Document Redmond_doc_cb72f51a2f

160TH AVENUE NE EXTENSION PROJECT— WETLAND AND STREAM ASSESSMENT Appendix A: Wetland Photos ---PAGE BREAK--- 160TH AVENUE NE EXTENSION PROJECT— WETLAND AND STREAM ASSESSMENT A-1 Photo 1A – Wetland 1A looking South Photo 1B – Wetland 1A looking North ---PAGE BREAK--- 160TH AVENUE NE EXTENSION PROJECT— WETLAND AND STREAM ASSESSMENT A-2 Photo 2A – Wetland 2A looking East Photo 2B – Wetland 2A looking West ---PAGE BREAK--- 160TH AVENUE NE EXTENSION PROJECT— WETLAND AND STREAM ASSESSMENT A-3 Photo 3A – Wetland 3A looking East Photo 3B – Wetland 3A looking West ---PAGE BREAK--- 160TH AVENUE NE EXTENSION PROJECT— WETLAND AND STREAM ASSESSMENT A-4 Photo 4A – Wetland 4A looking East Photo 4B – Wetland 4A looking West ---PAGE BREAK--- 160TH AVENUE NE EXTENSION PROJECT— WETLAND AND STREAM ASSESSMENT Appendix B: Wetland Rating Forms ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 1 of 12 WETLAND RATING FORM – WESTERN WASHINGTON Version 2 – Updated July 2006 to increase accuracy and reproducibility among users Updated Oct. 2008 with the new WDFW definitions for priority habitats Name of wetland (if known):Wetland 1A Date of site visit: 3-14-12 Rated by: Megan Karl & Hans Ehlert/CH2MHILL Trained by Ecology? Yes No Date of training: H.Ehlert,10/8/2008 SEC: 35 26N RNGE: 5E Is S/T/R in Appendix D? Yes No Map of wetland unit: Figure Estimated size >20 Acres SUMMARY OF RATING Category based on FUNCTIONS provided by wetland: I II III IV Category I = Score > 70 Score for Water Quality Functions 22 Category II = Score 51 - 69 Score for Hydrologic Functions 10 Category III = Score 30 – 50 Score for Habitat Functions 11 Category IV = Score < 30 TOTAL Score for Functions 43 Category based on SPECIAL CHARACTERISTCS of Wetland I II Does not apply Final Category (choose the “highest” category from above”) III Summary of basic information about the wetland unit. Wetland Unit has Special Characteristics Wetland HGM Class used for Rating Estuarine Depressional Natural Heritage Wetland Riverine Bog Lake-fringe Mature Forest Slope Old Growth Forest Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple HGM classes present Does the wetland being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. Check List for Wetlands that Need Additional Protection (in addition to the protection recommended for its category) YES NO SP1. Has the wetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species (T/E species)? For the purposes of this rating system, “documented” means the wetland is on the appropriate state or federal database. SP2. Has the wetland unit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system, “documented” means the wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category 1 Natural Heritage Wetlands (see p. 19 of data form). SP3. Does the wetland unit contain individuals of Priority species listed by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To complete the next part of the data sheet you will need to determine the Hydrogeomorphic Class of the wetland being rated. The hydrogeomorphic classification groups wetlands in to those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. See p. 24 for more detailed instructions on classifying wetlands. ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 2 of 12 Classification of Vegetated Wetlands for Western Washington If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides (i.e. except during floods)? NO – go to 2 YES – the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? YES – Freshwater Tidal Fringe NO – Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is a Saltwater Tidal Fringe it is rated as an Estuarine wetland. Wetlands that were call estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the term “Estuarine” wetland is kept. Please note, however, that the characteristics that define Category I and II estuarine wetlands have changed (see p. 2. The entire wetland unit is flat and precipitation is only source of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO – go to 3 YES – The wetland class is Flats If your wetland can be classified as a “Flats” wetland, use the form for Depressional wetlands. 3. Does the entire wetland meet both of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) where at least 20 acres (8ha) in size; At least 30% of the open water area is deeper than 6.6 (2 NO – go to 4 YES – The wetland class is Lake-fringe (Lacustrine Fringe) 4. Does the entire wetland meet all of the following criteria? The wetland is on a slope (slope can be very gradual). The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these types of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 foot deep). NO – go to 5 YES – The wetland class is Slope 5. Does the entire wetland 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 two years. NOTE: The riverine unit can contain depressions that are filled with water when the river is not flooding.. NO – go to 6 YES – The wetland class is Riverine 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time of 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 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 your wetland. 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 class listed in column 2 is less than 10% of the unit, classify the wetland using the class that represents more than 90% of the total area. HGM Classes within the wetland unit being rated HGM Class to Use in Rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake-fringe Lake-fringe Depressional + Riverine along stream within boundary Depressional Depressional + Lake-fringe Depressional Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE under wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 3 of 12 D Depressional and Flat Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) D 1 Does the wetland have the potential to improve water quality? (see p.38) D 1.1 Characteristics of surface water flows out of the wetland:  Unit is a depression with no surface water leaving it (no outlet) points = 3  Unit has an intermittently flowing, OR highly constricted, permanently flowing outlet points = 2  Unit has an unconstricted, or constricted, surface outlet (permanently flowing) points = 1  Unit is a “flat” depression (Q.7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as “intermittently flowing”) Provide photo or drawing Figure 2 D 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS definitions) YES points = 4 NO points = 0 0 D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or forest Cowardin class):  Wetland has persistent, ungrazed vegetation > = 95% of area points = 5  Wetland has persistent, ungrazed vegetation > = 1/2 of area points = 3  Wetland has persistent, ungrazed vegetation > = 1/10 of area points = 1  Wetland has persistent, ungrazed vegetation < 1/10 of area points = 0 Map of Cowardin vegetation classes Figure 5 D 1.4 Characteristics of seasonal ponding or inundation: This is the area of the wetland that is ponded for at least 2 months, but dries out sometime during the year. Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 years.  Area seasonally ponded is > 1/2 total area of wetland points = 4  Area seasonally ponded is > 1/4 total area of wetland points = 2  Area seasonally ponded is < 1/4 total area of wetland points = 0 Map of Hydroperiods Figure 4 Total for D 1 Add the points in the boxes above 11 D 2 Does the wetland have the opportunity to improve water quality? (see p. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential, urban areas, golf courses are within 150 ft. of wetland Wetland is fed by groundwater high in phosphorus or nitrogen Other YES multiplier is 2 NO multiplier is 1 Multiplier 2  TOTAL – Water Quality Functions Multiply the score from D1 by D2; then add score to table on p. 1 22 HYDROLOGIC FUNCTIONS – Indicators that wetland unit functions to reduce flooding and stream degradation. D 3 Does the wetland have the potential to reduce flooding and erosion? (see p.46) D 3.1 Characteristics of surface water flows out of the wetland unit  Unit is a depression with no surface water leaving it (no outlet) points = 4  Unit has an intermittently flowing, OR highly constricted permanently flowing outlet points = 2  Unit is a “flat” depression (Q.7 on key) or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as “intermittently flowing”)  Unit has an unconstricted, or constricted, surface outlet (permanently flowing) points = 0 2 D 3.2 Depth of storage during wet periods. Estimate the height of ponding above the bottom of the outlet. For units with no outlet measure from the surface of permanent water or deepest part (if dry).  Marks of ponding are 3 ft. or more above the surface or bottom of the outlet points = 7  The wetland is a “headwater” wetland points = 5  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  Wetland is flat (yes to Q.2 or Q.7 on key) but has small depressions on the surface that trap water . points = 1  Marks of ponding less than 0.5 ft points = 0 0 D 3.3 Contribution of wetland unit to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself.  The area of the basin is less than 10 times the area of 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 unit is in the FLATS class points = 5 3 Total for D 3 Add the points in the boxes above 5 ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 4 of 12 D 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. Wetland is in a headwater of a river or stream that has flooding problems. Wetland drains to a river or stream that has flooding problems Wetland has no outlet and impounds surface runoff water that might otherwise flow into a river or stream that has flooding problems Other YES multiplier is 2 NO multiplier is 1 Multiplier 2  TOTAL – Hydrologic Functions Multiply the score from D3 by D4; then add score to table on p. 1 10 Comments: The wetland was sloped but mostly in a depression. Most of the depression was inundated between 0-6 inches at the time of the survey. The natural drainage has been modified with culverts and infiltration pit. Wetland 1A drains through a culvert under the Sammamish River Trail to the Sammammish River, which in turn drains to Lake Washington. None of these waterbodies really flood because of the way Lake Washington is managed to be low during winter. ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 5 of 12 R Riverine and Freshwater Tidal Fringe Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) R 1 Does the wetland have the potential to improve water quality? (see p.52) R 1.1 Area of surface depressions within the riverine wetland that can trap sediments during a flooding event:  Depressions cover > 3/4 area of wetland points = 8  Depressions cover > 1/2 area of wetland points = 4 (If depressions > 1/2 of area of unit draw polygons on aerial photo or map)  Depressions present but cover < 1/2 area of wetland. points = 2  No depressions present points = 0 Figure R 1.2 Characteristics of the vegetation in the unit (areas with >90% cover at person height):  Trees or shrubs > 2/3 area of the unit points = 8  Trees or shrubs > 1/3 area of the wetland points = 6  Ungrazed, herbaceous plants > 2/3 area of unit points = 6  Ungrazed herbaceous plants > 1/3 area of unit points = 3  Trees, shrubs, and ungrazed herbaceous < 1/3 area of unit points = 0 Aerial photo or map showing polygons of different vegetation types Figure Add the points in the boxes above R 2 Does the wetland have the opportunity to improve water quality? (see p. 53) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential, urban areas, golf courses are within 150 ft. of wetland The river or stream linked to the wetland has a contributing basin where human activities have raised levels of sediment, toxic compounds or nutrients in the river water above standards for water quality. Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from R1 by R2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce flooding and stream erosion. R 3 Does the wetland have the potential to reduce flooding and erosion? (see p.54) R 3.1 Characteristics of the overbank storage the wetland provides: Estimate the average width of the wetland perpendicular to the direction of the flow and the width of the stream or river channel (distance between banks). Calculate the ratio: (average width of unit) / (average width of stream between banks).  If the ratio is more than 20 points = 9  If the ratio is between 10 – 20 points = 6  If the ratio is 5- <10 points = 4  If the ratio is 1- <5 points = 2  If the ratio is < 1 points = 1 Aerial photo or map showing average widths Figure R 3.2 Characteristics of vegetation that slow down water velocities during floods: Treat large woody debris as “forest or shrub”. Choose the points appropriate for the best description. (polygons need to have >90% cover at person height NOT Cowardin classes):  Forest or shrub for > 1/3 area OR herbaceous plants > 2/3 area points = 7  Forest or shrub for > 1/10 area OR herbaceous plants > 1/3 area points = 4  Vegetation does not meet above criteria points = 0 Aerial photo or map showing polygons of different vegetation types Figure Add the points in the boxes above R 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p.57) Answer YES if the wetland is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows. Note which of the following conditions apply. There are human structures and activities (roads, buildings, bridges, farms) that can be damaged by flooding. There are natural resources (e.g. salmon redds) that can be damaged by flooding Other (Answer NO if the major source of water to the wetland is controlled by a reservoir or the wetland is tidal fringe along the sides of a dike) YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from R3 by R4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 6 of 12 L Lake-fringe Wetlands Points WATER QUALITY FUNCTIONS – Indicators that the wetland unit functions to improve water quality. (only 1 score per box) L 1 Does the wetland unit have the potential to improve water quality? (see p.59) L 1.1 Average width of vegetation along the lakeshore (use polygons of Cowardin classes):  Vegetation is more than 33 ft. (10m) wide points = 6  Vegetation is more than 16 ft.(5m) wide and < 33 ft points = 3  Vegetation is more than 6 ft. (2m) wide and < 16 ft points = 1  Vegetation is less than 6 ft. points = 0 Map of Cowardin classes with widths marked Figure L 1.2 Characteristics of the vegetation in the wetland: Choose the appropriate description that results in the highest points, and do not include any open water in your estimate of coverage. The herbaceous plants can be either the dominant form or as an understory in a shrub or forest community. These are not Cowardin classes. Area of Cover is total cover in the unit, but it can be in patches. NOTE: Herbaceous does not include aquatic bed.  Cover of herbaceous plants is > 90% of the vegetated area points = 6  Cover of herbaceous plants is > 2/3 of the vegetated area points = 4  Cover of herbaceous plants is > 1/3 of the vegetated area points = 3  Other vegetation that is not aquatic bed or herbaceous covers > 2/3 of the unit points = 3  Other vegetation that is not aquatic bed in > 1/3 vegetated area points = 1  Aquatic bed cover and open water > 2/3 of the unit points = 0 Map with polygons of different vegetation types Figure Add the points in the boxes above L 2 Does the wetland have the opportunity to improve water quality? (see p.61) Answer YES if you know or believe there are pollutants in the lake water, or polluted surface water flowing through the unit to the lake. