HomeMy WebLinkAboutTalbot-Paccar Stream and Wetland EvaluationFocused Stream and Wetland Evaluation
Talbot-Paccar 115-kV Re-Conductor
Pole Replacement
Renton, Washington
for
Puget Sound Energy
February 9, 2018
Focused Stream and Wetland Evaluation
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
Focused Stream and Wetland Evaluation
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
Site and Description .............................................................................................................................. 1
DATA REVIEW ............................................................................................................................................. 1
FIELD RESULTS .......................................................................................................................................... 2
Wetland, Stream and Shoreline Features ............................................................................................ 2
LOCAL PERMITTING DISCUSSION ............................................................................................................. 5
SUMMARY .................................................................................................................................................. 6
REFERENCES ............................................................................................................................................. 6
LIST OF FIGURES
Figure 1. Vicinity Map
Figure 2. Wetland and Stream Critical Areas
APPENDICES
Appendix A. Data Review Maps
Appendix B. Wetland Data Forms
Appendix C. Wetland Rating Forms
February 9, 2018| Page 1 File No. 0186-722-02
INTRODUCTION
As part of Puget Sound Energy’s (PSE’s) Talbot-Paccar Re-Conductor Project, two poles will be reframed
that are located within the buffer of a delineated wetland and mapped stream adjacent to Interstate 405
(I-405) and a commercial parking lot. The objective of this report is to provide critical area baseline
information in the vicinity of poles 0/13 and 0/14, as depicted on the attached map (Figure 2).
Site and Description
The site investigated for this report is in the vicinity of poles 0/13 and 0/14 which are located northeast of
the Talbot Road South and I-405 intersection. The project area is located within Section 20 Township 23
North and Range 05 East of the Willamette Meridian (W.M.).
The project area is located in the vicinity of several businesses and roadways. There was also evidence of
human and homeless activity in the project site when GeoEngineers, Inc. (GeoEngineers) conducted a site
visit. The area is fenced off from adjacent roadways and businesses, contains several transmission line
poles and a gravel access road that extends approximately 1,000 feet northeast from Talbot Road South.
Dominant vegetation in the adjacent wetland and buffer area consists of invasive species such as reed
canarygrass (Phalaris arundinacea) and Himalayan blackberry (Rubus armeniacus). Although not dominant
species, native vegetation species observed included red alder shrubs (Alnus rubra), willow species (Salix
species) and field horsetail (Equisetum arvense).
DATA REVIEW
Environmental maps of the project area were collected and analyzed as part of the review of published
data. The United States Fish and Wildlife Service (USFWS) National Wetlands Inventory (NWI) online mapper
(USFWS, 2017) depicts one palustrine emergent wetland system at the project site. The United States
Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey
indicates one soil type in the vicinity of the project where poles are located: Urban land (USDA-NRCS, 2017).
Urban land soils are not listed on the national hydric soils list (USDA-NRCS, 2015). NWI and soil survey
information are included in Appendix A.
The investigation area was fenced and has a gravel and cobble access
route. Photograph looks southwest in the southern end of the project.
The access route is dominated by grasses over compacted surfaces in
the northern end of the project. Photograph looks southwest in the
northern end of the project.
February 9, 2018| Page 2 File No. 0186-722-02
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, 2017; WDFW, 2017). Both PHS and
DNR map Rolling Hills Creek at the project site (DNR, 2017; WDFW, 2017). DNR types Rolling Hills Creek
as a Type F (Fishbearing) waterbody; however, PHS does not map priority or threatened and endangered
fish species within the creek at the project site (DNR, 2017; WDFW, 2017).
City of Renton maps were also reviewed and the maps depict a wetland and stream in the vicinity of the
project site (Appendix A).
FIELD RESULTS
A GeoEngineers biologist conducted a field investigation on February 10, 2017 to characterize wetland and
stream features in the project area. A total of two wetlands (Wetlands A and B) and one stream (Rolling
Hills Creek) were identified. GeoEngineers placed flagging to mark the wetland boundaries throughout the
project reach and global positioning system (GPS) points were taken of the wetland boundary flags, and
the Ordinary High Watermark (OHWM) locations. Due to evidence of the public accessing the stream, water
depth and confined nature of the stream (i.e. concrete wall and chain link fence on both sides), the OHWM
was marked with a GPS, but flags were not hung. Figure 2 depicts the project area and the delineated
wetland and stream.
Wetland, Stream and Shoreline Features
The delineation of wetlands and streams was conducted in accordance with guidelines presented in Renton
Municipal Code (RMC) Chapter 3 Environmental Regulations and Overlay Districts, Section 4-3-050, using
the United States Army Corps of Engineers (USACE) Wetlands Delineation Manual (Environmental
Laboratory, 1987) and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual:
Western Mountains, Valleys, and Coast Region (USACE, 2010).
The OHWM of streams is typically evaluated based on biologic (vegetation indicators) and geomorphic (soil
indicators) conditions. The stream in the project area however, is highly modified and influenced by human
activities. The stream appears to have been ditched through the project area and fully contained within
vertical concrete walls with chain link fences on either side of the creek. Therefore, the horizontal extent of
the OHWM of the stream is defined by the two concrete walls.
Tables 1 through 3 below summarize information regarding the wetland and stream features identified
during the field investigation. Two formal data sample plots on the site were established. The delineated
wetlands were rated using the 2014 Washington State Wetland Rating System for Western Washington
(Hruby, 2014) as specified in RMC Chapter 3, Section 4-3-050. Wetland data forms are included in
Appendix B and Wetland Rating Forms are included in Appendix C.
February 9, 2018| Page 3 File No. 0186-722-02
TABLE 1. WETLAND A
Wetland A - Information
Location Northeast of the Talbot Road
South and I-405 intersection
Wetland habitat closest to Pole 0/13. Wetland is at the base of the access road
and extends west to Rolling Hills Creek.
WRIA 9 – Duwamish -Green
Local
Jurisdiction City of Renton
Rating III (19 points)1
Buffer Width 100 Feet2
Size Approximately 1 acre
Cowardin
Class
Palustrine Scrub/Shrub and
Aquatic Bed
HGM Class Depressional
Description Summary
Vegetation
Aquatic Bed: Broadleaf cattail (Typha latifolia)
Herbaceous: Reed canarygrass (Phalarus arundinacea), soft rush (Juncus effusus), creeping
buttercup (Ranunculus repens), broadleaf cattail (Typha latifolia), and field horsetail
(Equisetum arvense).
Shrub: Willow species (Salix species), red alder (Alnus rubra), redosier dogwood (Cornus
sericea), salmonberry (Rubus spectabilis) and Himalayan blackberry (Rubus armeniacus).
Soils Meets criteria for hydric soil indicator Depleted Matrix (F3).
Hydrology Indicators: Saturated to the surface with standing water at the surface.
Source: Direct precipitation, surface runoff, high groundwater table.
Notes Depressional system located within a transmission line corridor and is associated with Rolling
Hills Creek.
Western Washington Wetland Rating Functions Summary (19 points total)
Water
Quality
7 points: Due to having a permanently flowing outlet, vegetation coverage, being within
150 feet of development (i.e., source of pollution), and being within a water resource inventory
area (WRIA) that has a total maximum daily load (TDML).
Hydrologic
7 points: Having a permanently flowing outlet with seasonal ponding and saturation,
vegetation coverage, receiving stormwater discharge and having documented flooding
downstream of the site.
Habitat
5 points: Due to having scrub/shrub and aquatic bed classes, low amount of habitat
interspersion, with snags. The system also abuts high intensity land uses. However, it is
adjacent to Rolling Hills Creek and is therefore adjacent to priority habitats.
Buffer
Condition
Regulatory buffers are highly disturbed as the wetland is surrounded by roadways and
businesses, therefore functional buffers are shown per RMC 4-4-050G(2) footnote 6.
Notes:
1. Wetland rating in accordance with Washington State Wetlands Rating System for Western Washington, (Hruby, 2014).
2. RMC Chapter 3 (Environmental Regulations and Overlay Districts), Section 4-3-050 (G) based on rating designation as a Category
III wetland that has 5 habitat functions points. The final buffer width is subject to approval by the jurisdictional authority.
