HomeMy WebLinkAboutS_MultipleProjeStreamStudyHabitatRpt_170329_v1
STANDARD STREAM STUDY NARRATIVE
AND HABITAT DATA REPORT
Multiple Projects
Renton, Washington
Prepared for:
The Boeing Company
Renton, Washington
Prepared by:
Amec Foster Wheeler
Environment & Infrastructure, Inc.
3500 188th Street SW, Suite 601
Lynnwood, Washington 98037
(425) 921-4000
March 2017
Project No. LY17160440
Amec Foster Wheeler
Project No. LY17160440 i
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TABLE OF CONTENTS
Page
1.0 INTRODUCTION ............................................................................................................ 1
1.1 EXISTING SEWAGE LIFT STATION REPLACEMENT ................................................... 1
1.2 GATE D-50 ENTRANCE MODIFICATION AND PEDESTRIAN PATHWAY ADDITION ........ 2
1.3 NEW FUEL SPILL CONTAINMENT AT APRON D ........................................................ 2
1.4 RENTON MUNICIPAL CODE 4-8-120C .................................................................... 3
2.0 STANDARD STREAM STUDY NARRATIVE ................................................................. 7
2.1 STREAM CLASSIFICATION ...................................................................................... 7
2.2 VEGETATIVE COVER ............................................................................................. 7
2.2.1 Existing Sewer Lift Station Replacement ................................................ 7
2.2.2 Gate D-50 Entrance Modification and Pedestrian Pathway Addition ...... 8
2.2.3 Apron D Fuel Spill Containment .............................................................. 9
2.3 ECOLOGICAL FUNCTION ...................................................................................... 11
2.4 FISH AND WILDLIFE ............................................................................................. 12
2.4.1 Mammals .............................................................................................. 12
2.4.2 Birds ...................................................................................................... 12
2.4.3 Amphibians and Reptiles ...................................................................... 12
2.4.4 Fish ....................................................................................................... 13
2.5 MEASURES TO PROTECT TREES AND VEGETATION .............................................. 15
2.6 NO NET LOSS OF ECOLOGICAL FUNCTION ........................................................... 15
3.0 HABITAT DATA REPORT ............................................................................................ 17
3.1 HABITAT DIVERSITY ............................................................................................ 17
3.2 MIGRATION CORRIDORS ..................................................................................... 18
3.3 SPECIES AND COVER TYPES ............................................................................... 18
3.4 IDENTIFICATION OF DISTURBED AREAS ................................................................ 19
3.5 EXISTING HABITAT VALUES AND FUNCTIONS ........................................................ 19
3.5.1 Temperature ......................................................................................... 20
3.5.2 Water Quality ........................................................................................ 20
3.5.3 Reach Sinuosity .................................................................................... 20
3.5.4 Vegetative Conditions ........................................................................... 21
3.5.5 Floodplain Condition ............................................................................. 21
3.5.6 Habitat Values and Functions at the Project Site .................................. 21
3.6 HABITAT ALTERATIONS AND IMPACTS AND PROPOSED HABITAT
MANAGEMENT PROGRAM .................................................................................... 21
4.0 REFERENCES ............................................................................................................. 23
TABLE OF CONTENTS
(Continued)
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TABLES
Table 1 Small Mammals Reported to Occur Along the Lower Cedar River
Table 2 Birds Reported to Occur Along the Lower Cedar River
Table 3 Non-Native Fish Species Introduced into the Lake Washington/Lake Union
System
Table 4 Different Aquatic Life Uses and Their Associated Numeric Temperature Criteria
FIGURES
Figure 1 Vicinity and Site Maps
Figure 2 Aerial Photo of Project Locations (in Red)
Figure 3 Bldg. 4-42 Sewage Life Station, Plan View
Figure 4 Gate D-50 Fencing and Barriers, Plan View
Figure 5 Gate D-50 Paving and Grading, Plan View
Figure 6 Gate D-50 Guard House Floor Plan, Plan View
Figure 7 Gate D-50 Guard House Exterior Elevations
Figure 8 Apron D Fuel Spill Containment Plan
APPENDICES
Appendix A Bldg. 4-42 Sewage Lift Station Photo Log
Appendix B Gate D-50 Photo Log
Appendix C Apron D Fuel Spill Containment Photo Log
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STANDARD STREAM STUDY NARRATIVE
AND HABITAT DATA REPORT
Multiple Projects
Renton, Washington
1.0 INTRODUCTION
As part of the Renton plant transition from the 737 next generation to the new 737 MAX program, The
Boeing Company (Boeing) proposes modifications and additions to three existing facilities: replacing a
sewage lift station that services Buildings 4-42, 4-41, and the west side of Building 4-40; modifying the
Gate D-50 entrance to add a pedestrian walkway; and adding a fuel-spill containment system at
Apron D. The sewage lift replacement project site and Apron D spill containment project site are
located on the eastern shore of the lower Cedar River (LCR) within the 200-foot shoreline setback
zone, while the Gate D-50 modification project site is located on the western shore of the LCR within
the 200-foot shoreline setback zone (Figures 1 and 2). The project areas consist primarily of flat,
impervious pavement and buildings used for manufacturing support or aircraft parking and are fenced
to prevent public access. Each of the three proposed tasks are described below.
1.1 EXISTING S EWAGE L IFT S TATION R EPLACEMENT
The scope of work for this task involves replacement of the Building 4-42 sewage lift station, which
serves Buildings 4-42, 4-41, and the west side of Building 4-20. The new lift station will be constructed
and readied to place on line. During an outage, the sewer pipes will be switched from the old lift
station to the new lift station without impacting the building operations. Design of the new lift station
will take into effect the need to keep the buildings operational except for the switchover. An existing
fire line will be rerouted for new lift station.
The scope of work includes installation of a new vault for collection of sewage, two new submersible
sewage pumps, controls, and piping. The existing 8-inch sewer line from Buildings 4-42 and 4-41 will
be rerouted to the new 8-foot sewage lift station vault. A 48-inch-diameter manhole will be installed to
collect the sewage upstream of the new vault. The 4-inch discharge line from the new sewage pumps
will be connected to the existing 4-inch sewage discharge line just south of the new lift station. The old
sewage lift station will be demolished and filled in after the new lift station is put into service. The
disturbed impervious surface will be approximately 1,900 square feet. No new impervious surface
area will be added as part of the proposed task, nor will any new lighting be installed as part of the
proposed task (Figure 3).
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The proposed task is expected to begin in July 2017 and to be completed by October 2017.
1.2 GATE D-50 E NTRANCE M ODIFICATION AND P EDESTRIAN P ATHWAY A DDITION
The scope of work for this proposed task will include:
Removal of a 24-foot automatic gate and 60 feet of existing fencing to create new opening;
Removal of asphalt and curbing;
Installation of 136 linear feet of new 7-foot-high fencing and a new 36-foot-wide double
swing gate;
Installation of one traffic control swing arm;
Replacement of approximately 3,280 square feet of existing asphalt;
Adding two new concrete bollards;
Installation of a new 3-foot by 7-foot exterior door, a 4-foot by 4-foot concrete landing,
metal stairs, and a 3-foot by 5-foot awning at existing guard house; and
Relocating two light fixtures 7-feet high on the existing guard house (the light fixtures will
be directed downward and away from the LCR).
The proposed task will not add any new impervious surfaces, but will only replace existing asphalt and
concrete surfaces that will be disturbed during the proposed (Figures 4 to 7).
The proposed task is expected to begin in July 2017 and to be completed by September 2017.
1.3 NEW F UEL S PILL C ONTAINMENT AT A PRON D
The proposed task will add a new fuel containment system to the Boeing Apron D, which is used for
737 aircraft stalls. The proposed task will include:
Replacement of a 72-inch storm drainage manhole with an 84-inch storm drainage
manhole;
Installation of two new 5,000-gallon fuel spill containment tanks;
Replacing 7 linear feet of existing 12-inch and 24-inch-diameter pipes; and
Replacing 840 square feet of existing asphalt pavement and 750 square feet of concrete
pavement for a total of 1,590 square feet total replaced pavement.
No new impervious surface area will be added as part of the proposed task, nor will any new lighting
be installed as part of the proposed task (Figure 8).
The proposed task is expected to begin in August 2017 and to be completed by December 2017.
