HomeMy WebLinkAboutSpecial Report (015) iltermood
Associates, Inc.
October 28, 2002
George Chechopoulas
PO Box 193
Hereford, AZ 85615
JEFFERSON COUNTY
DEPT· OF COMMUNITY DEVELOPMENT
Re:
Wetland Delineation for a 1.04'acre parcel (Parcel # 97770.0045) on Marrowstone
Island, Jefferson County, Washington. This lot is located in the NW ¼ of the NW ¼
of Section 9, Township 29 N, Range 1 E. WM.
Dear George:
This delineation was conducted on September 9, 2002 using the Washington State Wetlands
Identification and Delineation Manual developed by the Department of Ecology, in
accordance with the Jefferson County Unified Development Code. The manual uses the
three-wetland parameter methodology when determining the presence of absence of wetlands
and all three parameters of hydric soil, wetland hydrology, and hydrophytic vegetation must
be present for an area to be considered wetland under, normal circumstances.
This delineation was completed for the proposed construction of a studio/storage building on
this 1.04 acre parcel, which is situated on the south side of Merry Road. The topography is
fairly level with a gradual slope down to the west beginning roughly in the center of the
parcell The north half has'been cleared and a septic system was installed several years ago in
preparation for the studio/storage building. The south half is dominated mostly by an upland
forested community with a narrow forested wetland system along the west edge. The wetland
continues offsite to the east and West and becomes much wider as it continues offsite to the east
and is narrow as it approaches the west property line. The wetland meets the criteria for a
Category II system because it is part of a larger system that has a moderate to dense forested
and scrub shrub components with the potential for seasonal ponding in some areas of the
system. Category II wetlands have a 100 foot buffer wetland buffer required by the Jefferson
County Unified Development Code these buffers are to be measured horizontally from the
delineated wetland edge. All existing development on this parcel (the trailer pad and mound
septic system) is outside the required wetland buffer as is the proposed studio/storage building.
XOT~Jl,~.~.qt~l~e~-oqa~,rl~'t~4~h~agd,d~a~[i~Jg~ga[~ {~t~t2~gl~i~_~tJ~ regulated wetlands on
Chechopolous
October 28, 2002
Page 2
this parcel or on adjacent parcels that could effect the onsite development as delineated during
the site visit and by the completion of 3 test holes. Maps from the Jefferson County Soil
Survey and National Wetlands Inventory are included to verify the mapped soil units and
mapped wetland areas on or near the parcel.
The on-site soils are mapped as Bm Belfast silty clay loam wet variant with a Sh Semiahmoo
Muck map unit just off-site to the south, according to the Soil Conservation Service, Soil
Survey for the Jefferson County Area, Washington, August 1975. Semiahmoo and Belfast
soils are classified as hydric and are on the hydric soils list in Jefferson County. See enclosed
map for site located on soil survey and the enclosed description of the on-site soils.
The US Fish and Wildlife Service, National Wetlands Inventory (NWI), Nordland Quadrangle
maps two large wetlands offsite to the west that are classified Palustrine Forested Seasonally
flooded to the far west and a Palustrine, Scrub/Shrub, Emergent Temporarily flooded closer
to the site. The onsite wetland area is not mapped but would be classified as Palustrine,
Forested, Scrub/Shrub, Seasonally flooded. See attached map for site located on the NWI.
A single test hole was established in the wetland (Test Hole 1) and two are located in the
adjacent forested upland (Test Holes 2 and 3). At each test hole, the soils were examined for
the presence of hydric soil conditions and evidence of hydrologic conditions occurring either
in the hole or on the surface of the soil. In addition, the percent cover of the dominant plant
species within a 15-foot radius of the soil hole was recorded at each of the plots. A summary
of the data findings are provided in this letter and include the general conditions of the soil,
any evidence of hydrology seen in the test sites, and the dominant plant species. See attached
site plan for location of the upland and wetland test holes and the attached data forms for
additional information concerning the individual test holes.
Test Hole 1 (Data Form gl) is situated near the center of the on-site wetland to show typical
wetland conditions. The soil test hole revealed a single layer profile consisting of a sandy silt
loam with a matrix chroma of 10 YR 2/1. Hydrology was present at the test hole as saturated
Chechopoulas
October 28, 2002
Page 3
soils at the surface with evidence of standing water to about 6 inches around the test hole. At
the time of my visit there was no standing or flowing water however it appears as though it is
seasonally inundated and may flow to the east during the rainy season. The vegetation in this
area is dominated by red alder (Alnus rubra) FAC and Scoulers willow (Salix scouleriana)
FAC. The thick shrub layer is dominated by salmonberry (Rubus spectabilis) FAC with
lower percentages of hardhack (Spiraea douglasii) FACW. The thick herbaceous understory
is dominated by Water parsley (Oenanthe sarmentosa) OBL and slough sedge (Carex
obnupta) OBL with low percentages of manna grass (Glyceria spp.) OBL and horsetail
(Equisetum arvense) FAC. This area was determined to be wetland because there are positive
indicators present for each of the three wetland parameters.
Test Hole 2 (Data Form//2) was completed in the upland immediately adjacent to the
delineated wetland boundary, while Test Hole 3 (Data Form//3) was completed % way
upslope to the north near the existing primary mound. Test Hole 2 has a single layer soil
profile consisting of sandy loam with matrix chroma of 10 YR 3/2, without any mottles. Test
Hole 3 also has a single layer soil profile with matrix chroma of 10 YR 4/3 that consists of
very compact silty clay. Hydrology was present as moist soils but there is no evidence of
wetland hydrology for any portion of the growing season. The vegetation in the upland area is
mostly dominated by Douglas fir (Pseudotsuga menziesii) FACU; red alder (A. rubra) FAC
and Scouler's willow (S. scouleriana) FAC. The shrub is dominated by ocean spray
(Holodiscus discolor) UPL and salmonberry (R. spectabilis) FACU with low percentages of
Indian plum (Oemlaria cerasiformes) FACU and red elderberry (Sambucus racemosa) FACU.
