HomeMy WebLinkAboutBLD2000-00790 Wetland Deliniation •
April 29, 1997
Jon Rose, P.E.
Pope Resources
19245 Tenth Avenue N.E.
P.O. Box 1780
Poulsbo, WA 98370-0239
RE: Thomdyke Site 1 - House Site
Wetland Delineation and Description
Raedeke Proj. No. 95018.4
Dear Mr. Rose:
At your request, this letter summarizes the results of our wetland reconnaissance of
Site 1 (house site) at Thorndyke Bay, Jefferson County. The property is located about
four mile southwest of South Point on the South Point-Thorndyke Road, in the NE 1/4
of the SW 1/4 of Section 25, Township 27N, Range 1W W.M. on the east side of the
Toandos Peninsula in eastern Jefferson County, Washington. The house site is on
upland south of Thorndyke Bay and its estuary and south of Thomdyke Creek. The
site is on a low bluff facing Hood Canal (Figure 1).
The objective of our investigation was to delineate and flag the wetland boundary in the
area you indicated on the Site 1 sketch, attached to your March 17, 1997 FAX to
Raedeke Associates, Inc. We examined the property and identified areas that would be
defined and classified as regulatory wetlands or streams and flagged the wetland
boundary adjacent to the proposed house site.
We visited the site on March 18, 1997 to investigate the soil, vegetation, and
hydrology of the property in order to determine the approximate locations of wetlands
and/or streams. We also collected general descriptions of vegetation, soil, and
hydrologic conditions in representative areas to document our observations.
DEFINITIONS AND ME"IHODOLOGIES
Wetlands and streams are protected by federal law as well as by state and local
regulations. Federal law (Section 404 of the Clean Water Act) generally prohibits the
discharge of dredged or fill material into the nation's waters, including wetlands,
without a permit from the U.S. Army Corps of Engineers (COE 1997). State and
County regulations provide for upland buffers adjacent to wetlands and streams.
We based our investigation upon the guidelines of the COE Wetlands Delineation
Manual (Environmental Laboratory 1987) in our assessment, as required by the COE
RAEDEKE ASSOCIATES, INC.
5711 Northeast 63rd St. Seattle, WA 98115 (206) 525-8122
Mr. Jon Rose
April 29, 1997
Page 2
(1991a, 1991b, 1992, and 1994) and now by state law for all local jurisdictions,
including Jefferson County. Generally, as outlined in the 1987 wetland delineation
manual, wetlands are distinguished by three diagnostic characteristics: hydrophytic
vegetation (wetland plants), hydric soil (wetland soil), and wetland hydrology.
The COE wetland definition was used to determine if any portions of the study area
would be classified as wetland. A wetland is defined as an area "inundated or saturated
by surface or groundwater at a frequency and duration sufficient to support, and that
under normal circumstances does support, a prevalence of vegetation typically adapted
for life in saturated soil conditions" (Federal Register 1986:41251).
Jefferson County's Interim Critical Areas Ordinance (CAO), May 9, 1994, adopted the
Washington State Wetlands Rating System, Western Washington, 1991, for the
classification of wetlands (Washington Department of Ecology [DOE] 1991). (The
Wetland Rating System was revised and a second edition published in August 1993.)
Wetland buffers are based upon wetland class and the intensity of land use.
BACKGROUND RESEARCH AND FIELD SA FLING PROCEDURES
We reviewed aerial photographs and collected available background information,
including U.S.D.A. Soil Conservation Service Soil (SCS) Survey maps, U.S. Fish and
Wildlife Service (USFWS) National Wetland Inventory (NWI) and local wetland
inventory maps for the property.
•
The USFWS NWI map for the site (USFWS 1987) shows an estuarine wetland complex
at the head of Thorndyke Bay. Much of the estuary is indicated as intertidal
unconsolidated shore, regularly flooded (E2USN) and intertidal unconsolidated aquatic
bed/unconsolidated shore, regularly flooded (E2AB/US N) on the map. On the
shoreline north of the house site the map indicates intertidal emergent, regularly
flooded estuarine wetland (E2EMN). West of the house site, a small tributary creek
joins Thorndyke Creek. Approximately 700 feet south of the house site a short
segment of the tributary creek is indicated as upper riverine, perennial open water,
regularly flooded (R3OWN). Wetlands depicted on the USFWS NWI maps are general
in terms of location and extent, as they are determined primarily from aerial
photographs and without ground truthing. Thus, the number and areal extent of
existing wetlands located on the property may differ from those marked on an NWI
map.
