development Impacts
No direct, permanent impacts to any wetlands, streams, or buffers will result from this Project (Figure 5).
6.1.1 Wetland Impacts
No direct impacts to wetlands or wetland buffers are proposed.
6.1.2 Wetland Buffer Impacts
The project will not disturb wetland buffer. However, a small area of the Wetland E buffer understory was previously
disturbed through site investigative activities as part of the required site access to evaluate the property, consistent
with the general exemption as outlined in JCC 18.22.230.4.h. Though the action was consistent with the JCC, to
ensure no net loss of habitat, this area of legal disturbance will be voluntarily restored through a one-time planting
of native, understory species, such as sword fern. No long-term performance monitoring is proposed as this is a
voluntary buffer restoration of legally occurring actions that did not require a permit.
6.1.3 Stream Impacts
No direct impacts to streams or stream buffers are proposed.
6.1.4 Habitat Impacts
For discussion purposes, the Site was divided into three (3) aerially delineated communities based on dominant
species of the canopy: deciduous-dominant, conifer-dominant, and a deciduous-conifer mixed community (Figure
4). The Project proposes 4.42 acres of temporary and permanent impacts to the native forest onsite to
accommodate the project footprint. The remainder of the Site, roughly 80% of the total Site area, will remain in its
existing condition.
Table 8. Summary of Habitat Impacts
Forest Community
Types
Total Size
(acres)
Total Impacted
Area (acres)
Total Retained
Area (acres)
Total Retained
Area (%) by
Community
Coniferous
Dominant 4.76 1.01 3.75 79%
Conifer/Deciduous
Mix 12.52 2.24 10.28 82%
Deciduous
Dominant 4.34 1.17 33.17 73%
Total 21.62
(100%)
4.42
20.4%
17.2
79.6%
Exhibit 49 Page 0650
CRITICAL AREAS IMPACTS PAGE 19
6.1.5 Listed Species Impacts
No state or federally listed species or their habitats were identified onsite, therefore, the Project will have no effect
on listed species.
Exhibit 49 Page 0651
SUMMARY PAGE 20
7. Summary
The Pomona Woods project is comprised of two parcels (921183008 and 921183002) totalling approximately 21.6
acres in Jefferson County, Washington. The undeveloped Site is dominated by native forest over a sloping
landscape with elevations ranging between approximately elevation 360 feet in the west down to 150 feet above
sea level at the east end of the Site.
Four (4) wetlands and two (2) streams were identified on or adjacent to the property. Wetlands were all rated as
Category IV wetlands and require a 50-foot buffer for high impact land uses, 40-foot buffer for moderate impact
land uses, and 25-foot buffer for low impact land uses. Streams 1 and 2 are ephemeral with less than a 20% gradient
and require a 50-foot standard buffer.
The Project proposes no impacts to any critical areas. Standard buffers will be maintained around all critical areas
onsite. The proposed project will retain approximately 80% of the native forest onsite.
Voluntary restoration of a small area of understory within the outer limits of the Wetland E buffer will be completed
to offset legal buffer impacts from site investigative work. This voluntary restoration will entail a one-time planting
of sword ferns.
Exhibit 49 Page 0652
REFERENCES PAGE 21
8. 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. Jefferson County Code (JCC) Chapter 18.22 Critical Areas.
6. Lichvar, R. (2012). The National Wetland Plant List. Hanover, NH: U.S. Army Corps of Engineers, Cold Regions
Research and Engineering Laboratory. Retrieved from
http://acwc.sdp.sirsi.net/client/search/asset:asset?t:ac=$N/1012381
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.
Exhibit 49 Page 0653
APPENDIX A
APPENDIX A
Jennifer Marriott, PWS – Resume
Kristen Numata, PWS - Resume
Exhibit 49 Page 0654
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
Exhibit 49 Page 0655
Kristen Numata, PWS
8201 164th Avenue Northeast, Suite 200, PMB 141, Redmond, WA 98052
kristen@wet.land
Work: 206-309-8100 | Cell: 206-930-4845
QUALIFICATIONS
Wetland Science and Management Certificate, University of Washington Professional Continuing
Education, Seattle, WA, 2016
Bachelor of Science, Biology, Santa Clara University, Santa Clara, CA, 2014
Bachelor of Science, Environmental Science, Santa Clara University, Santa Clara, CA, 2014
Professional Wetland Scientist (No. 3412)
Certified Erosion and Sediment Control Lead (No. 70592)
FOCUS AND EXPERTISE
Critical Areas Delineations and Site Assessments
Wetland Functional Assessment
Geographic Information Systems
Critical Area Permitting
Mitigation Planning and Performance Monitoring
Environmental Compliance and Construction Oversight
EXPERIENCE
Ecologist/Owner; Wet.land, LLC; January 2022 – Present
Project Biologist; PBS Engineering and Environmental, Inc.; July 2019 – December 2021
Biologist/Environmental Scientist; David Evans and Associates, Inc.; July 2018 – July 2019
Ecologist; Talasaea Consultants, Inc.; July 2015 – July 2018
SKILLS, TRAINING & PROFESSIONAL MEMBERSHIPS
Washington (Coastal Training Program Workshops)
o Revised Washington State Wetland Rating System, 2014 (March 2016)
o Using the Credit-Debit Method for Estimating Mitigation Needs (April 2017)
o How to Determine Ordinary High Water Mark (June 2017)
o Grass, Sedge, and Rush Identification for Western WA Puget Lowland Habitats (February
2018)
o Winter Tree and Shrub Identification for Western WA Puget Lowland Habitats (February
2019)
o Navigating SEPA (March 2019)
Other Technical Training
o Junior Author, Washington State Department of Transportation (WSDOT) Biological
Assessment Preparation for Transportation Projects Training (March 2020)
o Fish Passage: Inventory and Assessment, Washington Department of Fish and Wildlife,
(WDFW) (August 2020)
o Fish Passage: Habitat Survey, WDFW (August 2020)
Exhibit 49 Page 0656
APPENDIX B
APPENDIX B
Figures
1. Vicinity Map
2. Web Soil Survey Map
3. Existing Conditions Map
4. Habitat Types
Exhibit 49 Page 0657
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI TOPOGRAPHY AND HILLSHADE
FIGURE 1
#0084
JULY 2022
0 2,0001,000
Feet
VICINITY MAP
Study Area (300')
Parcels 921183008 & 921183002
Pomona Woods
Exhibit 49 Page 0658
Mu
SnD
SnD
AmDCfDSnC
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI TOPOGRAPHY AND HILLSHADE, WEB SOIL SURVEY
FIGURE 2
#0084
JULY 2022
0 280140
Feet
WEB SOIL SURVEY MAP
SOIL MAP UNITS WITHIN STUDY AREA
AmD – Alderwood gravelly loam, 15 – 30% slopes
CfD – Cassolary sandy loam, 15 – 30% slopes
SnC – Sinclair gravelly sandy loam, 0 – 15% slopes
SnD – Sinclair gravelly sandy loam, 15 – 30% slopes
None are considered hydric soils.OAK BAY ROADStudy Area (300')
Exhibit 49 Page 0659
3601
3
0
360
360
3
3
0360360
3
6
0 1303601403103
4
0 300320290
330150200210
2802
5
0
230220350270240260 160170180190
8201 164th Avenue Northeast, Suite 200, PMB 141
Redmond, Washington
(206) 309 - 8100
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI TOPOGRAPHY AND HILLSHADE, NOAA LIDAR
FIGURE 3
#0084
JULY 2022 ±1 in = 100 ft (Graphic Scale)
0 10050
Feet
EXISTING CONDITIONS MAP
Pomona Woods
Gravel Access Road
Stream
Stream Buffer
Culverts (Surveyed)
Culverts (Estimated)
10-ft Contours
1-ft Contours
Wetlands
Off-site
On-site
Plot
High Impact Buffer
Moderate Impact
Buffer
Low Impact Buffer
LEGEND OAK BAY ROADStream 1
Stream 2
Wetland A
Plots 1 & 2
Wetland B, off-site
Wetland D, off-site
Wetland E
Plots 8 & 9
Plot 3
Plot 4
Plot 5
Plot 6
Plot 7
Critical Area ID Wetland
Category
High-Moderate-Low Intensity
Buffer (feet) (JCC 18.22)
Wetland A IV 50 - 40 - 25
Wetland B IV 50 - 40 - 25
Wetland D IV 50 - 40 - 25
Wetland E IV 50 - 40 - 25
Critical Area ID Stream Type
Standard Buffer
(feet) (JCC 18.22)
Stream 1 Type Ns 50
Stream 2 Type Ns 50
Exhibit 49 Page 0660
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI AERIAL IMAGERY
FIGURE 4
#0084
JULY 2022
0 200100
Feet
HABITAT TYPES
LEGEND
Pomona Woods
Limits of Land Disturbance
Habitat Types
Coniferous Dominant
Coniferous/Deciduous Mix
Deciduous Dominant OAK BAY ROADTotal Size (Acre)Total Impacted Area
(Acres)
Total Retained Area
(Acres)
Coniferous Dominant 4.76 1.01 3.75
Coniferous/Deciduous Dominant 12.52 2.24 10.28
Deciduous Dominant 4.34 1.17 3.17
21.62 4.42 17.2
100.0%20.4%79.6%TOTAL
Exhibit 49 Page 0661
1303603
60
360
330360 3303
6
0 130360130360140
310340 32030029
0
3
3
0 200150210
2802
5
0
220230350270240260
160
1701801908201 164th Avenue Northeast, Suite 200, PMB 141
Redmond, Washington
(206) 309 - 8100
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI TOPOGRAPHY AND HILLSHADE, NOAA LIDAR
FIGURE 5
#0084
JULY 2022 ±1 in = 130 ft (Graphic Scale)
0 13065
Feet
IMPACTS AND MITIGATION MAP
Pomona Woods
Proposed Project
Proposed Contours
Gravel Access Road
Stream
Stream Buffer
Culverts (Surveyed)
Culverts (Estimated)
10-ft Contours
1-ft Contours
Wetlands
Off-site
On-site
High Impact Buffer
Moderate Impact
Buffer
Low Impact Buffer
Limits of Land
Disturbance
Upland Restoration
( 1,978 sf)
Buffer Restoration
(374 sf)
LEGEND
OAK BAY ROADStream 1
Stream 2
Wetland A Wetland B, off-site
Wetland D, off-site
Wetland E
See Landscape Plan
Critical Area ID Wetland
Category
High-Moderate-Low Intensity
Buffer (feet) (JCC 18.22)
Wetland A IV 50 - 40 - 25
Wetland B IV 50 - 40 - 25
Wetland D IV 50 - 40 - 25
Wetland E IV 50 - 40 - 25
Critical Area ID Stream Type
Standard Buffer
(feet) (JCC 18.22)
Stream 1 Type Ns 50
Stream 2 Type Ns 50
CRITICAL AREA BUFFERS
NOTE: Area of buffer restoration is approximated.
Scientific Name Common Name WIS Quantity Spacing Size (Min) Notes
Polystichum munitum Sword fern FACU 33 4' O.C. 1 gal Full & bushy
BUFFER RESTORATION PLANT SCHEDULE
190
150
160170
180
See Inset Map
±
0 6030
Feet
Exhibit 49 Page 0662
8201 164th Avenue Northeast, Suite 200, PMB 141
Redmond, Washington
(206) 309 - 8100
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington FIGURE 6
#0084
JULY 2022
BUFFER PLANTING SPECS
Exhibit 49 Page 0663
8201 164th Avenue Northeast, Suite 200, PMB 141
Redmond, Washington
(206) 309 - 8100
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington FIGURE 7
#0084
JULY 2022
BUFFER PLANTING SPECS
Exhibit 49 Page 0664
APPENDIX C
APPENDIX C
Agency Database Results
Exhibit 49 Page 0665
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=97a5ae98d8d04458860f64e201
d155c4
Watershed Boundaries ECY
https://www.arcgis.com/home/webmap/viewer.html
?url=https%3A%2F%2Fhydro.nationalmap.gov%2Far
cgis%2Frest%2Fservices%2Fwbd%2FMapServer&sour
ce=sd
Websoils NRCS https://websoilsurvey.sc.egov.usda.gov/App/WebSoil
Survey.aspx
National Wetlands
Inventory USFWS https://www.fws.gov/wetlands/data/Mapper.html
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/
SalmonScape WDFW https://apps.wdfw.wa.gov/salmonscape/map.html
Washington State Fish
Passage WDFW https://geodataservices.wdfw.wa.gov/hp/fishpassage
/index.html
StreamNet Mapper The Pacific States Marine
Fisheries Mapper
https://psmfc.maps.arcgis.com/apps/webappviewer/i
ndex.html?id=3be91b0a32a9488a901c3885bbfc2b0b
Public Land Records Jefferson County https://gisweb.jeffcowa.us/LandRecords/
Exhibit 49 Page 0666
4/14/22, 3:29 PM PHS Report
1/2
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.
