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HomeMy WebLinkAboutBoeing_MultipleProjeStreamStudyHabitatRpt_032917 STANDARD STREAM STUDY NARRATIVE AND HABITAT DATA REPORT Multiple Projects Renton, Washington Prepared for: The Boeing Company Renton, Washington Prepared by: Amec Foster Wheeler Environment & Infrastructure, Inc. 3500 188th Street SW, Suite 601 Lynnwood, Washington 98037 (425) 921-4000 March 2017 Project No. LY17160440 Amec Foster Wheeler Project No. LY17160440 i multipleprojstreamstudyhabitatrpt_032917.docx TABLE OF CONTENTS Page 1.0 INTRODUCTION ............................................................................................................ 1  1.1 EXISTING SEWAGE LIFT STATION REPLACEMENT ................................................... 1  1.2 GATE D-50 ENTRANCE MODIFICATION AND PEDESTRIAN PATHWAY ADDITION ........ 2  1.3 NEW FUEL SPILL CONTAINMENT AT APRON D ........................................................ 2  1.4 RENTON MUNICIPAL CODE 4-8-120C .................................................................... 3  2.0 STANDARD STREAM STUDY NARRATIVE ................................................................. 7  2.1 STREAM CLASSIFICATION ...................................................................................... 7  2.2 VEGETATIVE COVER ............................................................................................. 7  2.2.1 Existing Sewer Lift Station Replacement ................................................ 7  2.2.2 Gate D-50 Entrance Modification and Pedestrian Pathway Addition ...... 8  2.2.3 Apron D Fuel Spill Containment .............................................................. 9  2.3 ECOLOGICAL FUNCTION ...................................................................................... 11  2.4 FISH AND WILDLIFE ............................................................................................. 12  2.4.1 Mammals .............................................................................................. 12  2.4.2 Birds ...................................................................................................... 12  2.4.3 Amphibians and Reptiles ...................................................................... 12  2.4.4 Fish ....................................................................................................... 13  2.5 MEASURES TO PROTECT TREES AND VEGETATION .............................................. 15  2.6 NO NET LOSS OF ECOLOGICAL FUNCTION ........................................................... 15  3.0 HABITAT DATA REPORT ............................................................................................ 17  3.1 HABITAT DIVERSITY ............................................................................................ 17  3.2 MIGRATION CORRIDORS ..................................................................................... 18  3.3 SPECIES AND COVER TYPES ............................................................................... 18  3.4 IDENTIFICATION OF DISTURBED AREAS ................................................................ 19  3.5 EXISTING HABITAT VALUES AND FUNCTIONS ........................................................ 19  3.5.1 Temperature ......................................................................................... 20  3.5.2 Water Quality ........................................................................................ 20  3.5.3 Reach Sinuosity .................................................................................... 20  3.5.4 Vegetative Conditions ........................................................................... 21  3.5.5 Floodplain Condition ............................................................................. 21  3.5.6 Habitat Values and Functions at the Project Site .................................. 21  3.6 HABITAT ALTERATIONS AND IMPACTS AND PROPOSED HABITAT MANAGEMENT PROGRAM .................................................................................... 21  4.0 REFERENCES ............................................................................................................. 23  TABLE OF CONTENTS (Continued) Amec Foster Wheeler ii Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx TABLES Table 1 Small Mammals Reported to Occur Along the Lower Cedar River Table 2 Birds Reported to Occur Along the Lower Cedar River Table 3 Non-Native Fish Species Introduced into the Lake Washington/Lake Union System Table 4 Different Aquatic Life Uses and Their Associated Numeric Temperature Criteria FIGURES Figure 1 Vicinity and Site Maps Figure 2 Aerial Photo of Project Locations (in Red) Figure 3 Bldg. 4-42 Sewage Life Station, Plan View Figure 4 Gate D-50 Fencing and Barriers, Plan View Figure 5 Gate D-50 Paving and Grading, Plan View Figure 6 Gate D-50 Guard House Floor Plan, Plan View Figure 7 Gate D-50 Guard House Exterior Elevations Figure 8 Apron D Fuel Spill Containment Plan