HomeMy WebLinkAboutWetland Assessment 902231004
DISCOVERY BAY WETLANDS
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WETLAND ASSESSMENT REpORT &
CONCEPTUAL MITIGATIONPROPOSAL
April 2007
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Prepared for:
North Olympic Salmon Coalition
PO Box 699
Port Townsend W A 98368
Prepared by:
Pacific Rim Soil & Water, Inc.
1220 East Fourth Avenue
Olympia W A 98506.---- .....
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OCT - 4 2007
PACIFIC RI~1 SOIL & WATER, INC.
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LISA PALAZZI
1220 EAST FOURTH AVENUE
OLYMPIA, W A 98506
"OICE:(360)-236-1899
FAX: (360)-236-7813
North Olympic Salmon Coalition
Rebecca Benjamin, Project Manager
PO Box 699
Port Townsend, WA 98368
April 6, 2007
Report File Number:
Report Subject:
Location:
W06-0095
Wetland assessment report and conceptual wetland mitigation proposal.
The study site is composed of two main study site areas (several legal
parcels owned by WFDW). The North Site is an old abandoned lumber
mill property, located at the southwest end of Discovery Bay, in Jefferson
County, Washington. The South Site is located on agricultural land lying
south of Highway 101 at the same location. The general area can be
described as lying in or near Section 23, Township 29N, Range 2W.
INTRODUCTION
An onsite wetland assessment and associated delineation was carried out by Lisa Palazzi and Daniel
Ufuar (wetland scientist) on December 14,2006, and December 20,2006, at the property described
above, located at the south end of Discovery Bay, in Jefferson County, Washington. The purpose of
this work is to provide information to support a proposal to restore and create estuary wetlands,
designed to provide habitat for native salmonid species that use the Salmon Creek drainage system.
The property owner is the Washington Dept ofFish and Wildlife (WDFW); the project manager is the
North Olympic Salmon Coalition (NOSe).
Because there are activities proposed in wetlands, this work will require a JARP A review process, and
is assumed to fall under a Nationwide 27 Pennit (stream and wetland restoration) unless the COE
detennines otherwise.
Please note that we provided an earlier preliminary draft report to provide details for the JARP A
process. But this final draft of the wetlands report includes other information about wetland conditions
and infonnation that may be used to better manage to long-tenn project.
OCT pag~
WETLAND REGULATIONS
The following overview of wetland regulations is provided for your general information. It is
intended to provide a framework to help one be aware of situations of overlapping authority.
Local Wetland Regulations: JetTerson County
To qualify as a regulated wetland in Jefferson County, an area must meet criteria defined in the
Manual For Identifying and Delineating Wetlands adopted by the State Department of Ecology
and written into state law pursuant to RCW 90.58.380 (i.e., the 1987 Army Corps of Engineers
Wetlands Delineation Manual, Technical Report Y-87-1, and all subsequent Regulatory Guidance
Letters). Those criteria require that an area must 1) predominantly support wetland vegetation, 2)
must have hydric soils, and 3) must have wetland hydrology characteristics defined for the onsite
soil type - in this case, evidence or observation of a long-duration water table at 12 inches or less
depth.
All Category I wetlands, and Category II wetlands less than 2,500 square feet (approximately
0.05 acre), and Category ill and IV wetlands less than 10,000 square feet (about 1/4 acre) are not
regulated by Jefferson County. That means that an area that meets the three-parameter definition
as described in RCW 90.58.380 must also be larger than the minimum size to be regulated as a
wetland by the county (there is no minimum size for federal regulations to apply). The wetland
edge is located by evaluating the presence or absence of the three parameters, then flagged in the
field, often for a subsequent survey, but sometimes just for purposes of onsite measurement.
Once identified as jurisdictional wetland, the wetland is "rated" using the 1993 edition of the
Western Washington Wetlands Rating System. The 1993 rating system combines a series of
questions and a point system to determine the specific value of the individual wetland. Depending
on site specific, pre-development wetland vegetation, soils, hydrology and buffer characteristics,
the wetland has greater or lesser value and so is afforded varying levels of protection in the form
of wetland butTers. The higher the rating and the higher the intensity of development, the greater
the buffer, ranging from a minimum of 25 feet for low quality, small wetlands adjacent to low
intensity development areas up to a maximum of 150 feet for the highest quality, or rare wetlands
adjacent to high intensity development areas. The area within the wetland buffers is generally
considered unavailable for development, unless there is no reasonable alternative to a proposed
activity.
Streams are Classified as to Type using the definition supplied in WAC 222-16-031 (as amended
from WAC 222-16-030). According to the Jefferson County Critical Area Ordinance, Type 1 and
2 streams are given a ISO-foot buffer; Type 3 and 4 streams, a 100-foot buffer, Type 5 streams, a
50-foot buffer. It is important to note that any stream wider than 2 feet with a gradient of less
than 20 percent that drains to a Type 1,2 or 3 stream may meet requirements to be classified
as a Type 3 stream, even if it only has seasonal flow and there is no documented fish use. It is
also important to note that man-made blockages to fish passage (such as a poorly installed
culvert) are considered temporary, so will not affect stream typing. The area within the stream
page 2
buffers is generally considered unavailable for development, unless there is no reasonable
alternative to a proposed activity.
Federal Reeulations: Army Corps of Eneineers
Any direct impacts to a wetland are regulated by the Army Corps of Engineers (COE). The COE
regulates wetlands of any size, i.e., there is no minimum size for a federal jurisdictional wetland.
Furthermore, the COE must be notified of all impacts to wetlands. There are about 40 Nationwide
Pennits that define certain allowed impacts to wetlands. As a rule, the COE should be contacted
and the proposed activity described. They will let the applicant know if one of the Nationwide
Pennits fits, or if no permit is required. If no pennit is required, they will still require that a
standard report be filled out and submitted that describes the activity in detail.
A recent Supreme Court ruling determined that COE authority did not extend to isolated wetland
systems, but rather those that are associated with streams or rivers -- i.e., potentially navigable
waters defined as Waters of the United States. Under those circumstances, ifa site has what
appears to be an isolated wetland, a representative from the COE will make an onsite
detennination on whether that wetland meets the definition of "isolated".
If the COE is not notified of a wetland impact prior to the event, the action may be treated as a
violation of federal law. Impacts of 0.1 to 2 acres are typically regulated under one of the
Nationwide Permits with concurrent permit review by the COE and the Washington State
Department of Ecology. If the impact falls within the allowed impact definition of a Nationwide
Pennit, the action will be allowed as long as all the details of the permit are carried out as
described. Impacts not covered by one of the Nationwide Pennits will require an individual
pennit. Under that condition, a detailed assessment of the project will be required, including an
alternatives analysis and detailed justification of the proposed impacts with no guarantee of
pennission to perform the proposed activity.
In response to recent listings of some salmonid species in the Puget Sound, a Biological
Assessment will also be required as part of the COE pennitting process. The Biological
Assessment is a detailed report describing whether there are any endangered species on or near
the site and the potential impacts of the project on those species. If the report indicates an impact
on endangered species, additional work will be needed to obtain even a Nationwide Pennit. That
work would involve making changes to the project proposal that would eliminate or at least
reduce those impacts.
Other Regulatory State Agencies
Other potentially involved agencies include (but are not limited to) the Washington State
Department ofFish and Wildlife (WDFW), and the Washington State Department of Natural
Resources (DNR) Natural Heritage Program. The WDFW will be involved if there are any
wetland or stream crossings.that would require a Hydraulics Pennit (a pennit that defines how the
crossing will be completed to minimize impacts to resident fish and other species), or if there are
any endangered or threatened animal species in or near the wetlands or therProject;site:--'l'hei~.'.--'_._-'\
pag,~l,
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Natural Heritage Program will be involved if there are any endangered or threatened plant species
in or near the wetlands or the project site.
METHODS AND MATERIALS
Office Research
The Jefferson County Soil Survey was consulted to determine how local soils are mapped. The
Puget Sound LiDAR consortium maps were evaluated to determine how terrain across the greater
landscape around the project area might affect site hydrology, and to evaluate potential past
surface landscapes. The Cowardin Classification of Wetlands and Deepwater Habitats of the
United States (1979) was consulted to help properly classifY onsite wetland systems.
Field Research
Wetland edges were delineated using methods described in the Manual For Identifying and
Delineating Wetlands adopted by the State Department of Ecology and written into state law
pursuant to RCW 90.58.380 (i.e., the 1987 Army Corps of Engineers Wetlands Delineation
Manual, Technical Report Y-87-1, and all subsequent Regulatory Guidance Letters).
The manual requires examination of characteristics and indicators ofhydrophytic vegetation,
hydric soils, and wetland hydrology. Positive wetland indicators of all three characteristics must
be nonnally present to make a positive wetland determination. The method used to evaluate each
characteristic is summarized in Appendix I. Data at selected points were recorded on the Routine
Wetland Determination Data Fonn 1 (presented in Appendix ll).
The wetlands were rated using the methods described in the 1993 edition of the Washington State
Wetland Rating System for Western Washington.
RESULTS AND DISCUSSION
Site Description
The study site (approximately 30-50 acres) encompasses an old lumber mill propertyl (North Site)
and some agricu1turallands (South Site) owned by the Washington State Department ofFish and
WIldlife (WDFW) at the south end of Discovery Bay, in Jefferson County, Washington (in or near
Section 23, Township 29N, Range 2W) (vicinity map, Appendix IV).
Site Description and Evaluation of Field Conditions
The -50-acre study site lies on both sides of Highway 101 at the south end of Discovery Bay, in
Jefferson County, Washington. For purposes of discussion, the study area is broken into to
subareas: North Site (areas lying north of Highway 101) and South Site (areas lying south of
Highway 101).
1 It is our understanding that the lumber mill portion of the project area was only active for about
ten years, and has been abandoned since the 1960s.
page 4
North Site
The North Site has a brackish Estuarine, Intertidal, Emergent (Em) wetland, some Estuarine and
Marine, Sub- Tidal, Un-co~solidated Bottom (ESU and MSU) wetlands, as well as freshwater
Palustrine Scrub/Shrub- Palustrine Forested (pSSIPFO) wetlands. From the use as an old lumber
mill site, there was fill on top of what had previously been estuary/marine wetland surfaces - both
sub-tidal and intertidal types. It also appears that there may have been some freshwater wetlands
filled as well on what was the original supra-tidal terrace to the west.
The current PSSIPFO wetland system appears to have a hydrology that results from seasonal
stormwater runoff being trapped and channeled by the fill. So we suggest that some of the
current freshwater wetland has possibly expanded relative to the pre-fiU condition.
In addition, there is an old railroad grade running around the western edge of the study site
(damming effect), as well as an offsite fill area southwest of the study site parcel. So most of the
current estuary and freshwater wetland boundary is an artificial toeslope of fill edge. It is
assumed that several acres of wetland were filled to create the current surface.
It is proposed to remove all fill and restore the site to something comparable to the original
wetland! estuary condition. Based on old aerial photo records (photo from circa 1950 provided
by NOSe), about 2/3rds of the original EIB (Estuary, Intertidal, Emergent) surface in this
southwestern portion of Discovery Bay has been filled (including offsite areaS to the southwest).
About half of the EIB fill lies within the project boundaries and about half outside. The offsite fill
area is now a parking lot for a business located southwest of the study area along Highway 101.
More than half of the onsite :fill (in the BIB) is composed of old sawdust - a pile that was
described as having once been more than 20 feet high (up to 40 feet high), but is now only about
2-3 feet higher than the adjacent intertidal estuary surface. About half of the sawdust pile is
covered with young volunteer forest tree and shrub species. In the northern portions of that
sawdust :fill area, there is a deep hole of unknown dimensions that is currently filled with saturated
sawdust to about 9 feet depth (about 7.5 feet below what we estimate to be the original estuary
surface elevation at that location.). More work may be necessary during dryer summer months to
adequately define that area and its potential impact on the restoration project.
It is our understanding that recent hand-borings in that area and other areas to the north have also
indicated sawdust and gravel fills in what appears to have been a depressional freshwater system.
(personal communication, Bob Barnard, WDFW) There is no clear indication of such a system
on the old photos, but it is certainly possible in this setting. We have observed similar peat and
muck capped freshwater wetlands on low terraces adjacent to saltwater along the west side of the
Hood Canal and farther south on similar geomorphic surfaces. These terrace wetland systems
appear to form as a result of seasonal groundwater seeping out across the terraces from adjacent
steep slopes areas that are underlain by glacial till or similar impermeable substrates.
Structural:fill was also placed in an area along the northeastern edge of the study site. The fill
was placed in Sub-tidal Marine and Estuarine areas in order to provide a solid surface to build
page 5
-+
several single-story wood frame structures (storage sheds, maintenance shed, and possibly
dormitories) that supported the mill activities. This fill was dominantly an extremely gravelly
loamy sand material that we assume came from a nearby gravel pit (the fill was mostly clean with
no appreciable coarse organic debris inclusions), but in some area was mixed with layers of
sawdust waste from onsite mill activities.