The Washington Department of Natural Resources, Forest Practices Base Maps (DNR
1997) were acquired for Sections 24 and 25 (Figures 2 and 3). The map for Section 24
indicates a Type 4 waters (tributary) on the south side of the Thorndyke estuary, west
of the project site. This tributary is not the same tributary indicated on the NWI map,
the soils map, or our site map (Figure 1).
Mr. Jon Rose
April29, 1997
Page 3
The Jefferson County Fish and Wildlife Habitat Areas Map (draft November 4, 1992)
shows the shoreline of the Toandos Peninsula and Thorndyke Bay as Conservation
Area.
The Shoreline Management Master Program (Jefferson County March 7, 1989),
Shoreline Jurisdiction Map indicates that the shoreline of the Toandos Peninsula,
including Thorndyke Bay, is classified as Conservancy.
The Jefferson County Significant Naturals Areas (Volume 1 - East Jefferson), prepared
by Admiralty Audubon Society, 1990, identifies Thorndyke Marsh as encompassing 33
acres including stands of cordgrass (Spartina foliosa). They cite its value for
waterfowl, as well as commercial fisheries on the Bay.
The SCS (McCready 1975) described 5 soil mapping units in the vicinity of Site 1.
These are: Coastal beach, Tidal marsh, Indianola loamy sand, Belfast silt loam (wet
variant), and Kitsap gravely loam. None of these mapping units are classified as hydric
by the SCS (1991, Federal Register 1994). Coastal beach and Tidal marsh units are
not true soil series, as no soil formation has taken place. They are both, however,
subject to tidal influence and can often be extremely wet. Indianola loamy sand is
somewhat excessively drained, has rapid permeability, and formed on glacial outwash
plains. Although the Belfast silt loam is not listed as hydric, the wet variant is found
on flood plains, and is poorly drained with moderately slow permeability. Kitsap
gravely loam is moderately well drained and was formed in glacial lacustrine or marine
sediments. The Kitsap series has very slow permeability (McCready, 1975). Although
these soil series are classified as non-hydric, there may be inclusions of hydric soil
(indicative of possible wetlands) within a given mapping unit.
Vegetation, soils, and hydrology were examined in representative areas of the property.
Plant communities were inventoried, classified, and described primarily by field
inspection and by examining photos or existing mappings. We used the Braun-
Blanquet cover-abundance method (Mueller-Dombois and Ellenberg 1974) as a way to
objectively describe homogenous vegetation "cover types." General vegetation patterns
were noted; scientific nomenclature of plant species generally follows Hitchcock and
Cronquist (1976), updated by Polar and MacKinnon (1994), and Hickman (1993).
The USFWS Wetland Indicator Status (WIS) ratings were used to determine whether
hydrophytic vegetation was present (Reed 1988, 1993). The WIS ratings define plant
species based on their ability to withstand saturated soil conditions. Plants are rated,
from highest to lowest probability of occurrence in wetlands, as obligate (OBL),
facultative wetland (FACW), facultative (FAC), facultative upland (FACU), and upland
(UPL), respectively. Plant species not listed on the rating list are assumed to be upland
by default (Reed 1988); indicated here as "UPL*." Under the 1987 federal
methodology, more than 50% of the predominant plant species in an area must be rated
facultative or wetter to be considered hydrophytic.
We sampled soils at locations that corresponded with vegetation sampling areas and
potential wetland areas. Numerous auger holes were drilled to investigate soil textures
Mr. Jon Rose
April 29, 1997
Page 4
and general moisture and water table conditions. A series of five hand dug soil pits
were subjectively located in representative areas of the site in order to describe soil
profiles in more detail to at least 18 inches. Colors of the soils were determined using
a Munsell Color Chart (Kollmorgen Corporation 1975).
