HomeMy WebLinkAboutFinal Buffer Restoration - PLN General - 7/7/2000 8r
MASON COUNTY c
FINAL BUFFER RESTORATION REPORT RECEIVED
WETLAND D AND STREAM CORRIDOR
J U L 14 2000
SITE LOCATION: MASON CO. PLANNING DEPT.
PLAT OF DETROIT #2
GRAPEVIEW, WA
PREPARED FOR:
GLEN JURGES
JURGES ENTERPRISES, INC.
2020 ENETAI BEACH
BREMERTON, WA 98310
PREPARED BY:
B&A, INC.
3303 43RD ST. NW
GIG HARBOR, WA 98335
253-858-7055 PHONE
253-858-2534 FAX
BA#3016
July 7, 2000
3303 43rd St. NW, P.O.Box 1337, Gig Harbor WA 98335 USA
253.858.7055 Fax 253.858.2534 ba@harbornet.com
EXECUTIVE SUMMARY
A Buffer Restoration Plan has been prepared following Guidelines
for Developing Fresh Water Wetlands, Mitigation Plans and
Proposals, publication number 94-29, March, 1994, US Army Corps
of Engineers, as appropriate. The buffer restoration plan will meet
county requirements for rescinding pertinent portions of the stop
wcrk order to al!ew revegetaticn to Legin. The "Gffer restcrat!cn plan
consists of mitigating for previous activities that disturbed the
wetland buffers. Four buffer areas, totaling 82,794 sq. ft., of which
72,650 are to be restored. The buffers are adjacent to a Wetland D.
According to the Washington State Rating System, the wetland is a
Category II wetland.
The goals and objectives are:
A. Restore wetland buffers
A.1 Amend the Solis to support plantings
A.2 Revegetate with native vegetation
A.3 Create wildlife habitat
B. Restore stream buffer
B.1 Amend soils to support plantings
B.2 Revegetate with native species
B.3 Create wildlife corridor
Performance standards shall be based on percent plant survival and
percent aerial coverage. At each of the monitoring visits and at the
end of the five year monitoring, there shall be an 90% survival rate of
planted species in the buffers. At the end of the five year monitoring
period there shall be 80% aerial coverage.
Standard cultural practices will be employed in restoring the wetland
buffers. The soils have been disturbed; topsoil will be applied and
tilled into the surface layer. Irrigation will be used to get the plants
established.
The buffer restoration will enhance the area over existing conditions.
TABLE OF CONTENTS
1.0 Introduction
2.0 Final Buffer Restoration Report
2.1 Executive Summary (See preceding page)
2.2 Project Description
2.2.1 Project Location
2.2.2 Responsible Parties
2.2.3 Description of Overall Project
2.2.4 Wetland Delineation for Buffer Restoration
2.3 EcoiG(g".icai Assessmment of inipact Jilt
2.3.1 Existing Vegetation
2.3.2 Existing Water Regime
2.3.3 Existing Soils
2.3.4 Existing Fauna
2.3.5 Functions and Values
2.3.6 Water Quality
2.3.7 Buffers
2.3.8 Wetland Rating
2.3.9 Position and Functions of Wetland in Landscape
2.4 Mitigation, Approach
2.4.1 Mitigaticr. Seyuerci^; 11,1ct Applicable)
2.4.2 Goals and Objectives
2.4.3 Performance Standards
2.5 Proposed Mitigation Site
2.5.1 Site Description (Not Applicable)
2.5.2 Ownership
2.5.3 Rationale for Choice
2.5.4 Ecological Assessment of Mitigation Site
2.5.5 Constraints
3.6 Final Site Plan
3.6.1 Site Survey/Topography
3.6.2 Water Regime
3.6.3 Soils
3.6.4 Landscape Plans
3.6.5 Construction Specifications
3.7 Monitoring Plan
3.7.1 Vegetation
3.7.2 Water Regime
3.7.3 Soils
3.7.4 Fauna
3.7.5 Development of Habitat Structure
3.7.6 Water Quality
3.7.7 Buffers
3.8 Site Protection
3.9 Maintenance and Contingency Plans
3.10 Implementation Schedule
3.10.1 Buffer Enhancement Schedule
3.10.2 Monitoring Schedule
3.10.3 Reporting Schedule
3.12 Additional Information for Preparation of Final Plans
4.0 As-Built Report
LIST OF FIGURES:
Figure 1: LOCA T iON MAP
Figure 2: U.S.G.S. MAP
r7 I fl n. Q1= ��q r�
;gore 3, „ ; - vt�r
Figure 4: BUFFER AREAS
Figure 5: USFWS CLASSIFICATION MAP
Figure 6: AREAS B AND D PLANTING PLAN
Figure 7: AREAS A AND C PLANTING PLAN
Figure 8: BUFFER SOILS BEFORE AND AFTER
Figure 9: CROSS SECTION OF PLANTING AREAS
Figure 10: SOIL LOGS
LIST OF TABLES
Table 1: PLANT MATERIALS
Table 2: PLANT MATERIALS COSTS
Table 3: BUFFER SEEDING MIXTURE
ATTACHMENT A. DELINEATION DATA SHEETS
ATTACHMENT B FIELD RATING FORMS
ATTACHMENT C SOIL LOGS
ATTACHMENT D MONITORING FORM
I
1 .0 Introduction
The following Final Buffer Restoration Plan has been prepared following
Guidelines for Developing Fresh Water Wetlands, Mitigation Plans and
Proposals, publication number 94-29, March, 1994, US Army Corps of
Engineers, as appropriate. The format for the report follows the Annotated
Outline as presented in the table of contents of the above referenced
publication. This report addresses restoration of the disturbed buffers.
2.0 Final Buffer Restoration Rencrt
2.1 Executive Summary (See preceding page)
2.2 Project Description
2.2.1 Project Location
• Project Name, Jurges Enterprises, Inc. of Plat of Detroit #2,
Grapeview Washington
• Location of the site is shown on Fiaure 1 , with latitude and
longitude. The wetlands extend off-site: Wetland A is
approximated at Y2 acre and Wetland D extends to the north and
east and is greater than 5 acres.
• The USGS National Wetland Inventory Map shows the watershed
(Figure 2).
• The site map shows the parcels, blocks, wetlands and buffers at a
scale of 1"=150' (Figure 3).
• National Wetland Inventory Map (Figure 2).
• Reference points for orientation in the field include existing roads,
culverts, and tree-lines.
2.2.2 Responsible Parties
Glen Jurges, PE
Jurges Enterprises, Inc.
2020 Enetai Beach
Bremerton, Washington 98310
360-377-0274
Consulting firm:
A. J. Bredberg
B&A, Inc.
3303 43 ST NW
Gig Harbor, Washington 98335
253-858-7055.
3016SRff/ajb/smh/7/13/00 1
2.2.3 Description of Overall Project
The buffer restoration project consists of correcting and/or improving
previous activities that disturbed the buffers.
Four areas are to be restored, Areas A, B, C and D (Figure 4). The
project will have a positive impact on wetland functions in these
areas. Buffer restoration will improve water quality through the
.t a� ,.. �i....,1 a� �, _ J 1-...rr_ TL-; —_,� -1
buffer will remove sediments prior to water entering the wetlands.
Water quality functions will be restored through buffer restoration.
Flood storage of the buffers will be enhanced over existing
conditions with the regrowth of vegetation retaining and detaining
more water than currently
Aquifer recharge and discharge of the buffers and wetlands will be
unimpacted as the buffers wetlands do not actively recharge an
aquifer as they are underlain by relatively impermeable materials.