It should be noted that recent research carried out by Dr. Joel Elliot (University of Washington) in
the Tacoma area indicates that sawdust waste in marine areas often result in growth ofBeggiatoa
bacteria (an anaerobic bacteria). High levels of hydrogen sulfide gas are given off during
Beggiatoa's anaerobic respiration; anaerobes utilize materials other than 02 as electron acceptors
during respiration, and Beggiatoa uses hydrogen sulfide compounds available from the wood
wastes. This results in release of highly acidic sulfide compounds that have a negative effect on
growth of eelgrass beds2 and we may presume, other types of marine or estuary vegetation. We
provided a copy of Dr. Elliott's article with the previously provided soils investigation report, and
we recommend that this issue be taken into account when deciding what to do about the onsite
sawdust wastes. The information contained in that article suggests that complete removal of the
sawdust may be vital if a normal suite of estuary plant species is desired. Other information from
other sources and wetland scientists corroborates this indication.
The onsite freshwater wetland (pSS/PFO) is an extension of a system that lies between the study
site and Highway 101, developed from trapped seasonal stormwater surface runoffand
groundwater contributions along the northwestern edge of the study area. It is likely to be a
remnant of the buried system mentioned previously that appears to have been at least partially
filled during milling activities. That freshwater wetland flows into the remnant estuary wetland in
about the west-central portion of the North Site. It is our understanding that there is another
small isolated depressional wetland area slightly north of this one that lies in the dense vegetation
west of the northern building that was not formally delineated during this work (west of Pit 2).
South Site
The South Site encompasses all areas south of Highway 101, including a recently restored section
of Salmon Creek, and associated wetlands and uplands to the west and east. For purposes of this
discussion, we will call the area west of Salmon Creek "Western Subarea", and the area east of
Salmon Creek "Eastern Subarea".
It is proposed to enhance salmonid habitat in the South Site by creating estuary habitat in the
Eastern Subarea, and using upland portions of the Western Subarea to receive soils excavated
from the Eastern Subarea during the estuary creation process.
It is our understanding that there is tidal influence up the creek for several hundred feet south of
the bridge at Highway 101 as well as up side ditches that run parallel to the highway fill pads to
2 Elliot, Joel K., Erin Spear, sandy Wylie-Echevenia, 2006, "Mats of Beggiatoa bacteria reveal
that organic pollution from lumber mills inhibits growth of Zostera marina", Marine Ecology 27 (2006)
page 6
the east. From our onsite observations, salt influenced vegetation adjacent to and outside of the
main creek channel is restricted to a small shallow flood terrace extending only about 200 feet
south of the bridge at Highway 101. So the tidal influence farther upstream appears to be
restricted to the incised stream or ditch channels; any overflow events are not significant enough
to change the vegetation community to salt-tolerant species.
However, that is not to say that this has been the long-term condition. Salmon Creek (and Snow
Creek) has been subjected to over 100 years of management with farm activities on both sides of
the creek. There is ample evidence in the aerial and LiDAR photos of extensive ditching and
draining, as well as realignment of stream channel(s). So the pre-development Salmon Creek (and
Snow Creek) channel would have been shallower, more braided, and would have periodically
meandered back and forth across the southern flood plain. Most important, salt-water influence
on the upstream vegetation communities from tidal flushing would have been more extensive.
Currently, the wetlands south of Highway 101 are predominantly freshwater systems. However,
as stated above, they are expected to have had a much greater percentage coverage of estuary in a
pre-agricultural, pre-logging natural state. And it should be noted that soil profiles that were
described during parallel soils investigations for this project showed clearly that the entire Eastern
Subarea pasture is underlain by old estuarine marine sediments at about 3-4 feet depth, buried
below silty, post-glacial flood deposits from the Snow and Salmon Creek systems. So despite the
current condition, this area clearly served as estuary in the past at various times.
The Eastern Subarea wetlands are currently, for the most part, managed as mowed pasture. The
western portions are slightly better drained, supporting a wet pasture-grass vegetation
community. The western portion is a wetland complex that also includes about 20% small upland
islands - slight ridges and rises that may be old road fills or scars from clearing or past agricultural
activities. The eastern portion has shallower hydrology that appears to be dammed to some
degree by a small dirt road that runs across the wetland from north to south. East of the road,
despite the surface elevation being almost identical, the wetland hydrology is within a inch or two
of the surface compared to about 12 inches average west of the road. And the eastern vegetation
community is about 90% soft rush and sedges while the western is pasture grasses. This appears
to suggest that at least some of the hydrology source for this wetland is horizontal groundwater
flow from the southeast. Close examination ofLiDAR image of the area shows a meandering
channel scar that crosses the farm field south of the study site from the Snow Creek drainage to
the Salmon Creek drainage. This suggests that the two creeks were at least partially merged
farther south in the past, and were realigned and split to open up more farmlands to the south.
The Western Subarea wetlands (west of Salmon Creek) are greatly influenced by sideslope seeps
and shallow subsurface flow from the northwest. A deeply incised stream channel crosses the
upper slope just below Uncas Road to the west. That water drains northeast, eventually merging
at the toeslope with wetlands across the bottomlands west of Salmon Creek. In addition to that
hydrology, there are many sideslope seeps emanating from the upper slopes around an old
farmstead. The people that built the house and the barns (50-100 years ago) first.createdflat fill
pads, and installed drains all around the pads to redirect the seeps. But there are still several small
wetland areas high on the slope - one on a bench near the incised creek channel north of the barn,
with hydrology at least 10 feet higher in elevation than the barn floor or the flowing water in the
creek; one at the southeast comer of the barn (with water actually poneling under that portion of
the barn), and a sideslope ditch draining south then east around the upper edge of a fill pad for a
more recently built metal shed south of the old wooden barn. Most of that water disappears into
deeper, more gravelly soils that lie downslope, then it surfaces again at the toeslope, in wetlands
near a side channel that drains to Salmon Creek. As a result, there is a broad mild sideslope that
is not wetland, but is surrounded on three sides by wetland. The western wetlands are actually
upslope, while those to the north and east are downslope hydrologically.
It is proposed to use the non-wetland sideslope (currently a grassed pasture) as a receiving area
for soils removed from the proposed estuary creation area in the Eastern Subarea. A temporary
road will be built to ensure a stable pathway for dump trucks. That temporary road will result in
8,280 sqft (0.19 acres) of temporary fill in a low quality Palustrine Emergent (pEM) wetland on
the upper slope. But once the project is complete, the fill will be removed, and the PEM wetland
will be restored to a condition equivalent or better than the pre-impact condition.
Please note that the non-wetland sideslope soils are expected to have shallow seasonal
groundwater that can create soft ~ots and/or unstable surfaces. So it is recommended to
restrict road construction and dumpinf to the dryer summer months.
Soils
A copy of the local soils map (Jefferson County Soil Survey) is provided below. Please note that
the Jefferson County Soil Survey was a lower level survey project, in that the map units are rather
large and have more inclusions than is standard for higher level soil surveys. For that reason, the
soil mapping is less precise, and sometimes in error.
In general, this soil map indicates that there are three hydric soils3 mapped in the area, the Lummi
silt loams (Lu), the Mukilteo/ McMurray peats (Mm) and the Belfast silt loam, heavy variant
(Bh).
· Lummi silt loam (Lu): These soils are mapped in the tideflat areas of the North Site as well
as in the area targeted for estuarine creation on the South Site. The Lummi series consists of
deep, poorly drained soils that formed in marine sediments and alluvium. These soils are on
flood plains and have slopes of 0 to 3 percent.
· Mukilteo and McMurray peats (Mm.): These soils are mapped at the northern end of the
Western Subarea (South Site). The McMurray series consists of deep, very poorly drained
soils formed in partially decomposed woody and herbaceous organic material. They are in
depressional areas on glacial till plains and outwash plains or in abandoned glacial stream
channels. The Mukilteo series consists of deep, very poorly drained soils formed in deep
organic deposits. Mukilteo soils are mainly in depressional areas on glacial uplands. Some are
3 Defined as soils officially listed as hydric soils on the Washington State Hydric Soils List.
page 8
in river valleys.
· Belfast silt loam (Bh): These soils are mapped across the floodplain bottomlands on both
sides of Salmon Creek. The Belfast series consists of deep, moderately well drained soils
that formed in stratified alluvium. Belfast soils are on nearly level flood plains.
In addition, other soils with shallow seasonal water tables are mapped on the study site, and often
these map units have wetland inclusions.
· Swantown gravelly loam, 0-8% slopes (SuB): These soils are mapped across the western
sideslope (the proposed dumping area). The Swan town series consists of moderately deep to
a cemented pan, somewhat poorly drained soils formed in glacial till on till plains, and is
described as having seasonal water table as shallow as Y2 to I ft. But since that water
typically drains fast between storms, the Swantown soils are not considered hydric (the water
does not persist for more than two weeks at a time).
· Clallam gravelly sandy loam, 0-15% slopes(CmC): This soil is mapped farther upslope to the
west of the South Site, and is also expected to have shallow seasonal water at 2-4 feet depth.
The Clallam series consists of moderately deep to densic (compacted) materials, moderately
well drained soils formed in glacial till over very compact glacial till.
· Hoypus gravelly sandy loam, 0-15% slopes (RvC): This soil is mapped farther upslope to the
west of the North Site. There are often gravel pits in this soil type, so it is presumed to be
the source of the coarse-textured fills observed in the North site. The Hoypus series consists
of very deep, somewhat excessively drained soils that formed in glacial outwash.
Map Unit
AgE
AlC
AID
ArnC
BdD
Bh
cm
CmC
CmD
Cu
EvC
HuC
HuD
HvC
Lu
Mm
SuB
Td
TuC
W
Map Unit Name
Agnew silt loam, 30 to 50 percent slopes
Alderwood gravelly sandy loam, 0 to 15 percent slopes
Alderwood gravelly sandy loam, 15 to 30 percent slopes
Alderwood gravelly loam, 0 to 15 percent slopes
Beausite-Alderwood complex, 0 to 30 percent slopes
Belfast silt loam, heavy variant
Cassolary sandy loam, 15 to 30 percent slopes
Clallam gravelly sandy loam, 0 to 15 percent slopes
ClaIlam gravelly sandy loam, 15 to 30 percent slopes
Cut and fill land
Everett gravelly sandy loam, 0 to 15 percent slopes
Hoypus gravelly loamy sand, 0 to 15 percent slopes
Hoypus gravelly loamy sand, 15 to 30 percent slopes
Hoypus gravelly sandy loam, 0 to 15 percent slopes
Lummi silt loam
McMurray and Mukilteo peats
Swan town gravelly loam, 0 to 8 percent slopes
Tidal marsh
Tukey gravelly loam, 0 to 15 percent slopes
Water
page 10
Wetland Ve~etation: North Site
The estuary wetlands were dominated by salt-tolerant grasses. . A species list for the estuary
portions of the system was prepared by Dr. Fred Weinman, an estuary vegetation specialist
. ~odcing meetJr ft)f tile }TOS;C 8f8~. We provide that list with the Data Forms in Appendix II
since it will supplement that information. It is a complete list rather than just dominant species.
The PSS/PFO freshwater wetlands were a mixture of shrub, tree and emergent vegetation -
mostly typical of disturbed conditions, and many volunteers with seed source apparently escaped
from lumber mill activities. The PSS community was dominated by red alder and willow species.
Buffer areas included Douglas-fir, sala!, sword fern and Himalayan blackberry.
A list of dominant onsite vegetation has been included below.
W etland Vegetation Species List
Trees
Alnus rubra (red alder) FAC
Thuja plicata (western redcedar) FAC
Picea sitchensis (Sitka spruce) FAC
Salix species
Shrubs
Alnus rubra (red alder) F AC
Rosa spp F AC-F ACU
Rubus spectabilis (salmonberry) FAC
Grasses. forbs. vines and ferns
Carex obnupta (slough sedge) OBL
Phalaris arundinacea (reed canarygrass) FACW
Juncus effusus (soft rush) FACW+
Equisetum arvense (field horsetail) F AC
Upland Vegetation Species List
Trees
Pseudotsuga menziesii (Douglas-fir) FACU
Alnus rubra (red alder) F AC
Thuja plicata (western redcedar) F AC
Shrubs
Corylus cornuta (beaked hazelnut) F ACU
Rubus discolor (Himalayan blackberry) F ACU
Cytisus scoparius (Scot's broom) NI
Gaultheria shal/on (salal) F ACU
Rosa spp F AC-F ACU
Grasses. forbs. vines and ferns
Juncus effusus (soft rush) FACW+
Equisetum arvense (field horsetail) F AC
W etland Vegetation: South Site
The dominant vegetation in the Eastern Subarea (proposed for estuary creation) is wet-tolerant
planted pasture grasses (palustrine Emergent vegetation). There are minor areas along stream
channels that are dominated by wet-tolerant shrubs, and no forested areas.
The wetlands in the Western Subarea are also mostly Palustrine Emergent, and dominated by wet-
tolerant pasture grasses. But there are broader areas of Palustrine Scrub Shrub wetlands along
the swales and drainage features in the bottomlands. And we observed that the previously grass-
dominated areas along that Palustrine Scrub-Shrub toeslope swale have already been planted with
a variety of wet-tolerant native species - we presume as part of the ongoing Salmon Creek
restoration project. Most of these plants had not leafed out when we were in the field, but they
appeared to include at least some red osier dogwood and a variety of willow species. Still- non-
native planted pasture mix grasslands dominate these wetlands as well. So we do not provide a
species list of the pasture grasses.