February 9, 2018| Page 4 File No. 0186-722-02
TABLE 2. WETLAND B
Wetland B - Information
Location Northeast of the Talbot Road
South and I- 405 intersection
Wetland B is a slope wetland that appears to be fed from seeps coming out of the
hillside.
WRIA 9 – Duwamish -Green
Local
Jurisdiction City of Renton
Rating IV (15 points)1
Buffer Width 50 Feet2
Size Approximately 0.09 acre
Cowardin
Class Palustrine Emergent
HGM Class Slope
Description Summary
Vegetation
Herbaceous: Reed canarygrass (Phalarus arundinacea), soft rush (Juncus effusus), creeping
buttercup (Ranunculus repens), broadleaf cattail (Typha latifolia), Pacific water-dropwort
(Oenanthe sarmentosa) and field horsetail (Equisetum arvense).
Shrub: Willow species (Salix species) and red alder (Alnus rubra)
Soils Hydric soils assumed due to dominance of hydrophytic vegetation. In addition soils were fill
soils from the adjacent road.
Hydrology Indicators: Seeps observed, FAC Neutral test, ground position.
Source: Seeps, direct precipitation, surface runoff, high groundwater table.
Notes Sloping system located within a transmission line corridor. Appears to discharge into Wetland A
and eventually into Rolling Hills Creek.
Western Washington Wetland Rating Functions Summary (15 points total)
Water
Quality
6 points: Due to having gentle slope topography, vegetation coverage, being within 150 feet of
development (i.e., source of pollution), and being within a water resource inventory area (WRIA)
that has a total maximum daily load (TDML).
Hydrologic
5 points: Because less than 90 percent of the wetland has rigid vegetation, land uses within
150 feet upslope generate excess surface runoff, and having documented flooding
downstream of the site.
Habitat
4 points: Due to having an emergent vegetation class, having no habitat interspersion. The
system also abuts high intensity land uses. However, it is adjacent to Rolling Hills Creek and is
therefore adjacent to priority habitats.
Buffer
Condition
Regulatory buffers are highly disturbed as the stream is surrounded by roadways and
businesses, therefore functional buffers are shown per RMC 4-4-050G(2) footnote 6.
Notes:
1. Wetland rating in accordance with Washington State Wetlands Rating System for Western Washington, (Hruby, 2014).
2. RMC Chapter 3 (Environmental Regulations and Overlay Districts), Section 4-3-050 (G) based on rating designation as a Category
IV wetland. The final buffer width is subject to approval by the jurisdictional authority.
February 9, 2018| Page 5 File No. 0186-722-02
TABLE 3. ROLLING HILLS CREEK
Rolling Hills Creek – Information
Location
Northeast of the Talbot
Road South and I-405
intersection
Within the project area, the stream has been ditched and flows southwest.
WRIA 9 – Duwamish-Green
Local Jurisdiction City of Renton
DNR Stream Type F1
Buffer Width 115 feet2
Average Channel
Width Approximately 3 feet3
Gradient 0 to 2%
Duration Perennial
Description Summary
Documented Fish
Use
Although DNR maps this portion of the stream as Fishbearing, PHS data does not map trout
or salmonid fish use in this portion of Rolling Hills Creek4.
Connectivity
DNR maps Rolling Hills Creek as flowing north and west into the Black River. However, at the
time of the site visit the creek was flowing south. City of Renton Maps depict the stream as
flowing south and west, discharging into Springbrook Creek. Springbrook Creek discharges
into the Black River, which flows into the Green River, which becomes the Duwamish River
and eventually discharges into the Puget Sound.
Channel
Description Vegetation, sediments, gravels and sands.
Riparian/Buffer
Condition
Regulatory buffers are highly disturbed as the stream is surrounded by roadways and
businesses, therefore functional buffers are shown per RMC 4-4-050G(2) footnote 6.
Notes The stream has been ditched through the project area. Stream OHWM is defined by two
concrete walls with chain link fences on either side of the creek.
Notes:
1 Forest Practices Application Review System (FPARS) Mapping Application (DNR, 2017)
2 RMC Chapter 3 (Environmental Regulations and Overlay Districts), Section 4-3-050 (G) (Development Standards).
3 Average Channel Width derived from site observations.
4 Washington State Department of Fish and Wildlife (WDFW) PHS data (WDFW 2017).
LOCAL PERMITTING DISCUSSION
According to RMC Chapter 3 (Environmental Regulations and Overlay Districts), Section 4-3-050(2), normal
and routine maintenance and repair of utilities within stream and wetland critical areas buffers is a
permitted use for which the City will issue a Letter of Exemption. The proposed activities associated with
Poles 0/13 and 0/14 will consist of construction equipment access via an existing gravel pathway and
replacement of existing framing on the wood poles. No permanent impacts will occur within the critical area
buffers, as no ground disturbance is proposed beyond temporary access using an existing access path.
Therefore, mitigation is not required under RMC 4-3-050L.
February 9, 2018| Page 6 File No. 0186-722-02
SUMMARY
GeoEngineers was authorized to conduct wetland and stream delineation evaluation for the Talbot-Paccar
Re-Conductor project in the vicinity of poles 0/13 and 0/14. The proposed project is located northeast of
the Talbot Road South and I-405 intersection. A total of two wetlands (Wetlands A and B) and one stream
(Rolling Hills Creek) were identified within and adjacent to the transmission corridor. Wetland A meets the
criteria for a Category III wetland and will likely require a 100-foot buffer and Wetland B meets the criteria
for a Category IV wetland and will likely require a 50-foot buffer. Rolling Hills Creek is a mapped Type F
stream that will likely require a 115-foot buffer. Construction equipment will access the poles via an existing
gravel access pathway to reframe the existing poles. No permanent impacts to critical areas or their
associated buffers will occur as a result of this project, as there will be no ground disturbance as a result
of the pole repair and maintenance activities beyond temporary access using an existing path. Therefore,
mitigation is not required under RMC 4-3-050L.
REFERENCES
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.
GeoEngineers, Inc. 2017. Geotechnical and Critical Areas Evaluation, Talbot-Paccar 115-kV Re-Conductor
Pole Replacement in Renton, Washington. Prepared for Puget Sound Energy, Inc.
Hruby, T. 2014. Washington State Wetland Rating System for Western Washington: 2014 Update.
(Publication #14-06-029). Olympia, WA: Washington Department of Ecology.
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). 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 Army Corp of Engineers (USACE). 2016. Western Mountains, Valleys, and Coast 2016
Regional Wetland Plant List, US Army Corps of Engineers, Cold Regions Research and Engineering
Laboratory.
February 9, 2018| Page 7 File No. 0186-722-02
United States Department of Agriculture – National Resource Conservation Service. 2017. Web Soil Survey.
Available at: http://websoilsurvey.nrcs.usda.gov/app/.
United States Department of Agriculture – National Resource Conservation Service. 2015 National Hydric
Soils List. Updated December 2015. Available at: http://www.nrcs.usda.gov/wps/
PA_NRCSConsumption/download?cid=stelprdb1248596&ext=xlsx.
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). 2017. 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.
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 Department of Ecology. 1997. Washington State Wetlands Identification and Delineation
Manual. Publication #96-94. Olympia, Washington.
Washington State Department of Fish and Wildlife (WDFW). 2017. Priority Habitats and Species (PHS) on
the Web. Available at: http://wdfw.wa.gov/mapping/phs/.