The disturbed buffers do not serve as aquifer discharge zones as
they are not supplied water by springs or seeps.
Aesthetic, recreation and cultural value of the buffers will be
increased. Wetland D will have buffer enhancement as well as the
stream corridor in Blocks 58 and 59. The buffer enhancement plans
will increase the aesthetic value of the wetlands.
Fish and wildlife habitat of the buffers and wetlands will not be
impacted as there is no fish habitat associated with the wetlands or
buffers. There will be no change to the fish habitat function. The
value of the wildlife function will be increased through the
enhancement plantings of the wetland and stream buffers.
Stream flow maintenance functions will be improved over existing
conditions through the enhancement plantings. The plantings will
hold water for a slower release rate to the stream.
Economic functions of the wetland buffers will be will be unchanged
over existing conditions.
3016SRff/ajb/smhM13/00 2
Educational functions of the wetland buffers will be improved by the
proposed activities. The plantings will be an example of a successful
restoration of a degraded area.
2.2.4 Wetland Delineation for Buffer Restoration
A 24 inch by 36 inch base map at 100 scale is provided, showing
topography and the �rlet!and de!ineaticn. Figure 3 sl�cws the :.,e±lane
boundaries at 150 scale, while Figures 3A and 313 show the wetland
"cu day.zeS of fJ_t}Gr;c' . . -— .,..w-�.'- s !'!�..�,.. s , '2 .d -
boundaries. Please note that Wetlands B through D are all portions
of the same larger wetland basin.
Wetland boundaries were surveyed by a licensed land surveyor.
The wetlands were delineated using the 1997 Department of
Ecology Wetland Delineation Manual. The routine methodology was
used in the undisturbed areas, while disturbed site methodology was
used in those areas showing disturbance. Wetland boundaries were
flagged on the southern wetlands on November 10, 1998. Data
sheets are attached in Attachment A. Reference material used
included the National Wetland Inventory Map, 1995 aerial
photographs, and a map of the platted Blocks of the Plat of Detroit
#2.
2.3 Ecological Assessment of Impact Site
2.3.1 . Existing Vegetation
Based on the Cowardin Classification System, the off-site
portions of Wetlands A and D are palustrine forested wetlands.
The on-site portions of the wetlands have been logged, leaving
a palustrine scrub/shrub canopy. The portion of the large
wetland, labeled Wetland D, on the subject property contains
palustrine emergent wetlands. The stream segment on the
subject property is mapped by the National Wetland Inventory
Map as a riverine intermittent vegetative saturated seasonally
flooded stream. The on-site review verifies this as accurate.
Figure 5 is a sketch map showing the distribution of the
palustrine forested, palustrine scrub/shrub, palustrine
emergent and riverine plant communities. There was no
seasonal difference in the dominant plant communities.
3016SRff/ajb/smh/7/13/00 3
Relative abundance of the dominant and subdominant plants
in each community are outlined below.
Plant Populations
Wetland A
Trees Indicator Status Relative
abundance
NA/Astern r-d cedar PAr 5004,
Red alder FAC 40%
Black cottonwood FACW 10%
Shrubs
Salmonber FAC 50%
Hardhack FAC-W ' 50%
Emergent
Slough sedge OBL 100%
Plant Populations
Single large wetland comprising Wetlands B-D
Trees Indicator Status Relative abundance
Western red cedar FAC 50%
Red alder FAC 40%
Black cottonwood FACW 10%
Shrubs
Salmonber FAC 100%
Emergent
Cattails OBL 50%
Large fruited bulrush OBL 50%
The wetlands lack a large distribution of exotics.
Vegetation structure of adjacent upland plant communities and
those areas unlogged is a forested plant community. In the
logged undisturbed areas the plant community is scrub/shrub.
In those areas that have been cleared, the plant community is
emergent to bare.
3016SRff/ajb/smh/7/13/00 4
2.3.2 Existing Water Regime
Source of water for the buffers and wetlands is ambient rainfall
and groundwater running parallel to the dense basal till. The
rainfall either surface flows into the wetland or infiltrates the
ground and travels laterally across the dense basil till subsoil
where it emanates in the wetlands at the break of slope at the
edge of the wetlands.
Duration and frequency of inundation and/or saturation varies
with the wetland. Wetland A lacks saturation during the dry
summer months, while it is inundated during the winter rainy
season from late October until May. Wetland areas B, C, and
D are saturated throughout much of the year. Figure 2 shows
the watershed with the flow in a northeasterly direction.
The surface and subsurface water was measured in the
summer and winter months. Wetland D was saturated to the
surface in the summer months, and inundated with several
inches of water in the winter months. Wetland A had no
saturation in the summer but was saturated to the surface in
the winter months. Wetlands B and C were saturated within
12 inches in the summer months, and to the surface in the
winter months.
The seasonal stream has water most of the year. Water is
slowly released from a beaver pond off-site to the south.
The description of the monitoring involved digging an 18 inch
hole by hand and allowing water to equilibrate.
2.3.3 Existing Soils
The soil of the wetlands most closely matches that of the
Norma series. All of the wetlands tend to have a thick, dark
surface horizon (10YR 2/2 to 10YR 2/1) consisting of a silt
loam to very fine sandy loam. This overlays a dark grayish
gray brown (10YR 4/2) sandy loam B horizon. The structure
of the surface horizon was a granular structure, while the B
horizon was massive. The permeability of the soils is
moderate to moderately slow. The organic content of the
3 016 S Rff/aj b/s m h/7/13/00
surface horizon approaches 5%, while the subsoil is less than
1% organic matter.
The exception to the above described soils is that the central
portion of Wetland D, which is an unnamed Muck soil. The
soil was a thick, dark black (10YR 2/1) mucky silt loam to a
depth of 16 inches or greater. This mucky soil had a massive
structure, moderate permeability and an organic content
approaching 10%. Soil sampling locations are shown on
Figures
The undisturbed uplands have soils generally matching the
Harstine series. These have a dark grayish brown (10YR 3/2)
surface about 6 inches thick underlain by a yellowish brown
(10 YR 4/3) B horizon over 18 inches thick.
The disturbed buffer areas have soils generally consisting of
about 24 inches of dark grayish brown (2.5Y 4/2) and light
olive brown (2.5Y 4/3) gravelly sandy loam.
2.3.4 Existing Fauna
The animal community using the wetlands and buffers is a
animal community typically found in the Pacific Northwest. It
should be noted that an eagle perch tree is located off-site to
the north above Block 44. Other wildlife using the site would
include red tailed hawk, deer, coyote, raccoon, black bear, and
other mammals typically found in the area. There is no
evidence of beaver use, past or present, on the site. In
addition to those mentioned, bird use includes common crow,
various water fowl, and a variety of songbirds. It is anticipated
that numerous amphibians would use the property, including
frogs and salamanders.
There is no evidence of fish use on the subject property.
2.3.5 Functions and Values
The Washington State Wetland Rating System was used to
classify the wetlands on the subject property. Wetlands B-D
are one large contiguous wetland rated as a Category 11
wetland. Wetland A is rated a Category III wetland. Wetland
category sheets are attached in Attachment B.
3016SRff/ajb/smh/7/13/00 6
Water Quality: The wetlands improve water quality in the
watershed by slowing, detaining, and filtering out sediments
and pollutants prior to discharge into the stream flowing in a
northeasterly direction.