The herbaceous layer is dominated unidentified mowed grasses; sword fern (Polystichum
munitum) FACU and trailing blackberry (Rubus ursinus) FACU with low percentages of
bracken fern (Pteridium aquilinum) FACU. The areas sampled at Test Holes 2 and 3 are
determined to be non-wetland because they lack positive indicators for all three wetland
parameters.
Chechopoulas
October 28, 2002
Page 4
The Jefferson County Unified Development Code specifies the use of the Department of
Ecology Wetland Rating System for Western Washington, Second Edition to determine the
appropriate wetland category. This wetland meets the criteria for a Category II wetland
because it scored 27 points on the attached DOE rating form scoring highest for having a two
vegetative communities and multiple plant species within each community. The wetland also
received a high number of points for having wide undisturbed buffers around 90 % of the
wetland. Category II wetlands carry a 100-foot wetland buffer measured horizontally from
the wetland edge according to Jefferson County Code. See attached information copied from
the Jefferson County Code for additional buffer requirements.
This project proposes to construct a studio/storage building near the northwest corner of the
property. There is an existing concrete trailer pad and an existing mound septic system on the
north half of the property (see attached site plan). The proposed building, existing septic
system and other structures have been kept on the north half of the property while the south
half has been left untouched. No additional clearing of the parcel is proposed at this time so
the remaining forested community will be left intact. The required 100-foot wetland buffers
have been maintained for the existing septic system and trailer pad and will be maintained for
the proposed studio/storage building. There should be no significant adverse impacts to the
on-site wetland caused by the proposed building.
In summary, a studio/storage building is proposed near the northwest comer of this parcel. It
borders the south side of Merry Road on Marrowstone Island. The south half of the property
consists of an undisturbed coniferous forest with moderate to dense shrub and herbaceous
understory while the north half was historically cleared and currently contains a mound septic
system and concrete trailer pad. There is a large Category II forested wetland along the south
end of the parcel that appears to be part of a much larger system. The wetland has very good
buffers that are dominated by coniferous and deciduous forested vegetation with moderate to
dense shrub and herbaceous species. Category II wetlands carry a 100-foot buffer measured
from the delineated wetland edge. The buffers were carefully measured and
Chechopoulas
October 24, 2002
Page 5
marked at the time of the delineation and all development activities both existing and proposed
are outside the 100-foot Wetland buffer. The proposed studio/storage building is located well
outside the required 100-foot buffer and will have no significant impacts on the delineated
wetland,
If there are any further questions concerning the non-wetland determination, please feel free
to contact me at (360) 876-2403.
Sincerely
Vaughn Everitt
Wetland Technician
Joanne Bartlett
Professional Wetland Scientist
Attachments
Rood (Priw[e)
. 1~24~ .~.~, Exis[. Fence Line
"'~Well Head~ ~ ~ 0.00' ~
Water Tank~
S ~ Iran
Loco[ion '"
Bldg. 2.04, , 0.~' ~ ) Exi SepticTank
~ist. Pump ~ , ~ / & Pump Tank
~ Ex CuAain Drain
LOT t4, OLSON & HAMBL~ON
S~081 ~10~ ~OWSIO~[
IS~ND, TAX F ~RCEL ~ ~
977700045, ~.1 4 ACRE z
~ ~
140'-0"
SITE PLAN C-lA
1 " : 40'
GEORGE & HELENA CHECHOPOULOS
P.O. BOX 193, NORDLAND, WA 98358
I--Ld'--I F-1 I I
40' 0 40' 80'
120'
DRAWN BY: G. CHECHOPOULOS
SURVEY1.DWG SIIE PLAN C-lA
Wiltermood Associates, ]
1015 SW Harper Road
Port Orchard, WA 983(
(360) 876-2403
5,
. !
NATIONAL WETLAN;
INVENTORY
Wiitermood Associates, Inl
1015 SW Harper Road
Port Orchard, WA 98367
(360) 876-2403
APPENDIX B
JEFFERSON COUNTY SOIL SURVEY
DESCRIPTION OF SOIL TYPES
The soils described in this appendix are excerpts, considered applicable to urban
development, taken from the Soil Conservation Service, Soil Survey of Jefferson County
Area, Washington, August, 1975. For further information, see pages 10 and 11 of the soil
survey.
The Belfast series consist of well-drained soils on floodplains. Slopes range from 1 to 2
percent and elevation ranges from 30 to 300 feet. These soils formed in alluvium under a
forest consisting mainly of Douglas fir, western red cedar, Sitka spruce, red alder, maple,
willow, cottonwood, salmonberry and sword fern. These soils are associated mainly with
Lummi and Swantown soils. This soil is well drained and permeability is moderate. Roots
penetrate to a depth of more than 60 inches. This soil holds about 9 to 11 inches of water
available for plants. Runoff is very slow and the hazard of water erosion is none to slight.
The soil is subject to overflow in places. About 65 to 75 percent of the acreage of this soil is
used for growing pasture, hay and fruit and vegetable crops. Wooded areas are used as a
source of woodland products, for wildlife habitat and recreation areas and for rural
homesites.
