HomeMy WebLinkAboutWetland Delineation 11/09/2007 601105002
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November 9, 2007
. Bonnie Story and Lawrence Thomsen
PO Box 56
Quilcene,WA 98376
APR 1 0 2008
JEFFERSONCOUNTYnCn
RE: Wetlcmd Delineation and Categorization on the five acre parcel at 293 Biueberry Hill
Drive (Tax Parcel No. 601l(5002) in Quilcene, leffersonCounty, Washington.
This parcel is located'in the NE, 14 of the SE 14 of Section iO Township 26 N~ge
1 West.WM.
Dear Bonnie. and Lawrence:
This delineation was completed on Qctober 26, 2007 using the Departmehtof Ecplogy
. Washington State Wetlands Identification and Delineation Manual, in accordance with the
Jefferson County Critical Ateas Ordinance. This manual requires the use, of the three-
wetlandparamete;r methodology when detennining the p'rese~ceor'absence of wetlands.
A,11 three parameters of wetland hydrology, hydric soilsandhydrophytic vegetation Jllust be
present for an area under normal circumstances to meet the wetland criteria. The siteahd
wetiand are under nonnal circumstances so the Routine On-Site Detennination Method was
used to delineate the wetlands and document the absence of wetlands on the rest of the
property .
Thisabout five acre, rectangular shaped parcelis located at 293 Blueberry Hill Drive (Tax
Parcel No. 601105002) in Qui1cene, Jefferson County, Washington. A garage sits midway
alongtbe north propertyJine apd is accessed by a gravel drive that extends onto the parcel
from the southeast comer and continues to the north property line extending westerly
towards the garage. A septic system is situated near the south property line and a well is
west of the garage. The center of the parcel has been cleared ill preparation of building a
single family home. The rest of the parcel is dominated by a young coniferous/deciduous
forest of Douglas fir and red alder. The parcel is bordered to the north and south by low
density residential development, east by Blueberry Hill Drive and westby Coyle Road.
1015 S.W Harper Road, Port Orch;p-d, Washington 98367 (360) 876-2403 Fax (360) 876-2053
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Story/Thomsen
November 9, 2007
page 2
The property was logged about 10 years ,ago and is now dominated by a young tree layer of
red alder, Douglas fir and western hemlock with areas of dense salal and 'bracken fern,in
the understory. The topography slopes gently down from the east edge and west half
. towards the center of the east half. A linear narrOW wetland with emergent, scrub/shrub
and forested components was identified near the center of the property and expands offsite
to the north and south. 1'his wetland meets the criteria for>~Category II wetland and
" . . .~
requires a 100 footbufferwitll a 5 foot building setback from the buffer edge. The, wetland
continues across tile adjacent south property and eventually drains to Hood CanaL
According to the ]~fferson CountY W~tland Inventory, the wetland extends across'the
property and ends abruptly about halfway across the adjacent south parceL Ahome
attach.ed to the existing garage, is proposed near the center of the parcel outside ,the, wetland
buffers. This 1etter has been prepared to document the conditions within the delineated
wetland and uplands. It includes adescription of the wetland and upland data collected in
the field, on-site soils, wetland mapping, the wetland category arid its required buffer,s. '
The onsite soils are mapped as SuC Sinclair gravelly sandy loam, 0-15% slopes over most
of the parcel with DaC Dabob very gravelly. sandy loam, 0-15% slopes on the southeast
comer according to the'National Resources Conservation Service, online soil survey,
October 2007. these soils are not classified as hydric and do not containl1ydric inclusions.
Sinclair and Dabob soils are subject to perched water tables during the winter months where
wetlands sometimes form. See enclosed map for site,located on the soil survey and
enclosed soil descriptions for .additional information on the mapped soils.
TheUS Fish and Wildlife Service (USFWS), National Wetlands Inventory (NWI), Quilcene
Quadrangle, maps' aPalu&trine Scrub/Shrub Seasonally Flooded (PSSC) system extending
from the north to south property lines~ PalustrineE~e~~nt Semi-permanently Flooded
systems (PEMF) are mapped to ~~:~rihltiJ(~e\'n1ofeLn<an 150 feet offsite. See enclosed
map for site located on the NWL
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RECF,XVED
Story/Thomsen
November 9, 2007
page 3
APR.1 0 2008
JEffERSON CUUNI Y uCO
Theonsite portion of wetland is dominated byemergel1t and scrub/shfubvegetation
communities with an off site , forested community to the south and'anemergent community to
the north. Only the west side of the wetland was delineated siIicethis is the edge closest to
the proposed home. This portion of wetland was delineated withllotange flags labeled
. WB A-ltoWB A-l1. The delineation begins near the north property line and heads to the
south line. A total offivetest holes were conductedinand neat the wetland as well as near
. .
the proposed building area. Test Holes 2 and 3 are located in the wetland and Test Holes 1,
4 and 5 are located in the upland. See attached drawing ~orthe location of the wetland
boundary flags and test holes.
