202 Happy Valley Mitigation Site...Mar 26, 2018 · What is the 202 Sahalee Way (Happy Valley)...
Transcript of 202 Happy Valley Mitigation Site...Mar 26, 2018 · What is the 202 Sahalee Way (Happy Valley)...
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202 Happy Valley Mitigation Site
SR 202 Improvement Project: SR 520 to Sahalee Way NE USACE IP 2004-00024
SR 202 Junction with 244th Avenue Northeast Signalization and
Channelization (MP 12.92 to MP 13.04) & Temporary Signal (MP 13.00) NWS-2005-1158
SR 520: West Lake Sammamish Parkway to SR 202 Widening (MP11.40 to
12.83) NWS-2007-1926
Northwest Region
2017 MONITORING REPORT
Wetlands Program
Issued March 2018
Environmental Services Office
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Author: Sean Patrick
Editor:
Doug Littauer
For additional information about this report or the WSDOT Wetlands Program, please contact:
Doug Littauer, Wetlands Program WSDOT, Environmental Services Office P. O. Box 47332, Olympia, WA 98504 Phone: 360-570-2579 E-mail: [email protected]
Monitoring reports are published on the web at: http://www.wsdot.wa.gov/Environment/Wetlands/Monitoring/reports.htm
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202 Happy Valley Mitigation Site
SR 202 Improvement Project: SR 520 to Sahalee Way NE – USACE IP 2004-00024
SR 202 Junction with 244th Avenue Northeast Signalization and Channelization (MP 12.92 to MP 13.04) & Temporary Signal (MP 13.00) – NWS-2005-1158
SR 520: West Lake Sammamish Parkway to SR 202 Widening (MP11.40 to 12.83) – NWS-2007-1926
1 Wetland impact acreage was referenced from the applicable USACE permits (USACE 2004, USACE 2005, USACE 2007). 2 Mitigation acreages were referenced from the Final Wetland & Stream Mitigation Plan SR 202 Improvement Project: SR 520 to Sahalee Way NE (WSDOT 2005) and are only for the 202 Happy Valley mitigation site. Additional mitigation acreage is provided at the 202 Turple mitigation site.
General Site Information USACE Permit Numbers
200400024, NWS-2005-1158, NWS-2007-1926
Mitigation Location
At the intersection of SR 202 and Sahalee Way, King County
LLID Number 1220631476556 Construction Date 2006-2007 Monitoring Period 2008-2017 Year of Monitoring 10 of 10 Area of Project Wetland Impact1 2.39 acres
Type of Mitigation Wetland Establishment
Wetland Enhancement
Buffer Enhancement
Planned Area of Mitigation2 5.43 acres 1.72 acres 5.76 acres
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202 Happy Valley 1 2017 Annual Monitoring Report
Summary of Monitoring Results and Management Activities (2017)
Performance Standards 2017 Results3 Management Activities
Wetland hydrology will be present Hydrology was present in all intended wetland areas during the March 20 delineation visit
Installed pond leveler on 12/3/2015
Wetland delineation: 8.07 acres of new wetlands in total (202 Happy Valley and 202 Turple combined)
6.23 acres of new wetland (Happy Valley site only)
75% cover of native FAC or wetter woody species in the PSS/PFO 20% cover (visual estimate)
50% cover of native woody species in the upland buffer 85% cover (CI80% = 71-99%)
Less than 20% cover of King County listed Class A weeds, reed canarygrass (Phalaris arundinacea), non-native blackberries (Rubus species), Scotch broom (Cytisus scoparius), Japanese knotweed (Reynoutria japonica), and purple loosestrife (Lythrum salicaria)
Class A weeds: none observed Other species (visual estimates): 10% in the wetland < 5% in the buffer
2015: 7 weed control visits 2016: 6 weed control visits 2017: 2 weed control visits
Three native facultative or wetter vegetation species will achieve 8% relative cover in the scrub-shrub wetland community
Not assessed due to deep inundation
Three native facultative or wetter vegetation species will achieve 8% relative cover in each forested wetland community
Not assessed due to deep inundation
Less than 30% relative cover of each red alder (Alnus rubra) and black cottonwood (Populus balsamifera) in the wetland < 5% for each (visual estimates)
Three native upland vegetation species will achieve 8% relative cover in each buffer community
5 species with ≥ 8 percent relative cover
Report Introduction This report summarizes final-year (Year 10) monitoring activities at the 202 Happy Valley Mitigation Site. Included are a site description, the performance standards, an explanation of monitoring methods, and an evaluation of site success. Monitoring activities in 2017 included vegetation surveys, photo-documentation, and a wetland delineation. A wetland delineation and an assessment of hydrology were conducted on March 20. Vegetation monitoring occurred on July 17 to 18. 3 Estimated values are presented with their corresponding statistical confidence interval. For example, 85% cover (CI80% = 71-99%) means we are 80% confident that the true cover value is between 71% and 99%.
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202 Happy Valley 2 2017 Annual Monitoring Report
What is the 202 Sahalee Way (Happy Valley) Mitigation Site? This 16.7 -acre property (Figure 1) contains a new wetland established on the south side of SR 202, approximately 1.5 miles east of Lake Sammamish. This site was established to partially compensate for the loss of 4.39 acres of wetlands due to road improvements along SR 202 and SR 520. The rest of the mitigation for this project is taking place at SR 202 Sahalee Way NE Wetland Mitigation Site #1 (Turple). The mitigation at these sites is intended to provide the following functions: flood flow alteration, sediment removal, nutrient/toxicant removal, erosion control and shoreline stabilization, production/export of organic matter, general habitat suitability, habitat for aquatic invertebrates, habitat for amphibians, and general fish habitat.
Figure 1 Site Sketch The 202 Sahalee Way Happy Valley Mitigation Site consists of established forested and scrub-shrub wetlands surrounded by upland buffer on all sides but the northwest corner. Evans Creek runs through the northwest corner of the site and an unnamed tributary, designed to function as a backwater channel, runs through the center. Directions to the site are included in Appendix 2.
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202 Happy Valley 3 2017 Annual Monitoring Report
What are the performance standards for this site? Year 10 Performance Standard 1 The soils will be saturated to the surface, or standing water will be present in a monitoring well at 12 inches below the surface or less, for a consecutive number of days greater than or equal to 12.5 percent of the growing season. Wetland hydrology will be determined using indicators of wetland hydrology, as listed in the Washington State Wetlands Identification and Delineation Manual (Ecology publication #96-94). Performance Standard 2 The wetland areas will be delineated using current methodology to assure that the mitigation sites contain 8.07 acres of new wetlands in total. Performance Standard 3 Native facultative or wetter woody species will achieve 75 percent coverage in each scrub-shrub and forested wetland community. Native colonizing vegetation will be counted in this coverage calculation. Performance Standard 4 Native upland buffer woody species will achieve 50 percent coverage in each upland buffer community. Native colonizing vegetation will be counted in this coverage calculation. Performance Standard 5 King County listed Class A weeds and reed canarygrass, non-native blackberries, Scot’s broom, Japanese knotweed, and purple loosestrife will not exceed 20 percent coverage in each forested, scrub-shrub, and emergent wetland and upland buffer community. If coverage by native plant species falls below 80 percent of the success standard, then contingency actions shall be implemented and the invasive species list shall be evaluated to determine if additional invasive species should be controlled. Performance Standard 6 Three native facultative or wetter vegetation species will achieve eight percent relative cover in the scrub-shrub wetland community.
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202 Happy Valley 4 2017 Annual Monitoring Report
Performance Standard 7 Three native facultative or wetter vegetation species will achieve eight percent relative cover in each forested wetland community. Performance Standard 8 Relative cover of red alder and black cottonwood will be less than 30 percent for each species in the wetland creation and enhancement areas. Performance Standard 9 Three native upland vegetation species will achieve eight percent relative cover in each buffer community. Appendix 1 shows the as-built planting plans (WSDOT 2008a).