Bm Belfast sil _ty clay loam, wet variant. This nearly level soil is on floodplains. The upper
20 inches of the soil is silty clay loam and sandy clay loam. Below this, to a depth of 60
inches, is dominantly dark-gray or olive-gray, neutral or slightly acid, stratified fine sandy
loam, silt loam, and clay loam. This soil is poorly drained. Permeability is moderately
slow. This soil holds 10-12 inches of water available for plants. A seasonal water table is at
a depth of 1/2 to 1 foot. Most of the acreage of this soil is used for pasture.
APPENDIX B
JEFFERSON COUNTY SOIL SURVEY
DESCRIPTION OF SOIL TYPES
The soils described in this appendix are excerpts, considered applicable to urban
development, taken from the Soil Conservation Service, Soil Survey of Jefferson County
Area, Washington, August, 1975. For further information, see pages 38 and 39 of the soil
survey.
The Semiahmoo series consists of very poorly drained organic soils that formed in well
decomposed and disintegrated plant remains and overlying mineral soil material at a depth of
52 to 60 inches or more. The soils are in glacial basins or old displaced stream and river
channel ponded areas. Slopes range from 0-2 percent and elevation ranges from near sea
level to about 1,000 feet. These soils are associated with McMurray and Mukilteo soils.
This soil is very poorly drained and permeability is moderate. Roots penetrate to a depth of
60 inches. This soil holds more than 10 inches of water available for plants. Runoff is slow
or ponded and the hazard of erosion is generally slight or nonexistent. Along banks of open
drainage ditches, however, sloughing and slippage are common. A seasonal high water table
is at a depth of 0-1 foot.
Sh Semiahmoo muck, moderately shallow variant. This soil has a surface layer of black
muck 10 to 15 inches thick and in most places two to four layer of muck and mucky peat are
above the mineral soil material. A layer of diatomaceous earth, 2 to 5 inches thick, is
generally 10 to 18 inches below the surface. In many places the mucky peat laYer near the
bottom is 25 to 40 percent silt and clay. The depth to the underlying mineral soil material,
which includes loamy sand, sandy loam, sandy clay loam, sandy clay, and clay ranges from
24 to 48 inches. This soil is used mainly for growing grasses and legumes for livestock and
for garden truck and field crops.
Wetlands Rating Field Data Form
Background Information: ..
Name of Rater: 0~o.a~ ~o-~¢~ Affiliation: _b,~;t~e~ ~c~ Date: ~
Name of wetland (if known): ~l~eo~L~8 o.e~ ~Og~'~A!~tO ~
Government Iurisdiction of wetland:
Location: 1/4 Section: ~.l of 1/4 S: NIO Section: o~ Township: ~t~ . Range:
Sources of Information: (Check all sources that apply)
Site visit: )(- USGS Topo Mapi ~ NWl map: ~. Aerial Photo: ~ Soils survey:
Other: $~ Describe: t~D~TI..~/k{I~
When The Field Data form is complete enter Category here:
Q.1. High Quality Natural Wetland Circle Answers
Answer this question if you have adequale information or experience to do so.
If not find someone with the expertise to answer Ihe questions. Then, if the
answer to questions la, lb and lc are all NO, contact the Natural Heritage
program of DNR.
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. The
impacts of changes done earlier have probably been stabilized and the wetland
ecosystem will be close to reaching some new equilibrium that.may represent
a high quality wetland.
I al. Upstream watershed > 12% impervious. Yes: go to Q.2
la2. Wetland is ditched and water flow is not obstructed. Yes: go to Q.2
la3. Wetland has been graded, filled, logged. Yes: go to Q.2
la4. Water in wetland is controlled by dikes, weirs, etc. Yes: go to Q.2
Yes: go to Q.2
laS. Wetland is grazed-
1 a6. Other indicators of disturbance (list below)
t*,~ ,~ ~ ~' No: go to lb.
25
lb Are there populations of non-nativeplants which are currently present, YES: go to Q.2
cover more than 10% of the wetland, and appear to be invading native No: go to lc.
populations? Briefly describe any non-native plant populations and
Information source(s):.
lc. Is there evidence of human-caused disturbances which have visibly YES: go to Q.2
degraded water quality. Evidence of the degradation of water quality NO: Possible Cat. I
include: direct (untreated) runoff from roads or parking lots; presence,, contact DNR
or historic evidence, of waste dumps; oily sheens; the smell of organic
chemicals; or life. stock use. Briefly describe:
Q.2. Irreplaceable Ecological Functions:
Does the wetland:
~ have at lea.st 1/4 acre of organic soils deeper than 16 inches YES go to 2a
and the wetland is relatively undisturbed; OR
[IIf the answer is NO because the wetland is disturbed briefly describe:
Indicators of disturbance may include:
- Wetland has been graded, filled, logged;
- Organic soils on the surface are dried-out for
more than half of the year;
- Wetland receives direct stormwater runoff from
urban or agricultural areas.];
OR
(ii have a foresled cla-~s greater than I acre; YES: Go to 2b
OR
~ have characteristics of an estuarine system; YES: Go to 2c
OR
~ have eel grass, floating or non-floating kelp beds'? YES: Go to 2d
2a. Bogs and Fens
Are any of the three following conditions met for the area of organic soil?
2a. 1. Are Sphagnum mosses a common ground cover (>30%) and the
cover of invasive species (see Table 3) is less than 10%?
