HomeMy WebLinkAboutHMP 701191000 Part 1-, WESTECH COMPANY
A l ,
Environmental Consulting -• Site Permitting
MITIGATION AND HABITAT MANAGEMENT Pl�
212 WAMPUM POINT ROAD
ASSESSOR'S PARCEL # 701-19-1000
JEFFERSON COUNTY, WASHINGTON
L,'
AUG 2 9 2018
JEFFERSON COUNTY
August 2018
G. Bradford Shea, Ph.D.
Submitted to:
JEFFERSON COUNTY
DEPARTMENT OF COMMUNITY DEVELOPMENT
621 Sheridan Street
Port Townsend, Washington 98368
Submitted by:
WESTECH COMPANY
P.O. Box 2876
Port Angeles, Washington 98362
P.O. Box 2876 - Port Angeles, Washington 98362 - Telephone: (360) 565-1333
email: brad@westechcompany.com
MITIGATION AND HABITAT MANAGEMENT PLAN
212 WAMPUM POINT ROAD
ASSESSOR'S PARCEL # 701-19-1000
JEFFERSON COUNTY, WASHINGTON
August 2018
G. Bradford Shea, Ph.D.
Copyright 2018 by G. Bradford Shea, Westech Company -- All Rights Reserved
Submitted to:
JEFFERSON COUNTY
DEPARTMENT OF COMMUNITY DEVELOPMENT
621 Sheridan Street
Port Townsend, Washington 98368
Submitted by:
WESTECH COMPANY
P.O. Box 2876
Port Angeles, Washington 98362
CONTENTS
CHAPTER/SECTION PAGE NO.
1.0 INTRODUCTION 1
1.1 Background 1
1.2 Proposed Project 1
1.3 Regulatory Framework 6
2.0 APPROACH AND METHODS 8
2.1 Approach 8
2.2 Methods 8
3.0 IDENTIFICATION AND POTENTIAL EFFECTS
ON PROTECTED SPECIES 10
3.1 Threatened and Endangered Species for Puget Sound
and Strait of Juan de Fuca 10
3.2 Conclusion — Threatened and Endangered Species 17
4,0 MITIGATION PLAN
19
4.1 Regulatory Setting
19
4.2 Existing Conditions
21
4.3 Project Impacts
23
4.4 Plan Components
24
4.5 Detailed Mitigation Measures
24
4.6 Implementation and Timing
25
4.7 Mitigation Monitoring
26
4.8 Contingency Plan
27
5.0 ON-SITE WETLAND AND BUFFER PLANTING PLAN
28
5.1 On -Site Wetland
28
5.2 Buffer Planting and Restoration Plan
28
6.0 CONCLUSIONS AND RECOMMENDATIONS
32
6.1 Conclusions
32
6.2 Recommendations
32
7.0 REFERENCES
34
TABLES
Table 1. Threatened and Endangered Species for Puget Sound
and Strait of Juan de Fuca 11
Table 2. Existing Native Plant species at the Site 22
Table 3. List of Native Plants for BLIffer Mitigation and Enhancement 30
WW 1562-EastQuilceneH MP,TOC/081618/mas
CONTENTS
CHAPTER/SECTION
FIGURES
Figure 1.
Location Map
Figure 2.
Vicinity Map
Figure 3.
Parcel Map
Figure 4.
Site Map with Proposed Project Area
Figure 5.
Site Plan
Figure 6.
Site Plan Showing Planting Areas
APPENDICES
Appendix A — Site Photographs
VWV1562-EastOuilceneHMP.TOC/081618/mas
PAGE NO.
2
3
4
5
7
29
A-1
1.0 INTRODUCTION
1.1 BACKGROUND
The Property (Site) is located at 212 Wampum Point Road, in Jefferson County
Washington. The Property is owned by A.J. Schwagler and Jacqueline Schwagler
at 233 Alice Road, Port Angeles, Washington. It is recorded as Assessor's Parcel #
701-19-1000.
The Site lies within Jefferson County, Washington in the Northeast Quarter of
Section 19 of Township 27 North, Range 1 West, W.M. (Figures 1, 2, 3, and 4).
The Site is located approximately 1.3 miles east of the town of Quilcene in an
unincorporated area of Jefferson County. The Site is located on the eastern
shoreline of Quilcene Bay on Hood Canal (Jefferson County 2018a).
The Property is a long, roughly rectangular shaped parcel, with the developed
portion being a wider portion at the south end of the parcel (see Figure 3). The Site
lies generally east of the Mean Higher High Water Mark (MHHW).
The developed portion of the Property is surrounded by a seawall and is about 135
feet wide (east to west) on the south side, widening to 180 feet in width on the north
side. It is roughly 180 feet long (north to south) on the east side and nearly 300 feet
long on the west side with an average width of 168 feet and an average length of
230 feet or 0.88 acres in the developed area (Zenovic 2018). The total lot size is
listed as 4.18 acres including a steep, undevelopable portion north and east of the
developed area and east of the Ordinary High Water Mark (OHWM) (Jefferson
County 2018x), The Parcel location is shown in Figures 14.
The Parcel extends to the low bank beach front, with a rock seawall and a cobble -
sand beach. An existing driveway provides vehicular access to the Property from
Wampum Point Road (off of East Quilcene Road). There is an existing residence
which is proposed for an addition on the southeast and east sides, away from
Quilcene Bay. The Property has an existing septic system. Quilcene Bay lies to
the west of the OHWM. The Property is designated as "Suburban" by the Jefferson
County Shoreline Master Program (Jefferson County 2018c). This shoreline
designation requires a 150 foot setback from OHWM plus an additional 10 foot
setback for structures.
1.2 PROPOSED PROJECT
The Property currently contains an existing residence, a detached garage and an
existing shed. There is also an installed septic system.
