HomeMy WebLinkAboutCritical Areas Report 801044007CRITICAL AREAS REPORT
1000 West Egg & I Road
Jefferson County, Washington
Prepared for
Tom Gault
1426 Magazine Street
New Orleans, Louisiana 70130
(504) 523-1789
January 2023
Prepared by
Ecological Land Services
1157 3rd Avenue, Suite 220A • Longview, WA 98632
(360) 578-1371 • Project Number 3855.01
Critical Areas Report Ecological Land Services, Inc.
Tom Gault i January 17, 2023
SIGNATURE PAGE
The information in this report was compiled and prepared under the supervision and direction of
the undersigned.
Joanne Bartlett, SPWS
Professional Biologist
Megan Mill
Biologist
Critical Areas Report Ecological Land Services, Inc.
Tom Gault ii January 17, 2023
TABLE OF CONTENTS
INTRODUCTION ....................................................................................................................................................... 1
SITE DESCRIPTION ................................................................................................................................................. 1
METHODOLOGY ...................................................................................................................................................... 2
VEGETATION ............................................................................................................................................................ 2
SOILS ........................................................................................................................................................................... 3
HYDROLOGY ............................................................................................................................................................ 4
CRITICAL AREA INVENTORIES .......................................................................................................................... 5
CRITICAL AREAS SUMMARY .............................................................................................................................. 6
LIMITATIONS ............................................................................................................................................................ 7
REFERENCES ............................................................................................................................................................ 8
TABLES (IN TEXT)
Table 1. Critical Areas Summary .................................................................................................................. 7
FIGURES AND PHOTOPLATES
Figure 1 Vicinity Map
Figure 2 Existing Conditions Map
Figure 3 Proposed Conditions Map
Figure 4 NRCS Soil Survey Map
Figure 5 WDNR FPAMT
Figure 6 USFWS National Wetlands Inventory Map
Figure 7 Pierce County Critical Areas Map
Figure 8 Wetland Rating Form - 150’ Offset
Figure 9 Wetland Rating Form - 1 KM Offset
Figure 10 Wetland Rating Form - 303(d) and TMDLs
Photoplate Site Photos
APPENDIX A – ROUTINE ONSITE WETLAND DETERMINATION DATA FORMS
APPENDIX B – WETLAND RATING FORMS
APPENDIX C – ROUTINE DETERMINATION METHOD AND PLANT INDICATOR DEFINITIONS
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 1 January 17, 2023
INTRODUCTION
Ecological Land Services, Inc. (ELS) was contracted by Tom Gault to complete a critical areas
delineation and report for the purpose of upgrading the existing onsite cabin and installing a septic
system within the northeast portion of the site. The project site is located within Jefferson County
Parcel 801044007 at 1000 West Egg & I Road in Chimacum, Washington, within a portion of
Section 4, Township 28 North, Range 1 West of the Willamette Meridian (Figure 1). ELS
delineated the onsite wetland and streams on December 5, 2022. This report has been prepared in
accordance with the Jefferson County Code (JCC), Title 18 Unified Development Code; Chapter
18.22 Critical Areas (2022).
SITE DESCRIPTION
The site is approximately 5.02-acres accessed by West Egg & I Road in Chimacum, Washington.
The site is zoned as Rural Residential (RR-10), and is surrounded by residential properties to the
north and east, and undeveloped forestland to south and west. West Egg and I Road enters the site
from the northern boundary and continues south along the easternmost portion before veering
offsite to the east. A gravel driveway extends west from the top of West Egg & I road and leads to
a historic cabin located within the northern portion of the site. Topography within the site is
relatively flat within the northern portion, and gently slopes up from the central portion of the site
to the southern site boundary. The majority of the site is forested, save the northeastern most
portion that contains the gravel drive and cabin (Figure 2).
One wetland (Wetland A) was identified and categorized within the site. Wetland A is situated in
a depression within the eastern portion of the site, along the western side of West Egg & I Road.
Wetland A outlets to Stream A (Photoplate 1, Photos 1 and 2). Wetland A is an emergent and
scrub-shrub system that is seasonally ponded with a permanently flowing stream adjacent to the
wetland.
Two streams (Stream A and Stream B) were identified within the site. Stream A enters the site at
the northwest corner and flows in a southeasterly direction, eventually flowing through a 24-inch
culvert located under West Egg & I Road (Photoplate 1, Photos 2 and 4). Stream B enters the site
from the western boundary and flows east before it discharges to Stream A (Photoplate 1, Photo
3). Stream A and Stream B are both non-fish habitat, perennial (Type Np) streams. Stream A’s
channel is approximately one to two feet wide and composed of sand with small cobble. Stream A
contained three to five inches of flowing water at the time of the site visit. The banks of Stream A
are sloped, but undercut in areas, and vegetated with native species that provide significant
vegetative cover. Stream B’s channel is approximately one foot wide and composed of silt and
sand. Stream B contained two to four inches of flowing water at the time of the site visit. The
banks of Stream B are sloped and vegetated with native species that provide significant vegetative
cover.
A narrow drainage swale was located in the southeast portion of the site. The drainage appeared
to originate from an upland seep, flowing northeast and dispersing into Wetland A.
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 2 January 17, 2023
METHODOLOGY
WETLAND METHODOLOGY
The site was evaluated for the presence of wetlands using the Routine Determination Method
according to the U.S. Army Corps of Engineers’ 1987 Wetland Delineation Manual and the
Regional Supplement to the Corps of Engineers’ Wetland Delineation Manual (Environmental
Laboratory 1987); Western Mountains, Valleys, and Coast Region (Version 2.0) (Corps 2010).
The Routine Determination Method and defining wetland criteria are discussed further in
Appendix A. Wetlands are regulated as “Waters of the United States” by the U.S. Army Corps of
Engineers (Corps) and as “Waters of the State” by the Washington Department of Ecology
(Ecology), and locally by Jefferson County.
OWHM METHODOLOGY
The ordinary high water mark (OHWM) delineation was conducted following RCW 90.58.030 and
Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in
Washington State (Ecology 2016).
ELS biologists evaluated the site on December 5, 2022 for the presence of critical areas including
streams, wetlands, and priority habitats. Prior to conducting the site visit, ELS reviewed current
and historic aerial photographs of the site, and consulted online databases for soil, wetland,
topography, priority habitat, and habitat conservation areas. There was a small amount of snow on
the ground at the time of the site visit. Areas of the site with dense tree cover were free of snow.
ELS identified and delineated one wetland within the eastern portion of the site. Vegetation,
hydrology, and soil data was collected at three test plots to verify the wetland boundaries
(Appendix A). ELS identified and delineated both sides of the OHWM for each of the two streams
within the northern portion of the site. The OHWM’s were determined through scour and changes
in vegetation and substrate. A narrow drainage swale was located in the southeast portion of the
site. The wetland boundary, stream OHWM, drainage, and test plot locations were mapped using
a handheld Global Positioning System (GPS) unit with submeter accuracy (Figure 2).
VEGETATION
WETLAND VEGETATION
The majority of the site is forested with native deciduous and coniferous trees and shrubs, save the
northeast portion. The northeast portion of the site was recently cleared of Himalayan blackberry,
and it currently contains various grasses and weeds. There is relatively low invasive cover
throughout the rest of the site, aside from an area within the central portion of the site that contains
a large patch of Himalayan blackberry.
The plant indicator status following the plant scientific name is defined by the National Wetland
Plant List Indicator Rating Definitions (Corps 2012) and can be found in Appendix C.
Scrub-shrub species within the wetland consisted of salmonberry (Rubus spectabilis, FAC), and
emergent species within the wetland consisted of creeping buttercup (Ranunculus repens, FAC),
water parsley (Oenanthe sarmentosa, OBL), stinging nettle (Urtica dioica, FAC), piggyback plant
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 3 January 17, 2023
(Tolmiea menziesii, FAC), and common horsetail (Equisetum arvense, FAC). Invasives species
within the wetland consisted of reed canarygrass (Phalaris arundinacea, FACW) and Himalayan
blackberry (Rubus bifrons, FAC); however, these species were not dominant.
