HomeMy WebLinkAboutLUA14-000703_MiscSTANDARD STREAM STUDY NARRATIVE
AND HABITAT DATA REPORT
Boeing Parking Lot 9 Project
Renton, Washington
Prepared for:
The Boeing Company
Renton, Washington
Prepared by:
AMEC Environment & Infrastructure, Inc.
3500 188th Street SW, Suite 601
Lynnwood, Washington 98037
(425) 921-4000
May 2014
Project No. LY14160240
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TABLE OF CONTENTS
Page
1.0 INTRODUCTION ............................................................................................................ 1
2.0 STANDARD STREAM STUDY NARRATIVE ................................................................. 7
2.1 STREAM CLASSIFICATION ...................................................................................... 7
2.2 VEGETATIVE COVER ............................................................................................. 7
2.3 ECOLOGICAL FUNCTION ........................................................................................ 7
2.4 FISH AND WILDLIFE ............................................................................................... 8
2.4.1 Mammals ................................................................................................ 8
2.4.2 Birds ........................................................................................................ 9
2.4.3 Amphibians and Reptiles ........................................................................ 9
2.4.4 Fish ....................................................................................................... 10
2.5 MEASURES TO PROTECT TREES AND VEGETATION .............................................. 11
2.6 No NET Loss OF ECOLOGICAL FUNCTION ........................................................... 11
3.0 HABITAT DATA REPORT ............................................................................................ 13
3. 1 HABITAT DIVERSITY ............................................................................................ 13
3.2 MIGRATION CORRIDORS ..................................................................................... 14
3.3 SPECIES AND COVER TYPES ............................................................................... 14
3.4 IDENTIFICATION OF DISTURBED AREAS ................................................................ 15
3.5 EXISTING HABITAT VALUES AND FUNCTIONS ........................................................ 15
3.5. 1 Temperature ......................................................................................... 16
3.5.2 Water Quality ........................................................................................ 16
3.5.3 Reach Sinuosity .................................................................................... 17
3.5.4 Vegetative Conditions ........................................................................... 17
3.5.5 Floodplain Condition ............................................................................. 17
3.5.6 Habitat Values and Functions at the Project Site .................................. 17
3.5.7 Habitat Alterations and Impacts and Proposed Habitat
Management Program .......................................................................... 17
4. 0 REFERENCES ............................................................................................................. 19
Table 1
Table 2
Table 3
Table 4
TABLES
New and Existing Light Fixtures
Small Mammals Reported to Occur Along the Lower Cedar River
Birds Reported to Occur Along the Lower Cedar River
Non-Native Fish Species Introduced into the Lake Washington/Lake Union
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Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
TABLE OF CONTENTS
(Continued)
FIGURES
Vicinity Map
Parking Lot 9 Project Site
Proposed Lighting Plan
Proposed Landscaping Plan
Modeled Light Impingement for the Parking Lot 9 Site and Adjacent Lower
Cedar River
APPENDIX
Appendix A Site Photographs
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STANDARD STREAM STUDY NARRATIVE
AND HABITAT DATA REPORT
Boeing Parking Lot 9 Project
Renton, Washington
1.0 INTRODUCTION
The Boeing Company (Boeing) proposes to conduct maintenance activities at its Parking Lot 9 site
located in Renton, Washington on the west bank of the lower Cedar River and south of the South
Aircraft Bridge (Figures 1 and 2). The project site extends approximately 890 feet south of the South
Aircraft Bridge along the west bank of the lower Cedar River and is set back about 30 feet from the
river, with an 8-foot-high flood control wall and the East Perimeter Road separating the Parking Lot 9
site from the river (Figure 2). The proposed project consists of the following elements:
• Remove existing paint stripping in Parking Lot 9;
• Patch and crack seal asphalt pavement;
• Install three new 25-foot-tall light fixtures;
• Switch out two light fixtures on an existing wood pole;
• Fog seal the existing pavement surface;
• Paint new parking and walkway stripping;
• Add pre-cast wheel stops;
• Install two new landscaping areas; and
• Install a 4-foot-high polyvinyl chloride-coated chain-link fence for pedestrian safety.
