Critical Areas Report_final_reduced
Prepared for
Matt Weber
AHBL, Inc.
Tacoma, WA
The Summit at Thompson Creek - Yelm, WA
Wetland Delineation and Stream Assessment
Report
Prepared by
Land Services Northwest
120 State Avenue NE PMB 190
Olympia, WA 98501
August 4, 2022
i
Table of Contents
Table of Contents
Table of Contents ........................................................................................................................................... i
Executive Summary ...................................................................................................................................... iii
1.0 INTRODUCTION ................................................................................................................................. 1
2.0 GENERAL DESCRIPTION AND LAND USE ........................................................................................... 2
2.1 Historical and Current Land Use ........................................................................................... 2
Figure 2 - Current Conditions .................................................................................................................... 3
3.0 METHODOLOGY ................................................................................................................................ 4
3.1 Existing Information Review ................................................................................................. 4
3.2 Analysis of Existing Information ........................................................................................................ 4
National Wetland Inventory (NWI) Map ............................................................................................................... 4
NRCS Soils Map ................................................................................................................................................... 5
Thurston County Geodata Wetland Inventory ....................................................................................................... 5
USGS Topographic Maps ...................................................................................................................................... 5
WADNR Forest Practices Map ............................................................................................................................. 5
WDFW Priority Habitats and Species Inventory (PHS) and Salmonscape ........................................................... 5
NOAA NOW Precipitation Data ........................................................................................................................... 6
3.3 Field Investigation ................................................................................................................. 6
Determination Guidelines ...................................................................................................................................... 6
General Field Guidelines ....................................................................................................................................... 6
Table 1 Indicator Status Ratings ............................................................................................................................ 7
3.4 Wetland Study ....................................................................................................................... 7
Field Survey ........................................................................................................................................................... 7
Figure 3 – Test Pit Locations ................................................................................................................................. 8
4.0 RESULTS............................................................................................................................................. 9
4.1 Existing Conditions ................................................................................................................ 9
4.2 Wetlands ............................................................................................................................... 9
Wetland A .............................................................................................................................................................. 9
• Plants ................................................................................................................................................... 9
• Soils ..................................................................................................................................................... 9
• Hydrology ............................................................................................................................................ 9
Wetland B .............................................................................................................................................................. 9
• Plants ................................................................................................................................................. 10
• Soils ................................................................................................................................................... 10
• Hydrology .......................................................................................................................................... 10
Wetland C ............................................................................................................................................................ 10
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• Plants ................................................................................................................................................. 10
• Soils ................................................................................................................................................... 10
• Hydrology .......................................................................................................................................... 10
5.0 WETLAND FUNCTIONAL VALUES .................................................................................................... 10
5.1 Wetland Functional Analysis Methodology ........................................................................ 10
5.2 Wetland Functions ............................................................................................................. 11
Wetland A ............................................................................................................................................................ 11
• Water Quality .................................................................................................................................... 11
• Hydrologic ......................................................................................................................................... 11
• Habitat ............................................................................................................................................... 11
Wetland B ............................................................................................................................................................ 12
• Water Quality .................................................................................................................................... 12
• Hydrologic ......................................................................................................................................... 12
• Habitat ............................................................................................................................................... 12
Wetland C ............................................................................................................................................................ 12
• Water Quality .................................................................................................................................... 12
• Hydrologic ......................................................................................................................................... 12
• Habitat ............................................................................................................................................... 12
6.0 REGULATORY CONSIDERATIONS ..................................................................................................... 13
6.1 City of Yelm Regulations ................................................................................................................... 13
Wetlands .............................................................................................................................................................. 13
Wetland Categories and Scores ........................................................................................................................... 13
Reductions ........................................................................................................................................................... 14
Streams ................................................................................................................................................................ 14
Figure 4 - Wetland and Stream Buffers (Not a Survey)........................................................................... 16
Table 2 - Summary of Wetlands and Streams on or in the Vicinity of the Subject Property ............................... 17
FEMA Flood Zone .................................................................................................................................... 17
6.2 Corps Regulations ............................................................................................................................. 17
6.3 Department of Ecology ..................................................................................................................... 17
7.0 WILDLIFE ......................................................................................................................................... 18
7.1 Observed Wildlife Summary ............................................................................................................. 18
8.0 PROPOSED PROJECT ........................................................................................................................ 18
8.1 Description .......................................................................................................................... 18
8.2 Development Impacts ......................................................................................................... 18
8.3 Impact Avoidance and Minimization .................................................................................. 18
8.4 Minimization of Water Quality Impacts .............................................................................. 19
9.0 SUMMARY AND CONCLUSIONS ...................................................................................................... 19
10.0 LIMITATIONS ................................................................................................................................... 19
11.0 REFERENCE ...................................................................................................................................... 20
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Executive Summary
Site Name: The Summit at Thompson Creek
Parcel #’s: 21723140102, 21724220100, and 21723140000
Zoning: R-4, Residential
Area: 1,555,904 (34.57 acres after proposed BLA)
Site Location: 14504 Berry Valley Road SE and 14444 Berry Valley Road SE
Project Staff: Alex Callender MS, PWS
Field Survey Conducted: December 10, 2021, February 11, April 19, and May 26, 2022
Project Description: Subdivision into 101 lots with required open space tracts, stormwater tracts, roads
for ingress and egress and utilities such as electricity, cable, water, and sidewalks. (See Summary Table
Below)
Findings: Three jurisdictional wetlands and a Type 5 stream was found on and offsite.
Wetland A is a Category IV wetland slope wetland with an overall score of 15 and a habitat score of six
(MHL). Wetlands with an overall score of fifteen habitat score of six (MHL) in the City of Yelm typically
carry a 50-foot buffer.
Wetland B is a Category II Riverine Wetland that encompasses Thompson Creek and shares the OHWM
with the creek. This wetland has an overall score of 20 and a habitat score of six (LMH). This wetland will
carry a 150-foot buffer.
Wetland C is a small depressional wetland with an overall score of 15 and a habitat score of five (LHL). It
will carry a 50-foot buffer.
Thompson-Creek is found on and offsite. This stream was determined to be a site Type 5 stream and
according to Yelm Municipal code, this stream carries a 150-foot buffer which is coincident with the
buffer of Wetland B.
.
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1.0 INTRODUCTION
This report is the result of a critical areas study of the21723140102, 21724220100, and 21723140000
described below (Figure 1).
Parcel
Number
Address Acreage Partial Legal Description
21723140102 14504 BERRY
VALLEY RD SE
22.33 Section 23 Township 17 Range 1E SE NE PTN TR B
BLA-998233 3302942 (OTHERPTN IS 21723140101).
21724230100 14444 BERRY
VALLEY RD SE
9.35 24-17-1E SW NW COM NE COR W1320F S406F;
ELd312F EX S 20F & PTN BAP 266.98F S OF NE COR
SD SUB; S80-25-13W TO INT S LN ABOVE POB; S80-
25-13W TO CREEK; NWLY TO S LN STRIP; E POB
21723140000 14444 BERRY
VALLEY RD SE
12.91 Section 23 Township 17 Range 1E Quarter SE NE BLA-
998233 TR A Document 3302942 INCLUDING 1980
SILVERCREST 48/34
This report was prepared to satisfy the critical areas review process required by the City of Yelm
Development Regulations Title 18. 21 Critical Areas and Resource Lands
The City of Yelm and possibly other agencies that may evaluate impacts to critical areas from the
proposed project will be able to utilize information in this report.
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Figure 1-Vicinity Map
2.0 GENERAL DESCRIPTION AND LAND USE
2.1 Historical and Current Land Use
Historically, parcel #21723140000 has had a single-family residence and appurtenances situated
between the forest and Thompson Creek. In the eastern portion it is pasture. In the western portion it is
forestland. There is a hill that slopes toward a creek on the western portion of the property. This
property is surrounded by forest to the west and pasture to the north and forest to the south
Parcel #21724230100 is transected by Thompson Creek. This area is pasture. There is a single-family
residence to the north and Berry Valley Road SE to the south. To the north is a group of single-family
homes and pastureland on the northeastern side of the creek.
Parcel #21723140102 has a new subdivision to the south and a group of mobile homes to the east. On
site there are two ag outbuildings which are associated with past ag activities. There is vacant land
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offsite to the west. Most of the property in the western portion is unused hayfield or wetland. There is
a dairy pond that has been decommissioned and no water was found in this area.
Figure 2 - Current Conditions
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3.0 METHODOLOGY
3.1 Existing Information Review
Background information on possible wetlands was reviewed prior to field investigations and included
the following:
National Wetlands Inventory (NWI) Map, USFWS Shapefile Data (Appendix B)
Thurston County Area Soil Survey, Soil Conservation Service (U.S. Department of Agriculture, 1973)
National Resource Conservation Service Shapefiles (NRCS Soils Data Mart, 2006) (Appendix C)
Thurston County Geodata Wetland Inventory (Appendix D)
USGS 7.5 Minute Quadrangle Topographic Maps (Appendix E)
WDNR Forest Practices Activity Map (Appendix F)
Washington Department of Fish and Wildlife Priority Habitats and Species Database and Salmonscape
(Appendix G)
NOAA Now Precipitation Data (Appendix H)
Washington Department of Natural Resources Natural Heritage Database
United States Hydric Soils List (U.S. Department of Agriculture 1991)
Thurston County Code Chapter 24
3.2 Analysis of Existing Information
The following existing information was reviewed to gain a better understanding of on-site conditions
and its position in the landscape.
National Wetland Inventory (NWI) Map
The National Wetland Inventory (NWI) map (Appendix B), developed by the U.S. Fish and Wildlife
Service (USFWS), shows:
• PEM1C Palustrine Emergent Persistent Seasonally Flooded and PSSC Palustrine Shrub Scrub
Seasonally flooded wetland to the north of parcel #21723140000 on and within 315 feet of the
subject property.
• R5UBH Riverine Intermittent Streambed Seasonally Flooded wetland and PEM1C Palustrine
Emergent Seasonally Flooded Wetland in the general position of Thompson Cree on and within
315 feet of the subject property.
