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Home My WebLink AboutWetland Report - PLN General - 11/10/2020 RE C EIV E D Wetland Report 61 NOV 10 2010 S Parcel# 32232-50-94008 V! Alder Street 300 E Dalby Rd Union, WA 98592 Mason County PLANMNG Report prepared for: Rick Buechel - President Hood Canal Communications PO Box 249 Union, WA 98592 Prepared by: Rob Nagel 680 E Philura Ln Shelton, WA 98584 arctosaerial@gmail.com (425) 344-9315 .. ... ARCTOS AERIAL Environmental Consultation I Drone Imagery Project: 2020-W R-204 October 2020 ARMS Project: 2020-WR-204 October 2020 AERIAL Table of Contents overview................................................................................................................1 PropertyDescription..............................................................................................1 Wetland Delineation & Rating ...............................................................................2 References..............................................................................................................5 Appendix A: Data Forms & Maps...........................................................................6 List of Figures Figure 1: Vicinity map of project............................................................................2 Figure 2: Map of category IV wetland boundary in relation to parcel ..................3 Figure 3: Screen capture of county buffers for Category II wetlands ....................4 Figure 4: Map of State Listed 303d waters in the project area............................14 Figure 5: Screen capture of State Listed 303d waters in the project area ...........14 Figure 6: Screen capture of the State map of TMDLs for WRIA 14 ......................15 Figure 7: Map of 1km polygon around project area ...........................................16 Figure 8: Map showing the hydro periods within the wetland ...........................17 Figure 9: Map of different Cowardin Plant Classes within the wetland .............18 List of Tables Table 1: Summary of wetland scores based on functions .....................................4 i ARMS Project: 2020-WR-204 October 2020 AERIAL Wetland Report 32232-50-94008 300 E Dalby Rd Union, WA 98592 Overview This report details the wetland delineation and rating of a Category III wetland located adjacent to the above referenced property in Mason County, Washington. The wetland is the headwaters of a short tributary to Big Bend Creek, and the edge was delineated and marked in the field with pink flagging where it exists/affects the subject property. All associated buffers and set-backs should be measured horizontally, off of the flagged edge in the field. Property Description The parcel is 1.43 acres in size and located in the SW% of the SW% of section 33, Township 22 North, Range 3 West. The main office and existing warehouses of Hood Canal Communications are located on the above named parcel. The wetland borders and extends into the adjacent parcel to the east, where primary and secondary storm-water retention ponds are located. The upland site is characterized by both young and mature Douglas-fir (Pseudotsuga menziesii), sword fern (Polystichum munitum), and salal (Gaultheria shallon). Invasive species that occur on the site include Himalayan blackberry. The wetland site is characterized by red alder (Alnus rubra), Western Red Cedar (Thuja plicata), Pacific water parsley (Oenanthe sarmentosa), creeping buttercup (Ranunculus repens), and cat-tail (Typha spp.) 1 ' Project: 2020-WR-204 October 2020 ARMS 13 Lo NO" C - i ® Mrf WFM PRIRIf - - Figure 1:Vicinity map of project Wetland Delineation & Rating The wetland was delineated using the 1987 U.S. Army Corps of Engineers Wetland Delineation Manual (using updated plant and soil designations from NRCS). The wetland met all three required indicators of hydrophytic vegetation, hydric soils, and hydrology. The hydrophytic vegetation findings were based on the Rapid Test for Hydrophytic Vegetation. The hydrology findings were based on indicator Al (Surface Water). The hydric soils findings were assumed based on combined vegetation and hydrology findings. This wetland was previously delineated and rated in 2010 as a Category II estuarine wetland based on special characteristics using the 2004 Washington State Wetland Rating System. However, we rated the wetland as a category III wetland based on Functions with a total score of 18, and a Habitat Function score of 7 using the 2014 revised Washington State Department of Ecology Wetland Rating System (see appendix A for rating forms). This wetland met the Depressional hydrogeomorphic (HGM) class characteristics and was rated using the Depressional wetland forms for hydrologic and water quality functions, as well as the habitat form used for all HGM classes. 2 Project: 2020-WR-204 October 2020 ARMS The 2010 report on this wetland stated that there was no hydrologic change between the wetland and the Hood Canal. However, we observed a small beaver dam impounding water at the base of the wetland, and 200ft of stream channel to its confluence with Big Bend Creek. The average bank-full width is 2ft, and the average stream gradient is 4%. Based on these findings, the water levels in the wetland are controlled by precipitation and ground water with no tidal influence, and therefore the wetland can not be rated as an estuarine wetland and must be rated based on functions. r 4p �. -r s � t i x f t y n 1 r, 1 ♦1� y _ ' r.,♦R..