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1.4 RENTON M UNICIPAL C ODE 4-8-120C
Under the Renton Municipal Code (RMC) 4-8-120C (Submittal Requirements – Specific to Application
Type: Land Use Applications), the City requires the following environmental reports to be included
with Boeing’s permit application submittal for the proposed project:
Stream or Lake Study, Standard: A report shall be prepared by a qualified biologist, unless
otherwise determined by the Administrator, and include the following information:
a. Site Map: Site map(s) indicating, at a scale no smaller than one inch equals twenty feet
(1" = 20') (unless otherwise approved by the Administrator of the Department of Community
and Economic Development or designee):
i. The entire parcel of land owned by the applicant, including one hundred feet (100') of the
abutting parcels through which the water body(ies) flow(s);
ii. The OHWM determined in the field by a qualified biologist pursuant to RMC 4-3-050L1b
(the OHWM must also be flagged in the field);
iii. Stream or lake classification, as recorded in the City of Renton Water Class Map in RMC
4-3-050Q4 or RMC 4-3-090 (if unclassified, see “Supplemental Stream or Lake Study”
below);
iv. Topography of the site and abutting lands in relation to the stream(s) and its/their
buffer(s) at contour intervals of two feet (2') where slopes are less than ten percent (10%),
and of five feet (5') where slopes are ten percent (10%) or greater;
v. One hundred (100) year floodplain and floodway boundaries, including one hundred feet
(100') of the abutting parcels through which the water body(ies) flow(s);
vi. Site drainage patterns, using arrows to indicate the direction of major drainage flow;
vii. Top view and typical cross-section views of the stream or lake bed, banks, and buffers
to scale;
viii. The vegetative cover of the entire site, including the stream or lake, banks, riparian
area, and/or abutting wetland areas, extending one hundred feet (100') upstream and
downstream from the property line. Include position, species, and size of all trees at least
ten inches (10") average diameter that are within one hundred feet (100') of the OHWM;
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ix. The location, width, depth, and length of all existing and proposed structures, roads,
stormwater management facilities, wastewater treatment and installations in relation to the
stream/lake and its/their buffer(s); and
x. Location of site access, ingress and egress.
b. Grading Plan: A grading plan prepared in accordance with RMC 4-8-120D7, and showing
contour intervals of two feet (2') where slopes are less than ten percent (10%), and of five feet
(5') where slopes are ten percent (10%) or greater.
c. Stream or Lake Assessment Narrative: A narrative report on eight and one-half inch (8.5")
by eleven inch (11") paper shall be prepared to accompany the site plan and describes:
i. The stream or lake classification as recorded in the City of Renton Water Class Map in
RMC 4-3-050Q4 or RMC 4-3-090;
ii. The vegetative cover of the site, including the stream or lake, banks, riparian area,
wetland areas, and flood hazard areas extending one hundred feet (100') upstream and
downstream from the property line, including the impacts of the proposal on the identified
vegetation;
iii. The ecological functions currently provided by the stream/lake and existing riparian area
and the impacts of the proposal on the identified ecological functions;
iv. Observed or reported fish and wildlife that make use of the area including, but not limited
to, salmonids, mammals, and bird nesting, breeding, and feeding/foraging areas, including
the impacts of the proposal on the identified fish and wildlife;
v. Measures to protect trees, as defined per RMC 4-11-200, and vegetation; and
vi. For shorelines regulated under RMC 4-3-090, Shoreline Master Program, the study shall
demonstrate if the proposal meets the criteria of no net loss of ecological functions as
described in RMC 4-3-090D2. If the proposal requires mitigation for substantial impacts to
the existing vegetation buffer in order to demonstrate no net loss of ecological functions, a
supplemental stream or lake study may be required by the Administrator of the Department
of Community and Economic Development or designee. (Ord. 5137, 4-25-2005; Ord. 5633,
10-24-2011).
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Habitat Data Report: Habitat data reports include:
a. Site Plan: The site plan shall indicate:
i. The vegetative cover types reflecting the general boundaries of the different plant
communities on the site;
ii. The exact locations and specifications for all activities associated with site development
including the type, extent and method of operations;
iii. Top view and typical cross-section views of critical habitat/wildlife habitat to scale;
iv. The results of searches of the Washington Department of Fish and Wildlife’s Natural
Heritage and Non-Game Data System databases;
v. The results of searches of the Washington Department of Fish and Wildlife Priority
Habitat and Species database.
b. Narrative Report: A narrative report shall be prepared to accompany the site plan which
describes:
i. The layers, diversity and variety of habitat found on the site;
ii. The location of any migration or movement corridors;
iii. The species typically associated with the cover types, including an identification of any
critical wildlife species that might be expected to be found;
iv. Identification of any areas that have been previously disturbed or degraded by human
activity or natural processes;
v. A summary of existing habitat functions and values, utilizing a habitat evaluation
procedure or methodology approved by the City;
vi. A summary of proposed habitat alterations and impacts and proposed habitat
management program. Potential impacts may include but are not limited to clearing of
vegetation, fragmentation of wildlife habitat, expected decrease in species diversity or
quantity, changes in water quality, increases in human intrusion, and impacts on wetlands
or water resources. (Ord. 4835, 3-27-2000)
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This report provides a description of the environmental and habitat attributes of the project site where
the proposed project is to occur, as defined by RMC 4-8-120C. Sections 2.0 and 3.0 present the
requisite information for the Standard Stream Narrative and Habitat Data Report, respectively.
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2.0 STANDARD STREAM STUDY NARRATIVE
This section presents the standard stream study narrative, providing information about existing habitat
conditions and functions of the lower Cedar River (LCR) adjacent to the proposed project site.
2.1 STREAM C LASSIFICATION
According to RMC 4-3-050Q4 (City of Renton Water Class Map), the LCR in the vicinity of the project
site is Class 1 water.
2.2 VEGETATIVE C OVER
Amec Foster Wheeler Environment & Infrastructure, Inc. (Amec Foster Wheeler) biologists, Jessica
Youngblood and Bob Stuart, conducted a site survey on March 23, 2017 to assess habitat conditions
and vegetative cover along the LCR shoreline adjacent to and within 100 feet upstream and
downstream of the proposed project sites. The project sites are defined as those areas within the 200-
foot shoreline zone adjacent to the LCR. The three project sites are currently used by Boeing to
support their 737 manufacturing program. The Boeing facilities on the east and west shorelines of the
LCR and the Renton Municipal Airport on the west shoreline of the LCR consist primarily of concrete
and asphalt surfaces.
2.2.1 Existing Sewer Lift Station Replacement
A vegetation survey was conducted along the east bank of the LCR along the City of Renton’s Cedar
River Trail Park, located just west of Boeing’s Bldg. 4-42. The park consists of a vegetated strip
immediately adjacent to the riparian area, a sidewalk, and roadway. The survey extended 300 feet
upstream and downstream from the proposed location of the new sewage lift station, which aligns with
the boat ramp on the LCR within the Cedar River Trail Park. The survey extended 300 feet north and
south of this point with photos being taken at 100-foot intervals. Photos were taken looking west,
north, and south at each point. In some instances, photos were taken looking downward at specific
plants. A photo log for this project area is presented in Appendix A. Figure A-1 in the photo log
provides an aerial image showing the locations where the photos were taken.
The project boundary on the Boeing property is located approximately 160 feet east of the eastern
bank of the LCR. The riparian area along the eastern bank of the river adjacent to and within 300 feet
upstream and downstream of the project site appears to have been landscaped with mix of native and
non-native vegetation. Invasive species such as Himalayan blackberry (Rubus armeniacus), reed
canarygrass (Phalaris arundinacea) (Appendix A, Photos 1, 2, and 10), and Scot’s broom (Cytisus
scoparius) (Appendix A, Photo 11) were observed at several locations along the eastern shoreline of
the LCR adjacent to the project site. Extending north of the boat launch, the shoreline vegetation
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consists of several tree species with diameters at breast height (DBH) greater than 10 inches. These
include red alder (Alnus rubra) (Appendix A, Photos 3, 5, 6, and 12), mature willow (Salix spp.)