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202 Happy Valley 5 2017 Annual Monitoring Report
How were the performance standards evaluated? WSDOT staff performed a wetland delineation using methods described in the Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987), Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0) (USACE 2010) and a Global Positioning System (Trimble Mapping Grade) (Performance Standard 2). The tables below document the sampling methodology utilized for the remaining performance standards (PS) as required by the mitigation plan and permits. For additional details on the methods see the WSDOT Wetland Mitigation Site Monitoring Methods Paper (WSDOT 2008b).
Figure 2 Site Sampling Design (2017)
Placement of Baseline: Two segments: one along the wetland/buffer boundary in the southern half of the site and one through the buffer on the northern half of the site. Segmented Baseline: Length 135m Transects 1–2 Length 294m Transects 3–8
PS 3 PS 4&9 PS 5 PS 8 Attribute Cover Cover Cover Cover
Target population
Native woody species
Native woody species
Noxious weeds
Red alder/ black
cottonwood
Zone PSS/PFO Buffer Entire site Wetland
Sample method
Visual Estimate
Line Intercept
Visual Estimate
Visual Estimate
SU length n/a 10 n/a n/a
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202 Happy Valley 6 2017 Annual Monitoring Report
Is this site a success? This site is successful despite its development differing significantly from what was planned. Due to persistent and extensive inundation throughout much of the wetland area, caused by beaver activity during the second half of the monitoring period, the wetland woody plantings have suffered high mortality and the resulting native woody cover in these areas did not meet the final-year performance standard (Performance Standard 3). Beaver are native to this area and are a natural component of riparian wetland environments such as this one. Attempts were made by WSDOT to limit the extent of inundation caused by the beaver dams by installing a pond leveler in 2015. Although much of the scrub-shrub and forested wetland areas have developed differently than intended, the plant communities that have developed in these areas are diverse and dominated by native species, but with a much larger emergent component than anticipated. Cover of invasive species is still relatively low and mainly consists of species that are ubiquitous to the area and not of major concern in this context. The buffer community has developed very well and is easily meeting its final-year performance standards (Performance Standards 4 and 9). Wildlife observations on-site include Pacific chorus frogs, garter snakes, and evidence of deer, coyote, and beaver. A large variety of birds have been observed on-site including many wetland-dependent species such as Belted Kingfisher, Bufflehead, Canada Goose, Common Yellowthroat, Gadwall, Great Blue Heron, Green-winged Teal, Hooded Merganser, Lesser Yellowlegs, Mallard, Marsh Wren, Northern Shoveler, Red-winged Blackbird, and Wilson’s Snipe.
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202 Happy Valley 7 2017 Annual Monitoring Report
Results for Performance Standards 1 and 2 (Wetland hydrology and wetland delineation): A wetland delineation was conducted on March 20, 2017. A total of 8.34 acres of wetland were delineated on-site, 6.23 acres of which are newly established wetland. During the delineation visit, inundation (Photo 1) or water within the upper 12 inches of the soil surface was present in all intended wetland areas of the site. Results for Performance Standard 3 (75% cover of native FAC or wetter woody species in the PSS/PFO): Cover of native facultative or wetter woody species in the scrub-shrub (Photo 2) and forested wetland (Photo 3) areas of the site was visually estimated at 20 percent overall. This is below the performance standard target. The majority of these areas have been consistently inundated for the last several years due to beaver activity. Many of the woody plantings have died and, therefore, woody cover has decreased significantly. Most of these areas are now generally dominated by native emergent species including broadleaf cattail (Typha latifolia), rice cutgrass (Leersia oryzoides), woolgrass (Scirpus cyperinus), soft rush (Juncus effusus), and many other species. The cover of native emergent species in these areas was visually estimated at 70 percent overall.
Photo 1 Inundation in the wetland (March 2017)
Photo 2 Woody and emergent cover in the scrub-shrub wetland (July 2017)
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202 Happy Valley 8 2017 Annual Monitoring Report
Results for Performance Standard 4 (At least 50% cover of native woody species in the upland buffer): Cover of native woody species in the upland buffer (Photo 4) is estimated at 85% (CI80% = 71-99%). This exceeds the performance standard target. Results for Performance Standard 5 (Less than 20% cover of specified noxious weeds): Of the species listed in the performance standard, only reed canarygrass, Himalayan blackberry (Rubus armeniacus), and cutleaf blackberry (Rubus laciniatus) were observed on-site. Cover in the buffer was primarily of non-native blackberries and was visually estimated at five percent. Cover in the wetland was primarily of reed canarygrass and was visually estimated at 10 percent.
Photo 3 Woody cover in the forested wetland (July 2017)
Photo 4 Woody cover in the upland buffer (July 2017)
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202 Happy Valley 9 2017 Annual Monitoring Report
Results for Performance Standard 6 and 7 (Three species will achieve 8% relative cover in the scrub-shrub and forested wetland): These areas were not quantitatively sampled in 2017 because of access issues due to deep inundation in much of these zones. Visual estimates of relative cover are extremely difficult and unreliable in most situations. After the changes to the woody communities in these zones over the last few years and the resulting patchy cover, it is unclear whether the remaining woody species are meeting this performance standard. Overall, woody diversity in these zones has likely decreased along with the overall woody cover, as the species less equipped to handle inundation have suffered the larger proportion of the mortality on-site. At the same time, the native emergent community that has developed in these zones is quite diverse and would likely be meeting this performance standard if it were applied to the emergent vegetation. Results for Performance Standard 8 (Less than 30% relative cover of each red alder and black cottonwood in the wetland): The wetland areas were not quantitatively sampled in 2017 (see results for Performance Standards 6 and 7 above) so the relative cover of these species are unknown, but based on visual observation it is clearly less than 30 percent for each of these species. Results for Performance Standard 9 (Three species will achieve 8% relative cover in the buffer): Within our sample, five woody species achieved at least eight percent relative cover in the buffer: tall oregongrape (Mahonia aquifolium), Douglas-fir (Pseudotsuga menziesii), snowberry (Symphoricarpos albus), red elderberry (Sambucus racemosa), and Sitka willow (Salix sitchensis). Bigleaf maple (Acer macrophyllum) and red alder were also close, at seven and six percent relative cover respectively. What is planned for this site? Routine weed control will continue in 2018.
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202 Happy Valley 10 2017 Annual Monitoring Report
Appendix 1 – As-Built Planting Plans (WSDOT 2008a)
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202 Happy Valley 11 2017 Annual Monitoring Report
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202 Happy Valley 12 2017 Annual Monitoring Report
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202 Happy Valley 13 2017 Annual Monitoring Report
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202 Happy Valley 14 2017 Annual Monitoring Report
Appendix 2 – Photo Points The photographs below were taken from permanent photo-points on July 18, 2017 and document current site development.
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202 Happy Valley 15 2017 Annual Monitoring Report
Photo Point 1a
Photo Point 1c
Photo Point 1b
Photo Point 2a
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202 Happy Valley 16 2017 Annual Monitoring Report
Photo Point 2b
Photo Point 3a
Photo Point 2c
Photo Point 3b
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202 Happy Valley 17 2017 Annual Monitoring Report
Photo Point 3c
Photo Point 3e
Photo Point 3d
Photo Point 3f
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202 Happy Valley 18 2017 Annual Monitoring Report
Photo Point 3g
Photo Point 4b
Photo Point 4a
Photo Point 4c
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202 Happy Valley 19 2017 Annual Monitoring Report
Photo Point 4d
Photo Point 4e
Driving Directions: From I-5 northbound take Exit 14 for WA-520 West/WA-520 E toward Seattle/Redmond. Keep right at the fork to continue toward WA-520 East and merge onto WA-520 East. Take the WA-202 East exit. Merge onto Redmond Way/WA-202. Continue to follow WA-202. Turn Right on Sahalee Way and park inside the gate on-site.