WW1562-EastQuilcene. RPT/081618/mas
(D
lip
LLJ
oil
East `fie: n � Fid
2
c�
O
Q
V
d
O
a
.Q
4f
N
O
CL
O
L-
0. a
�3
CL
ca
2
cn
m
cm
M
00 00
Ir- V-
0
O O
N N
� L
c t:
Ix w
= W
O
U �
O
.0 O
V �
G1
N d
d V
O
N
The owner intends to construct an 1,150 square foot addition to the residence on
the parcel in compliance with Jefferson County requirements (home -site with
addition as shown in Figure 5) (Zenovic 2018). The addition will be on the
southeast and eastern sides of the residence.
Planned construction activities will occur within the 200 foot shoreline zone. This
Habitat Management Plan (HMP) outlines proposed measures to mitigate potential
impacts which may affect the shoreline zone as per Jefferson County regulations,
and to comply with FEMA standards.
1.3 REGULATORY FRAMEWORK
The marine shoreline along this Property is considered a Shoreline of Statewide
Significance and has been designated as Critical Habitat for Hood Canal Summer
Chum and Puget Sound Chinook salmon (50 C.F.R. 226). The Shoreline is
classified as a "Fish and Wildlife Habitat Conservation Area" (FWHCA) by
Jefferson County, requiring a 150 foot buffer from the OHWM.
It is the intention of the owner to construct an addition to the existing residence on
the Site (see Figure 5). The addition will be a one story addition located at the
southeast corner of the existing home. The owner has proposed an 1,150 square
foot addition for a bedroom and attached garage, plus a 20 square foot addition to
the entry on the east side of the residence.
During the construction of the proposed home addition, the Project will disturb
surface soils and some existing vegetation. The Property owner has contracted
with Westech Company (Westech) to satisfy the County's requirements in regards
to Critical Areas and Shoreline Buffer Requirements through preparation of this
Habitat Management Plan.
This Report constitutes an HMP which will describe existing conditions on the Site,
define the impacts of development, and outline a management proposal to maintain
and enhance the existing functions and values of the buffer and its associated
watershed and to ensure "No Net Ecological Loss of Shoreline Functions"
(RCW36.70A.480).
This Plan also satisfies analysis pertinent to County compliance with federal
requirements of. FEMA relating to the NMFS requirements for a Biological Opinion
on Threatened and Endangered species in this portion of the Hood Canal. This
document is intended to satisfy the requirements of pertinent Jefferson County, and
relevant state and federal regulations and ordinances.
WW 1562-EastQuilceneHM P. RPT/081618/mas
4)VA / W
�-
U V �
ri �A i
w +*w+
3N3Jj'ino,1SV3
M31EW
ws I
O
l'1
II C
m
4.
o CL
L6
LM
U-
Q
0-
W
V)
00
0
N
A
C
M
C.
0
U
U
O
cn
00
0
N
O
+r
m
Z
O
Q
U
O
C
N
O
O
w
2.0 APPROACH AND METHODS
2.1 APPROACH
The approach for this investigation into the impacts of development of this Site
included a detailed review of County Assessor's parcel maps, Critical Area Maps,
and aerial photographs of the Site. It also references mapped locations of Species
of Concern by the Washington State Department of Fish and Wildlife, mapped
locations of ESA (Endangered Species Act) listed species' critical habitat by NOAA-
NMFS (National Marine Fisheries Service) and topographic maps of the area. A
Site Plan prepared by Zenovic and Associates (2018) was also reviewed and
utilized to help define proposed planting areas (see Section 4.3 and Figure 5).
Westech's field investigations for the Habitat Management Plan (HMP) were carried
out during May and June 2018 by Dr. G. Bradford Shea, Principal Ecologist in
coordination with the owners and their engineers, Zenovic and Associates. During
Site visits, the Property was inspected, and Site characteristics were noted.
Relevant measurements were taken for mapping purposes, photographic
documentation of the Site was acquired, and potential mitigation was identified.
Updated plans and studies cited above were reviewed by Dr. Shea during the
period May and June 2018.
2.2 METHODS
Westech's field reconnaissance involved examining the existing conditions found at
the Site. This included reviewing the area proposed for development in relation to
the natural features found on-site. Botanical studies were conducted involving
identification of plant species that could be found growing at the Site. Site
measurements were taken (including dimensions of proposed planting areas) using
fiberglass and steel tape measures.
A qualitative assessment of the landscape was conducted to determine the
presence of invasive species, the composition and characteristics of plants in the
critical area, evidence of historical land uses, the slope of lands adjacent to critical
areas, soil textures and stability and an assessment of the role of existing
vegetation in supporting soil stability. Westech also assessed the extent of existing
human disturbance in the critical areas. This information was used to assess the
potential impacts of the proposed project.
WW1562-EastQuileene. RPT/081618/mas 8
This HMP has been formulated to assure "No Net Ecological Loss" within the
shoreline zone and to "maintain or enhance the existing functions and values of the
associated watershed" (Jefferson County Code, Chapter 18.25 2018c; RCW
36.70A.480). Chapter 3.0 describes pertinent issues related to potential effects on
federally and state listed Threatened and Endangered Species. Chapter 4.0
describes the shoreline zone as well as goals and objectives of this HMP and the
performance standards that will be utilized to assess the effectiveness of this Plan.
This Plan is intended to restore and enhance the integrity of the Site by improving
the quality of habitat within the shoreline buffer zone. This will involve erosion
control during construction and through planting of additional native vegetation at
the Site. These recommendations have been formulated to be implemented in
accordance with recommendations for erosion control and preparation of HMPs
within the shoreline zone (Jefferson County Code, Chapter 18.25 2018).
WW1562-EastQuilcene.RPT/081618/mas 9
3.0 IDENTIFICATION AND POTENTIAL EFFECTS ON PROTECTED SPECIES
An endangered species is any species which is in danger of extinction
throughout all or a significant portion of its range, and a threatened species, is
any species which is likely to become an endangered species within the
foreseeable future throughout all or a significant portion of its range (Endangered
Species Act (ESA) 1973). Affecting any threatened or endangered species is
considered a "take" under the ESA. A "take occurs if a listed species is
harassed, harmed, pursued, hunted, shot, wounded, killed, trapped, captured, or
collected, or from an attempt to engage in any such conduct.