Hydroloey: North Site
The source of the hydrology for the estuaryJllJ:e~ds is mostlylfom tidal fluctuation, although
there are some freshwater inputs from th~ol1~it~~9J1!!w~!er runoff':afld groundwater influenced
wetlands as well as influences from mixing of waters from SaImolfCreek and salt water at high
tide.
We should note that there were areas within the sawdust pile zone where water is trapped or
dammed in depressions in the sawdust higher than the natural water table found outside of the
sawdust area. In a couple of these zones, we augered down and found a dry layer in the sawdust
below overlying a deeper water table that appeared to be the true water table expression. For that
reason, we considered the hydrology in the small trapped or dammed depressions to be artificial
since the water table would not be at that elevation without the sawdust pile, which is a fill.
Hydroloey: South Site
As was discussed previously, the dominant hydrology at this point is from seasonally infiltrating
precipitation and groundwater flow from the southeastern floodplains and sideslope seeps from
the west and northwest.
Wetland Ratings Results
To rate the wetlands, we first break the systems up into the rating units, which in general are areas
that share a common hydrology. Using the rules and guidance provided in the 1993 Western
Washington Wetland Ratings manual, we defined the Rating Units (displayed on project map in
the Appendices) and provide results of the rating analysis in a Table below:
page 12
Rating Unit 1: Estuary wetlands at the North Site, which include all of the onsite estuary and as
well as the offsite estuary areas on both the western and the eastern sides of the Salmon Creek
and Snow Creek outlets north of Highway 101. These wetlands are classified as brackish
Estuarine, Intertidal, Emergent (EIE) wetland, and also include some Estuarine and Marine, Sub-
Tidal, Un-consolidated Bottom (ESU and MSU) wetlands. And of course they are directly
associated with Deep-water Marine systems in Discovery Bay and beyond to the north.
Rating Unit 2: Freshwater wetlands at the North Site, which include all of the Palustrine
Scrub/Shrub and Palustrine Forested (pSSIPFO) wetlands that are trapped by fills in the northern
portion of the site.
Rating Unit 3: Freshwater wetlands on the eastern side of Salmon Creek at the South Site, south
of Highway 101. These wetlands include the wet pasture lands (palustrine Emergent wetlands)
that lie south of the row of buildings on fill, south of Highway 101. This wetland system extends
many acres offsite to the south, and may include other wetland classes, but we limited this rating
to an assessment of the dominantly Palustrine Emergent (pEM) system that also has inclusions of
Palustrine Scrub-Shrub (PSS), mostly lining the creek channels.
Rating Unit 4: Freshwater wetlands on the western side of Salmon Creek at the South Site, south
of Highway 101. These wetlands include the wet bottomlands (PEM) along Salmon Creek and
adjacent feeder channels (pEMlPSS) from the west and southwest. This wetland rating unit lies
north and east of the targeted upland spoils site, west of the creek system, and also extends along
the creek and its feeder systems for many acres offsite to the south. In offsite areas, it may
include other wetland classes, but we limited this rating to an assessment of the dominantly
Palustrine Emergent system that had inclusions of Palustrine Scrub-Shrub, mostly lining the creek
channels.
Rating Unit 5: Freshwater PEM wetland (slightly less than 1/4 acre) upslope and west of the
spoils site and north of the barn. This is a small isolated wetland that is formed from a sideslope
seep, and does not have a surface connection to the other onsite systems. At its downslope edge,
the water drains to deeper soils. It is assumed that water drains horizontally downslope below the
spoils pile area. Because it is less than 1/4 acre. it is not regulated bv Jefferson County. so is
note rated and has no buffer. However, it is still protected from direct impacts by federal law, so
must be avoided if at all possible.
Rating Unit 6: Freshwater PEM wetland (approx. 1/8 acre) on the upper slope -- upslope and
west of the spoils site and partly underneath the southeast comer of the barn. This is a very small
wetland that is formed from a sideslope seep. The overflow from this system drains east in a
small ditch that runs along the north farm road. It eventually drains to the Rating Unit #4
toeslope wetland system, but is more than 100 feet away, so is considered a separate system for
purposes of rating. Because it is less than 1/4 acre. it is not regulated bv Jefferson County. so is
note rated and has no buffer. However, it is still protected from direct impacts by .f~g~r~law,..sc;):- ...
must be avoided if at all possible. r:;':-<" ',~i
p~ge
Table 1. Results of the wetlands rating analysis (forms in Appendix ill).
Wetland Rating Wetland Standard Primaty Reason for Category Rating or Score Result
Rating score Category Buffer (ft)
Unit
RUl NA I 150 Estuary system greater than 5 acres, automatically Category I
RU2 28 II 100 Connection to Estuary system (RU1) and associated salmon
habitat
RU3 27 II 100 Large size; two classes; connections to other upland and wetland
systems
RU4 26 II 100 Large size; two classes; connections to other upland and wetland
systems
RU5 NN IV NA Not regulated by Jefferson County due to being less than 1/4
acre. Cat IV system due to being small, hydrologically isolated,
and dominated by reed canarygrass
RU6 NN ill NA Not regulated by Jefferson County due to being less than 1/4
acre. Very low score and very low quality wetland, but not
hydrologically isolated, so Cat ill system.
To summarize the table above, the larger systems (RUI-RU4) are either Category I or IT systems,
which have buffers of 150 feet and 100 feet respectively. The smaller systems (RU5 and RU6)
are less than 1/4 acre, so are not regulated by Jefferson County, and have no buffers.
The buffers on RUI-RU4 may be reduced, increased or averaged as is defined below (italicized
text taken directly from the Jefferson County Critical Areas Ordinance). However, at this point,
there is no proposal to change the standard buffer. In fact, since this is a wetland enhancement
Icreation project, it may be assumed that the buffer functions and vegetation cover will improve
overall by the end of the project.
U(5)Buffers - Standard Requirements. The following buffer provisions shall apply:
a) Buffer areas shall be required to provide sufficient separation between the
designated wetland and the ac{jacent proposed project.
b) The appropriate width of the wetland buffer shall be determined by either:
application of the standard buffer widths set forth below in Table 3-4; or by variations
4 This wetland qualifies as a Category N system (isolated and dominated by reed canarygrass); it
is less than 1/4 acre, so is not regulated by Jefferson County - so has no buffer. However, it is still
protected under federal law, so direct impacts must be avoided ifpossible.
5 This wetland qualifies as a Category ill system (not hydrologically isolated); it is less than 1/4
acre, so is not regulated by Jefferson County - so has no buffer. However, it is still protected under federal
law, so direct impacts must be avoided ifpossible.
page 14
to the standard buffers as allowed in subsections (6), (7) and (8) of this section.
c) Buffers shall remain naturally vegetated except where the vegetation has been
disturbed, invaded by highly undesirable species (e.g., noxious weeds), or would
substantially benefit from the increased diversity of introduced species. Where buffer
disturbance has occurred during construction, replanting with native vegetation shall
be required Minor pruning of vegetation to enhance views and removal of undesirable
species (e.g., alders) may be permitted by the administrator on a case-by-case basis.
d) All buffers shall be measured perpendicularly from the wetland boundary as
surveyed in the field
e) Standard wetland buffer widths shall be as established in Table 3-4.
Table 3-4. Standard Buffer Widths for Wetlands
Wetland Category
11
II
III
IV
Standard Buffer Width
50 feet
100 feet
50feet
25 feet
(6) Reducing Buffer Widths. The administrator may reduce the standard wetland buffer
widths, when the project applicant demonstrates both of the following to the satisfaction of
the administrator:
a) Standard wetland buffer width averaging as set forth in this article is unfeasible.
b) The project application includes a buffer enhancement plan using native vegetation
which substantiates that an enhanced buffer will improve the functional attributes of
the buffer to provide additional protection for functions and values.
(7) Increasing Buffer Widths. The administrator may increase the standard wetland buffer
widths when a larger buffer is necessary to protect wetland functions and values based on
local conditions. This determination shall be made only when the department demonstrates
any one of the following through appropriate documentation:
a) A larger buffer is necessary to maintain viable populations of existing species.
b) The wetland is used by species listed by the Washington State Department of Wildlife
as endangered, threatened, or sensitive, or has documented priority species or habitats
or essential or outstanding potential habitat for those species, or has unusual nesting
or resting sites (e.g., heron rookeries and raptor nesting trees).
c) The adjacent land is susceptible to severe landslide or erosion, and erosion control
measures will not effectively prevent adverse wetland impacts.
d) The adjacent land has minimal vegetative cover or slopes greater than 45 percent.
(8)Averaging Buffer Widths. The administrator may modify the standard wetland buffer
widths set forth in this section by averaging. Buffer width averaging shall be allowed only
when an individual or firm meeting the criteria of JCC 18.15.400(2) demonstrates all of the
following to the satisfaction of the administrator:
a) Width averaging will not adversely impact the wetlandfunctionqr'l!qlttes-;-....__......_--
r
pa.:gr l~
b) The total area contained within the wetland buffer after averaging is not less than
that contained within the standard buffer prior to averaging;
c) The standard buffer width has not been reduced by more than 25 percent. lOrd 8-06
91J"
Pro.po.sed Impacts
This is a large, long-term chum salmon (and other associated species) habitat restoration project.
There will be no permanent :fill in wetlands, but a great deal of work will be carried out re-
contouring surfaces and rebuilding tidewater pathways, the result of which will be to create more .
wetland acreage. The Department ofFish and Wildlife engineers are designing the project, and
some aspects of the project are still very much in flux. However, at this point, according to data
provided by WDFW staff: it is proposed to carry out the following (please refer to plan maps in
the Appendices for details):
N o.rth Site:
To.tal area o.f disturbance: 183,780 sf
(Most of this is currently filled area that will be restored as wetland)
Area of disturbance in wetlands 34,660 sf(0.8 acres)
(No fill-- wetland restoration, including tidal channels and revegetation)
So.uth Site (Eastern Subarea):
To.taI area o.f disturbance: 311,100 sf (7.14 acres)
(All wetland acreage - surface elevation lowered to create estuarine habitat wetlands system)
So.uth Site (Western Subarea)
Area for fill placement and road: 131,950 sf
(Not within wetlands)
Area of temporary road fill in wetland 8,280 sf (0. 19 acres)
(Fill will be removed and the wetland will be restored after project is complete)
To.tal area o.f disturbance: 140,230 sf
Additional details on the planned wetland enhancement project can be obtained from WFDW staff
engineers.
I hope this report provides enough information to proceed with project planning. Please call if
you have any questions or require additional detail or clarification on any of these issues.
. sOil12..~1
Lisa Palazzi, CWS C:~~' ~
SWS Certified Wetland Scientist
SSSA Certified Prof. Soil Scientist
page 16
.APPENDIX I
METHODS
I
I
1-
;
APPENDIX I
DETAILS ON HOW TIm 1BREE PARAMETERS
-- HYDROPHYTIC VEGETATION, HYDRIC SOILS AND WElLAND HYDROLOGY --
ARE EVALUATED IN TIm FIELD.
Vegetatio.n
Hydrophytic vegetation is defined as "the sum total of maCfophytic plant life growing in water or
on a substrate that is at least periodically deficient in oxygen as a result of excessive water
content" (Washington Department of Ecology 1997). Several indicators may be used to
determine whether hydrophytic vegetation is present on a site. The most reliable indicator is
when more than 50% of the dominant plant species are classified as wetland plants on a certain
list of species that occur in wetlands; the list is maintained by the U. S. Fish & Wtldlife Service
(Reed 1988, with a 1993 update provided for the northwest United States).
The species list separates vascular plant species into five basic groups based on their wetland
indicator status -- Obligate (OBL), Facultative Wetland (FACW), Facultative (FAC), Facultative
Upland (FACU), and Upland (UPL). The plant species indicator status is based on an assessment
of the individual species' frequency of occurrence in a wetland. The three wetter facultative
(OBL, F ACW, and F AC) categories are further subdivided by "+" and "-" (i.e., F AC+, F AC and
F AC-) modifiers with the "+" modifier indicating that a species is tolerant of wetter conditions
within that group, and the "-" modifier indicating that a species is less tolerant of wet conditions
within that group (Reed 1988 and 1993). Table 1 below summarizes the indicator status ratings.
Tabl 1 PI
e . ant Indicator tatus Cate2o.rles
Indicato.r Catego.rylIndicato.r Defmition
Symbol
Obligate Wetland Plants (OBL) Plants that occur almost always in wetlands:
estimated probability in wetlands greater than 99%
under natural conditions.
Facultative Wetland Plants Plants that have an estimated probability of67%-
(F ACW) 99% to be found in wetlands.
Facultative Plants (F AC) Plants that are equally likely to occur in wetlands
or non-wetlands: estimated probability of 34% -
66% to be found in wetlands.
Facultative Upland Plants (FACU) Plants that usually occur in non-wetlands,
estimated probability of 1 % - 33% to be found in
wetlands.
Obligate Upland Plants (UPL) Plants that occur almost always in non-wetlands
under natural conditions, estimated probability
9reater that 99%.
s
page 17
Other indicators of hydrophytic vegetation include visual observation of plant species growing in
areas of prolonged inundation and/or soil saturation, morphological adaptations, technical
literature, botanical journals, technical reports, wetland plant database, physiological adaptations,
and reproductive adaptations. Plant species are identified using Flora of the Pacific Northwest
(Hitchcock and Cronquist 1973). Plant communities were classified using a system developed by
the United States Fish and Wildlife Service (Cowardin et al. 1979). This system is hierarchical
and structured around biological, hydrological, and substrate characteristics.