Priority Habitats and Species on the Web
Buffer radius: 300 Feet
Report Date: 04/14/2022, Parcel ID: 921183008
The Priority Habitats and Species (PHS) datasets do not contain information for your project area. This does not mean that species
and habitats do not occur in your project area. PHS data, points, lines and polygons are mapped only when occurrences of these
species or habitats have been observed in the field. Unfortunately, we have not been able to comprehensively survey all sections in
the state and therefore, it is important to note that priority species and habitats may occur in areas not currently known to the
Department.
Exhibit 49 Page 0667
4/14/22, 3:29 PM PHS Report
2/2Exhibit 49 Page 0668
Exhibit 49 Page 0669
Exhibit 49 Page 0670
Exhibit 49 Page 0671
Exhibit 49 Page 0672
Exhibit 49 Page 0673
Exhibit 49 Page 0674
Exhibit 49 Page 0675
Exhibit 49 Page 0676
Exhibit 49 Page 0677
Exhibit 49 Page 0678
Exhibit 49 Page 0679
Exhibit 49 Page 0680
Exhibit 49 Page 0681
Exhibit 49 Page 0682
National Flood Hazard Layer FIRMette
0 500 1,000 1,500 2,000250
Feet
Ü
SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
SPECIAL FLOODHAZARD AREAS
Without Base Flood Elevation (BFE)Zone A, V, A99With BFE or DepthZone AE, AO, AH, VE, AR
Regulatory Floodway
0.2% Annual Chance Flood Hazard, Areasof 1% annual chance flood with averagedepth less than one foot or with drainageareas of less than one square mileZone X
Future Conditions 1% Annual
Chance Flood HazardZone X
Area with Reduced Flood Risk due to
Levee. See Notes.Zone X
Area with Flood Risk due to LeveeZone D
NO SCREENArea of Minimal Flood Hazard Zone X
Area of Undetermined Flood HazardZone D
Channel, Culvert, or Storm Sewer
Levee, Dike, or Floodwall
Cross Sections with 1% Annual Chance
17.5 Water Surface Elevation
Coastal Transect
Coastal Transect Baseline
Profile Baseline
Hydrographic Feature
Base Flood Elevation Line (BFE)
Effective LOMRs
Limit of Study
Jurisdiction Boundary
Digital Data Available
No Digital Data Available
Unmapped
This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.The basemap shown complies with FEMA's basemapaccuracy standards
The flood hazard information is derived directly from theauthoritative NFHL web services provided by FEMA. This mapwas exported on 4/27/2022 at 6:02 PM and does notreflect changes or amendments subsequent to this date andtime. The NFHL and effective information may change orbecome superseded by new data over time.
This map image is void if the one or more of the following map
elements do not appear: basemap imagery, flood zone labels,
legend, scale bar, map creation date, community identifiers,
FIRM panel number, and FIRM effective date. Map images for
unmapped and unmodernized areas cannot be used for
regulatory purposes.
Legend
OTHER AREAS OF
FLOOD HAZARD
OTHER AREAS
GENERAL
STRUCTURES
OTHER
FEATURES
MAP PANELS
8
B 20.2
The pin displayed on the map is an approximatepoint selected by the user and does not representan authoritative property location.
1:6,000
122°43'52"W 48°0'13"N
122°43'14"W 47°59'49"N
Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020
Exhibit 49 Page 0683
APPENDIX D
APPENDIX D
Photodocument
Exhibit 49 Page 0684
#0084 14 June 2022 PHOTODOCUMENT
Conifer-Deciduous Mixed Forest—Typical
Deciduous-dominant Forest—Typical—Approximate
area of parking lot in southwest quadrant of Site
Deciduous-dominant forest—Typical Photo—showing
approximate area of Manager’s Residence
Conifer-Deciduous Mixed Forest—Typical
Exhibit 49 Page 0685
#0084 14 June 2022 PHOTODOCUMENT
Coniferous-dominant Forest—Typical—showing snag
used by woodpeckers
Potential Offsite Wetland (WL-B)—Photo facing south
from parcel boundary.
Potential Offsite Wetland (WL-B)—Photo facing south
from parcel boundary—showing pipe that has been
placed within this feature.
Coniferous-dominant Forest—Typical
Exhibit 49 Page 0686
#0084 14 June 2022 PHOTODOCUMENT
Wetland A in SW corner of Site.
Stream 2/Wetland D riparian complex (offsite) from
Oak Bay Road
Wetland E (blue/white flags are wetland boundary,
pink flagging was used by survey and are not reflective
of critical areas)
Stream 1—typical section showing narrow channel
width
Exhibit 49 Page 0687
APPENDIX E
APPENDIX E
Datasheets
Exhibit 49 Page 0688
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 1
JM/KN S 18 T 29N R 1E
Hillslope Concave 1-2
A 47.9985430 -122.7296715 NAD83
Sinclair gravelly loam, 0 - 15%PSS/EM
✔
✔
✔
✔
✔
Paired with Plot 2 for Wetland A.
Atypical hydrologic conditions present - see hydro notes.
✔
30'
None
0
15'
Rubus spectabilis 15 Y FAC
15
5'
Carex obnupta 100 Y OBL
1005'
None
0
0
2
2
100%
0
0
0
0
0
00
✔
✔
Exhibit 49 Page 0689
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
1
✔
Soils under water and lost structure when dug up, but were dark and super saturated. Soils assumed to be hydric based on obligate
sedge species present.
✔
✔
✔
✔4
✔0
✔✔0
Water ponded on surface, soils saturated to unknown depth.
Total of 2.94" of rain recorded April 1 - 24, which is above normal rainfall. Normal conditions are present (30-day rolling average),
but atypical hydrologic conditions.
Exhibit 49 Page 0690
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 2
JM/KN S 18 T 29N R 1E
Hillslope None 5
A 47.9985485 -122.7295827 NAD83
Sinclair gravelly loam, 0 - 15%Upland
✔
✔
✔
Paired with Plot 1 for Wetland A. Plot located east of wetland, between 2 - 3 feet higher than wetland edge.
Atypical hydrologic conditions present - see hydro notes.
✔
✔✔
30'
Thuja plicata 25 Y FAC
Alnus rubra 15 Y FAC
Pseudotsuga menziesii 10 Y FACU
50
15'
Gaultheria shallon 15 Y FACU
Vaccinium parvifolium 10 Y FACU
Ribes lacustre 1 N FAC
26
5'
Polystichum munitum 40 Y FACU
Rosa gymnocarpa 5 N FACU
Pteridium aquilinum 5NFACU
Urtica dioica 2 N FAC
Rubus ursinus 1 NFACU
535'
None
0
47
2
6
33%
0
0
0
0
0
00
✔
Exhibit 49 Page 0691
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
0-3
3-12+
10YR 3/2
10YR 4/2
100
100
SL
SL Some inclusions, but no mottles
No redox, soil dry and friable
✔
✔
✔
✔✔
Total of 2.94" of rain recorded April 1 - 24, which is above normal rainfall. Normal conditions are present (30-day rolling average),
but atypical hydrologic conditions present.
Exhibit 49 Page 0692
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 3
JM/KN S 18 T 29N R 1E
Hillslope Concave 5
A 47.9988734 -122.7264541 NAD83
Cassolary sand loam, 15 - 30% slopes Upland
✔
✔
✔
✔
Unpaired plot located within an isolated depression in the uplands adjacent to an old trail. Atypical hydrologic conditions
present - see hydro notes.
✔
✔
30'
None
0
15'
None
0
5'
Polystichum munitum 80 Y FACU
805'
None
0
20
0%
0
0
0
0
0
00
✔
Trees located within 30', but are located outside of the depression.
Exhibit 49 Page 0693
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
3
0-8
8-14
14-18
10YR 4/2
10YR 4/2
10YR 4/3
100
100
100
L
SL
SL
10YR 4/3 inclusions from C horiz.
✔
No redox features present. No hydric soil indicators met.
✔
✔
✔
✔✔0
Surface saturation observed with low flow. No stream channel present.
Total of 2.94" of rain recorded April 1 - 24, which is above normal rainfall. Normal conditions are present (30-day rolling average),
but atypical hydrologic conditions present.
Exhibit 49 Page 0694
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 4
JM/KN S 18 T 29N R 1E
Hillslope None 3-5
A 47.9989933 -122.7250624 NAD83
Cassolary sand loam, 15 - 30% slopes Upland
✔
✔
✔
Unpaired plot upslope of Stream 1 w/in riparian corridor. Riparian area evaluated for wetland conditions. None were
found. Atypical hydrologic conditions present - see hydro notes.
✔
✔✔
30'
None
0
15'
Rubus spectabilis 60 Y FAC
60
5'
Tolmiea menziesii 40 Y FAC
Athyrium cyclosorum 20 Y FAC
Polystichum munitum 10 N FACU
705'
None
0
30
3
3
100%
0
0
0
0
0
00
✔
✔
Exhibit 49 Page 0695
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
4
0-7
7-11
11-14+
10YR 4/2
10YR 4/3
10YR 4/2
100
100
98 10YR 4/6 2 C M
SL
SL
SL
✔
Redox occurred below 10" with a chroma of 3 above - does not meet a hydric soil indicator.
Stream not substantial enough to warrant floodplain/flooding exception to hydric soil indicator guidelines.
✔
✔13
✔✔
Soils moist, but not saturated. Total of 2.94" of rain recorded April 1 - 24, which is above normal rainfall. Normal conditions are
present (30-day rolling average), but atypical hydrologic conditions.
Exhibit 49 Page 0696
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 5
JM/KN S 18 T 29N R 1E
Hillslope Concave 0
A 47.9991827 -122.7274262 NAD83
Cassolary sand loam, 15 - 30% slopes Upland
✔
✔
✔
✔
Unpaired upland plot in a depression. Hydrophytic veg and hydro present, no hydric soils. Total of 2.94" of rain recorded
April 1-24, which is above normal. Normal conditions present (30-day rolling avg), but atypical hydro conditions present.
✔
✔
30'
None
0
15'
Rubus spectabilis 30 Y FAC
30
5'
Unidentifiable grass 15 Y FAC
155'
None
0
2
2
100%
0
0
0
0
0
00
✔
✔
Grass lacked distinguishing features to identify to species. Assumed FAC for the dominance test.
Exhibit 49 Page 0697
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
5
0-6
6-15+
10YR 3/2
10YR 5/3
100
100
L
SL
✔
✔
✔
✔
✔0
✔✔0
Soils saturated to soil surface, likely result of above normal rainfall immediately prior to site visit.
Exhibit 49 Page 0698
Exhibit 49 Page 0699
Exhibit 49 Page 0700
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 7
JM/KN S 18 T 29N R 1E
Hillslope None 2
A 47.9994323 -122.7247872 NAD83
Cassolary sand loam, 15 - 30% slopes Upland
✔
✔
✔
✔
Unpaired upland plot-Slope w/ 1ary hydrology indicators & sparse vegetation. Total of 2.94" of rain recorded April 1 - 24,
which is above normal rainfall. Normal conditions are present (30-day rolling average), but atypical hydrologic conditions.