APPENDICES Appendix A Bldg. 4-42 Sewage Lift Station Photo Log Appendix B Gate D-50 Photo Log Appendix C Apron D Fuel Spill Containment Photo Log Amec Foster Wheeler Project No. LY17160440 1 multipleprojstreamstudyhabitatrpt_032917.docx STANDARD STREAM STUDY NARRATIVE AND HABITAT DATA REPORT Multiple Projects Renton, Washington 1.0 INTRODUCTION As part of the Renton plant transition from the 737 next generation to the new 737 MAX program, The Boeing Company (Boeing) proposes modifications and additions to three existing facilities: replacing a sewage lift station that services Buildings 4-42, 4-41, and the west side of Building 4-40; modifying the Gate D-50 entrance to add a pedestrian walkway; and adding a fuel-spill containment system at Apron D. The sewage lift replacement project site and Apron D spill containment project site are located on the eastern shore of the lower Cedar River (LCR) within the 200-foot shoreline setback zone, while the Gate D-50 modification project site is located on the western shore of the LCR within the 200-foot shoreline setback zone (Figures 1 and 2). The project areas consist primarily of flat, impervious pavement and buildings used for manufacturing support or aircraft parking and are fenced to prevent public access. Each of the three proposed tasks are described below. 1.1 EXISTING S EWAGE L IFT S TATION R EPLACEMENT The scope of work for this task involves replacement of the Building 4-42 sewage lift station, which serves Buildings 4-42, 4-41, and the west side of Building 4-20. The new lift station will be constructed and readied to place on line. During an outage, the sewer pipes will be switched from the old lift station to the new lift station without impacting the building operations. Design of the new lift station will take into effect the need to keep the buildings operational except for the switchover. An existing fire line will be rerouted for new lift station. The scope of work includes installation of a new vault for collection of sewage, two new submersible sewage pumps, controls, and piping. The existing 8-inch sewer line from Buildings 4-42 and 4-41 will be rerouted to the new 8-foot sewage lift station vault. A 48-inch-diameter manhole will be installed to collect the sewage upstream of the new vault. The 4-inch discharge line from the new sewage pumps will be connected to the existing 4-inch sewage discharge line just south of the new lift station. The old sewage lift station will be demolished and filled in after the new lift station is put into service. The disturbed impervious surface will be approximately 1,900 square feet. No new impervious surface area will be added as part of the proposed task, nor will any new lighting be installed as part of the proposed task (Figure 3). Amec Foster Wheeler 2 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx The proposed task is expected to begin in July 2017 and to be completed by October 2017. 1.2 GATE D-50 E NTRANCE M ODIFICATION AND P EDESTRIAN P ATHWAY A DDITION The scope of work for this proposed task will include:  Removal of a 24-foot automatic gate and 60 feet of existing fencing to create new opening;  Removal of asphalt and curbing;  Installation of 136 linear feet of new 7-foot-high fencing and a new 36-foot-wide double swing gate;  Installation of one traffic control swing arm;  Replacement of approximately 3,280 square feet of existing asphalt;  Adding two new concrete bollards;  Installation of a new 3-foot by 7-foot exterior door, a 4-foot by 4-foot concrete landing, metal stairs, and a 3-foot by 5-foot awning at existing guard house; and  Relocating two light fixtures 7-feet high on the existing guard house (the light fixtures will be directed downward and away from the LCR). The proposed task will not add any new impervious surfaces, but will only replace existing asphalt and concrete surfaces that will be disturbed during the proposed (Figures 4 to 7). The proposed task is expected to begin in July 2017 and to be completed by September 2017. 1.3 NEW F UEL S PILL C ONTAINMENT AT A PRON D The proposed task will add a new fuel containment system to the Boeing Apron D, which is used for 737 aircraft stalls. The proposed task will include:  Replacement of a 72-inch storm drainage manhole with an 84-inch storm drainage manhole;  Installation of two new 5,000-gallon fuel spill containment tanks;  Replacing 7 linear feet of existing 12-inch and 24-inch-diameter pipes; and  Replacing 840 square feet of existing asphalt pavement and 750 square feet of concrete pavement for a total of 1,590 square feet total replaced pavement. No new impervious surface area will be added as part of the proposed task, nor will any new lighting be installed as part of the proposed task (Figure 8). The proposed task is expected to begin in August 2017 and to be completed by December 2017. Amec Foster Wheeler Project No. LY17160440 3 multipleprojstreamstudyhabitatrpt_032917.docx 1.4 RENTON M UNICIPAL C ODE 4-8-120C Under the