So.ils
A soil profile was examined at each plot using a 6-inch soil auger and/or tile spade. Soils were
sampled to a depth of24 inches. When using the 1987 methodology, the soil is observed for
hydric soil indicators immediately below the A-horizon or 10 inches which ever was shallower.
Hydric indicators for non-sandy soils include at a minimum, one or more of the following,
generally within 12 inches of the soil surface:
· organic soils (Histosols),
· histic epipedons,
· sulfidic material,
· aquic or peraquic moisture regimes (i.e. two weeks of continuous inundation or
saturation),
· reducing soil conditions, and
· soil colors; gleyed soils or nongleyed soils with a matrix chroma of 2 or less in mottled
soils or a matrix chroma of 1 or less in unmottled soils.6 Soil chroma, or color, was
determined using a Munsell color chart (Kollmorgen Corporation 1975).
In addition, we used the most recent version ofField Indicators of Hydric Soils, which provides
detailed descriptions of specific soil morphologic features that indicate long-duration saturation.
Onsite soil characteristics were compared to Natural Resource Conservation Service (NRCS)
descriptions of the mapped soils to either confirm the mapping or determine if an inclusion of
another soil type is present. When using the 1987 Routine Methodology, hydric soils are assumed
to be present in any plant community in which all dominant species have an indicator status of
OBL or, all dominant species have an indicator status of OBL or F ACW, and wetland hydrology
is present.
Hydro.logy
Wetland hydrology is defined as areas that are periodically inundated or have soils that are
saturated to the surface for a sufficient duration during the growing season. Indicators of wetland
hydrology are difficult to interpret in the field during the dry season or the rainy winter season as
a water table may be non-existent during the dry season, or higher than average for some periods
6 Mottles or redoximorphic features are spots or blotches of contrasting color occurriI1gwi,thill the soiL
matrix. Gleyed soils are predominantly neutral gray in color.
page 18
OCT - 4
ut.r
during the rainy season. The 1987 COE manual lists field indicators of wetland hydrology that
may provide evidence of recent and/or long-term hydrology events. The indicators are listed in
order of decreasing reliability. They include recorded data and field data, such as visual
observation of inundation or saturation, watermarks, drift lines, sediment deposits, and drainage
patterns.
Duration of inundation and/or soil saturation for th~ COE 1987 method is based on the number of
days at 32 degrees Fahrenheit or above during the growing season. For the Pacific Northwest,
inundation or saturation to the surface for at least 12.5% or greater of the growing season in most
years is required. The Seattle District of the COE requires two weeks of continuous soil
inundation or saturation within the growing season to satisfY wetland hydrology. The latter
criterion was used for this determination.
page 19
APPENDIX IT
DATA SHEETS
The list below is of species identified in the salt-water affected portions of the Discovery Bayf Salmon Creek no,
project study area by Fred Weinman (COE). It does not describe which species are dominant, but does show Cc>r;'\~\e
whether they occur in the high salt marsh (hsm), low salt marsh (Ism) or salt-water shoreline zones, and in some ..}
cases also freshwater (fw) and railroad grade (rr) and riparian (rip) areas. '0ok" ':sf01JLL
10 ~tt)~~
Location ";::)~ \eD
~1t~o7
Scientific Name
Angelica lucida
Asparagus officina1is
Aster subspicatus
Atriplex prostrata
Carex lyngbyei
Chenopodium album
Deschampsia cespitosa
Distichlis spicata
Festuca mbra var. littoralis
Glaux maritima
Grindelia integrifolia
Hordeum brachyanthemm
Juncus balticus
Juncus effusus var. pacificus
Juncus gerardii
Plantago maritima
Potentilla anserina
Salicornia virginica
Scirpus acutus
Scirpus maritimus
Stellaria humifusa
Triglochin maritima
Common name
Sea watch
Asparagus
Saltmarsh aster
Fat hen
Lyngbey's sedge
Lambsquarters
Tufted hairgrass
Saltgrass
Salt marsh fescue
Sea milkwort
Beach gumweed
Meadow barley
Baltic rush
Soft rush
Mud rush
Salt marsh plantain
Pacific silverweed
American glasswort
Hard-stem bulrush
Salt marsh bulrush
Salt marsh starwort
Seaside arrowgrass
Family
Apiaceae
Liliaceae
Asteraceae
Chenopodiaceae
Cyperaceae
Chenopodiaceae
Poaceae
Poaceae
Poaceae
Primulaceae
Asteraceae
Poaceae
Juncaceae
Juncaceae
Juncaceae
Plantaginaceae
Rosaceae
Chenopodiaceae
Cyperaceae
Cyperaceae
Caryophyllaceae
Juncaginaceae
Origin
N
I
N
I
N
I
N
N
N
N
N
N
N
N
I
N
N
N
N
N
N
N
hsm
hsm
hsm
hsm
hsm.Ism
rr,hsm
hsm
hsm,lsm
hsm
hsm
rr,hsm
hsm
hsm
hsm
hsm
hsm.lsm
hsm,rip,fw
hsm,lsm
salt water shoreline
salt water shoreline
Ism
hsm,lsm
Salmon Creek (9/23/04) by Fred Weinmann
sm=salt marsh
hsm=high salt marsh
lsm=low salt marsh
rr=railroad grade
rip=riparian
Scientific Name Common name Family Origin Location
Abies grandis Grand fir Pinaceae N rr
Acer macrophyllum Bigleaf maple Aceraceae N
Achillea millefolium Yarrow Asteraceae N rr
Agrostis capillaris Colonial bentgrass Poaceae I rr,pasture
Agrostis stolonifera Creeping bentgrass Poaceae I hsm,rr
Aira praecox Elegant hairgrass Poaceae I rr
Alnus rubra Red Alder Betulaceae N rip
Alopecurus pratensis Meadow foxtail Poaceae I pasture
Ambrosia chamissonis Silverburweed Asteraceae N sandy shores
Amelanchier alnifolia Servicebeny Rosaceae N rr
Anaphalis margaritacea Pearly everlasting Asteraceae N rr,rip
Angelica lucida Sea watch Apiaceae N hsm
Arbutus menziesii Pacific madrone Ericaceae N rr
Asparagus officina1is Asparagus Liliaceae I hsm
Aster subspicatus Saltmarsh aster Asteraceae N hsm
Athyrium filix-femina Lady fem Dryopteridaceae N rr,rip,fw
Atriplex prostrata Fat hen Chenopodiaceae I hsm
Brassica nigra Black mustard Brassicaceae I pasture
Buddleja davidiii Butterfly bush Buddlejaceae I rr
Calystegia silvatica Giant bindweed Convolvulaceae I rr,rip
Carex deweyana Dewey's sedge Cyperaceae N pasture
Carex lyngbyei Lyngbey's sedge Cyperaceae N hsm.lsm
Carex obnupta Slough sedge Cyperaceae N fw
Centaurea biebersteinii Spotted knapweed Asteraceae I rr
Chenopodium album Lambsquarters Chenopodiaceae I rr,hsm
Cichorium intybus Chicory Asteraceae I rr
Cirsium arvense Creeping thistle Asteraceae nox rr,rip,pasture,filled sm
Comus sericea Red-stem dogwood Cornaceae N rip
Crepis capillaris Smooth hawk's-beard Asteraceae I rr
Cytisus scoparius Scot's broom Fabaceae nox rr
Dactylus glomerata Orchard grass Poaceae I rr,pasture
Daucus carota Queen Ann's lace Apiaceae BOX rr
Deschampsia cespitosa Tufted hairgrass Poaceae N hsm
Dipsacus fullonum Wild teasel Dipsacaceae I rr,rip
Distichlis spicata Saltgrass Poaceae N hsm,lsm
Elytrigia repens Quackgrass Poaceae I rr,pasture
Epilobium ciliatum Watson's willowherb Onagraceae N rip
Equisetum arvense Field horsetail Equisetaceae N pasture" "
Equisetum hyemale Scouring rush Equisetaceae N rip
Equisetum telmatiea Giant horsetail Equisetaceae N ' rr.t!P
Festuca arundinaceae Tall fescue Poaceae I "1\f,pasture
-,
j
1 Festuca rubra var. littoralis Salt marsh fescue Poaceae N hsm
Festuca mbra var. rubra European red fescue Poaceae I pasture
1 Fragaria virginiana Wild strawberry Rosaceae N IT
Gaultheria shallon Salal Ericaceae N IT
Geum macrophyllum Big-leaved avens Rosaceae N IT,rip
1 Glaux maritima Sea milkwort Primulaceae N hsm
Glechoma hederacea Creeping charlie Lamiaceae I IT,rip
Grindelia integrifolia Beach gumweed Asteraceae N IT,hsm
1 Holcus lanatus Velvet grass Poaceae I IT,pasture
Holodiscus discolor Ocean spray Rosaceae N IT,rip
Hordeum brachyantherum Meadow barley Poaceae N hsm
Hypericum perforatum S1. John's wort Celastraceae nox IT
1 Hypochaeris radicata Hairy catsear Asteraceae nox IT
Hex aquifolium English holly Aquifoliaceae I IT
Impatiens capensis Jewelweed Balsaminaceae I rip
1 Juncus balticus Baltic rush Juncaceae N hsm
J Juncus e:ffiJsus var. pacificus Soft rush Juncaceae N hsm
Juncus effusus var.effusus Wire rush Juncaceae I IT,pasture
Juncus gerardii Mud rush Juncaceae I hsm
Lactuca muralis Wall lettuce Asteraceae I IT
Lapsana communis Nipplewort Asteraceae I IT
Lathyrus Iittoralis Gray beach pea Fabaceae N IT
Lolium perenne Perennial ryegrass Poaceae I pasture
Lonicera involucrata Black twinberry CaprifoIiaceae N rip
Lotus corniculatus Bird's foot trefoil Fabaceae I pasture
Lupinus arboreus Tree lupine Fabaceae I IT
Malus fusca Pacific crabapple Rosaceae N IT,rip
Oemlaria cerasiformis Indian plum Rosaceae N IT
Phalaris arundinacea Reed canary grass Poaceae nox pasture,rip,filled sm,fw
Phleum pratense Timothy Poaceae I pasture
Picea sitchensis Sitka spruce Pinaceae N IT
Plantago lanceolata English plantain Plantaginaceae I IT
Plantago maritima Salt marsh plantain Plantaginaceae N hsm,lsm
Polystichum munitum Sword fern Polypodiaceae N IT,rip
Potentilla anserina Pacific silverweed Rosaceae N hsm,rip,fw
Prunus avium Mazzard Rosaceae I IT
Pseudotsuga menziesii Douglas :fir Pinaceae N IT
Pteridium aquilinum Bracken Polypodiaceae N IT
Ranunculus acris Meadow buttercup Ranunculaceae I IT,pasture
Ranunculus repens Creeping buttercup Ranunculaceae I IT,rip,pasture,filled sm,fw
Rhamnus purshiana Cascara Rhamnaceae N IT,rip
Rhododendron Pacific rhododendron Ericaceae N IT
macrophyllum
Rosa nutkana Nootka rose Rosaceae N IT,rip
Rubus armeniacus Himalaya blackberry Rosaceae I IT,rip,pasture
Rubus laciniatus Evergreen blackberry Rosaceae I IT,pasture
Rubus parviflorus Thimbleberry Rosaceae N IT,rip
Rubus spectabilis Salmon berry Rosaceae N IT,rip
Rubus ursinus Dewberry Rosaceae N IT,rip,
Rumex crispus Sour dock Polygonaceae I IT,pasture
Salicornia virginica American glasswort Chenopodiaceae N hsm,lsm
Salix lasiandra Pacific willow Salicaceae N rip
Salix scou1eriana Scouler's willow Salicaceae N rr,rip
Sambucus racemosa Red elderberry Caprifoliaceae N rr
Scirpus acutus Hard-stem bulrush Cyperaceae N salt water shoreline
Scirpus maritimus Salt marsh bulrush Cyperaceae N salt water shoreline
Scirpus microcarpus Small-fruited bulrush Cyperaceae N pasture,fw
Senecio jacobaea Tansy ragwort Asteraceae nox rr
Solanum dulcamera Bittersweet nightshade Solanaceae I rr,rip
Sorbus aucuparia Rowan tree Rosaceae I rr
Spiraea douglasii Hardhack Rosaceae N rr,rip,fw
Stellaria humifusa Salt marsh starwort Catyophyllaceae N Ism
Taraxacum officinale Dandelion Asteraceae I rr,pasture
Thuja plicata Western redcedar Cupressaceae N rr,rip
Trifolium arvensis Rabbit's foot clover Fabaceae I rr
Trifolium pratense Red clover Fabaceae I rr,pasture
Trifolium repens White clover Brassicaceae I rr
Triglochin maritima Seaside arrowgrass Juncaginaceae N hsm,lsm
Tsuga heterophylla Western hemlock Pinaceae N rr,rip
Typha latifolia Common cattail Typhaceae N fresh water
Urtica dioica var. lyaIlii Stinging nettle Urticaceae N rr,rip
Vaccinium ovatum Evergreen huckleberry Ericaceae N rr
Vaccinium parvifolium Red huckleberry Ericaceae N rr
Verbascum thapsus Common mullein Scrophulariaceae I rr
Vicia sativa Common vetch Fabaceae I rr
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APPENDIX III
RATING FORMS
WElLANDS RATING FIELD DATA FORM BACKGROUND INFORMATION:
Name ofrater(s):Lisa Palazzi Affiliation(s)Pacific Rim Soil & Water. Inc. Date: April I. 2007
Name of Wetland (if known): North Site: Estuarv wetland (Rut) Govemmentjmisdiction of wetland: Jefferson
Location:: Section 23. Township 29N. Range 2W SOURCES OF INFORMATION: (check all sources that apply)
Site visit:1L USGS Topo map:1L NWI map:_ Aerial Photo:X Soil Survey:X Other:1L Describe: NOSC/WDFW
mans
WHEN 1HE FIELD DATA FORM IS COMPLETE, ENTER CATEGORY HERE: I Points: NA
Q.l. High Quality Natural Wetland.