"Take" comes in two forms: 1) incidental take that is approved through
consultation with the responsible federal agency in the form of a Biological
Opinion (Section 7), or 2) a Habitat Conservation Plan (Section 10) and
unauthorized "take (Section 9) of the ESA. Habitats used by listed species are
also protected by the ESA, classified as Critical Habitat. Adverse modification of
Critical Habitat is also an unauthorized "take" of the listed species.
Protective regulations prohibiting unauthorized "take" of listed species are known
as the 4(d) rules. When endangered species are listed, the prohibition of
unauthorized "take" is also made effective at the same time. In addition,
protective regulations for threatened species may be published at a later date
after listing.
3,1 THREATENED AND ENDANGERED SPECIES FOR PUGET SOUND,
HOOD CANAL AND STRAIT OF JUAN DE FUCA
A species list for Puget Sound was compiled from the National Oceanic and
Atmospheric Administration (NOAH) National Marine Fisheries (NMFS West
Coast Region) as well as the U.S. and Washington Department of Fish and
Wildlife (USFWS and WDFW). There are nine fish species, five bird species,
three marine mammal species, and four amphibian or reptile species that were
listed on at least one of these lists. The following section is a discussion of these
species and the likelihood of potential impact from the proposed Project. A list of
all ESA listed species in Puget Sound, including Hood Canal and the Strait of
Juan de Fuca can be found in Table 1.
Fish
There are nine listed species of fish that are listed within the Puget Sound region.
These species include Bull Trout, Bocaccio Rockfish, Canary Rockfish, Chinook
Salmon (Puget Sound), Chum Salmon (Hood Canal), Eulachon, Green Sturgeon,
Steelhead (Puget Sound), and Yellow -Eye Rockfish. Eight of these species are
listed as "threatened", while one, the Bocaccio Rockfish, is listed as
"endangered".
WW1 562-EastQuilcene.RPT/081618/mas 10
Q
LL
W
z
a
D
I
U.
O
Maa-
OC
H
a
Z
D
O
U)
w
CD
❑
CL
Q
LL
w
W
W
CL
U)
W
w
z
a
z
w
z
a
w
w
LU
r
W
J
Ltil
Fa -
a
O
E
O
0
w 0 w N
Ti a� ;2 -0 `0 -0 A c ;p
c o -0 T3- b o o -0
U Z U U U U Z Z U
a
-coo�
N
N
N
N
N
rte..
N
(D
c
c
c
c
c
c
C
W LLi
N
N
N
N
L
d
C
C
C
F -F
Rf
nS
w
-
w 0 w N
Ti a� ;2 -0 `0 -0 A c ;p
c o -0 T3- b o o -0
U Z U U U U Z Z U
I
A
c
p�
W LLi
N
N
N
N
L
d
C
C
C
d
Rf
nS
w
z
FF-
Imo,
F-
O
cif
CO
y
to
0
Co
3
IL
I
p�
W LLi
p�
y
C
co
m
O
cif
CO
y
to
Co
3
Q
•V
,b�
C
O
Y
v
(ab
�
�
�
'0
u
V
co
C
V
O�
O
O
-Q
v�
-c
C
M
Q
4
u
-Z
v
v
ca
Q
O
cu
m
C
NO
co
�''
�`
,�
'C
Cl)
�,
N
z
co
?
-Q
v
v
�
.Q
V
.p
yN
Q)
(D
0�
_
E
-v
--
o
d
U)CL
c
-
:3
o
d
, r
Q
�«
�[
J
Y
D
N
A
c
y..
N
U
N
Q)=
4)
v
cN
c
A
A
O
=
N
c
U
_O
�=
�c
o
fn
W
c
-c
�
m
ll1
F=
ca
c
o
v
c
A
t
y
0
coo
O
cts
c
c
cts
N
N
-C
d
N
am_
d
N
Ul)
en
/Q
V
W
Z
D
ur
0
F•-
0
Z
Q
N
W
CL
0 -z
U-
CO c
W Ira
V 0
a�
U)
w
w
C)
0
w
z
Q
LU
Z
LU
W
F --
w
J
Ln
H
N
U)
`
A,
.v
N N (D
c 0 4�• N
CL
°mm
mm°
WW
WW
LL
W
I
d
'V
47 R)
N
N
ca c�
m ca
m m
U)
U) c c
-C = c
W W
H W F-
CL a
E
E
�
R
CD
w
E
e,
cu
(D
z
E
co
ca 00
Q
o ct;CL
m
U)
cu
c 0
�uOW
°
m
—
E
E 2
Z
,�
HHS
C
' � c4
Ea�m�
O
�"�-vm
E
cv (ti 0cv
fi -j
IL
U' �Z
—j —iol
O
m
N
O
C;
E
•
N
T
E
00
0
m
F-
3:
cv
c
m
a
N
cc
W
N
10
0
Gr
Salmonids
There are four different species of salmon located in the Puget Sound
Evolutionary Significant Unit (ESU) that are federally listed as "threatened".
Puget Sound Chinook salmon (Oncorhynchus tshawytscha) and Hood Canal
Chum salmon (Oncorhynchus keta) were both listed as threatened on June 28,
2005.
Most Chinook spawn in large rivers, such as the Big Quilcene and Duckabush
Rivers. They will also use small, coastal streams with sufficient water flow for
spawning.
Chum salmon typically use small coastal streams as well, or in the lower reaches
of large rivers. Chum usually stay closer to salt water than Chinook do.
Spawning runs generally begin in spring and summer, although some fish closer
to the ocean will begin in early fall. Chum salmon along the Strait of Juan de
Fuca and Hood Canal have a spawning run during the summer (NOAA 2017).
Puget Sound Steelhead (Oncorhynchus mykiss) was listed as "threatened" on
May 11, 2007. Steelhead generally prefer fast water in small -to -large
mainstream rivers, and medium -to -large tributaries. The Puget Sound Steelhead
originate below natural and manmade barriers in rivers that flow directly in the
Puget Sound (NOAA 2017).