The City of Renton expressed concerns regarding potential light impingement on the adjacent lower
Cedar River resulting from repairs of existing light fixtures and installation of new light fixtures. The
focus of this project description is the repair and installation of lighting at the Parking Lot 9 site.
Boeing's proposed lighting plan (Figure 3) is being conducted to improve safety at the facility for
Boeing employees and contractors who must work at night. Table 1 summarizes existing and
proposed new lighting fixtures at the Parking Lot 9 project site. New lighting fixtures will be equipped
with Holophane light-emitting diode (LED) lamps that provide directional lighting to minimize and avoid
extraneous light impingement on the lower Cedar River. The proposed use of LED bulbs in the new
fixtures is also expected be more environmentally friendly, substantially decreasing energy
consumption when compared to other bulbs such as incandescent, halogen, and mercury vapor.
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The proposed plan also incorporates landscaping at two areas on the site using low-growing shrubs
(Figure 4) that will be consistent with Federal Aviation Administration (FAA) guidelines regarding
landscaping adjacent to airports. The vegetation will consist of:
• Edward Goucher abelia (Abelia grandiflora);
• Dwarf burning bush (Euonmus ala/us compactus);
• Western sword fern (Polystichum minitum); and
• Nootka rose (Rosa nutkana).
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 Parking Lot 9 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 ordinary high water mark (OHWM) determined in the field by a qualified biologist
pursuant to RMC 4-3-050L 1 b (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;
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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 (1 O") average diameter that are within one hundred feet (100') of the OHWM;
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 4-8-12007, 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 4-3-05004 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 4-3-09002. If the proposal requires mitigation for substantial impacts to
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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).
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 State Department of Fish and Wildlife's Natural Heritage
and Non-Game Data System databases;
v. The results of searches of the Washington State 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
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quantity, changes in water quality, increases in human intrusion, and impacts on wetlands
or water resources. (Ord. 4835, 3-27-2000)
This report provides a description of the environmental and habitat attributes of the project site where
the Parking Lot 9 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 function of the lower Cedar River adjacent to the Parking Lot 9 project site.
2.1 STREAM CLASSIFICATION
According to RMC 4-3-050Q4 (City of Renton Water Class Map), the Cedar River in the vicinity of the
project site is Class 1 water.
2.2 VEGETATIVE COVER
AMEC biologist, Bob Stuart, conducted a site survey on May 14, 2014 from 1200 to 1300 to assess
habitat conditions and vegetative cover along the lower Cedar River shoreline adjacent to and within
100 feet of the project site. The project site is defined as Parking Lot 9 and is adjacent to
approximately 890 feet of the lower Cedar River on its west bank. The Renton Municipal Airport is
located immediately west of the site and consists primarily of concrete and asphalt surfaces used for
launching and landing commercial and recreational aircraft.
A vegetation survey was conducted along the west bank of the lower Cedar River adjacent to and
extending 100 feet upstream and downstream of the Parking Lot 9 site. Appendix A provides a photo
log depicting habitat conditions and vegetation along the riparian zone of the west bank of the lower
Cedar River adjacent to the project site. The riparian zone along the west bank of the Cedar River
adjacent to and within 100 feet of the site is narrow (6-to 12-feet wide), abutting against an 8-foot-
high concrete flood-control wall (Appendix A, Photos 1, 2, 4, 5, and 10). Riparian vegetation at the
time of the visit was very sparse and was limited primarily to patches of reed canarygrass (Phalaris
arundinacea), Japanese knotweed (Polygonum cuspidatum), horsetail (Equisetum f/uviatile),
Himalayan blackberry (Rubus armeniacus), and alder (A/nus rubra) (Appendix A, Photos 6, 7, 8, 9,
and 10). Reed canarygrass, Japanese knotweed, and Himalayan blackberry are listed as noxious
weeds by King County. The width of the riparian area is limited by the concrete flood-control wall
(Appendix A, Photos 1, 2, and 4 ).
No trees with trunks greater than or equal to 1 O inches in diameter are located within 100 feet of the
property line of the project.
2.3 ECOLOGICAL FUNCTION
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
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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 west bank of the lower Cedar River adjacent to the project site is sparsely
vegetated and dominated by invasive species, as discussed in Section 2.2, above. The primary
ecological functions provided by riparian vegetation along the west bank of lower Cedar River within
100 feet of the project site 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 lower Cedar River 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 lower Cedar River 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 lower Cedar River because of the dominance of small shrubs and the lack of large trees. Both
banks of the river in the project area 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 WILDLIFE
This section addresses fish and wildlife species that may use the lower Cedar River in the vicinity of
the project site.