Answer this question if you have adequate information or experience to do so. If not, find someone
with the expertise to answer the questions. Then, if the answer to questions Ill, 1 b, and lc are all
NO, contact the Natural Heritage Program ofDNR.
lB. Human-caused disturbances. Is there significant evidence of human -caused changes to
topography or hydrology of the wetland as indicated by any of the following conditions? (Consider
only changes that may have taken place in the last 5 decades.)
la1. Upstream watershed> 12% impervious
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
181. Wetland is ditched and water flow is not obstructed >>>>>>>>>>>>>>>>>>>>>>>>>>>>
103. Wetland has been graded. filled, logged >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1a4. Water in wetland is controlled by dikes, weirs, etc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1aS. Wetland is grazed >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
la6. Other indicators of disturbance (list below) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
The wetland is adiacent to Highwav 101. and bolUlded bv fills on three sides
lb. Are there populations of non-native plants which are CWTently present, covering more than
10% of the wetland, and appearing to be invading native populations? Briefly describe any non-
native plant populations and information sources: Pickleweed is native but invasive and
indicative oflow quality conditions
Ie. Is there evidence of human -caused disturbances which have visibly degraded water quality.
Evidence of the degradation of water quality may include: direct (untreated) nmofffrom roads or
parking lots; presence or historic evidence of waste dumps; oily sheens; the smell of organic
chemicals; or livestock use. Briefly describe: all of the above except for livestock use.
Q.2. Irreplaceable Ecological Functions:
Does the wetland:
- have at least 1/4 acre of organic soils deeper than 16 inches, and the wetland is relatively
undisturbed; (NOTE: If the answer is NO because the wetland is disturbed, briefly describe the
disturbance. >>>>>>>>>>>>>>>>>
- OR have a forested class greater than 1 acre >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have characteristics of an estuarine system >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have eel grass, floating Q! non-floating kelp beds? >>>>>>>>>>>>>>>>>>>>>>>>>>>
Circle Answers
No: to all go to
lb Yes
Yes:go to Q2l!!!
Yes:go to Q2 No
X!!!:go to Q2 No
Yes:go to Q2 No
Yes:go to Q2l!!!
X!!!:go to Q2 No
Yes:go to Q2
No: go to lc
X!!!:go to Q2
No : Possible
Cat. I: contact
DNR- Nat. Her.
Prgnn
No to all: go to
Q.3.
Yes:go to 2a No
Yes:go to 2b l!!!
Yes:go to 2c No
Yes:go to 2d No
Pagel
2a. Bogs and Fens: Are any of the three following conditions met for the area of organic soil?
2a.l Are Sphagnum mosses> 30% groundcover AND is cover of species from Table 3 <1O%?
- Is the area of Sphagnum mosses and deep organic soils >Y2 acre? Yes: Cat.!
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 acre? Yes: Cat. II
No: go to 2a.2
2a.2 Is there an area of organic soil which has an emergent class with at least one species from
Table 2 , AND is cover of species from Table 3 <10%?
- Is the area of herbaceous plants and deep organic soils> Y2 acre? Yes: Cat. I
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 acre? Yes: Cat.ll
No: go to 2a.3
2a.3 Is the vegetation a mixture of only herbaceous plants and Sphagnum mosses with no
scrub/shrub or forested classes?
- Is the area of herbaceous plants, Sphagnum, and deep organic soils >Y2 acre? Yes: Cat. I
- Is the area of herbaceous plants, Sphagnum, and deep organic soils 114-1/2 acre? Yes: Cat. II
No: go to Q3
Q.2b. Mature Forested Wetlands Yes: Cat. I
2b.l Does 50% of the cover of upper forest canopy consist of evergreen trees older than 80 years
or deciduous trees older than 50 years? (NOTE: Size of trees cannot be used as a smrogate for No: go to 2b.2
age.) Yes: go to 2b.3
2b.2 Does 50% of the cover offorest canopy consist of evergreen trees older than 50 years, AND ~: go to Q3
is the structural diversity of the forest high, as characterized by an additional layer of trees 20-49' Yes: Cat. I
tall, shrubs 6-20' tall, , and a herbaceous groundcover?
2b.3 Does <25% of the areal cover in the herbaceous! groundcover or the shrub layer consist of No: go to Q3
invasive or exotic nlant snecies from the 1).19 list?
Q.2c. Estuarine Wetlands Yes: Cat. I
2c.l Is the wetland listed as National Wildlife Refuge, National Park, National Estuary Reserve,
Natural Area Preserve, State Park, or Educational, Environmental, or Scientific Reserves !'!!!: go to 2c.2
designated under WAC 332-l5l?
2c.2 Is the wetland >5 acres; (incbuling tUetlS on both sides of the Salmon. Creek outlet) Yes: Cat. I
NOTE: If an area contains patches of salt tolerant vegetation that are <600 feet apart and separated
by mudflats that go dry on a Mean Low Tide, OR separated by tidal channels that are <100 feet
wide, then all the vegetated areas are to be considered together in calculating the wetland area. Yes: go to 2c.3
- OR is the wetland 1-5 acres;
- OR is the wetland <1 acre? Yes: go to 2cA
2c.3 Does the wetland meet at least 3 of the following 4 criteria? Yes: Cat. I
- minimum existing evidence of human-related disturbance, such as diking, ditching, filling,
cultivation, grazing, or the presence of non-native plant species;
- surface water connection with tidal saltwater or tidal freshwater;
- at least 75% of the wetland has a 100' buffer ofungrazed pasture, open water, shrub or forest;
- has at least 3 of the following features: low marsh; high marsh; tidal channels; lagoon( s);
woody debris; or contiguous freshwater wetland. No: Cat.ll
2c.4 Does the wetland meet all four criteria under 2c.3?
Q.2d. Eel Grass and Kelp Beds Yes: Cat. I
2d.l Are eel grass beds present? No: go to 2d.2
2d.2 Are there floating or non-floating kelp bed( s) present with >50% macro-algal cover in the Yes: Cat. I
month of Awrnst or Seotember? No: Cat. IT
Q.3. Category IV Wetlands
3a. Is the wetland less than I acre AND hydrologically isolated AND comprised of one vegetated
class that is dominated (>80% areal cover) by one species from Table 3 or Table 41
3b. Is the wetland less than 2 acres AND hydrologically isolated AND with one vegetated class
AND with >90% area cover of any combination of species from Table 3?
3c. Is the wetland excavated from upland AND comprised of a pond smaller than 1 acre without a
surface water connection to streams, lakes, rivers, or other wetlands AND with <0.1 acres of
vegetation?
Yes: Cat. IV
~: go to 3b
Yes: Cat. IV
No: go to 3c
Yes: Cat. IV
No: go to Q4
Page 3
WElLANDS RATING FIELD DATA FORM BACKGROUND INFORMATION:
Name ofrater(s):Lisa Palazzi Affiliation(s)facific Rim Soil & Water. Inc. Date: A:Qril1. 2007
Name of Wetland (if known): North Site: PSSIPFO wetland (RU2) Govermnentjurisdiction of wetland: Jefferson
Location:: Section 23. Townshin 29N. Range 2W SOURCES OF INFORMATION: (check all sources that apply)
Site visit:]L USGS Topo map:]L NWI map:_ Aerial Photo:X Soil Survey:X Other:]L Describe: NOSCIWDFW
mans
WHEN 1HE FIELD DATA FORM IS COMPLETE, ENTER CATEGORY HERE:1L Points: 28
Q.l. High Quality Natural Wetland.
Answer this question if you have adequate information or experience to do so. If not, find someone
with the expertise to answer the questions. Then,. if the answer to questions la, Ib, and lc are all
NO, contact the Natural Heritage Program ofDNR.
18. Human-caused disturbances. Is there significant evidence of human -caused changes to
topography or hydrology of the wetland as indicated by any of the following conditions? (CQ1Isider
only changes that may have taken place in the last 5 decadesJ
la1. Upstream watershed> 12% impervious
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
182. Wetland is ditched and water flow is not obstructed >>>>>>>>>>>>>>>>>>>>>>>>>>>>
183. Wetland has been graded, filled, logged >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1a4. Water in wetland is controlled by dikes, weirs, etc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
185. Wetland is grazed >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1a6. Other indicators of disturbance (list below) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
The wetland is adiacent to HilZhwav 101. and bounded bv fills on three sides. over 90% of
nerimeter
lb. Are there populations of non-native plants which are currently present, covering more than
10% of the wetland, and appearing to be invading native populations? Briefly describe any non-
native. plant populations and information sources: Reed canarygrass
Ie. Is there evidence ofhwnan-caused disturbances which have visibly degraded water quality.
Evidence of the degradation of water quality may include: direct (untreated) runoff from roads or
parking lots; presence or historic evidence of waste dumps; oily sheens; the smell of organic
chemicals; or livestock use. Briefly describe: all of the above excent for livestock use.
Q.2. Irreplaceable Ecological Functions:
Does the wetland:
- have at least 114 acre of organic soils deeper than 16 inches, and the wetland is relatively
undisturbed; (NOTE: Jfthe answer is NO because the wetland is disturbed, briefly describe the
disturbance. >>>>>>>>>>>>>>>>>
- QR have a forested class greater than I acre >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have characteristics of an estuarine system >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have eel grass, floating Q! non-floating kelp beds? >>>>>>>>>>>>>>>>>>>>>>>>>>>
Circle Answers
No: to all, go to
lb Yes
Yes:go to Q2 No
Yes:go to Q2 No
Yes:go to Q2 No
Yes:go to Q2 No
Yes:goto Q2 No
Yes:go to Q2 No
Yes:go to Q2
No: go to Ie
Yes:go to Q2
No : Possible
Cat. I: contact
DNR- Nat. Her.
Prgnn
No to all: go to
Q.3.
Yes:go to 2a No
Yes:go to 2b ~
Yes:go to 2c No
Yes:go to 2d No
28. Bogs and Fens: Are any of the three following conditions met for the area of organic soil?
28.1 Are Sphagnum mosses> 30% groundcover AND is cover of species from Table 3 <1O%?
- Is the area of Sphagnum mosses and deep organic soils >~ acre? Yes: Cat.!
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 acre? Yes: Cat. n
No: go to 2a.2
2a.2 Is there an area of organic soil which has an emergent clas$ with at least one species from
Table 2 , AND is cover of species from Table 3 <1O%?
- Is the area of herbaceous plants and deep organic soils > ~ acre? Yes: Cat. I
- Is the area of Sphagnum mosses and deep organic soils 114-1/2 acre? Yes: Cat.n
~: go to 2a.3
2a.3 Is the vegetation a :mixture of only herbaceous plants and Sphagnum mosses with no
scrub/shrub or forested classes?
- Is the area of herbaceous plants, Sphagnum, and deep organic soils >~ acre? Yes: Cat. I
- Is the area of herbaceous plants, Sphagnum, and deep organic soils 1/4-1/2 acre? Yes: Cat. n
No: go to Q3
Q.2b. Mature Forested Wetlands Yes: Cat. I
2b.l Does 50% of the cover of upper forest canopy consist of evergreen trees older than 80 years
or deciduous trees older than 50 years? (N01E: Size of trees cannot be used as a SU1TOgate for No: go to 2b.2
age.) Yes: got02b.3
2b.2 Does 50% of the cover of forest canopy consist of evergreen trees older than 50 years, AND No: go to Q3
is the structural diversity of the forest high, as characterized by an additional layer of trees 20-49' Yes: Cat. I
tall, shrubs 6-20' tall, , and a herbaceous groundcover?
2b.3 Does <25% of the areal cover in the herbaceous! groundcover or the shrub layer consist of ~:gotoQ3
invasive or exotic plant species from the D.19 list?