GENERAL PROPERTY DESCRIPTION •
Site 1 is located about four mile southwest of South Point on the South Point-
Thorndyke Road, in the NE 11/4 of the SW 1/4 of Section 25, Township 27N, Range 1
W W.M. on the east side of the Toandos Peninsula in eastern Jefferson County,
Washington. The site is accessed by a gravel road departing from the east side of the
county road and heading northeast toward the mouth of Thorndyke Bay at Hood Canal
(Figures 1, 2, and 3).
A review of aerial photographs you provided us, shows most Pope Resources' Property
at Thorndyke Bay is forested. To the north of Site 1, the Thomdyke Bay estuary has a
plant cover of grasses and forbs. Site 1 is a small grassy opening on the south side of
Thorndyke Bay surrounded by trees on the south, west, and northwest sides. Old fruit
trees and locust trees indicate that Site 1 has been the location of a homestead for many
years.
EXISTING CONDITIONS
As you directed, our investigations delineated only the margin of the estuary and
forested wetlands along the tributary stream nearest to Site 1. The following sections
provide further discussion of the vegetation, soil, and hydrologic conditions of the
property, based on our field investigations.
The majority of the property is mixed coniferous/deciduous forest composed of black
cottonwood (Populus balsamifera ssp..trichocarpa, FAC), and red alder (Alnus rubra,
FAC) with a lesser amount of big-leaf maple (Acer macrophyllum, FACU), western red
cedar (Thuja plicata, FAC), western hemlock (Tsuga heterophylla, FACU-), Douglas
fir (Pseudotsuga menziesii, FACU), grand fir (Abies grandis, FACU-), and Sitka
spruce (Picea sitchensis, FAC). Some of the Douglas fir, Sitka spruce, western red
cedar, and western hemlock to the south and west of Site 1 were large trees, some of
which approached 3 feet in diameter at breast height (dbh). The alders ranged from 12
to 24 inches dbh and were mature for alder. In the deciduous portions of the mixed
forest the understory consisted of a well-developed tall shrub layer dominated by
salmonberry (Rubus spectabilis, FAC), vine maple (Acer circinatum, FAC-), Indian
plum (Oemlaria cerasiformis, FACU), and red elderberry (Sambucus racemosa, ssp.
pubens, FACU). In the more coniferous portions of the mixed forest, the understory
consisted of red huckleberry (Vaccinium parvifolium, UPL), salal (Gaultheria shallon,
FACU), Cascade Oregongrape (Mahonia nervosa, UPL*) and sword-fern (Polystichum
munitum, FACU). The forest extends to the bluff above Hood Canal and to within a
few feet of the trailer home on Site 1.
Mr. Jon Rose
April 29, 1997
Page 5
Site 1 (the house site) is currently occupied by a house trailer and several outbuildings
in an open grassy sward north and east of the forest and overlooking Thomdyke
estuary and Hood Canal. This terrace area is approximately 15 to 20 feet above the
beach adjacent to the trailer and slopes gently to the north. At the north end of the
sward, the terrace is only about 7 feet above the estuary. Adjacent to the house trailer,
along the top of the beach bluff and on its slope to the beach is a narrow strip
composed of Nootka rose (Rosa nutkana, FAC), oceanspray (Holodiscus discolor,
UPL*), Himalayan blackberry (Rubus discolor, FACU), and red alder.
The soils of the bluff to the south and east of the mobile home were the first sampled
during our March 18, 1997 field visit. Pit 1 (in forest, directly south of mobile home)
consisted of 1 inch of forest litter overlying 4 inches of dark brown (10YR 3/3) silt
loam, overlying dark yellowish brown (10YR 4/4) sandy loam to a depth of 18 inches
or more.
Pit 2 (behind mobile home at edge of bluff) consisted of 5 inches of very dark grayish
brown (10YR 3/2) sandy loam overlying a 2 inches horizon of crushed oyster shells
with some mineral soil material. Below these horizons, strong brown (7.5YR 5/6)
loamy sand was present to a depth of 18 inches or more. Both of these soils were dry
throughout the profiles during our field investigation, with no evidence of ponding or
seasonally high water tables. These areas lacked both hydric soil morphology and
positive evidence of wetland hydrology. Based on our observations, these areas would
not be considered wetland according to the federal delineation methodologies.