Is the area of sphagnum mosses and deep organic soils > 1/2 acre? YES: Category I
Is the area of sphagnum mosses and deep organic soils 1/4-1/2 acre'? YES: Category II
NO: Go to 2a.3
2a.2. Is there an area of organic soil which has an emergent class with at least
one species from Table 2, and cover ofinvasive species is < 10% (see Table 3)'!
ls the area of herbaceous plants and deep organic SOils > 1/2 acre? YES: Category I
Is the area of herbaceous plants and deep organic .~fils 1/4-1/2 acre'? YES: Category II
NO: Go to 2a.3
26
2a. 3. Is the vegetation a mixture of only herbaceous plants and Sphagnum
mosses with no scrub/shrub or forested classes?
Is the area 6f herbaceous plants, Sphagnum, and deep organic
soils > 1/2 acre? YES: Category I
Is the area of herbaceous plants, Sphagnum, and deep organic
soils 1/4-1/2 acre? YES: Category II
NO: Go to Q.3.
Q.2b. Mature forested wetland.
2b.1. Does 50% of the cover of upper forest canopy consist of evergreen YES: Category I
xees older than 80 years or deciduous trees older than 50 years? NO: Go to 2b.2
Note: The size of trees is often not a measure of age, and size cannot
be used as a surrogate for age (see guidance).
2b.2. Does 50% of the cover of forest canopy consist of evergreen trees older YES: Go to 2b.3
than 50 years, AND is the structural diversity of the forest high as NO: Go to Q.3
characterized by an additional layer of trees 20'-49' tall, shrubs 6' - 20',
tall, and a herbaceous groundcover?
2b.3. Does < 25% of the areal cover in the herbaceous/groundcover or YES: Category 1
the shrub layer consist ofinvasive/ex6tlc plant species from the list on p. 19'? NO: Go to Q.3
Q.2e. Estuarine wetlands.
2cl. Is the wetland listed as National Wildlil~ Refuge, National Park, YES: Category 1
National Estuary Reserve, Natural Area Preserve, State Park, or NO: Go tO 2c.2
Educational, Environmental or Scientific Reserves designated under
WAC 332-30-1517 .....
YES: Category I
2c.2. Is the wetland > 5 acres; ............................
Note: ff an area contains patches of salt tolerant vegetation that are
1) less than 600 feet apart and that are separated by mudflats that go
dry on a Mean Low Tide, or
2) separated by tidal channels that are less than 100 feet wide;
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 2c.4
27
2c.3. Does the wetland meet at least 3 of the following 4 criteria: ........ YES: Category I
NO: Category Il
- minimum existing evidence of human related disturbance such as
diking, ditching, filling, cultivation, grazing or the presence of non-
native plant species (see guidance for definition);
- surface water connection with tidal saltwater or tidal freshwater;
- at least 75% of the wetland has a 100' bufI~r of ungrazed pasture.
open water, shrub or forest;
- has at least 3 of the following features: low marsh; high marsh; tidal
channels; lago0n(s);woody debris; or contiguous freshwater wetland.
2c.4. Does the wetland meet all of the four criteria under 2c3. (above)'?.. YES: Category ti
NO: Category IH
Q.2d. Eel Grass and Kelp Beds,
2d:l. Are eel grass beds present? .................................. YES: Category I
NO: go to 2d.2
2d.2. Are there floating or non-floating kelp bed(s) present with greater than YES: Category I
50% macro algal cover in the month of August or September'! ......... NO: Category Il
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) ~V
by one species from Table 3 (page 19) or Table 4 (page 20 )
3b.. Is the wetland: less than two acres
and, hydrologically isolated,
with one vegetated class, and > 90% of areal cover is any combination o1:~' · V
species from Table 3 (page 19) ~NO: go to~.3~7,~~
3c. Is the wetland excavated from upland and a pond smaller than 1 acre ~V
without a surface water connection tO streams, lakes, rivers, or other
wetland, and ~has < 0. i acre of vegelation.
28
'Q.4. significant habitat value.
Answer ali questions and enter data re, quested. Circle scores that qualify
4a. Total wetland area acres rminls
Estimate area, select from choices in the near-right column, and score in the > 200 6
4(}- 200 5
l'ax column: ~ 1() - 4{) 4
Enter acreage of wetland here: q4 acres, and source: ~/~'~ ' 5 - 10 3
.< O. 1 0
4b. Wetland classes: Circle the wetland classes below that qualify:
Open Water: if the area of open water is > 1/4 acre
Aquatic Beds: if the area of aquatic beds > 1/4 acre,
[Emergent: if the area of emergent class is > 1/4 acre, # 9f classes Points
Scrub-Shrub: if the area of scrub-shrub class is > 1/4 acre, 2 ....... 3
Forested: if area of forested class is > 1/4 acre, 4 ....... 8
5 ....... 10
Add the number of wetland classes, above, that qualify, and then
score according to the columns at right.
, e.g. If there are 4 classes (aquatic beds, open waler, emergent &
scrub- shrub), you would circle 8 points in the far right column.
4c. Plant species diversity.
For each wetland class (at right) that qualifies in Class # s.rvecies in class I~oints
4b above, -Count the number of different plant species Aquatic Bed i 0
you can find that COver more than 5% of the ground. '2 1
You do not have to name them. 3 2
>3 3
Score in column at far right:
e.g. If a wetland has an aquatic bed class with 3 species} Emergent I 0
,an emergent class with 4 species and a scrub-shrub' 2-3 1
class with 2 species you would circle 2, 2, and I in thc cY 4-5 2
>5 3
far column.
Note: Any plant species with a cover of> 5%
qualifies for points within a class, even those Scrub-Shrub 1
2
that are not of that class.
