HomeMy WebLinkAboutWetland Delineation Report 995600015
Prepared for:
Bob Hanington
6761 38th Ave SW
Seattle, WA 98126
Bob Harrington
Wetland Delineation Report
Parcel # 995-600-015
November 2003
Port
98368
360
dixie@cablespeed.com
Bob Harrington
Wetland Delineation Report
Parcel # 995-600-015
November 2003
Contents
Introduction
Description of Site
Applied Methodology
Washington State Wetland IdentifICation and Delineation Manual
Soils
Vegetation
Hydrology
ClassifICation
Determining Wetland Edges
Findings
Soils
Vegetation
Hydrology
ClassifICation
Summary
References
Appendix
Sheet # 1 Location Map and Soil Survey Of Jefferson County Of Washington
Sheet #2 Findings Map
Wetlands Rating Field Data Form
Data FormS, Routine Determination W A State Wetland Delineation Manual
Bob Harrington
Wetland Delineation Report
Parcel # 995-600-015
November 2003
Introduction
At the request of Bob Harrington a wetland delineation was conducted on November 20.
2003. The subject parcel is adjacent to the Golf Course and east of Argyle Lane. in Port
Ludlow, Washington. The lot owned by Bob Harrington has been previously mapped
within wetland bOlmdaries. according to the Jefferson County Critical Areas Maps. The
goal of the wetland delineation was to determine wetland locations, wetland
classifications. and associated restrictive buffers that would restrict a building envelope.
This site was evaluated during a Level I Wetland Assessment on July 15. 2003 for a
potential buyer.
All wetlands within Jefferson County are subject to requirements outlined in the Jefferson
County Unified Development Code (UDC) dated January 1. 2001. Land use restrictions
will apply to all finure developments associated with this parcel.
Description of Site
· Legal Description: Parcel #995-600-015 Lot 15 S21. T28. RIE WM
· Location: East of Argyle Lane. off Cameron Drive, Port Ludlow. Wash. (Appendix
Sheet # 1: Location Map)
· Soils: Ale Alderwood gravelly sandy loam.. and OlD Olete-Alderwood complex. and
Bk. Belfast Silt Loam. Wet Variant (Appendix Sheet # 1: Soil map)
· Slopes: 0 to 15% slopes
The subject parcel is west of the 7th hole on the Port Ludlow Gold Course. The relatively
flat lot is forested with large alders. hemlock. and spruce with a dense understory of
shrubs and ferns. A small stream approximately defines the northern boundary of the lot.
The stream has been channeled under the golf course and to the site. It is described as a
drainage easement on the parcel map. The subject parcel. Lot 15. is within a residential
neighborh~ there are houses on the lots to the south (Lot 16) and across the Argyle
Lane. Lot 14 is not developed.
Harrington Wetland Delineation
Report File Number 2003-0246-t
1
Olympic Wetland Resources. Inc. 11 03
Applied Methodology
]be following resources were consulted for this project:
. Jefferson COWlty Critical Areas Map Wetlands (1995) Sheet #3, included in Appendix
. Jefferson COWlty Unified Development Code (January 1,2001)
. Soil Swvey of Jefferson COWlty (U.S. Soil Conservation Service 1975)
. Washington State Wetland Identification and Delineation Manual
. National List ofPIant Species That Occur in Wetlands: Northwest (Region 9)
Washington State Wetland Identification and Delineation Manual
Fieldwork to determine the actual wetland bOlmdaries was conducted according to the
methodology outlined in the Washington State Wetland Identification and Delineation
Manual (Department of Ecology #96-94). Chapter 173-22 of the Washington
Administrative Code requires that all wetlands within the State of Washington be delineated
using this manual.
]be methodology outlined in the Washington State Wetland Identification and Delineation
Manual requires examination of the three parameters for a positive wetland determination:
hydric soils, hydrophytic vegetation. and hydrology. For an area to qualify as a
jurisdictional wetland it must have a positive indicator from all three parameters. All
wetlands identified using this methodology may be federally regulated. regardless of size.
Soils
A hydric soil is a soil that forms Wlder conditions of saturation. flooding, or ponding
lasting long enough during the growing season to result in an anaerobic upper layer.
Hydric soils favor the growth and regeneration ofhydrophytic vegetation. The indicators
for this type of soil include low chroma. mottles. gleying, and high organic content within
the upper 32 inches of the soil profile. Holes were dug on the site and soil colors (including
value and chroma) were recorded in the top 16 inches. Soil colors were analyzed using the
Munsell Color Charts (1992).
Vegetation
Wet:land plant species must constitute greater than 51 % of the total vegetation present to
meet the qualification as a site dominated by hydrophytic vegetation. Dominance of pIant
species is determined by calculating actual aerial cover within a 30-foot radius for trees. a
100foot radius for shrubs. and a 6-foot radius for the herbaceous layer at each data point.
Commonly occurring plant species have been rated by the United States Fish and Wildlife
Service (USFW) National List of Plant Species That Occur in Wetlands: Northwest
(Region 9) as to their frequency of occurrence in wetlands and non-wetlands. During the
Harrington Wetland Delineation
Repon File Number 2003-024tH
"')
Olympic Wetland Resources. Inc. II 03
fieldwork, each species was recorded and given a rating based on indicator status and
percent cover.
Hydrology
Wetland hydrology is defined in the Washington State Wetland Identification and
Delineation Manual as -areas that are periodically intmdated or have soils saturated to the
swface at some time during the growing season. - Areas must have seasonally intmdated or
saturated soil at least 11.5% of the growing season. Indicators of hydrology include visual
obselVation of intmdation or soil saturation.. water-stained leaves, cracking of the soil
swface, and/or sediment deposits. Positive signs of hydrology are often absent during the
swnmer and fall months but can be inferred if there are positive indicators of hydric soil and
hydrophytic vegetation.
Classification
Wetland categorization was determined using the Washington State Department of
Ecology (DOE) Wetland Rating System (publication #93-74. August 1993). which
assigns a numerical value to any given wetland according to wetland size. quality of
SWTOtmding buffers, vegetation diversity. wetland types. and habitat value. Wetlands are
rated as entire systems and quite often exceed project botmdaries ratings. which range from
Class I to Class N. Class I is the highest quality wetland and is not replaceable. Class 1 Il
III and N wetlands receive protective buffers of 150', 1 00', 50'. and 25', respectively.