UPLAND VEGETATION
Forested species within the upland consisted of red alder (Alnus rubra, FAC), Western red cedar
(Thuja plicata, FAC), and Western hemlock (Tsuga heterophylla, FACU). Scrub-shrub species
within the upland consisted of salmonberry, Indian plum (Oemleria cerasiformis, FACU), and red
huckleberry (Vaccinium parvifolium, FACU). Emergent species within the upland consisted of
sword fern (Polystichum munitum, FACU), piggyback plant, stinging nettle, common horsetail,
lady fern (Athyrium cyclosorum, FAC), and trailing blackberry (Rubus ursinus, FACU). Invasives
species within the upland consisted of reed canarygrass (Phalaris arundinacea, FACW),
Himalayan blackberry (Rubus bifrons, FAC), English holly (Ilex aquifolium, FACU), and English
ivy (Hedera helix, FACU); however, these species were not dominant.
OHWM VEGETATION
Forested species along the OHWM of the onsite streams consisted primarily of red alder and
Western red cedar. Scrub-shrub species along the OHWM of the onsite streams consisted primarily
of salmonberry, Indian plum, red elderberry (Sambucus racemosa, FACU), and red huckleberry.
Emergent species along the OHWM of the onsite streams consisted primarily of piggyback plant,
three-leaf foamflower (Tiarella trifoliata, FAC), sword fern, and trailing blackberry.
SOILS
The Natural Resources Conservation Service (NRCS) maps the soils within the site as (NRCS
2022A; Sheet 4):
• Alderwood gravelly sandy loam, 0 to 15 percent slopes (AlC);
• Alderwood gravelly sandy loam, 15 to 20 percent slopes (AlD); and
• Swantown gravelly loam, 0 to 8 percent slopes (StB);
Alderwood gravelly sandy loam soils (AlC and AlD) are formed from glacial drift and outwash
over dense glaciomarine deposits and typically found on glacially modified hills and ridges.
Alderwood gravelly sandy loam (Ab) soils are moderately deep to densic contact and moderately
well drained with a depth to water table about 18 to 36 inches below ground surface (BGS).
Swantown gravelly loam (Stb) soils are formed from in glacial till and typically found on till plains.
These soils are moderately deep to a cemented pan and somewhat poorly drained soils with a depth
to water table about 6 to 24 inches BGS. None of the mapped soils are classified as hydric (NRCS
2022B)1.
1 Areas mapped as hydric soils do not necessarily mean that an area is or is not a wetland—hydrology, hydrophytic
vegetation, and hydric soils must all be present to classify an area as a wetland.
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 4 January 17, 2023
WETLAND SOILS
Evaluated wetland soils consisted sandy loam with very dark brown (10YR 2/2), very dark grayish
brown (10YR 3/2), and dark gray (10YR 4/1) hues. Redoximorphic features were observed as
concentrations within the matrix of Wetland A with strong brown (7.5 YR 4/6) hues. This profile
most closely matched the hydric indicator Redox Dark Surface (F6).
UPLAND SOILS
Evaluated upland soils consisted of sandy loam. The upland soils exhibited hues of black (10YR
2/1), dark grayish brown (10YR 4/2), and dark gray (2.5Y 4/1). Redoximorphic features were
observed as concentrations within the matrix with strong brown (7.5YR 4/6) hues. Upland soils
did not meet hydric soil indicators as the redoximorphic features were too low and few within the
soil profile. Soil information gathered during the site visit can be found in Appendix A.
HYDROLOGY
LANDSCAPE POSITION
The Washington State Department of Ecology’s Water Quality Atlas maps the site within the
central portion of Watershed Resource Inventory Area (WRIA) 17 – Quilcene - Snow, the
Chimacum Creek-Frontal Port Ludlow sub-watershed, and the Chimacum Creek 12-digit
Hydrologic Unit Code (HUC): 171100190802.
WETLAND HYDROLOGY
Wetland A is a depressional system with seasonal ponding and an adjacent permanently flowing
stream. The wetland contained standing water that reached up to eight inches. Portions of the
wetland were saturated to surface, but it is assumed the entire unit is seasonally ponded for more
than two consecutive months during a year. The water table within Test Plot 2 was observed at the
ground surface, thus wetland hydrology indicators High Water Table (A2) and Saturation (A3)
were met. In addition to wetland hydrology indicators in Test Plot 2, Surface Water (A1) was also
observed in Wetland A. Wetland A outlets to Stream A at the point where it discharges to the 24-
inch culvert (Figure 2; Photoplate 1). The primary sources of hydrology for Wetland A are a
seasonally high water table, precipitation, and runoff from surrounding uplands.
STREAM HYDROLOGY
Stream A is a Type Np stream and contained three to five inches of flowing water at the time of
the site visit. Stream A enters the site from the northwest corner and flows in a southeasterly
direction before discharging to a 24-ich culvert underneath West Egg & I Road. It is assumed that
Stream A flows west for approximately 568 feet before discharging to Chimacum Creek, a fish-
bearing, perennial (Type F) stream. Discussion pertaining to the offsite portion of Stream A is
discussed below in the “Critical Areas Inventory” section. Stream B is a Type Np stream and
contained two to four inches of flowing water at the time of the site visit. Stream B enters the site
from the western boundary and flows east before it discharges to Stream A (Figure 2; Photoplate
1).
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 5 January 17, 2023
OTHER WATER FEATURES
A narrow drainage swale was located in the southeast portion of the site. The drainage appeared
to original from an upland seep, flowing downslope to the northeast, and dispersing into Wetland
A. There was snow on the ground at the time of the site visit, and the drainage was distinguished
by the narrow, approximate one-and-a-half feet swale of melted snow.
CRITICAL AREA INVENTORIES2
FOREST PRACTICES APPLICATION MAPPING TOOL
The Washington Department of Natural Resources (WDNR) Forest Practices Application
Mapping Tool (FPAMT) identifies the presence two streams: a non-fish habitat (Type N, Np, or
Ns) stream spanning the northern portion of the site and a fish habitat (Type F) stream slightly
crossing through the northeast corner of the site. The two mapped streams join together just east
of the site (Figure 5; 2022). The Type F stream is shown to change to a Type N stream just west
of West Egg & I Road. ELS somewhat agrees with the FPAMT figure as the onsite stream courses
seem to be somewhat accurately depicted on the FPAMT figure; however, ELS disagrees with the
location of the FPAMT streams as their locations and the confluence of the two streams are mapped
approximately 225 east from where they were delineated onsite. The FPAMT maps two blockages
on either side of West Egg & I Road, one where the Type F stream changes to a Type N stream,
and one to the southeast. These blockages appear to represent the 24-foot culvert that is located
under West Egg & I Road (Figures 2 and 5; Photoplate 1). Because of this, ELS agrees with the
stream typing shown on the FPAMT figure and believes there is no fish habitat onsite.
NATIONAL WETLANDS INVENTORY
The National Wetlands Inventory (NWI) indicates the presence two seasonally flooded (R4SBC)
riverine systems in the same location as the FPAMT streams (Figure 6, USFW 2021b). Similarly,
with the FPMT mapping, ELS somewhat agrees with the NWI figure as the onsite stream courses
seem to be depicted somewhat accurately; however, ELS disagrees with the location of the NWI
streams as their locations and the confluence of the two streams are mapped approximately 225
east from where they were delineated onsite. Additionally, the NWI figure does not depict a
wetland where Wetland A was delineated onsite.
JEFFERSON COUNTY CRITICAL AREA INVENTORY
The Jefferson County Critical Areas (JCCA 2022) utilizes County permitted wetland boundaries
and the DNR FPAMT. Similarly, with the FPMT and NWI mapping, ELS generally agrees with
the JCCA map as the onsite stream courses seem to be depicted on the JCCA; however, ELS
disagrees with the location of the JCCA streams as their locations and the confluence of the two
streams is mapped approximately 225 east from where they were delineated onsite. ELS generally
agrees with the mapped wetland on the JCCA; however, the exact size and shape of the wetland is
slightly different than the ELS delineated Wetland A boundary.
2 The USFWS maps should generally be used with discretion because they are based on the NRCS and NWI maps,
which indicate potential conditions and must be confirmed by field observations.
