HomeMy WebLinkAboutTalbot-Paccar Stream StudyStream Study
Talbot-Paccar 115-kV Re-Conductor
Pole Replacement
Renton, Washington
for
Puget Sound Energy
February 9, 2018
Stream Study
Talbot-Paccar 115-kV Re-Conductor
Pole Replacement
Renton, Washington
for
Puget Sound Energy
February 9, 2018
1101 South Fawcett Avenue, Suite 200
Tacoma, Washington 98402
253.383.4940
Stream Study
Talbot-Paccar 115-kV Re-Conductor
Pole Replacement
Renton, Washington
File No. 0186-722-02
February 9, 2018
Prepared for:
Puget Sound Energy, Inc.
355 110th Avenue NE, PSE-04E
Bellevue, Washington 98004
Attention: Victoria Wilson
Prepared by:
GeoEngineers, Inc.
1101 South Fawcett Avenue, Suite 200
Tacoma, Washington 98402
253.383.4940
Jennifer L. Dadisman, PWS
Biologist
Joseph O. Callaghan, MS, PWS
Associate Biologist
JLD:JOC:leh
Disclaimer: Any electronic form, facsimile or hard copy of the original document (email, text, table, and/or figure), if provided, and any attachments are only a copy
of the original document. The original document is stored by GeoEngineers, Inc. and will serve as the official document of record.
February 9, 2018 | Page i
File No. 0186-722-02
Table of Contents
INTRODUCTION ........................................................................................................................................... 1
Project Location ..................................................................................................................................... 1
Site Description ...................................................................................................................................... 1
PROJECT DESCRIPTION ............................................................................................................................. 1
DATA REVIEW ............................................................................................................................................. 2
FIELD INVESTIGATION ................................................................................................................................ 2
Stream Delineation ................................................................................................................................ 2
Geomorphic (Soil) Indicators ................................................................................................................. 3
Biologic (Vegetation Indicators) ............................................................................................................ 3
REGULATORY CONTEXT ............................................................................................................................. 5
HABITAT ASSESSMENT ............................................................................................................................. 5
CONCLUSIONS ............................................................................................................................................ 5
LIMITATIONS ............................................................................................................................................... 5
REFERENCES ............................................................................................................................................. 6
LIST OF FIGURES
Figure 1. Vicinity Map
Figure 2. OHWM and Shoreline Jurisdiction Location
APPENDICES
Appendix A. Data Review Maps
Appendix B. Site Photographs
Figures B-1 through B-4. Site Photographs
February 9, 2018 | Page 1
File No. 0186-722-02
INTRODUCTION
GeoEngineers, Inc. (GeoEngineers) was contracted by Puget Sound Energy (PSE) to provide a stream study
for the Talbot-Paccar 115 kV Re-Conductor Pole Replacement project for a portion of the project located
within the shoreline jurisdiction of the Cedar River. The project area for this report is located approximately
100 feet southeast of the Interstate-405 (I-405) Cedar River crossing in the City of Renton, Washington
(Figure 1 – Vicinity Map). This report was completed to address requirements of the City of Renton (City)
Municipal Code (RMC) 4-3-090 (Shoreline Master Program Regulations), as they apply to the replacement
of three wood poles and an aerial conductor crossing of the Cedar River. RMC 4-3-050B(1)(d) specifies that
Type S waterbodies, which include the Cedar River, are not regulated under the Critical Areas Regulations
(RMC 4-3-050) and are instead reviewed under the Shoreline Master Program and associated permitting.
Project Location
The poles and aerial crossing that are the focus of this report are located along the existing 1.5-mile
Talbot-Paccar 115 kV transmission line corridor located within the City of Renton. The site investigated for
this report is approximately 100 feet southeast of the I-405 Cedar River crossing. See Figure 1 for the
site location on the Vicinity Map. The project area is located within Section 17 of Township 23 North and
Range 05 East of the Willamette Meridian (W.M.). Figure 2 depicts the 200-foot shoreline jurisdiction and
project vicinity. The regulated portion of the project under this assessment includes the replacement of
three wood poles within 200 feet of the ordinary high water mark (OHWM) of the Cedar River and the
replacement of the aerial conductor crossing.