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202 Happy Valley 20 2017 Annual Monitoring Report
Appendix 3 – Wetland Delineation Report
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WETLAND DELINEATION REPORT
SR 202 Sahalee Way Happy Valley Mitigation Site
SR 202 Improvement Project: SR 520 to Sahalee Way NE USACE IP 200400024
SR 520: West Lake Sammamish Parkway to
SR 202 Widening (MP11.40 to 12.83) USACE NWS-2007-1926-SOD
SR 202 Junction with 244th Avenue Northeast
Signalization and Channelization (MP 12.92 to MP 13.04) & Temporary Signal (MP 13.00)
USACE NWS-2005-1158
King County, Washington
Prepared by:
Kristen Andrews WSDOT Environmental Services Office
Olympia, Washington
November 2017
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 1
Introduction This report was prepared by the Washington State Department of Transportation (WSDOT) to describe the wetland boundary delineation for the 202 Sahalee Way Happy Valley Mitigation Site. Field work was conducted by WSDOT wetland biologists Tatiana Dreisbach and Sean Patrick, on March 30, 2017. The delineation identifies 8.39 acres of wetland within the mitigation site boundaries. The wetland was previously delineated in May 3013 (WSDOT 2013). The purpose of the 2017 field work was to reevaluate the 2013 wetland boundary and document any wetland boundary modifications if necessary. This report updates and replaces the 2013 delineation report. The 2017 delineation resulted in a minor wetland boundary amendment (Figure 1).
General Information for the SR 202 Sahalee Way Happy Valley Mitigation Site
Location: S17, T25N, R6E. King County. (Vicinity map, Figure 1)
USACE NWP, IP Numbers
IP 200400024, NWS-2007-1926-SOD, NWS-2005-1158
Long./Lat. ID Number 1220631476556 Land Resource Region (LRR) A
Major Land Resource Area (MLRA) 2
Construction Date 2007
Monitoring Period 2008 - 2017
Year of Monitoring 10 of 10 (in 2017)
Area of Project Impact1 2.39 acres Type of Mitigation Required Acreage1 2017 Delineated Acreage
Establishment 5.43 5.20
Enhancement 1.72 1.11
Totals 27.15 6.31
Total Delineated Wetland Area
In addition to 6.31 acres of wetland occurring within the required establishment and enhancement areas, an additional 2.03 acres of wetland is present in upland buffer enhancement and wetland preservation areas as well as areas designated as open water. There is also approximately 0.04 acre of wetland that falls out of the planted areas of the mitigation site The total delineated wetland area within the study area is 8.34 acres (Figure 2).
1 Project impact acreages from USACE Permits IP 200400024, NWS-2007-1926-SOD, NWS-2005-1158.
Required mitigation acreages from WSDOT 2008, Table 11. 2 The required wetland mitigation acreage is for this site is 7.15 acres. Additional wetland acreage is
provided at the 202 Turple mitigation site.
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 2
Location
Figure 1. Vicinity Map
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 3
Methods Wetland boundaries within the Happy Valley Mitigation Site were delineated using routine methods described in the:
• Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987),
• Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0) (USACE 2010)
Wetland boundaries were delineated based on on-site observations of hydrology, soils, and plant communities, in conjunction with background information.
Mitigation sites are recognized as difficult wetland situations in the regional supplements and may have problematic hydric soils or lack one of the other factors (USACE 2010). Wetland determination data forms provide a rationale for the delineated boundary when one or more of the factors are problematic (Appendix A W1-SP1, W1-SP2, W1-SP4).
A Global Positioning System (GPS) Trimble GeoXT mapping grade unit was used to record wetland boundaries and sampling point locations (Figure 2). Wetland boundary points were recorded at regular intervals and at any change in direction along the boundary. Wetland mitigation types (Figure 2) were georeferenced by digitizing the mitigation site as-built planting plan in ArcGIS 10.5.1. Inherent in both GPS and georeferencing are minute errors, resulting in slight inaccuracies in both boundary line placement and acreage calculations. These tools represent the best available methods at the time of the study and report preparation.
Wetland Delineation and Study Area Study Area Wetlands described in this report were assessed only within the wetland mitigation site boundary (Figure 2). Wetland preservation areas are present within the mitigation site boundary and were included in this delineation.
Wetlands The Happy Valley Mitigation Site has depressional and riverine wetland areas with a variety of Cowardin classes. Palustrine aquatic bed (PAB), palustrine emergent (PEM), and palustrine scrub-shrub (PSS) characterize the wetland vegetation communities. Wetter areas of the wetland are dominated by PAB and PEM communities, forming gaps in the canopy and contributing complexity to the habitat and structure of the wetland.
The delineation determined 8.39 acres of wetland were present within the 202 Happy Valley Mitigation Site. Delineation data were collected at seven sampling points and
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 4
recorded on wetland determination data forms (Appendix A). Paired wetland and upland sample points were used to define the wetland edge. Additional wetland sample points characterize various wetland vegetation communities. Data recorded on wetland determination data forms characterize typical wetland and upland conditions observed on site. Vegetation, soils, and hydrology were examined in many additional sampling locations to determine the wetland boundary.
Precipitation The Regional Delineation Supplement Version 2.0 (USACE 2010) recommends using methods described in Chapter 19 in Engineering Field Handbook (NRCS 2015) to determine if precipitation occurring in the three full months prior to the site visit was normal, drier than normal, or wetter than normal. Actual rainfall is compared to the normal range of the 30-year average. When considering the three prior months as a whole, wetter than normal precipitation conditions were present prior to field work. One of the three months prior to field work was drier than normal with the first and second prior months wetter than normal (Appendix B-1).
Heavy precipitation was recorded in the ten days preceding field work (Appendix B-2).
Growing Season The following evidence of the growing season was observed at the time of the delineation:
• Blooms present on tall oregongrape (Mahonia aquifolium)
• Buds breaking on red elderberry (Sambucus racemosa)
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 5
Figure 2. Site Boundary in black, wetland boundary in red, and sampling point locations in black.
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 6
202 Happy Valley Mitigation Site – Wetland Delineation Summary
Total Delineated Wetland Area 8.34 acres
Wetland Determination Data Forms
Appendix A; Sampling Points W1-SP1, W1-SP2, W1-SP4, W2-SP1
Upland Determination Data Forms
Appendix A; Sampling Points W1-SP3 and W1-SP5, W2-SP2
Delineators Tatiana Dreisbach, Sean Patrick, Tony Bush
Delineation Date May 20, 2013 and March 20, 2017
Vegetation
Trees – black cottonwood (Populus balsamifera), Oregon ash (Fraxinus latifolia) and red alder (Alnus rubra) Shrubs – hardhack (Spiraea douglasii), Pacific willow (Salix lasiandra), Sitka willow (Salix sitchensis), Scouler's willow (Salix scouleriana), cluster rose (Rosa pisocarpa), Pacific ninebark (Physocarpus capitatus) Herbs – broadleaf cattail (Typha latifolia), soft rush (Juncus effusus), woolgrass (Scirpus cyperinus), rice cutgrass (Leersia oryzoides), slough sedge (Carex obnupta),
Soils
Soils examined to a depth of 18 inches exhibited hydric characteristics. Matrix colors of 10YR 3/2 were observed. Redoximorphic concentrations and depletions were observed in some layers. Indicator F6 met at W2-SP1. Although hydric soil indicators were not observed at the other sample points, soils meet criteria for problematic hydric soils (recently developed wetlands).
Hydrology
Groundwater, surface water runoff, and flooding from Evans Creek appear to be the main sources of hydrology. Precipitation and snow melt also contribute to the hydrologic regime of this wetland. Water in the observation pits ranged from 0 inches (at the soil surface) to 8 inches below the surface. Surface water deeper than two feet was observed in some areas with the open water areas even deeper than that.
Rationale for Delineation
Positive indicators of all three wetland criteria are present. Placement of boundary determined primarily by the presence of water and somewhat by vegetation and topographic break. In some areas, inundation encroached on the buffer vegetation causing a die off of upland species. Distinct topographic break present in some areas.
Limitations This wetland delineation report documents the investigation, best professional judgment and conclusions of WSDOT based on the site conditions encountered at the time of this study. The wetland delineation was performed in compliance with accepted standards for professional wetland biologists and applicable federal, state, and local ordinances. It is correct and complete to the best of our knowledge. It should be considered a preliminary jurisdictional determination of wetlands and other waters until it has been reviewed and approved in writing by the appropriate jurisdictional authorities.