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 6 January 17, 2023
CRITICAL AREAS SUMMARY
WETLANDS
Wetland A was rated according to Washington State Wetlands Rating System for Western
Washington-2014 Update (Rating System) (Hruby 2014). Wetland A is a 0.13-acre depressional,
emergent and scrub-shrub, Category III system that is situated in a depression along the west side
of West Egg & I Road within the central portion of the site. Wetland A outlets to Stream A at the
point where it discharges to the 24-inch culvert underneath the road. The wetland scored 18 points
on the rating form with 7 points for water quality, 5 points for hydrologic, and 6 points for habitat
functions. The Wetland Rating Form can be found in Appendix B.
JCC determines wetland buffers based on wetland category, proposed land use intensity, and
habitat scores on the rating form. According to JCC Table 18.22.730(1)(a), Category III wetlands
with a habitat score of six to seven, and a proposed moderate land use intensity require a 110-foot
buffer. Additionally, a 15-foot building setback is required from the edge of all critical area buffers
(JCC 18.22.630 (5)(a)(ii)).
STREAMS
Stream A is a Type Np stream with an approximately one to two feet wide channel composed of
sand and small cobble. Both sides of Stream A’s OHWM were mapped during the site visit. Stream
A flows in a southeasterly direction, eventually flowing through a 24-inch culvert located
underneath West Egg & I Road. The banks of Stream A are sloped, but undercut in areas, and
vegetated with native species that provide significant vegetative cover. Stream B is a Type Np
stream with an approximately one foot wide channel composed of silt and sand. Both sides of
Stream B’s OHWM were mapped during the site visit. Stream B enters the site from the western
boundary and flows west before it discharges to Stream A. The banks of Stream B are sloped and
vegetated with native species that provide significant vegetative cover.
JCC 18.22.630(5)(b) determines riparian area buffers based on habitat type, measured from the
edge of the OHWM. According to JCC Table 18.22.630(1), both Stream A and Stream B require
a buffer of 75 feet. Additionally, a 15-foot building and impervious surface setback is required
from the edge of stream buffers (JCC 18.22.630(5)(a)(ii)).
OTHER WATER FEATURES
A narrow drainage swale was located in the southeast portion of the site. The drainage appeared
to original from an upland seep, flowing northeast and dispersing into Wetland A. There was snow
on the ground at the time of the site visit, and the drainage was distinguished by the narrow,
approximate one-and-a-half feet swale of melted snow (Figure 2).
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 7 January 17, 2023
Table 1. Critical Areas Summary
Critical Area
HGM1/ Cowardin
Class2/Water
Type3
Area Category¹ Habitat
Score
Proposed
Land Use
Intensity
Total
Buffer
Width
(feet)4
Wetland A Emergent & Scrub-
shrub
0.13
acres
onsite
III 6 Moderate 110
Stream A Type Np NA NA NA NA 75
Stream B Type Np NA NA NA NA 75
¹Hruby 2014 2Cowardin et al. 1979
3WAC 222-16-030.
4 JCC Table 18.22.730(1)(a) & JCC Table 18.22.630(1)
LIMITATIONS
ELS bases this report’s determinations on standard scientific methodology and best professional
judgment. In our opinion, local, state, and federal regulatory agencies should agree with our
determinations. However, the information contained in this report should be considered
preliminary and used at your own risk until it has been approved in writing by the appropriate
regulatory agencies. ELS is not responsible for the impacts of any changes in environmental
standards, practices, or regulations after the date of this report.
Critical Areas Report Ecological Land Services, Inc.
Tom Gault 8 January 17, 2023
REFERENCES
Cowardin, L.M., C. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and
Deepwater Habitats of the United States. FWS/OBS-78/31. U.S. Department of the Interior,
Fish and Wildlife Service, Office of Biological Services, Washington D.C.
Hruby, T (Hruby). 2014. Washington State Wetland Rating System for Western Washington: 2014
Update. (Publication #14-06-029). Olympia, WA. Washington State Department of Ecology.
Jefferson County. 2022. Jefferson County Unified Development Code Article VI. Fish and Wildlife
Habitat Conservation Areas and Article VII. Wetlands. Jefferson County, Washington. October
3, 2022.
Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual, Technical
Report Y-87-1. U.S. Army Corps of Engineer Waterways Experiment Station, Vicksburg,
Mississippi.
Natural Resources Conservation Service (NRCS). 2023A. Soil Survey of Clark County,
Washington. https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm. Accessed January
2023.
Natural Resources Conservation Service (NRCS). 2023B. Washington State Hydric Soils List.
http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx. Accessed January 2023.
U.S. Army Corps of Engineers (Corps). 2010. Final Regional Supplement to the Corps of
Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region
(Version 2.0), ed. J.S. Wakeley, R.W. Lichvar, and C.V. Noble. ERDC/EL TR-08-13.
Vicksburg, Mississippi: U.S. Army Engineer Research and Development Center.
U.S. Army Corps of Engineers (Corps). 2012. National Wetland Plant List Indicator Rating
Definitions, ed. R.W. Lichvar, N.C. Melvin, M.L. Butterwick, and W.N. Kirchner.
ERDC/CRREL TN-12-1. Vicksburg, Mississippi: U.S. Army Engineer Research and
Development Center.
Washington Department of Ecology (Ecology). 2016. Determining the Ordinary High Water
Mark for Shoreline Management Act Compliance in Washington State. Final Review.
Publication No. 16-06-029. October.
Washington State Department of Natural Resources (WDNR). September 2022. Forest Practices
Application Mapping Tool. https://fortress.wa.gov/dnr/protectiongis/fpamt/. Accessed online
January 2023
FIGURES AND PHOTOPLATES
Drainage channel24"24"13478109B11B2B122285611121314151617181920212223242526272930313233343536B1339 - end37 - endB1B3B4B5B6B7B8B9B10B14Tp3Tp1Tp2A1A2A3A4A5A6A7A8A9A10 - meets Stream A
47.9471° Latitude
-122.8089° Longitude
1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
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:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 1VICINITY MAP1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET0200040001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comLOCATION MAP
WASHINGTON
SITE
NOTE:
Quadrangle topographic map from USGS.
PROJECT
VICINITY MAP
SCALE IN MILES
520
Mt. St.
Helens
SKAMANIA
N. Bonneville
Stevenson
Carson
14
WashougalCamas
Vancouver
Battle
Ground
Woodland
Ridgefield
CLARK
5
500
503
205
Kalama
Longview
ToutleCastle
Rock
COWLITZ
504
4Cathlamet
WAHKIAKUM
6
101
401
103
105
PACIFIC
Ilwaco
Long Beach
Ocean Park
South
Bend
Raymond
101Westport
Ocean Shores
Copalis Beach
Pacific Beach
Taholah
Quinalt
Aberdeen
MontesanoElma
Oakville
12
8
105
109
101
GRAYS
HARBOR
Queets
101
Kalaloch
Port
Townsend
Port Ludlow
Quilcene
Brinnon
101
19
104
20
JEFFERSON
CLALLAMForks110
101
113 112
101
112
Port
Angeles
Sequim
Neah Bay
Clallam Bay
Friday Harbor
Blaine
Ferndale
Bellingham
542
542
9
Lynden5
539
SAN
JUAN
WHATCOM
ConcreteAnacortes
Mount Vernon
Sedro-Woolley
5
20
11
530
SKAGIT
Lynnwood
MulkiteoEverett
Marysville
Monroe
Arlington
Darrington
5
9
2522
SNOHOMISH
Mt St Helens
KING
Seattle
Shoreline
90
Carnation
North Bend
Redmond
Enumclaw
Auburn
Issaquah
Burien
Kent
Renton
405
18
169
410
169
202
Mt. Rainier
Eatonville
4
Puyallup
Tacoma
Gig Harbor
165
162
164
161
7
702
507
Roy
DuPont Carbonado
5
5 Olympia
Shelton
Yelm
Tenino
508
Centralia
Chehalis
Pe Ell Morton 12
Toledo
7
505
Winlock
PIERCE
LEWIS
THURSTON
5
5
KITSAP
Poulsbo
3
16
Bremerton
SITE
SITE
225'
200'
Existing
Structure
Existing
Driveway
West Egg & I Road
TP-2
TP-1
TP-3
Wetland A
Category III
Depressional
Emergent
Scrub-shrub
Seasonally ponded
Permanently
flowing stream
0.13 ac.