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Wetland is along the shores of a lake or reservoir that does not meet water quality standards Grazing in the wetland or within 150 ft Polluted water discharges to wetland along upland edge Tilled fields or orchards within 150 ft. of wetland Residential or urban areas are within 150 ft. of wetland Parks with grassy areas that are maintained, ballfields, golf courses (all within 150 ft. of lake shore) Power boats with gasoline or diesel engines use the lake Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from L1 by L2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce shoreline erosion. L 3 Does the wetland have the potential to reduce shoreline erosion? (see p.62) L 3 Average width and characteristics of vegetation along the lakeshore (do not include aquatic bed): (choose the highest scoring description that matches conditions in the wetland)  3/4 of distance is shrubs or forest at least 33 ft. (10m) wide points = 6  3/4 of distance is shrubs or forest at least 6 ft. (2m) wide. points = 4  1/4 of distance is shrubs or forest at least 33 ft. (10m) wide. points = 4  Vegetation is at least 6 ft. (2m) wide (any type except aquatic bed) points = 2  Vegetation is less than 6 ft. (2m) wide (any type except aquatic bed) points = 0 Aerial photo or map with Cowardin vegetation classes Figure Record the points in the boxes above L 4 Does the wetland have the opportunity to reduce erosion? (see p. 64) Are there features along the shore that will be impacted if the shoreline erodes? Note which of the following conditions apply. There are human structures and activities along the upland edge of the wetland (buildings, fields) that can be damaged by erosion. There are undisturbed natural resources along the upland edge of the wetland (e.g. mature forests, other wetlands) that can be damaged by shoreline erosion. Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from L3 by L4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 7 of 12 S Slope Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) (see p.64) S 1 Does the wetland have the potential to improve water quality? S 1.1 Characteristics of average slope of unit:  Slope is 1% or less (a 1% slope has a 1 ft. vertical drop in elevation for every 100 ft. horizontal distance) points = 3  Slope is 1% - 2% points = 2  Slope is 2% - points = 1  Slope is greater than 5% points = 0 S 1.2 The soil 2 inches below the surface (or duff layer) is clay, organic (Use NRCS definitions). YES = 3 points NO = 0 points S 1.3 Characteristics of the vegetation in the wetland that trap sediments and pollutants: Choose the points appropriate for the description that best fits the vegetation in the wetland. Dense vegetation means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or mowed and plants are higher than 6 inches.  Dense, uncut, herbaceous vegetation > 90% of the wetland area points = 6  Dense, uncut, herbaceous vegetation > 1/2 of area points = 3  Dense, woody, vegetation > 1/2 of area. points = 2  Dense, uncut, herbaceous vegetation > 1/4 of area points = 1  Does not meet any of the criteria above for vegetation points = 0 Aerial photo or map with vegetation polygons Figure Total for S 1 Add the points in the boxes above S 2 Does the wetland have the opportunity to improve water quality? (see p. 67) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields, logging, or orchards within 150 ft. of wetland Residential, urban areas, or golf courses are within 150 ft. upslope of wetland Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from S1 by S2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce flooding and stream erosion. S 3 Does the wetland have the potential to reduce flooding and stream erosion? (see p.68) S 3.1 Characteristics of vegetation that reduce the velocity of surface flows during storms: Choose the points appropriate for the description that best fits conditions in the wetland (stems of plants should be thick enough (usually > 1/8in), or dense enough to remain erect during surface flows).  Dense, uncut, rigid vegetation covers > 90% of the area of the wetland points = 6  Dense, uncut, rigid vegetation> 1/2 area of points = 3  Dense, uncut, rigid vegetation > 1/4 area. points = 1  More than 1/4 of area is grazed, mowed, tilled, or vegetation is not rigid points = 0 S 3.2 Characteristics of slope wetland that holds back small amounts of flood flows. The slope has small surface depressions that can retain water over at least 10% of its area. YES = 2 points NO = 0 points 0 Add the points in the boxes above S 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p. 70) Is the wetland in a landscape position where the reduction in water velocity it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows? Note which of the following conditions apply. Wetland has surface runoff that drains to a river or stream that has flooding problems Other (Answer NO if the major source of water is controlled by a reservoir (e.g. wetland is a seep that is on the side of a dam) YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from S3 by S4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 8 of 12 These questions apply to wetlands of all HGM classes. Points HABITAT FUNCTIONS – Indicators that wetland functions to provide important habitat. (only 1 score per box) H 1 Does the wetland have the potential to provide habitat for many species? H 1.1 Vegetation structure (see P. 72): Check the types of vegetation classes present (as defined by Cowardin) – Size threshold for each class is 1/4 acre or more than 10% of the area if unit is smaller than 2.5 acres. Aquatic Bed Emergent plants Scrub/shrub (areas where shrubs have > 30% cover) Forested (areas where trees have > 30% cover) If the unit has a forested class check if: The forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the forested polygon. Add the number of vegetation types that qualify. If you have: Map of Cowardin vegetation classes 4 structures or more points = 4 3 structures points = 2 2 structures points = 1 1 structure points = 0 Figure 1 H 1.2 Hydroperiods (see p.73): Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or 1/4 acre to count (see text for descriptions of hydroperiods). Permanently flooded or inundated 4 or more types present points = 3 Seasonally flooded or inundated 3 or more types present points = 2 Occasionally flooded or inundated 2 types present points = 1 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 Map of hydroperiods Figure 2 H 1.3 Richness of Plant Species (see p. 75): Count the number of plant species in the wetland that cover at least 10 ft2 (different patches of the same species can be combined to meet the size threshold) You do not have to name the species. Do not include Eurasian Milfoil, reed canarygrass, purple loosestrife, Canadian Thistle. If you counted: > 19 species points = 2 5 – 19 species points = 1 List species below if you want to: < 5 species points = 0 1 H 1.4 Interspersion of Habitats (see p. 76): Decided from the diagrams below whether interspersion between Cowardin vegetation (described in H1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, medium, low, or none. Note: If you have 4 or more classes or 3 vegetation classes and open water, the rating is always “high”. Use map of Cowardin classes. Figure 2 H 1.5 Special Habitat Features (see p. 77): Check the habitat features that are present in the wetland. The number of checks is the number of points you put into the next column. Large, downed, woody debris within the wetland 4 in. diameter and 6 ft. long) Standing snags (diameter at the bottom > 4 inches) in the wetland Undercut banks are present for at least 6.6 ft. (2m) and/or overhanging vegetation extends at least 3.3 ft. (1m) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft. (10m) Stable steep banks of fine material that might be used by beaver or muskrat for denning 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least 1/4 acre of thin-stemmed persistent vegetation 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 each stratum of plants NOTE: The 20% stated in early printings of the manual on page 78 is an error. 0 H 1 TOTAL Score – potential for providing habitat Add the points in the column above 6 ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 9 of 12 H 2 Does the wetland have the opportunity to provide habitat for many species? (only 1 score per box) H 2.1 Buffers (see P. 80): Choose the description that best represents condition of buffer of wetland unit. The highest scoring criterion that applies to the wetland is to be used in the rating. See text for definition of “undisturbed”. 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% of circumference. No structures are within the undisturbed part of buffer (relatively undisturbed also means no grazing, no landscaping, no daily human use).. points = 5 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 50% circumference points = 4 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% circumference points = 4 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 25% circumference points = 3 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water for > 50% circumference points = 3 If buffer does not meet any of the criteria above: No paved areas (except paved trails) or buildings within 25m (80 ft) of wetland > 95% circumference. Light to moderate grazing or lawns are OK points = 2 No paved areas of buildings within 50m of wetland for > 50% circumference. Light to moderate grazing or lawns are OK points = 2 Heavy grazing in buffer points = 1 Vegetated buffers are < 2m wide (6.6 ft) for more than 95% circumference (e.g. tilled fields, paving, basalt bedrock extend to edge of wetland) points = 0 Buffer does not meet any of the criteria above points = 1 Arial photo showing buffers Figure 1 H 2.2 Corridors and Connections (see p. 81) H 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft. wide, has at least a 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size? (Dams in riparian corridors, heavily used gravel roads, paved roads, are considered breaks in the corridor). YES = 4 points (go to H 2.3) NO = go to H 2.2.2 H. 2.2.2 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 50 ft. wide, has at least 30% cover of shrubs or forest, and connects to estuaries, other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake- fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (go to H 2.3) NO = go to H 2.2.3 H. 2.2.3 Is the wetland:  Within 5 mi (8km) of a brackish or salt water estuary OR  Within 3 miles of a large field or pasture 40 acres) OR YES = 1 point  Within 1 mile of a lake greater than 20 acres? NO = 0 points 0 Comments: The wetland is adjacent to an apartment complex and is buffered by a rock wall creating the edge of the southwestern side of the wetland. ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 10 of 12 H 2.3 Near or adjacent to other priority habitats listed by WDFW (see p. 82): (see new and complete descriptions of WDFW priority habitats, and the counties in which they can be found, in the PHS report http://wdfw.wa.gov/hab/phslist.htm ) Which of the following priority habitats are within 330 ft. (100m) of the wetland unit? NOTE: the connections do not have to be relatively undisturbed. Aspen Stands: Pure or mixed stands of aspen greater than 0.4 ha (1 acre). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report p. 152). Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. Old-growth/Mature forests: (Old-growth west of Cascade crest) Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 20 trees/ha (8 trees/acre) > 81 cm (32 in) dbh or > 200 years of age. (Mature forests) Stands with average diameters exceeding 53 cm (21 in) dbh; crown cover may be less that 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80 - 200 years old west of the Cascade crest. Oregon white Oak: Woodlands Stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158). Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161). Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report: pp. 167-169 and glossary in Appendix Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. Cliffs: Greater than 7.6 m (25 ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock rubble ranging in average size 0.15 - 2.0 m (0.5 - 6.5 ft), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 51 cm (20 in) in western Washington and are > 2 m (6.5 ft) in height. Priority logs are > 30 cm (12 in) in diameter at the largest end, and > 6 m (20 ft) long. If wetland has 3 or more priority habitats = 4 points If wetland has 2 priority habitats = 3 points If wetland has 1 priority habitat = 1 point No habitats = 0 points Note: All vegetated wetlands are by definition a priority habitat but are not included in this list. Nearby wetlands are addressed in question H 2.4) 1 H 2.4 Wetland Landscape: Choose the one description of the landscape around the wetland that best fits (see p. 84)  There are at least 3 other wetlands within 1/2 mile, and the connections between them are relatively undisturbed (light grazing between wetlands OK, as is lake shore with some boating, but connections should NOT be bisected by paved roads, fill, fields, or other development points = 5  The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 5  There are at least 3 other wetlands within 1/2 mile, BUT the connections between them are disturbed. points = 3  The wetland fringe on a lake with disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 3  There is at least 1 wetland within 1/2 mile points = 2  There are no wetlands within 1/2 mile points = 0 3 H 2 TOTAL Score – opportunity for providing habitat Add the scores from H2.1, H2.2, H2.3, H2.4 5 TOTAL for H 1 from page 8 6  Total Score for Habitat Functions Add the points for H 1 and H 2; then record the result on p. 1 11 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 11 of 12 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Please determine if the wetland meets the attributes described below and circle the appropriate answers and Category. Wetland Type – Check off any criteria that apply to the wetland. Circle the Category when the appropriate criteria are met. SC1 Estuarine wetlands? (see p.86) Does the wetland unit meet the following criteria for Estuarine wetlands? The dominant water regime is tidal, Vegetated, and With a salinity greater than 0.5 ppt. YES = Go to SC 1.1 NO SC 1.1 Is the wetland unit within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? YES = Category I NO = go to SC 1.2 Cat. 1 SC 1.2 Is the wetland at least 1 acre in size and meets at least two of the following conditions? YES = Category I NO = Category II The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. If the non-native Spartina spp,. are only species that cover more than 10% of the wetland, then the wetland should be given a dual rating (I/II). The area of Spartina would be rated a Category II while the relatively undisturbed upper marsh with native species would be a Category 1. Do not, however, exclude the area of Spartina in determining the size threshold of 1 acre. At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland The wetland has at least 2 of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Cat. I Cat. II Dual Rating I/II SC2 Natural Heritage Wetlands (see p. 87) Natural Heritage wetlands have been identified by the Washington Natural Heritage Program/DNR as either high quality undisturbed wetlands or wetlands that support state Threatened, Endangered, or Sensitive plant species. SC 2.1 Is the wetland being rated in a Section/Township/Range that contains a natural heritage wetland? (This question is used to screen out most sites before you need to contact WNHP/DNR.) S/T/R information from Appendix D or accessed from WNHP/DNR web site YES Contact WNHP/DNR (see p. 79) and go to SC 2.2 NO SC 2.2 Has DNR identified the wetland as a high quality undisturbed wetland or as a site with state threatened or endangered plant species? YES = Category 1 NO not a Heritage Wetland Cat I SC3 Bogs (see p. 87) Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below to identify if the wetland is a bog. If you answer yes you will still need to rate the wetland based on its function. 