Washington State Department of Natural Resources (DNR). 2017. 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
●(
●(
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0/13
0/14
0/15
T a lbot Rd SSam'sClubAcRdS Gra dy Wa yBerkshireA ptAcRdBensonRdSS/B I-405 Ra m p
Sam'sClubAcRd
Sam'sClubAcRdN/BI-405RampI-405 FWYI-405 FWY16015012011010090170140110100908070605040908013010070
304030Rolling Hills CreekRol
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ingHi
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T
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u
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Stream and Wetland Critical Areas
Pu g et Sou nd Energ yT a lbot-Pa cca r 115 kV Rebu ild Pole Repla cem entRenton, Wa sh ing ton
Figure 2
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100 0 100
Feet
Legend●(Pole to be Repa ired
PSE Rebu ild Alig nm ent
10 Foot Contou r
2 Foot Contou r
Site Access
GeoEng ineers Delinea ted Strea m
Renton Strea m
GeoEng ineers Delinea ted Wetla ndGeoEng ineers Wetla nd a nd Strea m Bu ffer
Notes:1. T h e loca tions of a ll fea tu res sh own a re a pproxim a te.2. T h is dra wing is for inform a tion pu rposes. It is intended to a ssist in sh owing fea tu res discu ssed in a n a tta ch eddocu m ent. GeoEng ineers, Inc. ca nnot g u a ra ntee th e a ccu ra cy a nd content of electronic files. T h e m a ster fileis stored by GeoEng ineers, Inc. a nd will serve a s th e officia l record of th is com m u nica tion.
Projection: NAD 1983 HARN Sta tePla ne Wa sh ing ton North FIPS 4601 Feet
P:\0\0186722\GIS\MXD\018672202_Strea m s_Wetla nds.m xd Da te Exported: 02/09/18 by cch elf
Data Source: US Fish and Wildlife, City of Renton, GeoEngineers Inc.Aerial from ESRI 2016,
APPENDICES
APPENDIX A Data Review Maps
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«k
«k
«k
«k «k«k
«k«k
«k
«k
E
EE
E
E
E
E
E
E
E
E
E
E
E
E
EE
E
E
E
200400200
200
200
40040
0
S Cedar River
N
X
N
FUU
NF UNNF
U
NN NNFNN NNNSR-
515 I-405SR-169
1728244
1728262
1728148
1728108 1728204
1728260
1728224
1728242
1728222
1728240
1728220
1728168
1728128
1728264
1728200 1728202
20
29
17
19 21
28
18 16
30 SFDate: 2/10/2017 Time: 1:32:36 PMNAD 83Contour Interval: 40 Feet
Application #: ________________________
FOREST PRACTICE ACTIVITY MAP
TOWNSHIP 23 NORTH HALF 0, RANGE 05 EAST (W.M.) HALF 0, SECTION 20
1,000 Feet
Please use the legend from the FPA Instruction or provide a list of symbols used.
®
Talbot-Paccar Project_ 0/13 and 0/14 Map
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
February 10, 2017
0 0.15 0.30.075 mi
0 0.3 0.60.15 km
1:11,463
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
2/10/2017
Page 1 of 3525759052576505257710525777052578305257890525795052580105258070525759052576505257710525777052578305257890525795052580105258070559630559690559750559810559870559930559990
559630 559690 559750 559810 559870 559930 559990
47° 28' 24'' N 122° 12' 31'' W47° 28' 24'' N122° 12' 13'' W47° 28' 7'' N
122° 12' 31'' W47° 28' 7'' N
122° 12' 13'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS84
0 100 200 400 600Feet
0 35 70 140 210Meters
Map Scale: 1:2,550 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
2/10/2017
Page 2 of 3
Map Unit Legend
King County Area, Washington (WA633)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
AgC Alderwood gravelly sandy
loam, 8 to 15 percent slopes
2.3 7.7%
BeD Beausite gravelly sandy loam,
15 to 30 percent slopes
0.0 0.1%
Ur Urban land 27.2 92.3%
Totals for Area of Interest 29.5 100.0%
Soil Map—King County Area, Washington
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
2/10/2017
Page 3 of 3
4,514 376
City of Renton Print map Template
This map is a user generated static output from an Internet mapping site and
is for reference only. Data layers that appear on this map may or may not be
accurate, current, or otherwise reliable.
None
2/10/2017
Legend
2560 128
THIS MAP IS NOT TO BE USED FOR NAVIGATION
Feet
Notes
256
WGS_1984_Web_Mercator_Auxiliary_Sphere
Information Technology - GIS
RentonMapSupport@Rentonwa.gov
City and County Boundary
Other
City of Renton
Addresses
Parcels
Streams (Classified)
Type S
Type F
Type Np
Type Ns
Wetlands
APPENDIX B Wetland Data Forms
Project/Site:City/County:Sampling Date:2/10/2017
Applicant/Owner:Puget Sound Energy State:WA Sampling Point:1
Investigator(s):J. Dadisman Section/Township/Range:Section 20, Township 23 North, Range 05 East
Landform (hillslope, terrace, etc.):Terrace Local Relief (concave, convex, none): Concave Slope (%):< 2
Subregion (LLR):A Lat:47.471773 Long:-122.206001 Datum:WGS 84
Soil Map Unit Name:Urban Land None
Are climatic/hydrologic conditions on the site typical for this time of year?(if no, explain in Remarks.)
Are significantly disturbed?Are "normal circumstances" present?
Are naturally problematic?(if needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS
Hydrophytic Vegetation Present?
Hydric Soil Present?
Weltand Hydrology Present?
VEGETATION - Use scientific names of plants.
Tree Stratum Absolute %
Cover
Dominant
Species?
Indicator
Status Dominance Test Worksheet:
Number of dominant Species
That are OBL, FACW, or FAC:2 (A)
Total Number of Dominant
0 = Total Cover Species Across All Strata:2 (B)
Sapling/Shurb Stratum 5 Y FAC Percent of dominant Species
That are OBL, FACW, or FAC:100 (A/B)
Prevalence Index Worksheet:
5 = Total Cover OBL Species 0 x 1 = 0
Herb Stratum FACW Species 85 x 2 = 170
85 Y FACW FAC Species 15 x 3 = 45
10 N FAC FACU Species 0 x 4 = 0
UPL Species 0 x 5 = 0
Column Totals:100 (A)215 (B)
2.15
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is ≤3.01
95 = Total Cover 4 - Morphological Adaptations1 (provide supporting data in
Woody Vine Stratum Remarks or on a separate sheet.
1.5 - Wetland Non-Vascular Plants1
2.Problem Hydrophytic Vegetation (Explain)
0 = Total Cover
0
Remarks:
11.
5.
6.
7.
8.
9.
10.
4.
5.
1. Reed canarygrass (Phalaris arundinacea)
2. Field horsetail (Equisetum arvense)
3.
4.
1Indicators of hydric soil and wetland hydrology must be present,
unless disturbed or problematic.
Is the sampled area within a
Wetland?
% Bare Ground in Herb Stratum
Total % Cover of:Multiply by:
Prevalence Index = B/A =
Hydrophytic Vegetation Present?
1.
2.
3.
WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region
Remarks:
RentonTalbot to Paccar Re-Conductor Project
NWI Classification:
4.
1. Red alder (Alnus rubra)
2.
3.
Yes No
Vegetation Soil Hydrology
Vegetation Soil HydrologyVegetationSoil
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
SOIL Sampling Point:1
Depth Redox Features
(inches)Color (moist)%Color (moist)%Type1 Loc2 Texture
0-16 10YR 4/1 95 10YR 4/6 5 C M loam
1Type: C=Concentration, D=Depletion, RM-Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
Histisol (A1)Sandy Redox (S5)2 cm Muck (A10)
Histic Epipedon (A2)Stripped Matrix (S6)Red Parent Material (TF2)
Black Histic (A3)Loamy Mucky Mineral (F1) (except MLRA 1)Very Shallow Dard Surface (TF12)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Other (Explain in Remarks)
Depleted Below Dark Surface (A11)Depleted Matrix (F3)
Thick Dark Surface (A12)Redox Dark Surface (F6)
Sandy Mucky Mineral (S1)Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4)Redox Depressions (F8)
Restrictive Layer (if present):Hydric Soil Present?