75'75'Stream A
Type Np
Stream B
Type Np 110'Narrow
Drainage
Swale
1
2
NOTE(S):
1.Aerial from Google Earth™ (2022).
2.Wetland, OHWM, test plots and culvert located using handheld GPS capable of submeter accuracy.1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
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:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 2EXISTING CONDITIONS1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET01002001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comLEGEND:
Site Boundary
Parcel Boundary
Wetland Boundary
Approx. Wetland Boundary
Wetland Buffer
Stream with Flow Direction
Stream Buffer
OHWM
5' Building Setback
5' Contours
24" Culvert
Test Plot Location
Photostation Location
TP-1
#801044007
#801044010
#801044011
#801041023
#801044003
1
225'
200'
Existing
Structure
Existing
Driveway
West Egg & I Road
Wetland A
Category III
Depressional
Emergent
Scrub-shrub
Seasonally ponded
Permanently
flowing stream
0.13 ac.
75'75'Stream A
Type Np
Stream B
Type Np
Proposed
Septic
110'Narrow
Drainage
Swale
NOTE(S):
1.Wetland, OHWM, and culvert located using handheld GPS capable of submeter accuracy.1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 3PROPOSED CONDITIONS1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET01002001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comLEGEND:
Site Boundary
Parcel Boundary
Wetland Boundary
Approx. Wetland Boundary
Wetland Buffer
Stream with Flow Direction
Stream Buffer
OHWM
5' Building Setback
5' Contours
24" Culvert
#801044007
#801044010
#801044011
#801041023
#801044003
NOTE(S):
1.Map provided on-line by NRCS at web address:
http://websoilsurvey.nrcs.usda.gov/app/1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 4NRCS SOIL SURVEY1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET02004001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comLEGEND:
Site Boundary
NRCS Soil Boundary
AlC Alderwood gravelly sandy loam, 0 to 15 percent slopes. Not hydric.
AlD Alderwood gravelly sandy loam, 15 to 30 percent slopes. Not hydric.
StB Swantown gravelly loam, 0 to 8 percent slopes. Not hydric.
StB
SITE
AlC
AlD
NOTE: Map provided on-line by Washington State
Department of Natural Resources at web address:
http://fortress.wa.gov/dnr/app1/Fpars/viewer.htm
1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 5WDNR STREAM TYPE MAP1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET050010001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comSITE
LEGEND:
Site Boundary
40-foot Contours
40 ft. Contours
Water Bodies (FP)
Wet Area
Water Courses (FP)
Type F
Type N, Np, Ns
DNR Roads
Paved Road
Unpaved Road/Surface Unknown
Unpaved Road/Surface Unknown
Water Type Breaks (FP)
Public Land Survey Sections
Public Land Survey Sections
Public Land Survey Townships
Public Land Survey Townships
NOTE(S):
1.Map provided on-line by US Fish & Wildlife Service at web address:
https://www.fws.gov/program/national-wetlands-inventory/wetlands-mapper1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 6USFWS NATIONAL WETLANDS INVENTORY1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET02004001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comR4SBC Riverine, intermittent, streambed, seasonally flooded.
Riverine
LEGEND:
Site Boundary
Wetlands
SITE
R4SBC
1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 7JEFFERSON COUNTY CRITICAL AREAS1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET02004001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comNOTE(S):
1.Map provided on-line by Jefferson County at web address: https://gisweb.jeffcowa.us/LandRecords/
LEGEND:
SITE
Site Boundary
Critical Areas
DNR Streams & Water Bodies Forest Practices
DNR Water Body Forest Practices
Fish Habitat
Non-fish Habitat
DNR Streams Forest Practices
Fish Habitat
Non-fish Habitat
Wetlands
Wetlands
1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 8WETLAND RATING FORM-150' OFFSET1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET0801601157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comCowardin Classes:
EM Emergent - 64.8%
SS Scrub/shrub - 35.2%
Hydroperiods:
SF Seasonally flooded or inundated
SFS Seasonally flowing stream in, or adjacent to, the wetland
Rating
Question
Description Answer - Wetland A
D 1.1, D 4.1 Location of Outlet Wetland has a unconstricted surface outlet that is permanently flowing
D 1.3 Distribution of persistent plants Wetland has persistent plants >1/2 the area
D. 1.4 Area of seasonally flooded Area seasonally ponded > 1/2 of the wetland
D 2.2 Boundary of area w/in 150’ of
the wetland in land uses that
generate pollutants
<10% of the area within 150’ in land uses that generate pollutants
D 5.2 Boundary of area w/in 150’ of
the wetland in land uses that
generate excess runoff
<10% of the area within 150’ in land use that generate excess runoff
D 4.3 Contributing
Basin-Contribution of wetland
to storage in the watershed
Area of the basin is more than 100 times the area of the wetland
D 5.3 Contributing Basin covered in
intensive land uses
<25% of the area of the basin covered with intensive land uses
H 1.1 Cowardin Plant Classes Emergent and scrub-shrub
H 1.2 Hydroperiods Seasonally ponded, permanently flowing stream
H 1.4 Interspersion of habitats Low interspersion of habitats
LEGEND:
Site Boundary
Wetland Unit Boundary
Vegetation Class Division
Hydroperiod Division
150' Wetland Offset
Impervious Surfaces - 6.6%
SS
SITE
EM
West Egg & I Road
1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
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:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 9WETLAND RATING FORM-1 km OFFSET1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET0110022001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comH2.1 Accessible Habitat
A-U (42.1%)
A-M/L (30.3%)A-M/L
A-U
H2.2 Undisturbed Habitat
U (8.0%)
M/L (17.0%)
H2.3 Land Use Intensity
H (2.8%)
M/L
U
H
A-M/L
A-U
M/L
U
H
Contributing Basin
>100x area of Wetland A
H 2.1. Accessible Habitat Equation
% A-U habitat 42.1% + [(% A-M/L intensity land uses)/2] 15.2%= 57.3%
H 2.2. Total Undisturbed Habitat Equation
% A-U + % U habitat 50.1% + [(% A-M/L + % M/L land uses)/2] 23.7%= 73.8%
SITE
Wetland A
LEGEND:
Site Boundary
Wetland Unit Boundary
U A-U
A-U
A-U
A-UA-U
A-UA-U
A-U
U
A-U
A-M/L
A-M/L
A-M/L
A-M/L
M/L
M/L
M/L
A-M/L
A-M/L
H
H
H
1/19/2023 3:35 PM C:\Users\Chloe\Box\ELS\WA\Jefferson\County\3855-Gault\3855.01-1000 W Egg & I Rd\3855.01-Figures CAD Only\3855.01_CAR.dwg Chloe N
6
:(DATE:DWN:REQ. BY:PRJ. MGR:CHK:PROJECT NO:Figure 10WETLAND RATING FORM-303(d) and TMDLs1/19/233855.01West Egg & I Road CARTom GaultSection 4, Township 28N, Range 1W, W.M.Chimacum Jefferson County, WashingtonCBMMMMSCALE IN FEET0240048001157 3rd Ave., Suite 220ALongview, WA 98632Phone: (360) 578-1371Fax: (360) 414-9305www.eco-land.comWQ Improvement Projects
Approved
In Development
NOTE(S):
1.Map provided on-line by Washington State
Department of Ecology at web address:
https://fortress.wa.gov/ecy/waterqualityatlas/map.aspx?
Assessed Waters/Sediment
Water
Category 5 - 303d
Category 4C
Category 4B
Category 4A
Category 2
Category 1
Sediment
Category 5 - 303d
Category 4C
Category 4B
Category 4A
Category 2
Category 1
Subbasins
12 Digit HUC Boundary
SITE
SITE
1157 3rd Ave., Suite 220A
Longview, WA 98632
Phone: (360) 578-1371
Fax: (360) 414-9305
DATE: 1.17.23
DWN: MAM
PRJ. MGR: MAM
PROJ.#: 3855.01
Photoplate 1
Site Photos
West Egg & I Road CAR
Jefferson County, Washington
Section 4, Township 28 North, Range 1 West, W.M.