At the north end of the terrace is a continuation of the narrow strip of shrubby
vegetation separating the grassy terrace for the Thorndyke estuary. Vegetation is this
strip included Nootka rose, hawthorn (Crataegus spp., FAC), Indian plum, Cascade
Oregongrape, shining Oregongrape (Mahonia aquifolium, UPL*), red huckleberry,
trailing blackberry, Himalayan blackberry. stinging nettles (Urtica dioica, FAC+),
and bracken fern (Pteridium aquilinum, FACU).
The estuarine vegetation just to the north of the shrubby strip consisted of two
components. A stand of dunegrass (Elymus mollis, UPL*) is found behind the
beachridge and the stand of driftwood. Further from the beachridge and closer to the
mouth of a small tributary stream is an area of mixed grasses, sedges, and forbs. It
was not possible to identify the remains of the over-wintering grasses in this area, but
they appear to include sedges (slough sedge, Carex obnupta, OBL, and/or Lyngby's
sedge, Carex lyngbyei, OBL), creeping spike-rush (Eleocharis palustris, FACW-OBL)
and pickleweed (Salicornia spp.).
The beach and estuary deposits north-east of the mobile home appeared to be somewhat
consistent with the Coastal beach and Tidal marsh units mapped for the site (McCready
1975): Pit 3 (just above beach in area of beach rye) was comprised of 2 inches of
black (10YR 2/1) sandy loam overlying multi-colored very gravely coarse sand to a
depth of 25 inches or more. No soil saturation or water table was found in Pit 3, but
the area is likely inundated by spring tides and storms.
Mr. Jon Rose
April 29, 1997
Page 6
Pit 4 (in tidal marsh area with Carer sp. and creeping spike-rush) contained 5 inches of
black (10YR 2/1) silt loam over 3 inches of very dark grayish brown (10YR 3/2) silt
loam/silty clay loam. Below these horizons, sand was present as in Pit 3. Water was
ponded 2 inches at Pit 4 during our March 18, 1997 field visit.
•
West of Site 1 between the grassy terrace and the small tributary stream is a band of
mixed forested wetland. Dominant trees in this area include red alder, grand fir, Sitka
spruce, and western red cedar. Occasional western hemlock and Douglas fir are also
present. Salmonberry and Indian plum is found under the alders. Several depressions
contained slough sedge. Under the spruce/cedar portions of the stand, the understory
consists of sword-fern and one small depression containing skunk-cabbage (Lysichiton
americanum, OBL).
Pit 5 was located in the forested portion of the wetland. This profile consisted of 4
inches of black (10YR 2/1) silt loam/silty clay loam over a 2 inches horizon of wood
and charcoal pieces, overlying 6 inches of very dark gray (10YR 3/1) silt loam. Below
these horizons was found 3 inches of grayish brown (10YR 5/2) sandy loam with
common strong brown (7.5YR 4/6) mottles overlying multi-colored very gravely
coarse sand to a depth of 20 inches or more. The soil in Pit 5 was fully saturated and
ponded 2 inches during our March 18, 1997 field visit.
We provided you a sketch map of the boundary we flagged on March 18, 1997. Using
the sketch map, WestSound Consultants, Inc., surveyed the wetland boundary (Figure
4). Figure 4 shows the location of the mobile home and other structures currently on
site, the wetland boundary, the small tributary stream, and the access road.
SUNDIARY DETERMINATION AND CLASSIFICATION
Based on our field investigation, wetlands in the study area included the estuarine
wetland to the north of the Site 1 (the southern margin of Thomdyke Bay estuary), and
the palustrine forested wetland between Site 1 and the small tributary stream to the
west. Both areas have hydrophytic vegetation, hydric soil, and apparent wetland
hydrology. The estuarine wetland would be classified (based on Cowardin et al. 1992)
as estuarine intertidal, persistent emergent, regularly flooded wetland (E2EM1N). The
palustrine wetland would be classified as palustrine mixed forest (PFO1/4).
The Jefferson County's Interim Critical Areas Ordinance (1994, Parag. 6.3) states that
wetland classification/designation shall be determined using the Washington State
Department of Ecology's Wetland Rating System for Western Washington, October
1991. We used the current 1993 edition of the system, which does not differ
significantly from the 1991 edition with respect to the determination of Wetland Class
for estuarine wetlands.
