HomeMy WebLinkAboutWetland Delineation 701044004 (2)
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WESTECH COMPANY
Environmental Consulting - Site Permitting
WETLAND DELINEATION AND MITIGATION PLAN
DABOB POST OFFICE ROAD
PARCEL 701044004
JEFFERSON COUNTY, WASHINGTON
February 2006
G. Bradford Shea, Ph.D.
Submitted to:
JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT
621 Sheridan Street
Port Townsend, Washington 98368 RECEIVED
Submitted by:
WESTECH COMPANY
P.O. Box 2876
Port Angeles, Washington 98362
JUt 1 8 2006
JEffERSON COUNTY OeD
P.O. Box 2876 - Port Angeles, Washington 98362 - Telephone: (360) 565-1333 - Fax: (360) ,452-6708
email: bshea@tenforward.com
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WETLAND DELINEATION REPORT
DASOS POST OFFICE ROAD
PARCEL 701044004
JEFFERSON COUNTY, WASHINGTON
February 2006
G. Bradford Shea, Ph.D.
Submitted to:
JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT
621 Sheridan Street
Port Townsend, Washington 98368
Submitted by:
WESTECH COMPANY
P.O. Box 2876
Port Angeles, Washington 98362
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CONTENTS
I CHAPTER/SECTION Page No.
I 1.0 INTRODUCTION 1
I 2.0 METHODS 4
3.0 WETLAND DELINEATION RESULTS 6
I 3.1 Existing Conditions 6
3.2 Description of Wetlands 8
3.3 Land Uses and Habitat Values 9
I 3.4 Wetland Types and Buffers 9
4.0 MITIGATION PLAN 10
I 4.1 Regulatory Setting 10
4.2 Project Impacts 10
4.3 Plan Components 10
I 4.4 Detailed Mitigation Measures 11
4.5 Planting Plan 13
4.6 Implementation and Timing 13
I 4.7 Mitigation and Restoration Monitoring 14
4.8 Contingency Plan 14
I 5.0 CONCLUSIONS AND RECOMMENDATIONS 15
5.1 Conclusions 15
I 5.2 Recommendations 15
6.0 REFERENCES 16
I 7.0 TABLES
Table 1. Upland and Wetland Vegetation 19
I Table 2. Site Soils 20
Table 3. List of Native Plants for Buffer Zone, Stream and Wetland
Restoration and Enhancement 21
I FIGURES
Figure 1. Location Map 2
I Figure 2. Vicinity Map 3
Figure 3. Site Map Showing Stream and Wetland Boundaries 7
Figure 4. Mitigation/Planting Plan 12
I APPENDICES
Appendix A - Wetland Maps and Data Forms A-1
I Appendix B - Site Photographs B-1
I WW922DBWD,TOC/020106mas
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1.0 INTRODUCTION
The property described as Parcel 701044004, located on Government Lot 4 in Jefferson
County, Washington, is an 8.92 acre parcel of land owned by Ms. Jeanette Mifsud and
Mr. Joseph Vaughan. The property is located in the SE quarter of Section 4 of Township
27 North, Range 1 West (Figures 1, 2) and consists of one parcel designated as APN
#701044004. The owners have applied to Jefferson County for a building permit for a
single family residence and associated septic system, plus a ,shop building.
The property at Dabob Post Office Road was checked for critical areas by Westech
Company (Westech) and found to contain two streams and two associated wetlands. One
Type 3 stream was found on the north side of the parcel and a Type 4 stream was found
in the southeast corner. Category III wetlands were found to be associated with both
streams. Ms. Mifsud and Mr. Vaughan contracted with Westech to delineate those
wetlands and determine wetland type and buffer zones. Section 3.0 of this report
contains results of the delineation.
Parcel maps were obtained that had been previously conducted by Jefferson County.
Design studies and maps for septic approval have been prepared by Mr. John Fleming,
P.E. Mr. Fleming also identified and marked the property lines and provided brushed
trails for access at some locations. Field investigation of streams and wetlands was
conducted by Dr. Bradford Shea and Mr. James McDougall during the period October
through December of 2005 with follow-up by Dr. Shea during January 2006.