Bull Trout (Salvelinus confluentus) are also a salmonid and was listed as
"threatened" in 1999. They require colder water temperatures than most
salmonids and are, therefore, mostly found in deeper marine waters and cold,
clean, fast moving streams and rivers. They also require complex habitats for
shelter and foraging (NOAA 2017).
Quilcene Bay may support the above listed salmonid species. These salmonids
require large perennial rivers and streams (such as the Big Quilcene and
Duckabush Rivers) for their spawning runs. However, the proposed project will
be located back from the shoreline (approximately 60 feet) and the project will be
an addition to an existing single-family residence constructed in an area already
developed by other residences. Therefore, our determination is that that the
proposed Project "may affect, not likely to affect" these fish.
Rockfish
There are three species of rockfish that are listed on the ESA species list. The
Bocaccio Rockfish (Sebastes paucispinis) was listed as "endangered" in the
Puget Sound/Georgia Basin Distinct Population Segment (DPS) in 2010. Canary
Rockfish (Sebastes pinniger) and Yellow -eye Rockfish (Sebastes ruberrimus)
were both listed as "threatened" in the Puget Sound/Georgia Basin DPS in 2010
as well. However, due to recent genetic testing that shows a lack of
WW1562-EastQuilcene.RPT/0816181mas 13
"discreteness" from the genetic makeup of Canary Rockfish on the coast, NOAA
has proposed that it be removed from the ESA Threatened and Endangered
Species list (NOAA 2017). However, since this is only a proposal and is not yet
final according to NOAA's website, the Canary Rockfish is still included as a
"threatened" species for the purposes of this report.
Although juvenile rockfish tend to be more than adults in shallower water,
rockfish make their home on the ocean floor, generally between 80 to 820 feet
deep. They remain in the deep saltwater areas their entire lives, and do not
wander into freshwater streams or rivers. Therefore, it is very unlikely that any
rockfish would be found along the relatively shallow Quilcene Bay shoreline.
Therefore, we believe that a "will not affect" determination for effects of the
Project on these species is justified.
Eulachon and Green Sturgeon
Eulachon (Thaleichthys pacificus) is an anadromous fish found along the Pacific
coast from California to Alaska. These smelt were federally listed as
"threatened" on March 18, 2010, however, they were not considered for potential
impact on this Project because their Critical Habitat for Southern DPS is mainly
along a large section of the Columbia River, with a lesser presence in the
Quinault and Elwha Rivers (NOAA 2017). They do not have a recorded
presence in the Puget Sound and, therefore, we believe that the proposed
Project "will not affect" the federally listed Eulachon species.
On April 7, 2006, the Southern DPS of Green Sturgeon (Acipenser medirostris)
was listed as "threatened" under the ESA (NOAA 2016). On October 9, 2009,
the final Southern DPS Green Sturgeon Critical Habitat was designated. This
includes marine waters, estuaries, harbors and rivers along the Pacific Coast
from California to Washington. However, the only Critical Habitat in Washington
is listed as "Willapa and Grays Harbor as well as the Lower Columbia River
Estuary from the mouth to rkm 74" (NOAA 2017). The Puget Sound area is not
designated as Critical Habitat and the Green Sturgeon DPS is not mapped near
the Project Site, we have given a "will not affect" determination for this species.
Birds
There are five species of birds listed on WDFS's state ESA species list. These
species include the Ferruginous Hawk (Buteo regalis), Marbled Murrelet
(Brachyramphus marmoratus), Northern Spotted Owl (Strix occidentalis),
Streaked Horned Lark (E'remophila sopestris strigata), and the Yellow -Billed
Cuckoo (Coccyzus americanus). The Northern Spotted Owl and Streaked
Horned Lark are both listed as "endangered" on the state WDFW list, while the
Ferruginous Hawk and Marbled Murrelet are both listed as "threatened". The
Yellow -Billed Cuckoo is listed as a "candidate" with the state list but is classified
as "potentially threatened" on the federal list.
WW1 562-EasQuilcene. RPT/081618/mas 14
Ferruginous Hawk
The Ferruginous Hawk was give state status of "threatened" in 1983 and there
has been a recovery plan in place since 1996. They inhabit semi -arid, prairie
ecosystems of western North America, and they build their nests on cliffs, rocky
outcrops, small trees and transmission line towers. Washington State is on the
northwestern edge of their breeding range, and nests in Washington are
generally found in steppe or shrub -steppe habitat (WDFW 2017).
Although there are small trees and transmission line poles and towers within the
Project vicinity, since the Project Site is not located in a semi -arid, prairie
ecosystem, and since there have not been any reported sightings of the
Ferruginous Hawk in the vicinity of the Site, the impact of the proposed project to
this species is negligible. Furthermore, the proposed Project consists of the
construction of an addition to a single-family residence an area already
developed with other residences and is devoid of any potential nesting objects.
Therefore, we feel comfortable giving a determination of "will not affect" in
regards to this species and the proposed Project.
Marbled Murrelet
The Marbled Murrelet was federally listed as "threatened" in 1992, with its Critical
Habitat designated in 1996. In Washington State, the species occurs in the
greatest numbers in the Puget Sound and Strait of Juan de Fuca. Marbled
Murrelets nest inland in forests that largely consist of thick forest with trees that
have large branches to support their nests. Murrelets nest in tree stands varying
in size between several acres to several thousand acres, generally several miles
inland (WDFW 2016).
Since the Project Site is located near a shoreline (Quilcene Bay) it is very unlikely
that there are nests of the Marbled Murrelet in the vicinity. The project also sits
back from the shoreline. Therefore; it is our determination that the proposed
project can be determined that it "may effect, not likely to affect" this species.
Northern Spotted Owl
The Washington population of the Northern Spotted Owl was federally listed as
"threatened" under the ESA in 1990. Areas of critical habitat were designated in
1992 and 2008 to further protect the species. Northern Spotted Owls typically
inhabit older forested habitats with moderate to high canopy enclosure (60 to 90
percent), so as to provide cover and protection from predators. These owls have
a very large range for breeding (1,000 acres plus) (WDFW 2017).