2.4.1 Mammals
No mammals or signs of mammal use were observed during the site visits. Given the level of
development in the project area, it is likely that only small mammals such as squirrels, mice, rats,
voles, moles, raccoons, opossums, muskrats, and river otters use the riparian areas along the lower
Cedar River shoreline within 100 feet of the project area. Richter and Azous (1997), conducting small-
mammal surveys in a wetland along the lower Cedar River, reported 13 species of mammals
{Table 2). These, as well as other small mammals common to the Puget lowlands, may occur along
the lower Cedar River adjacent to the project site.
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2.4.2 Birds
Several bird species were observed during the site visit, including American crow ( Corvus
brachyrhynchos), American robin (Turdus migratorius), and European starling (Stumus vulgaris).
Richter and Azous (1997) conducted bird surveys in a wetland of the lower Cedar River 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 3). 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 visit; 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 lower Cedar River:
• Ensatina (Ensatina eschscholtzil),
• Long-toed salamander (Ambystoma macrodactylus),
• Northwestern salamander (A gracile),
• Pacific tree frog (Pseudoacris regil/a),
• Red-legged frog (Rana aurora), and
• Western red-backed salamander (Plethodon vehiculum).
No information was located listing reptile species occurring along the lower Cedar River 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 scrip/a),
• Western fence lizard (Sceloporus occidentalis), and
• Western terrestrial garter snake (T. elegans).
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2.4.4 Fish
Small fish were observed jumping in the lower Cedar River adjacent to the project site during the site
visit. Although they could not be identified, they appeared to be small salmonids. The Lake
Washington system, including the lower Cedar River adjacent to the project site, hosts many fish
species, including five salmonid species: Chinook salmon (Oncorhynchus tshawytscha), coho salmon
( 0. kisutch), sockeye/kokanee salmon ( 0. nerka), coastal cutthroat trout ( 0. clarki clark1), and
steelhead/rainbow trout (0. mykiss). Anadromous forms of each of these species are present, 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 lower Cedar River 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.
Nonanadromous forms of winter steelhead (rainbow trout), sockeye (kokanee), and cutthroat trout
may also occur in the lower Cedar River. 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 (WRIA) 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 0. 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 [mm], 3 year old), was caught in the lower Cedar River in July 1998. An adult char
was also caught in the lower Cedar River in April of 1993 (Corps, 2002).
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Based on this information, occurrence of bull trout in the lower Cedar River adjacent to the project site
is expected to be extremely limited, if they occur at all.
Species endemic to the Lake Washington system include the northern pike minnow (Ptychochei/us
oregonensis), peamouth (Mylocheilus caurinus), sculpins (Coitus spp.), and longfin smelt (Spirinchus
thaleichthys) (Weitkamp et al., 2000; Wydoski and Whitney, 2003). Twenty-four non-native fish
species (Table 4) 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
prey on juvenile salmon (e.g., smallmouth bass) while others are potential competitors with juvenile
salmonids for food (Kerwin, 2001 ).
2.5 MEASURES TO PROTECT TREES AND VEGETATION
The proposed project will not occur in areas with existing trees or riparian vegetation. No direct or
indirect impacts to riparian vegetation or trees are expected from the project; therefore, no measures
to protect vegetation or trees have been incorporated into the work plan.
2.6 No NET Loss OF ECOLOGICAL FUNCTION
The project will result in no net loss of ecological function in the riparian zone of the lower Cedar River
adjacent to and 100 feet upstream and downstream of the boundaries of the Parking Lot 9 project
site. As described above, the lower Cedar River adjacent to the project site provides limited ecological
function due to low habitat diversity and complexity.