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2.0 METHODS
Wetlands were delineated in the field based on field methods recommended in the
Washinaton State Wetlands Identification and Delineation Manual (DOE 1997). Wetland
rating was accomplished according to the Guidelines of the Washinaton State Wetlands
Ratina System (Western Washinaton) (DOE 1993). Methods were essentially those
recommended by the U.S. Army Corps of Engineers for Routine On-Site Field Method of
Delineation of Wetlands (U.S. ACOE 1989). Guidelines and requirements of the
Jefferson County Gritical Areas Code were applied as applicable (Unified Development
Code, Section 3, Land Use Districts 2001).
Wetland plants were primarily identified in the field, with subsequent collection and keying
when necessary. Plants were identified using the following sources:
Cooke 1997
Guard 1995
Pojar and MacKinnon 1994
Hitchcock and Cronquist 1973
Lyons 1997
Taylor 1995
Keying of plants using magnifying lenses and dissecting microscope was used as
necessary. Determination of wetland indicator status utilized regional keys published by
U.S. Fish and Wildlife Service (USFWS 1988).
Soils were determined through field examination. Soils were dug or augured to depths of
up to 18 inches using a wetland shovel, a 24 inch soil probe and a standard augur. Soil
consistency was determined by feeling for grain size and texture. Soil moisture was
determined at that time. In the event of saturated conditions in the hole, depth to
standing water was noted. Soil color was determined through comparison of field
samples with standard Munsell Color Charts (Munsell 1994). Soil was also examined for
presence of mottles, gley and other indicators of anaerobic soil oxidation.
Hydrologic conditions were determined through examination of topographic relief and
drainage patterns. Soil moistness was determined by hand as indicated above and in the
event of standing water, depth to standing water was noted.
Initial field surveys were carried out by Dr. Shea and Mr. McDougall in October through
December of 2005. These surveys included identification of plants, wetland habitats,
soils and hydrology. A follow-up field survey was conducted by Dr. Shea in January
2006.
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Wetlands were determined based on the Routine On-Site Field Method used by
Washington Department of Ecology and the U.S. Army Corps of Engineers. Wetlands
were determined by a combination of vegetation, soil and hydrology indicators. Specific
transect and quadrat points were sampled along apparent wetland edges. Various points
were sampled for vegetation, soil and hydrology in order to determine wetland
boundaries. Appendix A contains wetland maps and data forms for one typical sample
point from each of the delineated wetlands.
Wetlands were staked in the field by 24 inch wooden stakes. Wetland boundaries in
forested areas were indicated by use of "Wetland Delineation Boundary" flagging tape
placed at appropriate points in trees and shrubs. All boundaries were staked and/or
flagged every 20-25 feet. Wetland buffer zones were determined based on field
measurements and regulatory requirements and were staked in the field and marked with
orange and black striped flagging every 40-50 feet.
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3.0 WETLAND DELINEATION RESULTS
3.1 Existina Conditions
The Site is located on nearly level soils with the eastern end having a steeper gradient.
Elevation is roughly 10-25 feet above mean sea level (msl) in the western portion of the
Site (near DabobfTarboo Bay). The main portion of the property is less than 20 feet msl,
but the eastern end rises in elevation to about 100 feet msl. The Site vegetation is
composed of a large field area with trees and shrubs near the streams and wetlands. The
east end of the parcel is densely forested and contains both deciduous and .coniferous
trees. The proposed house site is within the field area as shown in Figure 3.
Westech Company has located two wetlands on the Site that are oriented around the two
streams. (Figure 3) The Type 3 stream found on the north half of the parcel has a shrub-
scrub wetland surrounding it with field wetland areas away from the stream. This wetland
varies from 40 to 150 feet wide extending south from the stream channel. Only the south
side of this stream was delineated since the home-site is on that side of the stream. The
other wetland is located in the southeast corner of the parcel and is associated with a
Type 4 stream. It was found to contain a forested wetland with sections of shrub-scrub
wetland. Only the north side of this stream was delineated since the south side was found
to be off of the property. This wetland's width averages approximately 50 feet from the
stream channel.
Vegetation
Site vegetation consists of mixed shrub and field grasses in the upland areas and forest,
shrub-scrub and emergent grasses and sedges in the wetland areas. Upland areas are
dominated by Douglas fir and big-leaf maple, especially on the eastern hillside. Forested
wetlands are dominated by alder and willows, with some western red cedar. Understory
plants in wetlands include salmonberry, horsetail, reed canarygrass and Nootka rose. A
more complete list of plants is included in Table 1.