Q.2c. Estuarine Wetlands Yes: Cat. I
2c.l Is the wetland listed as National Wildlife Refuge, National Park, National Estuary Reserve,
Natural Area Preserve, State Park, or Educational, Environmental, or Scientific Reserves No: go to 2c.2
designated under WAC 332-l5l? Yes: Cat. I
2c.2 Is the wetland >5 acres; (indluling areas on both sides of the Salmon Creek outlet)
NOTE: If an area contains patches of salt tolerant vegetation that are <600 feet apart and separated
by mudflats that go dry on a Mean Low Tide, OR separated by tidal channels that are <100 feet
wide. then all the vegetated areas are to be considered together in calculating the wetland area. Yes: go to 2c.3
- OR is the wetland 1-5 acres;
- OR is the wetland <1 acre? Yes: go to 2cA
2c.3 Does the wetland meet at least 3 of the following 4 criteria? Yes: Cat. I
- minimum existing evidence of human-related disturbance, such as diking, ditching, filling,
cultivation, grazing, or the presence of non-native plant species;
- surface water connection with tidal saltwater or tidal freshwater;
- at least 75% of the wetland bas a 100' buffer ofungrazed pasture, open water, shrub or forest;
- bas at least 3 of the following features: low marsh; high marsh; tidal channels; lagoon( s);
woody debris; or contiguous freshwater wetland. No: CaUL
2c.4 Does the wetland meet all foW" criteria under 2c.3?
Q.2d. Eel Grass and Kelp Beds Yes: Cat. I
2d.l Are eel grass beds present? No: go to 2d.2
2d.2 Are there floating or non-floating kelp bed( s) present with >50% macro-algal cover in the Yes: Cat. I
month of Amllist or Sentember? No: Cat. n
Page 2
Q.3. Category IV Wetlands
38. Is the wetland less than I acre AND hydrologically isolated AND comprised of one vegetated
class that is dominated (>80% areal cover) by one species from Table 3 or Table 4?
3b. Is the wetland less than 2 acres AND hydrologically isolated AND with one vegetated class
AND with >90% area cover of any combination of species from Table 3?
3c. Is the wetland excavated from upland AND comprised of a pond smaller than 1 acre without a
surface water connection to streams, lakes, rivers, or other wetlands AND with <0.1 acres of
vegetation?
Q.4. Significant Habitat Value.
Answer all questions and enter data requested.
4a. Estimate total wetland area, selecting from choices in the near-right column, and score in the
far column:
Enter wetland acreage here: -10+ acres, and source; Inclucfuu{ offsite areas~ ocular estimate from
aerial photos
4b. Wetland classes: Circle the wetland classes below that qualify by being greater than 'l4 acre in
size for each class, and in the case of Open Water, being that size for:nwre than 1 month at a time.
Open Water Aquatic Beds Emergent Scrub-shrub Forested
Count the number of wetland classes above, then score according to the columns to the right.
4c. Plant Species Diversity. Class
For each wetland class (at right) that qualifies in 4b above, count the number of
different plant species you can find that cover more than 5% of the ground. It is not Aquatic
necessary to name them. Score in column at far right. Bed>>>>>
Note: Any plant species with a cover of> 5% qualifies for points within a class,
even those that are not of that class - i.e. a grass species can qualifY for points
in aforested class. Emergent>>>>
Scrub
Sluub>>>>>>
Forested>>>>>
4d. Structural Diversity.
If the wetland has a forested class, add 1 point if each of the following classes is present within the
forested class, AND is larger than 1/4 acre in size: Please note that these systems are offsite, so we
assuming these conditions from aerial photo indications; cannot check directly.
- trees >50' tall
- trees 20'-49' tall
- sluubs
- herbaceous groundcover
Also, add I point if there is any "open water" or " aquatic bed" class immediately next to the forested
area (i.e., there is no scrub/sluub or emergent vegetation between them).
Yes: Cat. IV
No: go to 3b
Yes: Cat. IV
No: go to 3c
Yes: Cat. IV
No: go to Q4
Circle scores
that qualitY
acres llOints
>200 6
40-200 5
10-40 4
5-10 3
1.5 2
0.1-1 ..!
<0.1 0
# of
classes llOints
--r- 0
2 3
'3 "6
4 8
5 10
!UP1? llOints
1 0
2 1
3 2
>3 3
1 0
2.3 1
4-5 2
>5 3
1 0
2 1
3-4 2
~ 2
1 0
2 1
3-4 2
~ 2
Yes=l No
Yes=l No
Yes=1 No
Yes=1 No
Yes=l ~
Page
neT - il
LJ J.
4e. Class futerspersion:
Decide from the diagrams below whether intersnersion between wetland classes is high, moderate, low,
or none. High=3
....one
-
lo,^, 10"'""
...~.
...~
..............
.....
.<:::.:::.,.~.::7~:..;:;;~'''"
.<,.......~.::,..:::;:;'
... . . .. ...
.. ......
. ....
l'T1<>d~rate
lT1odera't.e
high
4f. Habitat Features
Answer questions below, circle features that apply, and score to right
.Is there evidence that the open or standing water was caused by beaver activity?
>>>>>>>>>>>>>>>
.Is a heron rookety located within 3oo'? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.Are raptor nest(s) located within 300'1 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.Are there atleast 3 standing dead trees (snags) per acre >10" DBH (in or adjacent to the
wetland)?>>
· Are there at least 3 downed logs per acre with a diameter of>6" for at least 10' in length (in or
adjacent to..)? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
· Are there areas (vegetated or unvegetated) within the wetland that are ponded for at least 4 months
of the year, AND the wetland has not qualified as having an open water class in Q4b (i.e. <1/4 acre
in size)?
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
4g. Connection to Streams (Score one answer only.)
4g.1 Does the wetland provide habitat for fish at any time of year AND does it have a perennial
surface water connection to a fish bearing stream?
4g.2 Does the wetland provide fish habitat seasonally AND does it have a seasonal surface water
connection to a fish bearing stream?
4g.3 Does the wetland function to export organic matter through a surface water connection at all
times of the year to a perennial stream?
4g.4 Does the wetland function to export organic matter through a stuface water connection to a
stream on a seasonal basis?
4h. Buffers: Score the existing buffers on a scale of 1-5 based on the following four descriptions. If the
conditions of the buffers do not fit, score a point higher or lower, depending on whether the buffers are
more or less degraded.
· Forest. scrub, native grassland or open water buffers are present with widths > 100' around 95% of
the circumference.
· Forest, scrub, native grassland or open water buffers are present with widths >100' around >50%
of the circumference, OR the same buffers are present with widths >50' around >50% of the
circumference.
· Forest, scrub, native grassland or open water buffers are present with widths> I 00' around >25%
of the circumference, OR the same buffers are present with widths >50' around >95% of the
circumference.
· No roads, buildings or paved areas within 100' of the wetland for >95% of the circumference.
· No roads, buildings or paved areas within 25' of the wetland for >95% of the circumference OR No
roads, buildings or paved areas within 50' of the wetland for >50% of the circumference
· Paved areas, industrial areas or residential construction (with less than 50' between houses) are
<25' from the wetland for more than 95% of the circumference.
Moderate=2
!&n::!
None=O
Yes=2!,!!!
Yes=l No
Yes==l No?
Yes=l No
Yes=l No
~=2 No
Yes=6 No
Yes=4 No
Yes=4 No
Yes=2 No
Score=5
Score=3
Score=2
Score=2
Score= I
Score=O
Page 4
4i. Connection to Other Habitat Areas:
Select the description which best matches the site being evaluated.
'" Is the wetland connected to or part of a riparian corridor at least 100' wide connecting two or
more wetlands; OR is there an upland connection present >100' wide with good forest or shrub
cover (>25% cover) connecting it with a Significant Habitat Area (>300 yds dimension or >20 ac if
OW)?
* Is the wetland connected to any other Habitat Area (>50 yds dimension) with either (1) a forested
or shrub corridor <100' wide OR (2) a vegetated corridor >100' wide, but with cover >6' taU?
*Is the wetland connected to or part of a riparian corridor between 59-100' wide with scrub/shrub
or forest cover connection to other wetlands.
* Is the wetland connected to any other Habitat Area (>50 yds dimension) with a vegetated corridor
<100' wide with cover <6' taU?
'" Is the wetland and its buffer (if the buffer is <50' wide) completely isolated by development (urban,
residential with a density >21ac, or industrial)?
Now add the scores circled (for Q5a-Q5i above) to get a total. Is the total greater
than or equal to 22 points? 28
Yes=5
Yes=3
Yes=3
Yes=l
Yes=O
Yes: Cat.n
NO: Cat. ill
WElLANDS RATING FIELD DATA FORM BACKGROUND INFORMATION:
Name of rater(s):Lisa Palazzi Affiliation(s)Pacific Rim Soil & Water. Inc. Date: April!. 2007
Name of Wetland (if known): South Site: PEMlPSS wetland (RU3) Government jurisdiction of wetland: Jefferson
Location:: Section 23. Township 29N. Ran2e 2W SOURCES OF INFORMATION: (check all sources that apply)
Site visit:]L USGS Topo map:]L NWI map:_ Aerial Photo:X Soil Survey:X Other:]L Describe: NOSC/WDFW
maDS
WHEN THE FIELD DATA FORM IS COMPLETE, ENTER CATEGORY HERE: n Points: 27
Q.l. ffigh Quality Natural Wetland.
Answer this question if you have adequate information or experience to do so. If not, find someone
with the expertise to answer the questions. Then, if the answer to questions la, lb, and lc are all
NO, contact the Natural Heritage Program ofDNR
la. Human-caused disturbances. Is there significant evidence of human -caused changes to
topography or hydrology of the wetland as indicated by any of the following conditions? (Consider
only changes that may have taken place in the last 5 decades.)
lal. Upstream watershed> 12% impervious
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
181. Wetland is ditched and water flow is not obstructed >>>>>>>>>>>>>>>>>>>>>>>>>>>>
laJ. Wetland has been graded, filled, logged >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1a4. Water in wetland is controlled by dikes, weirs, etc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
laS. Wetland is grazed >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1a6. Other indicators of distwbance (list below) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
The wetland is mapa2ed as oosture. adiacent to Hi2l}wav 101 and narkin2lot fills
lb. Are there populations of non-native plants which are cum:ntly present, covering more than
10% of the wetland, and appearing to be invading native populations? Briefly describe any non-
native plant populations and information sources: Reed canarv~ss
Ie. Is there evidence of human -caused disturbances which have visibly degraded water quality.
Evidence of the. degradation of water quality may include: direct (tmtreated) runoff from roads or
parking lots; presence or historic evidence ofwaste dumps; oily sheens; the smell of organic
chemicals; or livestock use. Briefly describe:
Q.2. Irreplaceable Ecological Functions:
Does the wetland:
- have at least 1/4 acre of organic soils deeper than 16 inches, and the wetland is relatively
tmdisturbed; (NOTE: If the answer is NO because the wetland is disturbed. briefly describe the
disturbance. >>>>>>>>>>>>>>>>>
- OR have a forested class greater than 1 acre >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have characteristics of an estuarine system >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have eel grass, floating Q! non-floating kelp beds? >>>>>>>>>>>>>>>>>>>>>>>>>>>
Circle Answers
No: to all, go to
lb Yes
Yes:go to Q2 No
Yes:go to Q2 No
Yes:go to Q2 No
fi!:go to Q2 No
Yes:go,to Q2 No
fi!:goto Q2 No
Yes:go to Q2
No: go to lc
Yes:go to Q2
No : Possible
Cat. I: contact
DNR- Nat. Her.
Prgnn
No to all: go to
Q.3.
Yes:go to 2a No
Yes:go to 2b No
Yes:go to 2c ~
Yes:go to 2d No
Pagel
1
I
J
1
j
2a. Bogs and Fens: Are any of the three following conditions met for the area of organic soil?
2a.l Are Sphagnum mosses> 30% groundcover AND is cover of species from Table 3 <1O%?
- Is the area of Sphagnum mosses and deep organic soils >~ acre? Yes: Cat.!
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 acre? Yes: Cat. II
No: go to 2a.2
2a.2 Is there an area of organic soil which has an emergent class with at least one species from
Table 2 , AND is cover of species from Table 3 <1O%? Yes: Cat. I
- Is the area of herbaceous plants and deep organic soils > ~ acre?
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 acre? Yes: Cat.II
~: go to 2a.3
2a.3 Is the vegetation a mixture of only herbaceous plants and Sphagnum mosses with no
scrub/slnub or forested classes?
- Is the area of herbaceous plants, Sphagnum, and deep organic soils >~ acre? Yes: Cat. I
- Is the area of herbaceous plants, Sphagnum, and deep organic soils 1/4-1/2 acre? Yes: Cat. II
No: go to Q3
Q.2b. Mature Forested Wetlands Yes: Cat. I
lb. 1 Does 50% of the cover of upper forest canopy consist of evergreen trees older than 80 years
or deciduous trees older than 50 years? (NOTE: Size of trees cannot be used as a surrogate for No: go to 2b.2
age.) Yes: go to 2b.3
2b.2 Does 50% of the cover of forest canopy consist of evergreen trees older than 50 years, AND No: go to Q3
is the structural diversity of the forest high. as characterized by an additional layer of trees 20-49' Yes: Cat. I
tall, shrubs 6-20' tall, , and a herbaceous groundcover?
2b.3 Does <25% of the areal cover in the herbaceous! groundcover or the slnub layer consist of No: go to Q3
invasive or exotic ulant SDecies from the p.19 list?