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report 7
References 1. Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual.
Vicksburg (MS): US Army Engineer Waterways Experiment Station. Technical Report Y-87-1. Available from: http://www.swl.usace.army.mil/Portals/50/docs/regulatory/wlman87.pdf
2. [NRCS] Natural Resource Conservation Service. 2015. Hydrology Tools for Wetland Identification and Analysis. Chapter 19 in Part 650 Engineering Field Handbook. Pages 19-85 through 19-89. US. Department of Agriculture, NRCS. Available from: http://directives.sc.egov.usda.gov/OpenNonWebContent.aspx?content=37808.wba
3. [NRCS] Natural Resources Conservation Service [Internet]. 2017. Field Office Technical Guide. US Department of Agriculture. Climate Data for Snohomish County, Station Monrore, Washington. [cited 2017 Nov 8]. Available at: http://efotg.sc.egov.usda.gov/efotg_locator.aspxt
4. [NRCS] Natural Resource Conservation Service [Internet]. 2017. Web Soil Survey for King County, Washington. US Department of Agriculture. [cited 2017 Nov 8]. Available at: http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx
5. US Army Corps of Engineers. 2014. National Wetland Plant List, version 3.2 [Internet]. US Army Corps of Engineers, Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, Hanover, NH. Available at: http://rsgisias.crrel.usace.army.mil/NWPL/
6. [USACE] US Army Corps of Engineers. 2004. Department of the Army Individual Permit Number 200400024.
7. [USACE] US Army Corps of Engineers. 2005. Department of the Army Nationwide Permit Number (23) 200501158.
8. [USACE] US Army Corps of Engineers. 2007. Department of the Army Individual Permit Number NWS_2007-1926-SOD.
9. [USACE] US Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0), ed. Wakeley JS, Lichvar RW, Noble CV, editors. Vicksburg (MS): US Army Engineer Research and Development Center. ERDC/EL TR-10-3. Available at: http://www.usace.army.mil/Portals/2/docs/civilworks/regulatory/reg_supp/west_mt_finalsupp.pdf
10. [WSDOT] Washington State Department of Transportation. 2005. Final Wetland and Stream Mitigation Plan. SR 202 Improvements Project: SR 520 to Sahalee Way NE. Seattle (WA): Washington State Department of Transportation, Northwest Region.
11. [WSDOT] Washington State Department of Transportation. 2008. Final Wetland Mitigation Report. SR 520 West Lake Sammamish Parkway to SR 202 Project. Seattle (WA): Washington State Department of Transportation, Northwest Region.
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report
Appendix A —Wetland Determination Data Forms Wetland Delineation Data Forms for: W1-SP1 W1-SP2 W1-SP3 W1-SP4 W1-SP5 W2-SP1 W2-SP2 Wetland polygons, sampling point locations, and wetland names shown in Figure 2.
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report
Appendix B — Precipitation Data
Appendix B-1. Comparison of Observed and Normal Precipitation (NRCS 2015) Monthly precipitation data for Monroe, Washington.
Long-term rainfall recordsa
Month 3 yrs. in 10 less
than Average
3 yrs. in 10 more
than Rain falla
Condition dry, wet, normalb
Condition Value
Month weight value
Product of previous two
columns
1st prior month March 3.99 5.09 5.87 9.22 W 3 3 9
2nd prior month Feb 3.48 4.79 5.65 9.02 W 3 2 6
3rd prior month Jan 4.35 6.14 7.28 3.41 D 1 1 1
Sum 16
a NRCS 2017 b Conditions are considered normal if they fall within the low and high range around the average.
Note: If sum is Condition value: 6 - 9 then prior period has been drier than normal Dry (D) =1
10 - 14 then period has been normal Normal (N) =2 15 - 18 then period has been wetter than normal Wet (W) =3
Conclusions: Wetter than normal precipitation conditions were present prior to the field visit.
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202 Happy Valley Mitigation Site November 2017 Wetland Delineation Report
Appendix B-2. Daily Precipitation 10 days preceding field work
Daily precipitation data for Monroe, Washington.
Date (2017)
Daily Precipitation (inches)a
March 29 0.60
March 28 0.42
March 27 0.19
March 26 0.07
March 25 0.00
March 24 0.83
March 23 0.01
March 22 0.05
March 21 0.23
March 20 0.01
Sum 2.41 a NRCS 2017
Conclusions: Heavy precipitation was recorded in the ten days preceding field work.
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present?
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
Remarks:
Dominance Test worksheet:
Tree Stratum (Plot size: )1. (A)2.3. (B)4.
= Total Cover (A/B)Sapling/Shrub Stratum (Plot size: )
2.3. OBL species x 1 =4. FACW species x 2 =5. FAC species x 3 =
= Total Cover FACU species x 4 =Herb Stratum (Plot size: ) UPL species x 5 =1. Column Totals: (A) (B)
4. Hydrophytic Vegetation Indicators:
5. 1 - Rapid Test for Hydrophytic Vegetation6. 2 - Dominance Test is >50%7. 3 - Prevalence Index is ≤3.0¹8. 4 -9.
10. 5 - Wetland Non-Vascular Plants¹11. Problematic Hydrophytic Vegetation¹ (Explain)
= Total CoverWoody Vine Stratum (Plot size: )
2.
Remarks:
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
202 Happy Valley King County 3/20/2017
WSDOT WA w1-sp1
Briscott silt loam PEM
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Is the Sampled Area within a Wetland?
Hydric Soil Present?Wetland Hydrology Present?
Tatiana Dreisbach, Sean Patrick S17, T25N, R6E
depression concave 5
A 47.656 -122.064 NAD83HARN
VEGETATION – Use scientific names of plants.
Absolute % Cover
Dom. Sp.?
Relative % Cover
Indicator Status15ft x 15ft Number of Dominant Species
That Are OBL, FACW, or FAC: 2
Total Number of Dominant Species Across All Strata: 2
100.0%15ft x 15ft
1. Spiraea douglasii 20 Y 100.0 FACW Prevalence Index worksheet:
Percent of Dominant Species That Are OBL, FACW, or FAC:
Total % Cover of: Multiply by:70 70
20 0 05ft x 5ft 0 0
400 020
Prevalence Index = B/A = 1.222
1102.
Typha latifolia 70 Y 100.0 OBL 90
3.
Morphological Adaptations¹ (Provide supporting data in Remarks or on a separate sheet)
70 ¹Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic.5ft x 5ft
Hydrophytic Vegetation Present?
= Total Cover% Bare Ground in Herb Stratum 30
1.
dead woody plantings including syal and psme in this area spdo and tyla have established in this location due to beaver creating permanent ponding.
Yes NoYes NoYes No
Yes No
Yes No
Yes No
Yes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
¹Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. ²Location: PL=Pore Lining, M=Matrix.Hydric Soil Indicators: (Applicble to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils³:
Restrictive Layer (if present):
Type:Depth (inches): Hydric Soil Present?
Remarks:
Wetland Hydrology Indicators:Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Field Observations:
Surface Water Present? Depth (inches):Water Table Present? Depth (inches):Saturation Present? Depth (inches): Wetland Hydrology Present?(includes capillary fringe)Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
SOIL w1-sp1
Depth (inches)
Matrix Redox FeaturesColor (moist) % Color (moist) % Type¹ Loc² Texture Remarks
³Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
0
Beaver have built extensive dams across the site and this has caused a rise in water since last delineation.
A soil pit was not excavated due to the presence of water (see hydrology section below). This soil meets the definition of a hydric soil due to the presence of inundation, saturation, or a high water table for extended periods during the growing season.