(Appendix A, Photos 7, 8, and 9), shore pine (Pinus contorta var. contorta) (Appendix A, Photo 4), and
bigleaf maple (Acer macrophyllum) (Appendix A, Photo 13). A number of shrub species were also
observed including flowering currant (Ribes sanguineum) (Appendix A, Photo 6) and nootka rose
(Rosa nutkana) (Appendix A, Photo 11). Other unidentified shrub species were also observed
(Appendix A, Photo 5).
Much of the area between the project site and eastern shoreline of the LCR consisted of manicured
lawns and paved pedestrian pathways roadways (Appendix A, Photos 7, 8, and 9).
Portions of the eastern bank of the LCR within 300 feet north of the proposed project site consist of
timber pile and timber-lagging bulkhead, above which is located a steep bank approximately 20 feet
wide where the riparian vegetation occurs (Appendix A, Photo 10).
Fresh beaver activity was observed beyond 300 feet north of the boat ramp, just south of Boeing’s
North Bridge (Appendix A, Photos 14, 15, 16, and 17).
The east shoreline of the LCR south of the project site is similar to that north of the project site. The
narrow riparian zone is bordered to the east by manicured lawns and a paved pedestrian pathway and
roadway (Appendix A, Photos 19, 25, 27, 28, and 29). A number of large tree species that are greater
than 10 inches DBH occur south of the project site and include red alder (Appendix A, Photos 20 to
24), shore pine (Appendix A, Photos 18, 19, 20, and 29), and an unidentified poplar species
(Appendix A, Photos 19).
A number of shrubs occurred south of the project site including a long band of red osier dogwood
(Cornus sericea) located approximately 300 feet south of the project site (Appendix A, Photos 25 to
28) and flowering currant (Appendix A, Photo 22). A number of unidentified shrub species were also
observed along the riparian zone south of the project site (Appendix A, Photos 21 and 24).
2.2.2 Gate D-50 Entrance Modification and Pedestrian Pathway Addition
The Gate D-50 project site is located approximately 155 feet west of the west bank of the LCR and
approximately 4,600 feet south of the Bldg. 4-42 Sewage Lift Station project site and 480 feet north of
the Logan Avenue Bridge (Figure 2). A vegetation survey was conducted from the east bank of the
LCR adjacent to and extending 100 feet upstream and downstream of the project site. Appendix B
provides a photographic log depicting habitat conditions and vegetation along the riparian zone of the
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west bank of the LCR adjacent to the project site. Figure B-1 in the photo log provides an aerial image
showing the locations where the photos were taken.
The riparian zone along the west bank of the LCR adjacent to and 100 feet north and south of the
Gate D-50 project site is narrow (6 to 12 feet wide), consisting of a riprapped bank abutting an 8-foot-
high concrete flood-control wall confining the width of the riparian zone in this area of the river.
Riparian vegetation at the time of the survey was very sparse to non-existent, consisting of
unidentified grasses and weeds (Appendix B, Photos 1 to 10). A narrow band of small alder trees was
observed on the west bank of the LCR just beyond 100 feet south of the Gate D-50 project site
(Appendix A, Photo 7). No trees with trunks greater than or equal to 10 inches DBH are located within
100 feet of the project site on the west bank of the LCR.
2.2.3 Apron D Fuel Spill Containment
The Apron D Fuel Spill Containment project site is located approximately 80 feet east of the LCR, and
the northern boundary of the project site is located approximately 2,700 feet south of the Bldg. 4-42
Sewage Life Station project site. The Apron D project site is roughly 620 long and separated from the
east bank of the LCR by the Cedar River Trail Park (Figure 2).
A vegetation survey was conducted along the east bank of the LCR along the City of Renton’s Cedar
River Trail Park adjacent to the Apron D project site and 100 feet north and south of the project
boundaries. Photos were taken of the riparian vegetation at 100-foot intervals along the entire length
of the Apron D project site. Appendix C provides a photo log of shoreline photos taken adjacent to this
project site. Figure C-1 in the photo log provides an aerial image showing the locations where the
photos were taken.
Riparian vegetation along the east bank of the LCR adjacent to Apron D is separated from Apron D by
a paved pedestrian pathway surrounded by manicured lawns. At the northern boundary of the site
there is a hedge of Forsythia spp., as well as an unidentified poplar tree species (>10 inches DBH)
and unidentified shrubs (Appendix C, Photos 1 to 3). The vegetation at 100 feet north of the northern
boundary of Apron D is nearly identical (Appendix C, Photos 4 to 6).
The vegetation at 100 feet south of the northern boundary of Apron D is nearly identical to that
described in the above paragraph (Appendix C, Photos 7 to 9). Riparian vegetation adjacent to the
LCR at this location consists of ferns, unidentified shrub species, Forsythia spp., shore pine, and
unidentified tree species (Appendix C, Photos 10 to 12).
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Riparian vegetation adjacent to the LCR 200 feet south of the northern boundary of Apron D consists
manicured lawn, alder trees, willows (Salix spp.), shore pine (>10 inches DBH”), unidentified shrub
species, and blackberries (Appendix C, Photos 13 to 15). Vegetation closer to Apron D is similar to
that already described in areas north of this point.
Riparian vegetation adjacent to the LCR 300 feet south of the northern boundary of Apron D is nearly
identical to that described above at 200 feet south of the northern boundary of Apron D (Appendix C,
Photos 16 to 20).
At 400 feet south of the northern boundary of Apron D, there is a group of shore pines (>10 inches
DBH) immediately adjacent to the fence separating Apron D from the Cedar River Trail Park
(Appendix C, Photo 21). Shoreline vegetation at this location consists of manicured lawn, alder trees,
unidentified shrub species, and shore pine (>10 inches DBH) (Appendix C, Photos 22 to 24).
At 500 feet south of the northern boundary of Apron D, there are unidentified poplar tree species
(>10 inches DBH) and unidentified shrub species immediately adjacent to the fence separating
Apron D from the Cedar River Trail Park (Appendix C, Photo 25). Closer to the east bank of the LCR
shore pines (>10 inches DBH) dominate the shoreline vegetation with some small willow trees (Salix
spp.) and manicured lawn (Appendix C, Photos 26 to 28).
At 600 feet south of the northern boundary of Apron D, there are unidentified poplar tree species
(>10 inches DBH) and unidentified shrub species immediately adjacent to the fence separating
Apron D from the Cedar River Trail Park (Appendix C, Photos 29 and 30). Boeing’s South Bridge
dominates a portion of the shoreline at this location (Appendix C, Photos 59 and 60). Riparian
vegetation at this location consists of manicured lawn, shore pine (>10 inches DBH), some small
willows, alder, an unidentified poplar species, and ferns (Appendix C, Photos 30 and 31).
Beyond 600 feet south of the northern boundary of Apron D to the southern boundary of the Apron D
project site, the riparian zone is dominated by manicured lawn, alder trees (>10 inches DBH), shore
pine (>10 inches DBH), unidentified shrub species, and blackberries (Appendix C, Photos 32 to 35).
An unidentified poplar species and unidentified shrub species occur immediately adjacent to the
Apron D fence line (Appendix C, Photos 34 and 36).
At 100 feet south of the southern boundary of Apron D, vegetation immediately adjacent to the
Apron D fence line and east of the pedestrian pathway consists of manicured lawn, an unidentified
species of poplar tree (>10 inches DBH), unidentified shrub species, and shore pine (>10 inches
DBH) (Appendix C, Photos 37, 39, and 40). Riparian vegetation at this location consists of manicured
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lawn, an unidentified species of poplar tree, shore pine (>10 inches DBH), and blackberries
(Appendix C, Photos 38 to 40).
2.3 ECOLOGICAL F UNCTION
Riparian habitats have important ecological functions other than providing habitat for birds and other
wildlife. Healthy riparian vegetation protects banks from erosion, influences in-channel aquatic
habitats, maintains favorable water temperature for fish through shading, filters runoff, and provides
nutrients. Riparian vegetation creates meanders, increases habitat complexity, and can protect
against scour during severe storm events. Riparian habitats link upland and aquatic habitats. Upland
habitats have a critical role in watershed function and affect riparian and aquatic habitats, particularly
in drier, low-elevation sites.
The riparian zone along the east bank of the LCR adjacent to and within 100 feet upstream and
downstream of the two Boeing project sites located on the east side of the LCR is a relatively narrow
vegetated band consisting of trees, shrubs, and manicured lawn. A paved pedestrian trail occurs in
this area, as well. A number of invasive species also were observed, as discussed in Section 2.2,
above.