• A PEM1C wetland in the western portion of parcel#21723140102 in the general position of
Wetland A. A PUBHx wetland is located in the general vicinity of the Dairy Pond.
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NRCS Soils Map
The Natural Resources Conservation Service (NRCS) has mapped the site (Appendix C) as containing:
Hydric Soils:
• McKenna gravelly silt loam, 0 to 5 percent slopes
Non-Hydric Soils
• Yelm fine sandy loam, 0 to 3 percent slopes and 3 to 15 percent slopes
• Spanaway gravelly sandy loam 3-15 percent slopes
Thurston County Geodata Wetland Inventory
The Thurston County Geodata has a mapping tool that depicts various critical areas such as streams and
wetlands. (Appendix D). This site shows:
• PFO Palustrine Forested wetlands on and within 315 feet to the northwest and southwest of the
subject parcel.
• OWx Open Water forested excavated wetland that appears to be a dairy pond on the subject
parcel.
• PEM Palustrine Emergent on and offsite in the western portion within 315 feet of the subject
parcel.
• Thompson Creek which is a Type 5 stream and associated small riverine wetlands that area PEMf
which is Palustrine Emergent Semi permanently flooded...
USGS Topographic Maps
The USGS has topographical maps that depict natural and artificial features on the landscape including
wetlands. (Appendix E). This map shows Thomson Creek transecting parcel # 21724230100
WADNR Forest Practices Map
The WADNR Forest Practices Division has a mapping tool for determining predictive stream types in
accordance with attributes for WAC222-16-32 WATER TYPING. (Appendix F). This map shows Thompson
Creek transecting Parcel # 21724230100 as a Type F stream.
WDFW Priority Habitats and Species Inventory (PHS) and Salmonscape
The Department of Fish and Wildlife maintains an inventory of priority habitats and species information
(Appendix G).
The PHS database shows a general polygon for the little brown bat. The little brown bat may feed on
macroinvertebrates at night when they emerge from the stream and wetland. The forest is young, so it
is not likely that there are areas for the species to hibernate or hide for torpor.
Salmonscape shows salmonid usage by Sockeye, Chinook, Coho, and winter steelhead. Although there
may be fish use in the winter, The stream is choked with Reed canary grass, and it is there are not good
spawning substrate for breeding and egg laying. No fish were observed during the site visits. Chinook
salmon and Steelhead Trout area threatened under ESA; however, it does not appear that this area is
utilized by the salmon for spawning or rearing due to poor habitat from Reed canary grass and lack of
spawning gravels.
Type 5
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NOAA NOW Precipitation Data
NOAA maintains a database that graphs the current precipitation against the wettest, driest, and normal
accumulations of record. (Appendix H). This data shows that the year had periods of record rains up
until the end of May.
3.3 Field Investigation
Determination Guidelines
Land Services Northwest based its wetland identification and delineation upon the 1987 Army Corps of
Engineers Wetland Delineation Manual (Environmental Laboratory, 1987) and the regional specificity
found in Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western
Mountains, Valleys, and Coast Region (Version 2.0) (USACE, 2010). Generally, as outlined in the
manuals, wetlands are distinguished from other landforms by three criteria: 1) hydrophytic vegetation,
2) hydric soils, and 3) wetland hydrology.
General Field Guidelines
Plant species were identified according to the taxonomy in Flora of the Pacific Northwest (Hitchcock and
Cronquist, 1973), and the wetland status of plant species was assigned according to: The National
Wetland Plant List: 2016 (Lichvar, 2016). Wetland classes were determined by the U.S. Fish and Wildlife
Service’s system of wetland classification (FGDC, 2013). The wetland determination was based mainly
on soils, vegetation, and hydrology characteristics indicative of wetland conditions.
The Corps Manual and Supplement describes soil, vegetation, and hydrological indicators of wetlands. A
hydric soil is a soil that formed under conditions of saturation, flooding, or ponding long enough during
the growing season to develop anaerobic conditions in the upper par (National Technical Committee for
Hydric Soils, 1994). Anaerobic conditions cause redoximorphic features to develop, which can be
evidenced through the observation of mottling or gleying in the soil. Soils are hydric if they match the
indicators in the supplement or meet the technical definition.
A soils evaluation was performed to determine if the area contained hydric soils. Additional test plots
were sampled to gage possible wetland indicators and characteristics. Soils are normally excavated to
18 inches or more below the surface within a test pit to evaluate soil characteristics and hydrological
conditions in both wetland and upland areas. Soil chroma (color) is evaluated using the Munsell Color
Chart (Munsell Color, 1988).
The COE describe a wetland rating system for plants. Each plant species is assigned a probability of
occurrence within wetlands, which is referred to as its wetland status. The wetland plant indicator
system is as follows:
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Table 1 Indicator Status Ratings
Indicator Status Abrv. Definitions - Short Version ( ERDC/CRREL TN-12-1 )
Obligate OBL Almost always occur in wetlands.
Facultative Wetland FACW Usually occur in wetlands but may occur in non-wetlands.
Facultative FAC Occur in wetlands and nonwetlands.
Facultative Upland FACU Usually occur in non-wetlands, but may occur in wetlands.
Upland UPL Almost never occur in wetlands.
(USACE, 2016)
In general, under the Federal methodology, more than 50 percent of the predominant plant species
within a test plot must be rated FAC or wetter (i.e., FACW, OBL) to satisfy the wetland criteria for
hydrophytic vegetation. Dominant species are those when ranked comprise 50% of the total or those
that have a percent cover greater or equal to 20 percent within the test plot. Only dominant plant
species were considered in the data analysis.
If wetland hydrology, including pooling, ponding, and soil saturation, is not clearly evident, hydrological
conditions may be observed through surface or soil indicators. Indicators of hydrological conditions
include drainage patterns, drift lines, sediment deposition, watermarks, historic records, visual
observation of saturated soils, and visual observation of inundation.
3.4 Wetland Study
Field Survey
A wetland reconnaissance was performed on December 10, 2021, for parcel #21724230100 and
#21723140000. Another reconnaissance was conducted on February 11, 2022, to identify wetlands
present on the parcel #21723140102. Observations were made of the general plant communities,
wildlife habitats, and the locations of potential streams and wetland areas. Present and past land-use
practices were also noted, as were significant geological and hydrological features
Once likely wetland areas were located, the Routine Onsite Determination Method was used to identify
the presence of wetland parameters and to delineate the outer edge of the wetlands using the
procedures outlined in the Corps of Engineers Wetland Delineation Manual (Environmental Laboratory,
1987). The Routine Onsite Determination Method was used in areas that maintained normal
circumstances, were not significantly disturbed, and were not potential problem areas. A formal
wetland delineation was performed on February 10 and April 19, 2022, to flag and document on-site
wetlands and to identify and map off-site wetlands within 315 feet of the subject property as we are
able.
Test pits were dug on both December 10, 2021, February 11, April 19, and May 26, 2022, to develop a
better understanding of soil profiles onsite. Soils were excavated to 18 inches or more below the
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surface within a test pit to evaluate soil characteristics and hydrological conditions throughout the site.
Soil chroma (color) is evaluated using the Munsell Color Chart (Munsell Color, 1988) (Figure 3). These
results were entered in wetland data sheets (Appendix I).
Figure 3 – Test Pit Locations
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4.0 RESULTS
4.1 Existing Conditions
The subject properties have varying topography with Parcel # 21723140000 flat in the east with slope to
the Thompson Creek in the eastern half. Thompson Creek transects this property with a south to north
flow. The property slopes uphill from the creek to the western property line. This property is mostly
grassland.
Parcel #21723140000 is adjacent to the parcel#21723140000 and the slope continues uphill toward the
residence in the central portion of the property where it then slopes downhill to the west. In the west
along the western property line there is a swale where water concentrates and creates wetland
conditions. This flows to the north.
Parcel # 21723140102 is generally flat on a hilltop with the slope off of the hill to the east in the eastern
boundary, but most of the slope is to the west. There is what appears to be a decommissioned dairy
pond in the center of the property and a swale along the western property line that flows to the north.
4.2 Wetlands
Three wetlands, labeled Wetland A, B, and C were identified during the reconnaissance and formally
investigated on April 19, 2022, and May 26, 2022.
Wetland A
Wetland A is a 3.2 – acre on and offsite, seasonally flooded slope HGM wetland fed by slope seeps and
precipitation. All site visits were conducted during periods of rain and represent the wetter periods of
record in this area.
•Plants
Black cottonwood (Populous balsamifera; FAC), Red osier dogwood (Cornus alba, FACW),
salmonberry (Rubus spectabilis; FAC) and Slough sedge (Carex obnupta; OBL) with smaller
amounts of Western red cedar, Stinging nettles (Urtica dioica.
•Soils
10YR 3/1, with a depleted silt layer containing 10YR 4/2 with a 10YR 4/6 redoximorphic features.
The delineation of the wetland area closely follows the topography of the site where the hydric
soils are limited to the lower portion of the hillslope.
•Hydrology
The area was explored in February after a period of rain in the early growing season for the
reconnaissance view and hydrology was present in many areas. During the delineation, it was
May, and hydrology was still present.
Wetland B
Wetland B is a small .264 acre /11,499 square foot Riverine Emergent Seasonally flooded (REMC)
wetland caused associated with Thompson Creek. It appears that the extent of this wetland has
diminished over time as the Thurston County Wetland layer shows this wetland as much bigger than it is
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now. We conducted soil test pits during wet periods and the wetland was found within the ordinary
high water of the stream. We observed this area for the winter season, and we did not see any
extensive flooding or signs of flooding beyond where we have delineated. Considering the record rains
that we had in the area, this would represent a wetter than normal season and it did not have much
overbank flooding. Thompson Creek may have lower flows now than in the past much like Yelm Creek.
• Plants
Plants in the wetland are Reed canary grass (Phalaris arundanacea; FAW), Meadow foxtail
(Alopecurus pratense; FAC) and Velvet grass (Holcus lanatus; FAC) along the edge with some
with Creeping buttercup (Ranunculus repens; FAC) and some American speedwell (Veronica sp;
OBL).