♦�� '�i ,pro. �' Figure 2:Map of category 111 wetland boundary in relation to Hood Canal and Property Boundaries. The solid yellow line is the 150ft wetland buffer,and the yellow dotted line is the 165ft wetland structure setback. 3 ARMS ,Project: 2020-WR-204 October 2020 AERIAL Function Improving Hydrologic Habitat Water Quality Site potential H M L H M L H M L Landscape H M L H M L H M L Potential Value H M L H M L H M L Total Score Based on 7 4 7 18 Ratings Table 1:Summary of wetland scores based on functions. Iable 8.52.11OfD):N idth of Buffers Required to Protect(atceors III N el lands. \1 et land,So,iin2 Bet"ccn 16 and 19 Purtu,un the Wetlands Rat Rat i ng Svstem Wetland('haracteristics Buffer N idths bs Im acts of Pro used Land Use Moderate le\el of function fur habitat Iscure for Low-75 ft habitat -7 Ixmlls) Moderate—110 ti Ili —I50 ft Score I'm habitat+-a INiuus Low-40 ft Moderate—60 It Hi —80ft RESOURCE ORDINANCE October 02,2017 pg.42 Figure 3:Screen capture of wetland buffers table for Category 111 wetlands(Mason County Resource Ordinance). 4 ARMS Project: 2020-W R-204 October 2020 A E R I A L References Environmental Laboratory. (1987). "Corps of Engineers Wetlands Delineation Manual,"Technical Report Y-87-1, U.S.Army Engineer Waterways Experiment Station,Vicksburg, Miss. Guard,J. (1995).Wetland Plants of Oregon &Washington. Lone Pine Publishing. 240 pp. Edmonton, Alberta, Canada. Hruby,T. (2014).Washington State Wetland Rating System for Western Washington:2014 Update. (Publication#14-06-029). Olympia,WA:Washington Department of Ecology. Munsell Color(Firm). (2009). Munsell soil color charts :with genuine Munsell color chips. Grand Rapids, MI Pojar,J. and A. MacKinnon. 1994. Plants of the Pacific Northwest Coast (Revised Edition 2014). Lone Pine Publishing. 528 pp.Vancouver, British Columbia,Canada. United States Department of Agriculture, Natural Resources Conservation Service. 2010. Field Indicators of Hydric Soils in the United States,Version 7.0. L.M.Vasilas, G.W. Hurt, and C.V. Noble (eds.). USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils. U.S.Army Corps of Engineers 2018. National Wetland Plant List,version 3.4, http://wetland- plants.usace.army.mil/U.S.Army Corps of Engineers, Engineer Research and Development Center Cold Regions Research and Engineering Laboratory,Hanover, NH U.S.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.J.S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-3.Vicksburg, MS: U.S.Army Engineer Research and Development Center. Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 292pp. 5 ARMS Project: 2020-WR-204 October 2020 AERIAL Appendix A: Data Forms & Maps r Wetland name or number_- RATING SUMMARY — Western Washington Name of wetland(or ID#): P —( 1 K V W T t I+U Date of site visit: 1�/ I Rated by R08 UAUL- Trained by Ecology?_Yes No Date of training HGM Class used for rating 0r-P9E5S10AL Wetland has multiple HGM classes?_Y-�LN NOTE: Form is not complete without the figures requested(figures can be combined). Source of base aerial photo/map 10/(/- - I OVERALL WETLAND CATEGORY RI (based on functions or special characteristics—) 1. Category of wetland based on FUNCTIONS Category I-Total score=23-27 Score for each Category II-Total score =20-22 function based Category 111-Total score =16-19 on atings e Category IV-Total score=9-1S (order of ratings is not FUNCTION Improving Hydrologic Habitat 1 important) Water Quality I I 9=N,H,H Circle the appropriate ratings g=H,H,M Site Potential H L H L H L 7=H,H,L Landscape Potential H L H M LQ H & L 7=H,M,M Value M L H M M L TOTAL 6=H,M,L 6=M,M,M ore Based on ] 5=H,L,L Ratings / l 9 -- 5=M,M,L 4=M,L,L 3=L,L,L 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I 11 Wetland of High Conservation Value I Bog 1 Mature Forest I Old Growth Forest 1 Coastal Lagoon 1 II Interdunal I 11 III IV None of the above Wetland Rating Systern for Western WA:2014 Update I Rating Form-Effective January 1,2015 6 ARCTOS Project: 2020-WR-204 October 2020 AERIAL Wetland name or number Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure 0 Cowardin plant classes _ D 1.3,H 1.1,H 1.4 Hydroperiods D 1.4,H 1.2 Location of outlet(can be added to mop of hydroperiods) D 1.1,D 4.1 Boundary of area within 150 ft of the wetland(can be added to onother figure) D 2.2,D 5.2 _ d Map of the contributing basin D 4.3,D 5.3 d 1 km Polygon:Area that extends 1 km from entire wetland edge-including H 2.1,H 2.2,H 2.3 7 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d)listed waters in basin(from Ecology website) D 3.1,D 3.2 Screen capture of list of TMDIs for WRIA in which unit is found(from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure M 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(con be added to onother 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 onother fi ure) 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 H 2.1,H 2.2,H 2.3 polygons for accessible habitat