The riparian zone along the west bank of the LCR adjacent to and 100 feet upstream and downstream
of the Gate D-50 project site located on the west side of the LCR consists of almost no vegetation.
There are a few small alder and willow trees located more than 100 feet south of the proposed project
site and some unidentified grass species. The west bank in this area of the LCR consists primarily of
riprap and is separated from the Gate D-50 project site by an 8-foot-high concrete, flood-control wall.
The primary ecological functions provided by riparian vegetation along the east and west banks of the
LCR within 100 feet upstream and downstream of the project sites include:
Nesting and foraging habitat for birds and small mammals,
Input of terrestrial insects from overhanging vegetation,
Input of allochthonous organic matter (via leaf fall),
Limited erosion control, and
Limited habitat complexity.
The LCR is a manmade channel created in 1912 when the river was diverted as a tributary to the
former Black River directly to Lake Washington. The LCR is channelized and substantially altered, so
that there is very limited riparian area to provide all of the potential ecological functions of an
unaltered habitat. Riparian vegetation provides very little, if any, shading to the LCR because of the
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dominance of small shrubs and the lack of large trees. Both banks of the river in the project areas are
contained within levees and/or flood-control walls, so there is no potential for the creation of meanders
or off-channel habitat. Because of extensive development along both banks of the river in the project
area (Boeing to the east and west and the Renton Municipal Airport to the west), there is little, if any,
transition between riparian and upland habitats.
2.4 FISH AND W ILDLIFE
This section addresses fish and wildlife species that may use the LCR in the vicinity of the project site.
2.4.1 Mammals
No mammals were observed during the site visit; however, signs of recent beaver activity were noted
on the east bank just south of Boeing’s North Bridge (Appendix A, Photos 14, 15, 16, and 17). Given
the level of development in the project area, it is likely that, other than beaver, only small mammals
such as squirrels, mice, rats, voles, moles, raccoons, opossums, muskrats, and river otters use the
riparian areas along the LCR shoreline adjacent to and within 100 feet upstream and downstream of
the project areas. Richter and Azous (1997), conducting small-mammal surveys in a wetland along
the LCR, reported 13 species of mammals (Table 1). These, as well as other small mammals
common to the Puget lowlands, may occur along the LCR adjacent to the project site.
2.4.2 Birds
Several bird species were observed during the site visit, including American coot (Fulica Americana),
American crow (Corvus brachyrhynchos), American robin (Turdus migratorius), bald eagle (Haliaeetus
leucocephalus), an immature gull species (Larus spp.),dark-eyed junco (Junco hyemalis), European
starling (Sturnus vulgaris), mallard ducks (Anas platyrhynchos), red-breasted merganser (Mergus
serrator), and several unidentified songbird species. Richter and Azous (1997) conducted bird surveys
in a wetland of the LCR between late May and mid-June in 1988, 1989, 1991, 1992, and 1995 to
determine distribution and relative abundance. They reported 58 species of birds (Table 2). It is likely
that these, as well as other species of birds common to the Puget lowlands, nest or forage in the
project vicinity.
2.4.3 Amphibians and Reptiles
No amphibians or reptiles were observed during the site visits; however, it is likely that amphibian
(e.g., Anurans) and reptile species (e.g., turtles) found in the Lake Washington basin may use the
areas within the site vicinity. Richter and Azous (1997) reported the occurrence of six amphibian
species in the LCR:
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Ensatina (salamander) (Ensatina eschscholtzii),
Long-toed salamander (Ambystoma macrodactylus),
Northwestern salamander (A. gracile),
Pacific tree frog (Pseudoacris regilla),
Red-legged frog (Rana aurora), and
Western red-backed salamander (Plethodon vehiculum).
No information was located listing reptile species occurring along the LCR in the project vicinity;
however, reptiles listed for King County (King County, 2008) that could occur in the project vicinity
include:
Common garter snake (Thamnophis sirtalis),
Northern alligator lizard (Elgaria coerulea),
Northwestern garter snake (T. ordinoides),
Painted turtle (Chrysemys picta),
Rubber boa (Charina bottae),
Slider (Trachemys scripta),
Western fence lizard (Sceloporus occidentalis), and
Western terrestrial garter snake (T. elegans).
2.4.4 Fish
No fish were observed in the LCR adjacent to the project sites during the site visit. The Lake
Washington system, including the LCR adjacent to the project site, hosts many fish species, including
five salmonid species: Chinook salmon (Oncorhynchus tshawytscha), coho salmon (O. kisutch),
sockeye/kokanee salmon (O. nerka), coastal cutthroat trout (O. clarki clarki), and steelhead/rainbow
trout (O. mykiss). Anadromous forms of each of these species use the Cedar River system as
migratory, forage, nursery, and spawning habitat, so individuals are present in the river both as adults
during migrations to spawning grounds and as juveniles (Kerwin, 2001). All of these species occur
seasonally in the LCR adjacent to the project site. Additionally, there have been isolated reports of
coastal/Puget Sound bull trout (Salvelinus confluentus) occurring in the Lake Washington system;
however, it is believed that few bull trout occur in the Lake Washington system, if they occur at all.
Puget Sound Chinook salmon, Puget Sound steelhead trout, and bull trout are federally-listed species
under the Endangered Species Act.
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Nonanadromous forms of winter steelhead (rainbow trout), sockeye (kokanee), and cutthroat trout
may also occur in the LCR. Resident rainbow trout spend their entire life in the Lake Washington
system. The resident rainbow trout population was sustained with hatchery plants because they rarely
successfully reproduce in Water Resource Inventory Area 8; however, releases of hatchery rainbow
trout have been all but eliminated. Nonanadromous coastal cutthroat trout also occur in the Lake
Washington system and are much more abundant than the anadromous form. Kokanee salmon is the
freshwater, resident form of O. nerka. Some progeny from the parents of anadromous sockeye may
also remain in Lake Washington for all or a portion of their lives (resident/anadromous sockeye)
(Kerwin, 2001).
The largest single population of adfluvial bull trout in western Washington is found above Cedar Falls
in the upper Cedar River watershed. It is believed that a small number of bull trout pass through the
reservoir and downstream hydroelectric facilities to the river reaches below Cedar Falls. However, it is
apparently not sufficient to support the establishment of bull trout populations under the current
ecological conditions (Corps, 2002).
Native char, presumably bull trout, have been observed in the fish ladder viewing pool at the Hiram M.
Chittenden Locks as recently as 1997, while isolated reports of native char being caught in or around
Lake Washington occur every few years. A large juvenile char, again, presumably a bull trout
(~250 millimeter, 3 year old), was caught in the LCR in July 1998. An adult char was also caught in
the LCR in April of 1993 (Corps, 2002).
Based on this information, occurrence of bull trout in the LCR adjacent to the project site is expected
to be extremely limited, if they occur at all.
Fish exclusion surveys conducted by Amec Foster Wheeler biologists in June 2013 and June 2014 as
part of Boeing’s North Bridge Replacement project on the LCR identified juvenile Chinook and coho
salmon, as well as juvenile steelhead/rainbow trout. Other fish species identified during these surveys
included slimy sculpin (Cottus asper), three-spined stickleback (Gasterosteus aculeatus), and
ammocoetes of an unidentified lamprey species (Petromyzontidae).
Species endemic to the Lake Washington system include the northern pike minnow (Ptychocheilus
oregonensis), peamouth (Mylocheilus caurinus), sculpins (Cottus spp.), and longfin smelt (Spirinchus
thaleichthys) (Weitkamp et al., 2000; Wydoski and Whitney, 2003). Twenty-four non-native fish
species (Table 3) have been identified in the Lake Washington/Lake Union system. A number of these
species are now believed to be no longer present in the system. Some of these species are known to
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prey on juvenile salmon (e.g., smallmouth bass) while others are potential competitors with juvenile
salmonids for food (Kerwin, 2001).
2.5 MEASURES TO P ROTECT T REES AND V EGETATION
The proposed projects will be confined to the Boeing property and will not occur in areas with existing
trees or riparian vegetation. No direct or indirect impacts to riparian vegetation or trees will occur as a
result of the proposed projects; therefore, no measures to protect vegetation or trees have been
incorporated into the work plan.