Photo 1. Facing south from Photo Point 1 showing Wetland A where it abuts
West Egg & I Road. December 2022.
Photo 3. Facing west from Photo Point 2 showing Stream A and Stream B, just
upstream of their confluence. December 2022.
Photo 2. Facing east from Photo Point 1 showing 1) where Wetland A outlets to
Stream A and 2) where Stream A discharges to the 24-inch culvert. December 2022.
Photo 4. Facing east from Photo Point 2 showing Stream A, just downstream of
the confluence between Stream A and Stream B. December 2022.
APPENDIX A
ROUTINE ONSITE WETLAND DETERMINATION DATA FORMS
Applicant/Owner:State:
Investigator(s):
Landform (hillside, terrace, etc.):0-15
Subregion (LRR):Lat:
Soil Map Unit Name:
X
Are Vegetation , Soil , or Hydrology Are “Normal Circumstances” present?Yes X No
Are Vegetation , Soil , or Hydrology
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Yes X No
Yes No X Yes X
Yes No X
)
1.
2.(A)
3.
4.(B)
Sapling/Shrub Stratum (A/B)
1.
2.
3.
4.x 1 =
5.x 2 =
x 3 =
x 4 =
1.x 5 =
2.Column Totals:(A)(B)
3.
4.
5.
6.
7.X
8.
9.
10.
11.
Woody Vine Stratum
1.
2.
Yes X
Tree Stratum
Is the Sampled Area
within a Wetland?No
70
15'
Remarks:
Indicator
Status
3
3
VEGETATION – Use scientific names of plants.
(If no, explain in Remarks.)
Hydric Soil Present?
Wetland Hydrology Present?
30'
naturally problematic?(If needed, explain any answers in Remarks.)
(Plot size:
Yes
Number of Dominant Species That
Are OBL, FACW, or FAC:
(Plot size:
Remarks:
FACU species
FAC species
OBL species
2 - Dominance Test is >50%
Problematic Hydrophytic Vegetation1 (Explain)
30
5 - Wetland Non-Vacular Plants1
4 - Morphological Adaptations1(Provide supporting
=Total Cover
)
Hydrophytic
Vegetation
Present?No
data in Remarks or on a separate sheet)
(Plot size:
Polystichum munitum
40
FAC
Herb Stratum
10 No
Tolmiea menziesii
Total % Cover of:
=Total Cover
1 - Rapid Test for Hydrophytic Vegetation
Multiply by:
Prevalence Index = B/A =
Yes
3 - Prevalence Index is ≤3.01
Hydrophytic Vegetation Indicators:
Datum:-122.808613139371
Alderwood gravelly sandy loam, 0 to 15 percent slopes none
Long:
UPL species
FACW species
100.0%
)
20')
60
Rubus spectabilis
Prevalence Index worksheet:
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
S4, T28N, R1W
WA TP1
None
Section, Township, Range:
Sampling Date:
Sampling Point:
Slope (%):Local relief (concave, convex, none):
12/05/22
Tom Gault
Mill, Megan
Terraces
Jefferson CountyCity/County:
NoAre climatic / hydrologic conditions on the site typical for this time of year?
Project/Site:W Egg & I Road
LRR A
NWI classification:
Dominant
Species?
10
10 FAC
47.9470928250457 NAD83
FAC
Hydrophytic Vegetation Present?
significantly disturbed?
(Plot size:
Alnus rubra Yes
=Total Cover
40
FACU
Yes
10'
Bare ground was covered in leaf litter. The hydrophytic vegetation criterion is met due to greater than 50% of the dominant vegetation within the test plot having FAC indicator statuses.
Percent of Dominant Species That
Are OBL, FACW, or FAC:
Total Number of Dominant Species
Across All Strata:
Dominance Test worksheet:
% Bare Ground in Herb Stratum
Absolute
% Cover
=Total Cover
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
%%Type1 Loc2
98 2 C M
Type:
Depth (inches):Hydric Soil Present?Yes No X
Primary Indicators (minimum of one is required; check all that apply)
Surface Water Present?Yes X
Water Table Present?Yes X
Saturation Present?Yes X Wetland Hydrology Present?Yes No X
TP1SOIL
sa lo texture throughout
Prominent redox concentrations
sa - sandy
lo - loam
Remarks
Loamy/Clayey
Drainage Patterns (B10)
Dry-Season Water Table (C2)
Saturation Visible on Aerial Imagery (C9)
Aquatic Invertebrates (B13)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres on Living Roots (C3)
Water-Stained Leaves (B9) (except
Presence of Reduced Iron (C4)
Remarks:
HYDROLOGY
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
No hydric soil indicators were observed.
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
13-16
Sparsely Vegetated Concave Surface (B8)
Geomorphic Position (D2)
Raised Ant Mounds (D6) (LRR A)Surface Soil Cracks (B6)
Sediment Deposits (B2)
Drift Deposits (B3)
Water Marks (B1)
Algal Mat or Crust (B4)
Wetland Hydrology Indicators:
Salt Crust (B11)
Water-Stained Leaves (B9) (MLRA 1, 2
Frost-Heave Hummocks (D7)Other (Explain in Remarks)
FAC-Neutral Test (D5)Recent Iron Reduction in Tilled Soils (C6)
Stunted or Stressed Plants (D1) (LRR A)
Inundation Visible on Aerial Imagery (B7)
Iron Deposits (B5)
Saturation (A3)
Secondary Indicators (2 or more required)
Shallow Aquitard (D3)
Color (moist)
7.5YR 4/6
0-13
Surface Water (A1)
Loamy/Clayey
Matrix
Texture
Redox FeaturesDepth
(inches)Color (moist)
10YR 4/2
10YR 2/1
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.Sandy Gleyed Matrix (S4)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Field Observations:
(includes capillary fringe)
Hydrology was not present and there was no evidence of wetland hydrology.
No
No
No
Depth (inches):
Depth (inches):
Depth (inches):
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
2Location: PL=Pore Lining, M=Matrix.
Restrictive Layer (if observed):
2 cm Muck (A10)
Red Parent Material (F21)
Very Shallow Dark Surface (F22)
Other (Explain in Remarks)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
2.5 cm Mucky Peat or Peat (S2) (LRR G)
Sandy Redox (S5)
Stripped Matrix (S6)
Loamy Mucky Mineral (F1) (except MLRA 1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
Applicant/Owner:State:
Investigator(s):
Landform (hillside, terrace, etc.):15-30
Subregion (LRR):Lat:
Soil Map Unit Name:
X
Are Vegetation , Soil , or Hydrology Are “Normal Circumstances” present?Yes X No
Are Vegetation , Soil , or Hydrology
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Yes X No
Yes X No Yes X
Yes X No
)
1.
2.(A)
3.
4.(B)
Sapling/Shrub Stratum (A/B)
1.
2.
3.
4.x 1 =
5.x 2 =
x 3 =
x 4 =
1.x 5 =
2.Column Totals:(A)(B)
3.
4.
5.
6.
7.X
8.
9.
10.
11.
Woody Vine Stratum
1.
2.
Yes X
The hydrophytic vegetation criterion is met due to greater than 50% of the dominant vegetation within the test plot having FAC indicator statuses.
Percent of Dominant Species That
Are OBL, FACW, or FAC:
Total Number of Dominant Species
Across All Strata:
Dominance Test worksheet:
% Bare Ground in Herb Stratum
Absolute
% Cover
=Total Cover
Urtica dioica
Equisetum arvense
Oenanthe sarmentosa
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
(Plot size:
=Total Cover
Rubus armeniacus
10
No
FAC
15
Yes
FACW
Yes
5
10'
NoAre climatic / hydrologic conditions on the site typical for this time of year?
Project/Site:W Egg & I Road
LRR A
NWI classification:
Dominant
Species?
47.9470704757222 NAD83
FAC
Hydrophytic Vegetation Present?
significantly disturbed?