✔
✔
30'
None
0
15'
None
0
5'
Polystichum munitum 70 Y FACU
Athyrium cyclosorum 2 N FAC
725'
None
0
18
1
2
50%
0
0
0
0
0
00
✔
Exhibit 49 Page 0701
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
7
0-4
4-14
14+
10YR 2/2
10YR 2/1
10YR 3/1
100
100
100
SL
SL
GSL
✔
No hydric soil indicator clearly met. Hydric soils assumed due to shallow chroma 2 horizon and chroma 1 extending below 12"
despite no redox features present. Presence of sword fern in vegetation layer supports lack of wetland conditions at this location.
✔
✔
✔8
✔✔
A total of 2.94 inches of rain was recorded April 1 - 24, which is above normal rainfall.
Exhibit 49 Page 0702
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 8
JM/KN S 18 T 29N R 1E
Hillslope None 5-10
A 47.9994354 -122.7246615 NAD83
Cassolary sand loam, 15 - 30% slopes PSS/EM
✔
✔
✔
✔
Paired with Plot 9 within Wetland E.
Atypical hydrologic conditions present - see hydro notes below.
✔
✔
30'
None
0
15'
Rubus spectabilis 10 Y FAC
10
5'
Tolmiea menziesii 5 Y FAC
Athyrium cyclosorum 5 Y FAC
Equisetum arvense 3 Y FAC
135'
None
0
4
4
100%
0
0
0
0
0
00
✔
✔
Exhibit 49 Page 0703
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
8
0-12
12-30+
10YR 2/2
10YR 3/1
100
100
SCL
SCL
No redox
No redox
✔
No hydric soil indicator clearly met. Hydric soils assumed based on other parameters. No redox features identified within profile.
However, depth of dark soils compared to nearby areas of contrast supports that this area stays wet for a long period of time.
✔
✔
✔
✔8
✔✔4
Total of 2.94" of rain recorded April 1 - 24, which is above normal rainfall. Normal conditions are present (30-day rolling average),
but atypical hydrologic conditions present.
Exhibit 49 Page 0704
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size:)
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is 3.01
4 - Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No
Remarks:
Pomona Woods Jefferson County 04/25/2022
Pomona Woods, LLC WA 9
JM/KN S 18 T 29N R 1E
Hillslope None 10+
A 47.9994372 -122.7246665 NAD83
Cassolary sand loam, 15 - 30% slopes Upland
✔
✔
✔
Paired with Plot 8.
Atypical hydrologic conditions present - see hydro notes.
✔
✔✔
30'
Acer macrophyllum 40 Y FACU
Thuja plicata 20 Y FAC
60
15'
Rubus spectabilis 5 Y FAC
5
5'
Polystichum munitum 30 Y FACU
305'
None
0
2
4
50%
0
0
0
0
0
00
✔
Exhibit 49 Page 0705
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
9
0-13
13-15+
10YR 3/2
10YR 5/3
100
94 10YR 4/4
10YR 3/6
5
1
C
C
M
M
SL
SCL
SCL
✔
✔
✔
✔✔
Total of 2.94" of rain recorded April 1 - 24, which is above normal rainfall. Normal conditions are present (30-day rolling average),
but atypical hydrologic conditions present.
Exhibit 49 Page 0706
APPENDIX F
APPENDIX F
Wetland Ratings and Figures
Exhibit 49 Page 0707
Wetland name or number
Name of wetland (or ID #):Date of site visit: 4/25/2022
Rated by Trained by Ecology? Yes No Date of training 3/30/2016
HGM Class used for rating Wetland has multiple HGM classes? Yes No
NOTE: Form is not complete with out the figures requested (figures can be combined ).
Source of base aerial photo/map
OVERALL WETLAND CATEGORY IV (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
Category II - Total score = 20 - 22 function based
Category III - Total score = 16 - 19 on three
X Category IV - Total score = 9 - 15 ratings
(order of ratings
is not
important )
L L 9 = H, H, H
L H 8 = H, H, M
LMTotal 7 = H, H, L
7 = H, M, M
6 = H, M, L
6 = M, M, M
5 = H, L, L
5 = M, M, L
4 = M, L, L
3 = L, L, L
2. Category based on SPECIAL CHARACTERISTICS of wetland
X
Interdunal
None of the above
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Coastal Lagoon
Score Based on
Ratings 43613
CHARACTERISTIC Category
List appropriate rating (H, M, L)
Site Potential M
Landscape Potential L
Value L
RATING SUMMARY – Western Washington
Wetland A
JMM/KN
Slope
ESRI aerial imagery
FUNCTION Improving
Water Quality
Hydrologic Habitat
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0708
Wetland name or number
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Location of outlet (can be added to map of hydroperiods )
Boundary of area within 150 ft of the wetland (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Riverine Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Ponded depressions
Boundary of area within 150 ft of the wetland (can be added to another figure )
Plant cover of trees, shrubs, and herbaceous plants
Width of unit vs. width of stream (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of: Figure #
Cowardin plant classes
Plant cover of trees, shrubs, and herbaceous plants
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Plant cover of dense trees, shrubs, and herbaceous plants
Plant cover of dense, rigid trees, shrubs, and herbaceous plants
(can be added to another figure )
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
S 2.1, S 5.1
H 2.1, H 2.2, H 2.3
S 3.1, S 3.2
S 3.3
H 1.1, H 1.4
H 1.2
S 1.3
S 4.1
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2
L 3.3
To answer questions:
R 3.1
R 3.2, R 3.3
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
L 1.2
L 2.2
R 1.2, R 4.2
R 4.1
R 2.2, R 2.3, R 5.2
H 2.1, H 2.2, H 2.3
D 3.3
To answer questions:
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
D 2.2, D 5.2
D 4.3, D 5.3
H 2.1, H 2.2, H 2.3
D 3.1, D 3.2
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
D 1.1, D 4.1
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0709
Wetland name or number
For questions 1 -7, the criteria described must apply to the entire unit being rated.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO - go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine)YES - Freshwater Tidal Fringe
NO - go to 3 YES - The wetland class is Flats
If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
NO - go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?
The wetland is on a slope (slope can be very gradual ),
The water leaves the wetland without being impounded.
NO - go to 5 YES - The wetland class is Slope
5. Does the entire wetland unit meet all of the following criteria?
The overbank flooding occurs at least once every 2 years.
NO - go to 6 YES - The wetland class is Riverine
NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding.
The water flows through the wetland in one direction (unidirectional) and usually comes from seeps.
It may flow subsurface, as sheetflow, or in a swale without distinct banks.
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow
depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep).
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding
from that stream or river,
HGM Classification of Wetland in Western Washington
If hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit
with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to
Question 8.
If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.
If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be
used to score functions for estuarine wetlands.
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it.
Groundwater and surface water runoff are NOT sources of water to the unit.
The vegetated part of the wetland is on the shores of a body of permanent open water (without any
plants on the surface at any time of the year) at least 20 ac (8 ha) in size;
At least 30% of the open water area is deeper than 6.6 ft (2 m).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0710
Wetland name or number
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
Salt Water Tidal Fringe and any other Treat as
class of freshwater wetland ESTUARINE
If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than
2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating.
within boundary of depression
Depressional + Lake Fringe Depressional
Riverine + Lake Fringe Riverine
Slope + Depressional Depressional
Slope + Lake Fringe Lake Fringe
Depressional + Riverine along stream Depressional
NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of
the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10%
of the unit; classify the wetland using the class that represents more than 90% of the total area.
HGM classes within the wetland unit HGM class to
being rated use in rating
Slope + Riverine Riverine
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at
some time during the year? This means that any outlet, if present, is higher than the interior of the wetland.
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding?
The unit does not pond surface water more than a few inches. The unit seems to be maintained by high
groundwater in the area. The wetland may be ditched, but has no obvious natural outlet.
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For
example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a
Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE
HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT
(make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for
the rating system if you have several HGM classes present within the wetland unit being scored.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0711
Wetland name or number
Slope is 1% or less points = 3
Slope is > 1% - 2%points = 2
Slope is > 2% - 5%points = 1
Slope is greater than 5%points = 0
Yes = 3 No = 0
Dense, uncut, herbaceous plants > 90% of the wetland area points = 6
Dense, uncut, herbaceous plants > ½ of area points = 3
Dense, woody, plants > ½ of area points = 2
Dense, uncut, herbaceous plants > ¼ of area points = 1
Does not meet any of the criteria above for plants points = 0
Total for S 1 Add the points in the boxes above 8
Rating of Site Potential If score is: 12 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
Yes = 1 No = 0
Other Sources Yes = 1 No = 0
Total for S 2 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 1 - 2 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 2 No = 0
Total for S 3 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
S 3.0. Is the water quality improvement provided by the site valuable to society?
S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river,
lake, or marine water that is on the 303(d) list?0
S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue?
At least one aquatic resource in the basin is on the 303(d) list.0
S 3.3. Has the site been identified in a watershed or local plan as important
for maintaining water quality? Answer YES if there is a TMDL for the basin in
which the unit is found ?
0
S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants:
Choose the points appropriate for the description that best fits the plants in the wetland. Dense
means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or
mowed and plants are higher than 6 in.
6
S 2.0. Does the landscape have the potential to support the water quality function of the site?
S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in
land uses that generate pollutants?0
S 2.2. Are there other sources of pollutants coming into the wetland that are
not listed in question S 2.1?0
Water Quality Functions - Indicators that the site functions to improve water quality
S 1.0. Does the site have the potential to improve water quality?
S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in
elevation for every 100 ft of horizontal distance)
2
S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic
(use NRCS definitions ):0
SLOPE WETLANDS
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0712
Wetland name or number
Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1
All other conditions points = 0
Rating of Site Potential If score is: 1 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Rating of Landscape Potential If score is: 1 = M 0 = L Record the rating on the first page
S 6.1. Distance to the nearest areas downstream that have flooding problems:
points = 2
Surface flooding problems are in a sub-basin farther down-gradient points = 1
No flooding problems anywhere downstream points = 0
Yes = 2 No = 0
Total for S 6 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
NOTES and FIELD OBSERVATIONS:
S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land
uses or cover that generate excess surface runoff?0
S 6.0. Are the hydrologic functions provided by the site valuable to society?
0
The sub-basin immediately down-gradient of site has flooding
problems that result in damage to human or natural resources (e.g.,
houses or salmon redds)
S 6.2. Has the site been identified as important for flood storage or flood
conveyance in a regional flood control plan?0
SLOPE WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosion
S 4.0. Does the site have the potential to reduce flooding and stream erosion?S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose
the points appropriate for the description that best fits conditions in the wetland. Stems of plants
should be thick enough (usually > 1 /8 in), or dense enough, to remain erect during surface
flows 0
S 5.0. Does the landscape have the potential to support hydrologic functions of the site?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0713
Wetland name or number
HABITAT FUNCTIONS - Indicators that site functions to provide important habitat
H 1.0. Does the site have the potential to provide habitat?
Aquatic bed 4 structures or more: points = 4
Emergent 3 structures: points = 2
Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points - 1
Forested (areas where trees have > 30% cover) 1 structure: points = 0
If the unit has a Forested class, check if :
H 1.2. Hydroperiods
Permanently flooded or inundated 4 or more types present: points = 3
Seasonally flooded or inundated 3 types present: points = 2
Occasionally flooded or inundated 2 types present: points = 1
Saturated only 1 types present: points = 0
Permanently flowing stream or river in, or adjacent to, the wetland
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 points
H 1.3. Richness of plant species
If you counted: > 19 species points = 2
5 - 19 species points = 1
< 5 species points = 0
H 1.4. Interspersion of habitats
1
Count the number of plant species in the wetland that cover at least 10 ft2.Different patches of the same species can be combined to meet the size threshold and you do
not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple
loosestrife, Canadian thistle
1
Decide from the diagrams below whether interspersion among Cowardin plants classes
(described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats)
is high, moderate, low, or none. If you have four or more plant classes or three classes and open
water, the rating is always high.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
These questions apply to wetlands of all HGM classes.