2.6 NO N ET L OSS OF E COLOGICAL F UNCTION
The project will result in no net loss of ecological function in the riparian zone of the LCR adjacent to
and 100 feet upstream and downstream of the project sites. There will be no change in the area of
impervious surfaces within the shoreline zone.
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3.0 HABITAT DATA REPORT
The habitat data report, as required by the City of Renton and described in RMC 4-8-120C, will
provide pertinent habitat and ecological function information for the immediate project site where the
proposed project is to occur. Sections 3.1 through 3.6 of the report will discuss following:
The layers, diversity and variety of habitat found on the site;
The location of any migration or movement corridors;
The species typically associated with the cover types, including an identification of any
critical wildlife species that might be expected to be found;
Identification of any areas that have been previously disturbed or degraded by human
activity or natural processes;
A summary of existing habitat functions and values; and
A summary of proposed habitat alterations and impacts and proposed habitat
management program.
3.1 HABITAT D IVERSITY
The lower Cedar River (LCR) downstream of I-405 (approximately 1.6 miles) is an artificial channel
created early in the 20th century and is completely constrained between levees and revetments. This
reach was regularly dredged to prevent flooding from the time of its completion in 1912 until the
mid-1970s. Portions of the reach were again dredged in 1999 for the first time since the mid-1970s.
Flood-control dredging was conducted during the summer of 2016. In-stream habitat in the reach is
almost entirely glide, with little habitat complexity. Land uses prevent floodplain connectivity and have
eliminated the potential for re-connection with a natural floodplain or the establishment of a riparian
corridor. Channelization and existing land uses also prevent significant large woody debris from
accumulating in the channel. The reach is also very low-gradient and depositional, and the substrates
have high levels of fine sediments (Corps, 2004; Parametrix and Adolfson, 2010).
The shoreline along the LCR adjacent to the project site consists of developed property belonging to
Boeing and the City of Renton.
With realignment of the Cedar River into Lake Washington in 1912, the zone of sediment deposition
was localized through the City of Renton (Perkins, 1994). The vast majority, if not all, of the non-
suspendable sediment load is now deposited along this reach because Lake Washington lies at the
river’s mouth. With the path of the river fixed by armored banks, progressive infilling of the channel
resulted. Sediment is continually deposited in the downstream 2 miles of the river and in an enlarging
delta in Lake Washington.
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Aquatic habitat within the LCR adjacent to the project site consists of a low relief benthic habitat
composed of small cobbles with some gravel and no boulders. Large woody debris in the stretch of
the LCR adjacent to the project site is extremely limited (Appendix A, Photos 14 and 15). River
discharge at the time of the site visits in May and November 2014 was approximately 1,000 cubic feet
per second and 320 cubic feet per second during the May 2015 visit (USGS, 2017). Channelization of
the LCR has eliminated meanders within the lower river, such that the lower 1.6 miles of river consists
of a uniform glide habitat with a nearly complete absence of riffles and pools. Habitat diversity along
the LCR adjacent to the project site is extremely limited.
3.2 MIGRATION C ORRIDORS
A query of the Washington Department of Fish and Wildlife’s Priority Habitat and Species database
(http://wdfw.wa.gov/mapping/phs/) identified five salmonid species that use the LCR as a migration
corridor:
Chinook salmon;
Coho salmon;
Sockeye salmon;
Steelhead and rainbow trout; and
Coastal cutthroat trout.
Two of the above species, Puget Sound Chinook salmon and Puget Sound steelhead trout, are listed
as threatened under the Endangered Species Act.
Bull trout, a member of the char family, may also be found in the LCR and is also listed as threatened
under the Endangered Species Act. Population status information and extent of use of this area is
currently unknown. Adult and subadult size individuals have been observed infrequently in the LCR
(below Cedar Falls), Lake Washington, and at the Locks. No spawning activity or juvenile rearing has
been observed and no distinct spawning populations are known to exist in Lake Washington outside
of the upper Cedar River above Lake Chester Morse (not accessible to bull trout within Lake
Washington) (NOAA-Fisheries and USFWS, 2008). It is unlikely that bull trout use the Cedar River as
a migratory corridor.
3.3 SPECIES AND C OVER T YPES
The almost complete absence of riparian vegetation along the west bank of the LCR and the relatively
narrow zone of riparian vegetation along the east bank adjacent to the project sites and the highly
developed shorelines along both banks of the LCR severely limit habitat availability and use by
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multiple plant and animal species. The concrete flood-control wall on the west bank of the LCR
adjacent to the Gate D-50 project site severely limits the width of the riparian zone and eliminates the
transition zone from riparian to terrestrial habitats.
Typical plant and animal assemblages and associations that would be expected along the riparian
corridor of the LCR are, for the most part, very limited or absent along the stretch of the LCR adjacent
to the proposed project sites.
A query of the Washington Department of Natural Resources’ Natural Heritage Program online
database (http://www.dnr.wa.gov/ResearchScience/HowTo/ConservationRestoration/Pages/
amp_nh_data_order.aspx) did not identify any plant or terrestrial animal species of special concern in
the vicinity of the project site.
Critical wildlife species occurring at the project site include those salmonids identified in Section 2.4.4
above.
3.4 IDENTIFICATION OF D ISTURBED A REAS
The entire project area is highly developed and disturbed. As stated in Section 3.1, the lower 1.6 miles
of the LCR is an artificially-created channel with extensive development along both banks. The three
project sites are covered in asphalt and/or cement and have various structures, such as office
buildings and aircraft hangers.
3.5 EXISTING H ABITAT V ALUES AND F UNCTIONS
The LCR adjacent to the project site has very limited habitat value and is low functioning. A
combination of two habitat assessment methods was used to provide a qualitative assessment of the
existing habitat values and functions. These habitat assessment methods were the U.S.
Environmental Protection Agency’s (EPA’s) Rapid Bioassessment Protocols for Use in Wadeable
Streams and Rivers (Barbour et al., 1999) and the U.S. Forest Service’s Stream Inventory Handbook:
Levels I and II (USFS, 2010). Both methods incorporate the use of physicochemical and biological
parameters to assess habitat value and functionality. The EPA’s Rapid Bioassessment Protocols
incorporates both benthic invertebrate and fish assemblages’ data in evaluating habitat value and
function. For the purposes of this project, neither benthic invertebrate nor fish assemblage data were
collected as part of the evaluation process due to the necessity of applying for and receiving the
necessary permits to gather such data. The habitat assessment is based on physicochemical
conditions observed at the project site:
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Temperature,
Water quality,
Reach sinuosity,
Vegetative conditions of the stream banks and the riparian zone, and
Condition of the floodplain (e.g., accessibility from the bank, overflow, and size).
Each of the above parameters is discussed below.
3.5.1 Temperature
Mean monthly water temperatures in degrees Celsius in the LCR at Renton for the period of February
1992 through December 2016 (USGS, 2017) are as follows:
January – 6.1
February – 6.4
March – 7.6
April – 9.6
May – 11.6
June – 13.4
July – 15.7
August – 16.0
September – 13.7
October – 11.1
November – 8.2
December – 6.3
The warmest water temperatures occur during the months of June, July, August, and September;
however, even the highest mean monthly temperatures are compliant with Washington State aquatic
life temperature criteria (Table 4), with the exception of the char spawning and rearing beneficial use.
Char (e.g., bull trout) do not spawn in the LCR and it is highly unlikely that they use the LCR as
rearing habitat.
3.5.2 Water Quality
No site-specific water quality data were found for the project site; however, water quality monitoring
has been conducted in south Lake Washington by the Washington State Department of Ecology.
Washington State’s Water Quality Assessment (303[d] & 305[b] Report) (Ecology, 2012) identified
exceedances of water quality standards for temperature, pH, dissolved oxygen, and fecal coliforms in
the LCR. No chemical exceedances of state water quality criteria were identified for the LCR adjacent
to the project site.
3.5.3 Reach Sinuosity
As discussed above, the lower 1.6 miles of the LCR are channelized and much of the shoreline on
both banks is restrained by bulkheads. There is no sinuosity within the entire 1.6 miles of the LCR.