Type:
Depth (inches):
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA
High Water Table (A2) 1, 2, 4A, and 4B) 1, 2, 4A, and 4B)
Saturation (A3)Salt Crust (B11)Drainage Patterns (B10)
Water Marks (B1)Aquatic Invertebrates (B13)Dry-Season Water Table (C2)
Sediment Deposits (B2)Hydrogen Sulfide Odor (C1)Saturated Visible on Aerial Imagery (C9)
Drift Deposits (B3)Oxidized Rhizospheres along Living Roots (C3)Geomorphic Position (D2)
Algal Mat or Crust (B4)Presence of Reduction Iron (C4)Shallow Aquitard (D3)
Iron Deposits (B5)Recent Iron Reduction Tilled Soils (C6)FAC-Neutral Test (D5)
Surface Soil Cracks (B6)Stunted or Stressed Plants (D1) (LRR A)Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7)Other (Explain in Remarks)Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:Wetland Hydrology Present?
Surface Water Present?Depth (inches):
Water Table Present?Depth (inches):0
Saturation Present?Depth (inches):0
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
3Indicators of hydrophytic vegetation and wetland
hydrology must be present, unless disturbed or
problematic.
Remarks
Matrix
Yes No
Yes No
Yes No
Yes No
Yes No
Project/Site:City/County:Sampling Date:2/10/2017
Applicant/Owner:Puget Sound Energy State:WA Sampling Point:2
Investigator(s):J. Dadisman Section/Township/Range:Section 20, Township 23 North, Range 05 East
Landform (hillslope, terrace, etc.):Slope Local Relief (concave, convex, none): none Slope (%):< 5
Subregion (LLR):A Lat:47.471689 Long:-122.205955 Datum:WGS 84
Soil Map Unit Name:Urban Land None
Are climatic/hydrologic conditions on the site typical for this time of year?(if no, explain in Remarks.)
Are significantly disturbed?Are "normal circumstances" present?
Are naturally problematic?(if needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS
Hydrophytic Vegetation Present?
Hydric Soil Present?
Weltand Hydrology Present?
VEGETATION - Use scientific names of plants.
Tree Stratum Absolute %
Cover
Dominant
Species?
Indicator
Status Dominance Test Worksheet:
Number of dominant Species
That are OBL, FACW, or FAC:5 (A)
Total Number of Dominant
0 = Total Cover Species Across All Strata:5 (B)
Sapling/Shurb Stratum 10 Yes FAC Percent of dominant Species
40 Yes FAC That are OBL, FACW, or FAC:100 (A/B)
Prevalence Index Worksheet:
50 = Total Cover OBL Species 0 x 1 = 0
Herb Stratum FACW Species 15 x 2 = 30
5 Yes FACW FAC Species 55 x 3 = 165
5 Yes FAC FACU Species 0 x 4 = 0
10 Yes FACW UPL Species 0 x 5 = 0
Column Totals:70 (A)195 (B)
2.79
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is ≤3.01
20 = Total Cover 4 - Morphological Adaptations1 (provide supporting data in
Woody Vine Stratum Remarks or on a separate sheet.
1.5 - Wetland Non-Vascular Plants1
2.Problem Hydrophytic Vegetation (Explain)
0 = Total Cover
50
Remarks:
The plot was located adjacnet to the gravel/cobble access route. 50 percent of plot was vegetated
and 50 percent of plot consisted of the access route.
11.
5.
6.
7.
8.
9.
10.
4.
5.
1. Reed canarygrass (Phalaris arundinacea)
2. Field horsetail (Equisetum arvense)
3. Soft rush Juncus effusus)
4.
1Indicators of hydric soil and wetland hydrology must be present,
unless disturbed or problematic.
Is the sampled area within a
Wetland?
% Bare Ground in Herb Stratum
Total % Cover of:Multiply by:
Prevalence Index = B/A =
Hydrophytic Vegetation Present?
1.
2.
3.
WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region
Remarks:
RentonTalbot to Paccar Re-Conductor Project
NWI Classification:
4.
1. Red alder (Alnus rubra)
2. Himalayan blackberry (Rubus armeniacus)
3.
Yes No
Vegetation Soil Hydrology
Vegetation Soil HydrologyVegetationSoil
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
SOIL Sampling Point:2
Depth Redox Features
(inches)Color (moist)%Color (moist)%Type1 Loc2 Texture
0-3 10YR 3/2 100 loam
10YR 4/3 50
10YR 4/4 50
1Type: C=Concentration, D=Depletion, RM-Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
Histisol (A1)Sandy Redox (S5)2 cm Muck (A10)
Histic Epipedon (A2)Stripped Matrix (S6)Red Parent Material (TF2)
Black Histic (A3)Loamy Mucky Mineral (F1) (except MLRA 1)Very Shallow Dard Surface (TF12)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Other (Explain in Remarks)
Depleted Below Dark Surface (A11)Depleted Matrix (F3)
Thick Dark Surface (A12)Redox Dark Surface (F6)
Sandy Mucky Mineral (S1)Depleted Dark Surface (F7)
Sandy Gleyed Matrix (S4)Redox Depressions (F8)
Restrictive Layer (if present):Hydric Soil Present?
Type:
Depth (inches):
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA
High Water Table (A2) 1, 2, 4A, and 4B) 1, 2, 4A, and 4B)
Saturation (A3)Salt Crust (B11)Drainage Patterns (B10)
Water Marks (B1)Aquatic Invertebrates (B13)Dry-Season Water Table (C2)
Sediment Deposits (B2)Hydrogen Sulfide Odor (C1)Saturated Visible on Aerial Imagery (C9)
Drift Deposits (B3)Oxidized Rhizospheres along Living Roots (C3)Geomorphic Position (D2)
Algal Mat or Crust (B4)Presence of Reduction Iron (C4)Shallow Aquitard (D3)
Iron Deposits (B5)Recent Iron Reduction Tilled Soils (C6)FAC-Neutral Test (D5)
Surface Soil Cracks (B6)Stunted or Stressed Plants (D1) (LRR A)Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7)Other (Explain in Remarks)Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:Wetland Hydrology Present?
Surface Water Present?Depth (inches):
Water Table Present?Depth (inches):
Saturation Present?Depth (inches):
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
3-16 sand
3Indicators of hydrophytic vegetation and wetland
hydrology must be present, unless disturbed or
problematic.
Remarks
Matrix
Yes No
Yes No
Yes No
Yes No
Yes No
APPENDIX C Wetland Rating Forms
Wetland name or number A
Name of wetland (or ID #):Date of site visit:2/10/2017
Rated by Trained by Ecology? Yes No Date of training 6/3/2014
HGM Class used for rating Wetland has multiple HGM classes? Yes No
NOTE: Form is not complete with out the figures requested (figures can be combined ).Source of base aerial photo/map
OVERALL WETLAND CATEGORY III (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
Category II - Total score = 20 - 22 function based
X Category III - Total score = 16 - 19 on three
Category IV - Total score = 9 - 15 ratings (order of ratings
is not important )
M M 9 = H, H, HHL 8 = H, H, MMMTotal 7 = H, H, L 7 = H, M, M 6 = H, M, L 6 = M, M, M 5 = H, L, L 5 = M, M, L 4 = M, L, L 3 = L, L, L 2. Category based on SPECIAL CHARACTERISTICS of wetland
X
Depressional & Flats
RATING SUMMARY – Western Washington
List appropriate rating (H, M, L)
HydrologicImproving
Water Quality
MSite PotentialLandscape Potential
Habitat
M
FUNCTION
Wetland A
J. Dadisman
Coastal Lagoon
Interdunal
Value
Score Based on
Ratings 7 7 5 19
H
CHARACTERISTIC Category
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
None of the above
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 1 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure # Cowardin plant classes 1 Hydroperiods 1 Location of outlet (can be added to map of hydroperiods )1 Boundary of area within 150 ft of the wetland (can be added to another figure )1 Map of the contributing basin 2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website)4 Screen capture of list of TMDLs for WRIA in which unit is found (from web)5
Riverine Wetlands
Map of: Figure # Cowardin plant classes Hydroperiods Ponded depressions Boundary of area within 150 ft of the wetland (can be added to another figure ) Plant cover of trees, shrubs, and herbaceous plants Width of unit vs. width of stream (can be added to another figure ) Map of the contributing basin 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of: Figure # Cowardin plant classes Plant cover of trees, shrubs, and herbaceous plants Boundary of area within 150 ft of the wetland (can be added to another figure ) 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Map of: Figure # Cowardin plant classes Hydroperiods Plant cover of dense trees, shrubs, and herbaceous plants Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to another figure) Boundary of area within 150 ft of the wetland (can be added to another figure ) 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) Screen capture of list of TMDLs for WRIA in which unit is found (from web)
3
S 3.1, S 3.2 S 3.3
S 4.1
S 2.1, S 5.1
To answer questions: H 1.1, H 1.4 H 1.2 S 1.3
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2 L 3.3
H 2.1, H 2.2, H 2.3
R 3.1 R 3.2, R 3.3
To answer questions: L 1.1, L 4.1, H 1.1, H 1.4
H 1.2 R 1.1 R 2.4 R 1.2, R 4.2 R 4.1 R 2.2, R 2.3, R 5.2 H 2.1, H 2.2, H 2.3
L 1.2 L 2.2
D 1.1, D 4.1 D 2.2, D 5.2 D 4.3, D 5.3 H 2.1, H 2.2, H 2.3
D 3.1, D 3.2 D 3.3
To answer questions: H 1.1, H 1.4
To answer questions: D 1.3, H 1.1, H 1.4 D 1.4, H 1.2
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 2 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
For questions 1 -7, the criteria described must apply to the entire unit being rated.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO - go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine)YES - Freshwater Tidal Fringe
NO - go to 3 YES - The wetland class is Flats
If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
NO - go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?The wetland is on a slope (slope can be very gradual ),
The water leaves the wetland without being impounded.