VWV1562-EastQuilcene. RPT/081618/mas 15
Due to their large range, there are certainly forests that meet the owl's nesting
criteria within 5-10 miles of the Project Site. However, there is no observed
evidence of the owl or its nests or owl habitat near the Site. Therefore, a "will
not affect" determination is justified.
Streaked Horned Lark
The Streaked Horned Lark was federally listed as a "candidate" for listing under
the ESA in 2001. As of 2012, it is still under review to be listed as "threatened" in
the future. The population of the larks had their initial significant population
decline when the Native Americans of the past ceased to regularly burn the
prairie grasslands, with trees replacing that habitat and pushing the larks further
back. This change in habitat has continued with the conversion of the grasslands
into agricultural and residential use. The lark nests on the bare ground in
sparsely vegetated sites dominated by grasses and shrubs, with the heaviest
concentration currently in the southern lowlands of Puget Sound. Due to the
changes in their habitat, the larks are often found at airports and military bases
where the grass fields that they require are maintained. There are only 4 known
nesting sites in the Puget Sound area (WDFW 2005, 2017).
The Streaked Horned Lark's known nesting locations are not within the vicinity of
the Site (south end of Puget Sound), they appear to be nearly 100 miles away.
The topography and vegetation in the immediate area surrounding the Site is not
conducive to the lark's preferred nesting requirements, we believe that a "will
not affect" determination is justified.
Yellow -Billed Cuckoo
The Yellow -Billed Cuckoo was listed as a "candidate" for listing under both the
state and federal lists. However, further investigation found that the population in
Washington died out many years ago, and that breeding no longer occurs in
Washington, Oregon, or British Columbia (WDFW 2017). Since there is no
breeding within a significant area around the Project Site, we feel comfortable in
giving a "will not affect" determination for this species in regards to the
proposed Project.
Marine Mammals
There are three marine mammals that are listed on the ESA list in the Puget
Sound area. The Gray Whale (Eschrichtiu robustus) is listed as "sensitive" under
the State status, but has no federal listing. Both the Killer Whale (Orcinus Orca)
and the North Pacific Right Whale (Eubalaena japonica) are listed as
"endangered" under both state and federal lists (WDFW 2017).
WW1562-EastQuilcene.RPT/0$161$/mas 16
Despite the presence of these whales in the Puget Sound and the Strait of Juan
de Fuca, since the proposed Project is located approximately 500 feet from the
nearest shoreline and since it is an addition to an existing single-family residence
near other previously constructed residences, we have determined that the
proposed Project "will not affect" these mammals.
Amphibians and Reptiles
The Green Sea Turtle (Chelonia mydas), the Leatherback Sea Turtle
(Dermochely coriacea), and the Loggerhead Sea Turtle (Caretta caretta) are all
listed under the ESA. The Green Sea Turtle is listed as federally "threatened",
while both the Leatherback and Loggerhead Sea Turtles are federally listed as
"endangered" (WDFW 2017). However, as with the whales, sea turtles will not
be found near deep water and, therefore, will not be near the Project Site. We
feel comfortable giving a "will not affect" determination in regards to these
species.
The Northern Leopard Frog (Lithobates pipiens) is listed as "endangered" under
the state list. However, further investigations found that this frog can only be
found in two locations in Washington State. Both locations (Potholes Reservoir
and Gloyd Seeps) are located in the Columbia Basin Wildlife Area in Grant
County and are, therefore, not in the vicinity of the Project Site. Therefore, we
feel comfortable giving a "will not affect" determination for this species in
regards to the proposed Project.
3.2 CONCLUSION — THREATENED & ENDANGERED SPECIES
As discussed above, many of the species listed on the ESA will not be impacted
at all by the proposed Project. As for the species that were given a "may affect,
not likely to affect" determination, we do not believe that significant Mitigation
Measures are necessary for this Project, beyond those recommended in this
Plan.
Located on Quilcene Bay, the Project Site is the construction of a 1,170 square
foot addition to an existing single-family residence in an area already developed
with other residences. Field investigations and the Site Plan (Zenovic 2018)
found that the addition will be built within the 150 foot. buffer zone (approximately
60 feet from OHWM) on the side of the residence away from the water).
Therefore, the construction of the proposed residence will have no significant
effect, provided that the Mitigation Measures outlined in this plan are followed
(see Chapters 4.0 and 5.0). Figures 4 and 5 show the Project Site, both as it is
mapped and as it was observed in the field. Chapters 4.0 and 5.0 include
Mitigation Measures which will be implemented including erosion control and
planting native plants in the shoreline buffer zone.
WWI 562-EastQui Icene, RPT/081618/mas 17
FEMA Requirements
The Federal Emergency Management Agency (FEMA) has certain requirements
for Habitat Assessments in flood zones such as the Project Site. Primary
Constituent Elements (PCEs) including Endangered Species and Habitats are
discussed in Section 3.1 above. The proposed Mitigation Measures are
discussed in Chapters 4.0, 5.0 and 6.0.
The Project is not expected to affect water quality, including water temperature
and dissolved oxygen in the marine waters adjacent to the Project, provided that
Best Management Practices (BMPs) are used during construction. In addition,
standard Mitigation Measures should be implemented during the construction of
the Project.
The recommended Mitigation Measures are discussed in Chapter 4.0 and
summarized in Chapter 6.0. Chapter 5.0 discusses the Riparian Vegetative
Community and mitigation of effects through a Buffer Planting Plan including
planting of additional native species around the proposed home -site.
WW1562-EastQuilcene. RPT/081618/mas 18
4.0 MITIGATION PLAN
4.1 REGULATORY SETTING
There are several jurisdictional issues related to the development of this parcel of
land. The Site is a low bank site. Shoreline processes in the area include
periodic scouring and deposition, however, the property has a rock seawall which
limits periodic changes in the location of the shoreline.
The Site is zoned Rural Residential 1:5. The purpose of Rural Residential zoning
is to provide areas of low density residential use, free from commercial, industrial
or moderate density residential development (JCC 12.27). Most of the lots in the
area are less than 1.0 acres in size.