Mr. Jon Rose
April 29, 1997
Page 7
Estuarine Wetland
Because the estuarine wetland exceeded 5 acres, it met the criteria for a Category I
wetland according to the Washington Department of Ecology (1993) Classification
System, which is equivalent to a "Class 1" wetland in Jefferson County (1994).
Palustrine Wetland
The palustrine (streamside) wetland is contiguous with the estuarine system, thus it
would be given the same classification as the Class I estuarine wetland.
Tributary Stream
The Forest Practices Board Emergency Rule redefined Type 2 and 3 waters in
December 1996 (Washington Forest Practices Board 1996). Under the revised Rule,
Type 3 waters are defined as being used by a significant number of anadromous or
resident game fish for spawning, rearing or migration and waters having the following
characteristics are presumed to have significant anadromous or resident fish use.
Given the size of its channel, its gentle gradient, and its likely use by anadromous fish,
it is reasonable to assume that the tributary stream west of Site 1 meets the criteria for
a Type 3 stream under the revised rules (Washington Forest Practices Board 1996).
The remainder of the study area failed to meet the definition of wetland, based
primarily on the lack of hydric soil and the lack of wetland hydrologic conditions. We
caution that our determinations should be considered preliminary, and Jefferson County
has the final authority to determine wetland and stream ratings and required buffers, as
well as those for other sensitive areas within their jurisdiction. We delineated only the
wetland boundary adjacent to Site 1. Jefferson County staff should review the results
of our delineation and supporting documentation. The County would then determine
the specific conditions of approval of any proposed future activities in the context of a
specific development proposal. As noted above, the COE also regulates wetlands and
streams as waters of the U.S. under Section 404 of the Clean Water Act.
BUFFERS AND SETBACKS
The buffers and setbacks that would apply to the site depend upon the classification of
the wetlands, the intensity of proposed land use, and the height of the shoreline bluff.
Intensity of Proposed Land Use
The County's Critical Areas Ordinance (1994, Parag. 2.4 Definitions) defines intensity
of land use as follows:
High Intensity Land Uses: "single family residences on a legally created
building lot or less than one acre in size (including right-of-ways and utility
easements)."
Mr. Jon Rose
April 29, 1997
Page 8
Low Intensity Land Uses: "single family residences on a legally created
building lot with a minimum lot size of one acre or greater in size."
Since the Thorndyke lot is greater than one acre, land use would be low intensity.
Buffer Widths
The County ordinance defines wetland buffers depending upon Wetland Class and
intensity of land use. The buffer width for the site would be (Jefferson County, 1994,
Parag 6.505):
Wetland Class High Intensity Land Use Low Intensity Land Use
Class I 150 feet 75 feet
Assuming a Class I rating and low intensity proposed land use, the wetland buffer for
the Thomdyke Bay house site would be 75 feet.
Streamside Buffer
The County's ordinance provides for streamside buffers (1994, Parag. 10.507) as
follows:
Stream Type/Average Width High Intensity Land Use Low Intensity Land Use
Type 3 50 feet 25 feet
The streamside buffer for the tributary creek would be 25 feet, less than the buffer
required for the palustrine wetland. The more restrictive wetland buffer (75 feet)
would thus take precedence.
Shoreline Management Program, Shoreline Setback
The Jefferson County Shoreline Management Master Program (March 7, 1989)
specifies setbacks from the shoreline for residential development (Parag. 5.160) as
follows:
(10) "The standard set back for residential structures, including common
appurtenant structures such as garages and workshops, shall be 30 feet or 1 foot
for each foot of bank height, which ever is greater. This setback shall be
measured from the bank's edge when the bank's height exceeds 10 feet. ..."
•
The height of the bank adjacent to the house site is less than 30 feet, thus the setback
would be 30 feet.
Mr. Jon Rose
April 29, 1997
Page 9
LIMITATIONS
We have prepared this report for the exclusive use Pope Resources and their
consultants. No other person or agency may rely upon the information, analysis, or
conclusions contained herein without permission from them.
The determination of ecological system classifications, functions, values, and
boundaries is an inexact science, and different individuals and agencies may reach
different conclusions. With regard to wetlands, the final determination of their
boundaries for regulatory purposes is the responsibility of the various resource agencies
that regulate development activities in wetlands. We cannot guarantee the outcome of
such agency determinations. Therefore, the conclusions of this report should be
reviewed by the appropriate regulatory agencies prior to any detailed site planning or
construction activities.