Site Description
The existing condition of the Cedar River shoreline, in the vicinity of the project, is a developed city park
with buildings, passive park areas, and paved and unpaved driveways and walkways. Vegetation adjacent
to the Cedar River (within approximately 50 to 75 feet of the OHWM) is predominantly composed of black
cottonwood (Populus balsamifera), red alder (Alnus rubra), bigleaf maple (Acer macrophyllum), snowberry
(Symphocarpus albus), Himalayan blackberry (Rubus armeniacus), Japanese knotweed (Polygonum
cuspidatum) and sword fern (Polystichum munitum). The three poles to be replaced are all located within
areas devoid of native vegetation. Poles 1/13 and 1/14 are located within a grass area between a paved
pedestrian path and unpaved informal path within Renton’s Cedar River Park approximately 100 to 150
feet from the OHWM of the river. Pole 1/15 is also located in the park on the opposite side of the river
approximately 70 feet from the river bank situated in an open area at the end of a gravel access path that
follows the transmission corridor.
PROJECT DESCRIPTION
Poles 1/13, 1/14 and 1/15 are being replaced with wood poles and replacement conductor will be installed
along the transmission corridor, including the Cedar River crossing. Poles 1/13 and 1/14 are existing 70-
and 80-foot-tall wood poles respectively that will be replaced with the same sized poles. Pole 1/15 is an
existing 85-foot-tall wood pole that will be replaced with a 90-foot wood pole. The poles will be accessed
from existing paved and gravel pathways and no native vegetation will be removed, however minor
trimming may be necessary to facilitate construction. Poles will be replaced in generally the same
location as the existing poles. Pole holes will be augered to a depth of approximately 10 feet and a
width of 3 to 4 feet. Removed pole holes will be backfilled with native soils
February 9, 2018 | Page 2
File No. 0186-722-02
and restored to pre-construction conditions. Replacement poles will be backfilled with crushed gravel to set
in wetter soils or installed within a caisson. Appropriate stormwater best management practices (BMPs) will
be used based on a project temporary erosion and sediment control (TESC) plan and input from an onsite
Certified Erosion and Sediment Control Lead (CESCL) inspector. Conductor stringing sites will be located
south of Pole 1/14 and north of 1/16 (outside the shoreline jurisdiction), resulting in replacement
conductor being aerially pulled in place. No work will occur in water or below the OHWM of the river.
Work will begin after the necessary permit approvals are obtained. The entire 1.5-mile transmission line
reconductor project will take approximately 2 months to complete and work is expected to begin September
2018. The value of the work within the shoreline jurisdiction is approximately $375,000.
DATA REVIEW
Environmental maps of the project area were collected and reviewed as part of an analysis of published
data. There are two riverine habitat systems mapped within the vicinity of the Cedar River crossing: The
Cedar River and a low area used for access to Pole 1/15 on the north side of the Cedar River
(USFWS, 2016). The low area used for access had no evidence of water flow at the time of the site visit and
no definable bed or bank was identified, therefore, a stream/riverine habitat system was not identified. The
United States Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil
Survey indicates one soil type in the vicinity of the Cedar River where the poles are located: Riverwash
(USDA-NRCS, 2016). National Wetlands Inventory (NWI) and soil survey information are included in
Appendix A.
Additional information was obtained from the Washington State Department of Natural Resources (DNR)
Forest Practices Application Review System (FPARS), and Washington State Department of Fish and Wildlife
(WDFW) Priority Habitat and Species (PHS) mapping application (DNR, 2015; WDFW, 2016). Both PHS and
DNR map the Cedar River at the project site (DNR, 2015; WDFW, 2016). DNR types the Cedar River as a
Type S (Shoreline) waterbody and PHS maps Chinook salmon (Oncorhynchus tshawtscha), coho salmon
(Oncorhynchus kisutch), kokanee (Oncorhynchus nerka), sockeye salmon (Oncorhynchus nerka), bull trout
(Salvelinus malma), resident cutthroat trout (Oncorhynchus clarkia) and winter steelhead trout
(Oncorhynchus mykiss) within the river (DNR, 2015; WDFW, 2016).