NO - go to 5 YES - The wetland class is Slope
5. Does the entire wetland unit meet all of the following criteria?
The overbank flooding occurs at least once every 2 years.
NO - go to 6 YES - The wetland class is Riverine
NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding.
If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.
If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be
used to score functions for estuarine wetlands.
The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size;
The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks.
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep).
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river,
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit.
HGM Classification of Wetland in Western Washington
If hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to Question 8.
At least 30% of the open water area is deeper than 6.6 ft (2 m).
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 3 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
NOTES and FIELD OBSERVATIONS:
Salt Water Tidal Fringe and any otherclass of freshwater wetland
HGM class to use in ratingRiverineDepressionalLake Fringe
If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than
2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating.
RiverineTreat as ESTUARINE
Slope + Lake FringeDepressional + Riverine along streamwithin boundary of depressionDepressional + Lake FringeRiverine + Lake Fringe
NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area.
HGM classes within the wetland unit being ratedSlope + RiverineSlope + Depressional
Depressional
Depressional
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet.
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored.
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 4 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
D 1.1. Characteristics of surface water outflows from the wetland:
points = 3
points = 2
points = 1
points = 1
Yes = 4 No = 0
Wetland has persistent, ungrazed, plants > 95% of area points = 5Wetland has persistent, ungrazed, plants > ½ of area points = 3Wetland has persistent, ungrazed plants > 1/10 of area points = 1Wetland has persistent, ungrazed plants < 1/10 of area points = 0D 1.4. Characteristics of seasonal ponding or inundation:
This is the area that is ponded for at least 2 months. See description in manual.Area seasonally ponded is > ½ total area of wetland points = 4Area seasonally ponded is > ¼ total area of wetland points = 2Area seasonally ponded is < ¼ total area of wetland points = 0Total for D 1 Add the points in the boxes above 9
Rating of Site Potential If score is: 12 - 16 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
D 2.1. Does the wetland unit receive stormwater discharges?Yes = 1 No = 0 1
Yes = 1 No = 0D 2.3. Are there septic systems within 250 ft of the wetland?Yes = 1 No = 0 0
Source Yes = 1 No = 0Total for D 2 Add the points in the boxes above 2
Rating of Landscape Potential If score is: 3 or 4 = H 1 or 2 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 2 No = 0Total for D 3 Add the points in the boxes above 4
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
1
0
Water Quality Functions - Indicators that the site functions to improve water qualityD 1.0. Does the site have the potential to improve water quality?
2Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet.
Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet).
Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch.
2
D 2.0. Does the landscape have the potential to support the water quality function of the site?
DEPRESSIONAL AND FLATS WETLANDS
D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES if there is a TMDL for the basin in
which the unit is found )?
D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions ).D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes):
D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1 - D 2.3?
D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list?
D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants?
D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list?
D 3.0. Is the water quality improvement provided by the site valuable to society?
1
1
2
0
5
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 5 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
D 4.1. Characteristics of surface water outflows from the wetland:
points = 4
points = 2
points = 1
points = 0
Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3The wetland is a “headwater” wetland points = 3Wetland is flat but has small depressions on the surface that trap water points = 1Marks of ponding less than 0.5 ft (6 in)points = 0
The area of the basin is less than 10 times the area of the unit points = 5The area of the basin is 10 to 100 times the area of the unit points = 3The area of the basin is more than 100 times the area of the unit points = 0Entire wetland is in the Flats class points = 5Total for D 4 Add the points in the boxes above 8
Rating of Site Potential If score is: 12 - 16 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
D 5.1. Does the wetland unit receive stormwater discharges?Yes = 1 No = 0 1D 5.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate excess runoff?Yes = 1 No = 0
Yes = 1 No = 0Total for D 5 Add the points in the boxes above 3
Rating of Landscape Potential If score is: 3 = H 1 or 2 = M 0 = L Record the rating on the first page
points = 2
points = 1Flooding from groundwater is an issue in the sub-basin.points = 1
points = 0There are no problems with flooding downstream of the wetland.points = 0
Yes = 2 No = 0Total for D 6 Add the points in the boxes above 1
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
DEPRESSIONAL AND FLATS WETLANDS
D 6.0. Are the hydrologic functions provided by the site valuable to society?
The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has damaged human or natural resources (e.g., houses or salmon redds):Flooding occurs in a sub-basin that is immediately down-gradient of unit.Surface flooding problems are in a sub-basin farther down-gradient.
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradationD 4.0. Does the site have the potential to reduce flooding and erosion?
2
Wetland is a depression or flat depression with no surface water leaving it (no outlet)
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletWetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch
3
D 5.0. Does the landscape have the potential to support hydrologic function of the site?
1
1D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at >1 residence/ac, urban, commercial, agriculture, etc.)?
The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why
1
0
3
D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of
the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry, the
deepest part.
D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of
upstream basin contributing surface water to the wetland to the area of the wetland unit itself.
D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best
matches conditions around the wetland unit being rated. Do not add points. Choose the highest
score if more than one condition is met.
D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan?
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 6 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
HABITAT FUNCTIONS - Indicators that site functions to provide important habitatH 1.0. Does the site have the potential to provide habitat?
Aquatic bed 4 structures or more: points = 4Emergent3 structures: points = 2Scrub-shrub (areas where shrubs have > 30% cover)2 structures: points - 1Forested (areas where trees have > 30% cover)1 structure: points = 0
If the unit has a Forested class, check if :
H 1.2. Hydroperiods
Permanently flooded or inundated 4 or more types present: points = 3Seasonally flooded or inundated 3 types present: points = 2Occasionally flooded or inundated 2 types present: points = 1Saturated only 1 types present: points = 0Permanently flowing stream or river in, or adjacent to, the wetlandSeasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 pointsH 1.3. Richness of plant species
If you counted:> 19 species points = 25 - 19 species points = 1< 5 species points = 0H 1.4. Interspersion of habitats
These questions apply to wetlands of all HGM classes.
The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the Forested polygon
1
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the
Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be
combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller
than 2.5 ac. Add the number of structures checked.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams in this row are
HIGH = 3 points
2
Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of
hydroperiods ).
3
Count the number of plant species in the wetland that cover at least 10 ft2.Different patches of the same species can be combined to meet the size threshold and you do
not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple
loosestrife, Canadian thistle 1
Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you have four or more plant classes or three classes and open
water, the rating is always high.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 7 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
H 1.5. Special habitat features:
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long)Standing snags (dbh > 4 in) within the wetland
Total for H 1 Add the points in the boxes above 9
Rating of Site Potential If Score is: 15 - 18 = H 7 - 14 = M 0 - 6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat function of the site?H 2.1 Accessible habitat (include only habitat that directly abuts wetland unit ).