HYDROLOGY
70
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Mucky Mineral (S1)Sandy Gleyed Matrix (S4)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox Depressions (F8)
2 cm Muck (A10)Red Parent Material (TF2)Very Shallow Dark Surface (TF12)Other (Explain in Remarks)
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1)Sediment Deposits (B2)Drift Deposits (B3)Algal Mat or Crust (B4)Iron Deposits (B5)Surface Soil Cracks (B6)Inundation Visible on Aerial Imagery (B7)Sparsely Vegetated Concave Surface (B8)
Water-Stained Leaves (B9) (except
Salt Crust (B11)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres along Living Roots (C3)Presence of Reduced Iron (C4)Recent Iron Reduction in Tilled Soils (C6)Stunted or Stressed Plants (D1) (LRR A)Other (Explain in Remarks)
Water-Stained Leaves (B9) (MLRA 1, 2,
Drainage Patterns (B10)Dry-Season Water Table (C2)Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)Shallow Aquitard (D3)FAC-Neutral Test (D5)Raised Ant Mounds (D6) (LRR A)Frost-Heave Hummocks (D7)
Yes No
Yes No
Yes NoYes NoYes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present?
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
Remarks:
Dominance Test worksheet:
Tree Stratum (Plot size: )1. (A)2.3. (B)4.
= Total Cover (A/B)Sapling/Shrub Stratum (Plot size: )
2.3. OBL species x 1 =4. FACW species x 2 =5. FAC species x 3 =
= Total Cover FACU species x 4 =Herb Stratum (Plot size: ) UPL species x 5 =1. Column Totals: (A) (B)
4. Hydrophytic Vegetation Indicators:
5. 1 - Rapid Test for Hydrophytic Vegetation6. 2 - Dominance Test is >50%7. 3 - Prevalence Index is ≤3.0¹8. 4 -9.
10. 5 - Wetland Non-Vascular Plants¹11. Problematic Hydrophytic Vegetation¹ (Explain)
= Total CoverWoody Vine Stratum (Plot size: )
2.
Remarks:
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
202 Happy Valley King County 3/20/2017
WSDOT WA W1-SP2
Briscott silt loam PSS
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Is the Sampled Area within a Wetland?
Hydric Soil Present?Wetland Hydrology Present?
Tatiana Dreisbach, Sean Patrick S17, T25N, R6E
depression concave 10
A 47.656 -122.064
VEGETATION – Use scientific names of plants.
Absolute % Cover
Dom. Sp.?
Relative % Cover
Indicator Status5 x 15 Number of Dominant Species
That Are OBL, FACW, or FAC: 1
Total Number of Dominant Species Across All Strata: 1
100.0%5 x15
1. Spiraea douglasii 30 Y 85.7 FACW Prevalence Index worksheet:
Percent of Dominant Species That Are OBL, FACW, or FAC:
Symphoricarpos albus 5 N 14.3 FACU Total % Cover of: Multiply by:0 0
35 5 205ft x 5ft 0 0
600 030
Prevalence Index = B/A = 2.286
802.
35
3.
Morphological Adaptations¹ (Provide supporting data in Remarks or on a separate sheet)
¹Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic.5ft x 5ft
Hydrophytic Vegetation Present?
= Total Cover% Bare Ground in Herb Stratum 100
1.
dead maaq and syal and psme indicating this area is wetland. Dead due to influence of wetland hydrology.
Yes NoYes NoYes No
Yes No
Yes No
Yes No
Yes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
¹Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. ²Location: PL=Pore Lining, M=Matrix.Hydric Soil Indicators: (Applicble to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils³:
Restrictive Layer (if present):
Type:Depth (inches): Hydric Soil Present?
Remarks:
Wetland Hydrology Indicators:Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Field Observations:
Surface Water Present? Depth (inches):Water Table Present? Depth (inches):Saturation Present? Depth (inches): Wetland Hydrology Present?(includes capillary fringe)Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
SOIL W1-SP2
Depth (inches)
Matrix Redox FeaturesColor (moist) % Color (moist) % Type¹ Loc² Texture Remarks
Sandy Loam0-2 10YR 2/1 100
³Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
0
beaver have brought water table up at this location
10YR 2/1 0-2 inches above sandy gravelly loam that lacks hydric soil features due to newly forming soils. Soils problematic. This soil meets the definition of a hydric soil due to the presence of inundation, saturation, or a high water table for extended periods during the growing season.
HYDROLOGY
2
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Mucky Mineral (S1)Sandy Gleyed Matrix (S4)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox Depressions (F8)
2 cm Muck (A10)Red Parent Material (TF2)Very Shallow Dark Surface (TF12)Other (Explain in Remarks)
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1)Sediment Deposits (B2)Drift Deposits (B3)Algal Mat or Crust (B4)Iron Deposits (B5)Surface Soil Cracks (B6)Inundation Visible on Aerial Imagery (B7)Sparsely Vegetated Concave Surface (B8)
Water-Stained Leaves (B9) (except
Salt Crust (B11)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres along Living Roots (C3)Presence of Reduced Iron (C4)Recent Iron Reduction in Tilled Soils (C6)Stunted or Stressed Plants (D1) (LRR A)Other (Explain in Remarks)
Water-Stained Leaves (B9) (MLRA 1, 2,
Drainage Patterns (B10)Dry-Season Water Table (C2)Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)Shallow Aquitard (D3)FAC-Neutral Test (D5)Raised Ant Mounds (D6) (LRR A)Frost-Heave Hummocks (D7)
Yes No
Yes No
Yes NoYes NoYes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present?
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
Remarks:
Dominance Test worksheet:
Tree Stratum (Plot size: )1. (A)2.3. (B)4.
= Total Cover (A/B)Sapling/Shrub Stratum (Plot size: )
2.3. OBL species x 1 =4. FACW species x 2 =5. FAC species x 3 =
= Total Cover FACU species x 4 =Herb Stratum (Plot size: ) UPL species x 5 =1. Column Totals: (A) (B)
4. Hydrophytic Vegetation Indicators:
5. 1 - Rapid Test for Hydrophytic Vegetation6. 2 - Dominance Test is >50%7. 3 - Prevalence Index is ≤3.0¹8. 4 -9.
10. 5 - Wetland Non-Vascular Plants¹11. Problematic Hydrophytic Vegetation¹ (Explain)
= Total CoverWoody Vine Stratum (Plot size: )
2.
Remarks:
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
202 Happy Valley King County 3/20/2017
WSDOT WA W1-SP3
Briscott silt loam upland
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Is the Sampled Area within a Wetland?
Hydric Soil Present?Wetland Hydrology Present?
Tatiana Dreisbach, Sean Patrick S17, T25N, R6E
depression
A 47.656 -122.064
VEGETATION – Use scientific names of plants.
Absolute % Cover
Dom. Sp.?
Relative % Cover
Indicator Status20ft x 20ft Number of Dominant Species
That Are OBL, FACW, or FAC: 1
Total Number of Dominant Species Across All Strata: 4
25.0%15ft x 15ft
1. Mahonia aquifolium 50 Y 57.5 FACU Prevalence Index worksheet:
Percent of Dominant Species That Are OBL, FACW, or FAC:
Symphoricarpos albus 30 Y 34.5 FACU Total % Cover of: Multiply by:Pseudotsuga menziesii 3 N 3.4 FACU 0 0
87 84 3365ft x 5ft 0 0
0Populus balsamifera 2 N 2.3 FAC 14 42Rosa nutkana 2 N 2.3 FAC 0
Prevalence Index = B/A = 3.857
3782. Galium aparine 1 N 3.2 FACU
Holcus lanatus 10 Y 32.3 FAC 98
3. unid heerb 20 Y 64.5 #N/A
Morphological Adaptations¹ (Provide supporting data in Remarks or on a separate sheet)
31 ¹Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic.5ft x 5ft
Hydrophytic Vegetation Present?
= Total Cover% Bare Ground in Herb Stratum 69
1.
Yes NoYes NoYes No
Yes No
Yes No
Yes No
Yes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
¹Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. ²Location: PL=Pore Lining, M=Matrix.Hydric Soil Indicators: (Applicble to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils³:
Restrictive Layer (if present):
Type:Depth (inches): Hydric Soil Present?
Remarks:
Wetland Hydrology Indicators:Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Field Observations:
Surface Water Present? Depth (inches):Water Table Present? Depth (inches):Saturation Present? Depth (inches): Wetland Hydrology Present?(includes capillary fringe)Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
SOIL W1-SP3
Depth (inches)
Matrix Redox FeaturesColor (moist) % Color (moist) % Type¹ Loc² Texture Remarks
Loam
3-20 10YR 2/2 100
0-3 2.5YR 2.5/1 100
Sandy Loam very sandy with gravel
³Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
19
Water table too deep to meet indicator A2.