Determining WetIand Edges
Wetland edges were determined by establishing two data points: one within the wetland
which contained positive indicators of all three of the wetland requirements: soils.
hydrology, and vegetation. and another data point outside the wetland, where one or all of
the requirements were not present. Measurements were taken with a Chainman II hip chain
from an existing southeastern comer post marker.
Findings
The Jefferson COtmty Wetland Map indicates that the entire parcel is within a wetland.
The wetland delineation reveals wetland/upland edge to be defined by a distinct drop in
elevation (2-3 foot drop) and associated with a perennial stream. This wetland edge runs
nearly parallel to most of the northern property botmdary. The majority of the subject
parcel is outside the delineated wetland since there was not a dominance of wetland
vegetatio~ presence of hydrology, or wetland soils identified. However, Lot 15 will have
restrictions from the associated buffers of the stream and wetland.
Harrington Wetland Delineation
Repon File Number 1003-01464
..,
:)
Olympic Wetland Resources. Inc. 1103
The rating for this wetland is 22 points; a Class II wetland with IOO-foot buffers. The
entire lot falls entirely within wetland buffers therefore future building projects could
. .
reqUITe a vanance.
The wetland was flagged with pink plastic ribbon labeled "Wetland BOlmdary:' tied at
intervals of approximately 20 feet apart along the wetland edge. The wetland edge is
contiguous with the drop in topography and distinct vegetation change. Flagging is labeled
with alphanumeric codes (AI through A 7). The data point locations, wetland edges, and
buffers are indicated on the Findings Map in the Appendix (Sheet #2).
Soils
Jefferson COWlty Soil Survey (page 55) lists soils on site as Ale AldelWood gravelly
sandy loam., OlD Olete-AldelWood gravelly sandy loam, and Bk Belfast silt loam., wet
variant. Belfast is classified as a hydric soil on the Jefferson COWlty Area Hydric Soil list
(January 1991).
Data point # 1 was dug slightly upslope from the stream. Soils did not indicate regular
inWldation; soil colors were dark brown (lOYR 3/3. no monIes). At Data Point ;;2. closer
to the stream and north west of Data Point # 1. soils were much darker in hue and had
streaked mottles indicating the presence of a regular and rising water table ( IOYR 4/3 and
IONR 3/2 with mottles). The soils at this location were very sandy as opposed to the
loamy and powdery soils fOWld in the upland areas. Several other soil test pits were dug
on the parcel, especially in the western boWldary where the understory appeared to
contain more wetland tolerant vegetation (salmonberry). Soils only showed signs of
regular standing water near the stream.
Vegetation
The plant community along the stream channel (northern edge of the parcel) contains well
over 80% wetland-tolerant vegetation. Species diversity is very high on the parcel and
several of the alders within the wetland are very large, measuring up to 8.5" DBH. The
majority of the vegetation consists of native species. Vegetation that requires regular
inWldation was identified on the western boundary along Argyle Lane consisting of
horsetail and water parsley. These species were mostly confined to the outlet of the
stream and along the ditch. The majority of Lot 15 consists of water tolerant trees
(Facultative) including cedar. spruce. and alder. but the understory vegetation is not
tolerant to the presence of standing water. Species in the understory consist mostly of
ferns, Oregon grape, elderberry, and thimbleberry.
Harrington Wetland Delineation
Repon File Number 2003-02464
4
Olympic Wetland Resources. Inc. 11 03
Below is the list of vegetation identified on the subject parcel. including the assigned
indicator status for each species.
Scientific Name
Wetland Plants
Common Name Status Layer
4cer circinarum
4/nus rubro
..4rJnrium /ix- emina
/l1'o'ronia /anceo/ara var./anc
iserum arvense
Maianrhemum di/aratum
Oenanrhe sarmenJosa
lPicea sirchensis
!Rhamnus purshiana
!Rubus s crabi/is
T olmiea men=eisii
Thu'o /icara
Uririca dioica
IVine
Ie
Tree
Tree
Shrub
Herb
Tree
Herb
IAlder
ILad\' fern
is rin2beaut\'
IC ommon horsetail
IF alse lil\' of the valle\"
IWater-parsley
ISitka spruce
Ie ascara
ISalmonberr\'
IPig~-back lam
, :Western red cedar
IStinci.nl! nettle
Upland Plants
[4cer macro In'//um
IBig-leaf Ie
[Dull Oregon
ISword fern
:Thimbleberr\'
iT railing blackbem'
!Elderberr\'
Trillium
!Hemlock
,
iRed huckleberry
Tree
Tree
Shrub
Hydrology
Water needs to be present only 20 days of the growing season for an area to qualify as a
wetland. The growing season is defmed by the Jefferson County soil survey as March 12
to November 25. Hydrology must be present for 12.5% (20 days) of these 258 days. The
growing season is also defined by soil temperature at 19.7 inches below the soil surface
being higher than biological 0 (5oe or 40F). The temperature of the soil during the
November 18 delineation was 47.5 degrees and therefore verifies that the delineation is
during growing season.
Hydrology was present in the soil test pit near the stream (Data Point #2). The stream
ranges from 2 to 3 feet wide and approximately 5 inches deep. It appears to flow year-
Harrington Wetland Delineation
Repon File Number 2003-02.uH
5
Olympic Wetland Resources. Inc. 11 03
round. During the initial assessment of this parcel in July 1003 water was flowing in the
stream. This was during an exceptionally dry year following 3 years of below normal
rainfall. The stream eventually flows to an open ditch along Argyle Lane. and under
Cameron Street via a culvert.
Classification of Wetlands
This wetland has been rated according to the DOE rating system and classifies as a Class
II (11 points) wetland with 100- foot buffers. The wetland is small. less than 1 acre. but
has high structural diversity (dense tree, shrub, and herbaceous layers). and high plant
diversity in all layers. However. existing buffers are altered in by nearby developments.
roads, and the adjacent golf courses.
All buffers are measured perpendicular from the delineated edge (Jefferson County
Unified Development Code, Jan. L 1001, 3-30 Buffers Table 3-4). The majority of the
wetland falls outside the subject parceL however associated buffers restrict any
development projects on this parcel.
Summary
This report presents findings from the wetland delineation conducted November 18.
1003, on parcel #995-600-015 (Lot 15) west of the 7m hole at Port Ludlow Golf Course.