1. Does the unit have organic soil horizons (i.e. layers of organic soil), either peats or mucks, that compose 16 inches or more of the first 32 inches of soil profile? (See Appendix B for a field key to identify organic soils)? YES = go to question 3 NO = go to question 2 2. Does the wetland have organic soils, either peats or mucks that are less than 16 inches deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on a lake or pond? YES = go to question 3 NO = is not a bog for purpose of rating 3. Does the unit have more than 70% cover of mosses at ground level, AND other plants, if present, consist of the “bog” species listed in Table 3 as a significant component of the vegetation (more than 30% of the total shrub and herbaceous cover consists of species in Table YES = Is a bog for purpose of rating NO = go to question 4 NOTE: If you are uncertain about the extent of mosses in the understory you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16” deep. If the pH is less than 5.0 and the “bog” plant species in Table 3 are present, the wetland is a bog. 4. Is the unit forested 30% cover) with sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Englemann’s spruce, or western white pine. WITH any of the species (or combination of species) on the bog species plant list in Table 3 as a significant component of the ground cover 30% coverage of the total shrub/herbaceous cover)? YES = Category I NO = Is not a bog for purpose of rating Cat. I ---PAGE BREAK--- Wetland name or number: Wetland 1A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 12 of 12 SC4 Forested Wetlands (see p. 90) Does the wetland have at least 1 acre of forest that meet one of these criteria for the Department of Fish and Wildlife’s forests as priority habitats? If you answer yes you will still need to rate the wetland based on its function. Old-growth forests: (west of Cascade Crest) Stands of at least two three species forming a multi- layered canopy with occasional small openings; with at least 8 trees/acre (20 trees/hectare) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 inches (81 cm or more). NOTE: The criterion for dbh is based on measurements for upland forests. Two-hundred year old trees in wetlands will often have a smaller dbh because their growth rates are often slower. The DFW criterion is and “OR” so old-growth forests do not necessarily have to have trees of this diameter. Mature forests: (west of the Cascade Crest) Stands where the largest trees are 80 – 200 years old OR have an average diameters (dbh) exceeding 21 inches (53 cm); crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth. YES = Category I NO = not a forested wetland with special characteristics Cat. I SC5 Wetlands in Coastal Lagoons (see p. 91) Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks. The lagoon in which the wetland is located contains surface water that is saline or brackish 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom.) YES = Go to SC 5.1 NO not a wetland in a coastal lagoon SC 5.1 Does the wetland meet all of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing) and has less than 20% cover of invasive plant species (see list of invasive species on p. 74). At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland. The wetland is larger than 1/10 acre (4350 square ft.) YES = Category I NO = Category II Cat. I Cat. II SC6 Interdunal Wetlands (see p. 93) Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? YES = Go to SC 6.1 NO not an interdunal wetland for rating If you answer yes you will still need to rate the wetland based on its functions. In practical terms that means the following geographic areas:  Long Beach Peninsula lands west of SR 103  Grayland-Westport lands west of SR 105  Ocean Shores-Copalis – lands west of SR 115 and SR 109 SC 6.1 Is the wetland one acre or larger, or is it in a mosaic of wetlands that is one acre or larger? YES = Category II NO = go to SC 6.2 SC 6.2 Is the wetland between 0.1 and 1 acre, or is it in a mosaic of wetlands that is between 0.1 and 1 acre? YES = Category III Cat. II Cat. III  Category of wetland based on Special Characteristics Choose the “highest” rating if wetland falls into several categories, and record on p. 1. If you answered NO for all types enter “Not Applicable” on p. 1 NO Comments: ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 1 of 12 WETLAND RATING FORM – WESTERN WASHINGTON Version 2 – Updated July 2006 to increase accuracy and reproducibility among users Updated Oct. 2008 with the new WDFW definitions for priority habitats Name of wetland (if known):Wetland 2A Date of site visit: 3-14-12 Rated by: Megan Karl & Hans Ehlert/CH2MHILL Trained by Ecology? Yes No Date of training: H.Ehlert,10/8/2008 SEC: 35 26N RNGE: 5E Is S/T/R in Appendix D? Yes No Map of wetland unit: Figure Estimated size 1/4 Acre SUMMARY OF RATING Category based on FUNCTIONS provided by wetland: I II III IV Category I = Score > 70 Score for Water Quality Functions 8 Category II = Score 51 - 69 Score for Hydrologic Functions 3 Category III = Score 30 – 50 Score for Habitat Functions 14 Category IV = Score < 30 TOTAL Score for Functions 25 Category based on SPECIAL CHARACTERISTCS of Wetland I II Does not apply Final Category (choose the “highest” category from above”) IV Summary of basic information about the wetland unit. Wetland Unit has Special Characteristics Wetland HGM Class used for Rating Estuarine Depressional Natural Heritage Wetland Riverine Bog Lake-fringe Mature Forest Slope Old Growth Forest Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple HGM classes present Does the wetland being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. Check List for Wetlands that Need Additional Protection (in addition to the protection recommended for its category) YES NO SP1. Has the wetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species (T/E species)? For the purposes of this rating system, “documented” means the wetland is on the appropriate state or federal database. SP2. Has the wetland unit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system, “documented” means the wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category 1 Natural Heritage Wetlands (see p. 19 of data form). SP3. Does the wetland unit contain individuals of Priority species listed by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To complete the next part of the data sheet you will need to determine the Hydrogeomorphic Class of the wetland being rated. The hydrogeomorphic classification groups wetlands in to those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. See p. 24 for more detailed instructions on classifying wetlands. ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 2 of 12 Classification of Vegetated Wetlands for Western Washington If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides (i.e. except during floods)? NO – go to 2 YES – the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? YES – Freshwater Tidal Fringe NO – Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is a Saltwater Tidal Fringe it is rated as an Estuarine wetland. Wetlands that were call estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the term “Estuarine” wetland is kept. Please note, however, that the characteristics that define Category I and II estuarine wetlands have changed (see p. 2. The entire wetland unit is flat and precipitation is only source of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO – go to 3 YES – The wetland class is Flats If your wetland can be classified as a “Flats” wetland, use the form for Depressional wetlands. 3. Does the entire wetland meet both of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) where at least 20 acres (8ha) in size; At least 30% of the open water area is deeper than 6.6 (2 NO – go to 4 YES – The wetland class is Lake-fringe (Lacustrine Fringe) 4. Does the entire wetland meet all of the following criteria? The wetland is on a slope (slope can be very gradual). The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these types of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 foot deep). NO – go to 5 YES – The wetland class is Slope 5. Does the entire wetland 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 two years. NOTE: The riverine unit can contain depressions that are filled with water when the river is not flooding.. NO – go to 6 YES – The wetland class is Riverine 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time of 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 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 your wetland. 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 class listed in column 2 is less than 10% of the unit, classify the wetland using the class that represents more than 90% of the total area. HGM Classes within the wetland unit being rated HGM Class to Use in Rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake-fringe Lake-fringe Depressional + Riverine along stream within boundary Depressional Depressional + Lake-fringe Depressional Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE under wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 3 of 12 D Depressional and Flat Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) D 1 Does the wetland have the potential to improve water quality? (see p.38) D 1.1 Characteristics of surface water flows out of the wetland:  Unit is a depression with no surface water leaving it (no outlet) points = 3  Unit has an intermittently flowing, OR highly constricted, permanently flowing outlet points = 2  Unit has an unconstricted, or constricted, surface outlet (permanently flowing) points = 1  Unit is a “flat” depression (Q.7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as “intermittently flowing”) Provide photo or drawing Figure D 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS definitions) YES points = 4 NO points = 0 D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or forest Cowardin class):  Wetland has persistent, ungrazed vegetation > = 95% of area points = 5  Wetland has persistent, ungrazed vegetation > = 1/2 of area points = 3  Wetland has persistent, ungrazed vegetation > = 1/10 of area points = 1  Wetland has persistent, ungrazed vegetation < 1/10 of area points = 0 Map of Cowardin vegetation classes Figure D 1.4 Characteristics of seasonal ponding or inundation: This is the area of the wetland that is ponded for at least 2 months, but dries out sometime during the year. Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 years.  Area seasonally ponded is > 1/2 total area of wetland points = 4  Area seasonally ponded is > 1/4 total area of wetland points = 2  Area seasonally ponded is < 1/4 total area of wetland points = 0 Map of Hydroperiods Figure Total for D 1 Add the points in the boxes above D 2 Does the wetland have the opportunity to improve water quality? (see p. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential, urban areas, golf courses are within 150 ft. of wetland Wetland is fed by groundwater high in phosphorus or nitrogen Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from D1 by D2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland unit functions to reduce flooding and stream degradation. D 3 Does the wetland have the potential to reduce flooding and erosion? (see p.46) D 3.1 Characteristics of surface water flows out of the wetland unit  Unit is a depression with no surface water leaving it (no outlet) points = 4  Unit has an intermittently flowing, OR highly constricted permanently flowing outlet points = 2  Unit is a “flat” depression (Q.7 on key) or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as “intermittently flowing”)  Unit has an unconstricted, or constricted, surface outlet (permanently flowing) points = 0 D 3.2 Depth of storage during wet periods. Estimate the height of ponding above the bottom of the outlet. For units with no outlet measure from the surface of permanent water or deepest part (if dry).  Marks of ponding are 3 ft. or more above the surface or bottom of the outlet points = 7  The wetland is a “headwater” wetland points = 5  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  Wetland is flat (yes to Q.2 or Q.7 on key) but has small depressions on the surface that trap water . points = 1  Marks of ponding less than 0.5 ft points = 0 D 3.3 Contribution of wetland unit to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself.  The area of the basin is less than 10 times the area of 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 unit is in the FLATS class points = 5 Total for D 3 Add the points in the boxes above ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 4 of 12 D 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. Wetland is in a headwater of a river or stream that has flooding problems. Wetland drains to a river or stream that has flooding problems Wetland has no outlet and impounds surface runoff water that might otherwise flow into a river or stream that has flooding problems Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from D3 by D4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 5 of 12 R Riverine and Freshwater Tidal Fringe Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) R 1 Does the wetland have the potential to improve water quality? (see p.52) R 1.1 Area of surface depressions within the riverine wetland that can trap sediments during a flooding event:  Depressions cover > 3/4 area of wetland points = 8  Depressions cover > 1/2 area of wetland points = 4 (If depressions > 1/2 of area of unit draw polygons on aerial photo or map)  Depressions present but cover < 1/2 area of wetland. points = 2  No depressions present points = 0 Figure R 1.2 Characteristics of the vegetation in the unit (areas with >90% cover at person height):  Trees or shrubs > 2/3 area of the unit points = 8  Trees or shrubs > 1/3 area of the wetland points = 6  Ungrazed, herbaceous plants > 2/3 area of unit points = 6  Ungrazed herbaceous plants > 1/3 area of unit points = 3  Trees, shrubs, and ungrazed herbaceous < 1/3 area of unit points = 0 Aerial photo or map showing polygons of different vegetation types Figure Add the points in the boxes above R 2 Does the wetland have the opportunity to improve water quality? (see p. 53) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential, urban areas, golf courses are within 150 ft. of wetland The river or stream linked to the wetland has a contributing basin where human activities have raised levels of sediment, toxic compounds or nutrients in the river water above standards for water quality. Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from R1 by R2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce flooding and stream erosion. R 3 Does the wetland have the potential to reduce flooding and erosion? (see p.54) R 3.1 Characteristics of the overbank storage the wetland provides: Estimate the average width of the wetland perpendicular to the direction of the flow and the width of the stream or river channel (distance between banks). Calculate the ratio: (average width of unit) / (average width of stream between banks).  If the ratio is more than 20 points = 9  If the ratio is between 10 – 20 points = 6  If the ratio is 5- <10 points = 4  If the ratio is 1- <5 points = 2  If the ratio is < 1 points = 1 Aerial photo or map showing average widths Figure R 3.2 Characteristics of vegetation that slow down water velocities during floods: Treat large woody debris as “forest or shrub”. Choose the points appropriate for the best description. (polygons need to have >90% cover at person height NOT Cowardin classes):  Forest or shrub for > 1/3 area OR herbaceous plants > 2/3 area points = 7  Forest or shrub for > 1/10 area OR herbaceous plants > 1/3 area points = 4  Vegetation does not meet above criteria points = 0 Aerial photo or map showing polygons of different vegetation types Figure Add the points in the boxes above R 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p.57) Answer YES if the wetland is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows. Note which of the following conditions apply. There are human structures and activities (roads, buildings, bridges, farms) that can be damaged by flooding. There are natural resources (e.g. salmon redds) that can be damaged by flooding Other (Answer NO if the major source of water to the wetland is controlled by a reservoir or the wetland is tidal fringe along the sides of a dike) YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from R3 by R4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 6 of 12 L Lake-fringe Wetlands Points WATER QUALITY FUNCTIONS – Indicators that the wetland unit functions to improve water quality. (only 1 score per box) L 1 Does the wetland unit have the potential to improve water quality? (see p.59) L 1.1 Average width of vegetation along the lakeshore (use polygons of Cowardin classes):  Vegetation is more than 33 ft. (10m) wide points = 6  Vegetation is more than 16 ft.