At each test hole, a 16-inch soil pit was dug to document the presence or absence of hydric
(wetland) soil conditions and the presence or absence, of wetland hydrology indicators. The
soil chroma was recorded for the soil pFOfile to document the absence of hydric (wetland)
soil conditiollS and the presence or absence of wetland hydrology and/or wetland hydrology
indicators (indicators include standing water on surface or in test hole~ surface scouring;
water stainedvegetation;driftlines; and/or oxidized root channels in the soil). In a 30':foot
diameter circle around the holes, the dominant vegetation is recorded in order to detennine
Whether or not the hydrophytic, vegetation criterion is met. If there is greater than 50 %
cover by plants having indicator statusofFAC (equally likely in wetlands and uplands);
FACW (67-99% of the time in wetlands); and/or OBL (greater than 99% of the time in
wetlands), then the hydrophytic vegetation criteria is met. The,data collected at each test
. hole was recorded on the attached data fonns and briefly described in the following
sections. See attached data forms.
Test Hole 2 is located in the emergent cotnmunity dominating the north half and Test Hole
3 is in the Scrub/Shrub community dominating the south half. The emergent vegetation
community at Test Hole 2 is dominated by a thick layer of slough sedge (Carex obnupta)
OBL. The shrub community at Test Hole 3 is dominated by western crabapple (Malus
fusca) FACW that has lower percentages of salal (Gaultheria shallon) .FACU present with
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Story/Thomsen
November 9, 2007
page 4
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a thick herbaceous layer of slough sedge (c. obnupta) OBL. The soil holes revealed single
layer profiles of peat that have a matrix chroma of 10 YR 2/LWetlandhydrologywas
present at both test holes as saturation with water to the surface of the soil holes. Other
areas of the wetland were flooded at the tipIe of the site visit. the wetland is fed by surface
runoff, direct precipitation and possible'aperched Water table. There were no defined
stream channels identified in. the wetland but water appears, to sheet flow southward through
the system. Water drains' to a ravine south of Blueberry Hill and eventually discharges into
Hood Canal. The areas saIIlpled at these test holes are wetland because positive indicators
areptesent for, all, three parameters.
Test Hole 1 is located in a forested upland community near the nortbproperty line just west
of the wetland. The area is dominated by a young red alder (4. rubra) FAC canopy layer.
The sparse understory consists of low percentages of hardhack (Spiraea, douglasil) FACW;
Himalayan blackberry (Rubus armeniacus)FACU; slough sedge (c. obnupta) OBL;
bracken fern (Pteridium aquilinum) FACU; Canadian thistle (Cirsium arvense)F ACU +
and trailing blackberry (Rubus ursinus) FACU. The soil hole revealed a single layer profile
of gravelly sandy loam, that has a matrix chroma of 10 YR 3/3. Therewas no hydrology at
the time of the field visit and there is nQ evidence of wetland hydrology . The area sampled
at this test hole is upland because positive indicators are not present for any of the three
parameters.
Test Hole 4 is located at the south edge of the clearing where' a small patch of forest
remains. The treelayerin this small patch of vegetation is dominated by young red alder
(A. rubra) FAC with a lower percentage of pacific madrone (Arbutus menziesii) UPL
present. The understory vegetation is dominated by slough sedge (c. obnupta) OBL with
lower percentages of western red cedar (T. ]ilicata) F AC saplings and trailing blackberry
(R. ursin us) FACU also present in the herbaceous layer. The soil hole revealed a single
layer gravelly sandy loam profile that has a matrix chroma of 10 YR 4/3. There was no
Story/Thomsen
November 9, 2007
page 5
hydrology at the time of the field visit and there is no evidence of wetland hydrology . The
area sampled at this test hole is non wetland even though the sample area is dominated by
. .
OBL and FAC vegetation because positive indicators are not present for hydric soil or
wetland hydrology.
Test Hole 5 is located in an area of young forest, west of the proposed home. The shrub
l~yer is dominated by red alder (A. rubra) FACand salal (G. shallon)FACU with lower
percentages of western hemlock (Tsuga heterophylla)F ACU; Douglas fir (Pseudotsuga
menziesii)'FACU; pacific'madrone (A. ,'menziesil) UPL and. Oregon grape (Mahonia
nervosa)FACU present. Bracken fern(Pteridiumaquilinum) FACU dominates the
herbaceous layer in the area sampled at this test hole., The soil hole revealed a single
gravelly sandy loam profile tha~ has a matrix chroma of 10 YR 4/3. There was no
hydrology at the time of the site visit, and, there is no evidence, of wetland, hydrology. The
area sampled at Test Hole 5 is upland because positive indicators are not present for any of
the' three parameters.