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the
Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be
combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller
than 2.5 ac. Add the number of structures checked.
1
The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous,
moss/ground-cover) that each cover 20% within the Forested polygon
1
Check the types of water regimes (hydroperiods) present within the wetland. The water regime
has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of
hydroperiods ).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0714
Wetland name or number
H 1.5. Special habitat features:
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long)
Standing snags (dbh > 4 in) within the wetland
Total for H 1 Add the points in the boxes above 5
Rating of Site Potential If Score is: 15 - 18 = H 7 - 14 = M 0 - 6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat function of the site?
H 2.1 Accessible habitat (include only habitat that directly abuts wetland unit).
Calculate:
0 % undisturbed habitat + ( 61.6 % moderate & low intensity land uses / 2 ) = 30.8%
If total accessible habitat is:
> 1/3 (33.3%) of 1 km Polygon points = 3
20 - 33% of 1 km Polygon points = 2
10 - 19% of 1 km Polygon points = 1
< 10 % of 1 km Polygon points = 0
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate:
0 % undisturbed habitat + ( 98 % moderate & low intensity land uses / 2 ) = 49%
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10 - 50% and in 1-3 patches points = 2
Undisturbed habitat 10 - 50% and > 3 patches points = 1
Undisturbed habitat < 10% of 1 km Polygon points = 0
H 2.3 Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use points = (-2)
≤ 50% of 1km Polygon is high intensity points = 0
Total for H 2 Add the points in the boxes above 4
Rating of Landscape Potential If Score is: 4 - 6 = H 1 - 3 = M < 1 = L Record the rating on the first page
Site meets ANY of the following criteria:points = 2
It has 3 or more priority habitats within 100 m (see next page)
It is mapped as a location for an individual WDFW priority species
Site has 1 or 2 priority habitats (listed on next page) with in 100m points = 1
Site does not meet any of the criteria above points = 0
Rating of Value If Score is: 2 = H 1 = M 0 = L Record the rating on the first page
2
2
0
H 3.0. Is the habitat provided by the site valuable to society?
H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose
only the highest score that applies to the wetland being rated .
1
It provides habitat for Threatened or Endangered species (any plant
or animal on the state or federal lists)
It is a Wetland of High Conservation Value as determined by the
Department of Natural Resources
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
watershed plan
1
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends
at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at
least 33 ft (10 m)
Stable steep banks of fine material that might be used by beaver or muskrat for
denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs
or trees that have not yet weathered where wood is exposed)
At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas
that are permanently or seasonally inundated (structures for egg-laying by amphibians)
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata)
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0715
Wetland name or number
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the
earth in soils, rock, ice, or other geological formations and is large enough to contain a human.
Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m),
composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings.
May be associated with cliffs.
Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay
characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast
height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are >
12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are
addressed elsewhere.
Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha)
> 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters
exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of
snags, and quantity of large downed material is generally less than that found in old-growth; 80-200
years old west of the Cascade crest.
Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy
coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see
web link above).
Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both
aquatic and terrestrial ecosystems which mutually influence each other.
Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a
dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above ).
Instream: The combination of physical, biological, and chemical processes and conditions that
interact to provide functional life history requirements for instream fish and wildlife resources.
Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open
Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of
relatively undisturbed are in WDFW report – see web link on previous page).
WDFW Priority Habitats
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in
which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species
List. Olympia, Washington. 177 pp.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/
Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This
question is independent of the land use between the wetland unit and the priority habitat.
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species
of native fish and wildlife (full descriptions in WDFW PHS report).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 9 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0716
Wetland name or number
Wetland Type Category
Check off any criteria that apply to the wetland. List the category when the appropriate criteria are met.
SC 1.0. Estuarine Wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
The dominant water regime is tidal,
Vegetated, and
With a salinity greater than 0.5 ppt
Yes - Go to SC 1.1 No = Not an estuarine wetland
SC 1.1.
Yes = Category I No - Go to SC 1.2
SC 1.2.Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)
SC 2.1.
Yes - Go to SC 2.2 No - Go to SC 2.3
SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?
Yes = Category I No = Not WHCV
SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?
http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf
Yes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCV
SC 2.4.
Yes = Category I No = Not WHCV
SC 3.0. Bogs
SC 3.1.
Yes - Go to SC 3.3 No - Go to SC 3.2
SC 3.2.
Yes - Go to SC 3.3 No = Is not a bog
SC 3.3.
Yes = Is a Category I bog No - Go to SC 3.4
SC 3.4.
Yes = Is a Category I bog No = Is not a bog
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation
in bogs? Use the key below. If you answer YES you will still need to rate the
wetland based on its functions .
Does an area within the wetland unit have organic soil horizons, either peats or mucks,
that compose 16 in or more of the first 32 in of the soil profile?
Does an area within the wetland unit have organic soils, either peats or mucks, that are
less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic
ash, or that are floating on top of a lake or pond?
Does an area with peats or mucks have more than 70% cover of mosses at ground
level, AND at least a 30% cover of plant species listed in Table 4?
NOTE: If you are uncertain about the extent of mosses in the understory, you may
substitute that criterion by measuring the pH of the water that seeps into a hole dug at
least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present,
the wetland is a bog.
Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir,
western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann
spruce, or western white pine, AND any of the species (or combination of species)
listed in Table 4 provide more than 30% of the cover under the canopy?
Is the wetland within a National Wildlife Refuge, National Park, National Estuary
Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific
Reserve designated under WAC 332-30-151?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing,
and has less than 10% cover of non-native plant species. (If non-native species are
Spartina , see page 25)
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
The wetland has at least two of the following features: tidal channels, depressions with
open water, or contiguous freshwater wetlands.
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0717
Wetland name or number
SC 4.0. Forested Wetlands
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal Lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
Yes - Go to SC 5.1 No = Not a wetland in a coastal lagoon
SC 5.1. Does the wetland meet all of the following three conditions?
The wetland is larger than 1/10 ac (4350 ft2)
Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
In practical terms that means the following geographic areas:
Long Beach Peninsula: Lands west of SR 103
Grayland-Westport: Lands west of SR 105
Ocean Shores-Copalis: Lands west of SR 115 and SR 109
Yes - Go to SC 6.1 No = Not an interdunal wetland for rating
SC 6.1.
Yes = Category I No - Go to SC 6.2
SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger?
Yes = Category II No - Go to SC 6.3
SC 6.3.
Yes = Category III No = Category IV
Category of wetland based on Special Characteristics
If you answered No for all types, enter “Not Applicable” on Summary Form
Is the wetland west of the 1889 line (also called the Western Boundary of Upland
Ownership or WBUO)? If you answer yes you will still need to rate the wetland
based on its habitat functions.
Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form
(rates H,H,H or H,H,M for the three aspects of function)?
Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and
1 ac?
NA
Does the wetland have at least 1 contiguous acre of forest that meets one of these
criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you
answer YES you will still need to rate the wetland based on its functions.
Old-growth forests (west of Cascade crest): Stands of at least two tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac
(20 trees/ha) that are at least 200 years of age OR have a diameter at breast height
(dbh) of 32 in (81 cm) or more.
Mature forests (west of the Cascade Crest): Stands where the largest trees are 80-
200 years old OR the species that make up the canopy have an average diameter
(dbh) exceeding 21 in (53 cm).
The wetland lies in a depression adjacent to marine waters that is wholly or partially
separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently,
rocks
The lagoon in which the wetland is located contains ponded water that is saline or
brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to
be measured near the bottom )
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation,
grazing), and has less than 20% cover of aggressive, opportunistic plant species (see
list of species on p. 100).
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0718
Wetland name or number
Name of wetland (or ID #):Date of site visit: 4/25/2022
Rated by Trained by Ecology? Yes No Date of training 3/30/2016
HGM Class used for rating Wetland has multiple HGM classes? Yes No
NOTE: Form is not complete with out the figures requested (figures can be combined ).
Source of base aerial photo/map
OVERALL WETLAND CATEGORY IV (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
Category II - Total score = 20 - 22 function based
Category III - Total score = 16 - 19 on three
X Category IV - Total score = 9 - 15 ratings
(order of ratings
is not
important )
L L 9 = H, H, H
L H 8 = H, H, M
LMTotal 7 = H, H, L
7 = H, M, M
6 = H, M, L
6 = M, M, M
5 = H, L, L
5 = M, M, L
4 = M, L, L
3 = L, L, L
2. Category based on SPECIAL CHARACTERISTICS of wetland
X
RATING SUMMARY – Western Washington
Offsite Wetland - Wetland B
JMM/KN
Slope
ESRI aerial imagery
FUNCTION Improving
Water Quality
Hydrologic Habitat
6 12
CHARACTERISTIC Category
List appropriate rating (H, M, L)
Site Potential L
Landscape Potential L
Value L
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Coastal Lagoon
Score Based on
Ratings 33
Interdunal
None of the above
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0719
Wetland name or number
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Location of outlet (can be added to map of hydroperiods )
Boundary of area within 150 ft of the wetland (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Riverine Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Ponded depressions
Boundary of area within 150 ft of the wetland (can be added to another figure )
Plant cover of trees, shrubs, and herbaceous plants
Width of unit vs. width of stream (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of: Figure #
Cowardin plant classes
Plant cover of trees, shrubs, and herbaceous plants
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Plant cover of dense trees, shrubs, and herbaceous plants
Plant cover of dense, rigid trees, shrubs, and herbaceous plants
(can be added to another figure )
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
D 2.2, D 5.2
D 4.3, D 5.3
H 2.1, H 2.2, H 2.3
D 3.1, D 3.2
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
D 1.1, D 4.1
R 1.2, R 4.2
R 4.1
R 2.2, R 2.3, R 5.2
H 2.1, H 2.2, H 2.3
D 3.3
To answer questions:
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2
L 3.3
To answer questions:
R 3.1
R 3.2, R 3.3
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
L 1.2
L 2.2
S 2.1, S 5.1
H 2.1, H 2.2, H 2.3
S 3.1, S 3.2
S 3.3
H 1.1, H 1.4
H 1.2
S 1.3
S 4.1
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0720
Wetland name or number
For questions 1 -7, the criteria described must apply to the entire unit being rated.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO - go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine)YES - Freshwater Tidal Fringe
NO - go to 3 YES - The wetland class is Flats
If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
NO - go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?
The wetland is on a slope (slope can be very gradual ),
The water leaves the wetland without being impounded.
NO - go to 5 YES - The wetland class is Slope
5. Does the entire wetland unit meet all of the following criteria?
The overbank flooding occurs at least once every 2 years.
NO - go to 6 YES - The wetland class is Riverine
NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding.
The water flows through the wetland in one direction (unidirectional) and usually comes from seeps.
It may flow subsurface, as sheetflow, or in a swale without distinct banks.
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow
depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep).
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding
from that stream or river,
HGM Classification of Wetland in Western Washington
If hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit
with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to
Question 8.
If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.
If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be
used to score functions for estuarine wetlands.
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it.
Groundwater and surface water runoff are NOT sources of water to the unit.
The vegetated part of the wetland is on the shores of a body of permanent open water (without any
plants on the surface at any time of the year) at least 20 ac (8 ha) in size;
At least 30% of the open water area is deeper than 6.6 ft (2 m).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0721
Wetland name or number
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at
some time during the year? This means that any outlet, if present, is higher than the interior of the wetland.
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding?
The unit does not pond surface water more than a few inches. The unit seems to be maintained by high
groundwater in the area. The wetland may be ditched, but has no obvious natural outlet.
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For
example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a
Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE
HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT
(make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for
the rating system if you have several HGM classes present within the wetland unit being scored.
Slope + Depressional Depressional
Slope + Lake Fringe Lake Fringe
Depressional + Riverine along stream Depressional
NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of
the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10%
of the unit; classify the wetland using the class that represents more than 90% of the total area.