(5m) wide and < 33 ft points = 3  Vegetation is more than 6 ft. (2m) wide and < 16 ft points = 1  Vegetation is less than 6 ft. points = 0 Map of Cowardin classes with widths marked Figure L 1.2 Characteristics of the vegetation in the wetland: Choose the appropriate description that results in the highest points, and do not include any open water in your estimate of coverage. The herbaceous plants can be either the dominant form or as an understory in a shrub or forest community. These are not Cowardin classes. Area of Cover is total cover in the unit, but it can be in patches. NOTE: Herbaceous does not include aquatic bed.  Cover of herbaceous plants is > 90% of the vegetated area points = 6  Cover of herbaceous plants is > 2/3 of the vegetated area points = 4  Cover of herbaceous plants is > 1/3 of the vegetated area points = 3  Other vegetation that is not aquatic bed or herbaceous covers > 2/3 of the unit points = 3  Other vegetation that is not aquatic bed in > 1/3 vegetated area points = 1  Aquatic bed cover and open water > 2/3 of the unit points = 0 Map with polygons of different vegetation types Figure Add the points in the boxes above L 2 Does the wetland have the opportunity to improve water quality? (see p.61) Answer YES if you know or believe there are pollutants in the lake water, or polluted surface water flowing through the unit to the lake. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Wetland is along the shores of a lake or reservoir that does not meet water quality standards Grazing in the wetland or within 150 ft Polluted water discharges to wetland along upland edge Tilled fields or orchards within 150 ft. of wetland Residential or urban areas are within 150 ft. of wetland Parks with grassy areas that are maintained, ballfields, golf courses (all within 150 ft. of lake shore) Power boats with gasoline or diesel engines use the lake Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from L1 by L2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce shoreline erosion. L 3 Does the wetland have the potential to reduce shoreline erosion? (see p.62) L 3 Average width and characteristics of vegetation along the lakeshore (do not include aquatic bed): (choose the highest scoring description that matches conditions in the wetland)  3/4 of distance is shrubs or forest at least 33 ft. (10m) wide points = 6  3/4 of distance is shrubs or forest at least 6 ft. (2m) wide. points = 4  1/4 of distance is shrubs or forest at least 33 ft. (10m) wide. points = 4  Vegetation is at least 6 ft. (2m) wide (any type except aquatic bed) points = 2  Vegetation is less than 6 ft. (2m) wide (any type except aquatic bed) points = 0 Aerial photo or map with Cowardin vegetation classes Figure Record the points in the boxes above L 4 Does the wetland have the opportunity to reduce erosion? (see p. 64) Are there features along the shore that will be impacted if the shoreline erodes? Note which of the following conditions apply. There are human structures and activities along the upland edge of the wetland (buildings, fields) that can be damaged by erosion. There are undisturbed natural resources along the upland edge of the wetland (e.g. mature forests, other wetlands) that can be damaged by shoreline erosion. Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from L3 by L4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 7 of 12 S Slope Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) (see p.64) S 1 Does the wetland have the potential to improve water quality? S 1.1 Characteristics of average slope of unit:  Slope is 1% or less (a 1% slope has a 1 ft. vertical drop in elevation for every 100 ft. horizontal distance) points = 3  Slope is 1% - 2% points = 2  Slope is 2% - points = 1  Slope is greater than 5% points = 0 1 S 1.2 The soil 2 inches below the surface (or duff layer) is clay, organic (Use NRCS definitions). YES = 3 points NO = 0 points 0 S 1.3 Characteristics of the vegetation in the wetland that trap sediments and pollutants: Choose the points appropriate for the description that best fits the vegetation in the wetland. Dense vegetation means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or mowed and plants are higher than 6 inches.  Dense, uncut, herbaceous vegetation > 90% of the wetland area points = 6  Dense, uncut, herbaceous vegetation > 1/2 of area points = 3  Dense, woody, vegetation > 1/2 of area. points = 2  Dense, uncut, herbaceous vegetation > 1/4 of area points = 1  Does not meet any of the criteria above for vegetation points = 0 Aerial photo or map with vegetation polygons Figure 3 Total for S 1 Add the points in the boxes above 4 S 2 Does the wetland have the opportunity to improve water quality? (see p. 67) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields, logging, or orchards within 150 ft. of wetland Residential, urban areas, or golf courses are within 150 ft. upslope of wetland Other YES multiplier is 2 NO multiplier is 1 Multiplier 2  TOTAL – Water Quality Functions Multiply the score from S1 by S2; then add score to table on p. 1 8 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce flooding and stream erosion. S 3 Does the wetland have the potential to reduce flooding and stream erosion? (see p.68) S 3.1 Characteristics of vegetation that reduce the velocity of surface flows during storms: Choose the points appropriate for the description that best fits conditions in the wetland (stems of plants should be thick enough (usually > 1/8in), or dense enough to remain erect during surface flows).  Dense, uncut, rigid vegetation covers > 90% of the area of the wetland points = 6  Dense, uncut, rigid vegetation> 1/2 area of points = 3  Dense, uncut, rigid vegetation > 1/4 area. points = 1  More than 1/4 of area is grazed, mowed, tilled, or vegetation is not rigid points = 0 3 S 3.2 Characteristics of slope wetland that holds back small amounts of flood flows. The slope has small surface depressions that can retain water over at least 10% of its area. YES = 2 points NO = 0 points 0 Add the points in the boxes above 3 S 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p. 70) Is the wetland in a landscape position where the reduction in water velocity it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows? Note which of the following conditions apply. Wetland has surface runoff that drains to a river or stream that has flooding problems Other (Answer NO if the major source of water is controlled by a reservoir (e.g. wetland is a seep that is on the side of a dam) YES multiplier is 2 NO multiplier is 1 Multiplier 1  TOTAL – Hydrologic Functions Multiply the score from S3 by S4; then add score to table on p. 1 3 Comments: Wetland 2A drains to the Valley bottom (Wetland 1A), which drains to the Sammammish Slough, which drains to Lake Washington. None of these waterbodies really flood because of the way Lake Washington is managed to be low during winter. ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 8 of 12 These questions apply to wetlands of all HGM classes. Points HABITAT FUNCTIONS – Indicators that wetland functions to provide important habitat. (only 1 score per box) H 1 Does the wetland have the potential to provide habitat for many species? H 1.1 Vegetation structure (see P. 72): Check the types of vegetation classes present (as defined by Cowardin) – Size threshold for each class is 1/4 acre or more than 10% of the area if unit is smaller than 2.5 acres. Aquatic Bed Emergent plants Scrub/shrub (areas where shrubs have > 30% cover) Forested (areas where trees have > 30% cover) If the unit has a forested class check if: The forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the forested polygon. Add the number of vegetation types that qualify. If you have: Map of Cowardin vegetation classes 4 structures or more points = 4 3 structures points = 2 2 structures points = 1 1 structure points = 0 Figure 1 H 1.2 Hydroperiods (see p.73): Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or 1/4 acre to count (see text for descriptions of hydroperiods). Permanently flooded or inundated 4 or more types present points = 3 Seasonally flooded or inundated 3 or more types present points = 2 Occasionally flooded or inundated 2 types present points = 1 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 Map of hydroperiods Figure 2 H 1.3 Richness of Plant Species (see p. 75): Count the number of plant species in the wetland that cover at least 10 ft2 (different patches of the same species can be combined to meet the size threshold) You do not have to name the species. Do not include Eurasian Milfoil, reed canarygrass, purple loosestrife, Canadian Thistle. If you counted: > 19 species points = 2 5 – 19 species points = 1 List species below if you want to: < 5 species points = 0 0 H 1.4 Interspersion of Habitats (see p. 76): Decided from the diagrams below whether interspersion between Cowardin vegetation (described in H1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, medium, low, or none. Note: If you have 4 or more classes or 3 vegetation classes and open water, the rating is always “high”. Use map of Cowardin classes. Figure 2 H 1.5 Special Habitat Features (see p. 77): Check the habitat features that are present in the wetland. The number of checks is the number of points you put into the next column. Large, downed, woody debris within the wetland 4 in. diameter and 6 ft. long) Standing snags (diameter at the bottom > 4 inches) in the wetland Undercut banks are present for at least 6.6 ft. (2m) and/or overhanging vegetation extends at least 3.3 ft. (1m) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft. (10m) Stable steep banks of fine material that might be used by beaver or muskrat for denning 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least 1/4 acre of thin-stemmed persistent vegetation 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 each stratum of plants NOTE: The 20% stated in early printings of the manual on page 78 is an error. 1 H 1 TOTAL Score – potential for providing habitat Add the points in the column above 6 ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 9 of 12 H 2 Does the wetland have the opportunity to provide habitat for many species? (only 1 score per box) H 2.1 Buffers (see P. 80): Choose the description that best represents condition of buffer of wetland unit. The highest scoring criterion that applies to the wetland is to be used in the rating. See text for definition of “undisturbed”. 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% of circumference. No structures are within the undisturbed part of buffer (relatively undisturbed also means no grazing, no landscaping, no daily human use).. points = 5 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 50% circumference points = 4 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% circumference points = 4 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 25% circumference points = 3 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water for > 50% circumference points = 3 If buffer does not meet any of the criteria above: No paved areas (except paved trails) or buildings within 25m (80 ft) of wetland > 95% circumference. Light to moderate grazing or lawns are OK points = 2 No paved areas of buildings within 50m of wetland for > 50% circumference. Light to moderate grazing or lawns are OK points = 2 Heavy grazing in buffer points = 1 Vegetated buffers are < 2m wide (6.6 ft) for more than 95% circumference (e.g. tilled fields, paving, basalt bedrock extend to edge of wetland) points = 0 Buffer does not meet any of the criteria above points = 1 Arial photo showing buffers Figure 4 H 2.2 Corridors and Connections (see p. 81) H 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft. wide, has at least a 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size? (Dams in riparian corridors, heavily used gravel roads, paved roads, are considered breaks in the corridor). YES = 4 points (go to H 2.3) NO = go to H 2.2.2 H. 2.2.2 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 50 ft. wide, has at least 30% cover of shrubs or forest, and connects to estuaries, other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake- fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (go to H 2.3) NO = go to H 2.2.3 H. 2.2.3 Is the wetland:  Within 5 mi (8km) of a brackish or salt water estuary OR  Within 3 miles of a large field or pasture 40 acres) OR YES = 1 point  Within 1 mile of a lake greater than 20 acres? NO = 0 points 0 Comments: The eastern portion of the wetland is mostly saturated and flooded between 0-3 inches. As the water flows downhill it consolidates into a defined channel and the fringing wetland is not flooded in this area. A house and a road are within 300 feet of the wetland boundary. ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 10 of 12 H 2.3 Near or adjacent to other priority habitats listed by WDFW (see p. 82): (see new and complete descriptions of WDFW priority habitats, and the counties in which they can be found, in the PHS report http://wdfw.wa.gov/hab/phslist.htm ) Which of the following priority habitats are within 330 ft. (100m) of the wetland unit? NOTE: the connections do not have to be relatively undisturbed. Aspen Stands: Pure or mixed stands of aspen greater than 0.4 ha (1 acre). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report p. 152). Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. Old-growth/Mature forests: (Old-growth west of Cascade crest) Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 20 trees/ha (8 trees/acre) > 81 cm (32 in) dbh or > 200 years of age. (Mature forests) Stands with average diameters exceeding 53 cm (21 in) dbh; crown cover may be less that 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80 - 200 years old west of the Cascade crest. Oregon white Oak: Woodlands Stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158). Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161). Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report: pp. 167-169 and glossary in Appendix Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. Cliffs: Greater than 7.6 m (25 ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock rubble ranging in average size 0.15 - 2.0 m (0.5 - 6.5 ft), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 51 cm (20 in) in western Washington and are > 2 m (6.5 ft) in height. Priority logs are > 30 cm (12 in) in diameter at the largest end, and > 6 m (20 ft) long. If wetland has 3 or more priority habitats = 4 points If wetland has 2 priority habitats = 3 points If wetland has 1 priority habitat = 1 point No habitats = 0 points Note: All vegetated wetlands are by definition a priority habitat but are not included in this list. Nearby wetlands are addressed in question H 2.4) 1 H 2.4 Wetland Landscape: Choose the one description of the landscape around the wetland that best fits (see p. 84)  There are at least 3 other wetlands within 1/2 mile, and the connections between them are relatively undisturbed (light grazing between wetlands OK, as is lake shore with some boating, but connections should NOT be bisected by paved roads, fill, fields, or other development points = 5  The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 5  There are at least 3 other wetlands within 1/2 mile, BUT the connections between them are disturbed. points = 3  The wetland fringe on a lake with disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 3  There is at least 1 wetland within 1/2 mile points = 2  There are no wetlands within 1/2 mile points = 0 3 H 2 TOTAL Score – opportunity for providing habitat Add the scores from H2.1, H2.2, H2.3, H2.4 8 TOTAL for H 1 from page 8 6  Total Score for Habitat Functions Add the points for H 1 and H 2; then record the result on p. 1 14 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 11 of 12 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Please determine if the wetland meets the attributes described below and circle the appropriate answers and Category. Wetland Type – Check off any criteria that apply to the wetland. Circle the Category when the appropriate criteria are met. SC1 Estuarine wetlands? (see p.86) Does the wetland unit meet the following criteria for Estuarine wetlands? The dominant water regime is tidal, Vegetated, and With a salinity greater than 0.5 ppt. YES = Go to SC 1.1 NO SC 1.1 Is the wetland unit within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? YES = Category I NO = go to SC 1.2 Cat. 1 SC 1.2 Is the wetland at least 1 acre in size and meets at least two of the following conditions? YES = Category I NO = Category II The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. If the non-native Spartina spp,. are only species that cover more than 10% of the wetland, then the wetland should be given a dual rating (I/II). The area of Spartina would be rated a Category II while the relatively undisturbed upper marsh with native species would be a Category 1. Do not, however, exclude the area of Spartina in determining the size threshold of 1 acre. At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland The wetland has at least 2 of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Cat. I Cat. II Dual Rating I/II SC2 Natural Heritage Wetlands (see p. 87) Natural Heritage wetlands have been identified by the Washington Natural Heritage Program/DNR as either high quality undisturbed wetlands or wetlands that support state Threatened, Endangered, or Sensitive plant species. SC 2.1 Is the wetland being rated in a Section/Township/Range that contains a natural heritage wetland? (This question is used to screen out most sites before you need to contact WNHP/DNR.) S/T/R information from Appendix D or accessed from WNHP/DNR web site YES Contact WNHP/DNR (see p. 79) and go to SC 2.2 NO SC 2.2 Has DNR identified the wetland as a high quality undisturbed wetland or as a site with state threatened or endangered plant species? YES = Category 1 NO not a Heritage Wetland Cat I SC3 Bogs (see p. 87) Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below to identify if the wetland is a bog. If you answer yes you will still need to rate the wetland based on its function. 