The Jefferson County Critical Areas Map indicates that the entire parcel is within a
wetland. Findings reveal a smalL Class II wetland with and associated year-round stream
located on the northern boundary of the lot. The majority of the wetland is off-site and to
the north (Lot 14) but the 100- foot buffers associated with this Class II wetland will
restrict development projects associated with this parcel.
The final authority over this wetland determination rests with the governmental agencies:
restriction will apply to any development near the wetlands or buffers associated with this
parcel. A variance will be required to develop this parcel. If there are further questions
or planning requirements for this project please do not hesitate to call.
Dixie Llewellin
Principal Biologist, Olympic Wetland Resources. Inc.
Certified for Wetland Delineation. 1987 Manual.
Wetland Training Institute. June 1995.
Harrington Wetland Delineation
Repon File Number 2003-02464
6
Olympic Wetland Resources. Inc. 11 03
References
Buckingham, et aI., 1995. Flora of the Olympic Peninsula. Northwest Interpretive Association
and the Washington Native Plant Society, Seattle. Wash.
Cooke. Sarah Spear, 1997. A Field Guide to the Common Wetland Plants of Western
Washington and Northwest Oregon. Seattle Audubon Society, Seattle. Wash.
Cowardin, L.M.V. Carter, F.C.Goblet. and E.T. LaRoe. 1979. Classification of Wetland and
Deep Water Habitats ofthe U.S. U. S. Fish and Wildlife Service, Washington, D.C.
Hitchcock and Conquest. 1973. Flora of the Pacific Northwest.
Federal Interagency Committee for Wetland Delineation, 1987. Federal Manual for Identifying
and Delineating Jurisdictional Wetlands. July 1994 update. 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.
Jefferson County Unified Development Code. January 2001.
Leonard., William P., 1993. Amphibians of Washington and Oregon. Seattle Audubon Series.
MacBeth. Div. of Kollmorgen Instruments Corp.. 1992. Munsell Soil Color Charts.
Mitsch and Gosselink, 1993. Wetlands.
Pojar. Mackinnon, 1994. Plants of the Pacific Northwest Coast.
Reed., Porter. 1988. National List of Plant Species That Occur in Wetlands, Region 9. 1993
update.
Washington State Wetland Department of Ecology. March 1997. Washington State Wetland
Identification and Delineation Manual. #96-94.
u.S. Department of Agriculture. 1994. Keys to Soil Taxonomy. Pocahontas Press.
u.S. Department of Agriculture. Soil Conservation Service. 1975. Soil Survey of Jefferson
County.
Appendix
Sheet # 1
Sheet #2
Location Map and Soil Survey Of Jefferson County, Washington
Findings Map
Wetlands Rating Field Data Form
Data Forms, Routine Determination W A State Wetland Delineation Manual
Appendix
Sheet # 1
Sheet #2
Location Map and Soil Survey Of Jefferson County, Washington
Findings Map
Wetlands Rating Field Data Form
Data Fonns, Routine Determination W A State Wetland Delineation Manual
TdIe:
Location and Soil Map
Parcel #99&-600-015
Scole:
Sheet
Olympic WetIoml ResoUKes, lot
856 50th Street
Port Townsend, WA 98368
360 385-6432
Client:
Bob Harrington
6761 38th Ave SW
Seattle, WA 98126
November 2003
#1
Job #: 2003-02464
TNt !.MN
V 19"
Subject Property
Jefferson County Soil Survey Map
Jefferson Courdy, Washington
1975
Soil Survey Page SS
AlC Alderwood gravelly loamy sand
010 Olete-Alderwood complex
Bk Belfast Silt Loam, Wet Variant
Findings Map SIDle: Sheet
,;; rifle: As Indicated
Olympic Wetland Resources, Int Parcel #995-600-015
November 2003 #2
856 50th Street
Port Townsend, WA 98368 (Iienf : Bob Harrington
360 385-6432 6761 38th Ave SW Job#: 2003-02464
Seattle, WA 98126
~
~
t
~
<D
-~
5
<6
~
o
o
Lot 16
I
,f,
r
t.
.
Lot 14
Delineated Wetland Edge
100' Buffer From Wetland Edge
o Flagged delineation markers
. Data Points
All wetland locations
and sizes are approximate,
to establish exact points
a formal survey is required
/'
Wetlands Rating Field Data Form
Background Information:
OL4{Y1P,L II /7/\ {",..,
Name of Rater: .D- LLIWElU,,\ Affiliation: WE'I'""1IWfJ ~liJZ.J..J::5Dare: ~
Name of wetland (if known): loT (') 50Uht 15A., I mlZ--l l1JOUJv.. )
GovemmentJurisdictionofwetland: ~le.S~ Cl:U\..i1'1, CDfUJS ~:=-E}..(~(~
Location: 1/4 Section: of 1/4 S: Section: 7d..- Township: 25? Range: (c \.J..I0\.
Sources of Information: (Check all sources that apply)
Sire visit: ~ USGS Topo Map: >( NWI map: L Aerial Photo: L Soils survey: X-
Other: ~ Describe: 'Jl=~w- Co CrunLItL Arzi::Jrs (}JftP
When The Field Data form is complete elller Category bete: [D .:2.2.... :PD~"'D
Q.1. High Quality Natural Wetland Circle Answers
Answer this question if you have adequate information or experience to do so.
If not find someone with the expertise to answer the questions. 'Then, if the
answer to questions la, lb and lc are all NO, contact the Natural Heritage
program 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.
laI. Upstream watershed> 12% impervious.
1a2. Wetland is ditched and water flow is not obstructed.
la3. Wetland has been'graded,filled,logged.
la4. Water in wetland is controlled by dikes, weirs, etc.
laS. Wetland is grazed.
la6. Other indicators of disturbance Oist below)
(--:; DC-I- rDd1Q.~ ~ NEill {Xb~ 'ttV U5-o
~go to Q.2
~: go to Q.2
Yes: go to Q.2
Yes: go to Q.2
Yes: go to Q.2
Yes: go to Q.2
No: go to lb.