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Stream sinuosity can provide increased habitat complexity through the creation of pools, riffles, and
glides, as well as the creation of off-channel habitat.
3.5.4 Vegetative Conditions
As described previously, riparian vegetation is sparse along the both banks of the LCR within 100 feet
of the project site. As such, habitat diversity and functionality along this reach of the LCR is severely
limited.
3.5.5 Floodplain Condition
The LCR is an artificially-created channel confined by levees and bulkheads on each bank. Except in
extreme discharge conditions, the LCR has very little connectivity with its floodplain and virtually no
potential for formation of off-channel habitat within the floodplain. Because of the low gradient of the
LCR, it functions as a sediment depositional zone. The City of Renton and the U.S. Army Corps of
Engineers periodically dredges the LCR for flood-control purposes. The City of Renton conducted
flood-control dredging during the summer of 2016.
3.5.6 Habitat Values and Functions at the Project Site
A qualitative assessment of the LCR adjacent to the project site indicates that it provides very low
habitat value and function due primarily to the sparse riparian vegetation and habitat complexity.
3.6 HABITAT A LTERATIONS AND I MPACTS AND P ROPOSED H ABITAT
M ANAGEMENT P ROGRAM
The project will not involve any in-water components or work below the OHWM, nor will any portion of
the proposed projects occur in the riparian zone of the LCR.
The relocation of two lights on the guard shack as part of the Gate D-50 task will not result in light
impingement on the adjacent LCR. The guard shack is located approximately 150 feet west of the
west bank of the LCR. An 8-foot-high concrete flood-control wall is also located just above the west
bank of the LCR. The proposed guard shack lighting will be shielded, directed downward and away
from the LCR, and will be 7 feet above the ground, a foot below the height of the flood control wall.
The proposed guard shack lighting will not result in any light impingement on the LCR.
As a best management practice, any soil piles resulting from excavation activities will be covered with
an impervious material, such as visqueen, to minimize and avoid erosion and to prevent silt from
entering the LCR and degrading water quality. Given the distances of the project sites from the
adjacent LCR, as well as the intervening Cedar River Trail Park with manicured lawns, vegetated
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areas, paved roadways, and paved pedestrian pathways, it is highly unlikely that any runoff from the
construction activities at the proposed project would reach the LCR.
The three proposed tasks will not change or adversely affect existing ecological functions of the
riparian habitat along the LCR.
No habitat management or mitigation programs are required for the proposed tasks and none are
proposed.
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4.0 REFERENCES
Barbour, M.T., Gerritsen, J., Snyder, B.C., and Stribling, J.B. 1999. Rapid Bioassessment Protocols
for Use in Streams and Wadeable Rivers. U.S. Environmental Protection Agency, Office of
Water, EPA 841-B-99-002, Washington, D.C.
Corps – see U.S. Army Corps of Engineers
Kerwin, J. 2001. Salmon and Steelhead Habitat Limiting Factors Report for the Cedar-Sammamish
Basin (Water Resource Inventory Area 8). Washington Conservation Commission, Olympia.
King County. 2008. King County Biodiversity Report 2008. King County, Seattle, Washington,
http://www.kingcounty.gov/environment/animalsAndPlants/biodiversity/king-county-
biodiversity-report.aspx (accessed September 1, 2009).
National Oceanic and Atmospheric Administration, National Marine Fisheries Service and the U.S.
Fish and Wildlife Service (NOAA-Fisheries and USFWS). 2008. Endangered Species Act –
Section 7 Consultation Biological Opinion and Magnuson-Stevens Fishery Conservation and
Management Act Essential Fish Habitat Consultation. The I-405 Tukwila to Renton
Improvement Project (I-5 to SR 169 – Phase 2) Lower Cedar River, Cedar River Sixth Field
HUC: 171100120106, 171100120302, King County, Washington. NOAA-Fisheries and
USFWS, Lacey, Washington, https://pcts.nmfs.noaa.gov/pls/pcts-pub/sxn7.pcts_
upload.download?p_file=F13441/200704219_405_trip_03-03-2008.pdf (accessed May 19,
2012).
Parametrix and Adolfson Associates, Inc. (Parametrix and Adolfson). 2010. City of Renton Shoreline
Master Program Update Restoration Plan. Prepared for the City of Renton, Washington,
http://rentonwa.gov/uploadedFiles/Business/EDNSP/planning/
4.3%20Final%20Restoration%20Plan%20(june-10).pdf?n=2474 (accessed April 13, 2012).
Perkins, S.J. 1994. The shrinking Cedar River – channel changes following flow regime regulation and
bank armoring, in Proceedings of Effects of Human-Induced Changes on Hydrologic Systems.
American Water Resources Association 1994 Annual Summer Symposium, p. 649-658.
Richter, K.O., and Azous, A.L. 1997. Amphibian distribution, abundance, and habitat use, in Azous,
A.L., and Horner, R.R. (eds.), Wetlands and Urbanization – Implications for the Future, final
report. Puget Sound Wetlands and Stormwater Management Research Program, Washington
State Department of Ecology, Olympia, King County Water and Land Resources Division,
Seattle, Washington, and University of Washington, Seattle, http://your.kingcounty.gov/dnrp/
library/archive-documents/wlr/wetlands-urbanization-report/wet-rept.pdf (accessed
September 1, 2009).
U.S. Army Corps of Engineers (Corps). 2002. Montlake Cut Slope Stabilization Project Environmental
Assessment Biological Evaluation – Lake Washington Ship Canal, Seattle, Washington.
Corps, Seattle District, Seattle, Washington.
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———. 2004. Cedar River at Renton Flood Damage Reduction Operation and Maintenance Manual –
Cedar River Section 205 (Renton, Washington). U.S. Army Corps of Engineers, Seattle
District, Seattle, Washington.
U.S. Forest Service (USFS). 2010. Stream Inventory Handbook: Levels I and II (Version 2.10). USFS,
Pacific Northwest Region, Region 6, Portland, Oregon.
USGS (U.S. Geological Survey). 2017. USGS Surface-Water Monthly Statistics for Washington –
USGS 12119000 Cedar River at Renton. Department of the Interior, USGS, National Water
Information System,
https://nwis.waterdata.usgs.gov/wa/nwis/uv/?cb_all_00010_00060_00065=on&cb_00010=on&
cb_00060=on&cb_00065=on&format=gif_default&period=&begin_date=2013-05-
27&end_date=2016-12-31&site_no=12119000 (accessed February 23, 2017).
Washington State Department of Ecology (Ecology). 2008. Washington State’s 2008 Water Quality
Assessment (303[d] & 305[b] Report). Ecology, Olympia, http://www.ecy.wa.gov/programs/
wq/303d/2008/index.html (accessed April 15, 2012).
———. 2012. Supplemental Aquatic Life Criteria Information. Ecology, Water Quality Program,
Olympia, http://www.ecy.wa.gov/programs/wq/swqs/AquaticLifeTempSupp.html#timeframes
(accessed December 15, 2012).
Weitkamp, D.E., Ruggerone, G.T., Sacha, L., Howell, J., and Bachen, B. 2000. Factors Affecting
Chinook Populations – Background Report. City of Seattle, Seattle, Washington.
Wydoski, R.S., and Whitney, R.R. 2003. Inland Fishes of Washington. American Fisheries Society,
Bethesda, Maryland, and University of Washington Press, Seattle.