We warrant that the work performed conforms to standards generally accepted in our
field, and was prepared substantially in accordance with then-current technical
guidelines and criteria. The conclusions of this report represent the results of our
analysis of the information provided by the project proponents and their consultants,
together with information gathered in the course of this study. No other warranty,
expressed or implied, is made.
Thank you for this opportunity to work with you. We hope this information is useful.
If you have any questions, we are available at (206) 525-8122.
Respectfully submitted,
RAEDEKE ASSOCIATES, INC.
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Richard S. Fleming, Ph.D. \I
Certified Senior Ecologist, ESA
Mr. Jon Rose
April29, 1997
Page 10
LITERATURE CITED
Cowardin, L., F. Golet, V. Carter, and E. LaRoe. 1979. Classification of wetlands
and deepwater habitats of the United States. U.S.D.I. Fish and Wildlife Service
Publ. FWS/OBS-79/31.
103 pp.
Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual.
Technical Report Y-87-1, US Army Engineers Waterways Experiment Station,
Vicksburg, Mississippi. 100 pp.
Federal Interagency Committee for Wetland Delineation. 1989. Federal manual for
identifying and delineating jurisdictional wetlands. U.S. Army Corps of
Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife
Service, and U.S.D.A. Soil Conservation Service, Washington, D.C.
Cooperative technical publication. 76 pp.
Federal Register. 1986. 40 CFR Parts 320 through 330: Regulatory programs of the
Corps of Engineers; final rule. Volume 51, No. 219, pp. 41206-41260, U.S.
Government Printing Office, Washington, D.C.
Federal Register. 1994. U.S. Department of Agriculture, Soil Conservation Service:
Changes in Hydric Soils of the United States. Volume 59, No 133, July 13,
1994.
Hickman, J.C. 1993. The Jepson manual: higher plants of California. Univ. of Cal.
Press, 1400 pp.
Hitchcock, C., and A. Cronquist. 1976. Flora of the Pacific Northwest. Univ. of
Washington Press, Seattle, Washington. 730 pp.
Jefferson County, 1989. Shoreline Management Master Program for Jefferson County
and Port Townsend, Washington. Adopted March 7, 1989.
Jefferson County, 1994. Interim Critical Area Ordinance (Ordinance No. 05-0509-94)
May 9, 1994.
Kollmorgen Corporation. 1975. Munsell soil color charts. Macbeth, a Division of
Kollmorgen Corporation, Baltimore, MD.
McCready, F.R. 1975. Soil Survey of Jefferson County area, Washington. U.S.D.A.
Soil conservation Service. 100 pp.
Mueller-Dombois, D. and H. Ellenberg. 1974. Aims and methods of vegetation
ecology. John Wiley and Sons, New York. 547 pp.
Pojar, J., and A MacKinnon. Plants of the Pacific Northwest Coast, Washington,
Oregon, British Columbia, and Alaska. B.C. Ministry of Forests, B.C. Forest
Service, Lone Pine Publishers, Redmond, Washington.
Mr. Jon Rose
April 29, 1997
Page 11
Reed, P.B., Jr. 1988. National list of plant species that occur in wetlands: Northwest
(Region 9). U.S.D.I. Fish and Wildlife Service. Biological Report 88 (26.9).
89 pp.
Reed, P.B., Jr. 1993. 1993 Supplement to list of plant species that occur in wetlands:
Northwest (Region 9). U.S.D.I. Fish and Wildlife Service. Supplement to
Biological Report 88 (26.9) May 1988.
U.S. Army Corps of Engineers. 1991a. Special notice. Subject: Use of the 1987
wetland delineation manual. U.S. Army Corps of Engineers, Seattle District.
August 30, 1991.
U.S. Army Corps of Engineers. 1991b. Memorandum. Subject: Questions and
answers on the 1987 manual. U.S. Army Corps of Engineers, Washington
D.C. October 7, 1991. 7 pp. including cover letter by John P. Studt, Chief,
Regulatory Branch.
•
U.S. Army Corps of Engineers. 1992. Memorandum. Subject: Clarification and
interpretation of the 1987 methodology. U.S. Army Corps of Engineers,
Washington D.C., March 26, 1992. 4 pp. Arthur E. Williams, Major General,
U.S.A. Directorate of Civil Works.