25
1 b Are there populations of non-native plants which are currently present,
cover more than 10% of the wetland, and appear to be invading native
populations? Briefly describe any non-native plant populations and
Information source(s):
Ic. Is there evidence of human-caused disturbances which have visibly
degraded water quality. Evidence of the degradation of water quality
include: direct (untreated) runoff from roads or parking lots; presence,
or historic evidence, of waste dumps; oily sheens; the smell of organic
chemicals; or lifestock use. Briefly describe:
C.2. Irreplaceable Ecological Functions:
Does the wetland:
6) have at least 1/4 acre of organic soils deeper than 16 inches
and the wetland is relatively undisturbed; OR
[lIt 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
6) have a forested class greater than 1 acre;
OR
6) have characteristics of an estuarine system;
OR
6) have eel grass, floating or non-floating kelp beds?
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 1O%? .
Is the area of sphagnum mosses and deep organic soils> In acre?
Is the area of sphagnum mosses and deep organic soils 1/4-1/2 acre?
2a2. Is there an area of organic soil which has an emergent class with at least
one species from Table 2, and cover of invasive species is < 10% (see Table 3):
Is the area of herbaceous plants and deep organic soils> 1/2 acre?
Is the area of herbaceous plants and deep organic soils 1/4-1/2 acre?
26
YEs: go to Q.2
No: go to Ic.
YES: go to Q.2
NO: Possible Cat I
contact DNR
@.QJo all: go to Q.3)
YES go to 2a
YEs: Go to 2b
YES: Go to 2c
YES: Go to 2d
YES: Category I
YES: Category II
NO: Go to 2a3
YES: Category I
YES: Category II
NO: Go to 2a3
1 b Are there populations of non-native plants which are currently present,
cover more than 10% of the wetland, and appear to be invading native
populations? Briefly describe any non-native plant populations and
Information source(s):
Ic. Is there evidence of human-caused disturbances which have visibly
degraded water quality. Evidence of the degradation of water quality
include: direct (untreated) runoff from roads or parking lots; presence,
or historic evidence, of waste dumps; oily sheens; the smell of organic
chemicals; or lifestock use. Briefly describe:
Q.2. Irreplaceable Ecological Functions:
Does the wetland:
6> have at least 1/4 acre or"organic soils deeper than 16 inches
and the wetland is relatively undisturbed; OR
[lIt 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
6> have a forested class greater than 1 acre;
OR
6> have characteristics of an estuarine system;
OR
6> have eel grass, floating or non-floating kelp beds?
2a. Bogs and Fens
Are any of the three following conditions met for the area of organic soil?
2a.I. Are Sphagnum mosses a common ground cover (>30%) and the
cover of invasive species (see Table 3) is less than 10%1 .
Is the area of sphagnum mosses and deep organic soils> Ifl acre?
Is the area of sphagnum mosses and deep organic soils 1/4-1/2 acre?
2a.2. Is there an area of organic soil which has an emergent class with at least
one species from Table 2, and cover of invasive species is < 10% (see Table 3):
Is the area of herbaceous plants and deep organic soils> Ifl acre?
Is the area of herbaceous plants and deep organic soils 1/4-112 acre?
26
YES: go to Q.2
No: go to Ic.
YES: go to Q.2
NO: Possible Cat. I
contact DNR
@QJo all: go to Q.3)
YES go to 2a
YES: Go to 2b
YES: Go to 2c
YES: Go to 2d
YES: Category I
YES: Category II
NO: Go to 2a.3
YES: Category I
YES: Category II
NO: Go to 2a.3
2a3. Is the vegetation a mixture of only herbaceous plants and Sphagnum
mosses with no scrub/shrub or forested classes?
Is the area of herbaceous plants, Sphagnum, and deep organic
soils> 1/2 acre?
Is the area of herbaceous plants, Sphagnum, and deep organic
soils 1/4-1/2 acre?
Q.2b. Mature forested wetland.
2b.l. Does 50% of the cover of upper forest canopy consist of evergreen
trees older than 80 years or deciduous trees older than 50 years?
Note: 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
than 50 years, AND is the structural diversity of the forest high as
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
the shrub layer consist of invasive/exotic plant species from the list on p. 19?
Q.2c. Estuarine wetlands.
2cI. Is the wetland listed as National Wildlife Refuge, National Park,
National Estuary Reserve, Natural Area Preserve, State Park, or
Educational. Environmental or Scientific Reserves designated under
WAC 332-30-151?....
2c.2. Is the wetland> 5 acres; . . . . . . . . . . . . . . . . . . .. ........
Note: If 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.
or is the wetland 1-5 acres; . . . . . . . . . . . . . . . . . . . . . .
or is the wetland < I acre? . . . . . . . . . . . . . . . . . . . . . .
YES: Category I
YES: Category n
NO: Go to Q.3.
YES: Category I
NO: Go to 2b.2
YES: Got02b.3
NO: Go to Q.3
YES: Category I
NO: Go to Q.3
YES: Category I
NO: Go to 2c.2
YES: Category I
YES: Go to 2c.3
YES: Go to 2c.4
27
2c.3. Does the wetland meet at least 3 of the following 4 criteria: .. ......
- 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' buffer of ungrazed pasture,
open water, shrub or forest;
- has at least 3 of the following features: low marsh; high marsh; tidal
channels; lagoon(s);woody debris; or contiguous freshwater wetland
2cA. Does the wetland meet all of the four criteria under 2c3. (above)?.
Q.2d. Eel Grass and Kelp Beds.
2d.1. Are eel grass beds present? . . . . . . . . . . . . . . . . . . .
2d.2. Are there floating or non-floating kelp bed(s) present with greater than
50% macro algal cover in the month of August or September? . . .. .....
Q.3. Category IV wetlands.
3a Is the wetland: less than 1 acre and,
hydrologically isolated ana,
comprised of one vegetated class that is dominated (> 80% areal cover)
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 of
species from Table 3 (page 19)
3c. Is the wetland excavated from upland and a pond smaller than 1 acre
without a surface water connection to streams, lakes, rivers, or other
wetland, and has < 0.1 acre of vegetation.
28
YES: Category I
NO: Category II
YES: Category II
NO: Category ill
YES: Category I
NO: go to 2d.2
YES: Category I
NO: Category II
YES: Category IV
NO: go to 3b
YES: Category IV
NO: go to 3c
YES: Category IV
NO: go to Q.4
2c.3. Does the wetland meet at least 3 of the following 4 criteria: .. ...... YES: Category I
NO: Category II
_ 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' buffer of un grazed pasture,
open water, shrub or forest;
_ has at least 3 of the following features: low marsh; high marsh; tidal
channels; lagoon(s);woody debris; or contiguouS freshwater wetland
2cA. Does the wetland meet all of the four criteria under 2c3. (above)?. YES: Category n
NO: Category ill
Q.2d. Eel Grass and Kelp Beds.