The Site is located along a section of shoreline that is considered a "Shoreline of
Statewide Significance" and is regulated under Jefferson County's Shoreline
Master Program (Jefferson County 2018c). This shoreline has been designated
under the Shoreline Master Program (Section 18.25 JCC) as having a Suburban
shoreline environmental designation.
Shoreline Residential (SR) Suburban areas are areas landward of the Ordinary
High Water Mark (OHWM) that are characterized as predominantly single family
high-density (RR 1:5) residential development or is platted for such development.
Under the Jefferson County Shoreline Master Program, the standard buffer zone
for rural residential structures is 150 feet from the Ordinary High Water Mark,
plus a 10 foot building setback.
The Site is mapped within FEMA Flood Zone A. There is also a mapped wetland
located north of the home -site area. Portions of the property over 100 feet east
and north of the home -site are listed as moderate landslide hazard areas,
however, this is not likely to affect the home -site. There are no erosion hazard
areas mapped on the Property (Jefferson County 2018a).
This shoreline has been designated "critical habitat" for threatened salmonid
species, specifically the Puget Sound Chinook, Hood Canal Summer Chum,
steelhead and bull trout. These listings come from the National Marine Fisheries
Service (NIVIFS) purSUarit to the Endangered Species Act (ESA).
The Growth Management Act (RCW36.70A.480) mandates that the County
protect such critical areas. Jefferson County carries out this mandate by
classifying this shoreline as a "Class 1 Fish and Wildlife Habitat Conservation
Area" (FWHCA). These areas are considered to be of "critical importance to the
maintenance of endangered, threatened or sensitive species of fish, wildlife,
and/or plants" (JCC18.25). Required buffers for this designation are 150 feet
WW1562-EastQuilcene.RPT/081618/mas 19
from the OHWM in accordance with the County's Critical Areas Code (Jefferson
County 2018b, JCC 18.22).
Due to the presence of federally Threatened or Endangered species in the
Aquatic Zone the shoreline is considered a Critical Area (JCC18.22) (Jefferson
County 2018b). For the residential intensive shoreline, a buffer of under 150 foot
may be established under certain conditions. Such buffers may be reduced
upon County approval of an acceptable Habitat Management Plan (to a 112.5
foot buffer).
Landowners may obtain a reduction in the size of the buffer required for
FWHCAs. The administrator may reduce buffer widths on a case-by-case basis
provided that standards are met for avoiding and minimizing impacts and that the
buffer reduction does not "adversely affect the habitat functions and values of the
adjacent Class I WHCA. Any projects that "alter, decrease or average the
standard buffer" require an accompanying Habitat Management Plan (HMP).
Because this project involves elements to be built within the standard buffer area,
but in line with or behind previously constructed features, an HMP is required to
mitigate and offset any adverse ecological effects.
This document is also the best way to meet the intent of RCW36.70A.480 which
provides for Jefferson County to make a determination of "No net loss of
ecological functions" with or without mitigation, for renovation of existing
shoreline structures. This document includes a "No Net Loss" ecological
evaluation, proposed Mitigation Measures to offset impacts and a Habitat
Management Plan (Planting Plan) to assure long-term health and ecological
productivity of the buffer zone.
These documents (HMPs) must include maps showing the proposed
development Site and its relationship to surrounding topographic features; the
nature and density of the proposed development; and the boundaries of forested
areas_ The report shall also describe the density and nature of the proposed
development in enough detail to allow analysis of impacts on identified fish and
wildlife habitat. The report must describe how any adverse impacts resulting from
the project will be mitigated. Possible Mitigation Measures may include, but are
not limited to, establishing buffer zones, preserving plant and tree species,
limiting access to habitat areas, seasonally restricting construction activities and
establishing a timetable for the periodic review of the Plan (JCC 18,22).
VWV1562TEastQuilcene. RPT/081618/mas 20
4.2 EXISTING CONDITIONS
The Site is located roughly 1.3 miles east of Quilcene, Washington. The land area
of the parcel is 4.18 acres in size. The developed area near the home -site is
approximately 0.88 acres in size and is approximately 230 feet long (average
distance to the OHWM) by 168 feet wide. The recorded parcel extends into
Quilcene Bay. An existing driveway off of Wampum Point Road provides vehicular
access to the Property.
Figure 5 shows features on the Site and the proposed development area. The
parcel contains an estuarine wetland to the north of the developed area along
Quilcene Bay's eastern shoreline. The developed area of the Property and adjacent
land to the south is relatively flat. The area to the east is a steep bluff, which is
heavily forested. The developed area is vegetated by mixed grasses. The
undeveloped forest is vegetated by lowland coniferous forest typical of the Hood
Canal area (see Table 2).
The shoreline adjacent to the Property has been designated as critical habitat for
four species listed as threatened under the Endangered Species Act: Puget Sound
Chinook Salmon, Hood Canal Summer Chum Salmon, and steelhead and bull trout
(50 C.F.R. 226).
The developed portion of the Site is not forested. The eastern and northern area
are forested with mature forest species. The groundcover in the forest area is
dominated by mixed shrubs and small trees (see Table 2).
The Natural Resource Conservation Service (MRCS) has mapped two dominant
soils on and in the immediate vicinity of the Site (NRCS 2018). Because NRCS
maps can be inaccurate at this scale it is not possible to determine the actual
boundary between these soils or the specific soils among these that are found on-
site. These soils include:
• Coastal Beaches. This soil is usually very well drained (sand, gravel
and cobble) and has a depth to water table of about 0 - 11 inches. It
has a high frequency of flooding. It consists of sands and gravels to a
depth of 60 inches. These soils are subject to influence of tides and
storm waves.
• Everett Very_O-r�vvellyr 5andylgarri. This_s_omewhat excessively- -_-
drained soil was formed in sandy and gravelly glacial outwash. Its
profile is typically 24 inches of very gravelly sandy loam overlying
stratified very gravelly loamy sand to silty at 24-35 inches depth, with
extremely cobbly coarse sand to a depth of 60 inches. Depth to
water table is more than 80 inches.