Calculate:1 % undisturbed habitat + (0 % moderate & low intensity land uses / 2 ) = 1%
If total accessible habitat is:> 1/3 (33.3%) of 1 km Polygon points = 320 - 33% of 1 km Polygon points = 210 - 19% of 1 km Polygon points = 1< 10 % of 1 km Polygon points = 0H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate:10 % undisturbed habitat + (0 % moderate & low intensity land uses / 2 ) = 10%
Undisturbed habitat > 50% of Polygon points = 3Undisturbed habitat 10 - 50% and in 1-3 patches points = 2Undisturbed habitat 10 - 50% and > 3 patches points = 1Undisturbed habitat < 10% of 1 km Polygon points = 0H 2.3 Land use intensity in 1 km Polygon: If> 50% of 1 km Polygon is high intensity land use points = (-2)
≤ 50% of 1km Polygon is high intensity points = 0Total for H 2 Add the points in the boxes above -1
Rating of Landscape Potential If Score is: 4 - 6 = H 1 - 3 = M < 1 = L Record the rating on the first page
Site meets ANY of the following criteria:points = 2It has 3 or more priority habitats within 100 m (see next page)
It is mapped as a location for an individual WDFW priority species
Site has 1 or 2 priority habitats (listed on next page) with in 100m points = 1Site does not meet any of the criteria above points = 0
Rating of Value If Score is: 2 = H 1 = M 0 = L Record the rating on the first page
0
1
-2
H 3.0. Is the habitat provided by the site valuable to society?H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose
only the highest score that applies to the wetland being rated .
It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists)
It is a Wetland of High Conservation Value as determined by the Department of Natural Resources
1
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata )
Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m)Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees
that have not yet weathered where wood is exposed )At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians )
2
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 8 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:http://wdfw.wa.gov/conservation/phs/list/
Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere.
WDFW Priority Habitats
Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE : This
question is independent of the land use between the wetland unit and the priority habitat.
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report ).
Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest.
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp.
Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see
web link above ).
Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other.
Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above ).
Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources.
Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of
relatively undisturbed are in WDFW report – see web link on previous page ).
Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 9 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
Wetland Type Category
Check off any criteria that apply to the wetland. List the category when the appropriate criteria are met.
SC 1.0. Estuarine WetlandsDoes the wetland meet the following criteria for Estuarine wetlands?The dominant water regime is tidal,Vegetated, andWith a salinity greater than 0.5 pptYes - Go to SC 1.1 No = Not an estuarine wetlandSC 1.1.
Yes = Category I No - Go to SC 1.2SC 1.2.Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)SC 2.1.
Yes - Go to SC 2.2 No - Go to SC 2.3SC 2.2.Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?Yes = Category I No = Not WHCVSC 2.3.Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdfYes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCVSC 2.4.
Yes = Category I No = Not WHCV
SC 3.0. Bogs
SC 3.1.
Yes - Go to SC 3.3 No - Go to SC 3.2SC 3.2.
Yes - Go to SC 3.3 No = Is not a bogSC 3.3.
Yes = Is a Category I bog No - Go to SC 3.4
SC 3.4.
Yes = Is a Category I bog No = Is not a bog
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website?
Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value?
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the
wetland based on its functions .Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile?
Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond?
Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4?
NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog.Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy?
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are
Spartina , see page 25)At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un-mowed grassland.The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 10 WSDOT Adapted Form - March 2, 2015
Wetland name or number A
SC 4.0. Forested Wetlands
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal LagoonsDoes the wetland meet all of the following criteria of a wetland in a coastal lagoon?
Yes - Go to SC 5.1 No = Not a wetland in a coastal lagoonSC 5.1. Does the wetland meet all of the following three conditions?
The wetland is larger than 1/10 ac (4350 ft2)Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
In practical terms that means the following geographic areas:Long Beach Peninsula: Lands west of SR 103Grayland-Westport: Lands west of SR 105Ocean Shores-Copalis: Lands west of SR 115 and SR 109Yes - Go to SC 6.1 No = Not an interdunal wetland for ratingSC 6.1.
Yes = Category I No - Go to SC 6.2SC 6.2.Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger?Yes = Category II No - Go to SC 6.3SC 6.3.
Yes = Category III No = Category IV
Category of wetland based on Special CharacteristicsIf you answered No for all types, enter “Not Applicable” on Summary Form
The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocksThe lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to
be measured near the bottom )
Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you
answer YES you will still need to rate the wetland based on its functions.Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more.Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm).
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100).At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un-mowed grassland.
Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland
based on its habitat functions.
Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)?
Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac?
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 11 WSDOT Adapted Form - March 2, 2015
100 0 100
Feet
Notes: 1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intendedto assist in showing features discussed in an attached document.GeoEngineers, Inc. cannot guarantee the accuracy and contentof electronic files. The master file is stored by GeoEngineers, Inc.and will serve as the official record of this communication.
Projection: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet
Legend
!Outlet / Culvert
GeoEngineers Delineated Stream
City of Renton Stream
Wetland
Wetland buffer (150 feet)
Aquatic Bed
Scrub / Shrub
Permanently Ponded
Seasonally Ponded
Saturated
P:\0\0186722\GIS\MXD\018672202_F01_Wetland_A_Detail.mxd Date Exported: 02/17/17 by glohrmeyer !!Aquatic Bed
Remaining Area isScrub / Shrub
Rolling Hills Creek
Outlet / Culvert
CulvertWetland A
I-405 FWY
I-405 FWYAccess RdSam's Club A
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Data Source: Aerial from ESRI
µ
Detail View: Wetland A
Puget Sound EnergyTalbot-Paccar 115kV Re-conductor Pole ReplacementRenton, Washington
Figure C-1
Figure C-2
Screen Capture of Contributing Basin Map
Talbot to Paccar Re-conductor Project
Renton, Washington
0186-722-02 Date Exported: 02/16/2017 https://streamstatsags.cr.usgs.gov/streamstats/
1,000 0 1,000
Feet
Notes: 1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intendedto assist in showing features discussed in an attached document.GeoEngineers, Inc. cannot guarantee the accuracy and contentof electronic files. The master file is stored by GeoEngineers, Inc.and will serve as the official record of this communication.