2d.1. 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 n
Q.3. Category IV wetlands.
3a. Is the wetland: less than 1 acre allil.
hydrologically isolated and,
comprised of one vegetated class that is dominated (> 80% areal cover) YES: Category IV
by one species from Table 3 (page 19) or Table 4 (page 20 ) NO: go to 3b
3b. Is the wetland: less than two acres
and, hydrologically isolated, .
with one vegetated class, and > 90% of areal cover is any combination of YES: Category IV
species from Table 3 (page 19) NO: go to 3c
3c. Is the wetland excavated from upland and a pond smaller than 1 acre YES: Category IV
without a surface water connection to streams. lakes, rivers. or other NO: go to Q.4
wetland, and has < 0.1 acre of vegetation.
28
Q.4. Significant habitat value.
Answer all questions and enter data requested.
4a. Total wetland area
Estimate area, select from choices in the near-right column, and score in the
far column:
Enter acreage of wetland here:~acres, and source: r:x:l~u Lft(L
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,
(~merge~ if the area of emergent class is > 1/4 acre,
~b-Shrub if the area of scrub-shrub class is > 1/4 acre,
-
~resu;!) if area of forested class is > 1/4 acre,
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 water, 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
4b above, count the number of different plant species
you can find that cover more than 5% of the ground.
You do not have to name them.
am
IAquatic Bed
Score in column at far right:
e.g. If a wetland has an aquatic bed class with 3 species, Emergent
an emergent class with 4 species and a scrub-shrub
class with 2 species you would circle 2, 2, and 1 in the
far column.
Note: Any plant species with a cover of> 5%
qualifies for points within a class, even those Scrub-Shrub
that are not of that class.
Forested
Circle scores that qualify
~
>200
40-200
10-40
5 -10
1 - 5
0.1 - 1
<0.1
~
6
5
4
3
2
(i2
o
# of classes ew.nts
1.......0
2.......3
@.....6
4.......8
5...... .10
# species in class
1
2
3
>3
I
2-3
@
>5
1
~
>4
1
2
c9
>4
(p
ew.nts
o
1
2
3
o
1
2
3
z.
o
1
2
3
z.
o
1
2
3
-z.
29
\)
4d. Structural diversity,
If the wetland has a forested class, add 1 point if each of the following
classes is present within the forested class and is larl!er than 1/4 acre:
-trees> 50' tall . . . . . . . . . . . . . . . . . . . . .
-trees 20'- 49' tall . . . . . . . . . . . . . . . . . . .
-shrubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-herbaceous ground cover. . . . . . . . . . . . .
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).
4e. Decide from the diagrams below whether interspersion between
wetland classes is high, moderate, low or none? If you think the
amount of interspersion falls in between the diagrams score accordingly
(Le. a moderately high amount of insterspersion would score a 4,
while a moderately low amount would score a 2)
none
low
moderate
moderate
4f. Habitat features.
Answer questions below, circle features that apply, and score to right:
Is there evidence that the open or standing water was caused by beavers
Is a heron rookery located within 300'?
Are raptor.nest/s -located within 3oo'?
Are there at least 3 standing dead trees (snags) per acre greater than
10" in diameter at "breast height" (DBH)?
Are there at least 3 downed logs per acre with a diameter
> 6" for at least 10' in length?
Are there areas (vegetated or unvegetated) within the wetland that are
ponded for at least 4 months out of the year, and the wetland has not
qualified as having an open water class in Question 4b. ?
30
~
C;~
YES - 1
<1-
High - 5
Moderate - 3
~~
None - 0
low
high
YES = 2
YES= 1
YES= 1
YES= 1
YES= 1
YES = 2
s
4d. Structural diversity.
If the wetland has a forested class, add I point if each of the following
classes is present within the forested class and is larger than 1/4 acre:
-trees> 50' tall . . . . . . . . . . . . . . . . . . . . .
-trees 20'- 49' tall . . . . . . . . . . . . . . . . . . .
-shrubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-herbaceous ground cover. . . . . . . . . . . . .
Also add I 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).
4e. Decide from the diagrams below whether interspersion between
wetland classes is high, moderate, low or none? If you think. the
amount of interspersion falls in between the diagrams score accordingly
(Le. a moderately high amount of insterspersion would score a 4,
while a moderately low amount would score a 2)
none
low
moderate
moderate
4f. Habitat features.
Answer questions below, circle features that apply, and score to right:
Is there evidence that the open or standing water was caused by beavers
Is a heron rookery located within 300'?
Are raptor.nest/s-located within 300'?
Are there at least 3 standing dead trees (snags) per acre greater than
10" in diameter at "breast height" (DBH)?
Are there at least 3 downed logs per acre with a diameter
> 6" for at least 10' in length?
Are there areas (vegetated or unvegetated) within the wetland that are
ponded for at least 4 months out of the year, and the wetland has not
qualified as having an open water class in Question 4b. ?
30
~.1)
~
YES-I
<1
High - 5
Moderate - 3
<!OW=!::)
None - 0
low
high
YES = 2
YES= I
YES= I
YES= I
YES= I
YES = 2
s
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 swface 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.
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.
If the condition of the buffers do not exactly match the description, score either a
point higher or lower depending on whether the buffers are less or more degraded.
Forest. scrub, native grassland or open water buffers are present for
more than 100'around 95% of the circumference. Score = 5
Forest. scrub, native grassland, or open water buffers wider than 100'
for more than In of the wetland circumference, or a forest, scrub,
grasslands, or open water buffers for more than 50' around 95% of the
circumference. Score = 3
Forest, scrub, native grassland, or open water buffers wider than 100'
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 ~r~V
wetland circumference.
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 areas within 50' of the wetland for more than
In 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
1-
"'-
&
4i. Connection to other habitat areas:
Select the description which best matches the site being evaluated.
-Is the wetland connected to, or part of, a riparian corridor at least 100' wide
connecting two or more wetlands; or, is there an upland connection present> 100'
wide with good forest or shrub cover (>25% cover) connecting it with a
Significant Habitat Area?
- Is the wetland connected to any other Habitat Area with either I) a forested/shrub
corridor < 100' wide, or 2) a a corridor that is> lOO'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?