Habitat for Plants and Animals: The wetlands function as
habitat for plants and animals by providing an undisturbed
corridor through the property. The wetlands are part of a
12rger system with contiguous `crested prcpe;ty c 3. ;ara=g c;
of timber land to the west. The smaller Wetland A has no
direct access corridor to the larger wetland as it is isolated by
Atwater Street to the north, Sixth Street to the west,
Grapeview Loop Road to the east, and single family
residences to the south.
As previously mentioned, an eagle perch tree is located in
Block 44 and is labeled as such on the map. There are no
other known priority wildlife species on the subject property.
There are no know priority habitats on the subiect property.
The subject property contains a riparian corridor through the
center. This includes wetland areas D and the mapped out
stream in Blocks 58 and 59. The stream has a direct
connection flowing in a northeasterly direction into the Puget
Sound.
Storing Flood Water and Reducing Peak Flows: The wetlands
function to detain water, thereby reducing peak flows and
minimizing the amount of flood water. The close proximity of
the wetlands and stream to the Puget Sound and relatively
small watershed supplying the stream minimize the potential
for flooding.
Ground Water Recharge and Discharge: The wetlands
provide a minimal amount of groundwater recharge as they
are underlain by dense basil till. The dense basil till is
relatively impermeable perching the water on top. The
wetlands are supplied by ambient rainfall seeping along the
dense basil till hardpan. The water daylights where it seeps
out at the toe of slope at the edge of the wetlands. The seeps
are not deep seated seeps as they tend to dry out in the
summer and do not provide year round flow.
3016SRff/ajb/smh/7/13/00 7
Recreation and Educational Opportunities: The recreation and
educational opportunities offered by the wetlands include
areas for bird watching, hunting, and hiking. The lack of open
water limits this function.
2.3.6 Water Quality
The restoration plantings will, over time, reshade the stream
decreasing the water '_emperatur
The enhanced buffers will provide a sink for suspended solids,
thereby removing sediments from the water. The buffers,
when revegetated will filter out suspended solids before
discharging the water to the wetlands.
Nutrients
The nutrient content of the water has not been measured.
Fecal coliform
Fecal coliform of the water should be low, as the watershed
lacks development. Furthermore, there is no livestock within
the watershed to supply fecal coliform. The only fecal coliform
is likely to source from the wildlife droppings.
Heavy metals in water and sediments
As the watershed is historically undeveloped in the past sixty
years, there should be a minimal amount of heavy metals in
the water and sediments. No sampling has been done to
verify this.
2.3.7 Buffers
The off-site buffer of Wetlands A, B and C are a mixed forest
of deciduous and conifer trees. The buffer contains western
red cedar, Douglas fir, and red alder. The diameter of breast
height (DBH) of the buffer is between 8 and 30 inches. The
undergrowth of the buffer is dense with a few snags, heavy
canopy coverage, and some downed woody debris. Figure 5
provides a map of the buffer areas and vegetation types.
Wetland D has a heavily forested buffer on Blocks 44 and 45
and portions of Block 55, similar to the off-site portion of
3016SRif/ajb/smhi7/13/00 8
Wetland A. The western buffer on Blocks 56 and 57, and to
the south of Wetland D have been cleared and graded. This
buffer is dominated by herbaceous vegetation and a replanting
of Douglas fir trees. To the south of Wetland D in Block 56, a
restoration planting has been made using red twig dogwood.
The buffer to the east of Block 56 and Wetland D is forested
and dominated by Douglas fir, portions of this buffer has been
eplanted.
T i 1e '. u vl e seasc11a! vrainage between v!ocks v(r a
59 has been cleared and replanted with Douglas fir. Many of
the plantings did not survive and need to be replanted.
2.3.8 Wetland Rating
According to the Washington State Rating System, Wetland A
is a Category III wetland and the single large wetland
comprising Wetlands B through D is a Category II wetland.
The data sheets are provided in Attachment B.
2.3.9 Position and Functions of Wetland in Landscape
The wetlands are classified according to the hydrogeomorphic
classification (Brinson, 1.993). Wetland A is a ground water
depression. Wetland A attenuates flooding by retaining water
and preventing it from reaching nearby streams. It does not
serve as a wildlife corridor between different regions of the
watershed as it is surrounded on all sides by clearings, streets,
or single family residences. It is not a part of a regional flyway
as it provides no habitat for migratory water fowl. Its regional
value for the improvement of water quality is low as it has low
flow through.
The large wetland that constitutes Wetlands B through D is
ground water slope wetlands at the outer edges and low
gradient non-alluvial riverine wetlands at the center of the
wetlands. Their role in attenuating flooding is high as the low
gradient non-alluvial riverine portion detains water and slows
the opportunity for flooding. However, keep in mind that the
stream is within a few hundred feet of discharging into the
Puget Sound, thereby flooding is a non-issue. The large
wetland is a corridor for wildlife between different regions of
the watershed as the wetland is a large forested area relatively
3016SRff/ajbismh/7/13/00 9
undisturbed leading to a large area of forest land to the west.
The wetland has low value in the forested area as a regional
flyway as the wetland is inaccessible due to the heavy growth
of forest. However, Wetland D has a small area of emergent
wetland that could be useful as a regional flyway. The
regional value for improvement of water quality is important as
the wetland is large, heavily vegetated and has slow flow
through. The slow flow through allows for removal of
sediments and maintenance of water quality.
The seasonal drainage through Blocks 58 and 59 is a low
gradient non-alluvial riverine wetland. It has low value for
attenuating flooding as it does not have a large area of flood
water storage. Once it is revegetated, it will act as a corridor
for wildlife between Wetland D and the wetland off-site to the
south. The wetland is small and narrow with a small amount
of standing water, providing minimal function as a regional
flyway. The wetland is narrower but provides some function
for water quality improvement as it is heavily vegetated and
has the opoortunity to remove sediments and oollutants.
2.4 Mitigation Approach
2.4.1 Mitigation Sequencing (Not Applicable)
2.4.2 Goals and Objectives of Buffer Restoration
A. Restore wetland buffers
A.1 Amend the soils to support plantings
A.2 Revegetate with native vegetation
A.3 Create wildlife habitat
B. Restore stream buffer
B.1 Amend soils to support plantings
B.2 Revegetate with native species
B.3 Create wildlife corridor
Approximately 72,650 square feet of buffer will be enhanced .
3016SRff/ajb/smni7/13/00 10
Area and Square Feet of Buffer to be Enhanced
Area Location Square Feet
A West side of Wetland D 26,150
B South side of Wetland D 10,100
C East side of Wetland D 20,400
D I Stream, both sides 16,000
The functions and values of the buffer will be restored. These
functions are as follows:
Water quality
The water quality function of the buffers will be enhanced and
restored with native plantings. The native plantings will create
a vegetated buffer not currently present that will remove
pollutants and sediments allowing clean water to flow into the
wetland.
Flood storage of the buffer will be enhanced over existing
conditions as the vegetaticn will absorb water to a greater
cxient than %Urgent i;0iiuiiiOilS.
Aquifer recharge and discharge of the buffer will be
unchanged over current conditions as there will be no mass
movement of earth; either by excavation or filling that will
expose or cover any seep or recharge area.
Aesthetic, recreation and cultural value of the buffer will be
enhanced and restored with native plantings. Current
conditions have a degraded buffer that has a low aesthetic,
recreation, and cultural value. As the restored buffer grows, it
will have an increase in aesthetic value and have greater
availability for recreation and culture.
Fish and Wildlife
The existing buffer has no value for fish, however, the wildlife
value has been degraded through activities in the buffer. The
proposed restoration of the buffer will restore the wildlife
habitat to predisturbed conditions over time.