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
S4, T28N, R1W
WA TP2
Concave
Section, Township, Range:
Sampling Date:
Sampling Point:
Slope (%):Local relief (concave, convex, none):
12/05/22
Tom Gault
Mill, Megan
Ridges, hills
Jefferson CountyCity/County:
Datum:-122.808369401958
Alderwood gravelly sandy loam, 15 to 30 percent slopes none
Long:
UPL species
FACW species
100.0%
)
20')
55
Rubus spectabilis
Prevalence Index worksheet:
Total % Cover of:
=Total Cover
1 - Rapid Test for Hydrophytic Vegetation
Multiply by:
Prevalence Index = B/A =
Yes
3 - Prevalence Index is ≤3.01
FAC Hydrophytic Vegetation Indicators:
Phalaris arundinacea
20
No
OBL
FAC
Herb Stratum
15 No
Trifolium repens
15
Problematic Hydrophytic Vegetation1 (Explain)
0
5 - Wetland Non-Vacular Plants1
4 - Morphological Adaptations1(Provide supporting
=Total Cover
)
Hydrophytic
Vegetation
Present?No
data in Remarks or on a separate sheet)
(Plot size:
(Plot size:
Remarks:
FACU species
FAC species
OBL species
FAC
2 - Dominance Test is >50%
Indicator
Status
3
3
VEGETATION – Use scientific names of plants.
(If no, explain in Remarks.)
Hydric Soil Present?
Wetland Hydrology Present?
30'
naturally problematic?(If needed, explain any answers in Remarks.)
(Plot size:
Yes
Number of Dominant Species That
Are OBL, FACW, or FAC:
Tree Stratum
Is the Sampled Area
within a Wetland?No
100
5 No
15'
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
%%Type1 Loc2
100
95 5 C M
100
X
Type:
Depth (inches):Hydric Soil Present?Yes X No
Primary Indicators (minimum of one is required; check all that apply)
X
X
X
Surface Water Present?Yes X
Water Table Present?Yes X
Saturation Present?Yes X Wetland Hydrology Present?Yes X No
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
2Location: PL=Pore Lining, M=Matrix.
Restrictive Layer (if observed):
2 cm Muck (A10)
Red Parent Material (F21)
Very Shallow Dark Surface (F22)
Other (Explain in Remarks)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
2.5 cm Mucky Peat or Peat (S2) (LRR G)
Sandy Redox (S5)
Stripped Matrix (S6)
Loamy Mucky Mineral (F1) (except MLRA 1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
0
0
Field Observations:
(includes capillary fringe)
Wetland hydrology indicators High Water Table (A2) and Saturation (A3) were met.
No
No
No
Depth (inches):
Depth (inches):
Depth (inches):
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.Sandy Gleyed Matrix (S4)
Surface Water (A1)
Loamy/Clayey
10YR 4/1
Matrix
Texture
10-16 Loamy/Clayey
Redox FeaturesDepth
(inches)Color (moist)
10YR 3/2
10YR 2/2
Color (moist)
7.5YR 4/6
0-4
Sparsely Vegetated Concave Surface (B8)
Geomorphic Position (D2)
Raised Ant Mounds (D6) (LRR A)Surface Soil Cracks (B6)
Sediment Deposits (B2)
Drift Deposits (B3)
Water Marks (B1)
Algal Mat or Crust (B4)
Wetland Hydrology Indicators:
Salt Crust (B11)
Water-Stained Leaves (B9) (MLRA 1, 2
Frost-Heave Hummocks (D7)Other (Explain in Remarks)
FAC-Neutral Test (D5)Recent Iron Reduction in Tilled Soils (C6)
Stunted or Stressed Plants (D1) (LRR A)
Inundation Visible on Aerial Imagery (B7)
Iron Deposits (B5)
Saturation (A3)
Secondary Indicators (2 or more required)
Shallow Aquitard (D3)
Drainage Patterns (B10)
Dry-Season Water Table (C2)
Saturation Visible on Aerial Imagery (C9)
Aquatic Invertebrates (B13)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres on Living Roots (C3)
Water-Stained Leaves (B9) (except
Presence of Reduced Iron (C4)
Remarks:
HYDROLOGY
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
The hydric soil indicator Redox Dark Surface (F6) was met within the soil profile.
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
4-10
TP2SOIL
sa lo texture throughout
Prominent redox concentrations
sa - sandy
lo - loam
Remarks
Loamy/Clayey
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
Applicant/Owner:State:
Investigator(s):
Landform (hillside, terrace, etc.):0-15
Subregion (LRR):Lat:
Soil Map Unit Name:
X
Are Vegetation , Soil , or Hydrology Are “Normal Circumstances” present?Yes X No
Are Vegetation , Soil , or Hydrology
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Yes X No
Yes No X Yes X
Yes No X
)
1.
2.(A)
3.
4.(B)
Sapling/Shrub Stratum (A/B)
1.
2.
3.
4.x 1 =
5.x 2 =
x 3 =
x 4 =
1.x 5 =
2.Column Totals:(A)(B)
3.
4.
5.
6.
7.X
8.
9.
10.
11.
Woody Vine Stratum
1.
2.
Yes X
The hydrophytic vegetation criterion is met due to greater than 50% of the dominant vegetation within the test plot having FAC indicator statuses.
Percent of Dominant Species That
Are OBL, FACW, or FAC:
Total Number of Dominant Species
Across All Strata:
Dominance Test worksheet:
% Bare Ground in Herb Stratum
Absolute
% Cover
=Total Cover
Athyrium cyclosorum
Equisetum arvense
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
(Plot size:
=Total Cover
5
No
5
FAC
Yes
10'
NoAre climatic / hydrologic conditions on the site typical for this time of year?
Project/Site:W Egg & I Road
LRR A
NWI classification:
Dominant
Species?
47.9474497 NAD83
FAC
Hydrophytic Vegetation Present?
significantly disturbed?
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
S4, T28N, R1W
WA TP3
None
Section, Township, Range:
Sampling Date:
Sampling Point:
Slope (%):Local relief (concave, convex, none):
12/05/22
Tom Gault
Mill, Megan
Ridges, hills
Jefferson CountyCity/County:
Datum:-122.809338
Alderwood gravelly sandy loam, 0 to 15 percent slopes none
Long:
UPL species
FACW species
100.0%
)
20')
75
Rubus spectabilis
Prevalence Index worksheet:
Total % Cover of:
=Total Cover
1 - Rapid Test for Hydrophytic Vegetation
Multiply by:
Prevalence Index = B/A =
Yes
3 - Prevalence Index is ≤3.01
Hydrophytic Vegetation Indicators:
Urtica dioica
5
No
FAC
FAC
Herb Stratum
10 No
Tolmiea menziesii
5
Problematic Hydrophytic Vegetation1 (Explain)
0
5 - Wetland Non-Vacular Plants1
4 - Morphological Adaptations1(Provide supporting
=Total Cover
)
Hydrophytic
Vegetation
Present?No
data in Remarks or on a separate sheet)
(Plot size:
(Plot size:
Remarks:
FACU species
FAC species
OBL species
FAC
2 - Dominance Test is >50%
Indicator
Status
2
2
VEGETATION – Use scientific names of plants.
(If no, explain in Remarks.)
Hydric Soil Present?
Wetland Hydrology Present?
30'
naturally problematic?(If needed, explain any answers in Remarks.)
(Plot size:
Yes
Number of Dominant Species That
Are OBL, FACW, or FAC:
Tree Stratum
Is the Sampled Area
within a Wetland?No
95
15'
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
%%Type1 Loc2
100
100
100
Type:
Depth (inches):Hydric Soil Present?Yes No X
Primary Indicators (minimum of one is required; check all that apply)
Surface Water Present?Yes X
Water Table Present?Yes X
Saturation Present?Yes X Wetland Hydrology Present?Yes No X
High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B)
2Location: PL=Pore Lining, M=Matrix.
Restrictive Layer (if observed):
2 cm Muck (A10)
Red Parent Material (F21)
Very Shallow Dark Surface (F22)
Other (Explain in Remarks)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
2.5 cm Mucky Peat or Peat (S2) (LRR G)
Sandy Redox (S5)
Stripped Matrix (S6)
Loamy Mucky Mineral (F1) (except MLRA 1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Field Observations:
(includes capillary fringe)
The soil in TP3 was moist, but not saturated. There was no evidence of wetland hydrology.