Q.2c. Estuarine Wetlands Yes: Cat. I
2c.l Is the wetland listed as National Wildlife Refuge, National Park, National Estuary Reserve,
Natural Area Preserve, State Park, or Educational, Environmental, or Scientific Reserves No: go to 2c.2
designated under WAC 332-151? Yes: Cat. I
2c.2 Is the wetland >5 acres; (inclu.ding areas on both sides of the Salmon Creek outlet)
NOTE: If an area contains patches of salt tolerant vegetation that are <600 fiet apart and separated
by mudflats that go dry on a Mean Low Tide, OR separated by tidal channels that are <100 feet
wide, then all the vegetated areas are to be considered together in calculating the wetland area. Yes: go to 2c.3
-ORisthewetland 1-5 acres;
- OR is the wetland <I acre? Yes; go to 2cA
2c.3 Does the wetland meet at least 3 of the following 4 criteria? Yes; Cat. I
- minimum existing evidence of human-related disturbance, such as diking, ditching, filling,
cultivation, grazing, or the presence of non-native plant species;
- surface water connection with tidal saltwater or tidal freshwater,
- at least 75% of the wetland has a 100' buffer ofungrazed pasture, open water, shrub or forest;
- has at least 3 of the following features: low marsh; high marsh; tidal channels; lagoon(s);
woody debris; or contiguous freshwater wetland. No: CaUl
2c.4 Does the wetland meet all four criteria under 2c.3?
Q.2d. Eel Grass and Kelp Beds Yes; Cat. I
2d.l Are eel grass beds present? No: go to 2d.2
2d.2 Are there floating or non-floating kelp bed( s) present with >50% macro-algal cover in the Yes: Cat. I
month of AullUSt or Set>tember? No: Cat. II
OCT PaIte i007
Q.3. Category IV Wetlands
38. Is the wetland less than I acre AND hydrologically isolated AND comprised of one vegetated
class that is dominated (>80% areal cover) by one species from Table 3 or Table 4?
3b. Is the wetland less than 2 acres AND hydrologically isolated AND with one vegetated class
AND with >90% area cover of any combination of species from Table 3?
3c. Is the wetland excavated from upland AND comprised of a pond smaller than 1 acre without a
surface water connection to streams, lakes, rivers, or other wetlands AND with <0.1 acres of
vegetation?
Q.4. Significant Habitat Value.
Answer all questions and enter data requested.
48. Estimate total wetland area, selecting from choices in the near-right column, and score in the
far column:
Enter wetland acreage here: -40+ acres, and source: Could be much l.a.rl{er than 40 acres.
including offsite areas associated with both Salmon and Snow Creeks; ocular estimate from aerial
'Photos
4b. Wetland classes: Circle the wetland classes below that qualify by being greater than ~ acre in
size for each class, and in the case of Open Water, being that size for more than 1 month at a time.
Open Water Aquatic Beds EmelUent Scrub-shrub Forested
COlmt the number of wetland classes above, then score according to the columns to the right
4c. Plant Species Diversity. ~
For each wetland class (at right) that qualifies in 4b above, count the number of
different plant species you can find that cover more than 5% of the ground It is not Aquatic
necessary to name them. Score in column at far right Bed>>>>>
Note: Any plant species with a cover of> 5% qualifies for points within a class,
even those that are not of that class - i.e. a grass species can qualifY for points
in a forested class. Ethergen1>>>>
Scrub
Shrub>>>>>>
Forested>>>>>
4d. Structural Diversity.
If the wetland has a forested class, add I point if each of the following classes is present within the
forested class, AND is larger than 1/4 acre in size: Please note that these systems are offsite, so we
assuming these conditions from aerial photo indications; cannot check directly.
- trees >50' tall
- trees 20'-49' tall
- shrubs
- herbaceous groundcover
Also, add 1 point if there is any "open water" or " aquatic bed" class immediately next to the forested
area (i.e., there is no scrub/shrub or emergent vegetation between them).
Yes: Cat. IV
No: go to 3b
Yes: Cat IV
No: go to 3c
Yes: Cat. IV
~: gotoQ4
Circ1escores
that qualify
acres points
>200 6
40-100 5
10-40 "4
5-10 3
1-5 2
0.1-1 1
<0.1 0
# of
classes 'POints
-r-- 0
1 3
"3 6"
4 8
5 10
~ 'Points
1 Q
2 1
3 2
>3 3
1 0
2-3 1
4-5 2
~ 2
1 0
2 1
3-4 2
.::1 2
1 0
2 1
3-4 2
>4 3
Yes=l No
Yes=1 No
Yes::! No
Yes=! No
Yes=! No
Page 3
4e. Class futerspersion:
Decide from the diagrams below whether interspersion between wetland classes is high, moderate, low,
or none.
_:::<:~:::::::::<::...
...............
":'::':::::'::::;::-:"
none
10_
10_
e...
... .
.... .
. . . . . ~ . ~
.....
............
....::.<.::.':...:..::>:~<<.
:r.:::;::::;~:::r:..
rnoderert.e
moderate
high
4[ Habitat Features
Answer questions below, circle features that apply, and score to right:
*Is there evidence that the open or standing water was caused by beaver activity? >not vet>>>>>>>>
*ls a heron rookery located within 300"1 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
*Are raptor nest(s) located within 300"1 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
* Are there at least 3 standing dead trees (snags) per acre> I 0" DBH (in or adjacent to the
wetland)?>>
* Are there at least 3 downed logs per acre with a diameter of>6" for at least 1 0' in length (in or
adjacent to..)? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
* Are there areas (vegetated or unvegetated) within the wetland that are ponded for at least 4 months
of the year, AND the wetland has not qualified as having an open water class in Q4b (Le. <114 acre
in size)?
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
4g. Connectionto Streams (Score one answer only.)
4g.1 Does the wetland provide habitat for fish at any time of year AND does it have a perennial
smface water coIUlection to a fish bearing stream?
4g.2 Does the wetland provide fish habitat seasonally AND does it have a seasonal surface water
cOIUlection to a fish bearing stream?
4g.3 Does the wetland function to export organic matter through a surface water connection at all
times of the year to a perennial stream?
4g.4 Does the wetland function to export organic matter through a surface water coIUlection to a
stream on a seasonal basis?
4h. Buffers: Score the existing buffers on a scale of 1-5 based on the following four descriptions. If the
conditions of the buffers do not fit, score a point higher or lower, depending on whether the buffers are
more or less degraded.
* Forest, scrub, native grassland or open water buffers are present with widths > 100' around 95% of
the circumference.
* Forest, scrub, native grassland or open water buffers are present with widths >100' around >50%
of the circumference, OR the same buffers are present with widths >50' around >50% of the
circumference.
* Forest, scrub, native grassland or open water buffers are present with widths> 100' around >25%
of the circumference, OR the same buffers are present with widths >50' around >95% of the
circumference.
* No roads, buildings or paved areas within 100' of the wetland for >95% of the circumference.
* No roads, buildings or paved areas within 25' of the wetland for >95% of the circumference OR No
roads, buildings or paved areas within 50' of the wetland for >50% of the circumference
* Paved areas, industrial areas or residential construction (with less than 50' between houses) are
<25' from the wetland for more than 95% of the circumference.
High=3
Moderate=2
Low=l
None=O
Yes=2 No
Yes=l No
Yes=l No?
Yes=INo
Yes=l No
~=2 No
Yes=6 No
Yes=4No
Yes=4No
Yes=2 No
Score=5
Score=3
Score=2
Score=2
Score= 1
Score=O
OCT P~e -iOO?
4i. Connection to Other Habitat Areas:
Select the description which best matches the site being evaluated.
* Is the wetland connected to or part of a riparian corridor at least 100' wide connecting two or
more wetlands; OR is there an upland connedion present >100' wide with good forest or shrub
cover (>25% cover) connecting it with a Significant Habitat Area (>300 yds dimension or >20 ac if
OW)?
* Is the wetland connected to any other Habitat Area (>50 yds dimension) with either (1) a forested
or shrub corridor <100' wide OR (2) a vegetated corridor >100' wide, but with cover >6' tall?
*Is the wetland connected to or part of a riparian corridor between 50-100' wide with scrub/shrub
or forest cover connection to other wetlands.
* Is the wetland connected to any other Habitat Area (>50 yds dimension) with a vegetated corridor
<100' wide with cover <6' tall?
* Is the wetland and its buffer (if the buffer is <50' wide) completely isolated by development (urban,
residential with a density >21ac, or industrial)?
Now add the scores circled (for Q5a-Q5i above) to get a total. Is the total greater
than or equal to 22 points? 27
~
Yes=3
Yes=3
Yes=l
Yes=O
Yes : CaUl
NO: Cat. ill
Page 5
WElLANDS RATING FIELD DATA FORM BACKGROUND INFORMATION:
Name of rater(s):Lisa Palazzi Affiliation(s)Pacific Rim Soil & Water. Inc. Date: Avrill.2007
Name of Wetland (if known): South Site: PEMlPSS wetland (RU4) Govemmentjurisdiction of wetland: Jefferson
Location:: Section 23. Township 29N. Range 2W SOURCES OF INFORMATION: (check all sources that apply)
Site visit:]L USGS Topo map:]L NWI map:_ Aerial Photo:X Soil Swvey:X Other:]L Describe: NOSCIWDFW
~
WHEN THE FIELD DATA FORM IS COMPLETE, ENTER CATEGORY HERE: II Points: 26
Q.l. High Quality Natural Wetland.
Answer this question if you have adequate information or experience to do so. If not, find someone
with the expertise to answer the questions. Then, if the answer to questions la, lb, and Ie are all
NO, contact the Natural Heritage Program ofDNR.
la. Human-caused disturbances. Is there significant evidence of human -caused changes to
topography or hydrology of the wetland as indicated by any of the following conditions? (Consider
only changes that may have taken place in the last 5 decades)
lal. Upstream watershed> 12% impervious
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
182. Wetland is ditched and water flow is not obstructed >>>>>>>>>>>>>>>>>>>>>>>>>>>>
la3. Wetland has been graded, filled, logged >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
la4. Water in wetland is controlled by dikes, weirs. etc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
laS. Wetland is grazed >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1a6. Other indicators of disturbance (list below) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
The wetland is managed as nasture. adiacent to 2-lane paved road and old fll1lI1Stead
lb. Are there populations of non-native plants which are currently present, covering more than
10% of the wetland, and appearing to be invading native populations? Briefly describe any non-
native plant populations and information sources: Reed canarygrass
Ie. Is there evidence of human -caused disturbances which have visibly degraded water quality.
Evidence of the degradation of water quality may include: direct (untreated) runoff from roads or
parking lots; presence or historic evidence of waste dumps; oily sheens; the smell of organic
chemicals; or livestock use. Briefly describe: .
Q.2. Irreplaceable Ecological Functions:
Does the wetland:
- have at least 1/4 acre of organic soils deeper than 16 inches, and the wetland is relatively
undisturbed; (NOTE: If the answer is NO because the wetland is disturbed, briefly describe the
disturbance. >>>>>>>>>>>>>>>>>
- OR have a forested class greater than 1 acre >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have characteristics of an estuarine system >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- OR have eel grass, floating Q! non-floating kelp beds? >>>>>>>>>>>>>>>>>>>>>>>>>>>
Circle Answers
No: to all, go to
lb Yes
Yes:go to Q2 ~
fi!:go to Q2 No
fi!:go to Q2 No
Yes:go to Q2 No
Yes:go to Q2 No
Yes:goto Q2 No
fi!:go to Q2
No: go to lc
Yes:go to Q2
No : Possible
Cat. I: contact
DNR- Nat. Her.
Prgrm
No to all: go to
Q.3.
Yes:go to 2a No
Yes:go to 2b ~
Yes:go to 2c No
Yes:go to 2d No
OCT- 4 2007
Pagel
2a. Bogs and Fens: Are any of the three following conditions met for the area of organic soil?
2a.l Are Sphagnum mosses> 30% groundcover AND is cover of species from Table 3 <1O%?
- Is the area of Sphagnum mosses and deep organic soils >Vz acre? Yes: Cat.!
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 aI;re? Yes: Cat. n
No: go to 2a.2
28.2 Is there an area of organic soil which has an emergent class with at least one species from
Table 2 , AND is cover of species from Table 3 <1O%?
- Is the area of herbaceous plants and deep organic soils> Vz aae? Yes: Cat. I
- Is the area of Sphagnum mosses and deep organic soils 1/4-1/2 acre? Yes: Cat.n
No: go to 2a.3
2a.3 Is the vegetation a mixture of only herbaceous plants and Sphagnum mosses with no
scrub/shrub or forested classes?
- Is the area of herbaceous plants, Sphagnum, and deep organic soils >Vz acre? Yes: Cat. I
- Is the area of herbaceous plants, Sphagnum, and deep organic soils 1/4-1/2 acre? Yes: Cat. n
No: go to Q3
Q.2b. Mature Forested Wetlands Yes: Cat. I
2b.1 Does 50% of the cover of upper forest canopy consist of evergreen trees older than 80 years
or deciduous trees older than 50 years? (N01E: Size of trees cannot be used as a SWTogate for No: go to 2b.2
age.) Yes: go to 2b.3
2b.2 Does 50% of the cover of forest canopy consist of evergreen trees older than 50 years, AND No: go to Q3
is the structural diversity of the forest high, as charaI;terized by an additional layer of trees 20-49' Yes: Cat. I
tall, shrubs 6-20' WI, , and a herbaceous groundcover?
2b.3 Does <25% of the areal cover in the herbaceous! groun<lcover or the shrub layer consist of No: go to Q3
invasive or exotic plant soecies from the p.19 list?