3016SRff/ajb/smh/7/13/00 1 i
Stream Flow Maintenance
The buffers will detain water holding it longer into the season
and have slower discharge for stream flow maintenance. The
increase in this function will be minimal.
Economic
Whereas, the buffers will be dedicated as a Native Growth
Protection Area or other protective covenant, they will Le
removed from forest production. This will be a negative
,,.;RCf?'?IC „�,NCcIt '?R Lt..e t L ff2r. P"Siti ve c :C3 ,., ....,
buffer restoration will be non-tangible improvements to the
buffer and wetland.
Education
Currently, the disturbed buffers have little educational value,
as they do not support a regrowth of vegetation. The
restoration of the buffer will replant the vegetation, provide for
regrowth and potential for educational value.
2.4.3 Performance Standards
Objectives A. Restore wetland buffers in Areas A, B and C
A.1 Amend the soils to support plantings
The soils in the disturbed areas will be amended to
support plantings. Soil tests in the area will verify that
amendments have been properly placed.
A.2 Revegetate with native vegetation
Performance standards shall be based on percent plant
survival and percent aerial coverage. At each of the
monitoring visits and at the end of the five year
monitoring, there shall be an 90% survival rate of
planted species in the buffers. At the end of the five
year monitoring period there shall be 80% aerial
coverage.
3016SRff/ajb/smh/7/13/00 ;17
A.3 Create wildlife habitat
The enhanced buffers will be evaluated for use by
wildlife and regrowth for creation of wildlife habitat.
Visual observations shall be made and noted on the
monitoring forms.
B. Restore stream buffer Area D
B.1 Amend soils to �Upper; plantings
The soils in the disturbed areas will be amended to
support plantings. Soil tests in the area will verify that
amendments have been properly placed.
B.2 Revegetate with native species
Performance standards shall be based on percent plant
survival and percent aerial coverage. At each of the
monitoring visits and at the end of the five year
monitoring, there shall be an 90% survival rate of
planted species in the buffers. At the end of the five
year monitoring period there shall be 80% aerial
coverage.
B.3 Create wildlife corridor
The stream corridor will be evaluated to verify the use of
wildlife and the passage of wildlife between Wetland D
and the off-site wetland to the south.
2.5 Proposed Mitigation Site
2.5.1 . Site Description and Pertinent Location Information (Not Applicable)
2.5.2 Ownership
The property is currently owned by Glen Jurges, the applicant.
The applicant will be responsible for the site in perpetuity.
There are no water control structures associated with the
property.
3016SRff/ajb/smh/7/13/00 i 3
2.5.3 Rationale for Choice
The area west of Wetland D on Blocks 56 and 57 includes an
85-foot buffer from Wetland D. A large portion of this buffer
has been replanted and is currently regrowing as an effective
buffer. Those areas lacking regrowth will be planted per the
planting plan.
Rationale for Choice for Buffer Enhancement Areas
The areas for buffer enhancement are chosen as they are
adjacent to wetlands and streams and have been degraded
(Figure 4). The area west of Wetland D has been discussed
for wetland relocation. Due to the poor soil conditions
(Attachment C and Figure 10) the area is better suited for
buffer restoration than wetland mitigation.
2.5.4 Ecological Assessment of Mitigation Site
Adequate hydrology to support the buffer plantings will come
from supplemental waterings in the first few years until the
plants become established. Subsequent water will be ambient
rainfall.
Description of Experience With This Type of Mitigation
1 . This type of mitigation has been done before
2. The consultant has experience with this type of work
3. References for similar mitigations that have been
completed:
ARCO Site, Graham, Washington
Wal*Mart Store, Shelton, Washington
Senior Housing, Snohomish County, Washington
Lee Estates, Snohomish County, Washington
Exotic species including reed canarygrass, purple loose strife
will be controlled through hand-weeding and spot application
of herbicides.
Wetland functions at the site after all performance standards
have been met are as follows:
30 1 6SRff/ajb/smh/7/13/00 14
Water Quality
The buffers will receive surface runoff from the surrounding
uplands. The buffers will have adequate vegetative growth
such that it will remove sediments and pollutants from road
runoff.
Flood Storage
The restored buffers will be vegetated to provide flood storage
functions above and beyond existing conditions.
Aquifer Recharge and Discharge
The area will have minimal aquifer recharge as it is underlain
by dense basil till hardpan. The area will have a slight
discharge as the water flowing parallel to the dense basil till
hardpan will daylight into the wetland at the edge of the buffer.
Aesthetic, Recreation, and Cultural Value
The area will have improved functions for this value as it will
grow into a forested buffer with a diverse canopy of
scrub/shrub and forested plant community.
Fish and Wildlife
The wildlife habitat of the restored buffer will function as a
diverse habitat providing food source and nesting cover. The
fish habitat will be minimal, however, there will be water quality
benefits for the downstream discharge to Puget Sound.
Stream Flow Maintenance
The buffer will retain water to a greater extent than it presently
does and release it slowly to the stream.
Economic
The economic value of the buffer will consist only of non-
tangible increases. The non-tangible increase will have to do
with the other functional values that have been increased over
existing conditions.
Education
Educational value of the restored buffer will be high as it is an
example of a replacement area for disturbed buffer sites.
3016SRff/ajbismh/7/13/00 15
Buffers of the proposed restoration area includes existing wetlands
and buffers as shown on Figure 3. There will 85-foot buffers from
Wetland D and 25 foot buffers along the seasonal stream corridor.
Land use of the proposed area adjacent to the restoration site will be
the construction of streets and establishment of single family
residential or recreational lots.
Based on experience from previous projects, this project will be
t ��GsFLI in restoring de=:?ded buffers.
2.5.5 Constraints
Constraints outside the owner's control that might affect the
restoration site include:
There may be a heavy invasion of exotic species to be controlled.
Whereas, the site has already been logged for most of the buffer, the
only area that could potentially be logged is north of the restoration
areas.
There are no other constraints that would interfere with the
construction and maintenance in perpetuity of the buffer restoration
areas.
3.6 Final Site Plan
• A final site plan for buffer enhancement and restoration is provided in
Figures 4, 6 and 7.
• There will be no change in topography for the buffer enhancement
areas.
• There will be no culverts, hydraulic controls, utilities or roads in the
buffers.
• On-site wetland boundaries are the same before and after restoration.
• On-site flood plain and OHWM are not applicable.
• Figures 4, 6 and 7 have the orientation and scale.
3016SRff/ajb/smh/7/13/00 i b
• Benchmarks are the existing culverts.
• Location of soil borings is shown on Figure 10.
• Topsoil will be stockpiled outside the buffer areas.
• There are no structures in the buffers.
• Sampling stations will be shown on the as-built plans.
• Adjoining land uses are development of single family lots and
undeveloped forest.
• Buffer areas are shown.
• There will be no hydrologic structures for the buffer restoration.
• Figure 8 shows the soils before and after soil amendments have been
applied and incorporated in the buffer area.
• Schematic drawing of proposed vegetation distribution structure is
provided for the buffer enhancement areas in Figures 6 and 7.
• Changes in habitat attributes will be an improvement over existing
conditions as the buffers will be enhanced.
• Location of existing and proposed buffers is shown on Figure 4 for
Wetland D and the seasonal stream corridor.
• Cross-section drawings showing relationship of hydrology, topography
and vegetation is provided in Figure 9.
• Methods for meeting the objectives for the restoration of the buffer for
Wetland D involves establishment of native vegetation in disturbed
buffer areas. This involves amending the soils with topsoil to support
the new plantings. The revegetation will be with native plants that will
increase the wildlife habitat in a natural manner.