Projection: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet
Legend
Wetland
Wetland Buffer (1 km)
Accessible habitat
Undisturbed habitat
P:\0\0186722\GIS\MXD\018672202_F03_Wetland_A_1KMCircle.mxd Date Exported: 02/17/17 by glohrmeyer S 2nd St
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µ1 KM Circle: Wetland A
Puget Sound EnergyTalbot-Paccar 115kV Re-conductor Pole ReplacementRenton, Washington
Figure C-3
Figure C-4
Screen Capture of Ecology 303 (d) Map
Talbot to Paccar Re-conductor Project
Renton, Washington
0186-722-02 Date Exported: 02/16/2017 https://fortress.wa.gov/ecy/waterqualityatlas/map.aspx?CustomMap=y&RT=0&Layers=23,29&Filters=n,n,n,n
Figure C-5
Ecology TMDL for WRIA 9
Talbot to Paccar Re-conductor Project
Kent, Washington
0186-722-02 Date Exported: 02/16/2017 http://www.ecy.wa.gov/programs/wq/tmdl/TMDLsbyWria/tmdl-wria09.html
Wetland name or number B
Name of wetland (or ID #):Date of site visit:2/10/2017
Rated by Trained by Ecology? Yes No Date of training 6/3/2014
HGM Class used for rating Wetland has multiple HGM classes? Yes No
NOTE: Form is not complete with out the figures requested (figures can be combined ).Source of base aerial photo/map
OVERALL WETLAND CATEGORY IV (based on functions or special characteristics )
1. Category of wetland based on FUNCTIONS
Category I - Total score = 23 - 27 Score for each
Category II - Total score = 20 - 22 function based
Category III - Total score = 16 - 19 on three
X Category IV - Total score = 9 - 15 ratings (order of ratings
is not important )
L L 9 = H, H, HML 8 = H, H, MMMTotal 7 = H, H, L 7 = H, M, M 6 = H, M, L 6 = M, M, M 5 = H, L, L 5 = M, M, L 4 = M, L, L 3 = L, L, L 2. Category based on SPECIAL CHARACTERISTICS of wetland
X
Wetland B
J. Dadisman
Coastal Lagoon
Interdunal
Value
Score Based on
Ratings 6 5 4 15
H
Improving
Water Quality
LSite PotentialLandscape Potential M
FUNCTION
None of the above
CHARACTERISTIC Category
Estuarine
Wetland of High Conservation Value
Bog
Mature Forest
Old Growth Forest
Habitat
Slope
RATING SUMMARY – Western Washington
List appropriate rating (H, M, L)
Hydrologic
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 1 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Maps and Figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: Figure # Cowardin plant classes Hydroperiods Location of outlet (can be added to map of hydroperiods ) Boundary of area within 150 ft of the wetland (can be added to another figure ) Map of the contributing basin 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Riverine Wetlands
Map of: Figure # Cowardin plant classes Hydroperiods Ponded depressions Boundary of area within 150 ft of the wetland (can be added to another figure ) Plant cover of trees, shrubs, and herbaceous plants Width of unit vs. width of stream (can be added to another figure ) Map of the contributing basin 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of: Figure # Cowardin plant classes Plant cover of trees, shrubs, and herbaceous plants Boundary of area within 150 ft of the wetland (can be added to another figure ) 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Map of: Figure # Cowardin plant classes 1 Hydroperiods 1 Plant cover of dense trees, shrubs, and herbaceous plants 1 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to another figure) Boundary of area within 150 ft of the wetland (can be added to another figure )1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website)3 Screen capture of list of TMDLs for WRIA in which unit is found (from web)4
1
2
To answer questions: D 1.3, H 1.1, H 1.4 D 1.4, H 1.2 D 1.1, D 4.1 D 2.2, D 5.2 D 4.3, D 5.3 H 2.1, H 2.2, H 2.3
D 3.1, D 3.2 D 3.3
To answer questions: H 1.1, H 1.4 H 1.2 R 1.1 R 2.4 R 1.2, R 4.2 R 4.1 R 2.2, R 2.3, R 5.2 H 2.1, H 2.2, H 2.3
L 1.2 L 2.2
L 3.1, L 3.2 L 3.3
H 2.1, H 2.2, H 2.3
R 3.1 R 3.2, R 3.3
To answer questions: L 1.1, L 4.1, H 1.1, H 1.4
S 3.1, S 3.2 S 3.3
S 4.1
S 2.1, S 5.1
To answer questions: H 1.1, H 1.4 H 1.2 S 1.3
H 2.1, H 2.2, H 2.3
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 2 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
For questions 1 -7, the criteria described must apply to the entire unit being rated.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO - go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine)YES - Freshwater Tidal Fringe
NO - go to 3 YES - The wetland class is Flats
If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
NO - go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?The wetland is on a slope (slope can be very gradual ),
The water leaves the wetland without being impounded.
NO - go to 5 YES - The wetland class is Slope
5. Does the entire wetland unit meet all of the following criteria?
The overbank flooding occurs at least once every 2 years.
NO - go to 6 YES - The wetland class is Riverine
NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding.
If hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to Question 8.
HGM Classification of Wetland in Western Washington
If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.
If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be
used to score functions for estuarine wetlands.
The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size;
The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks.
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep).
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river,
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit.
At least 30% of the open water area is deeper than 6.6 ft (2 m).
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 3 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
NO - go to 7 YES - The wetland class is Depressional
NO - go to 8 YES - The wetland class is Depressional
Riverine
ESTUARINE
NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area.
HGM classes within the wetland unit being ratedSlope + RiverineSlope + Depressional
If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than
2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating.
Salt Water Tidal Fringe and any otherclass of freshwater wetland
HGM class to use in ratingRiverineDepressionalLake FringeDepressional
Depressional
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet.
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored.
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland.
Treat as
Slope + Lake FringeDepressional + Riverine along streamwithin boundary of depressionDepressional + Lake FringeRiverine + Lake Fringe
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 4 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Slope is 1% or less points = 3Slope is > 1% - 2%points = 2Slope is > 2% - 5%points = 1Slope is greater than 5%points = 0
Yes = 3 No = 0
Dense, uncut, herbaceous plants > 90% of the wetland area points = 6Dense, uncut, herbaceous plants > ½ of area points = 3Dense, woody, plants > ½ of area points = 2Dense, uncut, herbaceous plants > ¼ of area points = 1Does not meet any of the criteria above for plants points = 0Total for S 1 Add the points in the boxes above 2
Rating of Site Potential If score is: 12 = H 6 - 11 = M 0 - 5 = L Record the rating on the first page
Yes = 1 No = 0
Other Sources Yes = 1 No = 0Total for S 2 Add the points in the boxes above 1
Rating of Landscape Potential If score is: 1 - 2 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Yes = 1 No = 0
Yes = 2 No = 0Total for S 3 Add the points in the boxes above 4
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
SLOPE WETLANDS
S 2.2. Are there other sources of pollutants coming into the wetland that are not listed in question S 2.1?0
S 1.0. Does the site have the potential to improve water quality?S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in
elevation for every 100 ft of horizontal distance )
2
S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions ):0
S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants:Choose the points appropriate for the description that best fits the plants in the wetland. Dense
means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or
mowed and plants are higher than 6 in.0
S 2.0. Does the landscape have the potential to support the water quality function of the site?S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in land uses that generate pollutants?1
Water Quality Functions - Indicators that the site functions to improve water quality
S 3.0. Is the water quality improvement provided by the site valuable to society?S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list?1
1
2
S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue?
At least one aquatic resource in the basin is on the 303(d) list.S 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality? Answer YES if there is a TMDL for the basin in
which the unit is found ?
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 5 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1All other conditions points = 0
Rating of Site Potential If score is: 1 = M 0 = L Record the rating on the first page
Yes = 1 No = 0
Rating of Landscape Potential If score is: 1 = M 0 = L Record the rating on the first page
S 6.1. Distance to the nearest areas downstream that have flooding problems:
points = 2Surface flooding problems are in a sub-basin farther down-gradient points = 1No flooding problems anywhere downstream points = 0
Yes = 2 No = 0Total for S 6 Add the points in the boxes above 1
Rating of Value If score is: 2 - 4 = H 1 = M 0 = L Record the rating on the first page
NOTES and FIELD OBSERVATIONS:
SLOPE WETLANDS
The sub-basin immediately down-gradient of site has flooding problems that result in damage to human or natural resources (e.g., houses or salmon redds)1
S 6.0. Are the hydrologic functions provided by the site valuable to society?
1
S 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan?0
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosionS 4.0. Does the site have the potential to reduce flooding and stream erosion?S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose the points appropriate for the description that best fits conditions in the wetland. Stems of plants
should be thick enough (usually > 1 /8 in), or dense enough, to remain erect during surface flows.0
S 5.0. Does the landscape have the potential to support hydrologic functions of the site?S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land uses or cover that generate excess surface runoff?
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 6 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
HABITAT FUNCTIONS - Indicators that site functions to provide important habitatH 1.0. Does the site have the potential to provide habitat?
Aquatic bed 4 structures or more: points = 4Emergent3 structures: points = 2Scrub-shrub (areas where shrubs have > 30% cover)2 structures: points - 1Forested (areas where trees have > 30% cover)1 structure: points = 0
If the unit has a Forested class, check if :
H 1.2. Hydroperiods
Permanently flooded or inundated 4 or more types present: points = 3Seasonally flooded or inundated 3 types present: points = 2Occasionally flooded or inundated 2 types present: points = 1Saturated only 1 types present: points = 0Permanently flowing stream or river in, or adjacent to, the wetlandSeasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 pointsH 1.3. Richness of plant species
If you counted:> 19 species points = 25 - 19 species points = 1< 5 species points = 0H 1.4. Interspersion of habitats
These questions apply to wetlands of all HGM classes.