FIELD INVESTIGATION
Since OHWM indicators are typically established during spring and winter high water, a GeoEngineers
biologist conducted a field assessment on December 22, 2016 to characterize stream features within the
project area and delineate the OHWM of the Cedar River. Representative photographs of the site have been
included within this report in Appendix B. Figure 2 depicts the regulated shoreline environment of the Cedar
River within the project area.
Stream Delineation
The OHWM is used to define the jurisdictional boundary of streams, rivers and Shoreline Areas
(RMC 4-3-090(B)(3), Washington Administrative Code [WAC] 222-16-031), state Shoreline Management
Act regulations (Revised Code of Washington [RCW] 90.58.030(2)(c)), and federal Clean Water Act (CWA)
regulations (USACE, 2005a). Methods used to delineate the OHWM in the field were consistent with local,
February 9, 2018 | Page 3
File No. 0186-722-02
state and federal protocols, including Regulatory Guidance Letter No. 05-05 (USACE, 2005b) and the
Washington State manual “Determining the Ordinary High Water Mark on Streams in Washington State”
(Olson and Stockdale, 2010). The OHWM of the Cedar River was evaluated based on geomorphic (soil
indicators) and biologic (vegetation indicators) conditions.
Geomorphic (Soil) Indicators
A hydrologic assessment was not conducted since the channel geomorphology is simple, with a single
channel, defined banks and evidence of channel migration was not observed. The Cedar River has an
average flow of 660 cubic feet per second (CFS) and during the field investigation the flows ranged from
528 to 554 CFS. Throughout the investigation area, the river channel is constrained by steep slopes to the
south and gravel bars to the north. These stream characteristics are common in high energy system, which
are typically found to experience loss (scour and erosion) and gain (deposits) of sediments.
The north Cedar River OHWM was delineated based on wrack accumulation, sediment deposits, topography
(slight break on the gentle slope), presence of clean cobbles and vegetation growth patterns. The southern
OHWM of the Cedar River was delineated based on wrack accumulation, exposed tree roots, clean cobbles,
topography and scour.
Biologic (Vegetation Indicators)
The existing condition of the Cedar River shoreline in the vicinity of the project is a developed city park with
buildings, passive park areas, and paved and unpaved driveways and walkways. The existing vegetation is
predominantly composed of black cottonwood, red alder, bigleaf maple, snowberry, Himalayan blackberry,
Japanese knotweed and sword fern. Growth patterns of vegetation and type of vegetation were used in
part, to identify the OHWM of the Cedar River.
February 9, 2018 | Page 4
File No. 0186-722-02
TABLE 2. CEDAR RIVER
Cedar River – Information
Location 100 feet southeast of the
I-405 Cedar River crossing.
Looking southeast along the north bank of the Cedar River
from under the transmission line crossing.
WRIA 8 - Cedar/Sammamish
Local Jurisdiction City of Renton
DNR Stream Type Shoreline
Shoreline
Jurisdiction2
200 feet (shoreline
jurisdiction)
Vegetation
Conservation
Buffer2
100 feet (vegetation)
Average Channel
Width 130 feet3
Gradient 0 to 3 percent
Duration Perennial
Description Summary
Documented Fish
Use
Chinook salmon, coho salmon, kokanee, sockeye salmon, bull trout, resident cutthroat trout
and winter steelhead trout
Connectivity Connected to Lake Washington and Puget Sound
Channel
Description
Broad riverbed in confined, created channel, limited channel complexity, primarily gravel
substrate
Riparian Condition
The existing condition of the Cedar River shoreline in the vicinity of the project is a developed
city park with buildings, passive park areas, and paved and unpaved driveways and
walkways. Vegetation adjacent to the Cedar River (within approximately 50 to 75 feet of the
OHWM) is predominantly composed of black cottonwood, red alder, bigleaf maple,
snowberry, Himalayan blackberry, Japanese knotweed and sword.
Notes:
1. DNR FPARS Maps Cedar River as being a shoreline of the state at the project area. WDFW maps this portion of the stream as
containing salmonid species.