HGM classes within the wetland unit HGM class to
being rated use in rating
Slope + Riverine Riverine
Salt Water Tidal Fringe and any other Treat as
class of freshwater wetland ESTUARINE
If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than
2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating.
within boundary of depression
Depressional + Lake Fringe Depressional
Riverine + Lake Fringe Riverine
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0722
Wetland name or number
Slope is 1% or less points = 3
Slope is > 1% - 2%points = 2
Slope is > 2% - 5%points = 1
Slope is greater than 5%points = 0
Yes = 3 No = 0
Dense, uncut, herbaceous plants > 90% of the wetland area points = 6
Dense, uncut, herbaceous plants > ½ of area points = 3
Dense, woody, plants > ½ of area points = 2
Dense, uncut, herbaceous plants > ¼ of area points = 1
Does not meet any of the criteria above for plants points = 0
Total for S 1 Add the points in the boxes above 3
Rating of Site Potential If score is: 12 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
Yes = 1 No = 0
Other Sources Yes = 1 No = 0
Total for S 2 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 1 - 2 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 2 No = 0
Total for S 3 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
SLOPE WETLANDS
S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants:
Choose the points appropriate for the description that best fits the plants in the wetland. Dense
means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or
mowed and plants are higher than 6 in.
1
S 2.0. Does the landscape have the potential to support the water quality function of the site?
S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in
land uses that generate pollutants?0
S 2.2. Are there other sources of pollutants coming into the wetland that are
not listed in question S 2.1?0
Water Quality Functions - Indicators that the site functions to improve water quality
S 1.0. Does the site have the potential to improve water quality?
S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in
elevation for every 100 ft of horizontal distance)
2
S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic
(use NRCS definitions ):0
S 3.0. Is the water quality improvement provided by the site valuable to society?
S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river,
lake, or marine water that is on the 303(d) list?0
S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue?
At least one aquatic resource in the basin is on the 303(d) list.0
S 3.3. Has the site been identified in a watershed or local plan as important
for maintaining water quality? Answer YES if there is a TMDL for the basin in
which the unit is found ?
0
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0723
Wetland name or number
Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1
All other conditions points = 0
Rating of Site Potential If score is: 1 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Rating of Landscape Potential If score is: 1 = M 0 = L Record the rating on the first page
S 6.1. Distance to the nearest areas downstream that have flooding problems:
points = 2
Surface flooding problems are in a sub-basin farther down-gradient points = 1
No flooding problems anywhere downstream points = 0
Yes = 2 No = 0
Total for S 6 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
NOTES and FIELD OBSERVATIONS:
SLOPE WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosion
S 4.0. Does the site have the potential to reduce flooding and stream erosion?S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose
the points appropriate for the description that best fits conditions in the wetland. Stems of plants
should be thick enough (usually > 1 /8 in), or dense enough, to remain erect during surface
flows 0
S 5.0. Does the landscape have the potential to support hydrologic functions of the site?
S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land
uses or cover that generate excess surface runoff?0
S 6.0. Are the hydrologic functions provided by the site valuable to society?
0
The sub-basin immediately down-gradient of site has flooding
problems that result in damage to human or natural resources (e.g.,
houses or salmon redds)
S 6.2. Has the site been identified as important for flood storage or flood
conveyance in a regional flood control plan?0
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0724
Wetland name or number
HABITAT FUNCTIONS - Indicators that site functions to provide important habitat
H 1.0. Does the site have the potential to provide habitat?
Aquatic bed 4 structures or more: points = 4
Emergent 3 structures: points = 2
Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points - 1
Forested (areas where trees have > 30% cover) 1 structure: points = 0
If the unit has a Forested class, check if :
H 1.2. Hydroperiods
Permanently flooded or inundated 4 or more types present: points = 3
Seasonally flooded or inundated 3 types present: points = 2
Occasionally flooded or inundated 2 types present: points = 1
Saturated only 1 types present: points = 0
Permanently flowing stream or river in, or adjacent to, the wetland
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 points
H 1.3. Richness of plant species
If you counted: > 19 species points = 2
5 - 19 species points = 1
< 5 species points = 0
H 1.4. Interspersion of habitats
These questions apply to wetlands of all HGM classes.
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the
Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be
combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller
than 2.5 ac. Add the number of structures checked.
0
The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous,
moss/ground-cover) that each cover 20% within the Forested polygon
0
Check the types of water regimes (hydroperiods) present within the wetland. The water regime
has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of
hydroperiods ).
0
Count the number of plant species in the wetland that cover at least 10 ft2.Different patches of the same species can be combined to meet the size threshold and you do
not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple
loosestrife, Canadian thistle
0
Decide from the diagrams below whether interspersion among Cowardin plants classes
(described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats)
is high, moderate, low, or none. If you have four or more plant classes or three classes and open
water, the rating is always high.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0725
Wetland name or number
H 1.5. Special habitat features:
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long)
Standing snags (dbh > 4 in) within the wetland
Total for H 1 Add the points in the boxes above 1
Rating of Site Potential If Score is: 15 - 18 = H 7 - 14 = M 0 - 6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat function of the site?
H 2.1 Accessible habitat (include only habitat that directly abuts wetland unit).
Calculate:
% undisturbed habitat + (% moderate & low intensity land uses / 2 ) =
If total accessible habitat is:
> 1/3 (33.3%) of 1 km Polygon points = 3
20 - 33% of 1 km Polygon points = 2
10 - 19% of 1 km Polygon points = 1
< 10 % of 1 km Polygon points = 0
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate:
% undisturbed habitat + (% moderate & low intensity land uses / 2 ) =
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10 - 50% and in 1-3 patches points = 2
Undisturbed habitat 10 - 50% and > 3 patches points = 1
Undisturbed habitat < 10% of 1 km Polygon points = 0
H 2.3 Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use points = (-2)
≤ 50% of 1km Polygon is high intensity points = 0
Total for H 2 Add the points in the boxes above 6
Rating of Landscape Potential If Score is: 4 - 6 = H 1 - 3 = M < 1 = L Record the rating on the first page
Site meets ANY of the following criteria:points = 2
It has 3 or more priority habitats within 100 m (see next page)
It is mapped as a location for an individual WDFW priority species
Site has 1 or 2 priority habitats (listed on next page) with in 100m points = 1
Site does not meet any of the criteria above points = 0
Rating of Value If Score is: 2 = H 1 = M 0 = L Record the rating on the first page
1
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends
at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at
least 33 ft (10 m)
Stable steep banks of fine material that might be used by beaver or muskrat for
denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs
or trees that have not yet weathered where wood is exposed)
At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas
that are permanently or seasonally inundated (structures for egg-laying by amphibians)
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata)
3
3
0
H 3.0. Is the habitat provided by the site valuable to society?
H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose
only the highest score that applies to the wetland being rated .
1
It provides habitat for Threatened or Endangered species (any plant
or animal on the state or federal lists)
It is a Wetland of High Conservation Value as determined by the
Department of Natural Resources
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
watershed plan
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0726
Wetland name or number
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha)
> 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters
exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of
snags, and quantity of large downed material is generally less than that found in old-growth; 80-200
years old west of the Cascade crest.
Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy
coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see
web link above).
Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both
aquatic and terrestrial ecosystems which mutually influence each other.
Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a
dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above ).
Instream: The combination of physical, biological, and chemical processes and conditions that
interact to provide functional life history requirements for instream fish and wildlife resources.
Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open
Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of
relatively undisturbed are in WDFW report – see web link on previous page).
WDFW Priority Habitats
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in
which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species
List. Olympia, Washington. 177 pp.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/
Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This
question is independent of the land use between the wetland unit and the priority habitat.
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species
of native fish and wildlife (full descriptions in WDFW PHS report).
Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the
earth in soils, rock, ice, or other geological formations and is large enough to contain a human.
Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m),
composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings.
May be associated with cliffs.
Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay
characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast
height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are >
12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are
addressed elsewhere.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 9 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0727
Wetland name or number
Wetland Type Category
Check off any criteria that apply to the wetland. List the category when the appropriate criteria are met.
SC 1.0. Estuarine Wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
The dominant water regime is tidal,
Vegetated, and
With a salinity greater than 0.5 ppt
Yes - Go to SC 1.1 No = Not an estuarine wetland
SC 1.1.
Yes = Category I No - Go to SC 1.2
SC 1.2.Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)
SC 2.1.
Yes - Go to SC 2.2 No - Go to SC 2.3
SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?
Yes = Category I No = Not WHCV
SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?
http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf
Yes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCV
SC 2.4.
Yes = Category I No = Not WHCV
SC 3.0. Bogs
SC 3.1.
Yes - Go to SC 3.3 No - Go to SC 3.2
SC 3.2.
Yes - Go to SC 3.3 No = Is not a bog
SC 3.3.
Yes = Is a Category I bog No - Go to SC 3.4
SC 3.4.
Yes = Is a Category I bog No = Is not a bog
Is the wetland within a National Wildlife Refuge, National Park, National Estuary
Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific
Reserve designated under WAC 332-30-151?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing,
and has less than 10% cover of non-native plant species. (If non-native species are
Spartina , see page 25)
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
The wetland has at least two of the following features: tidal channels, depressions with
open water, or contiguous freshwater wetlands.
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation
in bogs? Use the key below. If you answer YES you will still need to rate the
wetland based on its functions.
Does an area within the wetland unit have organic soil horizons, either peats or mucks,
that compose 16 in or more of the first 32 in of the soil profile?
Does an area within the wetland unit have organic soils, either peats or mucks, that are
less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic
ash, or that are floating on top of a lake or pond?
Does an area with peats or mucks have more than 70% cover of mosses at ground
level, AND at least a 30% cover of plant species listed in Table 4?
NOTE: If you are uncertain about the extent of mosses in the understory, you may
substitute that criterion by measuring the pH of the water that seeps into a hole dug at
least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present,
the wetland is a bog.
Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir,
western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann
spruce, or western white pine, AND any of the species (or combination of species)
listed in Table 4 provide more than 30% of the cover under the canopy?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0728
Wetland name or number
SC 4.0. Forested Wetlands
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal Lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
Yes - Go to SC 5.1 No = Not a wetland in a coastal lagoon
SC 5.1. Does the wetland meet all of the following three conditions?
The wetland is larger than 1/10 ac (4350 ft2)
Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
In practical terms that means the following geographic areas:
Long Beach Peninsula: Lands west of SR 103
Grayland-Westport: Lands west of SR 105
Ocean Shores-Copalis: Lands west of SR 115 and SR 109
Yes - Go to SC 6.1 No = Not an interdunal wetland for rating
SC 6.1.
Yes = Category I No - Go to SC 6.2
SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger?
Yes = Category II No - Go to SC 6.3
SC 6.3.
Yes = Category III No = Category IV
Category of wetland based on Special Characteristics
If you answered No for all types, enter “Not Applicable” on Summary Form
Is the wetland west of the 1889 line (also called the Western Boundary of Upland
Ownership or WBUO)? If you answer yes you will still need to rate the wetland
based on its habitat functions.
Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form
(rates H,H,H or H,H,M for the three aspects of function)?
Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and
1 ac?
NA
Does the wetland have at least 1 contiguous acre of forest that meets one of these
criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you
answer YES you will still need to rate the wetland based on its functions.
Old-growth forests (west of Cascade crest): Stands of at least two tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac
(20 trees/ha) that are at least 200 years of age OR have a diameter at breast height
(dbh) of 32 in (81 cm) or more.
Mature forests (west of the Cascade Crest): Stands where the largest trees are 80-
200 years old OR the species that make up the canopy have an average diameter
(dbh) exceeding 21 in (53 cm).
The wetland lies in a depression adjacent to marine waters that is wholly or partially
separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently,
rocks
The lagoon in which the wetland is located contains ponded water that is saline or
brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to
be measured near the bottom )
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation,
grazing), and has less than 20% cover of aggressive, opportunistic plant species (see
list of species on p. 100).