• Soils
Soils in this wetland were a 10YR 3/1 mineral silt loam with a 10YR 5/2 with 10YR 5/8 mottles
due to the persistent permanent flooding in the area.
• Hydrology
Hydrology was found 2 inches above the surface.
Wetland C
Wetland C is a very small, excavated depression 363 square feet, however, the City of Yelm does not
have any threshold for regulated wetlands therefore we have provided an analysis for ratings and
buffers.
• Plants
Oregon ash (Fraxinus latifolia; FACW), Red alder (Alnus rubra; FAC), Salmonberry (Rubus
spectabilis; FAC), Small scale sedge (Carex leptipoda; FAC), slough sedge (Carex obnupta; OBL)
reed canary grass, and soft rush are the primary plants found in the wetland.
• Soils
Soils in Wetland A are a 10YR 3/1 gravelly loam underlain by a 10YR 4/2 gravelly loam with 10YR
4/6 redoximorphic features at 5%. The delineation of the wetland area closely follows the
topography of the site where the hydric soils are limited to the lower portion of the hillslope.
• Hydrology
Hydrology was found at 6 inches in this area.
5.0 WETLAND FUNCTIONAL VALUES
5.1 Wetland Functional Analysis Methodology
Wetlands, in general, provide many valuable ecological and social functions, including 1) stormwater
storage, 2) groundwater recharge, 3) erosion control, 4) water quality improvement, 5) natural
biological support, 6) overall habitat functions, 7) specific habitat functions, and 8) cultural and
socioeconomic value.
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Several procedures have been developed for assessing the importance and magnitude of functions and
include the Washington Functional Assessment Method (WAFAM) Wetland Evaluation Technique, the
Hydrogeomorphic Assessment Method the Habitat Evaluation Procedure (HEP), and numerous regional
and/or local procedures. However, none of these methods were consistent with the needs of this
project.
Wetland functions were also semi-quantitatively assessed using information gathered while performing
the ECY Wetland Rating System for Western Washington (Hruby, 2014). The scores from the analysis of
the wetland are found in Appendix H. This method is a comprehensive approach requiring substantial
data input and assessment of onsite and landscape functions. The descriptions of wetland functions and
the factors and parameters considered by that method are very helpful in interpreting the functioning of
the subject wetlands and buffer areas. The methodology is scientifically based, in that its application
requires a prior understanding of how wetlands function. Advanced experience, training and scientific
objectivity of a wetland scientist applying the method is essential for an accurate assessment. Alex
Callender has attended and received credit for the training in this method.
5.2 Wetland Functions
Wetland A
Wetland A is a an approximately 3.2 -acre / 138,751 sq feet onsite mostly undisturbed wetland that
flows from parcel # 21723140102 to parcel # 21723140000 and then continues offsite to the adjoining
parcel to the north.
• Water Quality
Wetland A is a shallow slope wetland 2-5% with some depressions and some dense vegetation
which is not near any septics or other pollution generating activities. There is a subdivision
above, but it is high above, and the stormwater is controlled as it is a new subdivision and there
are no outfalls in the immediate vicinity, so it does not appear to contribute to the wetland. The
wetland ultimately drains to the Nisqually River which has a TMDL in effect so overall it rates
high for water quality functions.
• Hydrologic
Wetland A is slope wetland that does not have many hydrologic functions, however there is
flooding on the Nisqually where it eventually drains so it rates moderate for this function. It is
not named in any plans and overall does not perform many hydrologic functions.
• Habitat
Wetland A has emergent, shrub scrub and forested vegetation. The forested vegetation has
shrubs and emergent in the understory, so it rates high for structure. It has one hydroperiod,
seasonally flooded. It has a moderate amount of diversity, and the interspersion of habitats is
high. It does not have much high intensity development within a kilometer and limited high
intensity agriculture so its function in the landscape is high. There are not any mapped priority
habitats or species nearby. There are no snags or logs, or riparian areas associated with this
wetland, so it rates moderately low for habitat.
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Wetland B
Wetland B is a relatively small riverine wetland that is within the Ordinary High Water Mark of the
stream.
• Water Quality
Wetland B does not have any depressions that hold water as it is mostly within the OHWM of
the stream. The wetland has 2/3 in tall reed canary grass so it rates moderate for this function.
• Hydrologic
The Wetland B has little hydrologic functions. There is little flooding on the Creek. The Wetland
does not have dense woody stems to attenuate the flood pulse. Wetland B is in the UGA, but it
is not down cut. It rates moderate for this function
• Habitat
Wetland B is somewhat diverse, it has some interspersion of habitat, and structure. The
wetland is in an area with little high-density development, so it rates high for its position in the
landscape.
Wetland B has no snags or logs, but it does have riparian functions and priority species like
Chinook and winter steelhead, so it rates high for this function.
Wetland C
Wetland C is the smallest wetland in the vicinity of the property and because of its proximity to Wetland
A it will carry many of the same functions, however it is a depressional wetland.
• Water Quality
Wetland C is a relatively small wetland with a highly constricted outlet. Wetland C has mineral
soils, and the vegetation is ungrazed. Wetland C does not discharge directly to a 303d listed
water body, but there is a TMDL on the Nisqually which is where the water flows so the wetland
rates high for this function.
• Hydrologic
Wetland C has a relatively high amount of live storage with a highly constricted outlet (No
culvert found).
Wetland C drains to areas of high ground water and is a depression below the average grade so
it may contribute to groundwater. The wetland would drain to the Nisqually River which suffers
periodic flooding even though it is not mentioned as important for flood storage.
• Habitat
Wetland C has relatively low habitat functions. It is forested with a shrub and emergent layer,
however, hydroperiod and no interspersion of habitats. low
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Wetland C is in an area of relatively low density, so it rates high. It is not very diverse and only
has one hydroperiod. There are no priority habitats or species that require this wetland as part
of their life cycle.
6.0 REGULATORY CONSIDERATIONS
6.1 City of Yelm Regulations
Wetlands
The City of Yelm Regulates Wetlands under YMC 18.21.060 Wetlands.
The City of Yelm Rates Wetlands using the Wetland Rating System for Western Washington (Hruby,
2014) as amended.
Wetland Categories and Scores
Wetland Category Overall Score Habitat Score Buffer
A IV 15 6(MHL) 50
B II 20 6 (LMH) 150
C IV 15 5(LHL) 50
YMC 18.21.6 states:
6.Wetland Buffers.
a.Standard Buffer Widths. The standard buffer widths presume the existence of a relatively intact
native vegetation community in the buffer zone adequate to protect the wetland functions and
values at the time of the proposed activity. If the vegetation is inadequate, then the buffer width
shall be increased, or the buffer should be planted to maintain the standard width. Required
standard wetland buffers, based on wetland category and land use intensity, are as follows:
ii.Category II:
High level of function for habitat (score of
29 – 36 points)
300
feet
Moderate level of function for habitat
(score of 20 – 28 points)
150
feet
High level of function for water quality
improvement and low for habitat (score
for water quality 24 – 32 points and
habitat less than 20 points)
100
feet
Not meeting any other characteristics 100
feet
iv.Category IV:
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Score for all three basic functions
less than 30 points
50 feet
18.21.5. states:
Category IV Wetlands. Activities and uses that result in unavoidable and necessary impacts may be permitted in
Category IV wetlands and associated buffers in accordance with an approved critical area report and mitigation
plan, and only if the proposed activity is the only reasonable alternative that will accomplish the applicant’s
objectives. Full compensation for the acreage and loss functions will be provided.
No impacts to wetlands area proposed.
Reductions
Reductions are allowed under YMC18.21.6. d. which states:
d. Wetland Buffer Width Averaging. The administrator may allow modification of the standard wetland buffer width in
accordance with an approved critical area report and the best available science on a case-by-case basis by averaging buffer
widths. Averaging of buffer widths may only be allowed where a qualified professional wetland scientist demonstrates that:
i. It will not reduce wetland functions or functional performance;
ii. The wetland contains variations in sensitivity due to existing physical characteristics or the character of the buffer varies in
slope, soils, or vegetation, and the wetland would benefit from a wider buffer in places and would not be adversely impacted
by a narrower buffer in other places;
iii. The total area contained in the buffer area after averaging is no less than that which would be contained within the standard
buffer; and
iv. The buffer width is not reduced to less than 75 percent of the standard width or 35 feet.
No Reductions are requested at this time.
Streams
The City of Yelm Regulates under 18.21.110 Fish and wildlife habitat conservation areas.
streams as fish and wildlife habitat conservation areas as follows:
A. Designation of Fish and Wildlife Habitat Conservation Areas.
1. Fish and wildlife habitat conservation areas are areas necessary for maintaining species in suitable habitats within their
natural geographic distribution so that isolated subpopulations are not created as designated by WAC 365-190-080(5). These
areas include:
a. Areas with which state or federally designated endangered, threatened, and sensitive species have a primary association;
i. Federally designated endangered and threatened species are those fish and wildlife species identified by the U.S. Fish and
Wildlife Service and the National Marine Fisheries Service that are in danger of extinction or threatened to become
endangered.
ii. State designated endangered, threatened, and sensitive species are those fish and wildlife species native to the state of
Washington identified by the Washington Department of Fish and Wildlife that are in danger of extinction, threatened to
become endangered, vulnerable, or declining and are likely to become endangered or threatened in a significant portion of
their range within the state without cooperative management or removal of threats.
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b. State Priority Habitats and Areas Associated with State Priority Species. Priority habitats and species are considered to be
priorities for conservation and management. Priority species require protective measures for their perpetuation due to their
population status, sensitivity to habitat alteration, and/or recreational, commercial, or tribal importance. Priority habitats are
those habitat types or elements with unique or significant value to a diverse assemblage of species. A priority habitat may
consist of a unique vegetation type or dominant plant species, a described successional stage, or a specific structural element.