No
No
No
Depth (inches):
Depth (inches):
Depth (inches):
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.Sandy Gleyed Matrix (S4)
Surface Water (A1)
Loamy/Clayey
10YR 2/1
Matrix
Texture
4-16 Loamy/Clayey
Redox FeaturesDepth
(inches)Color (moist)
2.5Y 4/1
10YR 2/1
Color (moist)
0-3
Sparsely Vegetated Concave Surface (B8)
Geomorphic Position (D2)
Raised Ant Mounds (D6) (LRR A)Surface Soil Cracks (B6)
Sediment Deposits (B2)
Drift Deposits (B3)
Water Marks (B1)
Algal Mat or Crust (B4)
Wetland Hydrology Indicators:
Salt Crust (B11)
Water-Stained Leaves (B9) (MLRA 1, 2
Frost-Heave Hummocks (D7)Other (Explain in Remarks)
FAC-Neutral Test (D5)Recent Iron Reduction in Tilled Soils (C6)
Stunted or Stressed Plants (D1) (LRR A)
Inundation Visible on Aerial Imagery (B7)
Iron Deposits (B5)
Saturation (A3)
Secondary Indicators (2 or more required)
Shallow Aquitard (D3)
Drainage Patterns (B10)
Dry-Season Water Table (C2)
Saturation Visible on Aerial Imagery (C9)
Aquatic Invertebrates (B13)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres on Living Roots (C3)
Water-Stained Leaves (B9) (except
Presence of Reduced Iron (C4)
Remarks:
HYDROLOGY
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
The observed soil was moist, but not saturated. No hydric soil indicators were observed.
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
3-4
TP3SOIL
sa lo texture throughout
sa - sandy
lo - loam
Remarks
Loamy/Clayey
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
APPENDIX B
WETLAND RATING FORMS
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1
RATING SUMMARY – Western Washington
Name of wetland (or ID #): Wetland A Date of site visit: 12/5/22
Rated by M. Mill_________ Trained by Ecology? _Yes _ Date of training _03/21__ ___
HGM Class used for rating Depressional____ Wetland has multiple HGM classes? __Y X_N
NOTE: Form is not complete without the figures requested (figures can be combined).
Source of base aerial photo/map Google Earth
OVERALL WETLAND CATEGORY III (based on functions X or special characteristics _)
1. Category of wetland based on FUNCTIONS
Category I – Total score = 23 – 27
Category II – Total score = 20 – 22
X Category III – Total score = 16 – 19
Category IV – Total score = 9 – 15
FUNCTION Improving
Water Quality
Hydrologic Habitat
Circle the appropriate ratings
Site Potential H M L H M L H M L
Landscape Potential H M L H M L H M L
Value H M L H M L H M L TOTAL
Score Based on
Ratings 7 5 6 18
2. Category based on SPECIAL CHARACTERISTICS of wetland
Score for each function based on three ratings (order of ratings is not important)
9 = H,H,H
8 = H,H,M
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
CHARACTERISTIC CATEGORY
Estuarine I II
Wetland of High Conservation Value I
Bog I
Mature Forest I
Old Growth Forest I
Coastal Lagoon I II
Interdunal I II III IV
None of the above X
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2
Maps and figures required to answer questions correctly for
Western Washington
Depressional Wetlands
Map of: To answer questions: Figure #
Cowardin plant classes D 1.3, H 1.1, H 1.4 8
Hydroperiods D 1.4, H 1.2 8
Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 8
Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 8
Map of the contributing basin D 4.3, D 5.3 9
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2.1, H 2.2, H 2.3 9
Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 10
Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 10
Riverine Wetlands
Map of: To answer questions: Figure #
Cowardin plant classes H 1.1, H 1.4
Hydroperiods H 1.2
Ponded depressions R 1.1
Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4
Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2
Width of unit vs. width of stream (can be added to another figure) R 4.1
Map of the contributing basin R 2.2, R 2.3, R 5.2
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2.1, H 2.2, H 2.3
Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1
Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3
Lake Fringe Wetlands
Map of: To answer questions: Figure #
Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4
Plant cover of trees, shrubs, and herbaceous plants L 1.2
Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2.1, H 2.2, H 2.3
Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2
Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3
Slope Wetlands
Map of: To answer questions: Figure #
Cowardin plant classes H 1.1, H 1.4
Hydroperiods H 1.2
Plant cover of dense trees, shrubs, and herbaceous plants S 1.3
Plant cover of dense, rigid trees, shrubs, and herbaceous plants
(can be added to figure above)
S 4.1
Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2.1, H 2.2, H 2.3
Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2
Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3
HGM Classification of Wetlands in Western Washington
For questions 1-7, the criteria described must apply to the entire unit being rated.
If the 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.
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
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.
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.
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?
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;
At least 30% of the open water area is deeper than 6.6 ft (2 m).
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 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, The water leaves the wetland without being impounded.
NO – go to 5 YES – The wetland class is Slope
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).
5. Does the entire wetland unit meet all of the following criteria?
The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that
stream or river, The overbank flooding occurs at least once every 2 years.
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4
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
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.
NO – go to 7 YES – The wetland class is 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.
NO – go to 8 YES – The wetland class is Depressional
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.
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 rated
HGM class to
use in rating
Slope + Riverine Riverine
Slope + Depressional Depressional
Slope + Lake Fringe Lake Fringe
Depressional + Riverine along stream
within boundary of depression
Depressional
Depressional + Lake Fringe Depressional
Riverine + Lake Fringe Riverine
Salt Water Tidal Fringe and any other
class of freshwater wetland
Treat as
ESTUARINE
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.
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 5
DEPRESSIONAL AND FLATS WETLANDS
Water Quality Functions - Indicators that the site functions to improve water quality
D 1.0. Does the site have the potential to improve water quality?
D 1.1. Characteristics of surface water outflows from the wetland:
Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet).
points = 3
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet.
points = 2
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1
Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1
1
D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions).Yes = 4 No = 0 0
D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes):
Wetland has persistent, ungrazed, plants > 95% of area points = 5
Wetland has persistent, ungrazed, plants > ½ of area points = 3
Wetland has persistent, ungrazed plants > 1/ of area points = 1 10
Wetland has persistent, ungrazed plants <1/ of area points = 0 10
3
D 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 = 4
Area seasonally ponded is > ¼ total area of wetland points = 2
Area seasonally ponded is < ¼ total area of wetland points = 0
4
Total for D 1 Add the points in the boxes above 8
Rating of Site Potential If score is: 12-16 = H X 6-11 = M 0-5 = L Record the rating on the first page
D 2.0. Does the landscape have the potential to support the water quality function of the site?
D 2.1. Does the wetland unit receive stormwater discharges? Yes = 1 No = 0 0
D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 0
D 2.3. Are there septic systems within 250 ft of the wetland? Yes = 1 No = 0 1
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?
Source Yes = 1 No = 0 0
Total for D 2 Add the points in the boxes above 1
Rating of Landscape Potential If score is: 3 or 4 = H X 1 or 2 = M 0 = L Record the rating on the first page
D 3.0. Is the water quality improvement provided by the site valuable to society?
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? Yes = 1 No = 0 1
D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0 1
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)? Yes = 2 No = 0 0
Total for D 3 Add the points in the boxes above 2
Rating of Value If score is: X 2-4 = H 1 = M 0 = L Record the rating on the first page
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 6
DEPRESSIONAL AND FLATS WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation
D 4.0. Does the site have the potential to reduce flooding and erosion?
D 4.1. Characteristics of surface water outflows from the wetland:
Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet points = 2
Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0
0
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.
Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7
Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5
Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3
The wetland is a “headwater” wetland points = 3
Wetland is flat but has small depressions on the surface that trap water points = 1
Marks of ponding less than 0.5 ft (6 in) points = 0
3
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.
The area of the basin is less than 10 times the area of the unit points = 5
The area of the basin is 10 to 100 times the area of the unit points = 3
The area of the basin is more than 100 times the area of the unit points = 0
Entire wetland is in the Flats class points = 5
0
Total for D 4 Add the points in the boxes above 3
Rating of Site Potential If score is: 12-16 = H 6-11 = M X 0-5 = L Record the rating on the first page
D 5.0. Does the landscape have the potential to support hydrologic functions of the site?