HYDROLOGY
20
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Mucky Mineral (S1)Sandy Gleyed Matrix (S4)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox Depressions (F8)
2 cm Muck (A10)Red Parent Material (TF2)Very Shallow Dark Surface (TF12)Other (Explain in Remarks)
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1)Sediment Deposits (B2)Drift Deposits (B3)Algal Mat or Crust (B4)Iron Deposits (B5)Surface Soil Cracks (B6)Inundation Visible on Aerial Imagery (B7)Sparsely Vegetated Concave Surface (B8)
Water-Stained Leaves (B9) (except
Salt Crust (B11)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres along Living Roots (C3)Presence of Reduced Iron (C4)Recent Iron Reduction in Tilled Soils (C6)Stunted or Stressed Plants (D1) (LRR A)Other (Explain in Remarks)
Water-Stained Leaves (B9) (MLRA 1, 2,
Drainage Patterns (B10)Dry-Season Water Table (C2)Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)Shallow Aquitard (D3)FAC-Neutral Test (D5)Raised Ant Mounds (D6) (LRR A)Frost-Heave Hummocks (D7)
Yes No
Yes No
Yes NoYes NoYes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present?
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
Remarks:
Dominance Test worksheet:
Tree Stratum (Plot size: )1. (A)2.3. (B)4.
= Total Cover (A/B)Sapling/Shrub Stratum (Plot size: )
2.3. OBL species x 1 =4. FACW species x 2 =5. FAC species x 3 =
= Total Cover FACU species x 4 =Herb Stratum (Plot size: ) UPL species x 5 =1. Column Totals: (A) (B)
4. Hydrophytic Vegetation Indicators:
5. 1 - Rapid Test for Hydrophytic Vegetation6. 2 - Dominance Test is >50%7. 3 - Prevalence Index is ≤3.0¹8. 4 -9.
10. 5 - Wetland Non-Vascular Plants¹11. Problematic Hydrophytic Vegetation¹ (Explain)
= Total CoverWoody Vine Stratum (Plot size: )
2.
Remarks:
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
202 Happy Valley King County 3/20/2017
WSDOT WA w1-sp4
Briscott silt loam PEM
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Is the Sampled Area within a Wetland?
Hydric Soil Present?Wetland Hydrology Present?
Tatiana Dreisbach, Sean Patrick S17, T25N, R6E
depression concave 5
A 47.656 -122.064 NAD83HARN
VEGETATION – Use scientific names of plants.
Absolute % Cover
Dom. Sp.?
Relative % Cover
Indicator Status15ft x 15ft Number of Dominant Species
That Are OBL, FACW, or FAC: 1
Total Number of Dominant Species Across All Strata: 1
100.0%15ft x 15ft
1. Prevalence Index worksheet:
Percent of Dominant Species That Are OBL, FACW, or FAC:
Total % Cover of: Multiply by:85 85
0 05ft x 5ft 0 0
100 05
Prevalence Index = B/A = 1.056
952. Juncus effusus 5 N 5.6 FACW
Typha latifolia 80 Y 88.9 OBL 90
3. Scirpus cyperinus 5 N 5.6 OBL
Morphological Adaptations¹ (Provide supporting data in Remarks or on a separate sheet)
90 ¹Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic.5ft x 5ft
Hydrophytic Vegetation Present?
= Total Cover% Bare Ground in Herb Stratum 10
1.
Yes NoYes NoYes No
Yes No
Yes No
Yes No
Yes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
¹Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. ²Location: PL=Pore Lining, M=Matrix.Hydric Soil Indicators: (Applicble to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils³:
Restrictive Layer (if present):
Type:Depth (inches): Hydric Soil Present?
Remarks:
Wetland Hydrology Indicators:Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Field Observations:
Surface Water Present? Depth (inches):Water Table Present? Depth (inches):Saturation Present? Depth (inches): Wetland Hydrology Present?(includes capillary fringe)Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
SOIL w1-sp4
Depth (inches)
Matrix Redox FeaturesColor (moist) % Color (moist) % Type¹ Loc² Texture Remarks
³Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
0
A soil pit was not excavated due to the presence of water (see hydrology section below). This soil meets the definition of a hydric soil due to the presence of inundation, saturation, or a high water table for extended periods during the growing season.
HYDROLOGY
20
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Mucky Mineral (S1)Sandy Gleyed Matrix (S4)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox Depressions (F8)
2 cm Muck (A10)Red Parent Material (TF2)Very Shallow Dark Surface (TF12)Other (Explain in Remarks)
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1)Sediment Deposits (B2)Drift Deposits (B3)Algal Mat or Crust (B4)Iron Deposits (B5)Surface Soil Cracks (B6)Inundation Visible on Aerial Imagery (B7)Sparsely Vegetated Concave Surface (B8)
Water-Stained Leaves (B9) (except
Salt Crust (B11)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres along Living Roots (C3)Presence of Reduced Iron (C4)Recent Iron Reduction in Tilled Soils (C6)Stunted or Stressed Plants (D1) (LRR A)Other (Explain in Remarks)
Water-Stained Leaves (B9) (MLRA 1, 2,
Drainage Patterns (B10)Dry-Season Water Table (C2)Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)Shallow Aquitard (D3)FAC-Neutral Test (D5)Raised Ant Mounds (D6) (LRR A)Frost-Heave Hummocks (D7)
Yes No
Yes No
Yes NoYes NoYes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present?
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
Remarks:
Dominance Test worksheet:
Tree Stratum (Plot size: )1. (A)2.3. (B)4.
= Total Cover (A/B)Sapling/Shrub Stratum (Plot size: )
2.3. OBL species x 1 =4. FACW species x 2 =5. FAC species x 3 =
= Total Cover FACU species x 4 =Herb Stratum (Plot size: ) UPL species x 5 =1. Column Totals: (A) (B)
4. Hydrophytic Vegetation Indicators:
5. 1 - Rapid Test for Hydrophytic Vegetation6. 2 - Dominance Test is >50%7. 3 - Prevalence Index is ≤3.0¹8. 4 -9.
10. 5 - Wetland Non-Vascular Plants¹11. Problematic Hydrophytic Vegetation¹ (Explain)
= Total CoverWoody Vine Stratum (Plot size: )
2.
Remarks:
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
202 Happy Valley King County 3/20/2017
WSDOT WA W1-SP5
Briscott silt loam upland
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Is the Sampled Area within a Wetland?
Hydric Soil Present?Wetland Hydrology Present?
Tatiana Dreisbach, Sean Patrick S17, T25N, R6E
slope of depression concave 15
A 47.656 -122.064 NAD83HARN
VEGETATION – Use scientific names of plants.
Absolute % Cover
Dom. Sp.?
Relative % Cover
Indicator Status20ft x 20ft Number of Dominant Species
That Are OBL, FACW, or FAC: 1Acer macrophyllum
Total Number of Dominant Species Across All Strata: 5
20 Y 66.7 FACUPseudotsuga menziesii 10 Y 33.3 FACU
20.0%30
1. Mahonia aquifolium 30 Y 75.0 FACU Prevalence Index worksheet:
Percent of Dominant Species That Are OBL, FACW, or FAC:
Symphoricarpos albus 10 Y 25.0 FACU Total % Cover of: Multiply by:0 0
40 74 2960 0
047 1410
Prevalence Index = B/A = 3.612
4372. Schedonorus arundinaceus 5 N 9.8 FAC
Agrostis capillaris 40 Y 78.4 FAC 121
3. Geranium robertianum 2 N
Cardamine oligosperma 2 N 3.9 FACGalium aparine 2 N 3.9 FACU
3.9 FACU
Morphological Adaptations¹ (Provide supporting data in Remarks or on a separate sheet)
51 ¹Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic.5ft x 5ft
Hydrophytic Vegetation Present?
= Total Cover% Bare Ground in Herb Stratum 50
1.