Soils
Soils on the Site are of the Alderwood-Sinclair soil association (SCS 1975). These are
generally moderately well drained, gravelly soils on slopes underlain by compact glacial
till. The soils of the Site are of the Kitsap series, which generally consist of soils that have
been formed in glacial lacustrine or marine sediments on upland benches, terraces,
canyon slopes and ocean bluffs. Slopes range from 0 to 50 percent and annual
precipitation ranges from 25 to 45 inches. The specific soil type mapped on the Site is
listed below:
1) Kitsap silt loam, 0 to 15 percent slopes (KtC). This soil is found in most places to
have slopes that range from 4 to 9 percent. It is moderately well drained and the
permeability is very slow. Runoff is slow to medium and the hazard of soil erosion
is slight to moderate. The color to a depth of four inches is dark brown to grayish
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brown with a silty texture. From 4 to 14 inches, a dark yellowish-brown silt loam
can be found. A dark grayish-brown silt loam lies below 14 inches and above 21
inches. Included with this soil in mapping are small areas of Kitsap gravelly loam, 0
to 30 percent slopes, and small areas of Alderwood, Sinclair, Cassolary, Everett,
Hoypus, and Indianola soils.
Hydrology of the Site consists of two streams that originate from groundwater seeps.
These streams flow southwest across the property, passing under Dabob Post Office
Road via culverts and emptying into Tarboo Bay. There does not appear to be any
blockage or obstruction of the two streams that would cause unnecessary flooding. When
the streams reach the relatively flat areas at the west end of the parcel, the water slows.
Over time, this may have resulted in deposits of fine sediments that helped create the two
wetlands because of slow permeability of the on-site soils.
Hvdroloav
The Hydrology of the Site is that of a gradually sloping parcel of land fed by underground
springs. This water originates on the hillside to the east, running westward to Tarboo
Bay. The emerging spring water forms two streams and two adjacent wetland areas.
The streams cross Dabob Post Office Road at the west end of the parcel draining via
culverts into Tarboo Bay.
3.2 Description of Wetlands
There are two wetlands found on the Site; one located at the eastern end of the parcel
and another located going through the northwest portion of the parcel. This is shown on
Figure 3. The wetland to the east is mostly a forested wetland with shrub-scrub vegetation
included in the more open areas. Large patches of Himalayan blackberry can be found in
both wetlands.
Wetland 1
The wetland located at the northwest portion of the property consists of shrub-scrub
vegetation with large alder trees. This wetland borders a Type 3 stream that flows to the
southwest. Large patches of Himalayan blackberry can be found throughout this wetland,
but it is more concentrated towards the southern portion of the property. Salmonberry and
horsetail are the most dominant wetland plants with piggyback plant included as well.
Wetland 2
The vegetation of this wetland is categorized as a forested wetland with shrub-scrub
species found at the northwestern edge. This wetland borders a Type 4 stream. Large
coniferous and deciduous trees such as red alder and western red cedar are located
within this wetland. The understory includes piggyback plant, horsetail, and salmonberry
with sedges in the wettest areas.
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Northern Stream Channel (Tvpe 3)
This stream appears to be perennial (year around) and flows through a well defined
channel from east to west. The channel is generally only two-four feet in width with a low
bank one-three feet in height. In some areas the channel is partially blocked by silt or
vegetation. Representatives of Washington Department of Natural Resources (DNR) and
Washington Department of Fish and Wildlife (VVDFW) checked the stream and found
small fish near the mouth. Based on that finding, these agency personnel classified the
stream as a Type 3 stream (Fleming 2005, personal communication).
Southern Stream Channel (Tvpe 4)
This stream appears to originate from groundwater seeps located on the southeastern
portion of the property. It appears to be a seasonal or perennial stream, most likely a
Type 4, although if the seeps generally dry up during summer months, it may be a Type 5
stream.
3.3 Land Uses and Habitat Values
The Site is currently an undeveloped property. The owners plan to construct a single
family residence and associated drainfield. A shop building will also be constructed near
the house-site. The Site contains a large field situated between the two streams in the
center of the property. A large wooded area exists at the east end of the parcel where
steeper slopes are present. Deciduous trees border the two streams with large patches of
blackberry and salmonberry near the edge of the field. The presence of both field and
forest areas indicates moderately good habitat for mammals, birds and many other
animals.
The wetlands on the Site appear to provide habitat for small mammals and birds. Larger
mammals including black-tailed deer and birds such as migratory waterfowl inhabit the
area. Fish were not observed using the streams, but Mr. Fleming stated that WDFW had
found fish in the mouth of the Type 3 stream located in the northwest portion of the
property. The wetlands appear to be year-round in terms of saturation and generally do
not appear to contain standing water except during winter months.