3
Forested ~' I 0
3-4 2
>4 3
4d. Structural diversity.
If the wetland has a forested class, add I point if each of the following
classes is present within thc lbrcsted class and is larger lhan 1/4 acre:
-trees > 50' tall ..................... YES - 1
-trees 20'.- 49' tall ................... YES -
-shrubs ............................. YES ~
-herbaceous ground cover ..... - ........ YES - 1
Also add 1 point if there is any "open water" or "aquatic bed" class
immediately next to the forested area (ie. there is no scrub/shrub or
emergent vegetation between them). YES - 1
4e.. Decide from the diagrams below whether interspersion between High - 5
wetland classes is high, moderate,' low or none? If you think the Moderate
amount of interspersion falls in between the diagrams score accordingly Low - !
(i.e. a moderately high amount of insterspersion would score a 4, None - 0
while a moderately Iow amount would score a 2)
none low low
~ moderate high
4[ Habitat features.
!Answer questions below, circle features that apply, and score to right:
Is there evidence that the openor standing water was caused by beavers YES = 2
Is a heron rookery located within 300? YES = 1
Are raptor nest/s located within 300'? YES = 1
Are there at least 3 standing dead trees (snags) per acre greater than
10" in diameter at "breast height" (DBH)?. YES = 1
Are there at least 3 downed logs per acre with a diameter
> 6" for at least 10' in length? YES = 1
Arc there areas (vegetated or unvegetated) within the wetland that are
pondcd for at least 4 months out of the year, and the wetland has not
qualified as having an open water class in Question 4b. ? YES = 2
30
4g. Connection to streams. (Score one answer only.)
4g. 1. Does the wetland provide habitat for fish at any time of the year AND
does it have a perennial surface water connection to a fish bearing stream. YES = 6
4g.2 Does the wetland provide fish habitat seasonally AND does it have
a seasonal surface water connection to a fish bearing stream. YES = 4
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. YES = 4
4g.4 Does the wetland function to export organic matter through a surface
water connection to a stream on a seasonal basis? YES = 2
4h. Buffers.
Score the existing buffers on a scale of 1-5 based on the following four descriptions.
ff the condition of the buffers do not exactly match the description, score eithe~ a
point higlier or lower d~pending on whether the buffers are less or more degrader[
Forest, scrub, native grassland or open water buffers are present for
more than 100'around 95% of the circumference.
Forest, scrub, native grassland, or open water buffers wider than 100'
for more than 1/2 of the wetland circumference, or a forest, scrub,
circumference.grasslands' or open water buffers for more than 50' around 95 % of the
Forest, scrub, .native grassland, or open water buffers wider than IIX}'
for more than 1/4 of the wetland circumference, or a forest, scrub, native
grassland, or open water buffers wider than 50' for more than 1/2 of the
wetland circumference. Score = 2
No roads, buildings or paved areas within 100' of the wetland for more than
95% of the wetland circumference. Score = 2
No roads, buildings or paved areas within 25' of the wetland for more
than 95% of the circumference, or
No roads buildings or paved a~eas within 50' of the wetland for more than
1/2 of the wetland circumference. Score = 1
Paved areas, industrial areas or residential construction (with less than 50'
between houses) are less than 25 feet from 'the wetland for more than 95%
of the circumference of the wetland. Score = 0
31
4i. Connection to other habitat areas:
Select the descril~tion 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 Area7 YES = 5
- Is the wetland connected to any other Habitat Area with either 1) a forested/shrub
corridor < 100' wide, or 2) a a corridor that is > 100'wide, but has a low vegetative ~
cover less than 6 feet in height?
-Is the wetland connected to, or a part of, a riparian corridor between 50 - 100' wide
with scrub/shrub or forest cover connection to other wetlands? YES = 3
- Is the wetland connected to any other Habitat Area with narrow corridor (<100')
of low vegetation (< 6' in height)? YES = 1
- Is the wetland and its buffer (if the buffer is less than 50' wide) completely isolated
by development (urban, residential with a density greater than 2/acre, or industrial)? YES = 0
Now add the scores circled (for Q.5a - Q.5i above) to get a total. .
Is the Total greater than or equal to 22 points? ~"~'= Catel~iirv It)
2'7 NO = Category III
32
SECTION 3 ° LAND USE DISTRICTS
Remove or Alter Existing Native
Vegetation."
iii. In the case of short plat, long
plat, binding site plan, and site
plan approvals under this Code,
the applicant shall include on the
face of any such instrument the
boundary of the wetland and its
buffer.
iv. The applicant may also choose
to dedicate the buffer through a
conservation easement or deed
restriction that shall be recorded
with the Jefferson County
Auditor. Such easements or
restrictions shall, however, use
the forms approved by the
Prosecuting Attorney.
(5) Buffers - Standard Requirements.
The following buffer provisions shall
apply:
i. Buffer areas shall be required to
provide sufficient separation
between the designated wetland
and the adjacent proposed
project.
if. 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 to the
standard buffers as allowed in
Sections 3.6.9(d)(6), 3.6.9(d)(7),
or 3.6.9(d)(8), below.
iii. 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.
iv. All buffers shall be measured
perpendicularly from the wetland
boundary as surveyed in the
field.
3-30
Table 3-4.
v. Standard wetland buffer widths
shall be as established in Table
3-4.
Standard Buffer Widths for Wetlands
Wetland
Category
Standard
Buffer Width
I
II
III
IV
150 ft
100ft
5O ft
25 tt
(6)
(7)
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:.
i. Standard wetland buffer width
averaging as set forth in lhis
section is unfeasible.
ii. 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 func-
tions and values.