TABLES
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TABLE 1
SMALL MAMMALS REPORTED TO OCCUR ALONG THE LOWER CEDAR RIVER¹
Multiple Projects
Renton, Washington
Species
Common Name and Scientific Name (Genus species)
Creeping vole Microtus oregoni Montane shrew Sorex monticolus
Deer mouse Peromyscus maniculatus Shrew-mole Neurotrichus gibbsii
Ermine Mustela ermine Southern red-backed vole Clethryonomys gapperi
Forest deer mouse Peromyscus oreas Townsend’s chipmunk Tamias townsendii
Long-tailed vole Microtus longicaudus Trowbridge’s shrew Sorex trowbridgei
Marsh shrew Sorex bendirei Vagrant shrew Sorex vagrans
Masked shrew Sorex cinereus
Note(s)
1. Source: Richter and Azous, 1997.
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TABLE 2
BIRDS REPORTED TO OCCUR ALONG THE LOWER CEDAR RIVER1
Multiple Projects
Renton, Washington
Species
Common Name and Scientific Name (Genus species)
American crow Corvus brachyrhynchos Northern pygmy owl Glaucidium gnoma
American goldfinch Carduelis tristis Orange-crowned warbler Vermivora celata
American robin Turdus migratorius Pine siskin Carduelis pinus
Black-capped chickadee Parus atricapillus Pacific-slope flycatcher Empidonax difficilis
Belted kingfisher Ceryle alcyon Purple finch Carpodacus purpureus
Bewick’s wren Thryomanes bewickii Red-breasted nuthatch Sitta Canadensis
Brown-headed cow bird Molothrus ater Red-breasted sapsucker Sphyrapicus ruber
Black-headed grosbeak Pheucticus
melanocephalus
Red crossbill Loxia curvirostra
Brewer’s blackbird Euphagus cyanocephalus Red-eyed vireo Vireo olivaceus
Brown creeper Certhia Americana Rufous-sided towhee Pipilo erythrophthalmus
Black-throated gray
warbler
Dendroica nigrescens Ruffed grouse Bonasa umbellus
Bushtit Psaltriparus minimus Ruby-crowned kinglet Regulus calendula
Chestnut-backed
chickadee
Parus rufescens Red-winged blackbird Agelaius phoeniceus
Cedar waxwing Bombycilla cedrorum Sora Porzana Carolina
Cooper’s hawk Accipiter cooperii Song sparrow Melospiza melodia
Common raven Corvus corax Sharp-shinned hawk Accipiter striatus
Common yellow throat Geothlypis trichas Steller’s jay Cyanocitta stelleri
Dark-eyed junco Junco hyemalis Swainson’s thrush Catharus ustulatus
Downy woodpecker Picoides pubescens Townsend’s warbler Setophaga townsendi
European starling Sturnus vulgaris Vaux’s swift Chaetura vauxi
Evening grosbeak Coccothraustes
vespertinus
Violet-green swallow Tachycineta thalassina
Fox sparrow Passerella iliaca Virginia rail Rallus limicola
Great blue heron Ardea herodias Warbling vireo Vireo gilvus
Golden-crowned kinglet Regulus satrapa Western tanager Piranga ludoviciana
Hairy woodpecker Picoides villosus Willow flycatcher Empidonax traillii
Hermit thrush Catharus guttatus Wilson’s warbler Cardellina pusilla
Marsh wren Cistothorus palustris Winter wren Troglodytes hiemalis
MacGillivray’s warbler Geothlypis tolmiei Wood duck Aix sponsa
Northern flicker Colaptes auratus Yellow warbler Dendroica petechia
Note(s)
1. Source: Richter and Azous, 1997.
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TABLE 3
NON-NATIVE FISH SPECIES INTRODUCED
INTO THE LAKE WASHINGTON/LAKE UNION SYSTEM¹
Multiple Projects
Renton, Washington
Common Name Scientific Name Status
American shad Alosa sapidissima Uncommon strays
Atlantic salmon Salmo salar Can exceed 1,000 per year
Black bullhead Ictalurus melas Extinct
Black crappie Pomoxis nigromaculatus Common
Bluegill Lepomis macrocheilus Common
Brook trout Salvelinus fontinalis Rarely caught
Brown bullhead Ictalurus nebulosus Rare, may be extinct
Brown trout Salmo trutta No observed reproduction
Channel catfish Ictalurus punctatus Rarely caught
Cherry salmon Oncorhynchus masou Extinct
Common carp Cyprinus carpio Abundant
Fathead minnow Pimephales notatus Unknown
Goldfish Carassius auratus Intermittent
Grass carp Ctenopharengodon idella Triploids only
Lake trout Salvelinus namaycush Extinct
Lake whitefish Coregonus clupeaformis Extinct
Largemouth bass Micropterus salmoides Common
Pumpkinseed sunfish Lepomis gibbosus Abundant
Smallmouth bass Micropterus dolomieui Common
Tench Tinca tinca Abundant
Warmouth Lepomis gulosus No observed reproduction
Weather loach Misgurnus angillicaudatus No observed reproduction
White crappie Pomoxis annularis Uncommon
Yellow perch Perca flavescens Abundant
Note(s)
1. Source: Kerwin, 2001.
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TABLE 4
DIFFERENT AQUATIC LIFE USES
AND THEIR ASSOCIATED NUMERIC TEMPERATURE CRITERIA¹
Multiple Projects
Renton, Washington
Beneficial Use Temperature2 (ºC)
Char Spawning and Rearing 12
Core Summer Salmonid Habitat 16
Salmonid Spawning, Rearing, and Migration 17.5
Salmonid Rearing and Migration only 17.5
Note(s)
1. Source: Ecology, 2008.
2. Based on the 7-day average of the daily maximum temperatures.
Abbreviation(s)
ºC = degrees Celsius
FIGURES
MultipleProjStreamStudyFigures_032917.xlsxDate: 03/24/17By: resProj. No. LY17160440Figure 1VICINITY AND SITE MAPSStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA
MultipleProjStreamStudyFigures_032917.xlsxAERIAL PHOTO OF PROJECT LOCATIONS
(in red)
Date: 03/29/17 Proj. No. LY17160440
Figure 2
Standard Stream Study Narrative and
Habitat Data Report - Multiple Projects
By: res
MultipleProjStreamStudyFigures_032917.xlsxBLDG. 4-42 SEWAGE LIFT STATION,
PLAN VIEW
Date: 03/29/17 Proj. No. LY17160440
Figure 3
Standard Stream Study Narrative and
Habitat Data Report - Multiple Projects
By: res
MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 4GATE D-50 FENCING AND BARRIERS, PLAN VIEWStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA
MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 5GATE D-50 PAVING AND GRADING, PLAN VIEWStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA
MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 6GATE D-50 GUARD HOUSE FLOOR PLAN, PLAN VIEWStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA
MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 7GATE D-50 GUARD HOUSE EXTERIOR ELEVATIONSStandard Stream Study Narrative andHabitat Data Report - Multiple ProjectsRenton, WA
MultipleProjStreamStudyFigures_032917.xlsxDate: 03/24/17By: RESProj. No. LY17160440Figure 8APRON D FUEL SPILL CONTAINMENT PLANStandard Stream Study Narrative andHabitat Data Report - Multiple ProjectsRenton, WA
APPENDIX A
Bldg. 4-42 Sewage Lift Station Photo Log
Appendix_A-B-C_PhotoPointFigures_032917.xlsxBy: res
Phase No.: 01
Project: LY17160440
PHOTO POINTS ADJACENT TO BLDG. 4-42
Standard Stream Study Narrative and
Habitat Data Report - Multiple Projects
Renton, WA
Date: 03/29/17
Figure A-1
(This page intentionally left blank)
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-1
appendix a photolog_032917.docx
Photo 1 N @ ramp – Blackberry, reed canarygrass
Photo 2 S @ ramp – Alder tree, blackberry, unidentified shrub, grasses, and weeds
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-2 Project No. LY17160440
appendix a photolog_032917.docx
Photo 3 W @ 100 ft N – Alder tree
Photo 4 S @ 100 ft N – Pine tree >10 ft DBH
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-3
appendix a photolog_032917.docx
Photo 5 N @ 100 ft N – Alder tree >10 inches DBH
Photo 6 W @ 100 ft N – Flowering currant in foreground and alder tree in background
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-4 Project No. LY17160440
appendix a photolog_032917.docx
Photo 7 W @ 200 ft N – Mature willow
Photo 8 N @ 200 ft N – Blackberry and willow
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-5
appendix a photolog_032917.docx
Photo 9 S @ 200 ft N – Mature willow
Photo 10 200 ft N – Bulkhead
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-6 Project No. LY17160440
appendix a photolog_032917.docx
Photo 11 W @ 300 ft N – Scot’s broom and nootka rose
Photo 12 N @ 300 ft N – Alder tree
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-7
appendix a photolog_032917.docx
Photo 13 S @ 300 ft N – Big leaf maple
Photo 14 NW +300 ft N – Beaver activity near North Bridge
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-8 Project No. LY17160440
appendix a photolog_032917.docx
Photo 15 NW +300 ft N – Beaver activity south of North Bridge
Photo 16 SW +300 ft N – Beaver activity south of North Bridge