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0729
Wetland name or number
Name of wetland (or ID #):Date of site visit: 4/25/2022
Rated by Trained by Ecology? Yes No Date of training 3/30/2016
HGM Class used for rating Wetland has multiple HGM classes? Yes No
NOTE: Form is not complete with out the figures requested (figures can be combined ).
Source of base aerial photo/map
OVERALL WETLAND CATEGORY IV (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
Category II - Total score = 20 - 22 function based
Category III - Total score = 16 - 19 on three
X Category IV - Total score = 9 - 15 ratings
(order of ratings
is not
important )
L L 9 = H, H, H
L H 8 = H, H, M
LHTotal 7 = H, H, L
7 = H, M, M
6 = H, M, L
6 = M, M, M
5 = H, L, L
5 = M, M, L
4 = M, L, L
3 = L, L, L
2. Category based on SPECIAL CHARACTERISTICS of wetland
X
Interdunal
None of the above
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Coastal Lagoon
Score Based on
Ratings 33713
CHARACTERISTIC Category
List appropriate rating (H, M, L)
Site Potential L
Landscape Potential L
Value L
RATING SUMMARY – Western Washington
Wetland D
JMM/KN
Slope
ESRI aerial imagery
FUNCTION Improving
Water Quality
Hydrologic Habitat
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0730
Wetland name or number
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Location of outlet (can be added to map of hydroperiods )
Boundary of area within 150 ft of the wetland (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Riverine Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Ponded depressions
Boundary of area within 150 ft of the wetland (can be added to another figure )
Plant cover of trees, shrubs, and herbaceous plants
Width of unit vs. width of stream (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of: Figure #
Cowardin plant classes
Plant cover of trees, shrubs, and herbaceous plants
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Plant cover of dense trees, shrubs, and herbaceous plants
Plant cover of dense, rigid trees, shrubs, and herbaceous plants
(can be added to another figure )
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
S 2.1, S 5.1
H 2.1, H 2.2, H 2.3
S 3.1, S 3.2
S 3.3
H 1.1, H 1.4
H 1.2
S 1.3
S 4.1
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2
L 3.3
To answer questions:
R 3.1
R 3.2, R 3.3
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
L 1.2
L 2.2
R 1.2, R 4.2
R 4.1
R 2.2, R 2.3, R 5.2
H 2.1, H 2.2, H 2.3
D 3.3
To answer questions:
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
D 2.2, D 5.2
D 4.3, D 5.3
H 2.1, H 2.2, H 2.3
D 3.1, D 3.2
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
D 1.1, D 4.1
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0731
Wetland name or number
For questions 1 -7, the criteria described must apply to the entire unit being rated.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO - go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine)YES - Freshwater Tidal Fringe
NO - go to 3 YES - The wetland class is Flats
If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
NO - go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?
The wetland is on a slope (slope can be very gradual ),
The water leaves the wetland without being impounded.
NO - go to 5 YES - The wetland class is Slope
5. Does the entire wetland unit meet all of the following criteria?
The overbank flooding occurs at least once every 2 years.
NO - go to 6 YES - The wetland class is Riverine
NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding.
The water flows through the wetland in one direction (unidirectional) and usually comes from seeps.
It may flow subsurface, as sheetflow, or in a swale without distinct banks.
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow
depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep).
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding
from that stream or river,
HGM Classification of Wetland in Western Washington
If hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit
with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to
Question 8.
If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.
If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be
used to score functions for estuarine wetlands.
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it.
Groundwater and surface water runoff are NOT sources of water to the unit.
The vegetated part of the wetland is on the shores of a body of permanent open water (without any
plants on the surface at any time of the year) at least 20 ac (8 ha) in size;
At least 30% of the open water area is deeper than 6.6 ft (2 m).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0732
Wetland name or number
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
Salt Water Tidal Fringe and any other Treat as
class of freshwater wetland ESTUARINE
If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than
2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating.
within boundary of depression
Depressional + Lake Fringe Depressional
Riverine + Lake Fringe Riverine
Slope + Depressional Depressional
Slope + Lake Fringe Lake Fringe
Depressional + Riverine along stream Depressional
NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of
the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10%
of the unit; classify the wetland using the class that represents more than 90% of the total area.
HGM classes within the wetland unit HGM class to
being rated use in rating
Slope + Riverine Riverine
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at
some time during the year? This means that any outlet, if present, is higher than the interior of the wetland.
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding?
The unit does not pond surface water more than a few inches. The unit seems to be maintained by high
groundwater in the area. The wetland may be ditched, but has no obvious natural outlet.
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For
example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a
Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE
HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT
(make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for
the rating system if you have several HGM classes present within the wetland unit being scored.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0733
Wetland name or number
Slope is 1% or less points = 3
Slope is > 1% - 2%points = 2
Slope is > 2% - 5%points = 1
Slope is greater than 5%points = 0
Yes = 3 No = 0
Dense, uncut, herbaceous plants > 90% of the wetland area points = 6
Dense, uncut, herbaceous plants > ½ of area points = 3
Dense, woody, plants > ½ of area points = 2
Dense, uncut, herbaceous plants > ¼ of area points = 1
Does not meet any of the criteria above for plants points = 0
Total for S 1 Add the points in the boxes above 2
Rating of Site Potential If score is: 12 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
Yes = 1 No = 0
Other Sources Yes = 1 No = 0
Total for S 2 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 1 - 2 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 2 No = 0
Total for S 3 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
S 3.0. Is the water quality improvement provided by the site valuable to society?
S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river,
lake, or marine water that is on the 303(d) list?0
S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue?
At least one aquatic resource in the basin is on the 303(d) list.0
S 3.3. Has the site been identified in a watershed or local plan as important
for maintaining water quality? Answer YES if there is a TMDL for the basin in
which the unit is found ?
0
S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants:
Choose the points appropriate for the description that best fits the plants in the wetland. Dense
means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or
mowed and plants are higher than 6 in.
2
S 2.0. Does the landscape have the potential to support the water quality function of the site?
S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in
land uses that generate pollutants?0
S 2.2. Are there other sources of pollutants coming into the wetland that are
not listed in question S 2.1?0
Water Quality Functions - Indicators that the site functions to improve water quality
S 1.0. Does the site have the potential to improve water quality?
S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in
elevation for every 100 ft of horizontal distance)
0
S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic
(use NRCS definitions ):0
SLOPE WETLANDS
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0734
Wetland name or number
Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1
All other conditions points = 0
Rating of Site Potential If score is: 1 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Rating of Landscape Potential If score is: 1 = M 0 = L Record the rating on the first page
S 6.1. Distance to the nearest areas downstream that have flooding problems:
points = 2
Surface flooding problems are in a sub-basin farther down-gradient points = 1
No flooding problems anywhere downstream points = 0
Yes = 2 No = 0
Total for S 6 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
NOTES and FIELD OBSERVATIONS:
S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land
uses or cover that generate excess surface runoff?0
S 6.0. Are the hydrologic functions provided by the site valuable to society?
0
The sub-basin immediately down-gradient of site has flooding
problems that result in damage to human or natural resources (e.g.,
houses or salmon redds)
S 6.2. Has the site been identified as important for flood storage or flood
conveyance in a regional flood control plan?0
SLOPE WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosion
S 4.0. Does the site have the potential to reduce flooding and stream erosion?S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose
the points appropriate for the description that best fits conditions in the wetland. Stems of plants
should be thick enough (usually > 1 /8 in), or dense enough, to remain erect during surface
flows 0
S 5.0. Does the landscape have the potential to support hydrologic functions of the site?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0735
Wetland name or number
HABITAT FUNCTIONS - Indicators that site functions to provide important habitat
H 1.0. Does the site have the potential to provide habitat?
Aquatic bed 4 structures or more: points = 4
Emergent 3 structures: points = 2
Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points - 1
Forested (areas where trees have > 30% cover) 1 structure: points = 0
If the unit has a Forested class, check if :
H 1.2. Hydroperiods
Permanently flooded or inundated 4 or more types present: points = 3
Seasonally flooded or inundated 3 types present: points = 2
Occasionally flooded or inundated 2 types present: points = 1
Saturated only 1 types present: points = 0
Permanently flowing stream or river in, or adjacent to, the wetland
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 points
H 1.3. Richness of plant species
If you counted: > 19 species points = 2
5 - 19 species points = 1
< 5 species points = 0
H 1.4. Interspersion of habitats
1
Count the number of plant species in the wetland that cover at least 10 ft2.Different patches of the same species can be combined to meet the size threshold and you do
not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple
loosestrife, Canadian thistle
1
Decide from the diagrams below whether interspersion among Cowardin plants classes
(described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats)
is high, moderate, low, or none. If you have four or more plant classes or three classes and open
water, the rating is always high.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
These questions apply to wetlands of all HGM classes.
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the
Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be
combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller
than 2.5 ac. Add the number of structures checked.
1
The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous,
moss/ground-cover) that each cover 20% within the Forested polygon
1
Check the types of water regimes (hydroperiods) present within the wetland. The water regime
has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of
hydroperiods ).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0736
Wetland name or number
H 1.5. Special habitat features:
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long)
Standing snags (dbh > 4 in) within the wetland
Total for H 1 Add the points in the boxes above 6
Rating of Site Potential If Score is: 15 - 18 = H 7 - 14 = M 0 - 6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat function of the site?
H 2.1 Accessible habitat (include only habitat that directly abuts wetland unit).
Calculate:
% undisturbed habitat + (% moderate & low intensity land uses / 2 ) =
If total accessible habitat is:
> 1/3 (33.3%) of 1 km Polygon points = 3
20 - 33% of 1 km Polygon points = 2
10 - 19% of 1 km Polygon points = 1
< 10 % of 1 km Polygon points = 0
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate:
% undisturbed habitat + (% moderate & low intensity land uses / 2 ) =
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10 - 50% and in 1-3 patches points = 2
Undisturbed habitat 10 - 50% and > 3 patches points = 1
Undisturbed habitat < 10% of 1 km Polygon points = 0
H 2.3 Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use points = (-2)
≤ 50% of 1km Polygon is high intensity points = 0
Total for H 2 Add the points in the boxes above 6
Rating of Landscape Potential If Score is: 4 - 6 = H 1 - 3 = M < 1 = L Record the rating on the first page
Site meets ANY of the following criteria:points = 2
It has 3 or more priority habitats within 100 m (see next page)
It is mapped as a location for an individual WDFW priority species
Site has 1 or 2 priority habitats (listed on next page) with in 100m points = 1
Site does not meet any of the criteria above points = 0
Rating of Value If Score is: 2 = H 1 = M 0 = L Record the rating on the first page
3
3
0
H 3.0. Is the habitat provided by the site valuable to society?
H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose
only the highest score that applies to the wetland being rated .
2
It provides habitat for Threatened or Endangered species (any plant
or animal on the state or federal lists)
It is a Wetland of High Conservation Value as determined by the
Department of Natural Resources
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
watershed plan
2
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends
at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at
least 33 ft (10 m)
Stable steep banks of fine material that might be used by beaver or muskrat for
denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs
or trees that have not yet weathered where wood is exposed)
At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas
that are permanently or seasonally inundated (structures for egg-laying by amphibians)
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata)
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0737
Wetland name or number
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the
earth in soils, rock, ice, or other geological formations and is large enough to contain a human.
Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m),
composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings.
May be associated with cliffs.
Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay
characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast
height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are >
12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are
addressed elsewhere.
Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha)
> 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters
exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of
snags, and quantity of large downed material is generally less than that found in old-growth; 80-200
years old west of the Cascade crest.
Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy
coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see
web link above).
Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both
aquatic and terrestrial ecosystems which mutually influence each other.
Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a
dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above ).
Instream: The combination of physical, biological, and chemical processes and conditions that
interact to provide functional life history requirements for instream fish and wildlife resources.
Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open
Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of
relatively undisturbed are in WDFW report – see web link on previous page).
WDFW Priority Habitats
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in
which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species
List. Olympia, Washington. 177 pp.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/
Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This
question is independent of the land use between the wetland unit and the priority habitat.