3.4 Wetland Tvpes and Buffers
The two wetlands on the Site appear to be Category III wetlands. They are diverse and
contain mostly native species. Wetland size and location is shown in Figures 2 and 3.
These wetlands appear to be above the regulatory threshold in size. A 50 foot buffer is
required for development of a single family residence. Flagging indicating that size buffer
zone has been placed around the south side of the northernmost wetland and the north
side of the southernmost wetland. Also included are 100 foot buffers measured from the
two streams as per Jefferson County Code requirements.
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4.0 MITIGATION PLAN
4.1 Reaulatorv Settina
This Mitigation Plan is intended to offset potential impacts occurring from placement of an
access driveway and a portion of the proposed home-site within the buffer zone of
Category III wetlands and the Type 3 stream which crosses the northern portion of the
property. The Applicant has submitted a Road Approach application for the driveway and
will submit a Variance Application to JeffersonCounty. This Mitigation Plan is intended to
provide mitigation measures to offset impacts which are caused by the proposed project.
4.2 Proiect Impacts
Potential impacts of the proposed project include the following:
1) Elimination of vegetation along the driveway (12 feet in width for a distance
of approximately 350-400 feet). The first 250-300 feet of this driveway will
be within the wetland buffer.
2) Elimination of most native vegetation at the house-pad including
approximately 1,000 square feet within the buffer zone.
3) Disturbance and removal of some vegetation during installation of the
drainfield. This is expected to be relatively minor short-term disturbance.
4) Potential increased storm-water runoff and possible erosion due to
construction activities and increased impervious surface.
These impacts can be offset as described in the sections below. The mitigation
measures developed in this Plan are intended to fully offset impacts and to enhance the
existing buffer habitat through additional plantings and implementation of erosion control
measures.
4.3 Plan Components
The components of this Mitigation Plan are as follows:
1) Control potential erosion that may effect wetlands and streams through
project timing, emplacement of control measures and revegetation
2) Planting vegetation including shrubs and trees within planned areas in the
buffer zone to enhance stream and wetland habitat and to further protect
the streams and wetlands
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3) Utilizing proper drainage techniques along the driveway and at the home-
site.
These Plan components are described in detail in Section 4.4 below.
4.4 Detailed Mitiaation Measures
The detailed mitigation measures corresponding tothe Plan Gomponentslisted above are
as follows:
1 a. Conduct grading and construction prior to October 1 and after April 1 to
avoid construction during the rainy season and consequent increased risk
of erosion and siltation.
1 b. Place a silt-fence at the downhill edge of the home construction site to
contain soil and sediments which might otherwise reach the stream or
wetlands.
1c. Utilize other erosion control devices (jute netting, straw bales, etc.) as
necessary if erosion is observed on the Site during construction.
1d. Revegetate graded areas as quickly as possible. Cover graded areas with
straw, netting or other stabilizer if to be left uncovered for more than seven
days during the dry season or more than two days during the rainy season.
2a. Planting of trees and shrubs should be carried out in the areas indicated in
Figure 4. Native species should be used in conformance with those listed in
Table 3.
2b. Planting should be carried out by experienced persons. Plants may be
obtained from a native plant nursery or from other sources. Plants should
be watered during the first dry season if planted during the late spring or
summer. Recommended planting time would be early fall (late September
- October) so that fall and winter rains will encourage successful initial root
establishment.
3a. Drainage requirements should be specified by a qualified Civil Engineer.
There is a large quantity of water which apparently drains down from the
hills to the east. While much of this is carried in the streams, the presence
of fringe wetlands indicates that substantial amounts of near surface
ground-water may pass near the home-site. French drains, drywells or
similar measures may be necessary to divert and direct this water around
the home-site and back into natural patterns.
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3b. The driveway is mainly oriented upslope to down-slope (east-west),
however, there is one area where the driveway will travel across the
gradient. A culvert may be advisable in this area to maintain a relatively dry
access and prevent erosive washouts.
4.5 Plantina Plan
Revegetation and additional vegetation planting will occur as an integral, part ,of ,the
project. Newly graded construction areas will be re-vegetated as quickly as possible
following the completion of construction. These areas will be reseeded with a native
grass seed mixture to stabilize soils and reduce erosion or sedimentation which may
otherwise affect wetlands or streams.