1. Does the unit have organic soil horizons (i.e. layers of organic soil), either peats or mucks, that compose 16 inches or more of the first 32 inches of soil profile? (See Appendix B for a field key to identify organic soils)? YES = go to question 3 NO = go to question 2 2. Does the wetland have organic soils, either peats or mucks that are less than 16 inches deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on a lake or pond? YES = go to question 3 NO = is not a bog for purpose of rating 3. Does the unit have more than 70% cover of mosses at ground level, AND other plants, if present, consist of the “bog” species listed in Table 3 as a significant component of the vegetation (more than 30% of the total shrub and herbaceous cover consists of species in Table YES = Is a bog for purpose of rating NO = go to question 4 NOTE: If you are uncertain about the extent of mosses in the understory you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16” deep. If the pH is less than 5.0 and the “bog” plant species in Table 3 are present, the wetland is a bog. 4. Is the unit forested 30% cover) with sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Englemann’s spruce, or western white pine. WITH any of the species (or combination of species) on the bog species plant list in Table 3 as a significant component of the ground cover 30% coverage of the total shrub/herbaceous cover)? YES = Category I NO = Is not a bog for purpose of rating Cat. I ---PAGE BREAK--- Wetland name or number: Wetland 2A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 12 of 12 SC4 Forested Wetlands (see p. 90) Does the wetland have at least 1 acre of forest that meet one of these criteria for the Department of Fish and Wildlife’s forests as priority habitats? If you answer yes you will still need to rate the wetland based on its function. Old-growth forests: (west of Cascade Crest) Stands of at least two three species forming a multi- layered canopy with occasional small openings; with at least 8 trees/acre (20 trees/hectare) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 inches (81 cm or more). NOTE: The criterion for dbh is based on measurements for upland forests. Two-hundred year old trees in wetlands will often have a smaller dbh because their growth rates are often slower. The DFW criterion is and “OR” so old-growth forests do not necessarily have to have trees of this diameter. Mature forests: (west of the Cascade Crest) Stands where the largest trees are 80 – 200 years old OR have an average diameters (dbh) exceeding 21 inches (53 cm); crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth. YES = Category I NO = not a forested wetland with special characteristics Cat. I SC5 Wetlands in Coastal Lagoons (see p. 91) Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks. The lagoon in which the wetland is located contains surface water that is saline or brackish 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom.) YES = Go to SC 5.1 NO not a wetland in a coastal lagoon SC 5.1 Does the wetland meet all of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing) and has less than 20% cover of invasive plant species (see list of invasive species on p. 74). At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland. The wetland is larger than 1/10 acre (4350 square ft.) YES = Category I NO = Category II Cat. I Cat. II SC6 Interdunal Wetlands (see p. 93) Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? YES = Go to SC 6.1 NO not an interdunal wetland for rating If you answer yes you will still need to rate the wetland based on its functions. In practical terms that means the following geographic areas:  Long Beach Peninsula lands west of SR 103  Grayland-Westport lands west of SR 105  Ocean Shores-Copalis – lands west of SR 115 and SR 109 SC 6.1 Is the wetland one acre or larger, or is it in a mosaic of wetlands that is one acre or larger? YES = Category II NO = go to SC 6.2 SC 6.2 Is the wetland between 0.1 and 1 acre, or is it in a mosaic of wetlands that is between 0.1 and 1 acre? YES = Category III Cat. II Cat. III  Category of wetland based on Special Characteristics Choose the “highest” rating if wetland falls into several categories, and record on p. 1. If you answered NO for all types enter “Not Applicable” on p. 1 NO Comments: ---PAGE BREAK--- Renamed "Wetland 3A" by CH2MHILL 2012. (Originally delineated as "Wetland A" by ESA Adolfson in fall 2008.) ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 1 of 12 WETLAND RATING FORM – WESTERN WASHINGTON Version 2 – Updated July 2006 to increase accuracy and reproducibility among users Updated Oct. 2008 with the new WDFW definitions for priority habitats Name of wetland (if known): Wetland 4A Date of site visit: 3-14-12 Rated by: Megan Karl & Hans Ehlert/CH2MHILL Trained by Ecology? Yes No Date of training: H.Ehlert,10/8/2008 SEC: 35 26N RNGE: 5E Is S/T/R in Appendix D? Yes No Map of wetland unit: Figure Estimated size <1/4 Acre SUMMARY OF RATING Category based on FUNCTIONS provided by wetland: I II III IV Category I = Score > 70 Score for Water Quality Functions 8 Category II = Score 51 - 69 Score for Hydrologic Functions 6 Category III = Score 30 – 50 Score for Habitat Functions 19 Category IV = Score < 30 TOTAL Score for Functions 33 Category based on SPECIAL CHARACTERISTCS of Wetland I II Does not apply Final Category (choose the “highest” category from above”) III Summary of basic information about the wetland unit. Wetland Unit has Special Characteristics Wetland HGM Class used for Rating Estuarine Depressional Natural Heritage Wetland Riverine Bog Lake-fringe Mature Forest Slope Old Growth Forest Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple HGM classes present Does the wetland being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. Check List for Wetlands that Need Additional Protection (in addition to the protection recommended for its category) YES NO SP1. Has the wetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species (T/E species)? For the purposes of this rating system, “documented” means the wetland is on the appropriate state or federal database. SP2. Has the wetland unit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system, “documented” means the wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category 1 Natural Heritage Wetlands (see p. 19 of data form). SP3. Does the wetland unit contain individuals of Priority species listed by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To complete the next part of the data sheet you will need to determine the Hydrogeomorphic Class of the wetland being rated. The hydrogeomorphic classification groups wetlands in to those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. See p. 24 for more detailed instructions on classifying wetlands. ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 2 of 12 Classification of Vegetated Wetlands for Western Washington If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides (i.e. except during floods)? NO – go to 2 YES – the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? YES – Freshwater Tidal Fringe NO – Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is a Saltwater Tidal Fringe it is rated as an Estuarine wetland. Wetlands that were call estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the term “Estuarine” wetland is kept. Please note, however, that the characteristics that define Category I and II estuarine wetlands have changed (see p. 2. The entire wetland unit is flat and precipitation is only source of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO – go to 3 YES – The wetland class is Flats If your wetland can be classified as a “Flats” wetland, use the form for Depressional wetlands. 3. Does the entire wetland meet both of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) where at least 20 acres (8ha) in size; At least 30% of the open water area is deeper than 6.6 (2 NO – go to 4 YES – The wetland class is Lake-fringe (Lacustrine Fringe) 4. Does the entire wetland meet all of the following criteria? The wetland is on a slope (slope can be very gradual). The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these types of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 foot deep). NO – go to 5 YES – The wetland class is Slope 5. Does the entire wetland 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 two years. NOTE: The riverine unit can contain depressions that are filled with water when the river is not flooding.. NO – go to 6 YES – The wetland class is Riverine 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time of 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 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 your wetland. 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 class listed in column 2 is less than 10% of the unit, classify the wetland using the class that represents more than 90% of the total area. HGM Classes within the wetland unit being rated HGM Class to Use in Rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake-fringe Lake-fringe Depressional + Riverine along stream within boundary Depressional Depressional + Lake-fringe Depressional Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE under wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 3 of 12 D Depressional and Flat Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) D 1 Does the wetland have the potential to improve water quality? (see p.38) D 1.1 Characteristics of surface water flows out of the wetland:  Unit is a depression with no surface water leaving it (no outlet) points = 3  Unit has an intermittently flowing, OR highly constricted, permanently flowing outlet points = 2  Unit has an unconstricted, or constricted, surface outlet (permanently flowing) points = 1  Unit is a “flat” depression (Q.7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as “intermittently flowing”) Provide photo or drawing Figure D 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS definitions) YES points = 4 NO points = 0 D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or forest Cowardin class):  Wetland has persistent, ungrazed vegetation > = 95% of area points = 5  Wetland has persistent, ungrazed vegetation > = 1/2 of area points = 3  Wetland has persistent, ungrazed vegetation > = 1/10 of area points = 1  Wetland has persistent, ungrazed vegetation < 1/10 of area points = 0 Map of Cowardin vegetation classes Figure D 1.4 Characteristics of seasonal ponding or inundation: This is the area of the wetland that is ponded for at least 2 months, but dries out sometime during the year. Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 years.  Area seasonally ponded is > 1/2 total area of wetland points = 4  Area seasonally ponded is > 1/4 total area of wetland points = 2  Area seasonally ponded is < 1/4 total area of wetland points = 0 Map of Hydroperiods Figure Total for D 1 Add the points in the boxes above D 2 Does the wetland have the opportunity to improve water quality? (see p. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential, urban areas, golf courses are within 150 ft. of wetland Wetland is fed by groundwater high in phosphorus or nitrogen Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from D1 by D2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland unit functions to reduce flooding and stream degradation. D 3 Does the wetland have the potential to reduce flooding and erosion? (see p.46) D 3.1 Characteristics of surface water flows out of the wetland unit  Unit is a depression with no surface water leaving it (no outlet) points = 4  Unit has an intermittently flowing, OR highly constricted permanently flowing outlet points = 2  Unit is a “flat” depression (Q.7 on key) or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as “intermittently flowing”)  Unit has an unconstricted, or constricted, surface outlet (permanently flowing) points = 0 D 3.2 Depth of storage during wet periods. Estimate the height of ponding above the bottom of the outlet. For units with no outlet measure from the surface of permanent water or deepest part (if dry).  Marks of ponding are 3 ft. or more above the surface or bottom of the outlet points = 7  The wetland is a “headwater” wetland points = 5  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  Wetland is flat (yes to Q.2 or Q.7 on key) but has small depressions on the surface that trap water . points = 1  Marks of ponding less than 0.5 ft points = 0 D 3.3 Contribution of wetland unit to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself.  The area of the basin is less than 10 times the area of 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 unit is in the FLATS class points = 5 Total for D 3 Add the points in the boxes above ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 4 of 12 D 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. Wetland is in a headwater of a river or stream that has flooding problems. Wetland drains to a river or stream that has flooding problems Wetland has no outlet and impounds surface runoff water that might otherwise flow into a river or stream that has flooding problems Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from D3 by D4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 5 of 12 R Riverine and Freshwater Tidal Fringe Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) R 1 Does the wetland have the potential to improve water quality? (see p.52) R 1.1 Area of surface depressions within the riverine wetland that can trap sediments during a flooding event:  Depressions cover > 3/4 area of wetland points = 8  Depressions cover > 1/2 area of wetland points = 4 (If depressions > 1/2 of area of unit draw polygons on aerial photo or map)  Depressions present but cover < 1/2 area of wetland. points = 2  No depressions present points = 0 Figure R 1.2 Characteristics of the vegetation in the unit (areas with >90% cover at person height):  Trees or shrubs > 2/3 area of the unit points = 8  Trees or shrubs > 1/3 area of the wetland points = 6  Ungrazed, herbaceous plants > 2/3 area of unit points = 6  Ungrazed herbaceous plants > 1/3 area of unit points = 3  Trees, shrubs, and ungrazed herbaceous < 1/3 area of unit points = 0 Aerial photo or map showing polygons of different vegetation types Figure Add the points in the boxes above R 2 Does the wetland have the opportunity to improve water quality? (see p. 53) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential, urban areas, golf courses are within 150 ft. of wetland The river or stream linked to the wetland has a contributing basin where human activities have raised levels of sediment, toxic compounds or nutrients in the river water above standards for water quality. Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from R1 by R2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce flooding and stream erosion. R 3 Does the wetland have the potential to reduce flooding and erosion? (see p.54) R 3.1 Characteristics of the overbank storage the wetland provides: Estimate the average width of the wetland perpendicular to the direction of the flow and the width of the stream or river channel (distance between banks). Calculate the ratio: (average width of unit) / (average width of stream between banks).  If the ratio is more than 20 points = 9  If the ratio is between 10 – 20 points = 6  If the ratio is 5- <10 points = 4  If the ratio is 1- <5 points = 2  If the ratio is < 1 points = 1 Aerial photo or map showing average widths Figure R 3.2 Characteristics of vegetation that slow down water velocities during floods: Treat large woody debris as “forest or shrub”. Choose the points appropriate for the best description. (polygons need to have >90% cover at person height NOT Cowardin classes):  Forest or shrub for > 1/3 area OR herbaceous plants > 2/3 area points = 7  Forest or shrub for > 1/10 area OR herbaceous plants > 1/3 area points = 4  Vegetation does not meet above criteria points = 0 Aerial photo or map showing polygons of different vegetation types Figure Add the points in the boxes above R 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p.57) Answer YES if the wetland is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows. Note which of the following conditions apply. There are human structures and activities (roads, buildings, bridges, farms) that can be damaged by flooding. There are natural resources (e.g. salmon redds) that can be damaged by flooding Other (Answer NO if the major source of water to the wetland is controlled by a reservoir or the wetland is tidal fringe along the sides of a dike) YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from R3 by R4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 6 of 12 L Lake-fringe Wetlands Points WATER QUALITY FUNCTIONS – Indicators that the wetland unit functions to improve water quality. (only 1 score per box) L 1 Does the wetland unit have the potential to improve water quality? (see p.59) L 1.1 Average width of vegetation along the lakeshore (use polygons of Cowardin classes):  Vegetation is more than 33 ft. (10m) wide points = 6  Vegetation is more than 16 ft.(5m) wide and < 33 ft points = 3  Vegetation is more than 6 ft. (2m) wide and < 16 ft points = 1  Vegetation is less than 6 ft. points = 0 Map of Cowardin classes with widths marked Figure L 1.2 Characteristics of the vegetation in the wetland: Choose the appropriate description that results in the highest points, and do not include any open water in your estimate of coverage. The herbaceous plants can be either the dominant form or as an understory in a shrub or forest community. These are not Cowardin classes. Area of Cover is total cover in the unit, but it can be in patches. NOTE: Herbaceous does not include aquatic bed.  Cover of herbaceous plants is > 90% of the vegetated area points = 6  Cover of herbaceous plants is > 2/3 of the vegetated area points = 4  Cover of herbaceous plants is > 1/3 of the vegetated area points = 3  Other vegetation that is not aquatic bed or herbaceous covers > 2/3 of the unit points = 3  Other vegetation that is not aquatic bed in > 1/3 vegetated area points = 1  Aquatic bed cover and open water > 2/3 of the unit points = 0 Map with polygons of different vegetation types Figure Add the points in the boxes above L 2 Does the wetland have the opportunity to improve water quality? (see p.61) Answer YES if you know or believe there are pollutants in the lake water, or polluted surface water flowing through the unit to the lake. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Wetland is along the shores of a lake or reservoir that does not meet water quality standards Grazing in the wetland or within 150 ft Polluted water discharges to wetland along upland edge Tilled fields or orchards within 150 ft. of wetland Residential or urban areas are within 150 ft. of wetland Parks with grassy areas that are maintained, ballfields, golf courses (all within 150 ft. of lake shore) Power boats with gasoline or diesel engines use the lake Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Water Quality Functions Multiply the score from L1 by L2; then add score to table on p. 1 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce shoreline erosion. L 3 Does the wetland have the potential to reduce shoreline erosion? (see p.62) L 3 Average width and characteristics of vegetation along the lakeshore (do not include aquatic bed): (choose the highest scoring description that matches conditions in the wetland)  3/4 of distance is shrubs or forest at least 33 ft. (10m) wide points = 6  3/4 of distance is shrubs or forest at least 6 ft. (2m) wide. points = 4  1/4 of distance is shrubs or forest at least 33 ft. (10m) wide. points = 4  Vegetation is at least 6 ft. (2m) wide (any type except aquatic bed) points = 2  Vegetation is less than 6 ft. (2m) wide (any type except aquatic bed) points = 0 Aerial photo or map with Cowardin vegetation classes Figure Record the points in the boxes above L 4 Does the wetland have the opportunity to reduce erosion? (see p. 64) Are there features along the shore that will be impacted if the shoreline erodes? Note which of the following conditions apply. There are human structures and activities along the upland edge of the wetland (buildings, fields) that can be damaged by erosion. There are undisturbed natural resources along the upland edge of the wetland (e.g. mature forests, other wetlands) that can be damaged by shoreline erosion. Other YES multiplier is 2 NO multiplier is 1 Multiplier  TOTAL – Hydrologic Functions Multiply the score from L3 by L4; then add score to table on p. 1 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 7 of 12 S Slope Wetlands Points WATER QUALITY FUNCTIONS – Indicators that wetland functions to improve water quality. (only 1 score per box) (see p.64) S 1 Does the wetland have the potential to improve water quality? S 1.1 Characteristics of average slope of unit:  Slope is 1% or less (a 1% slope has a 1 ft. vertical drop in elevation for every 100 ft. horizontal distance) points = 3  Slope is 1% - 2% points = 2  Slope is 2% - points = 1  Slope is greater than 5% points = 0 2 S 1.2 The soil 2 inches below the surface (or duff layer) is clay, organic (Use NRCS definitions). YES = 3 points NO = 0 points 0 S 1.3 Characteristics of the vegetation in the wetland that trap sediments and pollutants: Choose the points appropriate for the description that best fits the vegetation in the wetland. Dense vegetation means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or mowed and plants are higher than 6 inches.  Dense, uncut, herbaceous vegetation > 90% of the wetland area points = 6  Dense, uncut, herbaceous vegetation > 1/2 of area points = 3  Dense, woody, vegetation > 1/2 of area. points = 2  Dense, uncut, herbaceous vegetation > 1/4 of area points = 1  Does not meet any of the criteria above for vegetation points = 0 Aerial photo or map with vegetation polygons Figure 2 Total for S 1 Add the points in the boxes above 4 S 2 Does the wetland have the opportunity to improve water quality? (see p. 67) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields, logging, or orchards within 150 ft. of wetland Residential, urban areas, or golf courses are within 150 ft. upslope of wetland Other YES multiplier is 2 NO multiplier is 1 Multiplier 2  TOTAL – Water Quality Functions Multiply the score from S1 by S2; then add score to table on p. 1 8 HYDROLOGIC FUNCTIONS – Indicators that wetland functions to reduce flooding and stream erosion. S 3 Does the wetland have the potential to reduce flooding and stream erosion? (see p.68) S 3.1 Characteristics of vegetation that reduce the velocity of surface flows during storms: Choose the points appropriate for the description that best fits conditions in the wetland (stems of plants should be thick enough (usually > 1/8in), or dense enough to remain erect during surface flows).  Dense, uncut, rigid vegetation covers > 90% of the area of the wetland points = 6  Dense, uncut, rigid vegetation> 1/2 area of points = 3  Dense, uncut, rigid vegetation > 1/4 area. points = 1  More than 1/4 of area is grazed, mowed, tilled, or vegetation is not rigid points = 0 3 S 3.2 Characteristics of slope wetland that holds back small amounts of flood flows. The slope has small surface depressions that can retain water over at least 10% of its area. YES = 2 points NO = 0 points 2 Add the points in the boxes above 6 S 4 Does the wetland have the opportunity to reduce flooding and erosion? (see p. 70) Is the wetland in a landscape position where the reduction in water velocity it provides helps protect property and aquatic resources from flooding or excessive and/or erosive flows? Note which of the following conditions apply. Wetland has surface runoff that drains to a river or stream that has flooding problems Other (Answer NO if the major source of water is controlled by a reservoir (e.g. wetland is a seep that is on the side of a dam) YES multiplier is 2 NO multiplier is 1 Multiplier 1  TOTAL – Hydrologic Functions Multiply the score from S3 by S4; then add score to table on p. 1 6 Comments: Wetland 2A drains to the Valley bottom (Wetland 1A), which drains to the Sammammish Slough, which drains to Lake Washington. None of these waterbodies really flood because of the way Lake Washington is managed to be low during winter. ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 8 of 12 These questions apply to wetlands of all HGM classes. Points HABITAT FUNCTIONS – Indicators that wetland functions to provide important habitat. (only 1 score per box) H 1 Does the wetland have the potential to provide habitat for many species? H 1.1 Vegetation structure (see P. 72): Check the types of vegetation classes present (as defined by Cowardin) – Size threshold for each class is 1/4 acre or more than 10% of the area if unit is smaller than 2.5 acres. Aquatic Bed Emergent plants Scrub/shrub (areas where shrubs have > 30% cover) Forested (areas where trees have > 30% cover) If the unit has a forested class check if: The forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the forested polygon. Add the number of vegetation types that qualify. If you have: Map of Cowardin vegetation classes 4 structures or more points = 4 3 structures points = 2 2 structures points = 1 1 structure points = 0 Figure 2 H 1.2 Hydroperiods (see p.73): Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or 1/4 acre to count (see text for descriptions of hydroperiods). Permanently flooded or inundated 4 or more types present points = 3 Seasonally flooded or inundated 3 or more types present points = 2 Occasionally flooded or inundated 2 types present points = 1 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 Map of hydroperiods Figure 2 H 1.3 Richness of Plant Species (see p. 75): Count the number of plant species in the wetland that cover at least 10 ft2 (different patches of the same species can be combined to meet the size threshold) You do not have to name the species. Do not include Eurasian Milfoil, reed canarygrass, purple loosestrife, Canadian Thistle. If you counted: > 19 species points = 2 5 – 19 species points = 1 List species below if you want to: < 5 species points = 0 0 H 1.4 Interspersion of Habitats (see p. 76): Decided from the diagrams below whether interspersion between Cowardin vegetation (described in H1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, medium, low, or none. Note: If you have 4 or more classes or 3 vegetation classes and open water, the rating is always “high”. Use map of Cowardin classes. Figure 2 H 1.5 Special Habitat Features (see p. 77): Check the habitat features that are present in the wetland. The number of checks is the number of points you put into the next column. Large, downed, woody debris within the wetland 4 in. diameter and 6 ft. long) Standing snags (diameter at the bottom > 4 inches) in the wetland Undercut banks are present for at least 6.6 ft. (2m) and/or overhanging vegetation extends at least 3.3 ft. (1m) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft. (10m) Stable steep banks of fine material that might be used by beaver or muskrat for denning 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least 1/4 acre of thin-stemmed persistent vegetation 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 each stratum of plants NOTE: The 20% stated in early printings of the manual on page 78 is an error. 3 H 1 TOTAL Score – potential for providing habitat Add the points in the column above 9 ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 9 of 12 H 2 Does the wetland have the opportunity to provide habitat for many species? (only 1 score per box) H 2.1 Buffers (see P. 80): Choose the description that best represents condition of buffer of wetland unit. The highest scoring criterion that applies to the wetland is to be used in the rating. See text for definition of “undisturbed”. 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% of circumference. No structures are within the undisturbed part of buffer (relatively undisturbed also means no grazing, no landscaping, no daily human use).. points = 5 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 50% circumference points = 4 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% circumference points = 4 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 25% circumference points = 3 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water for > 50% circumference points = 3 If buffer does not meet any of the criteria above: No paved areas (except paved trails) or buildings within 25m (80 ft) of wetland > 95% circumference. Light to moderate grazing or lawns are OK points = 2 No paved areas of buildings within 50m of wetland for > 50% circumference. Light to moderate grazing or lawns are OK points = 2 Heavy grazing in buffer points = 1 Vegetated buffers are < 2m wide (6.6 ft) for more than 95% circumference (e.g. tilled fields, paving, basalt bedrock extend to edge of wetland) points = 0 Buffer does not meet any of the criteria above points = 1 Arial photo showing buffers Figure 3 H 2.2 Corridors and Connections (see p. 81) H 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft. wide, has at least a 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size? (Dams in riparian corridors, heavily used gravel roads, paved roads, are considered breaks in the corridor). YES = 4 points (go to H 2.3) NO = go to H 2.2.2 H. 2.2.2 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 50 ft. wide, has at least 30% cover of shrubs or forest, and connects to estuaries, other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake- fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (go to H 2.3) NO = go to H 2.2.3 H. 2.2.3 Is the wetland:  Within 5 mi (8km) of a brackish or salt water estuary OR  Within 3 miles of a large field or pasture 40 acres) OR YES = 1 point  Within 1 mile of a lake greater than 20 acres? NO = 0 points 2 Comments: The upper portion of the wetland is forested/ scrub/shrub community. Downslope the wetland transitions to emergent plants. The forested section was mostly saturated or flooded at the time of the survey. ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 10 of 12 H 2.3 Near or adjacent to other priority habitats listed by WDFW (see p. 82): (see new and complete descriptions of WDFW priority habitats, and the counties in which they can be found, in the PHS report http://wdfw.wa.gov/hab/phslist.htm ) Which of the following priority habitats are within 330 ft. (100m) of the wetland unit? NOTE: the connections do not have to be relatively undisturbed. Aspen Stands: Pure or mixed stands of aspen greater than 0.4 ha (1 acre). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report p. 152). Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. Old-growth/Mature forests: (Old-growth west of Cascade crest) Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 20 trees/ha (8 trees/acre) > 81 cm (32 in) dbh or > 200 years of age. (Mature forests) Stands with average diameters exceeding 53 cm (21 in) dbh; crown cover may be less that 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80 - 200 years old west of the Cascade crest. Oregon white Oak: Woodlands Stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158). Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161). Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report: pp. 167-169 and glossary in Appendix Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. Cliffs: Greater than 7.6 m (25 ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock rubble ranging in average size 0.15 - 2.0 m (0.5 - 6.5 ft), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 51 cm (20 in) in western Washington and are > 2 m (6.5 ft) in height. Priority logs are > 30 cm (12 in) in diameter at the largest end, and > 6 m (20 ft) long. If wetland has 3 or more priority habitats = 4 points If wetland has 2 priority habitats = 3 points If wetland has 1 priority habitat = 1 point No habitats = 0 points Note: All vegetated wetlands are by definition a priority habitat but are not included in this list. Nearby wetlands are addressed in question H 2.4) 2 H 2.4 Wetland Landscape: Choose the one description of the landscape around the wetland that best fits (see p. 84)  There are at least 3 other wetlands within 1/2 mile, and the connections between them are relatively undisturbed (light grazing between wetlands OK, as is lake shore with some boating, but connections should NOT be bisected by paved roads, fill, fields, or other development points = 5  The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 5  There are at least 3 other wetlands within 1/2 mile, BUT the connections between them are disturbed. points = 3  The wetland fringe on a lake with disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 3  There is at least 1 wetland within 1/2 mile points = 2  There are no wetlands within 1/2 mile points = 0 3 H 2 TOTAL Score – opportunity for providing habitat Add the scores from H2.1, H2.2, H2.3, H2.4 10 TOTAL for H 1 from page 8 9  Total Score for Habitat Functions Add the points for H 1 and H 2; then record the result on p. 1 19 Comments: ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 11 of 12 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Please determine if the wetland meets the attributes described below and circle the appropriate answers and Category. Wetland Type – Check off any criteria that apply to the wetland. Circle the Category when the appropriate criteria are met. SC1 Estuarine wetlands? (see p.86) Does the wetland unit meet the following criteria for Estuarine wetlands? The dominant water regime is tidal, Vegetated, and With a salinity greater than 0.5 ppt. YES = Go to SC 1.1 NO SC 1.1 Is the wetland unit within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? YES = Category I NO = go to SC 1.2 Cat. 1 SC 1.2 Is the wetland at least 1 acre in size and meets at least two of the following conditions? YES = Category I NO = Category II The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. If the non-native Spartina spp,. are only species that cover more than 10% of the wetland, then the wetland should be given a dual rating (I/II). The area of Spartina would be rated a Category II while the relatively undisturbed upper marsh with native species would be a Category 1. Do not, however, exclude the area of Spartina in determining the size threshold of 1 acre. At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland The wetland has at least 2 of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Cat. I Cat. II Dual Rating I/II SC2 Natural Heritage Wetlands (see p. 87) Natural Heritage wetlands have been identified by the Washington Natural Heritage Program/DNR as either high quality undisturbed wetlands or wetlands that support state Threatened, Endangered, or Sensitive plant species. SC 2.1 Is the wetland being rated in a Section/Township/Range that contains a natural heritage wetland? (This question is used to screen out most sites before you need to contact WNHP/DNR.) S/T/R information from Appendix D or accessed from WNHP/DNR web site YES Contact WNHP/DNR (see p. 79) and go to SC 2.2 NO SC 2.2 Has DNR identified the wetland as a high quality undisturbed wetland or as a site with state threatened or endangered plant species? YES = Category 1 NO not a Heritage Wetland Cat I SC3 Bogs (see p. 87) Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below to identify if the wetland is a bog. If you answer yes you will still need to rate the wetland based on its function. 1. Does the unit have organic soil horizons (i.e. layers of organic soil), either peats or mucks, that compose 16 inches or more of the first 32 inches of soil profile? (See Appendix B for a field key to identify organic soils)? YES = go to question 3 NO = go to question 2 2. Does the wetland have organic soils, either peats or mucks that are less than 16 inches deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on a lake or pond? YES = go to question 3 NO = is not a bog for purpose of rating 3. Does the unit have more than 70% cover of mosses at ground level, AND other plants, if present, consist of the “bog” species listed in Table 3 as a significant component of the vegetation (more than 30% of the total shrub and herbaceous cover consists of species in Table YES = Is a bog for purpose of rating NO = go to question 4 NOTE: If you are uncertain about the extent of mosses in the understory you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16” deep. If the pH is less than 5.0 and the “bog” plant species in Table 3 are present, the wetland is a bog. 4. Is the unit forested 30% cover) with sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Englemann’s spruce, or western white pine. WITH any of the species (or combination of species) on the bog species plant list in Table 3 as a significant component of the ground cover 30% coverage of the total shrub/herbaceous cover)? YES = Category I NO = Is not a bog for purpose of rating Cat. I ---PAGE BREAK--- Wetland name or number: Wetland 4A Wetland Rating Form – Western Washington, Version 2 (7/06), updated with new WDFW definitions Oct. 2008 Page 12 of 12 SC4 Forested Wetlands (see p. 90) Does the wetland have at least 1 acre of forest that meet one of these criteria for the Department of Fish and Wildlife’s forests as priority habitats? If you answer yes you will still need to rate the wetland based on its function. Old-growth forests: (west of Cascade Crest) Stands of at least two three species forming a multi- layered canopy with occasional small openings; with at least 8 trees/acre (20 trees/hectare) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 inches (81 cm or more). NOTE: The criterion for dbh is based on measurements for upland forests. Two-hundred year old trees in wetlands will often have a smaller dbh because their growth rates are often slower. The DFW criterion is and “OR” so old-growth forests do not necessarily have to have trees of this diameter. Mature forests: (west of the Cascade Crest) Stands where the largest trees are 80 – 200 years old OR have an average diameters (dbh) exceeding 21 inches (53 cm); crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth. YES = Category I NO = not a forested wetland with special characteristics Cat. I SC5 Wetlands in Coastal Lagoons (see p. 91) Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks. The lagoon in which the wetland is located contains surface water that is saline or brackish 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom.) YES = Go to SC 5.1 NO not a wetland in a coastal lagoon SC 5.1 Does the wetland meet all of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing) and has less than 20% cover of invasive plant species (see list of invasive species on p. 74). At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland. The wetland is larger than 1/10 acre (4350 square ft.) YES = Category I NO = Category II Cat. I Cat. II SC6 Interdunal Wetlands (see p. 93) Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? YES = Go to SC 6.1 NO not an interdunal wetland for rating If you answer yes you will still need to rate the wetland based on its functions. In practical terms that means the following geographic areas:  Long Beach Peninsula lands west of SR 103  Grayland-Westport lands west of SR 105  Ocean Shores-Copalis – lands west of SR 115 and SR 109 SC 6.1 Is the wetland one acre or larger, or is it in a mosaic of wetlands that is one acre or larger? YES = Category II NO = go to SC 6.2 SC 6.2 Is the wetland between 0.1 and 1 acre, or is it in a mosaic of wetlands that is between 0.1 and 1 acre? YES = Category III Cat. II Cat. III  Category of wetland based on Special Characteristics Choose the “highest” rating if wetland falls into several categories, and record on p. 1. If you answered NO for all types enter “Not Applicable” on p. 1 No Comments: ---PAGE BREAK--- A-6 Preliminary Evaluation of Environmental Requirements Memorandum ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 1 D R A F T T E C H N I C A L M E M O R A N D U M City of Redmond 160th Avenue NE Extension Preliminary Evaluation of Environmental Requirements PREPARED FOR: Steve Gibbs/City of Redmond PREPARED BY: Rob Rodland/CH2M HILL COPY TO: Roger Mason/CH2M HILL DATE: August 3, 2012 Summary This technical memorandum evaluates the proposed 160th Avenue NE Extension Project (project) to determine the environmental requirements based upon three categories: 1. Potential environmental issues, 2. NEPA/SEPA documentation. and 3. Permits (Federal, State and Local). The evaluation highlights these three categories in terms of schedule, cost, or complexity and to identify any potential fatal flaws. Primary environmental impacts with the potential to require additional documentation and schedule length are associated with the wetland and wetland buffer impacts. Because the project will include federal funds NEPA approval will be needed and it is anticipated that the project’s environmental documentation will be a NEPA Documented Categorical Exclusion with supporting documentation. Impacts to wetlands will trigger the need for a federal permit will be required from the Army Corps of Engineers (Corps), which will likely require supporting documentation and which also triggers other state and local permits. In addition to the permits required for the wetland impacts other state and local permits will also be required prior to construction. Approach and Assumptions Existing conditions and potential environmental impacts were evaluated through field visits and review of documentation on the project. In addition, wetlands and streams within the preliminary project footprint were identified and documented in a technical memorandum used to identify potential wetland and stream impacts (Appendix A-5 Wetland and Stream Assessment Technical Memorandum). Environmental elements listed in the WSDOT Environmental Classification Summary (ECS) underwent a cursory review based on the footprint of the project and preliminary design to determine if a potential impact existed that warranted supporting documentation. ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 2 Project definition, project funding, required permits, and anticipated impacts all factor into the type and amount of environmental documentation needed. The NEPA/SEPA documentation determination considers the anticipated environmental impacts and permits identified in this document, plus known project elements in order to predict the likely documentation needed. For both NEPA and SEPA, the final determination will be made by the lead agency –FHWA (delegated largely to WSDOT through Local Programs) for NEPA and the City of Redmond for SEPA. For the project a NEPA Documented Categorical Exclusion (DCE) and SEPA Determination of Non-Significance (DNS) are assumed. Information provided in this technical memorandum must be confirmed and agreed to by these agencies before any environmental documentation begins. For permitting coordination with the agencies will be also be required to confirm the information provided prior to any permit applications being completed. Project Area The project area is located within the City of Redmond, north of the downtown area, and generally located between Woodinville-Redmond Road NE (SR 202) and the Sammamish River. Larger multi-family residential developments are located south of the project area and a mixture of newer single-family and multifamily development is located north of the project area. These areas would be connected with the new roadway connection. The Puget Power Trail generally travels east-west through the City of Redmond and bisects the project. The trail is used by pedestrians, bicyclists, and horses and provides a connection to the Sammamish River Trail to the west of the project. The project area is within a natural environment with sensitive areas and is surrounded by urbanized areas on three sides. There are four streams and four wetlands within the project area. Preliminary wetlands and stream analysis has occurred on the area within the proposed roadway footprint to determine the wetland and stream classifications. Three of the wetlands have been classified as Category III and one as Category IV and all of streams were classified as Category IV based upon City of Redmond standards. The streams in the project area are all non-fish bearing. Refer to Appendix A-5 Wetland and Stream Assessment Technical Memorandum for complete information. Complete wetland and stream delineations would occur as part of the environmental process. Adjacent to project area is the Sammamish River which the streams drain into. The project area is outside of the floodplain. Environmental Issues/Project Development Because there are sensitive environmental areas present project development has tried to minimize the impacts to wetlands and streams. The roadway alternative identified for the project is the same except at one of the required wetland/stream crossing. The difference at the crossing is the type of structures used to cross one of the wetlands and streams. The structure at the crossings results in differences in the wetland and wetland buffer impacts with the least wetland impacts have a wider crossing and different type of structure compared to the crossing with the greatest wetland impact. Federal funding for the project requires NEPA compliance including documents to satisfy Endangered Species Act consultation and Section 106 consultation as well as Section 4(f)/6(f). Local agency projects are not handled by the Federal Highway Administration (FHWA) ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 3 directly and instead go through WSDOT Local Programs. Based upon the preliminary analysis, the project should qualify as a NEPA DCE and would include environmental information similar to a SEPA Checklist. WSDOT Local Programs uses an Environmental Classification Summary (ECS) to address the NEPA requirements. The ECS includes a number of environmental elements that need to be addressed and could require supporting documentation. When completed the ECS is signed by the local agency, WSDOT, and FHWA to complete the environmental process. The following provides summary information on the NEPA ECS on the elements that could require supporting documentation under NEPA or are potential areas of concern. Endangered Species – anticipated that No Effect Letter would meet the requirements because the streams in the project area are non-fish bearing and the potential lack of critical habitat, but the proximity to the Sammamish River may require a Biological Evaluation. Noise – the new roadway section is not in close proximity to any residential units but the new roadway would provide new access and some traffic may divert to the new roadway getting to and from downtown Redmond. The increase in traffic and the new through connection could result in increase in traffic noise that may need to be analyzed. Air Quality – the