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-9
appendix a photolog_032917.docx
Photo 17 NW +300 ft N – Beaver activity south of North Bridge
Photo 18 S @ ramp – Unidentified shrub in foreground; shore pine in background
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-10 Project No. LY17160440
appendix a photolog_032917.docx
Photo 19 S @ ramp – Unidentified poplar species
Photo 20 W @ 100 ft S – Alder trees
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-11
appendix a photolog_032917.docx
Photo 21 N @ 100 ft S – Alder trees; unidentified shrub
Photo 22 S @ 100 ft S – Alder tree in background; flowering currant to the right
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-12 Project No. LY17160440
appendix a photolog_032917.docx
Photo 23 W @ 200 ft S – Unidentified tree (foreground); shore pine (background)
Photo 24 N @ 200 ft S – Unidentified shrub
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-13
appendix a photolog_032917.docx
Photo 25 S @ 200 ft S – Red osier dogwood
Photo 26 W @ 300 ft S – Red osier dogwood
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-14 Project No. LY17160440
appendix a photolog_032917.docx
Photo 27 N @ 300 ft S – Red osier dogwood
Photo 28 S @ 300 ft S – Red osier dogwood
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 A-15
appendix a photolog_032917.docx
Photo 29 N @ 300 ft S – Manicured lawn adjacent to river
APPENDIX A
BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
A-16 Project No. LY17160440
appendix a photolog_032917.docx
(This page intentionally left blank)
APPENDIX B
Gate D-50 Photo Log
Appendix_A-B-C_PhotoPointFigures_032917.xlsxPhase No.: 01Project: LY17160440PHOTO POINTS ADJACENT TO THE GATE D-50 MODIFICATIONS PROJECT SITEStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WADate: 03/29/17By: resFigure B-1
(This page intentionally left blank)
APPENDIX B
GATE D-50 PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 B-1
appendix b photolog_032917.docx
Photo 1 W @ Gate D-50 – Looking at riprapped west shoreline and flood control wall
Photo 2 N @ adjacent to Gate D-50 – Looking at riprapped west bank and flood control wall
APPENDIX B
GATE D-50 PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
B-2 Project No. LY17160440
appendix b photolog_032917.docx
Photo 3 S @ adjacent to Gate D-50 – Looking at riprapped west bank and flood control wall
Photo 4 W @ 100 ft S adjacent to Gate D-50 – Note small alder trees on west shoreline
APPENDIX B
GATE D-50 PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 B-3
appendix b photolog_032917.docx
Photo 5 N @ 100 ft S adjacent to Gate D-50
Photo 6 S @ 100 ft S adjacent to Gate D-50 – Note small alder trees on west bank
APPENDIX B
GATE D-50 PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
B-4 Project No. LY17160440
appendix b photolog_032917.docx
Photo 7 N @ (from Logan Street Bridge) Gate D-50 – Note small alder trees on west bank
Photo 8 W @ 100 ft N adjacent to Gate D-50
APPENDIX B
GATE D-50 PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 B-5
appendix b photolog_032917.docx
Photo 9 N @ 100 ft N adjacent to Gate D-50
Photo 10 S @ 100 ft N adjacent to Gate D-50
APPENDIX B
GATE D-50 PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
B-6 Project No. LY17160440
appendix b photolog_032917.docx
(This page intentionally left blank)
APPENDIX C
Apron D Fuel Spill Containment Photo Log
Appendix_A-B-C_PhotoPointFigures_032917.xlsxPhase No.: 01
Project: LY17160440
PHOTO POINTS ADJACENT TO APRON D
FUEL SPILL CONTAINMENT SITE
Standard Stream Study Narrative and
Habitat Data Report - Multiple Projects
Renton, WA
Date: 03/29/17
By: res
Figure C-1
(This page intentionally left blank)
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-1
appendix c photolog_032917.docx
Photo 1 W @ N Boundary Apron D – Unidentified shrub in foreground; forsythia in background
Photo 2 N @ N Boundary Apron D – Forsythia to the left; unidentified shrub to the right
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-2 Project No. LY17160440
appendix c photolog_032917.docx
Photo 3 S @ N Boundary Apron D – Unidentified poplar trees to the left; forsythia to the right
Photo 4 W @ 100 ft N of N Boundary Apron D – Forsythia in background
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-3
appendix c photolog_032917.docx
Photo 5 N @ 100 ft N of N Boundary Apron D – Forsythia at left; unidentified shrubs in foreground
Photo 6 S @ 100 ft N of N Boundary Apron D – Forsythia at right; unidentified poplars at left
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-4 Project No. LY17160440
appendix c photolog_032917.docx
Photo 7 W @ 100 ft S of N Boundary Apron D – Unidentified pine species
Photo 8 N @ 100 ft S of N Boundary Apron D – Unidentified poplar species
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-5
appendix c photolog_032917.docx
Photo 9 S @ 100 ft S of N Boundary Apron D – Unidentified poplar species
Photo 10 W @ 100 ft S of N Boundary Apron D – Near LCR, ferns and unidentified trees
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-6 Project No. LY17160440
appendix c photolog_032917.docx
Photo 11 N @ 100 ft S of N Boundary Apron D – Near LCR, forsythia and unidentified shrubs
Photo 12 S @ 100 ft S of N Boundary Apron D – Near LCR, unidentified pine species
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-7
appendix c photolog_032917.docx
Photo 13 W @ 200 ft S of N Boundary Apron D
Photo 14 N @ 200 ft S of N Boundary Apron D – Unidentified shrubs and willows
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-8 Project No. LY17160440
appendix c photolog_032917.docx
Photo 15 S @ 200 ft S of N Boundary Apron D – Unidentified pine and alder at right
Photo 16 N @ 300 ft S of N Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-9
appendix c photolog_032917.docx
Photo 17 S @ 300 ft S of N Boundary Apron D
Photo 18 W @ 300 ft S of N Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-10 Project No. LY17160440
appendix c photolog_032917.docx
Photo 19 N @ 300 ft S of N Boundary Apron D – Near LCR
Photo 20 S @ 300 ft S of N Boundary Apron D – Near LCR
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-11
appendix c photolog_032917.docx
Photo 21 E @ 400 ft S of N Boundary Apron D – Unidentified pine species
Photo 22 W @ 400 ft S of N Boundary Apron D – Alder trees and unidentified shrubs
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-12 Project No. LY17160440
appendix c photolog_032917.docx
Photo 23 N @ 400 ft S of N Boundary Apron D – Alder tree and unidentified pine and shrubs
Photo 24 S @ 400 ft S of N Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-13
appendix c photolog_032917.docx
Photo 25 E @ 500 ft S of N Boundary Apron D – Alder tree and unidentified shrubs
Photo 26 N @ 500 ft S of N Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-14 Project No. LY17160440
appendix c photolog_032917.docx
Photo 27 S @ 500 ft S of N Boundary Apron D
Photo 28 W @ 500 ft S of N Boundary Apron D – Unidentified pine species
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-15
appendix c photolog_032917.docx
Photo 29 N @ 600 ft S of N Boundary Apron D
Photo 30 S @ 600 ft S of N Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-16 Project No. LY17160440
appendix c photolog_032917.docx
Photo 31 W @ 600 ft S of N Boundary Apron D
Photo 32 N @ 600+ ft (from South Bridge) S of N Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-17
appendix c photolog_032917.docx
Photo 33 S @ 600+ ft (from South Bridge) S of N Boundary Apron D
Photo 34 N @ S Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-18 Project No. LY17160440
appendix c photolog_032917.docx
Photo 35 W @ S Boundary Apron D – Alder tree >10 inches DBH
Photo 36 S @ S Boundary Apron D
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
Project No. LY17160440 C-19
appendix c photolog_032917.docx
Photo 37 E @ 100 ft S of S Boundary Apron D
Photo 38 W @ 100 ft S of S Boundary Apron D – Blackberry and willows
APPENDIX C
APRON D FUEL SPILL CONTAINMENT PHOTO LOG
Multiple Projects
Renton, Washington
Amec Foster Wheeler
C-20 Project No. LY17160440
appendix c photolog_032917.docx
Photo 39 N @ 100 ft S of S Boundary Apron D
Photo 40 S @ 100 ft S of S Boundary Apron D