U.S. Army Corps of Engineers. 1994. Public Notice. Subject: Washington regional
guidance on the 1987 wetland delineation manual. May 23, 1994, Seattle
District. 8 pp.
U.S. Army Corps of Engineers. 1997. Final regional conditions, 401 water quality
certification conditions, Coastal Zone management consistency responses, for
Nationwide permits for the Seattle District Corps of Engineers for the state of
Washington. March 5, 1997. Special Public Notice. Seattle District. 72 pp.
U.S.D.A. Soil Conservation Service. 1991. Hydric soils of the United States: In
cooperation with the National Technical Committee for Hydric Soils. U.S.D.A.
Miscellaneous Publication Number 1491.
U.S. Fish and Wildlife Service National Wetlands Inventory. 1987. Lowfall, 7.5
minute quadrangle.
Washington Department of Ecology, 1991. Washington Wetland Rating System,
Westside.
Washington Department of Ecology, 1993. Washington Wetland Rating System,
Westside. Second Edition.
Washington Department of Natural Resources. 1980. Water Type Reference Map for
Township 27 N., Range 1 W., W.M.
Washington Department of Natural Resources. 1996. Washington Department of
Natural Resources, Forest Practices Base Map. July 8. 1996. Sections 24, 25,
Township 27N, Range 1W, W.M.
Mr. Jon Rose
April 29, 1997
Page 12
Washington Department of Natural Resources. 1997. Washington Department of
Natural Resources, Forest Practices Base Map. April 18, 1997. Sections 24,
25, Township 27N, Range 1W, W.M.
Washington State Forest Practices Board, 1995. Washington forest practices. Title
222 WAC, Forest Practices Board Manual; Chapter 76.09 RCW, Forest
Practices. Department of Natural Resources, Forest Practices Division.
Washington State Forest Practices Board, 1996. Water type emergency rule. Title
WAC, Forest Practices Board Manual; WAC 222-16-090, Water typing
system, Type 2 and Type 3 waters. Effective November 18, 1996.
Department of Natural Resources, Forest Practices Division.
RSF\aprojecA95018\95018-4.doc, April 15, 1997
FIGURES AND TABLES
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PALUSTRINE WETLAND
Figure 1. Site 1- Thorndike Bay, Toandos Peninsula, Jefferson County, WA.
Pope Resources Proposed House Site. Raedeke Project Number
95018.4 (From: RSF sketch map, April 14, 1997).
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18
Table 1. List of aerial photographs_used in the study.
Agency Date Type* Scale
Pope Resources Undated Color 1"= 1,000'
USDA SCS 1975 B&W 1" = 1,000'
* B&W = black and white photograph; CIR - color infra-red photograph
19
Table 2. Key to the Braun-Blanquet cover-abundance scale (Mueller-Dumbois and
Ellenberg 1974).
Key to Braun-Blanquet Cover-Abundance Scale
5 Any number, with cover more than 3/4 of the
reference area (>75 percent)
4 Any number, with 1/2 to 3/4 cover (50 - 75 percent)
3 Any number, with 1/4 to 1/2 cover (25 - 50 percent)
2 Any number, with 1/20 to 1/4 cover (5 - 25 percent)
1 Numerous, but less than 1/20 cover, or scattered,
with cover up to 1/20 (5 percent)
+ Few, with small cover (<5 percent)
r Solitary, with small cover (<5 percent)
20
Table 3. Summary of vegetation cover by species for each plot.