The Jefferson County Critical Areas Ordinance requires ,that identified and delineated
wetlands be categorized using the Department of Ecology, Wetland Rating System for
Western Washington,Second Edition. This system utilizes a fating form that differentiates
wetlands according to specific characteristics and assigns points onhow well individual
wetlands fit listed characteristics. This wetland meets the criteria for a Category II system
since it scored a total of 30 points on the rating form (22 points is the minimum point total
for Category II wetlands). The, wetland is about three acres in size and has three vegetation
communities with low diversity in each community with a moqerate interspersion of plant
communities. It has habitat features such as downed logs and areas ofponding that do hot
"
qualify as open water. T~etland exports organic matter into a stream on a seasonal basis
and does not have fish usage.) The buffers consist of at least 100 feet'offorest and shrub
for more than half of its circumference. Jefferson County has confirmed the Category'II
categorization for this system for the single family project to the north.
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November 9,2007
page 6
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Category.1I wetlands'.require a 100 foot buffer with a 5 foot building setback measured
from the wetland buffer edge according to the Jefferson County Critical Areas Ordinance.
Wetland buffers, are measured' horizontally from the, delineated wetland edge. ,The wetland
extends offsite to the north and south. Theoffsite wetland to the.south will have buffers
extending across the south 'property line. The offsite,wetland,buffers will not affect the
proposed project because the home is located more than 120 feeffrom the offsitewetland
edge.
A home attached to' the existing garage is proposed' and will use the existmg.septic system
and well. Although a site plan has not been developed, it appears the home. can be situated
outside the wetland and wetland buffers . Measurements were taken at the time of the site
visit and the garage is situated more than 130 feet from the closest wetland edge (western
edge). According to the measurements, the offsiteportion of wetland will only extend
about 25 feet onsite.There should be no impacts to the wetland as a result of the home
construction because the home and garage are situated outside the wetland buffer . The
existing driveway will ,be utilized to access the home and garage so there,will be no new
impacts to the wetland. The wetland buffers have been established to protect wetland
systems from uPland development and in this case since the single, family home is proposed
outside of the wetland and wetland buffers and the existing roadwill be used there should
be no negative impacts to the wetland.
In summary, this five acre, rectangular shaped parcel is located at 293 Blueberry Hill Drive
in Quilcene, Jefferson County, Washington. A garage sits midway along the north property
line and is accessed by a gravel drive that extends onsite from the s~)Utheast corner and
continues to the north property line extending westerly towards the garage. A septic system
is situated near the south property line and a well is west of the garage. The center of the
parcel has been cleared in preparation of building a single family home. The rest of the
parcel is dominated by a young coniferous/deciduous forest of Douglas fir and red alder.
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Story/Thomsen
November 9, 2007
page 7
APR 10 2003
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The topography slopes gently down from the east edge and west half to the center of the
. '
east halfof the property. The parcel is bordered to the north and south by low density
residential development, east by Blueberry Hill Drive and west by Coyle Road.
A linear narrow wetland with emergent, scrub/shrub and forestedcomponentsw~s
identified near the center Of the property and. expands offsite to the south and nortl1. This
wetland meets the criteria for ,a Category, II wetland and a 1OP' foot buffer is required witll a
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5 foot building setback from the buffer edge. Water flows southerly into a stream situated
. in the bottom of a ravine south of Blueberry Hill Drive and eventually drains to Rood
Canal. A homeauached to the existing garage is proposed near the center of the parcel and
will be accessed using the existing driveway : There should 110t be significant impacts to the
wetland as a result of the conStruction since the home is proposed more than 100 feet from
the wetlanq edgeangthe existing driveway will be utilized for acc,ess. The buffers have
been established to protect the critical areas,and.since'the buffers will be' maintained and
they are already well vegetated with tree, shrub and herbaceous layers there should be no
impacts to the wetland.
If there are any questions concerning the delineation and letter" please feel free to contact
me at (360) 876-2403.
Sincerely,
...
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J oanneBartlett
Professional Wetland Scientist
Jennifer Dadisman
Wetland Technician
Attachments
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Site Address: 293 Blueberry Hill Drive
Quilcene, W A
Tax Parcel No. 601105002
Acres: ~ 5
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WETLAND - CATEGORY II
Wetland Boundary Flags, WB A-I to WB A-II
Test Holes =E:)TH, 1-5
100 Foot Buffers with a 5 Foot Building setbac1'~
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Quilcene, W A 98376
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Legend
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Map center: 470 45' 25" N, 122046' 59" W
This map is a user generated static output from an Internet mapping site and is for general reference only. Data layers that appear on this map mayor may not be
accurate, current, or otherwise reliable, THIS MAP IS NOT TO BE USED FOR NAVIGATION,
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Scale: 1 :9,422