• The methods to meet the objectives of restoring the seasonal stream
buffer are similar to that of the restoration of the Wetland D buffer. The
soils will be amended with topsoil to provide a media for the growth of
3016SRtf/ajbismh/7/13/00 i
the native plantings. The buffer will be vegetated with native species.
The revegetation of the stream buffer will create a wildlife corridor.
3.6.2 Water Regime
There will be no hydrologic structures for the buffer restoration.
The water• regime and flew through rate of the buffer are not applicable.
3.6.3 Soils
Figure 8 shows the soils before and after soil amendments have been
applied and incorporated in the buffer area.
The soils do not contain any foreign material. The soils have been graded,
exposing and mixing of the subsoil.
Soil characteristics generally match those of the Harstine series.
3.6.4 Landscape Plans
Schematic drawing of proposed vegetation distribution structure is provided
for the buffer enhancement areas in Figures 6 and 7.
Other details to assure success include:
• Changes in habitat attributes will be an improvement over existing
conditions as the buffers will be enhanced.
• Location of existing and proposed buffers is shown on Figure 4 for
Wetland D and the seasonal stream corridor.
• Cross-section drawings showing relationship of hydrology,
topography and vegetation is provided in Figure 9.
• Methods for meeting the objectives for the restoration of the buffer
for Wetland D will involve establishment of native vegetation in
disturbed buffer areas. This will involve amending the soils with
topsoil to support the new plantings. The revegetation will be with
native plants that will increase the wildlife habitat in a natural
manner.
3016SRff/ajb/smh/7/13/00 Is
• The methods to meet the objectives of restoring the seasonal stream
buffer are similar to that of the restoration of the Wetland D buffer.
The soils will be amended with topsoil to provide a media for the
growth of the native plantings. The buffer will be vegetated with
native species. The revegetation of the seasonal stream buffer will
create a wildlife corridor.
• Plant distribution and spacing is on Figures 6 and 7.
• Tables 1 and 2 show type and cost of plant materials.
• Other planting details are as follows
Standard Project Requirements
1 . Sedimentation control measures will be instituted prior to,
during, and after construction to prevent erosion or
sediment problems.
2. Native species will be used for all new plantings.
3. An As-Built report will be prepared after the planting has
been completed to verify that it has been done according to
plans.
4. Monitoring plans on a yearly basis will be provided to
Mason County Planning Department.
5. Performance/maintenance assurance devices will be
provided per the requirements of Mason County.
• Planting Plan
The Planting Plan shows plant locations and spacing.
Table 1 lists the species, quantities, sizes, and spacing.
All plant materials will be from approved sources. Bare
areas will be overseeded with a standard mixture.
3016SRff/ajb/smhi7/13/00 19
• Materials
1 . Plants shall be free of disease, insects, insect eggs, larvae,
weeds, weed seed, and other pests.
2. Plants shall be first quality with normal roots, trunks, limbs,
sterns and shape, and labeled with genus, species and
variety. The owners' representative has the right to reject
ncn-c:;nfcr ,ing plants.
3. The transplanted materials will be maintained and
monitored.
4. Suitable substitutions may be made due to availability,
price, and condition of the plants only with county approval.
• Planting and Seeding
1 . All plants will be pruned to remove dead and diseased
branches prior to planting.
2. The choice of plants should provide a combination of
benefits to the wildlife habitat and benefits to the urban
landscape environment.
3. The plantings should be made between October and April.
4. Plantings should be made following standard practices.
5. Plants are to be placed in a natural orientation per the
planting plan after major site work has been completed.
6. When all work has been completed the owner's
representative will inspect the work and grant acceptance.
The plant warranty will become effective at this time for a
period of one year. The contractor will be responsible for
maintaining the area by weeding, watering, and replacing
unhealthy plants.
7. This plan should be used in conjunction with the
accompanying report by B&A, Inc. The liability by B&A,
3016SRff/ajb/smh/7/13/00 20
Inc. is limited to the payment received for preparing the
final mitigation plan.
8. The plantings will be performed by a firm or individual
experienced with nursery and/or landscape work and all
stock will be from approved sources.
9. Plants shall be bare rcct, gallon container cr other available
media matching specified size.
10. The buffer seeding (Table 3), or similar, mixture shall
be used
11 . Deer resistant plants, structures and sprays will be used
• Exotic plants will be controlled by hand weeding and spot spraying.
Chemicals will not be broadcast.
• Erosion control and bank stabilization will be done followina Best
Management Practices (BMP). This will include a combination of
seeding slopes, mulching and vegetating.
• There is no grading proposed.
• Irrigation
. Irrigation will be via well water or gravity system
2. Method will be a sprinkler or drip system
3. Frequency will be -on a weekly basis during the dry months cf
the summer when rain has not fallen.
4. Water will be applied in one inch increments
• Weeding will be performed at the monthly service visits.
• Soil amendments, mulch and topsoil, will be from approved sources.
• Cross section drawings of water levels is not applicable to the buffer.
3016SRff/ajb/smh/7/13/00 �i
3.6.5 Construction Specifications
Landscape contractor's responsibilities
Ensure 90% survival throughout the monitoring period
Control invasive and exotic species
Provide supplemental water to ensure survival
Add soil amendments per the above specifications
Sources of :
Plant materials will be from licensed nurseries
Soil amendments will be from off-site
Fertilizers will be from a local retailer or wholesaler
Habitat structures will be from on-site
3.7 Monitoring Plan (Same as Section 2.7 in Publication #94-29)
Variables to be measured:
Wetland Buffer
Soils as to amount of amendments
Percent survival of plantings
Use of area by wildlife
Stream Buffer Restoration
Soil horizon as to amendments
Percent survival of plantings
Use of corridor by wildlife
Sampling methods for each of the variables are as follows:
Soils will be sampled using a hand shovel and digging an 18
inch hole to verify the placement of amendments and the
proper horizonation of the soils.
3016S Rff/ajb/smh/7/13/00
Vegetation success will be based on 90% survival. The
sampling method used will involve establishing permanent
20x20 foot plots; one in each of the buffer areas.
Use of wildlife will be verified by observing activities of wildlife
within the wetland buffer and wildlife corridor along the stream.
Observing the presence of tracks, feeding habits, and other
activities of wildlife will verify this variable.
Sampling and monitoring sched;:le:
As-built report November, 2000
Evaluate survival of species June, 2001
Verify survivability of plantings September, 2001
Verify plant survivability June, 2002
Verify survivability of plantings September, 2002
Verify survivability of plantings June, 2003
Verify survivability of plantings September, 2003
Verify survivability of plantings June, 2004
Verify survivability of plantings September, 2004
j Verify survivability of plantings I June, 2005
Final buffer enhancement sampling September, 2005
Sampling locations:
Sampling locations for each variable will occur in the
designated sample plots in each of the areas. One 20x20 foot
plot will be established in each of the buffer areas, A through
D. The as-built report show the sampling plot locations.
No laboratory methods will be used.
Clearly identifiable markers on the ground wiil act as reference points
for orientation to establish sampling locations.
The monitoring will be prepared by B&A, Inc., 3303 43rd Street NW,
Gig Harbor, Washington 98335.
3.7.1 Vegetation
Vegetation monitoring will be done to measure the success of
plantings and recolonization both in the buffers. Vegetation
monitoring will be performed on 20x20 foot sample plots and total
plant counts will be made. Vegetation monitoring will be per the
3016SRff/ajb/smh/7/13/00
monitoring form (Attachment D). The various strata will be
monitored for the number of plants planted, plant condition, percent
cover, and percent survival. All desirable volunteers will be noted.