Priority habitats and species are identified by the state Department of Fish and Wildlife.
c. Naturally Occurring Ponds under 20 Acres. Naturally occurring ponds are those ponds under 20 acres and their submerged
aquatic beds that provide fish or wildlife habitat, including those artificial ponds intentionally created from dry areas in order to
mitigate impacts to ponds. Naturally occurring ponds do not include ponds deliberately designed and created from dry sites,
such as canals, detention facilities, wastewater treatment facilities, farm ponds, temporary construction ponds, and landscape
amenities, unless such artificial ponds were intentionally created for mitigation.
d. Waters of the State. Waters of the state include lakes, rivers, ponds, streams, inland waters, underground waters, salt
waters, and all other surface waters and watercourses within the jurisdiction of the state of Washington.
e. Areas of Rare Plant Species and High-Quality Ecosystems. Areas of rare plant species and high-quality ecosystems are
identified by the Washington State Department of Natural Resources through the Natural Heritage Program.
f. Land useful or essential for preserving connections between habitat blocks and open spaces.
2. All areas within the city meeting one or more of these criteria, regardless of any formal identification, are hereby designated
critical areas and are subject to the provisions of this chapter and shall be managed consistent with the best available science.
3. Mapping. The approximate location and extent of habitat conservation areas are shown on the critical area maps adopted by
the city.
Thompson Creek
2. Riparian Habitat Areas. Unless otherwise allowed in this chapter, all structures and activities shall be located outside
of the riparian habitat area.
a. Establishment of Riparian Habitat Areas. Riparian habitat areas shall be established for habitats that include
aquatic and terrestrial ecosystems that mutually benefit each other and that are located adjacent to rivers,
perennial or intermittent streams, seeps, and springs.
b. A riparian habitat area width of 150 feet is established along Yelm Creek and Thompson Creek, both Type 5,
intermittent streams with low mass wasting potential as defined in WAC 222-16-031.
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Figure 4 - Wetland and Stream Buffers (Not a Survey)
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Table 2 - Summary of Wetlands and Streams on or in the Vicinity of the Subject Property
Wetland/Stream
Size Category STD Buffer Width (feet) Cowardin Class Comments On-site Off-site (estimated) City of Yelm Habitat Points Wetland A 3.18
acres 4.84
IV
6
(MHL)
50
ft
PEMC/PFOC
PSSC
No wetland
impacts
Wetland B/
Thompson
Creek
11,499 sq
ft/
475 lf
- II
/Type 5
6
(LMH) 150 ft/ 150 ft REMC
No wetland
/stream
impacts
Wetland C 363 sq ft N/A IV 5 (LHL) 50 ft PFOC No Impacts
FEMA Flood Zone
A FEMA flood zone exists on Thompson Creek. This flood zone is within the 150 – foot buffers of the
wetlands and stream. No development will occur in the flood zone.
6.2 Corps Regulations
Wetland A, B and C flow off site to the Nisqually and then to the Puget Sound, therefore it would be
maintained as a Water of the US and regulated under the Clean Water Act. No impacts are proposed to
Wetland A, B, or C or Thompson Creek.
6.3 Department of Ecology
Under RCW 90.48, the Washington Department of Ecology (DOE) reserves regulatory authority to
regulate “waters of the state” under Section 401 of the Clean Water Act. No wetland impacts are
proposed.
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7.0 WILDLIFE
7.1 Observed Wildlife Summary
The following is a list of observed and Agency discovered wildlife on and near the site.
Observed Federally listed/PHS Federally listed salmonids Wildlife observed during site
visit
Scrub jay None Chinook salmon In field
Columbia black tailed
deer
None Steelhead Trout In forest
Wildlife observed during the field investigations are typical of urban/suburban adapted species (Table
2). The European starling, possum, and other species adapted to urbanization may inhabit or visit the
site for food and shelter.
No other Federally listed, or priority species was observed on the subject property or near the site based
on the WDFW Priority Habitats and Species (PHS) and field observations during the reconnaissance and
delineation. During the limited duration of the site reconnaissance and delineation, no evidence of the
Federally listed Bald Eagle, Marbled Murrelet, or Spotted Owl was observed on-site.
No Federally listed salmonid species are known to occur on-site, based on the WDFW SalmonScape
database, the WDFW PHS database, and site reconnaissance.
No wildlife was observed on site during site visit.
8.0 PROPOSED PROJECT
8.1 Description
The project consists of a subdivision into 101 residential lots, Open space tracts A-H, and associated road
easements (See Site Plan).
8.2 Development Impacts
No impacts from development area expected.
8.3 Impact Avoidance and Minimization
The applicant has considered all the critical areas and avoided impacts to all wetlands, streams, and
their buffer to the fullest through careful planning and lot configuration to maintain critical areas and
their buffers.
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8.4 Minimization of Water Quality Impacts
Implementing water quality and sedimentation best management practices (BMPs) will act to minimize
sedimentation and protect water quality on-site and any bare areas will be planted with a cover crop.
Silt fences and straw waddles will be used where necessary. Splash blocks and infiltration galleries and
stormwater ponds will be used to reduce stormwater impacts from the residences.
9.0 SUMMARY AND CONCLUSIONS
Three wetlands and Type 5 stream were identified within 315 feet of the subject property. Wetland A is
a Category IV wetland maintaining a 50-foot buffer. Wetland B is a Category II wetland associated with
Thompson Creek and carrying a 150-foot buffer. Wetland C is a Category IV wetland with a fifty-foot
buffer. Thompson Creek is a type 5 stream with a 150 - foot buffer. This project will create 101 lots to
provide single-family homes for the future homeowners that exist in concert with the natural resources
of the City of Yelm.
10.0 LIMITATIONS
This report was created with care and best professional judgment using the current best available science,
but the report is subject to interpretation by local state and federal regulators who have the final
regulatory authority on wetlands and other boundary determinations. No outcomes are warranted by
this report.
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11.0 REFERENCE
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater
Habitats of the United States. U.S. Fish and Wildlife Service, Department of the Interior. FWSOBS-70/31.
Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-
87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Miss.
Federal Geographic Data Committee. 2013. Classification of wetlands and deepwater habitats of the
United States. FGDC-STD-004-2013. Second Edition. Wetlands Subcommittee, Federal Geographic Data
Committee and U.S. Fish and Wildlife Service, Washington, DC.
Hitchcock, C.L., and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press.
730 pp.
Hruby, T. (2014). Washington State Wetland Rating System for Western Washington: 2014 Update.
(Publication #14-06-029). Olympia, WA: Washington Department of Ecology.
Iowa State University. 1995. Hydric Soils of Washington State. U.S. Department of Agriculture, Natural
Resources Conservation Service. December 5.
Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016.
The National Wetland Plant List: 2016 wetland ratings.
Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X
Munsell Color. 1988. Munsell Soil Color Charts. Kollmorgen Instruments Corp., Baltimore, Maryland.
National Technical Committee for Hydric Soils (NTCHS). 2015. The hydric soil technical
standard. Hydric Soils Technical Note 11. https://www.nrcs.usda.gov/Internet/FSE_
DOCUMENTS/nrcs142p2_051608.pdf (accessed 19 September 2016).
The Summit at Thompson Creek Subdivision Critical Areas Report
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Land Services Northwest August 4, 2022
United States Department of Agriculture, Natural Resources Conservation
Service. 2006. Field Indicators of Hydric Soils in the United States, Version 7.0. G.W.
Hurt and L.M. Vasilas (eds.). USDA, NRCS, in cooperation with the National Technical
Committee for Hydric Soils.
U.S. Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0), ed. J. S. Wakeley, R.
W. Lichvar, and C. V. Noble. ERDC/EL TR-10-3. Vicksburg, MS: U.S. Army Engineer Research and
Development Center.
USDA, NRCS. 2016. The PLANTS Database (http://plants.usda.gov, 5/28/2017).
National Plant Data Team, Greensboro, NC 27401-4901 USA. http://plants.usda.gov
U.S. Fish and Wildlife Service. 1973. National Wetlands Inventory Map, Lacey Quadrangle.
Washington State Department of Ecology. 2014. Washington State Wetland Rating System for Western
Washington. Ecology Publication # 04-06-025. August.2014
Washington Department of Ecology. 2012. Water Quality Assessment for Washington. Accessed April
30, 2017. http//fortress.wa.gov/ecy/wqamapviewer/default.aspx?res-1280x720
Washington State Department of Natural Resources. 1994. Endangered, Threatened and Sensitive
Vascular Plants of Washington.
Washington State Department of Fish and Wildlife. 1999. Species of concern: State candidate species.
WDFW. Olympia, WA.
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Appendix A
Photographs
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Looking Toward Wetland B
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Wetland C
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Wetland A
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Appendix B
U.S. Fish and Wildlife Service
NWI MAP
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Appendix C
Thurston County NRCS
Soil Survey Map
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\
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Map Unit Legend
1%Dp Natural Resources Web Soil Survey 2/172022
3� Conservation SeMce National Cooperative Soil Survey Page 3 of 3
Map Unit Symbol
Map Unit Name
Acres In AOI
Percent of AOI
33
Everett very gravelly sandy
loam, 8 to 15 percent slopes
0.1
01%
65
McKenna gravelly sift loam, 0
to 5 percent slopes
3.8
7.3%
74
Nisqually loamy fine sand, 3 to
15 percent slopes
10.4
20.0%
111
Span away gravelly sandy
loam, 3 to 15 percent slopes
5.0
9.6%
127
Yelm fine sandy loam, 3 to 15
percent slopes
0.9
1.8%
1100
SteilacoolrfYelm complex, 0 to
2 percent slopes
12.3
23.7%
2101
MCChond EvereO complex, 3 t
15 percent slopes
19.5
37.4%
Totals for Area of Interest
52.1
100.0%
1%Dp Natural Resources Web Soil Survey 2/172022
3� Conservation SeMce National Cooperative Soil Survey Page 3 of 3
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Appendix D
Thurston County Stream/ Wetland and High
Groundwater Inventory
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Appendix E
USGS 7.5 Minute Topographic Map
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Appendix F
WDNR Forest Practices Activity Map
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Appendix G
WDFW Priority Habitats and Species and
Salmonscape
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Appendix H
NOAA Now Precipitation Data
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APPENDIX I
SOIL DATA SHEETS
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TP1
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): Concave Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett, Yelm NWI classification: none
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Thuja plicata
25 Y FAC
2.