Additional trees and shrubs will be planted within the buffer zone as indicated in Figure 4
and Table 3. A total of 45 trees and 36 shrubs (or understory type small trees) will be
planted as specified in Table 3. Trees will be placed on a minimum of ten (10) foot
centers. Shrubs will be spaced at least six (6) feet apart within the planting areas. Plants
should be planted in a random configuration within each area to encourage a natural
appearance, however, plants have been divided into areas based on likely soil moisture
and should not be substituted into other areas.
For planting of new species, the buffer areas (and some adjacent disturbed wetland) have
been divided into three areas for planting. Area 1 is located on the north side of the
stream within the stream buffer and includes some wetland habitat. Area 2 is dryer and
plant species to be planted will include both facultative (FAC) and facultative upland
(FACU) plants. Area 3 includes buffer zone along the road and a borderline, disturbed
wetland area which is now overgrown with the invasive FACU species, Himalayan
blackberry. These should be removed to the extent feasible as indicated below and new
plants added as specified in Table 3.
In Area 3, existing non-native Himalayan blackberry plants should be removed prior to
planting specified trees and shrubs. Removal of plants should be by hand methods or
hand carried power tools to avoid significantly disturbing top-soils within the buffer zone.
4.6 Implementation and Timina
Project construction should occur after April 1 but before October 1 if at all feasible. If
work is conducted during the rainy season, all erosion control measures should be in
place prior to grading or construction. Plantings within the buffer zone should be carried
out in early spring (March through April) or early fall (late September through October) if
possible. If plantings occur during summer months, supplemental watering may be
necessary.
WW922DBWD/020206ms
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4.7 Mitiaation and Restoration Monitorina
Monitoring of success for the enhanced and restored areas should be carried out on the
following schedule:
1) Following construction, plant new native trees and shrubs within the first
180 days, either during the early spring (March-April) or the early fall (late
September-October) seasons. Plant trees and shrubs according to the
Planting Plan (Table 3 and Figure 4).
2) Prepare an initial monitoring report approximately six months to one year
following plantings, evaluating the success of the plantings. The report
should address the success of plantings, health and productivity of the new
plants and any problems with erosion control. Any plant mortality should be
noted and corrected if plant survival falls below 90 percent during the first
year or below 85 percent in successive years.
3) Prepare a follow-up monitoring report at the end of the second year
following construction and buffer mitigation/enhancement. Note any
corrective actions which are necessary to maintain the overall health and
productivity of the streams, wetlands and buffer zones.
All reports should be submitted to Jefferson County for review and approval.
4.8 Continaencv Plan
A Contingency Plan should be prepared in the event that the plantings or erosion control
measures are unsuccessful. This should occur if planting survival is less than 70 percent
over the first two years or if major sedimentation is occurring which affects the streams or
wetlands. The Contingency Plan should include actions which will be taken to correct any
defects and accomplish the intended purpose of the Project.
WW922DBWD/020206ms
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5.0 CONCLUSIONS AND RECOMMENDATIONS
4.1 Conclusions
Two streams were found on the property. These included a Type 3 Stream near the
northern property line and a Type 4 Stream near the southeast property corner. Both
streams were found to be flanked by Category III wetlands. Those wetlands have been
staked in the field and are shown on Figure 3. The proposed driveway and a portion of
the residence lie within the wetland ubufferzoneas per Jefferson County regulations
(Jefferson County 2001). A compensatory Mitigation Plan has been developed to offset
impacts of that development within the buffer zone. Implementation of that Mitigation
Plan is expected to result in a zero or net positive impact of the project on the streams
and wetlands on the Site.
4.2 Recommendations
Figure 3 shows mapped locations of regulatory wetlands, streams and associated buffer
zones found on the Site. The project is likely exempted from the 150 foot buffer zone from
the shoreline of Tarboo Bay due to the presence of Dabob Post Office Road and other
existing developments (Greg Ballard 2005, personal communication). Recommended 100
foot buffer zones for the two streams and 50 foot buffer zones around these wetlands
have also been shown on Figure 3. No structures, grading, excavating, filling, draining or
other activities which may adversely affect the wetlands may be carried out in the wetland
or in the buffer zones as per Section 3.6.9 of the Unified Development Code, except as
provided by granting of a Variance by the County. Westech Company recommends that
the County grant such a Variance based on the Mitigation Plan developed and included
within this report.
WW922DBWD/020206ms
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6.0 REFERENCES
Cooke, S.S. 1997. A Field Guide to the Common Wetland Plants of Western
Washinaton and Northwestern Oreaon. Seattle Audubon Society. Seattle,
Washington.