2. RMC 4-3-090 (B.3) and Table 4-3-090D7a (Shoreline Bulk Standards)
3. Average Channel Width derived from GoogleEarth measurements.
4. Washington State Department of Fish and Wildlife (WDFW) PHS data (WDFW 2016).
February 9, 2018 | Page 5 File No. 0186-722-02
REGULATORY CONTEXT
The City of Renton code regulates development within 200 feet of the OHWM of the Cedar River under its
Shoreline Master Program (RMC 4-3-090). Three poles to be replaced are located within the Shoreline
jurisdiction (1/13, 1/14 and 1/15). The proposed pole and conductor replacement is exempt from a
substantial development permit as repair and maintenance of an existing development. Two of the
replacement poles are located within the 100-foot Vegetation Conservation Buffer (RMC 4-3-090D(7)(a)).
The code specifies that the buffer area “shall be managed to provide the maximum ecological functions
feasible.” However, the poles are located within open areas devoid of significant vegetation, as the
vegetative buffer adjacent to the river is approximately 50 feet wide in the vicinity of the existing poles. No
native vegetation will be removed as part of this proposal. The existing wood poles will be replaced with
wood poles of the same or similar height and configuration. The project will not result in net loss of
ecological function of the shoreline environment (RMC 4-3-090D(2)).
HABITAT ASSESSMENT
Bull trout, Puget Sound Chinook salmon, and Puget Sound steelhead may utilize the Cedar River. In
addition, the Cedar River provides critical habitat for Chinook salmon and steelhead. However, the project
will not involve in-water work and construction activities will not disturb in-water habitat. Therefore, none of
the species or associated habitat will be impacted by the project. (RMC 4-3-090D(2)(c)).
CONCLUSIONS
PSE is proposing to replace three existing poles within 200 feet of the Cedar River within the Talbot-Paccar
115 kV transmission corridor. The project area for this report is located approximately 100 feet southeast
of the I-405 Cedar River crossing within the City of Renton, Washington. The purpose of this report is to
document existing conditions within the shoreline environment of the Cedar River and demonstrate that
the proposed repair and maintenance transmission line pole and conductor replacement will not have
environmental, habitat or aesthetic impacts within the shoreline environment.
LIMITATIONS
GeoEngineers has prepared this Stream Study in general accordance with the scope and limitations of our
proposal. Within the limitations of scope, schedule and budget, our services have been executed in
accordance with the generally accepted practices for OHWM delineation in this area at the time this report
was prepared. No warranty or other conditions, express or implied, should be understood.
This report has been prepared for the exclusive use of Puget Sound Energy, authorized agents and
regulatory agencies following the described methods and information available at the time of the work. No
other party may rely on the product of our services unless we agree in advance to such reliance in writing.
The information contained herein should not be applied for any purpose or project except the one originally
contemplated.
The applicant is advised to contact all appropriate regulatory agencies (local, state and federal) prior to
design or construction of any development to obtain necessary permits and approvals.
February 9, 2018 | Page 6 File No. 0186-722-02
REFERENCES
City of Renton. 2011. Shoreline Master Program Update. Available at http://rentonwa.gov/business/
default.aspx?id=15508.
Code of Federal Regulations. 2005. Title 50: Wildlife and Fisheries. Section 402.02 – Definitions.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetland and Deep Water
Habitats of the United States. Performed for Office of Biological Services, Fish and Wildlife Service,
U.S. Department of the Interior, Washington, D.C.
Environmental Laboratory. 1987. U.S. Army Corps of Engineers Wetlands Delineation Manual. Technical
Report Y-87-1, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.
Olson, P. and E. Stockdale. 2010. Determining the Ordinary High Water Mark on Streams in Washington
State. Second Review Draft. Washington State Department of Ecology, Shorelands & Environmental
Assistance Program, Lacey, Washington. Ecology Publication # 08-06-001.
Renton, City of. Renton Municipal Code, Title 4-3-090 – Shoreline Master Program Regulations. Available
at: http://www.codepublishing.com/wa/renton/
United States Army Corps of Engineers (USACE). 2005a. Regulatory Guidance Letter 05-02: Expiration of
Geographic Jurisdictional Determinations of Waters of the United States. Available at:
http://www.usace.army.mil/Portals/2/docs/civilworks/RGLS/rgl05-02.pdf
United States Army Corps of Engineers (USACE). 2005b. Regulatory Guidance Letter, No. 05-05: Ordinary
High Water Mark Identification. Available at: http://www.usace.army.mil/Portals/2/docs/
civilworks/RGLS/rgl05-05.pdf.