construction of the new roadway and any interchange modification could require an air quality analysis especially a hot spot analysis for CO. Parks/Section 4(f)/6(f) – construction of the new roadway would temporarily affect the Puget Power Trail and could require closures or detours which results in the need for a Section 4(f). Because the impacts would be temporary no Section 4(f) impact is anticipated. In addition to the Section 4(f) analysis, Section 6(f) would also be required to determine if any of the Puget Power Trails or properties in the area were purchased with federal funds. Aesthetics – a visual quality analysis may be required because the roadway would change the visual quality for users from the Puget Power trail Cultural Resources – although there are streams in the project area none are fish bearing or have been fish bearing because of the steep slopes and these streams more likely provide drainage for slopes in the area. To minimize impacts because the area has not been previously disturbed initial survey including shovel probing should be conducted to determine the potential presence of any deposits in coordination with the WSDOT archaeologist and the Washington State Department of Historic Preservation. Any evidence of historic deposits will require further testing. Stormwater ‐ The project would create additional impervious surfaces. All runoff from the new impervious surfaces would be detained and treated in accordance with the latest Washington Department of Ecology’s stormwater design manual. Environmental Justice – the project is does not require the acquisition of any residential properties and is within an area with no population except for the adjacent properties. The project is likely to have no significant impacts and includes a number benefits improved access, new bicycle and pedestrian facilities, and improvements to water quality), therefore ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 4 no impacts to environmental justice populations (minority and low-income) are not anticipated. Beyond the wetland impacts, any impacts to air quality, cultural resources, parks, surface water, aesthetics, and environmental justice would be largely indistinguishable depending the crossing selected. Runoff from new impervious surfaces, regardless of the amount, would be detained and treated before entering the City’s stormwater system and ultimately the Sammamish River. The project requires the acquisition of additional right-of-way, but does require the acquisition and displacement of any residences or businesses, but the property acquisition cannot be started until the NEPA documentation is completed. In addition to the NEPA documentation, a SEPA checklist with any supporting documentation could be required to support the assumed DNS, unless the City of Redmond SEPA official will accept and adopt the NEPA approval in place of SEPA. In addition the NEPA/SEPA documentation, federal, state, and local environmental permits will be required prior to construction of the project. Table 1 provides complete information on the environmental documentation and permits that will likely be required prior to construction. The information in Table 1 based upon the proposed alignment and the known conditions in the project area and is subject to change as design progresses and based upon a pre-application conference with the City of Redmond. The need to a CWA Section 404 permit is required because of the wetland impacts. Because the wetland impacts have been minimized through project design and are under 0.5 acre a Nationwide Permit will be needed instead of an Individual Permit. The Nationwide Permit is a generalized permit for those activities that have minimize impacts. For this project would be a Nationwide Permit 12 (linear transportation corridors). The need for a Section 404 permit triggers the need for a Section 401 permit. Because of the size and flow of the streams in the project area it is assumed that a City of Redmond Shoreline Substantial Development Permit would be not required and because the streams are located outside of the shoreline jurisdiction described in Redmond Community Development Guide 20D.150.20. ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 5 Table 1 Anticipated Environmental Requirements– 160th Ave NE Extension Permit Trigger Submittal Information Typical Review Timeline Federal Compliance/Permits National Environmental Policy Act (NEPA) Federal action – including Federal Funds, Federal Lands, or Federal Permits WSDOT Environmental Classification Summary Supporting Documentation Typically 6 to 12 months for a NEPA DCE. Depends on required supporting documentation Endangered Species Act Compliance (Section 7) If the project is located or could affect a listed species or critical habitat WSDOT ECS Biological Evaluation/Assessment - potential Tied to NEPA Section 106 Federal action that may affect a historic property or site. Requires tribal consultation Cultural Resources Report Tied to NEPA Section 4(f)/6(f) Temporary closure/detour of the Puget Power Trail Potential property acquisitions with federal funds Section 4(f)/6(f) Analysis and Determination Tied to NEPA Clean Water Act (CWA) Section 404 - USACE Dredge and/or placement of fill within streams or wetlands. Under 0.5 acre wetland impact triggers a Nationwide Permit. Joint Aquatic Resource Permit Application (JARPA) Wetland/Stream report Cultural Resources Typically 3 to 6 months U.S. Fish and Wildlife Bald Eagle Management Permit Bald eagles nest within 600 feet of construction activities Permit Typically 3 months State Permits NPDES for Construction Activity - Washington Department of Ecology (Ecology) Soil disturbing activities of one acre or more Construction Stormwater General Permit Application Stormwater Pollution Prevention Plan Typically less than 2 months. Requires SEPA to be complete prior to approval CWA Section 401 Water Quality Certification - Ecology Triggered by the CWA Section 404 Permit JARPA Typically 1 to 4 months. ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 6 Any activity that might result in discharge of dredged or fill material into waters or wetlands. Tied to the CWA Section 404 Permit Hydraulic Project Approval - Washington Department of Fish and Wildlife Work located within, over, or under the Ordinary High Water Mark of waters of the state. JARPA Typically within 45 days. Requires SEPA to be complete prior to approval Local Permits - City of Redmond State Environmental Policy Act (SEPA) Proposals with an ‘action’. SEPA Checklist Supporting documentation Typically 4 months Clear and Grade Permit Required to clear trees, excavate, fill and grade Application Drainage Report Geotech report Typically 4 months Right-of-Way Permit Work within existing City right-of-way Right-of-Way Permit Plans TCP Typically 4 months Critical Areas Review To address impacts to critical areas within the project area Critical Areas Report Varies based upon project impacts May trigger the need for a Reasonable Use Permit Tree Removal Removal of more than 10 significant trees or stand of trees. Tree Removal Permit Tree Removal Exception Request (criteria in Redmond Zoning Code 21.72.090) Typically 2 to 3 weeks – trees within critical area Expires 60 days from date of issuance More than 10 trees triggers Clearing and Grading Permit ---PAGE BREAK--- PRELIMINARY EVALUATION OF ENVIRONMENTAL REQUIREMENTS 7 The environmental documentation and permit process for the project is assumed to take up to 18 months to complete. Additional study during the preliminary design will be able to more accurately determine the environmental documentation and permitting requirements. Based on the anticipated environmental impacts, it is anticipated that the project does not have any constraining fatal flaws that could require the preparation of NEPA Environmental Assessment or Environmental Impact Statement which would extend the schedule for environmental documentation. Conclusion The project will require NEPA and SEPA approval and a number of federal, state, and local permits with the federal permits being triggered by the wetland impacts. Any crossing of the wetlands and streams generally has the same level of environmental impact with the only difference from an environmental standpoint being the wetland impacts. For the project the following is the anticipated environmental documentation: 1. NEPA DCE - WSDOT ECS and supporting documentation (Air Quality, Noise, Cultural Resources, and Aesthetics) and potentially a Biological Evaluation. 2. SEPA Checklist with supporting documentation. Unless SEPA official chooses to adopt NEPA Using the preliminary design and potential environmental impacts, the permits described in Table 1 were developed for the project. Using the information from Appendix A-5 Wetland and Stream Assessment Technical Memorandum and the preliminary design information minimized the wetland impacts to under 0.5 acres. This results in the need for a Nationwide Permit instead of an Individual Permit which would extend the permitting timeline. The majority of the permits are local permits from the City of Redmond. Based upon the this information it is recommended that for project planning assume up to 18 months will be required to complete the necessary environmental documentation and permitting process. For both the environmental documentation and the permitting coordination with the relevant agencies early in the process will ensure all requirements are addressed to complete the environmental process and construct the project. In additional, a complete wetland delineation and streams assessment of the entire project area will be required to ensure the accuracy of the wetland locations and potential impacts, as well as identify areas for potential wetland mitigation. ---PAGE BREAK--- A-7 Traffic Study and Operational Analysis Technical Memorandum ---PAGE BREAK--- HCM Capacity Analysis ---PAGE BREAK--- Alternative 1 – No Build ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- Alternative 2 - Roundabout ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- Alternative 3 – Signalized Intersection ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- Appendix B Meeting Minutes ---PAGE BREAK--- APPENDIX B – MEETING MINUTES CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT B-1 AUGUST 2012 160th Extension Workshop 1 – 2/8/2012 DRAFT ‐ Meeting Minutes 2/9/2012 Attendees City of Redmond: Steve Gibbs, Roger Dane, Thara Johnson, Carolyn Hope, Rob Crittenden, Tricia Thomson, Steve Hitch CH2M: Roger Mason, Mark Johnson, Dustin Atchison, Ken Green, Chris Royak, Hans Ehlert, Andrew Bastasch General Project Comments: Steve G. – Project is only authorized for PE. To warrant further consideration and funding by council, cost should be around $10 to $12 (didn’t specify if that was construction or total). $20 million is too much. Adjacent property owners are not pleased with project generally, or those that are against it are more vocal than those that are for it. Veal property is a rental and will likely be a full take. Task Related Discussion  Steve G. – Wetland impacts should be minimized as much as possible.  Rob C. – Bike lane standard is 5.5’ min, 6’ preferred per city standards. 11’ lanes minimum, 12’ lanes preferred. 6’ sidewalk minimum.  Rob C. – Turn lane not necessary but 2 uphill lanes are preferable, especially when grades are  Rob C. – Sidewalk on only 1 side is not preferable and not standard.  Rob C. – City full standard for “local collector” road is 58’ wide, downhill section can have a wider lane in lieu of exclusive bike lane.  Rob C. – Current pipeline has approximately 4’ of cover  Carolyn H. – Trail will eventually be ADA compliant with adjacent soft surface for equestrians. To accommodate equestrians, 12’+ vertical clearance will be needed. [need to pinpoint actual height required for undercrossing]  Rob C. – Traffic volumes will be similar to half of Red‐Wood Road; traffic using this corridor will likely split evenly between Red‐Wood and 160th in the future.  Roger D. – Northern stream is class 4 presently, but will be class 3 at next map update. Specifically, the stream will be class 3 west of proposed 160th alignment, class 4 to the east.  Thara J. – Trail must be outside of 25’ buffer from stream if paved, other materials may be allowed within buffer.  Ken G. / Hans E. – Most ravines in this area, including with proposed trail crossing, have wetland limits right to toe of slopes.  Thara J. – Wetland mitigation strongly preferred on site, no net loss of wetlands are permitted.  Rob C. – 160th is to be considered a “multimodal” facility accommodating a range of users.  Rob C. / Steve G. – Intersection with Red‐Wood Rd. considered part of project [consultant has traffic operation report and conceptual layout, further information or any previous cost of improvements would be useful] Roundabout is a potential candidate and 160th will into Red‐Wood Rd.  Roger D. – Cantilevered sidewalk is a good approach.  Steve G. – RIGHT‐OF‐WAY swaps possible.  Thara J. – City council prefers saving as many trees as possible, favored 99 EIS alignment that minimized arbor impacts.  Rob C. – Design criteria are listed in Appendix 2 of city Zoning Code, furthermore: o Design speeds should be 10mph greater than posted speed, 160th should be posted at 30mph. o Max grade: 8% preferred, 10% max. o Refer to standards for minimum curve radius, lane widths, etc o No superelevation should be included for this facility  Steve G. – No traffic calming features (speed bumps, etc) ---PAGE BREAK--- APPENDIX B – MEETING MINUTES CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT B-2 AUGUST 2012  Carolyn H. – Grade separated trail crossing is strongly preferred. There is a potential for grant funding if trail is combined with road. At a minimum however, at grade, signalized trail crossing is acceptable.  Steve G. – New water service is anticipated to be provided 1 parcel to the south in the future.  Steve G. – Neighborhood outreach is not required at this point. Action Items City of Redmond:  Obtain “Right of Entry” permits for survey team  Determine minimum vertical clearance of equestrian trail CH2M Hill  Begin surveying area and marking wetlands  Develop/refine alignment alternatives  Research cost‐effective bridge and culvert alternatives ---PAGE BREAK--- Appendix C Project Photos ---PAGE BREAK--- Appendix C Project Photos ---PAGE BREAK--- APPENDIX C – PROJECT PHOTOS CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT C-1 AUGUST 2012 Typical Project Woodland Landscape Typical Project Existing Groundcover Existing Stream Crossing Existing Stream Crossing PSE Trail, Looking East PSE Trail, Looking West ---PAGE BREAK--- APPENDIX C – PROJECT PHOTOS CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT C-2 AUGUST 2012 Wetland 3 Crossing Existing Grade Between SR 202 and Project Wetland 1, Adjacent to Riverpoint Wetland 1 Existing Terminus of 160th Ave PSE Trail Crossing of SR 202 ---PAGE BREAK--- APPENDIX C – PROJECT PHOTOS CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT C-3 AUGUST 2012 PSE Trail, Looking West Typical Project Site Vegetation PSE Access Road & Equestrian Trail Area 1 – Looking North at Wetlands Area 2 – First Ravine Stream Crossing Area 2 – Second Ravine Looking West ---PAGE BREAK--- APPENDIX C – PROJECT PHOTOS CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT C-4 AUGUST 2012 PSE Trail, East of SR 202 PSE Powerline Trail Sign Blackberry Vegetation Utility Corridor Crossing Site PSE Distribution Tower PSE Distribution Tower ---PAGE BREAK--- APPENDIX C – PROJECT PHOTOS CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT C-5 AUGUST 2012 PSE Trail Crossing at SR 202 Signage Near Southern Terminus Utilities Located Near Existing Terminus Drainage Facilities Near Existing Terminus “Redmond 74” Development Drainage Facilities Near Existing Terminus ---PAGE BREAK--- APPENDIX C – PROJECT PHOTOS CITY OF REDMOND – 160TH AVENUE NE EXTENSION PRE-DESIGN REPORT C-6 AUGUST 2012 Connection Road to 160th Ave Extension Connection Road to 160th Ave Extension Existing Retaining Structure at Southern End ---PAGE BREAK--- Appendix D Electronic Basemap & Digital Terrain Model ---PAGE BREAK--- Pocket to Insert CD of Survey Basemap Here