Included will be a count of invasive exotics, percent cover, and
method of control.
3.7.2 Water regime
The water regime in the buffer restoration areas will not be
monitcred.
3.7.3 Soils
Soils will be inspected after amendments have been added to
ensure proper incorporation and preparation. Soil monitoring will be
performed at the initial site visit and noted as part of the as-built
report.
3.7.4 Fauna
The monitoring form provides space for comments on wildlife
observed (Attachment D). A visual observation will be made of bird
and mammal populations and use by birds and mammals of the
sites.
3.7.5 Development of Habitat Structure
The monitoring of the development habitat structure will be included
in the comments section of the monitoring form. The enhancement
of the buffer and construction of the mitigation area will include the
placement of logs and stumps. The following items will be noted on
the monitoring form:
Tree structure in and around the wetland.
Density and size of snags, downed trees, and woody debris.
Canopy cover.
Number of structural levels and distribution.
Connection of mitigation area to aquatic and terrestrial
habitats and other open lands.
Description of adjacent land use and their impacts on the
mitigation site.
Presence of priority habitats.
3016SRff/ajb/smh/7/13/00 24
3.7.6 Water Quality
Water quality will not be monitored in this restoration plan as it has
not been an issue in the restoration area.
3.7.7 Buffers
One sample plot will be placed within each of the buffer areas.
3.8 Site Protection
The buffers and wetland areas will be placed under protective covenants
for protection in perpetuity. Conservation easements, deed restriction, or
other similar protective covenant will be placed on the wetlands and
buffers. Mason County will be relied upon for the preferred covenant to be
placed on the properties.
3.9 Maintenance and Contingency Plans
Maintenance of the property will be carried out by Robin Richie of
Madrona Point Landscaping. The maintenance schedule for the first year
shall be on a monthly basis, which will include inspection of the plantings
and irrigation system. Plant replacement, weeding, fertilization, erosion
control, plant protection, trash removal, and other activities will be
performed on an as needed basis, per the monthly inspection.
Maintenance will include the following:
No broadcast fertilizers or pesticides will be used
The success rate for the overall plantings will be monitored and
replanting performed if necessary
Supplemental watering will be applied in the first year to stressed
plants
Exotic or invasive, undesirable vegetation, such as Himalayan
blackberry, reed canarygrass and Scot's broom shall be removed
from the planting area
3016SRff/ajb;smh/7/13/00 25
Maintenance recommendations will be determined at the monitoring
site visits
Initiating Procedures:
If a performance standard is not met within the time specified, the
mitigation plan and report shall be prepared analyzing the cause of
the failure, prcpose corrective actions and present a time frame for
implementing these actions. Minor corrective measures will be
as part of the rcutire mairterar.re and will only to idn^t;fed
in the monitoring reports. Any problems will be reported in a timely
manner, within two weeks of observance of the deficiency.
Responsible parties:
A.J. Bredberg of B&A, Incorporated, 3303 43rd Street NW,
Gig Harbor, (253) 858-7055, and Robin Richie of Madrona
Point Landscaping, will be responsible for implementing and
monitoring contingency procedures.
3.10 Implementation Schedule
3.10.1 Buffer Enhancement Schedule
Approval of buffer enhancement plan and lifting of August, 2000
moratorium of activities on the property
Soil amendments incorporated into buffer March, 2000 and
enhancement area and plantings made September, 2000
As-built report prepared October, 2000
3.10.2 Monitoring Schedule
See section 3.7
3.10.3 Reporting Schedule
As-built report showing spring, 2000 plantings October, 2000
Summer monitoring report July, 2001
Fall monitoring report September, 2001
Summer monitoring report July, 2002
Fall monitoring report September, 2002
Summer monitoring report July, 2003
Fall monitoring report September, 2003
3016SRff/ajb/smhi7/13/00 26
Summer monitoring report July, 2004
Fall monitoring report September, 2004
Summer monitoring report July, 2005
Fall monitoring report September, 2005
3.12 Additional Information
Soil Preparation, Buffer Enhancement Area
Whereas. the buffer enhancement area has had the topsoil removed
and we are dealing with a highly disturbed and degraded soil, it is
proposed that 4 inches of topsoil be incorporated to provide a
suitable planting medium.
4.0 As-Built Report
An as-built report will be sent to the lead agency within a month of
construction and planting completion. This will be November, 2000, for the
buffer enhancement restoration. The as-built report will contain:
„S-built topography
Photographs of established wetland taken from permanent reference
points of the permanent field plots
As-built plan of actual plantings, including density, size, source and
time of planting
Highlight any changes to the plan that occur during construction
Habitat features actually installed and their locations
Locations of sample plots
The site will be inspected by a biologist to ensure compliance with the plan
specifications during the construction and completion of construction. All
goals and objectives of the design plan will be reviewed and verified when
checking the completely work.
If there are any changes to the plan, minor changes will be documented
and reviewed. Major changes will require an amendment to the mitigation
plan or approval by the agencies. Changes will be noted on the original
construction so they will be easy to verify.
3016SRff/aJb/smh/7/13/00 /'7
TABLE 1: BUFFER RESTORATION PLANT MATERIALS
Genus species (Common Name) Symbol Used Size Spacing
TREES
Acer macro h Ilum Bi leaf maple) BM 37 1-4' 12'
Thuia nlicata Western red cedar) RC 42 1-4' 12'
Pseudotsu a menziesii(Douglas fir DF 167 1-4' 12'
Tsuga heterophylla(Western hemlock) WH 37 1-4' 12'
Po ulus trichoca a Black Cottonwood) BC 46 Whips 12'
SAPLINGS
Cornus stolonifera(Red-osier dogwood) RD 19 1-4' 6'
Salizsp. (Willow sp.) WI 37 1-4' 6'
Acercircinatum Vine maple) VM 28 1-4' 6'
SHRUBS
Ribes triste Red currant WR 9 1-4' 4'
Corylus cornuta Hazelnut HN 9 1-4' 4'
Physocarpus ca itatus inebark NB 19 1-4' 4'
Rosa ru osa Ru osa rose RR 28 1-4' 4'
Holodiscus discolor Oceanspray) OS 9 1-4' 4'
Rubus s ectabMs (Salmonbe ) SB 2° 1-4' 4'
Sambucus racemosa Red elder RE 9 1-4' 4'
S m horica os albus Snowbe SN 9 1-4' 4'
LOG LO AS
STUMP ST NEED
3016SRff/ajb/smh/7/13/00 28
TABLE 2: WETLAND BUFFER PLANTING COSTS
Genus species(Common Name) Symbol Used Cost Total
TREES
Acer macro h llum Bi leaf maple) BM 37 2.50 92.50
Thu'a plicata Western red cedar RC 42 2.50 105.00
Pseudotsu a menziesii(Douglas fir DF 167 2.50 417.50
Tsuga heterophylla(Western hemlock) WH 37 2.50 92.50
Po ulus trichoca a Black Cottonwood BC 46 1 1.00 46.00
SAPLINGS
Cornus stolonifera(Red-osier dogwood) RD 19 2.50 47.50
Salix sp. (Willow sp.) WI 37 2.50 92.50
Acer circinatum Vine maple) VM 28 2.50 70.00
SHRUBS
Ribes triste Red currant WR 9 2.50 22.50
Corylus cornuta Hazelnut HN 9 2.50 22.50
Physocarpus ca itatus inebark NB 19 2.50 47.50
Rosa ru osa Ru osa rose RR 28 2.50 70.00
Holodiscus discolor Oceanspray) OS 9 2.50 22.50
Rubus s ec°abil.'s Salmonberrm) SB ^_8 2.f0 70.00
Sambucus racemosa Red elder RE 9 2.50 22.50
S m horicar os albus Snowbe SN 9 2.50 22.50
LOG LO NC 00
STUMP ST NC 00
TOTAL plants 533 cost $1,263.50
3016SRff/ajb/smh/7/13/00 29
TABLE 3: BUFFER SEEDING MIXTURE
Upland Buffer planting mixture to be applied at 120 lbs./acre
Wetlands Seed Proportions Percent Percent
Mixtures By Weight Purity Germination
Chewings fescue 60% 96 90
(Festuca Rubra Commutata)
(Jamestown, Banner, Shadow
or Koket) 40% 97 80
White dutch clover
(Trifolium Repens) 10% 96 90
* Time of Planting-During the time period between April 1 through June 30 and September 1 through
October 31.