Yes NoYes NoYes No
Yes No
Yes No
Yes No
Yes No
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US Army Corps of Engineers (WSDOT Adapted Form) Western Mountains, Valleys, and Coast – Version 2.0
Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
¹Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. ²Location: PL=Pore Lining, M=Matrix.Hydric Soil Indicators: (Applicble to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils³:
Restrictive Layer (if present):
Type:Depth (inches): Hydric Soil Present?
Remarks:
Wetland Hydrology Indicators:Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
MLRA 1, 2, 4A, and 4B) 4A, and 4B)
Field Observations:
Surface Water Present? Depth (inches):Water Table Present? Depth (inches):Saturation Present? Depth (inches): Wetland Hydrology Present?(includes capillary fringe)Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
SOIL W1-SP5
Depth (inches)
Matrix Redox FeaturesColor (moist) % Color (moist) % Type¹ Loc² Texture Remarks
Loam
7-18 2.5Y 5/2 100
0-7 10YR 2/1 100
Sandy Loam with gravels
³Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
HYDROLOGY
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Mucky Mineral (S1)Sandy Gleyed Matrix (S4)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox Depressions (F8)
2 cm Muck (A10)Red Parent Material (TF2)Very Shallow Dark Surface (TF12)Other (Explain in Remarks)
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1)Sediment Deposits (B2)Drift Deposits (B3)Algal Mat or Crust (B4)Iron Deposits (B5)Surface Soil Cracks (B6)Inundation Visible on Aerial Imagery (B7)Sparsely Vegetated Concave Surface (B8)
Water-Stained Leaves (B9) (except
Salt Crust (B11)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres along Living Roots (C3)Presence of Reduced Iron (C4)Recent Iron Reduction in Tilled Soils (C6)Stunted or Stressed Plants (D1) (LRR A)Other (Explain in Remarks)
Water-Stained Leaves (B9) (MLRA 1, 2,
Drainage Patterns (B10)Dry-Season Water Table (C2)Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)Shallow Aquitard (D3)FAC-Neutral Test (D5)Raised Ant Mounds (D6) (LRR A)Frost-Heave Hummocks (D7)
Yes No
Yes No
Yes NoYes NoYes No
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2 -
3 -
4 -
5 - Wetland Non-Vascular Plants
Indicators of hydric soil and wetland hydrology mustbe present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Dominance Test is > 50%
Prevalence Index is ≤3.0 1
1
1
Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation (Explain)
1
1
1 - Rapid Test for Hydrologic Vegetation
w2-sp1
5.0 2.9
Yes NoYes No
Yes NoYes NoYes No
Yes No
20
202030
5
00000
5
Yes No
40.0%
0.0%
40.0%
0.0%
100.0%0
0.0%
0.0%
0.0% 0 00.0% 40 800.0% 50 150
0 00
0 021.1% FACW
90 23021.1% FAC
2.55621.1% FACW 31.6% FAC
5.3%
0.0%0.0%0.0%0.0%0.0%
95
0.0%
0.0%
0
, or Hydrology
Prevalence Index = B/A =
1.2.3.4.
(A/B)
Project/Site:
Wetland Hydrology Present?
Applicant/Owner:
1.2.3.4.5.
Sampling Date:
Lat.: Long.:
Sampling Point:
Investigator(s):
= Total Cover
% Bare Ground in Herb Stratum:
Landform (hillslope, terrace, etc.):
T
Number of Dominant SpeciesThat are OBL, FACW, or FAC:
1.2.
Remarks:
OBL species
FACW species
FAC species
FACU species
UPL species
Column Totals:
x 1 =
x 2 =
x 3 =
x 4 =
x 5 =
(A)
(A)
Are Vegetation
(B)
Are "Normal Circumstances" present?
1.2.3.4.5.6.7.8.9.10.11.
Soil Map Unit Name:
Datum:
Are climatic/hydrologic conditions on the site typical for this time of year?
Hydrophytic Vegetation Present?
NWI classification:
Remarks:
Tree Stratum
Sapling/Shrub Stratum
*Indicator suffix = National status or professional decision assigned because Regional status not defined by FWS.
R
Absolute% Cover
Are Vegetation
Section, Township, Range: S
significantly disturbed?
Is the Sampled Area
within a Wetland?
Local relief (concave, convex, none):
naturally problematic?
Slope:
(If needed, explain any answers in Remarks.)
, Soil
Summary of Findings - Attach site map showing sampling point locations, transects, important features, etc.
% /
, Soil
Hydric Soil Present?
Western Mountains, Valleys, and Coast - Version 2.0
Woody Vine Stratum
(B)
Herb Stratum
= Total Cover
Subregion (LRR):
IndicatorStatus
°
= Total Cover
= Total Cover
HydrophyticVegetationPresent?
US Army Corps of Engineers
(If no, explain in Remarks.)
Dominance Test worksheet:
City/County:
Percent of dominant SpeciesThat Are OBL, FACW, or FAC:
Total Number of DominantSpecies Across All Strata:
Prevalence Index worksheet:
State:
Total % Cover of: Multiply by:
, or Hydrology
DominantSpecies?Rel.Strat.Cover
0 0.0%
WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region
20-May-13sr 202 happy valley na/king
WSDOT WA
6E25N17Tatiana Dreisbach, Tony Bush
sloping terrace undulating
NAD83HARN-122.06647.655LRR A
Kitsap silt loam, 2 to 8 percent slpoes PEM
Agrostis exarata
Holcus lanatusJuncus effususRanunculus repens
Vicia spp.
(Plot size: 15 x 15 feet
(Plot size: 15 x 15 feet
(Plot size: 5 x 5 feet
(Plot size: 5 x 5 feet
)
)
)
)
VEGETATION - Use scientific names of plants.
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w2-sp1
8
0
Sample point within 2 feet of an area with inundation to 1 inch.
Soil Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Type: C=Concentration. D=Depletion. RM=Reduced Matrix, CS=Covered or Coated Sand Grains ²Location: PL=Pore Lining. M=Matrix
Yes No
Yes No
Yes No
Yes NoYes No
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils :
Restrictive Layer (if present):
Hydric Soil Present?
Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Muck Mineral (S1)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except in MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox depressions (F8)
2 cm Muck (A10)
Other (Explain in Remarks)
Type:
Depth (inches):
Hydrology
Remarks:
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1) Sediment Deposits (B2) Drift deposits (B3)
Algal Mat or Crust (B4)Iron Deposits (B5)
Inundation Visible on Aerial Imagery (B7)
Salt Crust (B11)
Dry Season Water Table (C2)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres on Living Roots (C3)Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Other (Explain in Remarks)
Surface Soil Cracks (B6)
Sparsely Vegetated Concave Surface (B8)
Drainage Patterns (B10)
Frost Heave Hummocks (D7) Stunted or Stressed Plants (D1) (LRR A)
Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)
FAC-neutral Test (D5)
Primary Indicators (minimum of one required; check all that apply)Wetland Hydrology Indicators:
Field Observations:
Surface Water Present?
Water Table Present?Saturation Present?(includes capillary fringe)
Depth (inches):
Depth (inches):
Depth (inches):Wetland Hydrology Present?
Describe Recorded Data (stream gauge, monitor well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast - Version 2.0
Secondary Indicators (minimum of two required)Water-Stained Leaves (B9) (except MLRA 1, 2, 4A, and 4B)
Sandy Gleyed Matrix (S4)
Red Parent Material (TF2)
Water-Stained Leaves (B9) (MLRA 1, 2, 4A, and 4B)
Shallow Aquitard (D3)
Raised Ant Mounds (D6) (LRR A)
3
3
1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth(inches) Color (moist) Color (moist)
Matrix Redox Features% Loc² Texture RemarksType%
concentration is prominent
concentration is prominent
manganese or concentration of organic carbon
1
0-6
6-18
+mottle
+mottle
+mottle
10YR
10YR
3/2
3/2
100
10YR
5YR
7.5YR
10YR 2/1
5/6
5/6
5/1 7
2
5
5
C
C
D M
M
M
M
Sandy Loam
Silt Loam
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2 -
3 -
4 -
5 - Wetland Non-Vascular Plants
Indicators of hydric soil and wetland hydrology mustbe present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Dominance Test is > 50%
Prevalence Index is ≤3.0 1
1
1
Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation (Explain)
1
1
1 - Rapid Test for Hydrologic Vegetation
w2-sp2
5.0 2.9
Yes NoYes No
Yes NoYes NoYes No
Yes No
60
2055
0
00000
10
Yes No
20.0%
0.0%
20.0%
0.0%
100.0%0
0.0%
0.0%
0.0% 0 00.0% 10 200.0% 80 240
0 00
0 066.7% FAC
90 26022.2% FAC
2.8895.6% FACW 5.6% FACW
0.0%
0.0%0.0%0.0%0.0%0.0%
90
0.0%
0.0%
0
, or Hydrology
Prevalence Index = B/A =
1.2.3.4.