and undisturbed habitat 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 g 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(con be odded to another figure) L 2.2 1 km Polygon:Area that extends 1 km from entire wetland edge-including H 2.1,H 2.2,H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d)listed waters in basin(from Ecologywebsite) 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 g 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 S 4.1 (con be added to figure above) _ 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 H 2.1,H 2.2,H 2.3 polygons for accessible habitat and undisturbed habitat 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 Rating System for Western WA:2014 Update Z Rating Form-Effective January 1,2015 7 Project: 2020-WR-204 October 2020 ARMS Wetland name or number 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 B. 1. Are the water levels in the entire unit usually controlled by tides except during floods? NO-go t. 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 Ifyour 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 ifyouP et and 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). Lacustrine YES-The wetland class is Lake Frin a Fringe)hNO-goto4 g ( g ) 4. Does the entire wetland unit meet all of the following criteria? The wetland is on a slope(slope can be verygraduao, 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). S. 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 Rating System for Western WA:2014 Update 3 Rating Form-Effective January 1,201 S 8 ARMS Project: 2020-WR-204 October 2020 AERIAL Wetland name or number NO-go to 66 YES-The wetland class is Riverine ?'£-�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 sometime 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 HGM class to being rated use in rating Slope+Riverine Riverine Slope+Depressional Depressional Slope+Lake Fringe Lake Fringe Depressional+Riverine along stream Depressional within boundary of depression Depressional+Lake Fringe Depressional Riverine+Lake Fringe Riverine Salt Water Tidal Fringe and any other Treat as class of freshwater wetland 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 Rating System for Western WA:2014 Update 4 Rating Form-Effective January 1,2015 9 Project: 2020-W R-204 October 2020 ARMS I p I AL Wetland name or number 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 D 1.2.The soil 2 in below the surface for duff laver)is true clay or true organic(use NRCS definitions).Yes=4 No=0 D 1.3.Characteristics and distribution of persistent plants(Emergent,Scrub-shrub,and/or Forested Cowardin classes): Weiland has persistent,ungrazed,plants>95%of area points=5 Wetland has persistent,ungrazed,plants>% of area points=3 Wetland has persistent,ungrazed plants>'/,,,of area points=1 Wetland has persistent,ungrazed plants<'/,,,of area points=0 D 1.4.Characteristics of seasonal ponding or inundation: This is the area that is ponded for or least 2 months.See description in manual. Area seasonally ponded is>%total area of wetland points=4 Area seasonally ponded is>Z total area of wetland points=2 -- Area seasonally ponded is<%total area of wetland points=0 Total for D 1 Add the points in the boxes above Rating of Site Potential If score is:_12-16=H _6-11=M _0-5=L Record the rating on the first page D 2.0.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 D 2.2.Is>10%of the area within 150 ft of the wetland in land uses that generate pollutants? Yes=1 No=O 0 2.3.Are there septic systems within 250 ft of the wetland? Yes=1 No=0 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 Total for D 2 Add the points in the boxes above Rating of Landscape Potential If score is:_3 or 4=H �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 rni)to a stream,river,lake,or marine water that is on the 303(d)list? Yes=1 No=0 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 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 L Total for D 3 Add the points in the boxes above f Rating of Value if score is: =H _1=M _0=L Record the rating on the first page Wetland Rating System for Western WA:2014 Update 5 Rating Form-Effective January 1,2015 10 Project: 2020-WR-204 October 2020 ARMS (A Wetland name or number 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 Ino outlet) points=4 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoints=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 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 it 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 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 wetlond to the area of the wetland unit itself. i 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 Total for D 4 Add the points in the boxes above Rating of Site Potential If score is_12-16=Hy6-11=M _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 D 5.2.Is >10%of the area within 150 It of the wetland in land uses that generate excess runoff? Yes=1 No=O D 5.3.Is more than 25%of the contributing basin of the wetland covered with intensive human land uses(residential at >3 residence/ac,urban,commercial,agriculture,etc.)