(Note: If planting between July 1 and August 31, irrigation
may be required. If planting between November 1 and
March 31, mulching will be required immediately after planting.)
* Site Preparation-Before seeding, install needed surface runoff control measures such as gradient
terraces, interceptor dike/swales, level spreaders and sediment basins.
* Seedbed Preparation-The seedbed should be firm,but not compact,with a fairly line surface
following surface roughening. Surface roughening should be done at right angles to the slope and
preferably"cat walked" up slope.
* Fertilization-As per supplier's recommendations. Developments adjacent to water bodies and
wetlands must use non-phosphorus fertilizer
* Seeding-Apply the following mixture to the prepared seed bed at a rate of 1201bs/acre.
* "Hydroseeding" applications with approved seed-mulch-fertilizer mixtures may also be used.
3016SRff/ajb/smh/7/13/00 30
Mag 13.00 � J U
Wed Feb 02 10:39 2000 3
Scale 1:31,250(at center)
200t i I
1000 Meters
Pond
oo
Cash Lake
Secondary SR,Road,Hwy Ramp
State Route
®Primary State Route Olympic Shore
Railroad /�1I
sl 1,- , 1
V Town,Small City I / " (�C=1C� Day
0 Geographic Feature Qnr��i Dnint
Locale
iCounty Boundary
73
I
i
N470 20.37' ,
W 122c 50.20' ,or
'il rd
3 Crapeview
i
Stretch Island
Stadium-4
M lane ove
FIGURE 1 : LAT. AND LON.
f
IV
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BPS
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47
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f' �
FIGURE 2 . U.S.G.S TOPOGRAPHY
WATERSHED MAP
JURGES/OLD DETROIT
B & A, iNC.
GIG HARBOR, WA 98335 BA# 3016
13 14 15
a/c BIC B/C C
- \ NI I I
�2.� END W5C
--- --T 1, -- ---' - "'d - -�— - SCALE
::Etl'SR•• Ali :s`i
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8
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swan, to the vast of the be Lnning \ _-.__ .._
there L • pp j;l' oono. oulwart
I of the •tresm the water lonl is 4 tL+f- Z In 4000
I hljhsr thsc+ the stream walerrlewl Le\put 404.7
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to to� i
out 4 Ls 469.9
,I ►—+ Peep �o�° C� I t'+ ,Ba�p•,�'
I I w ? W ! !n - I _ _ 1 1 a Lu 47X
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.55 _ 54- — h- 53
f.i 4 CRr)GAN -.
_ I I FIGURE 3 : SITE OVERVIEW MAP
�a8
1 1 `",9 JURGES/COLD DETROIT
B & A, INC.
GIG HARBOR, WA 98335 BA# 3016
-
'j -... :"` GILL' WOLD AV.1�,NUE
FIGURE 3A : WETLAND D MAP
NORTH 112
JURGEVOLD DETROIT
N B & Al INC.
SCALE GIG HARBOR, WA 98335 BA# 3016
1 " = 50'
I
co
1:11 80 1/ I.1
— — r
80 6
'$ 81
f %v 81 1 I
i� 80
l i
is 81 uz
1
�y 84. 64.4 911
13 84. 4 3�
a 82. 89 f
80.
82. 41 � 3�
80. 38
3 79. 55
/n 82. 49 3s 9. 06
I 3y 9. 73
8�1. 24
0 33 9. 79
�z 81. 81
EDGE 0
X 0 ^ � W�,�1 LANDS
C/ CAL. C I
!( 82. 4 7 I I
N
SCALE 82. 49
1 " = 50'
p�
?
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I
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19 I
80.30 1
j
9
I
79. 67
a i
90. 92
2i
8 a s 81. 04
� �
7
85. 88 FIGURE 3B : WETLAND D MAP
X90• 19 SOUTH 1/2
JURGES/OLD DETROIT
B & A, INC.
8 GIG HARBOR WA 98335
� BA- - # 3016
�g I
r
ST X7H
"ol
I Ob I O
�e x5 1 }
rr,
tij ~
II ��
C
f' -a j
.
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D Z FIGURE 3C: WETLANDS A, B & C MAP,
o m JURGES i
B & A, INC.
GIG HARBOR, WA 98335 BA#3016
t
: : : : : : : : . . . - EDGE OF. . . . . —
. .
WETLANDS --
yoosq. f.
_ 55
6.3,z 2 s9 fit• /.,�
. .;
Area p - � �•:•:�: :
SCALE
1 „ = 80'
FIGURE 4 : BUFFER AREAS
- = JURGES/OLD DETROIT
B & A, INC.
GIG HARBOR, WA 98335 BA# 3016
ReP re- sew� Af'✓e.
14Cex
�,000s . �f
SCALE tie es
1 " = 20' /
(Ja� 4jc�. ds 4r � v �� er
P �4.�fe Sa,•�, M,e� .QQ -,
Tck
� RoG �ti st.
s4 d
4�=
Area D; Stream plantings completed Summer of 1998,
To add Douglas fir plantings on each side of the corridor
To widen to 60 ft. Total area - 16,000 sq. ft.
FIGURE 6: AREAS B & D PLANTINGS
B & A, INC.
GIG HARBOR, WA 98335 BA#3016
SCALE Re p L Q ����� P l ✓
1 " = 20'
(r, ht�N\
vM w N 141-1 �..
RR !✓N 3
$,n PC RG
'I
Area A: Representative 3,400 sq. ft. of
buffer to be restored, total area to be
restored is 26,150 sq. ft. j
6A
Area C: Logged only, replanted to trees,
total area replanted is 20,400 sq. ft.
FIGURE 7 : AREAS A & C PLANTINGS
JURGES GRAPEVIEW SITE
B & A, INC.
GIG HARBOR, WA 98335 BA#3016
O
V
Io-ayj a.� c , ;. -7 Y� 3
J � J
10
�o
i
14 t 4'e r 17
10
G{ raue 1(�
� 0
r
FIGURE 8: BUFFER SOILS CROSS SECTION
JURGES GRAPEVIEW SITE
B & A, INC.
GIG HARBOR, WA 98335 BA#3016
i
8 S
i
D
n fi i
Sf �
�Ell
G1eS� Cd�e o t
Ln r
CJeS� Cf'o SS 52� �.0.�
sfrea�
FIGURE 9: PLANTINGS CROSS SECTION
JURGES GRAPEVIEW SITE
B & Al INC.
GIG HARBOR, WA 98335 BA#3016
„ 13 1 14 1 15
R;c 1 B/c
1110 � 155C ( i
2llf�kbx f# ^z' l ai►5v N el.