Guard, J. 1995. Wetland Plants of Washington and Oreaon. Lone Pine Publishing.
Renton, Washington.
Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of
Washington Press. Seattle, Washington.
Jefferson County. 2001. Jefferson County Unified Development Code. Section 3, Land
Use Districts, Subsection 3.6 - Wetlands. Department of Community
Development. Port Townsend, Washington.
JSF Engineering. 2005. Unpublished maps and data furnished to Westech Company by
Mr. John Fleming, JSF Engineering. Port Angeles, Washington.
Lyons, C.P. 1997. Wildflowers of Washinaton. Lone Pine Publishing. Renton,
Washington.
Munsell Color. 1994. Munsell Soil Color Charts. GretagMacbeth. New Windsor, New
York.
Pojar, J. and A. MacKinnon. 1994. Plants of the Pacific Northwest Coast. Lone Pine
Publishing Company. Redmond, Washington.
Taylor, R. 1995. Northwest Weeds. Mountain Press Publishing Company. Missoula
Montana.
U.S. Army Corps of Engineers (ACOE). 1989.
Delineatina Jurisdictional Wetlands.
Washington, D.C.
Federal Manual for Identifvina and
U.S. Government Printing Office.
U.S. Fish and Wildlife Service (USFWS). 1988. National List of Species that Occur in
Wetlands: Reaion 9 (and Supplement). Biological Report 88(26.9). Portland,
Oregon.
U.S. Geological Survey. 1953. Quadrangle Map of Quilcene, Washington. 1 :24,000
Scale. Published 1953, not photorevised. Boulder, Colorado.
U.S. Soil Conservation Service (SCS). 1975. Soil Survey of Jefferson County Area.
Washinaton. U.S. Department of Agriculture. Washington, D.C.
WW922DBWD/020206ms
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Washington Department of Ecology (WDOE). 1993. Washinaton State Wetlands Ratina
System: Western Washinaton. Second Edition. Publication # 93-74. Olympia,
Washington.
Washington Department of Ecology (WDOE). 1997. Washinaton State Wetlands
Identification and Delineation Manual. Publication #96-94. Olympia, Washington.
WW922DBWDI020206ms
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TABLE 1. UPLAND AND WETLAND VEGETATION
Common Name Scientific Name Indicator *
Wetland plants
Western red cedar Thuja plicata FAC
Red alder Alnus rubra FAC
Soft rush Juncus effusus FACW
Tufted hairgrass Deschampsia cespitosa FACW
Red fescue Festuca rubra FAC
Foxtail (short-awn) Alopecurus aequalis OBL
Horsetail Equisetum arvense FAC
Reed canary grass Phalaris arundinacea FACW
Salmonberry Rubus spectabilis FAC
Nootka rose Rosa nutkana FAC
Lyngby sedge Carex Iyngbyei OBL
Perennial ryegrass Lolium perenne FACU
Upland plants
Douglas Fir Pseudotsuga menziesii FACU
Western Hemlock Tsuga heterophylla FACU
Big-leaf maple Acer macrophyllum FACU
Red elderberry Sambucus racemosa FACU
Oceanspray Holodiscus discolor UPL
Teasel Dispacus sylvestris NI
White clover Trifolium repens FACU
Canada thistle Cirsium arvense FACU
Nettle Urtica dioica FACU
Blackberry Rubus ursinus FACU
Himalayan blackberry Rubus discolor FACU
Sword fern Polystichum munitum FACU
Bracken fern Pteridium aquilinum FACU
Salal Gaultheria shallon FACU
*Indicators: UPL = Upland plant, FACU= Facultative Upland Plant (more upland than
wetland), FAC = Facultative (borderline wetland plant), FACW = Facultative
Wetland Plant (prefers wetland conditions), OBL = Obligate (only found in
wetlands), NI= non indicator.
WW922DBWD/020206ms
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TABLE 2. SITE SOILS
Wetland Tvpe Color Value/Chroma
Southeastern silt loam over glacial till dark grey-brown 3/1 (10YR)
This soil isa very gravelly
silt-loam over glacial till at
10-12 inches. Value varies
between 3/1 and 2/1 with gley.
Northwestern sandy-silt loam over glacial till dark brown 3/2 (10YR)
This soil is a very shallow, highly
Organic dark-brown soil over glacial
till at 3-6 inches depth. Some mottles
were observed.