WW1562-EastQuilcene.hPT/081618/mas 21
TABLE 2. EXISTING NATIVE PLANT SPECIES AT THE SITE
(212 WAMPUM POINT))
7.
c6mm6nMarne
5cieniifwc Name
Poa annua
Kentucky Blue Grass
Dandelion
Taraxacum officinale
Perennial ryegrass
Lolium perenne
Cooley's hedge nettle
Stachys cooleyae f J
Bearded fescue
Festuca subulata
Alaska brome
Bromus sitchensis
Yarrow
Achillea millefolium
Smooth hawksbeard
Cre_pis capillaris
Common vetch
Vicia sativa
Plantain
Plantago mayor
WW1562-EastOuilceneHMP.Tab2/081618/mas 22
The Site has coastal beach soils at the western edge, with the remainder of the Site
underlain by Everett soils. These soils tend to be dominant along this area of
Quilcene Bay. Other minor soil types include Aiderwood and Indianola soils (NRCS
2018).
4.3 PROJECT IMPACTS
The landowner's plan for this Property entails building an 1,150 square foot, single -
story addition behind (landward of) the existing home within the 150 foot buffer
zone as shown on the Site Plan (Figure 5). This new addition would include an
attached garage and enlarging an existing bedroom, plus a small increase in the
entryway (20 square foot optional addition).
The primary impacts associated with this project are those generally associated
with construction, Figure 5 is a map of the proposed building addition on the Site.
Currently the existing structures on the Site are an existing residence, a detached
garage and a small shed. The existing home, garage and shed are located inside
the standard buffer zone.
The current septic tank and drainfield will remain in place and continue to be used if
approved by the County. The existing drain -field will be utilized as appropriate for
the enlarged bedroom, as approved by the Jefferson County Health Department.
Any reserve drain -field required by the County will be located outside of the buffer
zone if feasible.
The potential impacts of this project will result primarily from the processes of
grading and clearing the areas for construction of the new home. Additionally,
impacts may result from the movement of construction vehicles on the Site,
however these impacts will be limited, since the addition is adjacent to the existing
driveway. These potential impacts may include the following:
• The area surrounding the new addition may result in impact to soils
and surface vegetation. Soil disturbance caused by the construction
process and the removal of some existing vegetation (grasses) in the
buffer will occur during grading on the Site. Additional earth moving
and grading during the construction process may contribute to
increased erosion.
The removal of some native vegetation in the buffer zone. Native
vegetation has already been removed and replaced by native and
non-native grasses. There may also be soil impacts from the
movement of construction vehicles on the Site.
vWV1562-EastQuilcene. RPT/081618/mas 23
• Because the residence addition will be placed within buffer zones for
the shoreline area, impacts on shoreline plants may occur from direct
construction activities or from erosion or siltation runoff from the
construction area. This will be very limited since the Site is
essentially flat.
• The historical removal of some native vegetation from the Site has
already resulted in the direct loss of some habitat. Many species of
bird, small mammal and insect use native plants for food sources and
refuge. Any further loss of vegetation in the buffer zone could reduce
habitat for these organisms.
The Management Plan below is intended to offset these adverse impacts. The
Mitigation Measures developed in this Plan are intended to compensate for the
impacts to the shoreline habitat and buffer zone.
4.4 PLAN COMPONENTS
The components of the Mitigation Plan include the following:
Erosion control methods will be used to prevent on -Site rill or sheet
erosion from moving sediments toward the adjacent shoreline or to
the adjacent wetland to the north. This will be accomplished through
project timing and emplacement of control measures during
construction. A silt fence will be placed on the edges of the
construction area, adjacent to the construction envelope and between
the construction and the shoreline buffer zone (both to the west and
to the north).
Native vegetation will be planted in three areas near the residence to
mitigate disturbance to existing plants in the buffer zone.
• No nutrients, pesticides or other contaminants will be used within 100
feet of the shoreline.
4.5 DETAILED MITIGATION MEASURES -
The detailed Mitigation Measures corresponding to the Plan Components listed
above are as follows:
• Timing of exterior construction, as feasible, should be limited to the
"dry season" between May 1 and October 30. Limiting construction to
this time period, less effort will limit erosion and silt runoff.
WW1 562-EasQuilcene.RPT/081618/mas 24
All graded areas should be covered or re -vegetated prior to
November 1. If it is necessary to continue construction into the "wet
season," then extra measures will be required for erosion and silt
runoff control. This should be checked by a licensed engineer.
All erosion control measures should be installed prior to beginning
grading or other ground -disturbing construction activities. A silt fence
will be placed between the residence addition and the beach (to the
west and north). This should be kept in place until plantings and new
grasses and/or shrubs have become established. Straw bales, jute
netting or other material should be kept on -Site and used to stabilize
open areas following grading.
■ Two areas within the buffer zone will be re -vegetated with native plant
species as per the Planting Plan described in Chapter 4.0 in order to
reduce future erosion and enhance buffer function. Additional re-
planting should occur around the residence addition as shown.
Planting success will be monitored and will conform to performance
standards as described in Sections 4.6 and 4.7. If performance
standards are not met, additional plantings or other remedial actions
will be taken to meet standards as per requirements in Section 4.7.
Implementation of these Mitigation Measures is anticipated to
mitigate impacts associated with the development of the Site and
disturbance to the buffer zone. However, the narrow size of buffers at
this site and the limited filtering capacity of sandy soils will limit the
extent to which the Site will filter long-term pollution and sediments
entering the adjacent estuarine wetland and the waters of Quilcene
Bay. To minimize the potential for contaminants to enter these
waters, no additional nutrients, pesticides or additional contaminants
should be used on the Site within 100 feet of the OHWM.
4.6 IMPLEMENTATION AND TIMING
The continuation of exterior construction on the Site should be conducted between
May 1 and October 30 as feasible, in order to minimize ground -disturbing activities
during the rainy season. Any work -carried -out -during -the -rainy season should have
all erosion control measures in place prior to beginning.
New plantings in the buffer zone should be carried out during early fall if possible
(September -October) or during early spring (March- April) to avoid the necessity of
supplemental watering. Plantings can be placed during the winter or early spring
(March -May) if necessary, but fail planting is preferred.