? Yes=1 No=0 Total for D 5 Add the points in the boxes above Rating of Landscape Potential If score is:_3=H _1 or 2=M , O=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 motrhes 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 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=O Total for D 6 Add the points in the boxes above Rating of Value If score is:_2-4=H _3=M JL-0-L Record the rating on the first page Wetland Rating System for Western WA:2014 Update 6 Rating Form-Effective January 1,201 S 11 Project: 2020-WR-204 October 2020 ARMS p I `L Wetland name or number 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 X oc or more than 10%of the unit if it is smaller than 2.5 or.Add the number of structures checked. _Aquatic bed 4 structures or more:points=4 _Emergent 3 structures:points=2 1 —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,cherk if: JLThe Forested class has 3 out of S strata(canopy,sub-canopy,shrubs,herbaceous,moss/ground-cover) that each cover 20%within the Forested polygon 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 A ac to count(see text for descriptions of hydroperiods). _Permanently flooded or inundated 4 or more types present:points=3 Seasonally flooded or inundated 3 types present:points=2 Occasionally flooded or inundated 2 types present:points=1 I __Saturated only 1 type present:points=0 _ 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 H 1.3.Richness of plant species Count the number of plant species in the wetland that cover at least 10 ft'. Different patches of the some species can be combined to meet the size threshold and you do not have to name the species Do not include Eurasian milfoll,reed conarygross,purple loosestrife,Canadian thistle If you counted:>19 species points=2 5-19 species points=1 <5 species points=0 H 1.4.Interspersion of habitats Deride 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. CD (*) (F) None=0 points low=I point Moderate=2 points All three diagrams in this row are HIGH=3points Wetland Rating System for Western WA:2014 Update 13 Rating Form-Effective January 1,2015 12 ARMS Project: 2020-WR-204 October 2020 A r p I `L r Wetland name or number H I.S.Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. LLarge,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 It(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 hove not yet weathered where wood is exposed) At least Y.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) Invasive plants cover less than 25%of the wetland area in every stratum of plants(see H 1.1 for list of strata) Total for H 1 Add the points in the boxes above Rating of Site Potential If score is:_35-18=H _7-14=M 0-6=L Record the rating on the first page H 2.0.Does the landscape have the potential to support the habitat functions of the site? H 2.1.Accessible habitat(include only habitat that directly abuts wetland unit) Calculate %undisturbed habitat-_-+((%moderate and low intensity land uses)/21_ If total accessible habitat is: >'/3(33.3%)of 1 km Polygon points=3 20-33%of 1 km Polygon points=2 10-19%of 1 km Polygon points=1 <10%of 1 km Polygon points=0 H 2.2,Undisturbed habitat in 1 km Polygon around the wetland. Calculate: %undisturbed habitat_+l(%moderate and low intensity land uses)/21__ % 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 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 Total for H 2 Add the points in the boxes above Rating of Landscape Potential If score is:-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 1- 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 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---L— Rating of Value If score is:,i--2=H _1=M _0=L Record the rating on the first page Welland Rating System for Western WA:2014 Update 14 Rating Form-Effective January 1,2015 13 A RCTOS Project: 2020-WR-204 October 2020 A I p I A L •,eexew,o..s.e•..x,.,� _ ;OLj 40•�f� •'� � mow] y caw�txx •'/ t,� / / �- C� , ■rr L2 Cr..cnN c� , Erb Io aYM.. Figure 4:Screen capture of State Listed 303d waters in the project area. E� Search Results-1 Matched Listings .5566 'itpO rW rN IG fla[ten. 5 &G Krq CPEEN rrie0/Csatltowwgn Ectl.Er Mem.hi. �Or^E'� n'•.c.no:n e¢r..m 4xx Aem Figure 5:Screen capture of State Listed 303d waters in the project basin. 14 Project: 2020-W R-204 October 2020 ARMS r p(A S fff, O C_ m a. : / r 0c �.r -rVY�w�twy�r• /. tw..rr warn .W� Figure 6:Screen capture of the State map of TMDLs for WRIA 14. 15 Project: 2020-WR-204 October 2020 ARCTOSAERIAL i f //// / V Figure 7:Map of 1km polygon around project area.The red area is considered highly disturbed habitat.The yellow area is considered moderately disturbed habitat.The green area is considered undisturbed habitat. 16 Project: 2020-WR-204 October 2020 ARMS a - ,� ...fir.. s Figure 8:Map showing the hydro periods within the wetland.Blue shading indicates permanent ponding. Yellow shading indicates seasonal inundation. The solid yellow line is a 150ft from the wetland edge,and the red arrow is the outlet of the wetland. 17 ARMS Project: 2020-WR-204 October 2020 AERIAL 2, f � l! `t A r e f 0 f'p' Figure 9:Map of different Cowardin Plant Classes within the wetland. The entire wetland unit is forested. The yellow line is 150ft from the wetland edge,and the red arrow is the outlet of the wetland. 18