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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
Parking Lot 9 project is to occur. Subsequent sections 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 DIVERSITY
The lower Cedar River downstream of 1-405 (approximately 1.6 miles) is an artificial channel created
early in the 20 1h 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. 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 (LWD) 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 lower Cedar River 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 lower Cedar River adjacent to the project site consists of a low relief benthic
habitat composed of small cobbles with some gravel and no boulders. LWD in the stretch of the lower
Cedar River adjacent to the project site is extremely limited (Appendix A, Photo 1 ). River discharge at
the time of the site visit was approximately 1,000 cubic feet per second (USGS, 2014 ). Channelization
of the lower Cedar River 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 lower Cedar River adjacent to the project site is extremely limited.
3.2 MIGRATION CORRIDORS
A query of the Washington Department of Fish and Wildlife's Priority Habitat and Species (PHS)
database {http://wdfw.wa.gov/mapping/phs/) (Appendix B, Appendix A) identified five salmonid
species that use the lower Cedar River as a migration corridor:
• Chinook salmon;
• Coho salmon;
• Sockeye salmon;
• Steel head 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 lower Cedar River 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 lower Cedar River (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 COVER TYPES
The almost complete absence of riparian vegetation along the west bank of the lower Cedar River
adjacent to the project site and the highly developed shorelines along both banks of the lower Cedar
River severely limit habitat availability and use by multiple plant and animal species. The concrete
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flood-control wall on the west bank of the lower Cedar River adjacent to the 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 lower Cedar River are, for the most part, absent along the stretch adjacent to the
project site.
A query of the Washington Department of Natural Resources' Natural Heritage Program on line
database {http://www.dnr.wa.gov/ResearchScience/HowTo/ConservationRestoration/Pages/
amp_nh_data_order.aspx) did not identify any plant or animals 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 DISTURBED AREAS
The entire project area is highly developed and disturbed. As stated in Section 3.1 above, the lower
1.6 miles of the Cedar River is an artificially-created channel with extensive development along both
banks.
3.5 EXISTING HABITAT VALUES AND FUNCTIONS
The lower Cedar River 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:
• Temperature,
• Water quality,
• Reach sinuosity,
AMEC
Project No. LY14160240 15
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• 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 (°C) in the Cedar River at Renton for the period of 1992 through
2013 (USGS, 2014) are as follows:
January -6.0;
February -6.4;
March -7.6;
April-9.4;
May-11.5;
June -13.2;
July-15.5;
August -15.8;
September -13. 7;
October-10.9;
November -8.1; and
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 (see table below), with the exception of the char spawning and rearing
beneficial use (char do not spawn in the lower Cedar River and it is highly unlikely that they use the
lower Cedar River as rearing habitat).
DIFFERENT AQUATIC LIFE USES AND THEIR ASSOCIATED NUMERIC CRITERIA'
Beneficial Use Temoerature2 (°Cl
Char Soawnina and Rearina 12
Core Summer Salmonid Habitat 16
Salmonid Soawnina, Rearina, and Miaration 17.5
Salmonid Reanna and Miaration onlv 17.5
Note{s)
1. Source: Ecology, 2012.
2. Based on the 7-day average of the daily maximum temperatures.
Abbreviation{s)
°C = degrees Celsius
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
(Ecology). Washington State's Water Quality Assessment [303(d) & 305(b) Report] (Ecology, 2008)
identified exceedances of water quality standards for temperature, pH, dissolved oxygen, and fecal
coliforms in the lower Cedar River. No chemical exceedances of state water quality criteria were
identified for the lower Cedar River adjacent to the project site.
AMEC
16 Project No. LY14160240
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3.5.3 Reach Sinuosity
As discussed above. the lower 1.6 miles of the Cedar River 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 lower Cedar River. 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 almost completely lacking along the west bank of the
lower Cedar River adjacent to the project site. As such, habitat diversity and functionality along the
lower Cedar River adjacent to the project site is severely limited.
3.5.5 Floodplain Condition
The lower Cedar River is an artificially-created channel confined by levees and bulkheads on each
bank. Except in extreme discharge conditions, the lower Cedar River 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 lower Cedar River, it functions as a sediment depositional zone.
The City of Renton and the Corps of Engineers periodically dredge the lower Cedar River for
flood-control purposes. The City of Renton is proposing flood-control dredging for the summer of
2015.
3.5.6 Habitat Values and Functions at the Project Site
A qualitative assessment of the lower Cedar River adjacent to the project site indicates that ii provides
very low habitat value and function due primarily to the sparse riparian vegetation and habitat
complexity.