-Is the wetland COnnected to any other Habitat Area with narrow corridor (<100')
of low vegetation (< 6' in height)?
- 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 21acre, or industrial)?
---">..
......
YES =5
YES=3
YES = 3
YES = I
Now add the scores circled (for Q.5a - Q.5i above) to get a tota?v; ZZ-- .;II-:,
Is the Total greater than or equal to 22 points? S _ r~t~o
NO = Category III
~
7.---')
5-
t..-?./
32
?
/-.-C)
5-
-z.-v
4i. Connection to other habitat areas:
Select the description which best matches the site being evaluated.
-Is the wetland connected to, or part of, a riparian corridor at least 100' wide
connecting two or more wetlands; or, is there an upland connection present> I 00'
wide with gOOd forest or shrub cover (>25% cover) connecting it with a
Significant Habitat Area?
- Is the wetland connected to any other Habitat Area with either I) a forestedlsluub
corridor < 100' wide, or 2) a a corridor that is > lOO'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/sluub or forest COver connection to other wetlands? .
- Is the wetland connected to any other Habitat Area with narrow corridor (<100')
oflow vegetation (< 6' in height)?
-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 =5
YES=3
YES=3
YES = I
Now add the scores circled (for Q.5a - Q.51 above) to get a t~ Z 2..- .;If:,
Is the Total greater than or equal to 22 points? ~" _ C'!lIt~o
NO = Category III
32
DA T A FORM I (Revised)
Routine Wetland Detennination
(W A State Wetland Delineation Manual or
1987 Co s Wetland Delineation Manual)
ProjecflSite: ~1, tf q q '5 - "00 - O{ C;
Applicant/owner: BGB ttAl.e.~/\UffDN
'Investi ato s: . Ll8JJ U "-I
Do Normal Circumstances exist on the site?
Is the site significantly disturbed (atypical situation)?
Is the area a potential Problem Area?
Ex lanation of a ical or oblem area:
VEGETATION (For strata, indicate T = tree; S = shrub; H = herb; V = vine)
Dominant Plant S ies
W>
yes
yes
no
dP
~
Stratum % cover Indicator Dominant Plant S ies
lLIr
HYDROPIIYTIC VEGETATION INDICATORS:
% of dominants OBL. FACW, & FAC 4v %
Check all indicators that apply & explain below:
Visual observation of plant species growing in
areas of prolonged inundation/saturation
Morphological adaptations
Tochnicalliterature
Hydropbytic'Vegetation present? yes ~
Rationale for decisionlRemarks:
HYDROLOGY'
Is it the growing season? @ no
. 50 I
Based on: 47. soil temp (record temp'
other ex lain)
Dept of inundation: N.D inches
Depth to free water in pit IVClN? inches
De th to saturated soil: AJ0/IE. inches
Check all that apply & explain below:
Stream. Lake or gage data:
Aerial hotoara hs:
Wetland hYdrology present?
Rationale for decisionlRemarks:
Date: It \6 0')
County: ~-rrez ~
State: wA
SfffR: 5
Community ID:
Transect ill:
Plot ill: 'P/'frfrPoINT 4F I
Stratum % cover
Indicator
PhysiologicaVceproductive adaptations'
Wetland plant database
Personal knowledge of regional plant communities
Other (ex lain)
~
Water Marks: yes no
on
Drift Lines:
yes no
OxidizCd Root (live roots)
Channels < 12 in. es no
FAC Neutral: yes no
Other (explain):
Other:
yes
@
Sediment Deposits: yes no
Drainage Patterns: yes no
Local Soil Survey: yes no
Water-stained Leaves yes no
. SOILS
Map Unit Name ALL ALtJt:1lf,))j))w
(Series & Phase)
Drainage Class
( tie - (
) DvfSTf:1(. EN-TIc PUeoCft~
Field observations confirm ~ No
ma d ?
Profile Description
Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil
(inches) (Munsell (Munsell size & contrast structure, etc: profile
moist) moist) (match descriPtion)
D-f ~ff
L-.--...
4-1 k7 IOYJf-3l LIJ'W'-S/fJ 0 {CJ"IIt.
f ';5
~
Hydric Soil Indicators: (check all that apply)
_ Histosol - Matrix chroma ::; 2 with mottles
_ Histic Epipedon _ Mg or Fe Concretions
_ Sulfidic Odor _ High Organic Content in Swface Layer of Sandy Soils
_ Aquic Moisture Regime _ Organic Streaking in Sandy Soils
_ Reducing Conditions _ Listed on NationallLocal Hydric Soils List
- Gleyed or Low-Chroma (=1) matrix Other (explain in remarks)
Hydric soils present? yes ~
Rationale for decisionlRemarks:
Wetland Determination (circle)
Hydrophytic vegetation present? yes ~
Hydric soils present? yes .WQ) Is the sampling point yes <@L
Wetland hYdrolo~ present? yes ~ within a wetland?
RationalelRemarks:
'\IOTES:
'~f~
~
Revised 4/97
, SOILS
i Map Unit Name ALL A~w
i (Series & Phase)
!
i Taxonom ) Dt1STeJL ENTlC PUeDCft~
Drainage Class
(tle-(
Field observations confirm ~ No
d ?
I Profile Description
i Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil
I (inches) (Munsell (Munsell size & contrast structure, etc: profile
, moist) moist) (match descriDtionl
D-I}- '?tff
--<--- I-
q-lk7 I 0 Y/f..3l Lf:/l'Yl-!;trV () (C)'1'?...
, 51)
-
Hydric Soil Indicators: (check all that apply)
_ Histosol _ Matrix chroma ~ 2 with mottles
_ Histic Epipedon _ Mg or Fe,Concretions
_ Sulfidic Odor - High Organic Content in ,Surface Layer of Sandy Soils
- Aquic Moisture Regime _ Organic StreaIcing in Sandy Soils
- Reducing Conditions _ Listed on NationallLocal Hydric Soils List
- Gleyed or Low-Chroma (=1) matrix Other (explain in remarks)
Hydric soils present? yes ~
Rationale for decisionlRemarks:
Wetland Determination (circle)
Hydrophytic vegetation present? yes ~
Hydric soils present? yes fii{;> Is the sampling point yes <@L
Wetland hYdrOlogy present? yes ~ within a wetland?