Q.2c. Estuarine Wetlands
2c.1 Is the wetland listed as National Wildlife Refuge, National Park, National Estuary Reserve, Yes: Cat. I
Natural Area Preserve, State Park, or Educational, Environmental, or Scientific Reserves No: go to 2c.2
designated under WAC 332-151? Yes: Cat. I
2c.2 Is the wetland >5 acres; (incbuling llI'eas on both si4es ofth Salmon Creek outlet)
NOTE: If an area contains patches of salt tolerant vegetation that are <600 feet apart and separated
by mudflats that go dry on a Mean Low Tide, OR separated by tidal channels that are <100 feet
wide, then all the vegetated areas are to be considered together in calculating the wetland area. Yes: go to 2c.3
- OR is the wetland 1-5 acres;
- OR is the wetland <1 acre? Yes: go to 2eA
2c.3 Does the wetland meet at least 3 of the following 4 criteria? Yes: Cat. I
- minimum existing evidence of human-related disturbance, such as diking, ditching, filling,
cultivation, grazing, or the presence of non-native plant species;
- surface water connection with tidal saltwater or tidal freshwater;
- at least 75% of the wetland has a 100' buffer of ungrazed pasture, open water, shrub or forest;
- has at least 3 of the following features: low marsh; high marsh; tidal channels; lagoon( s);
woody debris; or contiguous freshwater wetland. No: Cat.n
2c.4 Does the wetland meet all four criteria under 2c.3?
Q.2d. Eel Grass and Kelp Beds Yes: Cat. I
2d.l Are eel grass beds present? No: go to 2d.2
2d.2 Are there floating or non-floating kelp bed(s) present with >50% macro-a1gal cover in the Yes: Cat. I
month of AmIDst or Sentember? No: Cat. n
Page 2
Q.3. Category IV Wetlands
3a. Is the wetland less than 1 acre AND hydrologically isolated AND comprised of one vegetated
class that is dominated (>80% areal cover) by one species from Table 3 or Table 4?
3b. Is the wetland less than 2 acres AND hydrologically isolated AND with one vegetated class
AND with >90% area cover of any combination of species from Table 3?
3c. Is the wetland excavated from upland AND comprised of a pond smaller than 1 acre without a
surfuce water connection to streams, lakes, rivers, or other wetlands AND with <0.1 acres of
vegetation?
Q.4. Significant Habitat Value.
Answer all questions and enter data requested.
4a. Estimate total wetland area, selecting from choices in the near-right colunm, and score in the
far colunm:
Enter wetland acreage here: -20+ acres, and source: Could be lar~er than estimate. including
offsite wetland areas west of Salmon Creek and tributaries; ocular estimate from aerialnhotos
4b. Wetland classes: Circle the wetland classes below that qualifY by being greater than Y.. acre in
size for each class, and in the case of Open Water, being that size for more than 1 month at a time.
Open Water AquaticBeds Emere:ent Scrub-shrub Forested
Count the number ofwet1and classes above, then score according to the columns to the right
4c. Plant Species Diversity.
For each wetland class (at right) that qualifies in 4b above, count the nwnber of
different plant species you can find that cover more than 5% of the grOlmd. It is not
necessary to name them. Score in colunm at far right
Class
Aquatic
Bed>>>>>
Note; Any plant species with a cover of> 5% qualifies for points within a class,
even those that are not of that class -- i.e. a grass species can qualify for points
in a forested class.
Emergent>>>>
Scrub
Shrub>>>>>>
Forested>>>>>
4d. Structural Diversity.
If the wetland has a forested class, add 1 point if each of the following classes is present within the
forested class, AND is larger than 1/4 acre in size: Please note that these systems are offsite, so we
assuming these conditions from aerial photo indications; cannot check directly.
- trees >50' tall
- trees 20'49' tall
- shrubs
- herbaceous groundcover
Also, add 1 point if there is any "open water" or " aquatic bed" class immediately next to the forested
area (i.e., there is no scrub/shrub or emergent vegetation between them).
Yes: Cat IV
~: go to 3b
Yes: Cat IV
No: go to 3c
Yes: Cat IV
No: go to Q4
Circle scores
that qualifY
acres ooints
>iOO 6
40-200 5
10-40 4
5-TO "3
1-5 2
0.1-1 1
<0.1 0
#of
classes ~
-r- 0
2 3
"3 "6
4 8
5 10
~ points
1 0
2 1
3 2
>3 3
1 0
2-3 1
4-5 2
~ ..1
1 0
2 1
3-4 2
~ ..1
1 0
2 1
3-4 2
>4 3
Yes=l No
Yes=l No
Yes=l No
Yes=l No
Yes=L~ ..
..
OCT
~ ,," ."
'i...<.:..1
1
J
4e. Class Interspersion:
Decide from the diagrams below whether intersoersion between wetland classes is high, moderate, low,
or none.
none
10"""
10",,"
...~
...~.
...-:.:-........
...~:<;.:.~....~.>.:"'.:
:-......~....~.....
:~:~:.:::::::-..:~......
rTle>dera.1::e
moderate
high
1
4f. Habitat Features
Answer questions below, circle features that apply, and score to right:
*Is there evidence that the open or standing water was caused by beaver activity? >>>>>>>>>>>>>>
*ls a heron rookery located within 3oo'? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
* Are raptor nest(s) located within 3oo'? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
*Are there at least 3 standing dead trees (snags) per acre >10" DBH (in or adjacent to the
wetland)?>>
* Are there at least 3 downed logs per acre with a diameter of>6" for at least 10' in length (in or
adjacent to..)? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
* Are there areas (vegetated or unvegetated) within the wetland that are ponded for at least 4 months
of the year, AND the wetland has not qualified as having an open water class in Q4b (i.e. <114 acre in
srze)?>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
J
4g. Connection to Streams (Score one answer only.)
4g.1 Does the wetland provide habitat for fish at any time of year AND does it have a perennial
surface water connection to a fish bearing stream?
4g.2 Does the wetland provide fish habitat seasonally AND does it have a seasonal surface water
connection to a fish bearing stream?
4g.3 Does the wetland function to export organic matter through a surface water connection at all
times of the year to a perennial stream?
4g.4 Does the wetland function to export organic matter through a surface water connection to a
stream on a seasonal basis?
4h. Buffers: Score the existing buffers on a scale of 1-5 based on the following four descriptions. If the
conditions of the buffers do not fit, score a point higher or lower, depending on whether the buffers are
more or less degraded
* Forest, scrub, native gtassland or open water buffers are present with widths> 100' around 95% of
the circumference.
* Forest, scrub, native grassland or open water buffers are present with widths> 100' around >50%
of the circumference, OR the same buffers are present with widths >50' around >50% of the
circumference.
* Forest, scrub, native grassland or open water buffers are present with widths> I 00' around >25%
of the circumference, OR the same buffers are present with widths >50' around >95% of the
circumference.
* No roads, buildings or paved areas within 100' of the wetland for >95% of the circumference.
* No roads, buildings or paved areas within 25' of the wetland for >95% of the circumference OR No
roads, buildings or paved areas within 50' of the wetland for >50% of the circumference
* Paved areas, industrial areas or residential construction (with less than 50' between houses) are
<25' from the wetland for more than 95% of the circumference.
High=3
Moderate=2
Low=l
None=O
Yes=2 ~
Yes=l No
Yes= 1 r!!!1
Yes=INo
Yes=l ~
Yes=2 No
Yes=6 No
Yes=4No
Yes=4 No
X!:!=2 No
Score=5
Score=3
Score=2
Score=2
Score= 1
Score=O
Page 4
4i. Connection to Other Habitat Areas:
Select the description which best matches the site being evaluated.
* Is the wetland connected to or part of a riparian corridor at least 100' wide connecting two or
more wetlands; OR is there an upland connection present >100' wide with good forest or shrub
cover (>25% cover) connecting it with a Significant Habitat Area (>300 yds dimension or >20 ac if
OW)?
* Is the wetland connected to any other Habitat Area (>50 yds dimension) with either (I) a forested
or shrub corridor <100' wide OR (2) a vegetated corridor> 100' wide, but with cover >6' tall?
*Is the wetland connected to or part of a riparian corridor between 59-100' wide with scrub/shrub
or forest cover connection to other wetlands.
* Is the wetland connected to any other Habitat Area (>50 yds dimension) with a vegetated corridor
<100' wide with cover <6' tall?
'" Is the wetland and its buffer (if the buffer is <50' wide) completely isolated by development (urban,
residential with a density >2/ac, or industrial)?
Now add the scores circled (for Q5a-Q5i above) to get a total. Is the total greater
than or equal to 22 Po.ints? 26
Yes=5
Yes=3
Yes=3
Yes=!
Yes=O
Yes : Catll
NO: Cat. ill
APPENDIX IV
PROJECT MAPS
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T-
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Map Unit Map Unit Name
AgE Agnew silt loam, 30 to 50 percent slopes
AlC Alderwood gravelly sandy loam, 0 to 15 percent slopes
AlD Alderwood gravelly sandy loam, 15 to 30 percent slopes
ArnC Alderwood gravelly loam, 0 to 15 percent slopes
BdD Beausite-Alderwood complex, 0 to 30 percent slopes
Bh Belfast silt loam, heavy variant
cm Cassolary sandy loam, 15 to 30 percent slopes
CrnC Clallam gravelly sandy loam, 0 to 15 percent slopes
CmD Clallam gravelly sandy loam, 15 to 30 percent slopes
Cu Cut and fill land
EvC Everett gravelly sandy loam, 0 to 15 percent slopes
HuC Hoypus gravelly loamy sand, 0 to 15 percent slopes
HuD Hoypus gravelly loamy sand, 15 to 30 percent slopes
HvC Hoypus gravelly sandy loam, 0 to 15 percent slopes
Lu Lummi silt loam
Mm McMurray and Mukilteo peats
SuB Swantown gravelly loam, 0 to 8 percent slopes
Td Tidal marsh
TuC Tukey gravelly loam, 0 to 15 percent slopes
W Water
Discovery Bay LiDAR coverage: Note old drainage ditch patterns and old scars of
meandering stream channels that connect the Snow Creek and Salmon Creek systems
r--::::~-'-_._'------p-----'~-~~0
I., r;.. , ~ t. n_~ ~l'_.-""\ \ I
fIt' H tL...,'.\
IIUjr-------illl\.
\\r-\\i '\\1 1~1
H \ \._.\ \. OCT - 4 2007 \ I LJ j 1\
i\ LJ t~J.l i L.-/
l _.~,,__...-J J
COUNTY
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60
o 60 120
SCALE: 1" == 12ft
I
180
''4b
REFERENCE NO.
APPUCANT:
WASHINGTON DEPT.. of FISH & WILDLIFE
SALMON CREEK, DISCOVERY SAY
NORTH SITE
WETLANDS AND SOIL LOGS
AT: DISCOVERY SAY WASHINGTON
DATE:1 /29/2007 SHEET 2 OF' 4
.I/(b
"
..-Y
o
~
1. ENlIRE AREA OF CONSTRUCllON HAS BEEN DELINEATED
AS WETlANDS.
2. SOIL LOGS AREA AS SHOWN ON DRAWING.
60
o
SCALE:
OEP-..
MLLW'
~+r.~ \) Vlit I~'-
// /// / ~ .1<tii:~ {/~- 6-
(aU1~~ . ~
~~ti/Is ~ )
r II .
tk
REFERENCE NO.
APPU CAN T:
WASHINGTON DEPT.. of ASH &: WILDUFE
SALMON CREEK. DISCOVERY SAY
SOUlrI SITE
WETlANDS PLAN
AT: DISCOVERY BAY I WASHINGTON
DATE:1 /31 /2007 SHEET 3 OF 4
ENG. PROJECT NO. IN: F17: 06-1
~y
.,
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Ed ~~ 1<~i1."1 U.,rt 6 MLLW
O I
f1 CAlLOUts. 60
1. . CONTRACTOR TO PROVIDE HAUL ROAD DESIGN. ALL MATERIAlS TO BE
REMOVED AT COMPLETION OF PROJECT.
2.. CONTRACTOR TO DESIGN AND INSTALL TEMPORARY BRIDGE AND
ABUTMENTS- BRIDGE TO BE REMOVED UPON COMPLETION OF HAUL
3. INSTALL SILT FENCE AT EDGE OF FLAGGED WEllANOS.
IiOO
~ ,
?(
, 1
o 60 \20
SCALE: 1" = 120-
I
180
~
1. AREA OF All ;::: 160.235 SF. AVERAGE All DEPTH TO BE 4 FEET.
2. MAXIMUM ALL SLOPE TO BE 3H: lV. CRAOtNG TO PROVIDE POSITIVE
DRAINAGE.
3.. HYDROSEED SITE 1M MEDI A Ta Y AFTER PROJECT COMPLETION
4. HAUL ROAD ROCK TO BE REMOVED. SCARIFIED AND HYDROSEEDED.
ENG. PROJECT NO. IN: F17: 06-1
REFERENCE NO..
APPUCANT:
WASHINGTON DEPT. of FISH &: WILDLIFE
SALMON CREEK, DISCOVERY SAY
SPOILS SITE
WETLANDS
AT: DISCOVERY BAY , WASHINGTON
DATE:1 /29/2007 SHEET 4 OF 4