United States Army Corps of Engineers (USACE). 2010. Regional Supplement to the Corps of Engineers
Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, ed. J.S. Wakeley, R. W.
Lichvar, and C.V. Noble. ERDC/EL TR-10-3. Vicksburg, MS: U.S. Army Engineer Research and
Development Center.
United States Department of Agriculture – National Resource Conservation Service. 2013. Web Soil Survey.
Available at: http://websoilsurvey.nrcs.usda.gov/app/.
United States Department of Agriculture - Natural Resources Conservation Service. 2010. Field Indicators
of Hydric Soils in the United States. Version 7.0. L.M. Vasilas, G.W. Hurt, and C.V. Noble (eds.).
USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils.
United States Fish and Wildlife Service (USFWS). 2016. Wetlands Mapper. Available at:
http://www.fws.gov/wetlands/Data/mapper.html.
Washington State Administrative Code. 2007. WAC 173-22-030. Definitions. Available at:
http://apps.leg.wa.gov/WAC/default.aspx?cite=173-22-030.
Washington State Administrative Code. 1997. WAC 222-16-030. Water Typing System. Available at:
http://apps.leg.wa.gov/WAC/default.aspx?cite=222-16-030.
February 9, 2018 | Page 7 File No. 0186-722-02
Washington State Administrative Code. 1997. WAC 222-16-031. Interim Water Typing System. Available at:
http://apps.leg.wa.gov/WAC/default.aspx?cite=222-16-0301.
Washington State Department of Fish and Wildlife (WDFW). 2016. Priority Habitats and Species (PHS) on
the Web. Available at: http://wdfw.wa.gov/mapping/phs/.
Washington State Department of Natural Resources (DNR). 2015. Forest Practices Application Review
System (FPARS) Mapping Application. Available at: https://fortress.wa.gov/dnr/protectiongis/
fpamt/index.html?maptheme=Water Type&extent=-14385498.437950825,5552851.0512961
87,-12532664.872318646,6457865.466192433.
FIGURES
µ
SITE
Vicinity Map
Figure 1
Puget Sound EnergyTalbot-Paccar 115 kV RebuildRenton, Washington
2,000 2,0000
Feet
Data Source: Mapbox Open Street Map, 2016
Notes:1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intended to assist in showing features discussed in an attached document. GeoEngineers, Inc. cannot guarantee the accuracy and content of electronic files. The master file is stored by GeoEngineers, Inc. and will serve as the official record of this communication.
Projection: NAD 1983 UTM Zone 10N
P:\0\0186722\GIS\MXD\018672202_F1_VicinityMap.mxd Date Exported: 02/09/18 by cchelf
125 0 125
Feet
Notes:1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intended to assist in showing features discussed in an attached document. GeoEngineers, Inc. cannot guarantee the accuracy and content of electronic files. The master file is stored by GeoEngineers, Inc. and will serve as the official record of this communication.
Projection: NAD 1983 StatePlane Washington North FIPS 4601 Feet
Legend
!!Replacement Pole
Delineated OHWM
Vegetation Conservation Buffer (100 Feet)
Shoreline Jurisdiction (200 Feet)
FEMA Flood Zones - Regulatory
Zones A, AE, AH, AO
P:\0\0186722\GIS\MXD\018672201_F02_OHWMandBufferLocation.mxd Date Exported: 02/09/18 by cchelf !!
!!