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:
i. A larger buffer is necessary to
maintain viable populations of
existing species.
ii. 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 outslanding poten-
tial habitat for those species, or
has unusual nesting or resting
sites (e.g., heron rookeries and
raptor nesting trees).
The adjacent land is susceptible
to severe landslide or erosion,
iii.
Unified Development Cede
Section 3. Land Use Districts
DATA IfL}RIVI
MODIFIED
ROUTINE ON SITE DETERMINATION METHOD
Fieldlnvestigator: Doxx.~,.. [ue~N~- Date: <ot,~ k- q, O~
ProjecffSite: County:~~ State:
ApplicanffOwner: ~m~ ~o~hopo~k~q Su~eyor:
Describe cu~em conditi~s of~e[Ia~d amd su~ounding ~eas: Dor~k ~u{~ titan,3
Has the vegetation, soils, angor hydrology been si~ificantly disturbed? Yes__No
If yes, what are modifiers:
Mapped Series: ~
Hydric soils list?: Yes K No__
Depth Horizon Color
Matrix Mottle
Texture
SOILS
Hydfic Inclusion?
Hvdfic Soil Mdicators Yes No
Is the hydric soil criterion met? Yes X' No
Rationale:
Histosol
GleyedHistic Epipedon
Sulfidic odor
Concretions
Depth
HYDROLOGY
General wetland type or characteristic: Emergent Scrub/Shrub
Permanently flooded Seasonally flooded Temporarily flooded~
Types of water bodies associated with the wetland: River Stream
Pond/Lake Tidal Drainage ditch/channel Other:
Is the ground surface inundated? Yes No A Surface water depth:
Is the soil saturated? Yes No ~( Depth to water in test hole:
Field evidence of surface inundatipn or,soil saturation: ';o t~ o ~t t-
is thee wetland h,~drology criterion rdet? Yes g~ No
Rat, onale: ~ ~'¢~,e.,,t~L ,~. ~, eta [~,,~ o r*
Forested
Saturated
Seep/Spring__
SUMMARY
Hydric soil present? Yes X No Hydrology present? Yes
Hydrophytic vegetation present? Yes '~ No
Percent of FAC, FACW, and OBL species:
Is the site a wetland? Yes < No
Rationale: ..~, ~.k~o_ t,.~o_.~'\e~,~
TEST HOLE # { OF 5
No
LOCATION ~F TES~tHOLE
SEE REVERSE FOR VEGETATION
Wiltermood Associates,'
1015 SW Harper Road
Port Orchard, WA 983{
(360) 876-2403
COMMON WETLAND AND NON-WETLAND VEGETATION
% cover
F'acific willow
Oregon ash
Quaking aspen
l~ed alder
Black cottonwood
$couler's willow
Dominant Tree Species
Other tree species present:
Salix lasiandra FACW
Fraxinus latifolia FACW
Populus tremuloides FAC+
Alnus rubra FAC
Populus balsamifera FAC
Salix scouleriana FAC
% cover
__ Sitka spruce
Western red cedar
Cascara
__ Bigleaf maple
Western hemlock
__ Douglas fir
Picea sitchensis FAC
Thuja plicata FAC
Rhamnus purshiana FAC-
Acer macrophyllumFACU
Tsuga heterophylla FACU
Pseudotsuga menziesii FACU
Dominant Shrub Species
klardhack Spiraea douglasii FACW
Red Osier Dogwood Comus stolonifera FACW
Black twinberry Lonicera involucrata FAC+
Devil's club OpIopanax horridus FAC+
S almonberry Rubus spectabilis FAC
Nootka rose Rosa nutkana FAC
Vine maple Acer circinatum FAC-
English ivy Hedera helix FACU
Red elderberry Sambucus racemosa FACU
Snowberry Symphoricarpos albus FACU
__ Other shrub species present:
Scot's broom
__ Evergreen huckleberry
__ Himalayan blackberry
Salal
__ Indian plum
Hazelnut
__ Red huckleberry
__ Oregon grape
__ Ocean spray
Cytisus scoparius FACU
Vaccinium ovatum FACU
Rubus discolor FACU
Gaultheria shallon FACU
Oemlaria cerasiformes FACU
Corylus cornuta FACU
Vaccinium parvifolium UPL
Berberis nervosa UPL
Holodiscus discolor UPL
Dominant Forb Species
Skunk cabbage Lysichitum americanum OBL
Cattail Typha latifolia OBL
Water parsley Oenanthe sarmentosa OBL
Slough sedge Carex obnupta OBL
Small fruited bulrush Scirpus microcarpus OBL
Tall manna grass Glyceria elata FACW
Sawbeak sedge Carex stipata FACW
Rushes Juncus spp. FACW
Soft rash Juncus effusus FACW
Creeping buttercup Ranunculus repens FACW
Reed Canary grass PhaIaris arundinacea FACW
__ Other forb species present:
__ Stinging nettle Urtica diocia FAC+
Spring beauty Claytonia sibirica FAC
__ Velvet grass Holcus lanatus FAC
__ Lady fern Athyriumfilix-femina FAC
__ Horsetail Equisetum arvense FAC
__ Youth-on-age Tolmeia menziesii FAC
__ Cat's ear Hypochaeris radicata FACU
__ Trailing blackberry Rubus ursinus FACU
__ Bracken fern Pteridium aquilinun, FACU
__ Sword fern Polystichum munitum FACU
__ Bleeding heart Dicentraforntosa FACU
Percent of dominant species FAC, FACW, OBL: 100
Is the hydrophytic vegetation criterion met? Y~s No
Rationale: ~'e. oJre.~'~ l,b,.e..~ ~t5"/~ e)~ .IL., Oeot
'~-- ~ W--
UPLAND? WETLAND? eX'
WETLAND TYPE: Palustrine X Riverine
Lacustrine Estuarine
Forested ;( Scrub/Shrub__
Emergent Open Water
Wet Meadow/Pasture
l~z~k 1 _~k 1~
MODIFIED
ROUTINE ON SITE DETERMINATION METHOD
Field Investigator: '%e*~ X-'~o~o, '~kee. l? .tt ~_ Date:
Project/Site: County: State:
Applicant/Owner: Surveyor:
Describe current conditions of v~etland and surrounding areas: %~,~.[[
Has the vegetation, soils, and/or hydrology been significantly disturbed? Yes No
If yes, what are modifiers:
SOILS
Mapped Series: '~r,- ~4~[~'~ ~- r,,,.. ~'
HycMc soils list?: Yes A, No__
Depth Horizon Color Texture
Matrix Mottle
Hydric Inclusion?