3.
4.
25 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rubus spectabilis
35 Y FAC
2. Frangula purshiana
15 Y FAC
3. Symphoricarpos albus
5 N FACU
4.
5.
55 = Total Cover
Herb Stratum (Plot size: )
1. Rubus ursinus
25 Y FACU
2. Carex leptopoda
15 Y FAC
3. Polystichum munitum
20 Y FACU
4.
5.
6.
7.
8.
9.
10.
11.
60 = 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: 4 (A)
Total Number of Dominant
Species Across All Strata: 6 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 66 (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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-14 10YR2/2 100 Gravelly loam
14-18 10YR4/2 100 Gravelly loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators presen.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 14” Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No wetland hydrology indicators present within 12 inches.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TP2
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): concave Slope (%): 3
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes x No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Thuja plicata
20 Y FAC
2. Frangula purshiana
40 Y FAC
3.
4.
60 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rosa multiflora
30 Y FACU
2.
3.
4.
5.
30 = Total Cover
Herb Stratum (Plot size: )
1. Carex leptopoda
20 Y FAC
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
20 = 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: 3 (A)
Total Number of Dominant
Species Across All Strata: 4 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 75 (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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-4 10YR3/1 100 Silt loam
4-18 10YR4/2 95 10YR4/6 5 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: Hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches): 4”
Water Table Present? Yes x No Depth (inches): Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Wetland hydrology indicators present.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TP3
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): Concave Slope (%): 5
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rosa multiflora
75 Y FACU
2. Rubus spectabilis
15 N FAC
3. Cytisus scoparius
2 N UPL
4.
5.
92 = Total Cover
Herb Stratum (Plot size: )
1. Rubus ursinus
15 Y FACU
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
15 = 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: 0 (A)
Total Number of Dominant
Species Across All Strata: 2 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 0 (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 x
Remarks:<50% of dominant vegetation FAC or wetter
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP3
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-16 10YR3/1 100 Silt loam
16-18 10YR4/2 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No wetland hydrology indicators present.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TP4
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): none Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Yelm NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks: Area of roses with no hydro.
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Fraxinus latifolia
20 Y FACW
2. Populus balsamifera
20 Y FAC
3.
4.
40 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rosa pisocarpa
10 Y FAC
2. Symphoricarpos albus
10 Y FACU
3.
4.
5.
20 = Total Cover
Herb Stratum (Plot size: )
1. Rubus ursinus
20 Y FACU
2. Ranunculus repens
20 Y FAC
3. Phalaris arundinacea
35 Y FACW
4.
5.
6.
7.
8.
9.
10.
11.
75 = 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: 5 (A)
Total Number of Dominant
Species Across All Strata: 7 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 71 (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 x No
Remarks:>50% of dominant vegetation FAC or Wetter
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP 4
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-6 10YR3/1 100 Silt loam
6-18 10YR4/3 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No wetland hydrology indicators present.
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: The Summit at Thomson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TP5
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): none Slope (%): <1
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Yelm NWI classification: None
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Malus fusca
75 Y FACW
2.
3.
4.
75 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Spiraea douglasii
10 Y FACW
2.
3.
4.
5.
10 = Total Cover
Herb Stratum (Plot size: )
1. Rubus ursinus
25 Y FACU
2. Ranunculus repens
20 Y FACU
3. Phalaris arundinacea
35 Y FACW
4. Pteridium aquilinum
20 Y FACU
5.
6.
7.
8.
9.
10.
11.
100 = 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: 3 (A)
Total Number of Dominant
Species Across All Strata: 6 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 50 (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species 0 x 1 = 0
FACW species 120 x 2 = 240
FAC species 0 x 3 = 0
FACU species 65 x 4 = 260
UPL species 0 x 5 = 0
Column Totals: 185 (A) 500 (B)
Prevalence Index = B/A = 2.7
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 x No
Remarks:>50% Dominant vegetation FAC or Wetter
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP5
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-10 10YR3/2 100 Silt loam
10-18 10YR4/2 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydric soil indicators present.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TP6
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Yelm NWI classification: None
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes x No
Remarks: 100% of veg fac or wetter
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rosa pisocarpa
5 Y FAC
2.
3.
4.
5.
5 = Total Cover
Herb Stratum (Plot size: )
1. Phalaris arundinacea
75 Y FACW
2. Ranunculus repens
25 Y FAC
3.
4.
5.
6.
7.
8.
9.
10.
11.
100 = 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: 3 (A)
Total Number of Dominant
Species Across All Strata: 3 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP6
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR3/1 100 Silt loam
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)
x Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: Hydric soil indicators present. A11 F3
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 6” Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Wetland hydrology indicators present.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis State: WA Sampling Point: TPB1
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): none Slope (%): 0
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Nisqually loamy fine sand NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Agrostis capillaris
65 Y FAC
2. Leucanthemum vulgare
20 Y FACU
3. Festuca rubra
5 N FAC
4. Geranium molle
10 N UPL
5.
6.
7.
8.
9.
10.
11.
100 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 2 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 50 (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species 70 x 3 = 210
FACU species 20 x 4 = 80
UPL species 10 x 5 = 50
Column Totals: 100 (A) 340 (B)
Prevalence Index = B/A = 3.4
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 x
Remarks: Failed Prevalence
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPB1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-16 10YR3/2 100 Silt loam
16-18 10YR4/2 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No wetland hydrology indicators present.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 12.9.21
Applicant/Owner: Purvis
State: WA Sampling Point: TPB2
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): hillslope Local relief (concave, convex, none): Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Nisqually loamy fine sand
NWI classification: REMC
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes x No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Phalaris arundinacea
100 Y FACW
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
100 = 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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPB2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-16 10YR3/1 100 Silt loam
16-18 10YR4/2 90 10YR4/6 10 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: Hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 6” Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Wetland hydrology indicators present.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 5.26.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCC1
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Terrace Local relief (concave, convex, none): concave Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Yelm NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes x No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Alnus rubra
55 Y FAC
2. Frangula purshiana
20 Y FAC
3.
4.
60 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rosa multiflora
30 Y FACU
2. Rubus lacianatus
3.
4.
5.
30 = Total Cover
Herb Stratum (Plot size: )
1. Carex leptopoda
20 Y FAC
2. Athyrium Cyclosorum 30 Y FAC
3.
4.
5.
6.
7.
8.
9.
10.
11.
50 = 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: 5 (A)
Total Number of Dominant
Species Across All Strata: 5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:100% of Dominant Veg FAC or wetter.
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCC1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-6 10YR3/1 100 grlo loam
4-18 10YR5/2 95 10YR4/6 5 grloloam
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)
x Depleted Below Dark Surface (A11) x Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: Hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches): 4”
Water Table Present? Yes x No Depth (inches): Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Wetland hydrology indicators present.
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: The Summit at Thompson Crk
City/County: Thurston Sampling Date: 5.26.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCC2
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Terrace Local relief (concave, convex, none): concave Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Yelm NWI classification: None
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks: No indicators of wetlands found
VEGETATION – Use scientific names of plants.
(Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.Pseudotsuga menziesii
10 N FACU
2.Alnus rubra 55 Y FAC
3.
4.
60 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1.Symphoricarpus alba
30 Y FACU
2.
3.
4.
5.
30 = Total Cover
Herb Stratum (Plot size: )
1.Polysticum munitum 20 Y FACU
2.Rubus ursinus 15 Y FACU
3.
4.
5.
6.
7.
8.
9.
10.
11.
20 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 4 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 25 (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 x
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCC2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-6 10YR4/2 100 grlo loam
4-18 10YR4/3 95 1 grloloam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No Hydric soil indicators present.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No Wetland hydrology indicators present.
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: The Summit at Thompson Crk
City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCR1
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): concave Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification: REMC
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes X No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes X No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Hordeum brachyantherum
85 Y FACW
2. Geranium molle
5 N UPL
3. Hypericum perforatum
2 N FACU
4.
5.
6.
7.
8.
9.
10.
11.
92 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 1 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-12 10YR3/1 100 Silt loam
12-18 10YR5/2 90 10YR5/6 10
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 4” Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Lowest spot Hydro found in early growing season.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCR2
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): 1% Slope (%): 1
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Nisqually NWI classification: None
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Hordeum brachyantherum
70 Y FACW
2. Leucanthemum vulgare
15 N FACU
3. Festuca rubra
10 N FAC
4. Vicia americana
10 N FAC
5.
6.
7.
8.
9.
10.
11.
105 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 1 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks: 100% of veg FAC or Wetter
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR2/2 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks:No soil indicators found.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydro found.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCR3
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): convex Slope (%): 1
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Nisqually NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Cerastium arvense
10 N FACU
2. Festuca rubra
25 Y FAC
3. Hordeum brachyantherum
25 Y FACW
4. Leucanthemum vulgare
10 N FACU
5. Taraxacum officinale
2 N FACU
6. Lepidium campestre
20 Y FACU
7. Plantago lanceolata
5 N FACU
8.
9.
10.
11.
97 = 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: 2 (A)
Total Number of Dominant
Species Across All Strata: 3 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 66 (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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR3
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR3/1 100 Silt loam
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)
x Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: A12 Thick dark surface probably relect.
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydro or signs of hydro found.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCR4
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 Is the Sampled Area within a Wetland? Yes No
Wetland Hydrology Present? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Trifolium repens
55 FAC
2. Lepidium campestre
15 UPL
3. Geranium molle
20 UPL
4. Holcus lanatus
20 FAC
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:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR4
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR2/1 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCR5
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): flat Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification: None
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks: Area that showed on wetland layer as wetlands, but no hydrology found in two site visits
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Festuca rubra
65 Y FAC
2. Hordeum brachyantherum
15 N FACW
3. Dactylis glomerata
10 N FACU
4. Taraxacum officinale
2 N FACU
5. Leucanthemum vulgare
10 N FACU
6.