(A/B)
Project/Site:
Wetland Hydrology Present?
Applicant/Owner:
1.2.3.4.5.
Sampling Date:
Lat.: Long.:
Sampling Point:
Investigator(s):
= Total Cover
% Bare Ground in Herb Stratum:
Landform (hillslope, terrace, etc.):
T
Number of Dominant SpeciesThat are OBL, FACW, or FAC:
1.2.
Remarks:
OBL species
FACW species
FAC species
FACU species
UPL species
Column Totals:
x 1 =
x 2 =
x 3 =
x 4 =
x 5 =
(A)
(A)
Are Vegetation
(B)
Are "Normal Circumstances" present?
1.2.3.4.5.6.7.8.9.10.11.
Soil Map Unit Name:
Datum:
Are climatic/hydrologic conditions on the site typical for this time of year?
Hydrophytic Vegetation Present?
NWI classification:
Remarks:
Tree Stratum
Sapling/Shrub Stratum
*Indicator suffix = National status or professional decision assigned because Regional status not defined by FWS.
R
Absolute% Cover
Are Vegetation
Section, Township, Range: S
significantly disturbed?
Is the Sampled Area
within a Wetland?
Local relief (concave, convex, none):
naturally problematic?
Slope:
(If needed, explain any answers in Remarks.)
, Soil
Summary of Findings - Attach site map showing sampling point locations, transects, important features, etc.
% /
, Soil
Hydric Soil Present?
Western Mountains, Valleys, and Coast - Version 2.0
Woody Vine Stratum
(B)
Herb Stratum
= Total Cover
Subregion (LRR):
IndicatorStatus
°
= Total Cover
= Total Cover
HydrophyticVegetationPresent?
US Army Corps of Engineers
(If no, explain in Remarks.)
Dominance Test worksheet:
City/County:
Percent of dominant SpeciesThat Are OBL, FACW, or FAC:
Total Number of DominantSpecies Across All Strata:
Prevalence Index worksheet:
State:
Total % Cover of: Multiply by:
, or Hydrology
DominantSpecies?Rel.Strat.Cover
0 0.0%
WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region
20-May-13sr 202 happy valley na/king
WSDOT WA
6E25N17Tatiana Dreisbach, Tony Bush
Toeslope undulating
NAD83HARN-122.06647.654LRR A
Briscot silt loam Upland
Ranunculus repens
Holcus lanatusAgrostis exarataEquisetum telmateia
(Plot size: 15 x 15 feet
(Plot size: 15 x 15 feet
(Plot size: 5 x 5 feet
(Plot size: 5 x 5 feet
)
)
)
)
VEGETATION - Use scientific names of plants.
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w2-sp2
Saturated at 14 inches.
Soil Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Type: C=Concentration. D=Depletion. RM=Reduced Matrix, CS=Covered or Coated Sand Grains ²Location: PL=Pore Lining. M=Matrix
Yes No
Yes No
Yes No
Yes NoYes No
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils :
Restrictive Layer (if present):
Hydric Soil Present?
Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic.
Histosol (A1)Histic Epipedon (A2)Black Histic (A3)Hydrogen Sulfide (A4)Depleted Below Dark Surface (A11)Thick Dark Surface (A12)Sandy Muck Mineral (S1)
Sandy Redox (S5)Stripped Matrix (S6)Loamy Mucky Mineral (F1) (except in MLRA 1)Loamy Gleyed Matrix (F2)Depleted Matrix (F3)Redox Dark Surface (F6)Depleted Dark Surface (F7)Redox depressions (F8)
2 cm Muck (A10)
Other (Explain in Remarks)
Type:
Depth (inches):
Hydrology
Remarks:
Surface Water (A1)High Water Table (A2)Saturation (A3)Water Marks (B1) Sediment Deposits (B2) Drift deposits (B3)
Algal Mat or Crust (B4)Iron Deposits (B5)
Inundation Visible on Aerial Imagery (B7)
Salt Crust (B11)
Dry Season Water Table (C2)Aquatic Invertebrates (B13)Hydrogen Sulfide Odor (C1)Oxidized Rhizospheres on Living Roots (C3)Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Other (Explain in Remarks)
Surface Soil Cracks (B6)
Sparsely Vegetated Concave Surface (B8)
Drainage Patterns (B10)
Frost Heave Hummocks (D7) Stunted or Stressed Plants (D1) (LRR A)
Saturation Visible on Aerial Imagery (C9)Geomorphic Position (D2)
FAC-neutral Test (D5)
Primary Indicators (minimum of one required; check all that apply)Wetland Hydrology Indicators:
Field Observations:
Surface Water Present?
Water Table Present?Saturation Present?(includes capillary fringe)
Depth (inches):
Depth (inches):
Depth (inches):Wetland Hydrology Present?
Describe Recorded Data (stream gauge, monitor well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast - Version 2.0
Secondary Indicators (minimum of two required)Water-Stained Leaves (B9) (except MLRA 1, 2, 4A, and 4B)
Sandy Gleyed Matrix (S4)
Red Parent Material (TF2)
Water-Stained Leaves (B9) (MLRA 1, 2, 4A, and 4B)
Shallow Aquitard (D3)
Raised Ant Mounds (D6) (LRR A)
3
3
1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth(inches) Color (moist) Color (moist)
Matrix Redox Features% Loc² Texture RemarksType%
concentration is faint
1
0-18
+mottle
+mottle
10YR 3/2 98 7.5YR
10Y 5/3
4/1 1
1 D
C M
M
Sandy Loam
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202 Happy Valley 21 2017 Annual Monitoring Report
Literature Cited
1. Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Vicksburg (MS): US Army Engineer Waterways Experiment Station. Technical Report Y-87-1. Available at: http://el.erdc.usace.army.mil/elpubs/pdf/wlman87.pdf
2. [USACE] US Army Corps of Engineers. 2004. Department of the Army Individual Permit Number 200400024.
3. [USACE] US Army Corps of Engineers. 2005. Department of the Army Individual Permit Number NWS-2005-1158.
4. [USACE] US Army Corps of Engineers. 2007. Department of the Army Individual Permit Number NWS-2007-1926 SOD.
5. [USACE] US Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0), Wakeley JS, Lichvar RW, Noble CV, editors. Vicksburg (MS): US Army Engineer Research and Development Center. ERDC/EL TR-10-3. Available at: http://www.usace.army.mil/Portals/2/docs/civilworks/regulatory/reg_supp/west_mt_finalsupp.pdf
6. [WSDOT] Washington State Department of Transportation. 2005. Wetland and Stream Mitigation Plan SR 202 Improvement Project: SR 520 to Sahalee Way NE. Seattle (WA): Washington State Department of Transportation, Northwest Region.
7. [WSDOT] Washington State Department of Transportation. 2008a. SR 202 SR 520 to Sahalee Way Stage 2 Wetland Mitigation Site #2 As-Built Planting Plan.
8. [WSDOT] Washington State Department of Transportation. 2008b. WSDOT Wetland Mitigation Site Monitoring Methods. http://www.wsdot.wa.gov/NR/rdonlyres/C211AB59-D5A2-4AA2-8A76-3D9A77E01203/0/MethodsWhitePaper052004.pdf