Upland forest These soils were lighter brown brown-tan 3/3 (1 OYR)
sandy-silt loams. These soils were
deep and well drained.
*Value/Chroma readings are from comparison of field samples with Munsell Soil Color
Charts
WW922DBWDJ020206ms
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I TABLE 3. LIST OF NATIVE PLANTS FOR BUFFER ZONE,
STREAM AND WETLAND RESTORATION AND ENHANCEMENT
I Location Species Number Scientific Name Size
I Area 1 Western red cedar 6 Thuja plicata 2 gallon
Douglas fir 4 Pseudotsuga menziesii 2 gallon
I
Salmonberry 5 Rubus spectabilis 1 gallon
I Salal 5 Gaultheria shallon 1 gallon
I Pacific ninebark 6 Physocarpus capitatus 1 gallon
Area 2 Western red cedar 6 Thuja plicata 2 gallon
I Big-leaf maple 5 Acer macrophyllum 2 gallon
I Red alder 6 Alnus rubra 2 gallon
Vine maple 6 Acer circinatum 1 gallon
I Salmonberry 8 Rubus spectabilis 1 gallon
I Area 3 Western red cedar 6 Thuja plicata 2 gallon
Red alder 6 Alnus Rubra 2 gallon
I Hawthorn 6 Crataegus douglasii 2 gallon
I Pacific ninebark 6 Physocarpus capitatus 2 gallon
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I WW922DBWD/020206ms 21
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APPENDIX A
WETLAND MAPS AND DATA FORMS
WW922DBWD,APPAl0020206mas A-1
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DATA FORM 1 Routine Wetland Determination (W A State Wetland Delineation Manual or 1987 Corps
Wetland Delineation Manual)
Project/Site: Dabob Post Office Road
pplicant/ owner: Joseph Vaughan and Jeanette Misfud
Date: 1-30-06
County: Jefferson
State: Washington
S/T/R: 4j27Nj1W
nvestigator(s): Dr. G. Bradford Shea, James McDougall and
ustin Rondeau
Do Normal Circumstances exist on the site?
s the site significantly disturbed (atypical situation)?
s the area a potential Problem Area?
GETATION
III
yes
yes
no mmunity 10: Wetland
It ransect 10:
I Plot 10: VSH 1
Dominant Plant Species
Stratum
Indicator
Dominant Plant Species
Stratum
Indicator
Reed canary grass
Pharis arundinacea
80ft rush
Juncus effuses
Himalayan blackberry
Rubus discolor
Horsetail
E uisetum arvense
utleaf blackberry
Rubus laciniatus
YDROPHYTICYEGETATION INDICATORS:
H-80%
FACW+
H-5%
FACW+
8-5%
FAC
H-5%
FACW+
8-5%
FACU+
Vo of dominants OBL FACW a. FAC: 950/0
heck all indicators that apply & explain below:
Regional knowledge of plant communities _X_
Physiological or reproductive adaptations
echnical Literature _X_
Wetland plant list (Nat'l or regional) _X_
Morphological adaptations
Wetland Plant Data Base
OTHER_
ydrophytic vegetation present? .. no
ationale for decision/Remarks: Majority of plant species were found to be FAON+.
s it the growing season?
Based on: lime of year
yes
ater Marks:
Drift Lines: es
xidized Root (live roots)
hannels < 12 in. yes
Eno
Dept. of inundation:
Depth to free water in pit:
Depth to saturated soil:
inches
inches
_6_ inches
FAC Neutral: yes
ater-stained
Leaves:
yes.
heck all that apply & explain below:
tream, Lake or gage data: _ ther:
erial hoto ra hs: Other:
etland Hydrology present? II no
Rationale for decision/Remarks: Soils and vegetation indicate a wetland.
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ap Unit Name Kitsap Series Drainage Class C
Series & Phase)
axonomy (Subgroup) KtC ( Kitsap silt loam)_ Field observations confirm II no
mapped type?
Profile Description
Matrix color Drawing of soil
Depth Horizon (Munsell Mottle colors Mottle abundance Texture, concretions, profile
(inches) moist) (Munsell moist) size & contrast structure, etc. (match description)
0-6" A Med Brown I I
3/2 10YR 0-6 " Silty
~ clay
Med Brown ~ loam
6-12" B 3/2 10YR
Med Brown 3/2 I 6-12" I
12+" C ......... Clay
lOYR 1'&
Muck
I 12-18" I Clay
........ ~ Muck
~ydric Soil Indicators: (check all that apply)
Histosol Concretions
Histic Epipedon High Organic Content in Surface Layer of Sandy Soils
Sulfidic Odor Organic Streaking in Sandy Soils
Aquic Moisture Regime Listed on Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils List
Gleved or Low-Chroma Colors Other (explain in remarks)
!Hydric soils present? E
"i"":,,,~;, no
Rationale for decision/Remarks: Saturation levels suggest hydric soils.