WWI 562-EastQuilcene. RPT/081618/mas 25
If plantings occur during summer months, supplemental watering with a drip
irrigation system or equivalent method may be necessary. Westech recommends
that monitoring of plantings be conducted by a qualified botanist, landscaping firm,
certified arborist, or registered nursery personnel. Success of plantings should be
maintained above a performance standard of 100 percent the first year and 90
percent thereafter (see Section 4.7).
4.7 MITIGATION MONITORING
Buffer areas serve a variety of functions. They are important in that they reduce the
adverse impacts of adjacent land uses by stabilizing soil and preventing erosion;
filter suspended solids, nutrients and toxic substances; moderate impacts of
stormwater runoff; and reduce noise disturbance and light intrusion. They can also
provide important habitat for wildlife.
The narrow size of buffers at this Site (about 50-60 feet from OHWM to the
proposed residence addition) and the limited filtering capacity of sandy soils limit
the extent to which the Mitigation Measures will filter pollution and sediments from
ongoing activity. This can include pollutants from hydrocarbons, heavy metals,
pesticides and fertilizer. Literature on buffer size indicate that buffers of 100 feet
may be necessary to consistently filter sediments and pollution that occur in
stormwater runoff (Wenger 1999, Mayer et al. 2005).
Precluding the use of pesticides, nutrients and other potential contaminants within
100 feet of the OHMW will limit the impact of these pollutants on nearshore critical
habitat. The literature also indicates that plantings can increase the effectiveness of
the buffer zone, or decrease the size needed to filter contaminants.
Because buffer zones serve several functions, it is important that the Mitigation
Measures that are implemented to offset significant impacts are successful.
Monitoring over an extended period of time provides the best assurance of
success. Monitoring success of erosion control measures during construction will
be carried out daily during construction.
Any evidence of erosion or sedimentation leaving the construction area (particularly
during or after storm events) will result in immediate action to block erosion and
sediments. Such siltation can be blocked through the use of additional silt fences,
straw bales, wattles, or temporary berms.
Monitoring the success of new native plants (as per the Planting Plan described in
Chapter 5.0) should be carried out and enforced by the County according to the
following schedule and performance standards:
• Following construction, the areas shown in the Planting Plan (Chapter
5.0) should be replanted.
WW 1562-EastQuilcene, R PT/081618/mas 26
The coverage of replanted native vegetation should remain at 90
percent of the original area planted. If monitoring indicates that viable
vegetation drops below this level in the planting areas, contingency
measures must be implemented. All monitoring should be based on
an "as -built" map and report prepared to show the plant locations and
documented by on-site photographs of the planted areas.
• The homeowners should have a monitoring report prepared by a
qualified professional following planting (As -built Documentation) and
updated as a Year 1 Monitoring Plan at the end of the first growing
season. Follow-up monitoring reports should be completed at the end
of the second through fifth full years after construction and
restoration. These reports should address the success of the
plantings.
Any plant mortality should be noted and corrected if plant survival
falls below 90 percent during the first three years. Documentation
should include any necessary corrective measures that include
supplemental planting to compensate for plant mortality and notation
of the apparent reasons for such mortality.
All reports should be submitted to Jefferson County for review and concurrence.
For this Plan to be successful, the County must monitor compliance with its
conditions. The failure of the County to monitor the implementation of the Plan may
lead to its ineffectiveness.
4.8 CONTINGENCY PLAN
A Contingency Plan should be followed if Mitigation Measures appear to be failing.
This Plan should address, in particular, any mortality of revegetated areas below
the 90 percent survival level at the end of each year. Should this level be exceeded,
the Contingency Plan should include an assessment of the reasons for failure by a
qualified botanical professional and the development of a plan for introducing plants
likely to be successful in the location where performance standards were not met.
WW1 562-EastQuilcene. RPT/081618/mas 27
5.0 ON-SITE AND BUFFER PLANTING PLAN
5.1 ON-SITE WETLAND
The Property contains a shoreline of Quilcene Bay; however, this shoreline is at a
distance of over 60 feet from the area proposed for development and is on the
landward side of the existing residence. The standard buffer in this area can be
reduced with approval by the County and approval of a Habitat Management Plan
since the lot is non -conforming. The 150 foot buffer zone occupies essentially the
entire developed portion of the Property. Typical plants found on the Site are listed
in Table 2.
5.2 BUFFER PLANTING AND RESTORATION PLAN
A Planting Plan as diagrammed in Figure 6 will be implemented to mitigate for the
disturbance of native vegetation in the buffer areas. Plantings have been proposed
to offset potential impacts based on the existing Site plan (shown in Figure 5). A
list of native plants that will be used for mitigation and restoration can be found in
Table 3. Revegetation and planting of additional vegetation will occur as an integral
part of the Project to compensate for environmental impacts caused by the ground -
disturbing activity.
Most of the area immediately adjacent to the location of the proposed residence
addition is a grass lawn area. New native grass -seed mixture should be used to
replant the construction area near where the house addition will be placed, upon
completion of those activities.
The three areas designated for additional plantings (to offset the house expansion
project) include;
• Planting Area A is an 8 foot by 120 foot area adjacent to and
landward of the existing Top of Bank (at the OHWM) on the western
shoreward side of the parcel. The area is presently covered by mixed
grass and forbs. This area should be planted with the mix of shrubs
and ground cover found in Table 3. Plants may be clustered so as to
leave a pathway to the beach as per County Code.
Planting Areas B (B-1 and B-2) are two approximately 8 foot by 50
foot areas that will be planted in the northern portion of the buffer
zone. This area is also presently vegetated by mixed grasses and
forbs; however, it is somewhat more sheltered from salt spray and
wind. This area should be planted with a mix of selected low shrubs
and groundcover (Table 3) plus a few small trees. These plants
should be planted in similar patterns as Area A.
WVVI 562-EastQuilcene. RPT1081618/mas 28
co co
T- e -
o o
N N
T �
C �
CL .�
E
0 0
U vii
�a
�ad
N 0
o'
C
4)
N
ai
c>
L
0