7.
8.
9.
10.
11.
102 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 1 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:>50 of dominant vegetation Fac or wetter
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR 5
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR3/1 100 Silt loam
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)
x Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks:Area of Hydric soils found
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydrology or signs of hydrology found.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Purvis State: WA Sampling Point: TPCR6
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): none Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Geranium molle
35 Y UPL
2. Trifolium repens
15 N FAC
3. Festuca rubra
10 N FAC
4. Hordeum brachyantherum
10 N FACW
5. Holcus lanatus
35 Y FAC
6.
7.
8.
9.
10.
11.
105 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 2 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 50 (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species 0 x 1 = 0
FACW species 10 x 2 = 20
FAC species 60 x 3 = 180
FACU species 0 x 4 = 0
UPL species 35 x 5 = 175
Column Totals: 105 (A) 375 (B)
Prevalence Index = B/A = 3,5
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 x
Remarks:Failed Prevalence Test
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR 6
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR3/1 100 Silt loam
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)
x Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: A12 thick dark surface. Previous flooding?
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydrology or indicators of hydrology found3.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 4.25.2022
Applicant/Owner: Puvis State: WA Sampling Point: TPCR7
Investigator(s): Alex Callender Section, Township, Range: S23171E
Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): concave Slope (%): 1
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Nisqually NWI classification: REMC
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes x No
Remarks:All indicators found
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: ) 0
1. Hordeum brachyantherum
65 Y FACW
2. Ranunculus repens
25 Y FAC
3. Taraxacum officinale
2 N FACU
4. Festuca rubra
10 N FAC
5.
6.
7.
8.
9.
10.
11.
102 = 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: 2 (A)
Total Number of Dominant
Species Across All Strata: 2 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TPCR7
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-18 10YR2/1 100 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 2”x Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: All indicators for wetland found.
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 2.12.22
Applicant/Owner: Purvis State: WA Sampling Point: TP1- 21723140102
Investigator(s): Alex Callender Section, Township, Range: 23, 17, 1E
Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): Concave Slope (%): 2
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Amelanchier alnifolia
5 Y FACU
2.
3.
4.
5.
2 = Total Cover
Herb Stratum (Plot size: )
1. Dactylis glomerata
75 Y FACU
2. Agrostis capillaris
5 N FAC
3. Rubus ursinus
25 Y FACU
4.
5.
6.
7.
8.
9.
10.
11.
105 = 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: 0 (A)
Total Number of Dominant
Species Across All Strata: 3 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 0 (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 x
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP 1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-16 10YR3/2 100 Silt loam
16-18 10YR5/2 95 10YR4/6 5 Silt loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No indicators found
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 14” Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes x No Depth (inches): 13
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydrology within 12 inches.
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: Mill Pond City/County: Thurston Sampling Date: 2.12.22
Applicant/Owner: Mill Pond Development, LLC State: WA Sampling Point: TP2- 21723140102
Investigator(s): Alex Callender Section, Township, Range: 23, 17, 1E
Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes x No
Wetland Hydrology Present? Yes x No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Frangula purshiana
20 Y FAC
2.
3.
4.
20 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Rubus spectabilis
85 Y FAC
2. Rubus armeniacus
5 N FAC
3.
4.
5.
90 = 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: 2 (A)
Total Number of Dominant
Species Across All Strata: 2 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:
The Summit at Thompson Crk City/County:
wner: Purvis
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-8 10YR3/2 100 Silt loam
8-18 10YR5/2 90 10Y5/6 10 Silt loam
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)
x Depleted Below Dark Surface (A11) x Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: F3 , A11 met
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
x High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along
Living Roots (C3) x Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes x No Depth (inches): 2” Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Hyrdo witiin 12 inches of surface present
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: The Summit at Thompson Crk City/County: Thurston Sampling Date: 2.12.22
Applicant/Owner: State: WA Sampling Point: TP3- 21723140102
Investigator(s): Alex Callender Section, Township, Range: 23, 17, 1E
Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): Slope (%):
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes No
x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.
2.
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Festuca rubra
100 Y FAC
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
100 = 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: 1 (A)
Total Number of Dominant
Species Across All Strata: 1 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks:Monotypic grass not a very good indicator, but 100 percent of dominant veg fac or wetter.
Purvis
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP3
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-12 manure
12-18 10YR3/4 100 Gravelly loam
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
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No hydrology or signs of hydrology found.
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: The Summit At Thompson Crk City/County: Thurston Sampling Date: 5.26.22
Applicant/Owner: State: WA Sampling Point: TPBB2
Investigator(s): Alex Callender Section, Township, Range: 23, 17, 1E
Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): Slope (%): 3
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x
Hydric Soil Present? Yes No x Is the Sampled Area within a Wetland? Yes No x
Wetland Hydrology Present? Yes No x
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Acer macrophyllum 15 Y FACU
2. Frangula purrshiana
20 Y FAC
3.
4.
35 = Total Cover
Sapling/Shrub Stratum (Plot size: )
1. Oemleria cerasiformis 20 Y FACU
2. Ilex aquilinum 5 Y FACU
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Pteridium aquillinum 15 Y FACU
2. Mahonia nervosa 10 N FACU
3. Polysticum munitum 20 Y FACU
4. Rubus ursinus 15 Y FACU
5. Asarum canadense 2 N NR
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: 1 (A)
Total Number of Dominant
Species Across All Strata: 7 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 14 (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 x
Remarks: 100% FAC or wetter
Purvis
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP BB2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-3 10YR 3/3 100 GrLo
3-18 10YR 4/2 100 GrLO
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)
x Depleted Below Dark Surface (A11) x Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes No x
Depth (inches):
Remarks: No hydric soil indicators
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No x Depth (inches):
Water Table Present? Yes No x Depth (inches): Wetland Hydrology Present? Yes No x
Saturation Present?
(includes capillary fringe) Yes No x Depth (inches):
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: No Hydro within 12 inches of surface found or indicators of hydro.
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: The Summit At Thompson Crk City/County: Thurston Sampling Date: 5.26.22
Applicant/Owner: State: WA Sampling Point: TPBB1
Investigator(s): Alex Callender Section, Township, Range: 23, 17, 1E
Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): Slope (%): 3
Subregion (LRR): 2 Lat: Long: Datum: Wgs84
Soil Map Unit Name: Everett NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes x No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes x 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 x No
Hydric Soil Present? Yes x No Is the Sampled Area within a Wetland? Yes No
Wetland Hydrology Present? Yes x No
Remarks:
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size: )
Absolute
% Cover
Dominant
Species?
Indicator
Status
1. Alnus rubra 55 Y FAC
2. Frangula purrshiana
20 Y FAC
3.
4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1. Athyrium cyclosorum 30 Y FAC
2. Carex leptipodium 5 Y FAC
3. Phalaris arunanacea 5 Y FAC
4. Rubus lacianatus 5 Y FAC
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: 6 (A)
Total Number of Dominant
Species Across All Strata: 6 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (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 x No
Remarks: 100% FAC or wetter
Purvis
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point: TP BB1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix Redox Features
Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks
0-3 10YR 3/1 100 GrLo
3-16 10YR 4/2 90 10yr 4/6 10 GrLO
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)
x Depleted Below Dark Surface (A11) x Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4) Redox Depressions (F8)
Restrictive Layer (if present):
Type: Hydric Soil Present? Yes x No
Depth (inches):
Remarks: A11 and F3 indicators found
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
MLRA 1, 2, 4A, and 4B)
Water-Stained Leaves (B9) (MLRA 1, 2,
4A, and 4B)
High Water Table (A2) Salt Crust (B11) Drainage Patterns (B10)
Saturation (A3) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Water Marks (B1) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Sediment Deposits (B2)
Oxidized Rhizospheres along Living
Roots (C3) Geomorphic Position (D2)
Drift Deposits (B3) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Algal Mat or Crust (B4)
Recent Iron Reduction in Tilled
Soils (C6) FAC-Neutral Test (D5)
Iron Deposits (B5)
Stunted or Stressed Plants (D1)
(LRR A) Raised Ant Mounds (D6) (LRR A)
Surface Soil Cracks (B6) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Inundation Visible on Aerial Imagery (B7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes x No Depth (inches): 6 Wetland Hydrology Present? Yes x No
Saturation Present?
(includes capillary fringe) Yes No Depth (inches): 5
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Hydro within 12 inches of surface found.
The Summit at Thompson Creek Subdivision Critical Areas Report
48
Land Services Northwest August 4, 2022
APPENDIX J
WETLAND RATING FORMS FOR WESTERN WA
1
1
I
I
I
1
1
f\
4
I�
I
1
Land Use Calculations
ACRES %
1KM 1094
Wetland A 8
1KM-WetA 1086 100
High Intensity 225 0.205667 20.56673
Relatively Undisturbed 292 0.26691 26.69104
Low Medium Use 577 0.527422 52.74223
Accessible Habitat 846.0334 0.773339 77.33395
WetA 8
Access Hab- WetA 838.0334
RU 225 0.205667 20.56673
Low/Medium LU 482.0334 0.440616 44.06155
High Intensity 139 0.127057 12.70567
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303d Water Quality Atlas Map
Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS,FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, EsriJapan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and
June 9, 2022
0 1 20.5Miles
K
Assessed Water/SedimentWater
Category 5 - 303d
Category 4C
Category 4B
Category 4A
Category 2
Category 1
Sediment
Category 5 - 303d
Category 4C
Category 4B
Category 4A
Category 2
Category 1
ParcelsParcel boundary
Subbasins (12 digit HUCs)HUC boundary
W t0 � yl
W r'
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O,. RATHQUN:.:
EL CAMI,
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it
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OUNTAIN JEWpD
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Wetland name or number WETLAND A
Name of wetland (or ID #):Date of site visit:12.10.2021
Rated by Trained by Ecology? Yes No Date of training Dec-13
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 M 9 = H, H, H
L H 8 = H, H, M
M L Total 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
2018 Geodata Aerial
WETLAND A
Alex Callender
Coastal Lagoon
Interdunal
Value
Score Based on
Ratings 5 4 6 15
H
Improving
Water Quality
LSite Potential
Landscape Potential L
FUNCTION
None of the above
CHARACTERISTIC Category
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Habitat
Slope
RATING SUMMARY – Western Washington
List appropriate rating (H, M, L)
Hydrologic
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
D 1.1, D 4.1
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
D 3.3
To answer questions:
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
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
L 1.2
L 2.2
L 3.1, L 3.2
L 3.3
H 2.1, H 2.2, H 2.3
R 3.1
R 3.2, R 3.3
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
S 4.1
S 2.1, S 5.1
To answer questions:
H 1.1, H 1.4
H 1.2
S 1.3
H 2.1, H 2.2, H 2.3
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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 3.1, S 3.2
S 3.3
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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.