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species
of native fish and wildlife (full descriptions in WDFW PHS report).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 9 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0738
Wetland name or number
Wetland Type Category
Check off any criteria that apply to the wetland. List the category when the appropriate criteria are met.
SC 1.0. Estuarine Wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
The dominant water regime is tidal,
Vegetated, and
With a salinity greater than 0.5 ppt
Yes - Go to SC 1.1 No = Not an estuarine wetland
SC 1.1.
Yes = Category I No - Go to SC 1.2
SC 1.2.Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)
SC 2.1.
Yes - Go to SC 2.2 No - Go to SC 2.3
SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?
Yes = Category I No = Not WHCV
SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?
http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf
Yes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCV
SC 2.4.
Yes = Category I No = Not WHCV
SC 3.0. Bogs
SC 3.1.
Yes - Go to SC 3.3 No - Go to SC 3.2
SC 3.2.
Yes - Go to SC 3.3 No = Is not a bog
SC 3.3.
Yes = Is a Category I bog No - Go to SC 3.4
SC 3.4.
Yes = Is a Category I bog No = Is not a bog
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation
in bogs? Use the key below. If you answer YES you will still need to rate the
wetland based on its functions .
Does an area within the wetland unit have organic soil horizons, either peats or mucks,
that compose 16 in or more of the first 32 in of the soil profile?
Does an area within the wetland unit have organic soils, either peats or mucks, that are
less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic
ash, or that are floating on top of a lake or pond?
Does an area with peats or mucks have more than 70% cover of mosses at ground
level, AND at least a 30% cover of plant species listed in Table 4?
NOTE: If you are uncertain about the extent of mosses in the understory, you may
substitute that criterion by measuring the pH of the water that seeps into a hole dug at
least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present,
the wetland is a bog.
Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir,
western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann
spruce, or western white pine, AND any of the species (or combination of species)
listed in Table 4 provide more than 30% of the cover under the canopy?
Is the wetland within a National Wildlife Refuge, National Park, National Estuary
Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific
Reserve designated under WAC 332-30-151?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing,
and has less than 10% cover of non-native plant species. (If non-native species are
Spartina , see page 25)
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
The wetland has at least two of the following features: tidal channels, depressions with
open water, or contiguous freshwater wetlands.
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0739
Wetland name or number
SC 4.0. Forested Wetlands
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal Lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
Yes - Go to SC 5.1 No = Not a wetland in a coastal lagoon
SC 5.1. Does the wetland meet all of the following three conditions?
The wetland is larger than 1/10 ac (4350 ft2)
Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
In practical terms that means the following geographic areas:
Long Beach Peninsula: Lands west of SR 103
Grayland-Westport: Lands west of SR 105
Ocean Shores-Copalis: Lands west of SR 115 and SR 109
Yes - Go to SC 6.1 No = Not an interdunal wetland for rating
SC 6.1.
Yes = Category I No - Go to SC 6.2
SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger?
Yes = Category II No - Go to SC 6.3
SC 6.3.
Yes = Category III No = Category IV
Category of wetland based on Special Characteristics
If you answered No for all types, enter “Not Applicable” on Summary Form
Is the wetland west of the 1889 line (also called the Western Boundary of Upland
Ownership or WBUO)? If you answer yes you will still need to rate the wetland
based on its habitat functions.
Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form
(rates H,H,H or H,H,M for the three aspects of function)?
Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and
1 ac?
NA
Does the wetland have at least 1 contiguous acre of forest that meets one of these
criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you
answer YES you will still need to rate the wetland based on its functions.
Old-growth forests (west of Cascade crest): Stands of at least two tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac
(20 trees/ha) that are at least 200 years of age OR have a diameter at breast height
(dbh) of 32 in (81 cm) or more.
Mature forests (west of the Cascade Crest): Stands where the largest trees are 80-
200 years old OR the species that make up the canopy have an average diameter
(dbh) exceeding 21 in (53 cm).
The wetland lies in a depression adjacent to marine waters that is wholly or partially
separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently,
rocks
The lagoon in which the wetland is located contains ponded water that is saline or
brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to
be measured near the bottom )
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation,
grazing), and has less than 20% cover of aggressive, opportunistic plant species (see
list of species on p. 100).
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0740
Wetland name or number
Name of wetland (or ID #):Date of site visit: 4/25/2022
Rated by Trained by Ecology? Yes No Date of training 3/30/2016
HGM Class used for rating Wetland has multiple HGM classes? Yes No
NOTE: Form is not complete with out the figures requested (figures can be combined ).
Source of base aerial photo/map
OVERALL WETLAND CATEGORY IV (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
Category II - Total score = 20 - 22 function based
Category III - Total score = 16 - 19 on three
X Category IV - Total score = 9 - 15 ratings
(order of ratings
is not
important )
L L 9 = H, H, H
L H 8 = H, H, M
LHTotal 7 = H, H, L
7 = H, M, M
6 = H, M, L
6 = M, M, M
5 = H, L, L
5 = M, M, L
4 = M, L, L
3 = L, L, L
2. Category based on SPECIAL CHARACTERISTICS of wetland
X
RATING SUMMARY – Western Washington
Wetland E
JMM/KN
Slope
ESRI aerial imagery
FUNCTION Improving
Water Quality
Hydrologic Habitat
7 13
CHARACTERISTIC Category
List appropriate rating (H, M, L)
Site Potential L
Landscape Potential L
Value L
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Coastal Lagoon
Score Based on
Ratings 33
Interdunal
None of the above
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0741
Wetland name or number
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Location of outlet (can be added to map of hydroperiods )
Boundary of area within 150 ft of the wetland (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Riverine Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Ponded depressions
Boundary of area within 150 ft of the wetland (can be added to another figure )
Plant cover of trees, shrubs, and herbaceous plants
Width of unit vs. width of stream (can be added to another figure )
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of: Figure #
Cowardin plant classes
Plant cover of trees, shrubs, and herbaceous plants
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Map of: Figure #
Cowardin plant classes
Hydroperiods
Plant cover of dense trees, shrubs, and herbaceous plants
Plant cover of dense, rigid trees, shrubs, and herbaceous plants
(can be added to another figure )
Boundary of area within 150 ft of the wetland (can be added to another figure )
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
D 2.2, D 5.2
D 4.3, D 5.3
H 2.1, H 2.2, H 2.3
D 3.1, D 3.2
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
D 1.1, D 4.1
R 1.2, R 4.2
R 4.1
R 2.2, R 2.3, R 5.2
H 2.1, H 2.2, H 2.3
D 3.3
To answer questions:
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2
L 3.3
To answer questions:
R 3.1
R 3.2, R 3.3
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
L 1.2
L 2.2
S 2.1, S 5.1
H 2.1, H 2.2, H 2.3
S 3.1, S 3.2
S 3.3
H 1.1, H 1.4
H 1.2
S 1.3
S 4.1
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0742
Wetland name or number
For questions 1 -7, the criteria described must apply to the entire unit being rated.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO - go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine)YES - Freshwater Tidal Fringe
NO - go to 3 YES - The wetland class is Flats
If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
NO - go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?
The wetland is on a slope (slope can be very gradual ),
The water leaves the wetland without being impounded.
NO - go to 5 YES - The wetland class is Slope
5. Does the entire wetland unit meet all of the following criteria?
The overbank flooding occurs at least once every 2 years.
NO - go to 6 YES - The wetland class is Riverine
NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding.
The water flows through the wetland in one direction (unidirectional) and usually comes from seeps.
It may flow subsurface, as sheetflow, or in a swale without distinct banks.
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow
depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep).
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding
from that stream or river,
HGM Classification of Wetland in Western Washington
If hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit
with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to
Question 8.
If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.
If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be
used to score functions for estuarine wetlands.
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it.
Groundwater and surface water runoff are NOT sources of water to the unit.
The vegetated part of the wetland is on the shores of a body of permanent open water (without any
plants on the surface at any time of the year) at least 20 ac (8 ha) in size;
At least 30% of the open water area is deeper than 6.6 ft (2 m).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0743
Wetland name or number
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at
some time during the year? This means that any outlet, if present, is higher than the interior of the wetland.
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding?
The unit does not pond surface water more than a few inches. The unit seems to be maintained by high
groundwater in the area. The wetland may be ditched, but has no obvious natural outlet.
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For
example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a
Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE
HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT
(make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for
the rating system if you have several HGM classes present within the wetland unit being scored.
Slope + Depressional Depressional
Slope + Lake Fringe Lake Fringe
Depressional + Riverine along stream Depressional
NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of
the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10%
of the unit; classify the wetland using the class that represents more than 90% of the total area.
HGM classes within the wetland unit HGM class to
being rated use in rating
Slope + Riverine Riverine
Salt Water Tidal Fringe and any other Treat as
class of freshwater wetland ESTUARINE
If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than
2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating.
within boundary of depression
Depressional + Lake Fringe Depressional
Riverine + Lake Fringe Riverine
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0744
Wetland name or number
Slope is 1% or less points = 3
Slope is > 1% - 2%points = 2
Slope is > 2% - 5%points = 1
Slope is greater than 5%points = 0
Yes = 3 No = 0
Dense, uncut, herbaceous plants > 90% of the wetland area points = 6
Dense, uncut, herbaceous plants > ½ of area points = 3
Dense, woody, plants > ½ of area points = 2
Dense, uncut, herbaceous plants > ¼ of area points = 1
Does not meet any of the criteria above for plants points = 0
Total for S 1 Add the points in the boxes above 2
Rating of Site Potential If score is: 12 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
Yes = 1 No = 0
Other Sources Yes = 1 No = 0
Total for S 2 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 1 - 2 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 2 No = 0
Total for S 3 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
SLOPE WETLANDS
S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants:
Choose the points appropriate for the description that best fits the plants in the wetland. Dense
means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or
mowed and plants are higher than 6 in.
2
S 2.0. Does the landscape have the potential to support the water quality function of the site?
S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in
land uses that generate pollutants?0
S 2.2. Are there other sources of pollutants coming into the wetland that are
not listed in question S 2.1?0
Water Quality Functions - Indicators that the site functions to improve water quality
S 1.0. Does the site have the potential to improve water quality?
S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in
elevation for every 100 ft of horizontal distance)
0
S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic
(use NRCS definitions ):0
S 3.0. Is the water quality improvement provided by the site valuable to society?
S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river,
lake, or marine water that is on the 303(d) list?0
S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue?
At least one aquatic resource in the basin is on the 303(d) list.0
S 3.3. Has the site been identified in a watershed or local plan as important
for maintaining water quality? Answer YES if there is a TMDL for the basin in
which the unit is found ?
0
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0745
Wetland name or number
Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1
All other conditions points = 0
Rating of Site Potential If score is: 1 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Rating of Landscape Potential If score is: 1 = M 0 = L Record the rating on the first page
S 6.1. Distance to the nearest areas downstream that have flooding problems:
points = 2
Surface flooding problems are in a sub-basin farther down-gradient points = 1
No flooding problems anywhere downstream points = 0
Yes = 2 No = 0
Total for S 6 Add the points in the boxes above 0
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
NOTES and FIELD OBSERVATIONS:
SLOPE WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosion
S 4.0. Does the site have the potential to reduce flooding and stream erosion?S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose
the points appropriate for the description that best fits conditions in the wetland. Stems of plants
should be thick enough (usually > 1 /8 in), or dense enough, to remain erect during surface
flows 0
S 5.0. Does the landscape have the potential to support hydrologic functions of the site?
S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land
uses or cover that generate excess surface runoff?0
S 6.0. Are the hydrologic functions provided by the site valuable to society?
0
The sub-basin immediately down-gradient of site has flooding
problems that result in damage to human or natural resources (e.g.,
houses or salmon redds)
S 6.2. Has the site been identified as important for flood storage or flood
conveyance in a regional flood control plan?0
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0746
Wetland name or number
HABITAT FUNCTIONS - Indicators that site functions to provide important habitat
H 1.0. Does the site have the potential to provide habitat?