3.5.7 Habitat Alterations and Impacts and Proposed Habitat Management Program
The project will not involve any in-water or over-water components, nor will any portion of the project
occur in the riparian zone of the lower Cedar River. The one component of the project that could
potentially affect aquatic biota in the lower Cedar River is light impingement from the additional
lighting proposed for Parking Lot 9. Figure 3 shows the existing light fixtures, as well as the proposed
additional light fixtures, in Parking Lot 9. This information is further summarized in Table 1.
Proposed new lighting will consist of three pole-mounted (25-foot poles) light fixtures and replacement
of two light fixtures on an existing pole (20-foot pole). Existing light fixtures consist of a combination of
building-mounted, wall packs, and pole-mounted lights. The proposed new light fixtures will consist of
directional LED bulbs to minimize and avoid extraneous light from impinging upon the lower Cedar
River.
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Project No. L Y14160240 17
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Modeling of the extent of extraneous light generated by existing and proposed new lighting indicated
that there would be no increased light impingement on the lower Cedar River adjacent to the project
site (Figure 5). Figure 5 is an exploded view of a portion of Figure 3 where one of the new pole lights
(Pole 207E) will be placed. The small numbers on Figure 5 indicate light impingement (lumens) at
ground level at approximately 10-foot intervals from the source. As can be seen from Figure 5, the
proposed light fixtures will not result in increased light impingement on the lower Cedar River adjacent
to the site. Therefore, the project will not alter existing habitat conditions along the lower Cedar River.
No habitat management or mitigation program is required for this project and none are proposed.
AMEC
18 Project No. L Y14160240
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4.0 REFERENCES
Barbour, M.T., J. Gerritsen, B.C. Snyder, and J.B. Stribling. 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 (U.S. Army Corps of Engineers). 2002. Montlake Cut Slope Stabilization Project Environmental
Assessment Biological Evaluation -Lake Washington Ship Canal, Seattle, Washington.
Corps, Seattle District, Seattle, Washington.
Corps (U.S. Army Corps of Engineers). 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.
Ecology (Washington State Department of 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).
Ecology (Washington State Department of Ecology). 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).
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).
NOAA-Fisheries and USFWS (National Oceanic and Atmospheric Administration, National Marine
Fisheries Service and the U.S. Fish and Wildlife Service). 2008. Endangered Species Act -
Section 7 Consultation Biological Opinion and Magnuson-Stevens Fishery Conservation and
Management Act Essential Fish Habitat Consultation. The 1-405 Tukwila to Renton
Improvement Project (1-5 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 (Adolfson Associates, Inc.). 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 fiow 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.
AMEC
Project No. LY14160240 19
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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).
USFS (U.S. Forest Service). 2010. Stream Inventory Handbook: Levels I and II (Version 2.10). USFS,
Pacific Northwest Region, Region 6, Portland, Oregon.
USGS (U.S. Geological Survey). 2014. USGS Surface-Water Monthly Statistics for Washington -
USGS 12119000 Cedar River at Renton. Department of the Interior, USGS, National Water
Information System, http://nwis.waterdata.usgs.gov/wa/nwis/monthly/
?referred_module=sw&site_no=12119000&por_ 12119000_ 18=1179603,00010, 18, 1992-
02,2013-09&format=html_table&date_format=YYYY-MM-
DD&rdb_compression=file&submitted_form=parameter_selection_list (accessed May 9, 2014).
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.