The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the Forested polygon
0
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the
Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be
combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller
than 2.5 ac. Add the number of structures checked.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams in this row are
HIGH = 3 points
0
Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of
hydroperiods ).
0
Count the number of plant species in the wetland that cover at least 10 ft2.Different patches of the same species can be combined to meet the size threshold and you do
not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple
loosestrife, Canadian thistle 1
Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you have four or more plant classes or three classes and open
water, the rating is always high.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 7 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
H 1.5. Special habitat features:
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long)Standing snags (dbh > 4 in) within the wetland
Total for H 1 Add the points in the boxes above 1
Rating of Site Potential If Score is: 15 - 18 = H 7 - 14 = M 0 - 6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat function of the site?H 2.1 Accessible habitat (include only habitat that directly abuts wetland unit ).
Calculate:1 % undisturbed habitat + (0 % moderate & low intensity land uses / 2 ) = 1%
If total accessible habitat is:> 1/3 (33.3%) of 1 km Polygon points = 320 - 33% of 1 km Polygon points = 210 - 19% of 1 km Polygon points = 1< 10 % of 1 km Polygon points = 0H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate:10 % undisturbed habitat + (0 % moderate & low intensity land uses / 2 ) = 10%
Undisturbed habitat > 50% of Polygon points = 3Undisturbed habitat 10 - 50% and in 1-3 patches points = 2Undisturbed habitat 10 - 50% and > 3 patches points = 1Undisturbed habitat < 10% of 1 km Polygon points = 0H 2.3 Land use intensity in 1 km Polygon: If> 50% of 1 km Polygon is high intensity land use points = (-2)
≤ 50% of 1km Polygon is high intensity points = 0Total for H 2 Add the points in the boxes above -1
Rating of Landscape Potential If Score is: 4 - 6 = H 1 - 3 = M < 1 = L Record the rating on the first page
Site meets ANY of the following criteria:points = 2It has 3 or more priority habitats within 100 m (see next page)
It is mapped as a location for an individual WDFW priority species
Site has 1 or 2 priority habitats (listed on next page) with in 100m points = 1Site does not meet any of the criteria above points = 0
Rating of Value If Score is: 2 = H 1 = M 0 = L Record the rating on the first page
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see
H 1.1 for list of strata )
0
It is a Wetland of High Conservation Value as determined by the Department of Natural Resources
1
0
1
-2
H 3.0. Is the habitat provided by the site valuable to society?H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose
only the highest score that applies to the wetland being rated .
It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists)
Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m)Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees
that have not yet weathered where wood is exposed )At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians )
It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan
Check the habitat features that are present in the wetland. The number of checks is the number
of points.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 8 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see
web link above ).
Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other.
Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above ).
Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources.
Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of
relatively undisturbed are in WDFW report – see web link on previous page ).
Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long.
Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs.
Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere.
Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest.
WDFW Priority Habitats
Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE : This
question is independent of the land use between the wetland unit and the priority habitat.
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report ).
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:http://wdfw.wa.gov/conservation/phs/list/
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp.
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 9 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
Wetland Type Category
Check off any criteria that apply to the wetland. List the category when the appropriate criteria are met.
SC 1.0. Estuarine WetlandsDoes the wetland meet the following criteria for Estuarine wetlands?The dominant water regime is tidal,Vegetated, andWith a salinity greater than 0.5 pptYes - Go to SC 1.1 No = Not an estuarine wetlandSC 1.1.
Yes = Category I No - Go to SC 1.2SC 1.2.Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)SC 2.1.
Yes - Go to SC 2.2 No - Go to SC 2.3SC 2.2.Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?Yes = Category I No = Not WHCVSC 2.3.Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdfYes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCVSC 2.4.
Yes = Category I No = Not WHCV
SC 3.0. Bogs
SC 3.1.
Yes - Go to SC 3.3 No - Go to SC 3.2SC 3.2.
Yes - Go to SC 3.3 No = Is not a bogSC 3.3.
Yes = Is a Category I bog No - Go to SC 3.4
SC 3.4.
Yes = Is a Category I bog No = Is not a bog
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are
Spartina , see page 25)At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un-mowed grassland.The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands.
Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website?
Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value?
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the
wetland based on its functions .Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile?
Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond?
Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4?
NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog.Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy?
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 10 WSDOT Adapted Form - January 14, 2015
Wetland name or number B
SC 4.0. Forested Wetlands
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal LagoonsDoes the wetland meet all of the following criteria of a wetland in a coastal lagoon?
Yes - Go to SC 5.1 No = Not a wetland in a coastal lagoonSC 5.1. Does the wetland meet all of the following three conditions?
The wetland is larger than 1/10 ac (4350 ft2)Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
In practical terms that means the following geographic areas:Long Beach Peninsula: Lands west of SR 103Grayland-Westport: Lands west of SR 105Ocean Shores-Copalis: Lands west of SR 115 and SR 109Yes - Go to SC 6.1 No = Not an interdunal wetland for ratingSC 6.1.
Yes = Category I No - Go to SC 6.2SC 6.2.Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger?Yes = Category II No - Go to SC 6.3SC 6.3.
Yes = Category III No = Category IV
Category of wetland based on Special CharacteristicsIf you answered No for all types, enter “Not Applicable” on Summary Form
Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more.Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm).
The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocksThe lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to
be measured near the bottom )
Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you
answer YES you will still need to rate the wetland based on its functions.
At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un-mowed grassland.
Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland
based on its habitat functions.
Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)?
Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac?
The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100).
Wetland Rating System for Western WA: 2014 UpdateRating Form - Effective January 1, 2015 11 WSDOT Adapted Form - January 14, 2015
50 0 50
Feet
Notes: 1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intendedto assist in showing features discussed in an attached document. GeoEngineers, Inc. cannot guarantee the accuracy and contentof electronic files. The master file is stored by GeoEngineers, Inc.and will serve as the official record of this communication.
Projection: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet
Legend
GeoEngineers Delineated Stream
City of Renton Stream
Wetland
Wetland buffer (150 feet)P:\0\0186722\GIS\MXD\018672202_F01_Wetland_B_Detail.mxd Date Exported: 02/16/17 by glohrmeyer !!
Rolling Hills Creek
Entire wetland hasemergent vegetationEntire wetlandis saturated
No dense orrigid vegatation
Wetland B
Benson Rd S
I-405 FWY
Sam's Club AcRd
S/B I-405 Ramp
Data Source: Aerial from ESRI
µ
Detail View: Wetland B
Puget Sound EnergyTalbot-Paccar 115kV Re-conductor Pole ReplacementRenton, Washington
Figure C-6
1,000 0 1,000
Feet
Notes: 1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intendedto assist in showing features discussed in an attached document. GeoEngineers, Inc. cannot guarantee the accuracy and contentof electronic files. The master file is stored by GeoEngineers, Inc.and will serve as the official record of this communication.
Projection: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet
Legend
Wetland
Wetland Buffer (1 km)
Accessible habitat
Undisturbed habitat
P:\0\0186722\GIS\MXD\018672202_F02_Wetland_B_1KMCircle.mxd Date Exported: 02/16/17 by glohrmeyer S 2nd St
MainAveSS 3rd St HouserW aySSWSunset Blvd
Talbot Rd SS G rad yW ayOa
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SW Grady Way
BensonDrSSR 167I-40 5 F W Y
Data Source: Aerial from ESRI
µ1 KM Circle: Wetland B
Puget Sound EnergyTalbot-Paccar 115kV Re-conductor Pole ReplacementRenton, Washington
Figure C-7
Figure C-8
Screen Capture of Ecology 303 (d) Map
Talbot to Paccar Re-conductor Project
Renton, Washington
0186-722-02 Date Exported: 02/16/2017 https://fortress.wa.gov/ecy/waterqualityatlas/map.aspx?CustomMap=y&RT=0&Layers=23,29&Filters=n,n,n,n
Figure C-9
Ecology TMDL for WRIA 9
Talbot to Paccar Re-conductor Project
Kent, Washington
0186-722-02 Date Exported: 02/16/2017 http://www.ecy.wa.gov/programs/wq/tmdl/TMDLsbyWria/tmdl-wria09.html