Hydric Soil Indicators Yes
Histosol ,(
Histic Epipedon
Gleyed
Sulfidic odor
Concretions
Is the hydric soil criterion, met? Yes. No
Rationale: %o'4[
No Depth
HYDROLOGY
General wetland type or characteristic: Emergent Scrub/Shrub Forested
Permanently flooded. Seasonally flooded Temporarily flooded Saturated
Types of water bodies associated with the wetland: River Stream Seep/Spring__
Pond/Lake Tidal Drainage ditch/channel Other:
Is the ground surface inundated? Yes No X. Surface water depth:
Is the soil saturated? Yes No K Depth to water in test hole:
Field evidence of surface inundation or soil saturation: -. ~
Is the wetland hydrology criterion met? Yes No
Rationale: a,'o £o.. &'cc~l-o,~ ,o ex"-t
SUMMARY
Hydric soil present? Yes
Hydrophytic vegetation present? Yes ~. No
Percent of FAC, FACW, and OBL species:
Is the site a wetland? Yes No .X
Rationale: ~-[~ [k.r..e. voe.4-k,~., c~
- ¥
TEST HOLE # 7._ OF
No ~- Hydrology present? Yes
No (
LO,CATION TEST HOLE
SEE REVERSE FOR VEGETATION
Wiltermood Associates,'
1015 SW Harper Road
Port Orchard, WA 983~
(360) 876-2403
COMMON WETLAND AND NON-WETLAND VEGETATION
vfo coyer
?acific willow
~ Oregon ash
__ Quaking aspen
~_ Red alder
Black cottonwood
$couler's willow
Dominant Tree Species
Other tree species present:
Salix lasiandra FACW
Fraxinus latifolia FACW
Populus tremuloides FAC+
Alnus rubra FAC
Populus balsamifera FAC
Salix scouleriana FAC
%coyer
__ Sitka spruce
Westem red cedar
Cascara
__ Bigleaf maple
Western hemlock
__ Douglas fir
Picea sitchensis FAC
Thuja plicata FAC
Rhamnus purshiana FAC-
Acer macrophyllumFACU
Tsuga heterophylla FACU
Pseudotsuga menziesii FACU
Dominant Shrub Species
__ Hardhack Spiraea douglasii FACW
_ .. Red Osier Dogwood Cornus stolonifera FACW
__ Black twinberry Lonicera involucrata FAC+
~ Devil's club Oplopanax horridus FAC+
~ Salmonberry Rubus spectabilis FAC
Nootka rose Rosa nutkana FAC
__ Vine maple Acer circinatum FAC-
__ English ivy Hedera helix FACU
__ Red elderberry Sambucus racemosa FACU
Snowberry Symphoricarpos albus FACU
__ Other shrub species present:
Scot's broom
__ Evergreen huckleberry
__ Himalayan blackberry
Salal
__ Indian plum
Hazelnut
__ Red huckleberry
__ Oregon grape
__ Ocean spray
Cytisus scoparius FACU
Vaccinium ovatum FACU
Rubus discolor FACU
Gaultheria shallon FACU
Oemlaria cerasiformes FACU
Corylus cornuta FACU
Vaccinium parvifolium UPL
Berberis nervosa UPL
HoIodiscus discolor UPL
Dominant Forb Species
Skunk cabbage Lysichitum americanum OBL
Cattail Typha latifolia OBL
Water parsley Oenanthe sarmentosa OBL
Slough sedge Carex obnupta OBL
Small fruited bulrush Scirpus microcarpus OBL
Tall manna grass Glyceria elata FACW
Sawbeak sedge Carex stipata FACW
Rushes Juncus spp. FACW
SoR rush Juncus effusus FACW
Creeping buttercup Ranunculus repens FACW
Reed Canary grass Phalaris arundinacea FACW
__ Other forb species present:
Stinging nettle Urtica diocia FAC+
Spring beauty Claytonia sibirica FAC
Velvet grass Holcus lanatus FAC
Lady fern Athyriumfilix-femina FAC
Horsetail Equisetum arvense FAC
Youth-on-age Tolmeia menziesii FAC
Cat's ear Hypochaeris radicata FACU
Trailing blackberry Rubus ursinus FACU
Bracken fern Pteridium aquilinum FACU
Sword fern Polystichum munitum FACU
Bleeding heart Dicentraformosa FACU
Percent of dominant species FAC, FACW, OBL: '~1 I
Is the hydrophytic vegetation criterion met? Yfs_:X.__No
UPLAND? .)~ WETLAND?