•._. E wia
40 MAPLE B -R27 Y, ECKLEM A VENUE
-TOE �ENn
I Y B10 �- I EN
_ R..
I I `B79 FIB EW8”
.930 i RI�1 T I E µU
Bh'S- I IB3 Iota. O EW2
-SS .SS I I_ 1I 24 I
1110 49037 I �F%I) M131 I
I
\ I /
2�3 �60 I
l_"'z
I �
j •B5 i
4
I •SS I P74 I
a36 Efit) I I
\R2
VERTICAL DATUM
\\WOODBRIDGE A VLN�l r E Bf ASSUMED 500 FEET AT N.E. CORNER BLOCK 59
I I I I I
gg �8 I w
18' cone. culvert
L e. In 405.0
le. out 404.20
i 1
there Is a ■wsmK to the west of the beginning 24' cono. culvert \
of the atreem. the water level Is 4 fL+f- L a In 460.0 \\\
higher than the stream water-lent le. out 404.7 \
I , I
I
I
i -
I --+
L: Imp
la. out 449.0
We
mp
Le. In 4713
rLf Ls. out 47P
i12' cons o n
- La m 4744
La out 4 0
�_- I12� YP 477.Mg IN 47&7 LR 0�EAGLE TREE _ _ T1
F.DCE OF IiETI.ANDS -
72"FIR
r�Yk ER
I I I ..'' EDG.fXR•,,
tr I 12` cm .
I I I I I 9s , b Ldch Le. In 4719
WAR
d h�CL to. out 4719
�A UCR
f _ i I I I I 9 1X T CLR
/ 414 I I I /
I 4 V3)) b Ldcn
I I - 5 / I I 9s �L 4: ; TOE/WETjCLR
Ili
I / ,4
9.
1s.foe �fiof.d
L/ EDC.CLR
nr,och
" r — — EDGE OF*
L —IfET7.A -CONGRES
I I - y s f I . �' I •I � �
5' I I ® 56 - I .. 5'S r fi.. 514 j --
I 5`' oo � m
- . mo
Cne90
_. ettt�
r.
- - ". CROGAN do D
r ! � z M po
P _I
1 n
-1 �a8 I 159 I to
I co m =1
Cn
n. ..... -.
y GR16 MOLD i, : ... = ... AVL;NUL;
,
RIB
of
TIt
J /;
/ , ; > r
� 'o PSSjC1 ► C.r i w /
If
IN
Pomih
C l •V o u ; ifif N
a 8
jo if
It
11 / �• p 0 '
It
17311
J
FIGURE 2 : U.S.G.S TOPOGRAPHY
I WATERSHED MAP
JURGES/OLD DETROIT �
& A, iNC.
GIG HARBOR, WA 98335 BA# 3016
13 14 15
c c-I N
"�2.1 ENO[ ! W5C
pf'^! ;F
•ii
t
t• : ii ii i ii
}!
11'i
1501
•. tt
'fFJC•.'
B � EWSF
I40 AMPLE �Il)E__-� .817 W I "Ellb 1 1iI1.l�EM AVENUE
---- 2�A. -
n�o 'ere aki?
B7q;d29 "d 9 tB8W
dl�l! EW1 I
'IBJn
"BhrQE B i 1 12 -
EW1 i
ss ss rs _ F
F t Wl l'
' I r 032 6 I
i-W
SS I i
I •BJ
1(4�BJ1g.15 J \
B 6 ENO
DATUM
WOODBRIDGE AVENUE, B� ASSUMED 500 FEETnATLN.E. CORNER BLOCK 59
I 1 f J \
r
I ti6 W 2;%; j w '3
I f ICI I �
II r� � j I I 18' oona oulrwrt
I I I I II& f L In 4 48
' them L • sw•u,p to the west of the be Rt• p�4 avl�wrt� _
of the •tre�m the rater lo�wl 4 lL+1 i \
f hiSbor Lhau the •brew water-leroL Lein 44A1.7
L om p f Y-
i
. m 4n4_�
to out 480.9
Pe ,j-
I 0 - ~ tap
La Ju
i �#t4a 1 — . to. out 4711 I
' \
� "lk" oona oJln
/ - Le. In 47I.4
1 I La. Due 4 1�
— '- 1IPI477AVfX �y 47&7
— —EAGLE TREE K EDGE OF WE71ANDS
72"'F'IR — —
•.. .. EOG.a
\ ! I I
r I
dh Le. out 4710
C�G1tR
4-14 1
-4t� I I � �
I I I I ' Iys.foeAe�.A l
� EOG.CIR\
WE ED
1
I � l
L — ANDS I '
..... _ 's
L
—I
55 f 64 _ i - 5
7.
CR' t GAN
FIGURE 3 : SITE OVERVIEW MAP
JURGES/COLD DETROIT
L I B & A, INC.
GIG HARBOR, WA 98335 BA# 3016
? ..43A71
.... .. ...... . n! GI-d WOLD AV.E.NIIE
.... !.1 ... .....
D/G 13 14 15
11 EN01 I N'SC II
jL3ii t I E115f1:. h:dJ.
eEl: SCALE
14E1t :� ,!!.•;� flag'. '�; t'14i^: %+"
1 150'
%D MAPLE - 027 I:)E �A _
, ..' t.. .... _..., _
_.. _
tDE _ E„ I�C �L.LM AVIJNUE
e
I EW4
I 9 B1„ /
U I gjJ I - EWl.. ..I.
E7i�QE 117r \ 12PA
I
7 fit
PALUSTRINE SCRUB/SHRUB
4
I
moo•-�".Y . 92
TNO I 4RIDGE AV1�;NIIE VERTICAL DA1t/M —
ASSUM D 500 FEET AT N.E. CORNER BLOCK 59
IIALUSTRINE FORESTED Q -
I
r r I W e, W
/f i I I 9 ,
I � 110
10• Cana. culvert
I La in 405.6
ls. out 404.201
then 4 e WOO to to the res 4 t of the be laalud t• uulvert \of the tire•.m the water lerol 4 IL coao
�— la IOO U \\hljhsr thou the stream water—lsret I. out 404.7
12 am
fp
le in 471,
3 .c PA`US�R�N r�prQ f • �- r, �� �� to au
rct ° °T �4
7 Pe vat" (iS�R/N f0amp �
I& Li
la out 4
O
S I I Rf's�;=t• Conn IIIMPI �u 4
rut 4
EAGLE TREE 47
� _
- - -- — -
72"FIR EUOE OF WETLr�NUS --- — - - -
T .�R 477. A0.7��_ o
ems- ,� I I •EOC.GYR
Cdch fY amp/ `-
I I :G• te. !a 4739
I
-cJ I �I I � I ,il te. out 47$0
�) � I I - 6�.`�R
I I I I > / I /]I ;,,4 b cn PI�LUS
_T n.El.�tR TRINE FORESTED
:,.
PALUSTRINt_ FOIiE I ED
EDG.CI R II � I •:
los
�Tl il-riA N I
pYdC4
ANDS
-CON GRES
I (� PALUS TRINE EMER G� - -
EN1-
I I i 1
1 11 ! I I 55 514 63
I i I � I •� I I , I _
_..... qu
... . F
-. ..
�- �• -.. CIz0 CAAN
- ?
a�S I 59
I RIV -RINF INTERMITTENT STREAK.11-_-
FIG I I I RE 5 : USFWS CLASSIFICATION
- I U
;J " "I I I_ "I JURGES/OLD DETROIT
l
B & A, INC.
' ' " GIG [IARBOR, WA 98335 BA# 3016