RationaleIRemarks: ,
"JOTES:
~'~)
../
. ,/..;t~
Re\ised 4/97
DA T A FORM 1 (Revised)
Routine Wetland Determination
(W A State Wetland Delineation Manual or
1987 Co Wetland Delineation Manual)
Project/Site: Tha-.l8'1--:# 4'1')- 60)- DIC)
Applicant/owner: 13:06 tT/'J R./!JN-0J~
no
.@
~
Date: /I I~ 03
County: Jl:::''Yfa2SbN
State: VVA
srrlR: 52-I T2<;3 R-1E. W.n1
Community ID:
Transect ID:
Plot ID:MlI1 ffyNT it z..
Dominant Plant S ies Stratum % cover Indicator Dominant Plant S ies Stratum % cover Indicator
-r !X) , c
I 4D Pi CU
-r /D me
5. rVD
JilJD
HYDROPHYTIC VEGETATION INDICATORS:
% of dominants OBI.. FACW, & PAC Bo %
Check all indicators that apply & explain below:
Visual observation of plant species growing in
areas of prolonged inundation/saturation -L
Morphological adaptations
Technical Literature
Hydropbytic'Vegetation present? y DO
Rationale for decisionlRemarks:
PhysiologicaJ[reproducti ve adaptations .
Wetland plant database
Personal knowledge of regional plant communities
Other (ex lain)
-L-
-L
--A-
::.:
HYDROLOGY'
Is it the growing season? ~ no
. , -0
Based on: '" soil temp (record temp' t7. ') )
other ex lain)
Dept of inundation: N _ inches
Depth to free water iri pit .4 oyVt; inches
De th to saturated soil: ~~ - inches
Check all that apply & explain below:
Stream, Lake or gage data:
Aerial hotoara hs:
Wetland hydrology present?
Rationale for decisionlRemarks:
Other:
yes
Water Marks: yes no
on
Drift Lines:
yes no
OxidiUd Root (live roots)
Channels <12 in. es no
PAC Neutral: yes no
Other (explain):
no
Sediment Deposits: yes no
Drainage Patterns: yes no
Loca1 Soil Survey: yes no
Water-stained Leaves yes no
SOILS
. Map Unit Name I\t.L ALvt:1L!:,QtM
I
; (Series & Phase)
,
Drainage Class
I VQ-/
) D~S [t'Llc EN Tic Dueoctt(lU:TO
Field observations confirm
ma d ?
Yes
~
Profile Description
Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil
(inches) (Munsell (Munsell size & contrast structure, etc~ profile
moist) moist) (match descriotion)
()-') /0(((.1/ ) 5/rNt/1 U>/lW\ I01t2-
( (DYrz 1 ~ STUJt(~ S A1J. ,J~1 .:4/3
")"-1 ~ rOff 5/2- ~
) I iJ'{(L \
3/2 \
w
(Yt ~7lk\
~
Hydric Soil Indicators: (check all that apply) ~ Matrix chroma ~ 2 with mottles
_ Histosol
_ Histic Epipedon _ Mg or Fe Concretions
_ Sulfidic Odor _ High Organic Content in Swface Layer of Sandy Soils
_ Aquic Moisture Regime _ Organic Streaking in Sandy Soils
_ Reducing Conditions _ Listed on National1Local Hydric Soils List
- ::::L.... Gleyed or Low-Chroma (=1) matrix Other (explain in remarks)
Hydric soils present? .f!:j) no
Rationale for decision/Remarks:
u
Wetland Determination (circle)
Hydrophytic vegetation present? 5f) no ~
Hydric soils present? ~ no Is the sampling point no
Wetland hydrolo~ present? ~ no within a wetland?
RationalelRemarks:
Revised 4/97
SOILS
: Map Unit Name I'v..L ALVt::fU.,()(JJ()
I .
i (Senes & Phase)
I
Drainage Class
( YO -I
) D1S rrl-i C I:::J-J. Tl ~ D u eocHJZU1'O
Field observations confirm
?
Yes Q
~
I Profile Description
I Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil
I (inches) (Munsell (Munsell size & contrast structure, etc; profile
I moist) moist) (match description)
()-') /UfR-1J) 5/h"itJ"'l L-<YJw\ 10112-
1., (DYe. 1~ 5JU3l'r(~ Sh-l (J'''J .:4/3
'j-Ilr- lort 12- ~I-
~ ( i)-112- \
(J2 \
(Yl ~fl,1::\
-
Hydric Soil Indicators: (check all that apply) ~ Matrix chroma ~ 2 with mottles
_ Histosol
_ Histic Epipedon _ Mg or Fe Concretions
_ Sulfidic Odor _ High Organic Content in Surface Layer of Sandy Soils
_ Aquic Moisture Regime _ Organic Streaking in Sandy Soils
_ Reducing Conditions _ Listed on NationallLocaI Hydric Soils List
_.:::L Gleyed or Low-Chroma (=1) matrix Other (explain in remarks)
Hydric soils present? . f:j) no
Rationale for decisionlRemarks:
"
Wetland Determination (circle)
Hydrophytic vegetation present? ~ no ~
Hydric soils present? ~ no Is the sampling point no
Wetland hYdrology present? ~ no within a wetland?
Rationale1Remarks:
Rc\;sed 4/97
~
.......~.
Bob Harrington
Buffer Reduction Plan
Parcel # 995-600-015
January 2004
Contents
Introduction
Jefferson County Unified Development Code
. Wetland Buffer Definition '
Standard Buffer Requirements
Reducing Buffer Widths
Buffer Reduction Plan
Revegetation Requirements
Stormwater Control
Summary
Sheet #1 Potential Building Envelope and Findings Map
E'd ~80:TT VO vO ~~w
~
"'-0.1:.
Bob Harrington
Buffer Reduction Plan
Parcel # 995-600-015
January 2004
Introduction
A wetland delineation conducted on November 2003 identified a stream with an a,ssociated Class
II wetland on the subject parcel (Lot 15). The stream and the associated wetland are located on
the northern boundary the lot and the remainder of/the lot falls within the associated 100- foot
butler. The purpose of this report is to define options for potential building envelopes to allow
development on this parceL In order to accommodate a feasible building site. this project will
require the reduction of the standard 100-foot buffer by more than the allowable 25% (see 3.6.9
(6) below: Primary goals are to define a building area with the least degradation or impacts to
the wetland and buffers.