WETLAND TYPE: Palustrine Riverine
Lacustrine Estuarine
Forested Scrub/Shrub .
Emergent .Open Water
Wet Meadow/Pasture
DATA FOR[VI
MODIFIED
ROUTINE ON SITE DETERMINATION METHOD
Fieldlnvestigator: ~-)e~ ~)e,kye., '5.~ee.~- Date:
Project/Site: County: State:
Applicant/Owner: Surveyor:
Describe current condmons of wetland a~d surrounding areas: x,~m,.o,k boce<~,k ~t>\o,,~6
Has the vegetation, soils, and/or hydrology been significantly disturbed? Yes No g
If yes. what are modifiers:
SOILS
Mapped Series: ~-,_~ ~=~_\[~_ ~L
Hydric soils list?: Yes ___~q___No__
Depth Horizon
Matrix Mottle
Is the hydric soil, criterign met? Yes
·
Rationale:
Hydric Inclusion?
Texture Hydric Soil Indicators Yes No
Histosol
S~..~&. ~,,.~Histic Epipedon
~ ' Gleyed
Sulfidic odor
Concretions
Depth
HYDROLOGY
General wetland type or characteristic: Emergent__Scrub/Shrub
Permanently flooded Seasonally flooded Temporarily flooded
Types of water bodies associated with the wetland: River Stream
Pond/Lake Tidal Drainage ditch/channel Other:
Is the ground surface inundated? Yes No Y,, Surface water depth:
Is the soil saturated? Yes No '4 Depth to water in test hole:
Field evidence of surface inundation or soil saturation:/tJ0,~o&-"'
Forested
Saturated
Seep/Spring__
Is the wetland hydrology cri,terion met? Yes No )t.. ..
Rationale:
SUMMARY
Hydric soil present? Yes__No :< .Hydrology present? Yes
Hydrophytic vegetation present? Yes No
Percent of FAC, FACW, and OBL species:
Is the site a wetland? Yes , .No_X __
Rationale: ~[t, l{l..,re_* ~,o~..~-\c,,.~.
TEST HOLE# '-~ OF %
LOCATION OF TEST HOLE
SEE REVERSE FOR VEGETATION
No ~
Wiltermood Associates, 1
1015 SW Harper Road
Port Orchard, WA 9836
(360) 876-2403
COMMON WETLAND AND NON-WETLAND VEGETATION
% cover
F'acific willow
Oregon ash
Quaking aspen
l~.ed alder
Black cottonwood
$couler's willow
Dominant Tree Species
Other tree species present:
Salix lasiandra FACW
Fraxinus latifolia FACW
Populus tremuloides FAC+
Alnus rubra FAC
Populus balsamifera FAC
Salix scouleriana FAC
% cover
__ Sitka spruce
Western red cedar
. Cascara
. Bigleaf maple
Western hemlock
X 30 Douglas fir
Picea sitchensis FAC
Thuja plicata FAC
Rhamnus purshiana FAC-
Acer macrophylIumFACU
Tsuga heterophylla FACU
Pseudotsuga menziesii FACU
Dominant Shrub Species
~ I-tardhack Spiraea douglasii FACW
~ Red Osier Dogwood Comus stolonifera FACW
Black twinberry Lonicera involucrata FAC+
~ Devil's club Oplopanax horridus FAC+
5" Salmonbeny Rubus spectabilis FAC
- Nootka rose Rosa nutkana FAC
-- Vine maple Acer circinatum FAC-
~ English ivy Hedera helix FACU
~ Red elderberry Sambucus racemosa FACU
_ Snowberry Symphoricarpos albus FACU
Other shrub species present:
Scot' s broom
Evergreen huckleberry
Himalayan blackberry
Salal
Indian plum
Hazelnut
Red huckleberry
Oregon grape
Ocean spray
Cytisus scoparius FACU
Vaccinium ovatum FACU
Rubus discolor FACU
Gaultheria shallon FACU
Oemlaria cerasiformes FACU
Corylus cornuta FACU
Vaccinium parvifolium UPL
Berberis nervosa UPL
Holodiscus discolor UPL
Dominant Forb Species
Skunk cabbage Lysichitum americanum OBL
-- Cattail Typha latifolia OBL
-- Water parsley Oenanthe sarmentosa OBL
Slough sedge Carex obnupta OBL
-- Small fruited bulrush Scirpus microcarpus OBL
-- Tall manna grass Glyceria elata FACW
-- Sawbeak sedge Carex stipata FACW
-- Rushes Jutlctts spp. FACW
-- Soft rash Juncus effusus FACW
-- Creeping buttercup Ranunculus repens FACW
-- Reed Canary grass Phalaris arundinacea FACW
Other forb species present:
Stinging nettle Urtica diocia FAC+
Spring beauty Claytonia sibirica FAC
Velvet grass Holcus lanatus FAC
Lady fern Athyriumfilix-femina FAC
Horsetail Equisetum arvense FAC
Youth-on-age Tolmeia menziesii FAC
Cat's ear Hypochaeris radicata FACU
Trailing blackberry Rubus ursinus FACU
Bracken fern Pteridium aquilinum FACU
Sword fern ?oIystichum munitum FACU
Bleeding heart Dicentraformosa FACU
Percent of dominant species FAC, FACW, OBL:
Is the hydrophytic vegetation criterion met? ~es NoX _
UPLAND? _/ WETLAND?
WETLAND TYPE: Palustrine Riverine___
Lacustrine Estuarine
Forested_ Scrub/Shrub
Emergent .Open Water_~
Wet Meadow/Pasture