Wetland Determination (circle)
Hydrophytic vegetation present? no
Hydric soils present? no Is the sampling point E no
Wetland hydrology present? no within a wetland?
Rationale/Remarks: All indicators present.
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DATA FORM 1 Routine Wetland Determination (W A State Wetland Delineation Manual or 1987 Corps
Wetland Delineation Manual)
Project/Site: Dabob Post Office Road
pplicant/ owner: Joseph Vaughan and Jeanette Misfud
nvestigator(s): Dr. G Bradford Shea and Mr. James
McDou all
o Normal Circumstances exist on the site?
s the site significantly disturbed (atypical situation)?
s the area a potential Problem Area?
GET ATION
Date: 1-30-06
County: Jefferson
State:VVashington
SIT /R: 4j27Nj1 W
II
yes
yes
no ommunity 10: Upland
I..'. ransect 10:
~. Plot 10: VSH 2
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
Himalayan blackberry 8-60% F AC/F ACU
Rubus discolor
Horsetail H-20% FACW+
E uisetum arvense
oft rush H-5% FACW+
Rubus ursinus
railing blackberry H-15% FACU
(Rubus ursinus
HYDROPHYnC VEGETAnON INDICATORS:
Vo of dominants OBL FACW & FAC: 750/0
heck all indicators that apply & explain below:
Regional knowledge of plant communities _X_
hysiological or reproductive adaptations
echnical Literature _X_
Wetland plant list (Nat'1 or regional) _X_
Morphological adaptations
Wetland Plant Data Base
OTHER_
ydrophytic vegetation present? no
Rationale for decision/Remarks: Himalayan blackberry is not a good wetland indicator. Approximately 25% of plants
ere wetland lants.
s it the growing season?
ased on: Time of year.
yes
ept. of inundation:
Depth to free water in pit:
Depth to saturated soil:
inches
inches
inches
~iWl!
g
_no
ater Marks:
Drift Lines: es
xidized Root (live roots)
hannels < 12 in. yes
FAC Neutral: It~
ater-stained
Leaves:
yes
no
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ap Unit Name _Kitsap Series
Series & Phase)
axonomy (Subgroup) KtC (Kitsap Silt Loam)
Drainage Class B
Field observations confirm
mapped type?
III
no
Profile Description
Matrix color Drawing of soil
Depth Horizon (Munsell Mottle colors Mottle abundance Texture, concretions, profile
(inches) moist) (Munsell moist) size & contrast structure, etc. (match description)
0-6" A 4/2 10YR I 0-6" I Silty
Gray Brown clay
'It. loam
6-12" B 3/3 lOYR
Dark Brown
I 6-12" I Silty
12+" C 3/3 lOYR ........... Clay
Dark Brown ...... loam
Clay
112.18 " I, Silt
loam
"A with
gravel
Hydric Soil Indicators: (check all that apply)
Histosol Concretions
Histic Epipedon High Organic Content in Surface Layer of Sandy Soils
Sulfidic Odor Organic Streaking in Sandy Soils
Aquic Moisture Regime Listed on Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils List
_X_ Gleved or Low-Chroma Colors Other (explain in remarks)
Hydric soils present? yes D
Rationale for decision/Remarks: ~
Wetland Determination (circle)
Hydrophytic vegetation present? E no
Hydric soils present? yes I Is the sampling point yes
Wetland hydrology present? yes within a wetland?
Rationale/Remarks: Location does not meet soils or hydrology criteria.
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APPENDIX B
SITE PHOTOGRAPHS
WW922DBWD,APPB/020206mas B-1
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1. Looking eastward across the southern portion of the Property.
2. Area near the proposed access driveway.
VWJ922DBWD.APPB/020206mas
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"',
3. Adjacent oyster farm shell pile to the south.
4. Oabob Post Office Road (Site on right).
WW922DBWD.APPB/020206mas
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5. Forested hillside - eastern end of Property.
6. Upland fields - south-central area.
WW922DBWD.APPB/020206mas
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