AMEC
20 Project No. LY14160240
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Light Fixtures
Wall Pack
1A
2A
3
3A
4A
5A
6
6A
7
7A
Buildina Mount
05-51-L 1
05-51-L2
05-51-L3
05-51-L4
Poles
112E
210E-L 1
210E-L2
110E
110E
207E-L 1
207E-L2
207E-L3
207E-L4
109E
206E-L 1
206E-L2
206E-L3
206E-L4
108E-L 1
108E-L2
107E
106-L 1
TABLE 1
NEW AND EXISTING LIGHT FIXTURES
Boeing Parking Lot 9 Project
Renton, Washington
Height
Above Ground
Existino New lfeetl
X 8
X 8
X 8
X 8
X 8
X 20
X 8
X 20
X 8
X 8
X 25
X 25
X 25
X 25
X NA
X 25
X 25
X NA
X NA
X 25
X 25
X 25
X 25
X 20
X 25
X 25
X 25
X 25
X /realacementl 20
X (replacement) 20
X 20
X 20
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Location
Bldq. 5-51
Blda. 5-51
Bldq. 5-43
Blda. 5-51
Bldg. 5-51
Bldo. 5-51
Blda. 5-36
Bldq. 5-36
Blda. 5-43
Bldg. 5-36
Blda. 5-51
Bldq. 5-51
Blda. 5-51
Blda. 5-51
North Lot
North Lot
North Lot
North Lot
Mid Lot
Mid Lot
Mid Lot
Mid Lot
Mid Lot
South Lot
South Lot
South Lot
South Lot
South Lot
South Lot
South Lot
South Lot
South Lot
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Page 1
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TABLE2
SMALL MAMMALS REPORTED TO OCCUR ALONG THE LOWER CEDAR RIVER'
Boeing Parking Lot 9 Project
Renton, Washington
Species
Common Name and Scientific Name (Genus species)
Creeping vole Microtus oregoni
Deer mouse Peromyscus manicu/atus
Ermine Mustela ermine
Forest deer mouse Peromyscus oreas
Long-tailed vole Microtus longicaudus
Marsh shrew Sorex bendirei
Masked shrew Sorex cinereus
Notes\
1. Source: Richter and Azous, 1997.
p:\boeing renton\ly14160240 lot 9 lake-stream study\reports\slss
report\figs_ tbls\tables_ slss _ 051614.docx
Montane shrew
Shrew-mole
Southern red-backed vole
Townsend's chipmunk
Trowbridge's shrew
Vagrant shrew
Sorex montico/us
Neurotrichus gibbsii
Clethryonomys gapperi
Tamias townsendii
Sorex trowbridgei
Sorex vagrans
AMEC
Page 2
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TABLE3
BIRDS REPORTED TO OCCUR ALONG THE LOWER CEDAR RIVER1
Boeing Parking Lot 9 Project
Renton, Washington
Species
Common Name and Scientific Name Genus species'
American crow Corvus brachvrhvnchos
American aoldfinch Cardue/is tristis
American robin Turdus miqratorius
Black-caooed chickadee Parus atricapi/lus
Belted kinafisher Cervle alcvon
Bewick's wren Thrvomanes bewickii
Brown-headed cow bird Molothrus ater
Black-headed grosbeak Pheucticus
melanoceoha/us
Brewer's blackbird Euphagus
cvanoceoha/us
Brown creeoer Certhia Americana
Black-throated gray Dendroica nigrescens
warbler
Bushtit Psaltrioarus minimus
Chestnut-backed Parus rufescens
chickadee
Cedar waxwina Bombycil/a cedrorum
Coooer's hawk Accioiter coooerii
Common raven Corvus corax
Common yellow throat Geoth/vois trichas
Dark-eved iunco Junco hvemalis
Downv woodoecker Picoides oubescens
European starlina Sturnus vulaaris
Evening grosbeak Coccothraustes
vesoertinus
Fox sparrow Passerella iliaca
Great blue heron Ardea herodias
Golden-crowned kinalet Reau/us satraoa
Hairv woodoecker Picoides vil/osus
Hermit thrush Catharus auttatus
Marsh wren Cistothorus oa/ustris
MacGillivrav's warbler Geoth/vnis tolmiei
Northern flicker Co/aptes aura/us
Notes)