Cover value ratings for Plots: 1 2 3 4 5 6 7
Cover Type: FC FD SS E2 E2 PFO1 PFO4
Scientific Name •
TREES
Abies grandis 2
Acer macrophyllum
Alnus rubra 3 1
Crataegus spp. 1
Picea sitchensis 2
Populus balsamifera
Pseudotsuga menziesii 1 + •
Thuja plicata 3 3
Tsuga heterophylla
SHRUBS
Acer circinatum 2
Gaultheria shallon +
Holodiscus discolor 1 2 1
Lonicera spp. + +
Mahonia aquifolium 1
Mahonia nervosa 3 1
Oemleria cerasiformis 2 1 2
Ribes lacustre +
Rosa nutkana 4 2 +
Rubus discolor 3 2
Rubus laciniatus 1 1
Rubus spectabilis 4 4
Sambucus racemosa + 2
Vaccinium parvifolium 1
HERBS
Athyrium filix femina + +
Carex spp. 3
Elymus mollis 5 +
Dicentra formosa 2 2
Eleocharis spp. 3
Lysichiton americanum 1
Maianthemum dilatatum +
Mitella pentandra 2 2
Polystichum munitum 2 1 +
Pteridium aquilinum 1
Salicornia spp. +
Tanacetum bipinnatum 1
Urtica dioica 1
APPENDIX A:
Scientific and Common Names of Plants and Animals
•
Table A.1 Scientific and common names of plants observed on the property during the
May 1996 survey. Scientific names are from Hitchcock and Cronquist (1976),
Polar and MacKinnon (1994) and Hickman (1993).
Scientific Name Common Name
TREES:
Abies grandis Grand fir
Acer macrophyllum Big-leaf maple
Alnus rubra Red alder
Crataegus spp. Hawthorn
Populus balsamifera Black cottonwood
Pseudotsuga menziesii Douglas fir
Picea sitchensis Sitka spruce
Thuja plicata Western red cedar
Tsuga heterophylla Western hemlock
SHRUBS:
Acer circinatum (s) Vine maple
Gaultheria shallon Salal
Lonicera spp. Honeysuckle
Mahonia aquifolium Shiny Oregongrape
Mahonia nervosa Cascade Oregongrape
Oemleria cerasiformis Indian plum
Rosa nutkana Nooka rose
Rubus discolor Himalayan blackberry
Rubus laciniatus Trailing blackberry
Rubus spectabilis Salmonberry
Sambucus racemosa ssp. pubens Red elderberry
Vaccinium parvifolium Red huckleberry
HERBS:
Athyrium felix femina Lady fern
Carex lyngbyei Lyngby's sedge
Carex obnupta Slough sedge
Dicentra formosa Bleeding heart
Eleocharis spp. Spike-rush
Elymus mollis Dunegrass
Lysichiton americanum Skunk-cabbage
Maianthemun dilatatum False lily-of-the-valley
Mitella pentandra Five-stamened mitrewort
Polystichum munitum Sword-fern
Pteridium aquilinum Bracken-fern
Saliconia spp. Pickleweed
Tanacetum bipinnatum Beach tansy
Urtical dioica Stinging nettles
APPENDIX A:
Scientific and Common Names of Plants and Animals
•
r .
Table A.1 Scientific and common names of plants observed on the property during the
May 1996 survey. Scientific names are from Hitchcock and Cronquist (1976),
Pojar and MacKinnon (1994) and Hickman (1993).
Scientific Name Common Name
TREES:
Abies grandis Grand fir
Acer macrophyllum Big-leaf maple
Alnus rubra Red alder
Crataegus spp. Hawthorn
Populus balsamifera Black cottonwood
Pseudotsuga menziesii Douglas fir
Picea sitchensis Sitka spruce
Thuja plicata Western red cedar
Tsuga heterophylla Western hemlock
SHRUBS:
Acer circinatum (s) Vine maple
Gaultheria shallon Salal
Lonicera spp. Honeysuckle
Mahonia aquifolium Shiny Oregongrape
Mahonia nervosa Cascade Oregongrape
Oemleria cerasiformis Indian plum
Rosa nutkana Nooka rose
Rubus discolor Himalayan blackberry
Rubus laciniatus Trailing blackberry
Rubus spectabilis Salmonberry
Sambucus racemosa ssp.pubens Red elderberry
Vaccinium parvifolium Red huckleberry
HERBS:
Athyrium felix femina Lady fern
Carex lyngbyei Lyngby's sedge
Carex obnupta Slough sedge
Dicentra formosa Bleeding heart
Eleocharis spp. Spike-rush
Elymus mollis Dunegrass
Lysichiton americanum Skunk-cabbage
Maianthemun dilatatum False lily-of-the-valley
Mitella pentandra Five-stamened mitrewort
Polystichum munitum Sword-fern
Pteridium aquilinum Bracken-fern
Saliconia spp. Pickleweed
Tanacetum bipinnatum Beach tansy
Urtical dioica Stinging nettles