Jefferson County Unified Development Code (January 2001)
Section 3.6.9 (2) Wetland Buffer Definition:
A designaled area adjacent to a wetland thai protecls, and is inlegral to the H:'erland
ecosystem. Buffers provide shading, inpul of organic debris, and coarse sediment, room
for variation in the Slream or wetland boundaries, habitat to wildlfre, and protection fi"om
harmful intrusion necessary 10 protect the publicfrom losses suffered when the junctions
and values of aquatic resources are degraded.
3.6.9 (5 iii) Standard Buffer Requirements
Buffers shall remain naturally vegelaled except where the vegetation has been disturbed,
invaded by highly undesirable species, or would substantially benefitfor the increased
diversity of introduced (native) species. Where btiffer disturbance has occurred during
construction replanting ....ilh native vegetation shall be required,. }.linor priming of
vegetation to enhance views and removal of undesirable species (e.g. alders) may be
permitted by the Director on a case-by-case basis.
3,6.9 (6) Reducing Buffer Widths:
The Administrator may reduce the standard wetland buffer width, when the project
applicant demonstrates both of the fo llowing to the satisfaction of the Adminislrator:
i. Standard wetland buffer width averaging as set forth in this section is
unfeasible.
Harrington Buffer Reduction Plan
January 2004
1
Olympic Wetland Resources, Inc
v.d
eSO:ll VO vO ~ew
:~.~~
ii.
The project application includes a buffer enhancement plan using native
vegetation. which substantiates that an enhanced buffer will improve the
functional attributes a/the buffer to provide additional protection/or the
functions and values.
Buffer Reduction Plan
Buffer reduction will be applied to alIow the applicant to build a single-family residence within
Lot 15. The property is within an established residential neighborhood. Houses lie to the south
and across the street (Argyle Lane and Cameron Drive) and the Port Ludlow Golf Course defines
the eastern boundary. Adjacent property to the north is undeveloped.
Neighboring houses. range from 1700 square feet to 2600 square feet (not including garages
which average an additional 500 square feet). Due to the limitations of this' building lot and to
minimizing the size of the footprint it is recommended that a two-story ~tructure be designed.
The wetland and associated stream are contained on the northern boundary Qfthe property. The
building envelope and driveways should therefore be restricted to the southern edge of the
property to minimize buffer impacts.
Buffer reduction required for a house site would be from 50% to 75%. A driveway should be
sited near the southern property boundary as far from the wetland a possible. The driveway,
calculated at 12 feet wide would remain within the 25% buffer reduction area. Please refer to the
enclosed map (Potential Building Envelope).
P'resently this site consists of a high diversity (22 species) of mature native vegetation. Goals
should include the least possible impacts to the site as possible. The building envelope should be
clearly marked to minimize vegetation removal while clearing for a building site within the
buffer. Vegetation should only be removed in the area specifically required for the building
footprint and driveway.
Revegetation Requirements
Any building permits applications associated with this parcel should be accompanied with a
revegetation plan to re-establish native species. The revegetation plan should be designed to re-
vegetate areas that were disturbed during the building process. TIle revegetation plan should
include consist of native trees and shrubs.
Stormwater Control
All storm water from the project will be'directed away from the wetland. Sediment or runoff
from the project should be minimized with the use of straw bales or sediment fences. This will
be required during the entire building process and will continue to be required until the
vegetation becomes established andean act as a natural filter.
Harrington Buffer Reduction Plan
January 2004
2
Olympic Wetland Resources, Inc
S.d
~80:11 VO vO ~~w
~
.....~.
Summary
The subject parcel (Lot 15) owned by Bob Harrington is completely within buffer boundaries of
a Class II wetland. Buffer reduction is necessary to establish a building envelope on the site.
The wetland is associated with a drainage easement and is located on the northern boundary. All
building should be designed on the southern edge ofthe property for minimum impact within the
buffer. A revegetation plan should accompany any building permits associated with this parcel.
Final determination of buffer reduction and building site approval will be determined by the
Jefferson County Department of Community Development planning department. If there are any
further questions please fe({l free to calL
Dixie Llewellin, Principal Biologist
Olympic Wetland Resources, Tnc.
Certified for Wetland Delineation, 1987 Corps of Engineer Manual
Wetland Training Institute, June 1995
Harrington Buffer Reduction Plan
January 2004
3
Olympic Wetland Resources, Inc
Sod
@80:11 VO vO .J@W
I
,~
\~
,."
,~
~
r'
"
\
~ .l
, t
~ ~ I:'"
k : I ~::
~ . I ~::;
"4 .,):
~
,
~~
~
H~ ~ I
j ~ f [I
. ~la~ ~~
fHU iii
~ ; ~'~ ;;1
I~O
f I f'" t.
g :t
~ ~'
....
~
~
t
!lP
....[~
"
a ,.
r [
".-
~li
~f
\)
"
,
i
.
~
...
AI
..
't.
"
.....
g5~fi' ...
.... ., ..(-
..118.... li-
B :.. f i " !
'!o ~1'"
.... ~ r g. ..
:t....~l-il~
.. 10 ..
~~fi.I!:.1
; g 11. h~
1 Ii l/~i i
,tlfll!
li~51r.
~f!f"'~:5
~iiIJ!!
Clnn~""'~
10 f!,,1C .
... o'
N
...'
.'
...
'-.
'..
,'"
...;
r
," ~
....
J1~i~~''''
.... f '< ",Ii
.o~
3 n'
....a;
~ .c'C E.
~ 3 l::
., . I 'i dii
V 'lit
~li
~ 5i
..3
~~.
'< n
i!
........
~...
,,"
'" r~
g.....
l~~
::
!ei
is
I
~~\
,
\
i:~
"0'
~~)
~i
'"'
\ ,
\ "
,
\~
\ '"'
\\
:L:..
.._~
Fi
\
\
".'.
'-'
i
, i
\<
"
~
-
,.
l
l
.
..
..
..
.
1
;
.~-:.
"fj
roo
:i::
'-i
-\
r;'i
t::
~~.j.
"1'
..:~
':,:.
,}',
'~~'..
.....
.....
c...
~
.."
~
CI)
~
(')
p
-
CI)
h1
f)
I\)
:-
~
CI)
~
--t
~
'"
Q)
~
..
~
......
~
..
~
~
CIl
C\
1)
"
'" r:
....
, ~
.
~
~,
~
...".
C/)
o
c:
~
tXJ
b
--<
~
Q
I\)
-
s'
ffi