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.
HGM Classification of Wetland in Western Washington
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.
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;
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,
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.
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 4 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
Riverine
ESTUARINE
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
being rated
Slope + Riverine
Slope + Depressional
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.
Salt Water Tidal Fringe and any other
class of freshwater wetland
HGM class to
use in rating
Riverine
Depressional
Lake Fringe
Depressional
Depressional
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.
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.
Treat as
Slope + Lake Fringe
Depressional + Riverine along stream
within boundary of depression
Depressional + Lake Fringe
Riverine + Lake Fringe
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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 4
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 2
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
SLOPE WETLANDS
S 2.2. Are there other sources of pollutants coming into the wetland that are
not listed in question S 2.1?0
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 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
Water Quality Functions - Indicators that the site functions to improve water quality
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
0
2
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.
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 ?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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 1
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
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)1
S 6.0. Are the hydrologic functions provided by the site valuable to society?
0
S 6.2. Has the site been identified as important for flood storage or flood
conveyance in a regional flood control plan?0
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?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 9 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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.
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
4
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.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
3
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 ).
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 12 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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 13
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:
20 % undisturbed habitat + (44 % moderate & low intensity land uses / 2 ) = 42%
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:
26 % undisturbed habitat + (52 % moderate & low intensity land uses / 2 ) = 52%
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
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata )
4
It is a Wetland of High Conservation Value as determined by the
Department of Natural Resources
0
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 .
It provides habitat for Threatened or Endangered species (any plant
or animal on the state or federal lists)
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 )
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 13 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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
watershed plan
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 14 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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.
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 ).
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 >
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.
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.
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.
WDFW Priority Habitats
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 ).
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 15 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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 16 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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.
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
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.
Cat. II
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
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,
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 17 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
Yes = Is a Category I bog No = Is not a bog
p ( ) p , p ,
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 18 WSDOT Adapted Form - January 14, 2015
Wetland name or number WETLAND A
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
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 )
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.
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.
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?
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).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 19 WSDOT Adapted Form - January 14, 2015
Land Use Calculations
ACRES %
1KM 801
Wetland B 0.11
1KM-WetB 800.89 100
High Intensity 225 0.280899 28.08989
Relatively Undisturbed 84 0.104869 10.48689
Low Medium Use 492 0.614232 61.42322
Accessible Habitat 535 0.667915 66.79151
Wetland B 0.11
Access Hab- WetB 534.89
RU 66 0.082397 8.2397
Low/Medium LU 292 0.364544 36.45443
High Intensity 177 0.220974 22.09738
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Wetland name or number B
Name of wetland (or ID #):Date of site visit:2/11/2022
Rated by Trained by Ecology? Yes No Date of training Dec-13
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 II (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
X Category II - Total score = 20 - 22 function based
Category III - Total score = 16 - 19 on three
Category IV - Total score = 9 - 15 ratings
(order of ratings
is not
important )
M L 9 = H, H, H
M M 8 = H, H, M
M H Total 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
2017 NAIP
Riverine & Fresh Water Tidal
Coastal Lagoon
Interdunal
Value
Score Based on
Ratings 8 6 6 20
H
Improving
Water Quality
MSite Potential
Landscape Potential
Habitat
H
FUNCTION
CHARACTERISTIC Category
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
RATING SUMMARY – Western Washington
List appropriate rating (H, M, L)
Hydrologic
Wetland B
Alexander Callender
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
XNone of the above
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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 Cowardin
Hydroperiods Hydro
Ponded depressions Ponded areas
Boundary of area within 150 ft of the wetland (can be added to another figure )Cover of trees
Plant cover of trees, shrubs, and herbaceous plants
Width of unit vs. width of stream (can be added to another figure )WOU
Map of the contributing basin Contributing Basi
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)303d
Screen capture of list of TMDLs for WRIA in which unit is found (from web)TMDL
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
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
R 3.2, R 3.3
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
D 1.1, D 4.1
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
D 3.3
To answer questions:
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
R 1.2, R 4.2
R 4.1
Ikm
L 2.2
L 3.1, L 3.2
L 3.3
H 2.1, H 2.2, H 2.3
R 3.1
R 2.2, R 2.3, R 5.2
H 2.1, H 2.2, H 2.3
L 1.2
To answer questions:
H 1.1, H 1.4
H 1.2
S 1.3
H 2.1, H 2.2, H 2.3
S 4.1
S 2.1, S 5.1
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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 3.1, S 3.2
S 3.3
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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 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;
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).
HGM Classification of Wetland in Western Washington
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.
At least 30% of the open water area is deeper than 6.6 ft (2 m).
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.
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.
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding
from that stream or river,
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
NOTES and FIELD OBSERVATIONS:
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.
Salt Water Tidal Fringe and any other
class of freshwater wetland
HGM class to
use in rating
Riverine
Depressional
Lake Fringe
Depressional
Depressional
Riverine
Treat as
ESTUARINE
Slope + Lake Fringe
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.
being rated
Slope + Riverine
Slope + Depressional
Depressional + Riverine along stream
within boundary of depression
Depressional + Lake Fringe
Riverine + Lake Fringe
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.
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.
HGM classes within the wetland unit
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Depressions cover > 3/4 area of wetland points = 8
Depressions cover > ½ area of wetland points = 4
Depressions present but cover < ½ area of wetland points = 2
No depressions present points = 0
Trees or shrubs > 2/3 area of the wetland points = 8
Trees or shrubs > 1/3 area of the wetland points = 6
Herbaceous plants (> 6 in high) > 2/3 area of the wetland points = 6
Herbaceous plants (> 6 in high) > 1/3 area of the wetland points = 3
Trees, shrubs, and ungrazed herbaceous < 1/3 area of the wetland points = 0
Total for R 1 Add the points in the boxes above 6
Rating of Site Potential If score is: 12 - 16 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
R 2.1. Is the wetland within an incorporated city or within its UGA?Yes = 2 No = 0 2
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 1 No = 0
Other Sources Yes = 1 No = 0
Total for R 2 Add the points in the boxes above 3
Rating of Landscape Potential If score is: 3 - 6 = H 1 or 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 R 3 Add the points in the boxes above 3
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
R 3.0. Is the water quality improvement provided by the site valuable to society?
R 1.1. Area of surface depressions within the Riverine wetland that can trap sediments during a
flooding event:
R 1.2. Structure of plants in the wetland (areas with >90% cover at person height, not Cowardin
classes)
R 2.0. Does the landscape have the potential to support the water quality function of the site?
R 2.2. Does the contributing basin to the wetland include a UGA or
incorporated area?
0
0
0
6
R 3.2. Is the wetland along a stream or river that has TMDL limits for
nutrients, toxics, or pathogens?
R 2.3. Does at least 10% of the contributing basin contain tilled fields,
pastures, or forests that have been clearcut within the last 5 years?
R 2.5. Are there other sources of pollutants coming into the wetland that are
not listed in questions R 2.1 - R 2.4?
1
R 2.4. Is > 10% of the area within 150 ft of the wetland in land uses that
generate pollutants?0
0
R 3.1. Is the wetland along a stream or river that is on the 303(d) list or on a
tributary that drains to one within 1 mi?1
R 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
drainage in which the unit is found )
2
Water Quality Functions - Indicators that the site functions to improve water quality
R 1.0. Does the site have the potential to improve water quality?
RIVERINE AND FRESHWATER TIDAL FRINGE WETLANDS
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
R 4.1. Characteristics of the overbank storage the wetland provides:
If the ratio is more than 20 points = 9
If the ratio is 10 - 20 points = 6
If the ratio is 5 - < 10 points = 4
If the ratio is 1 - < 5 points = 2
If the ratio is < 1 points = 1
Forest or shrub for > 1/3 area OR emergent plants > 2/3 area points = 7
Forest or shrub for > 1/10 area OR emergent plants > 1/3 area points = 4
Plants do not meet above criteria points = 0
Total for R 4 Add the points in the boxes above 6
Rating of Site Potential If score is: 12 - 16 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
R 5.1. Is the stream or river adjacent to the wetland downcut?Yes = 0 No = 1 0
R 5.2. Does the up-gradient watershed include a UGA or incorporated area?Yes = 1 No = 0 1
R 5.3 Is the up-gradient stream or river controlled by dams?Yes = 0 No = 1 0
Total for R 5 Add the points in the boxes above 1
Rating of Landscape Potential If score is: 3 = H 1 or 2 = M 0 = L Record the rating on the first page
R 6.1. Distance to the nearest areas downstream that have flooding problems?
Choose the description that best fits the site.
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 R 6 Add the points in the boxes above 1
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
2
R 4.2. Characteristics of plants that slow down water velocities during floods: Treat large woody
debris as forest or shrub. Choose the points appropriate for the best description (polygons need
to have >90% cover at person height. These are NOT Cowardin classes ).4
RIVERINE AND FRESHWATER TIDAL FRINGE WETLANDS
Estimate the average width of the wetland perpendicular to the direction of the flow and the width
of the stream or river channel (distance between banks). Calculate the ratio: (average width of
wetland)/(average width of stream between banks).
R 5.0. Does the landscape have the potential to support the hydrologic functions of the site?