Aquatic bed 4 structures or more: points = 4
Emergent 3 structures: points = 2
Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points - 1
Forested (areas where trees have > 30% cover) 1 structure: points = 0
If the unit has a Forested class, check if :
H 1.2. Hydroperiods
Permanently flooded or inundated 4 or more types present: points = 3
Seasonally flooded or inundated 3 types present: points = 2
Occasionally flooded or inundated 2 types present: points = 1
Saturated only 1 types present: points = 0
Permanently flowing stream or river in, or adjacent to, the wetland
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 points
H 1.3. Richness of plant species
If you counted: > 19 species points = 2
5 - 19 species points = 1
< 5 species points = 0
H 1.4. Interspersion of habitats
These questions apply to wetlands of all HGM classes.
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the
Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be
combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller
than 2.5 ac. Add the number of structures checked.
1
The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous,
moss/ground-cover) that each cover 20% within the Forested polygon
0
Check the types of water regimes (hydroperiods) present within the wetland. The water regime
has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of
hydroperiods ).
0
Count the number of plant species in the wetland that cover at least 10 ft2.Different patches of the same species can be combined to meet the size threshold and you do
not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple
loosestrife, Canadian thistle
1
Decide from the diagrams below whether interspersion among Cowardin plants classes
(described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats)
is high, moderate, low, or none. If you have four or more plant classes or three classes and open
water, the rating is always high.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0747
Wetland name or number
H 1.5. Special habitat features:
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long)
Standing snags (dbh > 4 in) within the wetland
Total for H 1 Add the points in the boxes above 3
Rating of Site Potential If Score is: 15 - 18 = H 7 - 14 = M 0 - 6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat function of the site?
H 2.1 Accessible habitat (include only habitat that directly abuts wetland unit).
Calculate:
0 % undisturbed habitat + ( 61.6 % moderate & low intensity land uses / 2 ) = 30.8%
If total accessible habitat is:
> 1/3 (33.3%) of 1 km Polygon points = 3
20 - 33% of 1 km Polygon points = 2
10 - 19% of 1 km Polygon points = 1
< 10 % of 1 km Polygon points = 0
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate:
0 % undisturbed habitat + ( 98 % moderate & low intensity land uses / 2 ) = 49%
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10 - 50% and in 1-3 patches points = 2
Undisturbed habitat 10 - 50% and > 3 patches points = 1
Undisturbed habitat < 10% of 1 km Polygon points = 0
H 2.3 Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use points = (-2)
≤ 50% of 1km Polygon is high intensity points = 0
Total for H 2 Add the points in the boxes above 4
Rating of Landscape Potential If Score is: 4 - 6 = H 1 - 3 = M < 1 = L Record the rating on the first page
Site meets ANY of the following criteria:points = 2
It has 3 or more priority habitats within 100 m (see next page)
It is mapped as a location for an individual WDFW priority species
Site has 1 or 2 priority habitats (listed on next page) with in 100m points = 1
Site does not meet any of the criteria above points = 0
Rating of Value If Score is: 2 = H 1 = M 0 = L Record the rating on the first page
1
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends
at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at
least 33 ft (10 m)
Stable steep banks of fine material that might be used by beaver or muskrat for
denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs
or trees that have not yet weathered where wood is exposed)
At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas
that are permanently or seasonally inundated (structures for egg-laying by amphibians)
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata)
2
2
0
H 3.0. Is the habitat provided by the site valuable to society?
H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose
only the highest score that applies to the wetland being rated .
2
It provides habitat for Threatened or Endangered species (any plant
or animal on the state or federal lists)
It is a Wetland of High Conservation Value as determined by the
Department of Natural Resources
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
watershed plan
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0748
Wetland name or number
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha)
> 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters
exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of
snags, and quantity of large downed material is generally less than that found in old-growth; 80-200
years old west of the Cascade crest.
Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy
coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see
web link above).
Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both
aquatic and terrestrial ecosystems which mutually influence each other.
Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a
dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above ).
Instream: The combination of physical, biological, and chemical processes and conditions that
interact to provide functional life history requirements for instream fish and wildlife resources.
Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open
Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of
relatively undisturbed are in WDFW report – see web link on previous page).
WDFW Priority Habitats
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in
which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species
List. Olympia, Washington. 177 pp.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/
Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This
question is independent of the land use between the wetland unit and the priority habitat.
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species
of native fish and wildlife (full descriptions in WDFW PHS report).
Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the
earth in soils, rock, ice, or other geological formations and is large enough to contain a human.
Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m),
composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings.
May be associated with cliffs.
Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay
characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast
height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are >
12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are
addressed elsewhere.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 9 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0749
Wetland name or number
Wetland Type Category
Check off any criteria that apply to the wetland. List the category when the appropriate criteria are met.
SC 1.0. Estuarine Wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
The dominant water regime is tidal,
Vegetated, and
With a salinity greater than 0.5 ppt
Yes - Go to SC 1.1 No = Not an estuarine wetland
SC 1.1.
Yes = Category I No - Go to SC 1.2
SC 1.2.Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)
SC 2.1.
Yes - Go to SC 2.2 No - Go to SC 2.3
SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?
Yes = Category I No = Not WHCV
SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?
http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf
Yes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCV
SC 2.4.
Yes = Category I No = Not WHCV
SC 3.0. Bogs
SC 3.1.
Yes - Go to SC 3.3 No - Go to SC 3.2
SC 3.2.
Yes - Go to SC 3.3 No = Is not a bog
SC 3.3.
Yes = Is a Category I bog No - Go to SC 3.4
SC 3.4.
Yes = Is a Category I bog No = Is not a bog
Is the wetland within a National Wildlife Refuge, National Park, National Estuary
Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific
Reserve designated under WAC 332-30-151?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing,
and has less than 10% cover of non-native plant species. (If non-native species are
Spartina , see page 25)
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
The wetland has at least two of the following features: tidal channels, depressions with
open water, or contiguous freshwater wetlands.
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation
in bogs? Use the key below. If you answer YES you will still need to rate the
wetland based on its functions.
Does an area within the wetland unit have organic soil horizons, either peats or mucks,
that compose 16 in or more of the first 32 in of the soil profile?
Does an area within the wetland unit have organic soils, either peats or mucks, that are
less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic
ash, or that are floating on top of a lake or pond?
Does an area with peats or mucks have more than 70% cover of mosses at ground
level, AND at least a 30% cover of plant species listed in Table 4?
NOTE: If you are uncertain about the extent of mosses in the understory, you may
substitute that criterion by measuring the pH of the water that seeps into a hole dug at
least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present,
the wetland is a bog.
Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir,
western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann
spruce, or western white pine, AND any of the species (or combination of species)
listed in Table 4 provide more than 30% of the cover under the canopy?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0750
Wetland name or number
SC 4.0. Forested Wetlands
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal Lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
Yes - Go to SC 5.1 No = Not a wetland in a coastal lagoon
SC 5.1. Does the wetland meet all of the following three conditions?
The wetland is larger than 1/10 ac (4350 ft2)
Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
In practical terms that means the following geographic areas:
Long Beach Peninsula: Lands west of SR 103
Grayland-Westport: Lands west of SR 105
Ocean Shores-Copalis: Lands west of SR 115 and SR 109
Yes - Go to SC 6.1 No = Not an interdunal wetland for rating
SC 6.1.
Yes = Category I No - Go to SC 6.2
SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger?
Yes = Category II No - Go to SC 6.3
SC 6.3.
Yes = Category III No = Category IV
Category of wetland based on Special Characteristics
If you answered No for all types, enter “Not Applicable” on Summary Form
Is the wetland west of the 1889 line (also called the Western Boundary of Upland
Ownership or WBUO)? If you answer yes you will still need to rate the wetland
based on its habitat functions.
Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form
(rates H,H,H or H,H,M for the three aspects of function)?
Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and
1 ac?
NA
Does the wetland have at least 1 contiguous acre of forest that meets one of these
criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you
answer YES you will still need to rate the wetland based on its functions.
Old-growth forests (west of Cascade crest): Stands of at least two tree species,
forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac
(20 trees/ha) that are at least 200 years of age OR have a diameter at breast height
(dbh) of 32 in (81 cm) or more.
Mature forests (west of the Cascade Crest): Stands where the largest trees are 80-
200 years old OR the species that make up the canopy have an average diameter
(dbh) exceeding 21 in (53 cm).
The wetland lies in a depression adjacent to marine waters that is wholly or partially
separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently,
rocks
The lagoon in which the wetland is located contains ponded water that is saline or
brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to
be measured near the bottom )
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation,
grazing), and has less than 20% cover of aggressive, opportunistic plant species (see
list of species on p. 100).
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-
grazed or un-mowed grassland.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015Exhibit 49 Page 0751
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI AERIAL IMAGERY
FIGURE A
#0084
JULY 2022
0 10050
Feet
WETLAND B & E RATING FIGURES
LEGEND
150 ft Buffer
Cowardin
PEM
PSS OAK BAY ROADWetland B, Category IV
PSS/EM
Saturated only
dense woody plants >1/2
<90% dense uncut rigid plants
Wetland E, Category IV
PSS/EM
Saturated only
dense uncut herbaceous plants >90%
<90% dense uncut rigid plants
Exhibit 49 Page 0752
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: ESRI AERIAL IMAGERY
FIGURE B
#0084
JULY 2022
0 1,000500
Feet
WETLAND B & E RATING FIGURES
1 km buffer (976.6 acres)
LEGEND
Wetlands
Accessible Habitat (61.6% of 1 km)
Land Use
High Intensity Land Use
Moderate/Low Intensity Land Use
Exhibit 49 Page 0753
Pomona Woods
Critical Areas Report
Oak Bay Road, Jefferson County, Washington
SOURCE: WA DEPARTMENT OF ECOLOGY WATER QUALITY ATLAS
FIGURE C
#0084
JULY 2022
WETLAND B & E RATING FIGURES
Puget Sound Nutrient Source Reduction Project
TMDL in Development
Exhibit 49 Page 0754
APPENDIX G
APPENDIX G
Site Plan
Exhibit 49 Page 0755
145 150 155 1 6 0 1 6 5 1 7 0 175 180 185 1 9 0 195 2 0 0 20 5 21 0 2 1 5 220 2 2 5 2 3 0
23 5 240 245 250 255 260 265 270 275 2 8 0 2 8 5 2 9 0 295
300 305 310 315
320 325 3 3 0 3 3 5 3 4 0 345 1 40 145 1 5 0 155 160 1 6 5 170 175 180 185 190 195 200 205 210 215 220
225
230
235 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 3 2 5 330 335
340 345 3 5 0 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215
220
225 230 235 240 2 4 5 250 255 2 6 0 2 6 5 270 275 2 80 285
290
295 300 305 310 315 320 325 330 335
340 340 340 345 30 parking stallspulloutLAWNManager's Residence1002000Scale 1" = 100'turnaround1002000Retreat BuildingExisting Drainage CulvertMile 3 Marker921183002Driveway21.54 acresOA K BAY ROADSeptic DrainfieldSetback LineCommercial ForestCommercial ForestScale 1" = 100'OA K BAY ROAD
ada1 parking stallProposed Sign Locationdeliveries921183008Proposed extension of PUD water mainadaScreen-A Landscaping (50' Green Hatched Area) 198,443 sf Landscaping is the already existing natural stand of mature evergreen (primarily cedar, fir, hemlock) and deciduous (big leafmaple and alder) trees. The understory consists mostly of 6 foot high sword ferns with some salal, huckleberry and other native species.250' - 0"250' - 0"5' - 0"50' - 0"91' - 9"252' - 0"310' - 6"293' - 1"59' - 10"151' - 7"5' - 0"Land DisturbanceLand DisturbanceLand Disturbance30' - 0"Pomona Woods Owner: Ann Burkhart 206-480-8467 pomonawoods@gmail.comSITE PLANUpdated 8 July 2022Conceptual Site Plan. Not to Scale. Locations and distances approximate.Exhibit 49 Page 0756