!!I-405Ced
a
r
R
i
v
e
r
Ce
d
a
r
R
i
v
e
r
T
r
a
i
l
W
a
l
k
1/13
1/14
1/15
Data Source: Aerial from ESRI 2016, Flood data from FEMA µShoreline Jurisdiction and OHWM Location
Puget Sound EnergyTalbot-Paccar 115 kV RebuildRenton, Washington
Figure 2
1/13
APPENDICES
APPENDIX A Data Review Maps
«k
«k«k
«k
«k
«k
«k
«k
«k
«k
«k
E
E
E
E
E E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
200
400200200200
S Cedar River
F
X
X
NF U
FNUUNU NN
NNN
NFN NFNNFNI-405SR-900
SR-515SR
-
1
6
9
SR-900CO
1729204
1728244
1729222
1728262
1729108
1728148
1728282
1729220
1728284
1728260
1728188
1729200
1729128
1729202
17282421728240
1728168
1729224
1728264
1728280
17
8
20
18
16
7 9
2119
S
SDate: 12/28/2016 Time: 12:31:47 PMNAD 83Contour Interval: 40 Feet
Application #: ________________________
FOREST PRACTICE ACTIVITY MAP
TOWNSHIP 23 NORTH HALF 0, RANGE 05 EAST (W.M.) HALF 0, SECTION 17
1,000 Feet
Please use the legend from the FPA Instruction or provide a list of symbols used.
®
Wetlands
Sources: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan,Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand),
Estuarine and Marine Deepwater
Estuarine and Marine Wetland
Freshwater Emergent Wetland
Freshwater Forested/Shrub Wetland
Freshwater Pond
Lake
Other
Riverine
December 28, 2016
0 0.06 0.120.03 mi
0 0.095 0.190.0475 km
1:3,520
This page was produced by the NWI mapperNational Wetlands Inventory (NWI)
This map is for general reference only. The US Fish and Wildlife Service is not responsible for the accuracy or currentness of the base data shown on this map. All wetlands related data should be used in accordance with the layer metadata found on the Wetlands Mapper web site.
Soil Map—King County Area, Washington
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
12/28/2016
Page 1 of 35258650525870052587505258800525885052589005258950525900052586505258700525875052588005258850525890052589505259000560320560370560420560470560520560570
560320 560370 560420 560470 560520 560570
47° 28' 54'' N 122° 11' 58'' W47° 28' 54'' N122° 11' 44'' W47° 28' 41'' N
122° 11' 58'' W47° 28' 41'' N
122° 11' 44'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS84
0 50 100 200 300Feet
0 25 50 100 150Meters
Map Scale: 1:1,940 if printed on A portrait (8.5" x 11") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: King County Area, Washington
Survey Area Data: Version 12, Sep 8, 2016
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Aug 31, 2013—Oct 6,
2013
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Soil Map—King County Area, Washington
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
12/28/2016
Page 2 of 3
Map Unit Legend
King County Area, Washington (WA633)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
AkF Alderwood and Kitsap soils,
very steep
1.5 8.8%
AmC Arents, Alderwood material, 6
to 15 percent slopes
0.1 0.3%
Pc Pilchuck loamy fine sand 2.7 15.8%
Rh Riverwash 5.0 29.8%
Ur Urban land 6.1 35.8%
W Water 1.6 9.5%
Totals for Area of Interest 16.9 100.0%
Soil Map—King County Area, Washington
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
12/28/2016
Page 3 of 3
APPENDIX B Site Photographs
Figure
B-1
Site Photographs
Photograph 1. Cedar River at the south bank near I-405
Talbot-Paccar 115 kV Pole Replacement
Renton, Washington
0186-722-02 Date Exported: 12/29/16Photograph 2. Cedar River habitat along the south bank looking towards I-405.
Figure
B-2
Site Photographs
Photograph 3. The poles to be replaced, adjacent to the Cedar River are located within a park with a walking
trail. Photograph looks southeast towards pole 1/13.
Talbot-Paccar 115 kV Pole Replacement
Renton, Washington
0186-722-02 Date Exported: 12/29/16Photograph 4. Looking northwest, with Pole 1/13 on the left side of the photograph. The poles south of the Cedar River, within 200 feet of the OHWM are located within a park that is mowed and maintained. The Cedar
River is located on the right side of the photograph.
Figure
B-3
Site Photographs
Photograph 5. From the south bank looking north towards Pole 1/15.
Talbot-Paccar 115 kV Pole Replacement
Renton, Washington
0186-722-02 Date Exported: 12/29/16Photograph 6. From the north bank looking northwest towards I-405.
Figure
B-4
Site Photographs
Photograph 7. Looking southwest towards Pole 1/15 and the Cedar River.
Talbot-Paccar 115 kV Pole Replacement
Renton, Washington
0186-722-02 Date Exported: 12/29/16Photograph 8. From the north bank of the Cedar River looking east.