R 6.0. Are the hydrologic functions provided by the site valuable to society?
The sub-basin immediately down-gradient of the wetland has
flooding problems that result in damage to human or natural
resources (e.g., houses or salmon redds)
1
Hydrologic Functions - Indicators that site functions to reduce flooding and stream erosion
R 4.0. Does the site have the potential to reduce flooding and erosion?
R 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 9 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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
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.
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 ).
1
Count the number of plant species in the wetland that cover at least 10 ft2.
These questions apply to wetlands of all HGM classes.
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
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.
Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
1
None = 0 points Low = 1 point
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 12 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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:
7 % undisturbed habitat + (37 % moderate & low intensity land uses / 2 ) = 25.5%
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:
10 % undisturbed habitat + (39 % moderate & low intensity land uses / 2 ) = 29.5%
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 3
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
2
1
0
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 )
It is a Wetland of High Conservation Value as determined by the
Department of Natural Resources
2
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata )
2
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
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 .
It provides habitat for Threatened or Endangered species (any plant
or animal on the state or federal lists)
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 13 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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
watershed plan
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 14 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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.
WDFW Priority Habitats
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 ).
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.
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/
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 ).
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 >
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.
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 15 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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 16 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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.
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
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,
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 17 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Yes = Is a Category I bog No = Is not a bog
p ( ) p , p ,
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 18 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
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?
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.
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.
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).
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).
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 19 WSDOT Adapted Form - January 14, 2015
0
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Land Use Calculations
ACRES %
1KM 1094
1KM 782
WetC 0.01
1KM-WetC 781.99 100
High Intensity 145 0.132541 13.25411
Relatively Undisturbed 235 0.214808 21.4808
Low Medium Use 401.99 0.36745 36.74497
Accessible Habitat 617 0.563985 56.39854
WetA 0.01
Access Hab- WetC 616.99
RU 112 0.102377 10.23766
Low/Medium LU 366 0.334552 33.45521
High Intensity 139 0.127057 12.70567
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Wetland name or number Wetland C
Name of wetland (or ID #):Date of site visit:5/26//2022
Rated by Trained by Ecology? Yes No Date of training Dec-13
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
M L Total 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
Depressional & Flats
RATING SUMMARY – Western Washington
List appropriate rating (H, M, L)
HydrologicImproving
Water Quality
MSite Potential
Landscape Potential
Habitat
L
FUNCTION
Wetland C
Alex Callender
2017 NAIP
Coastal Lagoon
Interdunal
Value
Score Based on
Ratings 6 4 5 15
H
CHARACTERISTIC Category
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 1 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
XNone of the above
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure #
Cowardin plant classes Cowardin
Hydroperiods Hydro
Location of outlet (can be added to map of hydroperiods )Outlet
Boundary of area within 150 ft of the wetland (can be added to another figure )150ft
Map of the contributing basin 303d
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)303d
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
1KM
S 4.1
S 2.1, S 5.1
To answer questions:
H 1.1, H 1.4
H 1.2
S 1.3
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2
L 3.3
H 2.1, H 2.2, H 2.3
R 3.1
R 3.2, R 3.3
To answer questions:
L 1.1, L 4.1, H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
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
L 1.2
L 2.2
D 1.1, D 4.1
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
D 3.3
To answer questions:
H 1.1, H 1.4
To answer questions:
D 1.3, H 1.1, H 1.4
D 1.4, H 1.2
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 3 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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 3.1, S 3.2
S 3.3
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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.
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.
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;
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,
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.
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.
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 5 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
NOTES and FIELD OBSERVATIONS:
Salt Water Tidal Fringe and any other
class of freshwater wetland
HGM class to
use in rating
Riverine
Depressional
Lake Fringe
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.
Riverine
Treat as
ESTUARINE
Slope + Lake Fringe
Depressional + Riverine along stream
within boundary of depression
Depressional + Lake Fringe
Riverine + Lake Fringe
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
being rated
Slope + Riverine
Slope + Depressional
Depressional
Depressional
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.
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.
3
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 6 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 7 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
D 1.1. Characteristics of surface water outflows from the wetland:
points = 3
points = 2
points = 1
points = 1
Yes = 4 No = 0
Wetland has persistent, ungrazed, plants > 95% of area points = 5
Wetland has persistent, ungrazed, plants > ½ of area points = 3
Wetland has persistent, ungrazed plants > 1/10 of area points = 1
Wetland has persistent, ungrazed plants < 1/10 of area points = 0
D 1.4. Characteristics of seasonal ponding or inundation:
This is the area that is ponded for at least 2 months. See description in manual.
Area seasonally ponded is > ½ total area of wetland points = 4
Area seasonally ponded is > ¼ total area of wetland points = 2
Area seasonally ponded is < ¼ total area of wetland points = 0
Total for D 1 Add the points in the boxes above 7
Rating of Site Potential If score is: 12 - 16 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
D 2.1. Does the wetland unit receive stormwater discharges?Yes = 1 No = 0 0
Yes = 1 No = 0
D 2.3. Are there septic systems within 250 ft of the wetland?Yes = 1 No = 0 0
Source Yes = 1 No = 0
Total for D 2 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 3 or 4 = H 1 or 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 D 3 Add the points in the boxes above 3
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
0
0
Water Quality Functions - Indicators that the site functions to improve water quality
D 1.0. Does the site have the potential to improve water quality?
2
Wetland has an unconstricted, or slightly constricted, surface outlet
that is permanently flowing
Wetland has an intermittently flowing stream or ditch, OR highly
constricted permanently flowing outlet.
Wetland is a depression or flat depression (QUESTION 7 on key)
with no surface water leaving it (no outlet).
Wetland is a flat depression (QUESTION 7 on key), whose outlet is
a permanently flowing ditch.
0
D 2.0. Does the landscape have the potential to support the water quality function of the site?
DEPRESSIONAL AND FLATS WETLANDS
D 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 )?
D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic
(use NRCS definitions ).
D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or
Forested Cowardin classes):
D 2.4. Are there other sources of pollutants coming into the wetland that are
not listed in questions D 2.1 - D 2.3?
D 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?
D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that
generate pollutants?
D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list?
D 3.0. Is the water quality improvement provided by the site valuable to society?
1
0
2
0
5
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 8 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 9 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
D 4.1. Characteristics of surface water outflows from the wetland:
points = 4
points = 2
points = 1
points = 0
Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7
Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5
Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3
The wetland is a “headwater” wetland points = 3
Wetland is flat but has small depressions on the surface that trap water points = 1
Marks of ponding less than 0.5 ft (6 in)points = 0
The area of the basin is less than 10 times the area of the unit points = 5
The area of the basin is 10 to 100 times the area of the unit points = 3
The area of the basin is more than 100 times the area of the unit points = 0
Entire wetland is in the Flats class points = 5
Total for D 4 Add the points in the boxes above 5
Rating of Site Potential If score is: 12 - 16 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
D 5.1. Does the wetland unit receive stormwater discharges?Yes = 1 No = 0 0
D 5.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate excess runoff?
Yes = 1 No = 0
Yes = 1 No = 0
Total for D 5 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 3 = H 1 or 2 = M 0 = L Record the rating on the first page
points = 2
points = 1
Flooding from groundwater is an issue in the sub-basin.points = 1
points = 0
There are no problems with flooding downstream of the wetland.points = 0
DEPRESSIONAL AND FLATS WETLANDS
D 6.0. Are the hydrologic functions provided by the site valuable to society?
The wetland captures surface water that would otherwise flow down-gradient into areas
where flooding has damaged human or natural resources (e.g., houses or salmon redds):
Flooding occurs in a sub-basin that is immediately down-
gradient of unit.
Surface flooding problems are in a sub-basin farther down-
gradient.
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation
D 4.0. Does the site have the potential to reduce flooding and erosion?
2
Wetland is a depression or flat depression with no surface water
leaving it (no outlet)
Wetland has an unconstricted, or slightly constricted, surface outlet
that is permanently flowing
Wetland has an intermittently flowing stream or ditch, OR highly
constricted permanently flowing outlet
Wetland is a flat depression (QUESTION 7 on key), whose outlet is
a permanently flowing ditch
3
D 5.0. Does the landscape have the potential to support hydrologic function of the site?
0
0
D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human
land uses (residential at >1 residence/ac, urban, commercial, agriculture, etc.)?
The existing or potential outflow from the wetland is so constrained
by human or natural conditions that the water stored by the wetland
cannot reach areas that flood. Explain why
1
0
D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of
the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry,
the deepest part.
D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of
upstream basin contributing surface water to the wetland to the area of the wetland unit itself.
D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best
matches conditions around the wetland unit being rated. Do not add points. Choose the highest
score if more than one condition is met.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 10 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Yes = 2 No = 0
Total for D 6 Add the points in the boxes above 1
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
0D 6.2. Has the site been identified as important for flood storage or flood
conveyance in a regional flood control plan?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 11 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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.
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
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.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row are
HIGH = 3 points
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 ).
2
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 12 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 13 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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 4
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:
14 % undisturbed habitat + (46 % moderate & low intensity land uses / 2 ) = 37%
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:
30 % undisturbed habitat + (51 % moderate & low intensity land uses / 2 ) = 55.5%
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
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 .
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
0
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata )
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 )
1
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
It has been categorized as an important habitat site in a local or
regional comprehensive plan, in a Shoreline Master Plan, or in a
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 14 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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
watershed plan
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 15 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/
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.
WDFW Priority Habitats
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 ).
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.
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.
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 ).
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 >
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 16 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are
addressed elsewhere.
12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 17 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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.
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation
Value and listed it on their website?
Has the WA Department of Natural Resources updated their website to include the list
of Wetlands of High Conservation Value?
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,
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
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.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 18 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
Yes = Is a Category I bog No = Is not a bog
p ( ) p , p ,
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 19 WSDOT Adapted Form - March 2, 2015
Wetland name or number Wetland C
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
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 )
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 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.
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?
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015 20 WSDOT Adapted Form - March 2, 2015