D 5.1. Does the wetland receive stormwater discharges? Yes = 1 No = 0 0
D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 No = 0 0
D 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.)? Yes = 1 No = 0 0
Total for D 5 Add the points in the boxes above 0
Rating of Landscape Potential If score is: 3 = H 1 or 2 = M X 0 = L Record the rating on the first page
D 6.0. Are the hydrologic functions provided by the site valuable to society?
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.
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. points = 2
• Surface flooding problems are in a sub-basin farther down-gradient. points = 1
Flooding from groundwater is an issue in the sub-basin. points = 1
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 points = 0
There are no problems with flooding downstream of the wetland. points = 0
2
D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan?
Yes = 2 No = 0 0
Total for D 6 Add the points in the boxes above 2
Rating of Value If score is: X 2-4 = H 1 = M 0 = L Record the rating on the first page
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 7
These questions apply to wetlands of all HGM classes.
HABITAT FUNCTIONS - Indicators that site functions to provide important habitat
H 1.0. Does the site have the potential to provide habitat?
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.
Aquatic bed 4 structures or more: points = 4
X Emergent 3 structures: points = 2
X Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points = 1
Forested (areas where trees have > 30% cover) 1 structure: points = 0
If the unit has a Forested class, check if:
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 1.2. Hydroperiods
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).
Permanently flooded or inundated 4 or more types present: points = 3
X Seasonally flooded or inundated 3 types present: points = 2
Occasionally flooded or inundated 2 types present: points = 1
Saturated only 1 type present: points = 0
X Permanently flowing stream or river in, or adjacent to, the wetland
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 points
1
H 1.3. Richness of plant species
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
If you counted: > 19 species points = 2
5 - 19 species points = 1
< 5 species points = 0
1
H 1.4. Interspersion of habitats
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.
None = 0 points Low = 1 point Moderate = 2 points
All three diagrams
in this row
are HIGH = 3points
1
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 8
H 1.5. Special habitat features:
Check the habitat features that are present in the wetland. The number of checks is the number of points.
Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long).
Standing snags (dbh > 4 in) within the wetland
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)
X Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of
strata)
1
Total for H 1 Add the points in the boxes above 5
Rating of Site Potential If score is: 15-18 = H 7-14 = M X 0-6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat functions of the site?
H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit).
Calculate: % undisturbed habitat_42.1_ + [(% moderate and low intensity land uses)/2]_15.2_ = _57.3_%
If total accessible habitat is:
> 1/ (33.3%) of 1 km Polygon points = 3 3
20-33% of 1 km Polygon points = 2
10-19% of 1 km Polygon points = 1
< 10% of 1 km Polygon points = 0
3
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate: % undisturbed habitat 50.1_ + [(% moderate and low intensity land uses)/2]_23.7_ = 73.8 %
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10-50% and in 1-3 patches points = 2
Undisturbed habitat 10-50% and > 3 patches points = 1
Undisturbed habitat < 10% of 1 km Polygon points = 0
3
H 2.3. Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use points = (- 2)
≤ 50% of 1 km Polygon is high intensity points = 0
0
Total for H 2 Add the points in the boxes above 6
Rating of Landscape Potential If score is: X 4-6 = H 1-3 = M < 1 = L Record the rating on the first page
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.
Site meets ANY of the following criteria: points = 2
⎯ It has 3 or more priority habitats within 100 m (see next page)
⎯ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ⎯ It is mapped as a location for an individual WDFW priority species 1 ⎯ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ⎯ 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
Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1
Site does not meet any of the criteria above points = 0
Rating of Value If score is: 2 = H X 1 = M 0 = L Record the rating on the first page
H 3.0. Is the habitat provided by the site valuable to society?
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 9
WDFW Priority Habitats
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. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here:
http://wdfw.wa.gov/conservation/phs/list/) 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.
Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). 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).
Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock.
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.
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). X 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).
X 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).
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.
Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. 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.
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.
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed
elsewhere.
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 10
Wetland Type
Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met.
Category
SC 1.0. Estuarine wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
⎯ The dominant water regime is tidal,
⎯ Vegetated, and
⎯ With a salinity greater than 0.5 ppt Yes –Go to SC 1.1 No= Not an estuarine wetland
SC 1.1. 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?
Yes = Category I No - Go to SC 1.2
SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
⎯ 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. Yes = Category I No = Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)
SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High
Conservation Value? Yes – Go to SC 2.2 No – Go to SC 2.3
SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value?
Yes = Category I No = Not a WHCV
SC 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.pdf
Yes – Contact WNHP/WDNR and go to SC 2.4 No = Not a WHCV
SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on
their website? Yes = Category I No = Not a WHCV
SC 3.0. Bogs
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.
SC 3.1. 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? Yes – Go to SC 3.3 No – Go to SC 3.2
SC 3.2. 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? Yes – Go to SC 3.3 No = Is not a bog
SC 3.3. 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? Yes = Is a Category I bog No – Go to SC 3.4
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.
SC 3.4. 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?
Yes = Is a Category I bog No = Is not a bog
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Wetland name or number A
Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11
SC 4.0. Forested Wetlands
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).
Yes = Category I No = Not a forested wetland for this section
SC 5.0. Wetlands in Coastal Lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
⎯ 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, rocks
⎯ The 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)
Yes – Go to SC 5.1 No = Not a wetland in a coastal lagoon
SC 5.1. Does the wetland meet all of the following three conditions?
⎯ 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.
⎯ The wetland is larger than 1/ ac (4350 ft2) 10
Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
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.
In practical terms that means the following geographic areas:
X Long Beach Peninsula: Lands west of SR 103
⎯ Grayland-Westport: Lands west of SR 105
⎯ Ocean Shores-Copalis: Lands west of SR 115 and SR 109
Yes – Go to SC 6.1 No = not an interdunal wetland for rating
SC 6.1. 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)? Yes = Category I No – Go to SC 6.2
SC 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 6.3
SC 6.3. 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?
Yes = Category III No = Category IV
Category of wetland based on Special Characteristics
If you answered No for all types, enter “Not Applicable” on Summary Form
Not
Applicable
Wetland name or number A
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APPENDIX C
ROUTINE DETERMINATION METHOD AND PLANT INDICATOR RATING DEFINITIONS
ROUTINE DETERMINATION METHOD
The Routine Determination Method is defined according to the U.S. Army Corps of Engineers’
1987 Wetland Delineation Manual and the Regional Supplement to the Corps of Engineers’
Wetland Delineation Manual (Environmental Laboratory 1987); Western Mountains, Valleys, and
Coast Region (Version 2.0) (Corps 2010). The Routine Determination Method examines three
parameters – vegetation, soils, and hydrology – to determine if wetlands exist in a given area.
Hydrology is critical in determining what is a wetland, but if often difficult to assess because
hydrologic conditions can change periodically (hourly, daily, or seasonally). Consequently, it is
necessary to determine if hydrophytic vegetation and hydric soils are present, which would
indicate that water is present for a long enough duration to support a wetland plant community. By
definition, wetlands are those areas that are inundated or saturated by surface or groundwater at a
frequency and duration sufficient to support, and that under normal circumstances do support, a
prevalence of vegetation typically adapted for life in saturated soil conditions.
VEGETATION INDICATOR STATUS
The indicator status, following the scientific names of plant species, indicates the likelihood of the
species to be found in wetlands according to the National Wetland Plant List Indicator Rating
Definitions (Corps 2012). Listed from most likely to least likely to be found in wetlands, the
indicator status categories are:
▪ OBL (obligate wetland) - occur almost always under natural conditions in wetlands.
▪ FACW (facultative wetland) - usually occur in wetlands, but occasionally found in non-
wetlands.
▪ FAC (facultative) - equally likely to occur in wetlands or non-wetlands.
▪ FACU (facultative upland) - usually occur in non-wetlands, but occasionally found in
wetlands.
▪ UPL (obligate upland) - occur almost always under natural conditions in non-wetlands.
▪ NI (no indicator) - insufficient data to assign to an indicator category.