1. Source: Richter and Azous, 1997.
p:\boeing renton\ly14160240 lot 9 lake-stream study\reports\slss
report\figs _ tbls\ta bles _ sl ss _ 051614. docx
Northern nvnmv owl
Oranae-crowned warbler
Pine siskin
Pacific-slope fiycatcher
Purole finch
Red-breasted nuthatch
Red-breasted sapsucker
Red crossbill
Red-eyed vireo
Rufous-sided towhee
Ruffed grouse
Rubv-crowned kinalet
Red-winged blackbird
Sora
Sona soarrow
Sham-shinned hawk
Steller's jay
Swainson's thrush
Townsend's warbler
Vaux's swift
Violet-green swallow
Virainia rail
Warblina vireo
Western tanaaer
Willow fivcatcher
Wilson's warbler
Winter wren
Wood duck
Yellow warbler
G/aucidium anoma
Vermivora celata
Cardue/is oinus
Empidonax diffici/is
Caroodacus ouroureus
Sit/a Canadensis
Sphyrapicus ruber
Loxia curvirostra
Vireo o/ivaceus
Pioilo ervthroohthalmus
Bonasa umbel/us
Regulus ca/endula
Agelaius phoeniceus
Porzana Carolina
Melosoiza melodia
Accioiter stria/us
Cyanocitta stelleri
Catharus ustulatus
Setoohaaa townsendi
Chaetura vauxi
Tachycineta tha/assina
Raf/us limico/a
Vireo qi/vus
Piranaa ludaviciana
Emoidonax trail/ii
Cardellina pusil/a
Troalodvtes hiemalis
Aix soonsa
Dendroica oetechia
AMEC
Page 3
amecfJ
TABLE4
NON-NATIVE FISH SPECIES INTRODUCED INTO
THE LAKE WASHINGTON/LAKE UNION SYSTEM'
Boeing Parking Lot 9 Project
Renton, Washington
Common Name Scientific Name
American shad Alosa saoidissima
Atlantic salmon Sa/mo salar
Black bullhead /cta/urus me/as
Black crannie Pomoxis niaromaculatus
Blueaill Leoomis macrochei/us
Brook trout Sa/velinus fontinalis
Brown bullhead lctalurus nebulosus
Brown trout Sa/mo trutta
Channel catfish lctalurus ounctatus
Cherry salmon Oncorhvnchus masou
Common carp Cvnrinus caroio
Fathead minnow Pimeoha/es notatus
Goldfish Carassius auratus
Grass cam Ctenooharenaodon idefla
Lake trout Sa/velinus namavcush
Lake whitefish Coreaonus cluoeaformis
Laraemouth bass Microoterus sa/moides
Pumpkinseed sunfish Leoomis aibbosus
Smallmouth bass Microoterus dolomieui
Tench Tinca tinca
Warmouth Leoomis aulosus
Weather loach Misaurnus anaif/icaudatus
White craooie Pomoxis annu/aris
Yellow oerch Perea flavescens
Notes)
1. Source: Kerwin, 2001.
p:\boeing renton\ly14160240 lot 9 lake-stream study\reports\slss
report\figs_ tbls\tables_slss_051614.docx
Status
Uncommon stravs
Can exceed 1,000 oer vear
Extinct
Cornman
Common
Rarelv cauaht
Rare, mav be extinct
No observed renroduction
Rarelv cauaht
Extinct
Abundant
Unknown
Intermittent
Trioloids onlv
Extinct
Extinct
Common
Abundant
Common
Abundant
No observed renroduction
No observed reoroduction
Uncommon
Abundant
AMEC
Page4
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Renton, Washington
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Renton, Washington
Date: 05/16/14 Project: LY14160240
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Boeing Parking Lot 9 Project
Renton, Washington
-"-By:RES Date: 05/15/14
Figure 5
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APPENDIX A
I Site Photographs
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APPENDIX A
PHOTOGRAPHS OF WEST BANK OF LOWER CEDAR RIVER
Boeing Parking Lot 9 Project
Renton, Washington
Photo 1
Photo 2
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APPENDIX A
PHOTOGRAPHS OF WEST BANK OF LOWER CEDAR RIVER
Boeing Parking Lot 9 Project
Renton, Washington
Photo 3 West bank of lower Ce d ar Ri ve r immediate!
P hoto 4
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APPENDIX A
PHOTOGRAPHS OF WEST BANK OF LOWER CEDAR RIVER
Boeing Parking Lot 9 Project
Renton , Washington
Pho to 5 southwest from east bank of lower Cedar River at west bank
Photo 6 Patch of reed cana
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APPENDIX A
PHOTOGRAPHS OF WEST BANK OF LOWER CEDAR RIVER
Boeing Parking Lot 9 Project
Renton, Washington
Photo 7
Photo 8 Horseta il on west bank of lower Cedar Ri ver
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APPENDIX A
PHOTOGRAPHS OF WEST BANK OF LOWER CEDAR RIVER
Boeing Parking Lot 9 Project
Renton , Washington
Photo 9
Photo 10
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