Renton Municipal Code (RMC) 4-8-120C (Submittal Requirements – Specific to Application Type: Land Use Applications), the City requires the following environmental reports to be included with Boeing’s permit application submittal for the proposed project: Stream or Lake Study, Standard: A report shall be prepared by a qualified biologist, unless otherwise determined by the Administrator, and include the following information: a. Site Map: Site map(s) indicating, at a scale no smaller than one inch equals twenty feet (1" = 20') (unless otherwise approved by the Administrator of the Department of Community and Economic Development or designee): i. The entire parcel of land owned by the applicant, including one hundred feet (100') of the abutting parcels through which the water body(ies) flow(s); ii. The OHWM determined in the field by a qualified biologist pursuant to RMC 4-3-050L1b (the OHWM must also be flagged in the field); iii. Stream or lake classification, as recorded in the City of Renton Water Class Map in RMC 4-3-050Q4 or RMC 4-3-090 (if unclassified, see “Supplemental Stream or Lake Study” below); iv. Topography of the site and abutting lands in relation to the stream(s) and its/their buffer(s) at contour intervals of two feet (2') where slopes are less than ten percent (10%), and of five feet (5') where slopes are ten percent (10%) or greater; v. One hundred (100) year floodplain and floodway boundaries, including one hundred feet (100') of the abutting parcels through which the water body(ies) flow(s); vi. Site drainage patterns, using arrows to indicate the direction of major drainage flow; vii. Top view and typical cross-section views of the stream or lake bed, banks, and buffers to scale; viii. The vegetative cover of the entire site, including the stream or lake, banks, riparian area, and/or abutting wetland areas, extending one hundred feet (100') upstream and downstream from the property line. Include position, species, and size of all trees at least ten inches (10") average diameter that are within one hundred feet (100') of the OHWM; Amec Foster Wheeler 4 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx ix. The location, width, depth, and length of all existing and proposed structures, roads, stormwater management facilities, wastewater treatment and installations in relation to the stream/lake and its/their buffer(s); and x. Location of site access, ingress and egress. b. Grading Plan: A grading plan prepared in accordance with RMC 4-8-120D7, and showing contour intervals of two feet (2') where slopes are less than ten percent (10%), and of five feet (5') where slopes are ten percent (10%) or greater. c. Stream or Lake Assessment Narrative: A narrative report on eight and one-half inch (8.5") by eleven inch (11") paper shall be prepared to accompany the site plan and describes: i. The stream or lake classification as recorded in the City of Renton Water Class Map in RMC 4-3-050Q4 or RMC 4-3-090; ii. The vegetative cover of the site, including the stream or lake, banks, riparian area, wetland areas, and flood hazard areas extending one hundred feet (100') upstream and downstream from the property line, including the impacts of the proposal on the identified vegetation; iii. The ecological functions currently provided by the stream/lake and existing riparian area and the impacts of the proposal on the identified ecological functions; iv. Observed or reported fish and wildlife that make use of the area including, but not limited to, salmonids, mammals, and bird nesting, breeding, and feeding/foraging areas, including the impacts of the proposal on the identified fish and wildlife; v. Measures to protect trees, as defined per RMC 4-11-200, and vegetation; and vi. For shorelines regulated under RMC 4-3-090, Shoreline Master Program, the study shall demonstrate if the proposal meets the criteria of no net loss of ecological functions as described in RMC 4-3-090D2. If the proposal requires mitigation for substantial impacts to the existing vegetation buffer in order to demonstrate no net loss of ecological functions, a supplemental stream or lake study may be required by the Administrator of the Department of Community and Economic Development or designee. (Ord. 5137, 4-25-2005; Ord. 5633, 10-24-2011). Amec Foster Wheeler Project No. LY17160440 5 multipleprojstreamstudyhabitatrpt_032917.docx Habitat Data Report: Habitat data reports include: a. Site Plan: The site plan shall indicate: i. The vegetative cover types reflecting the general boundaries of the different plant communities on the site; ii. The exact locations and specifications for all activities associated with site development including the type, extent and method of operations; iii. Top view and typical cross-section views of critical habitat/wildlife habitat to scale; iv. The results of searches of the Washington Department of Fish and Wildlife’s Natural Heritage and Non-Game Data System databases; v. The results of searches of the Washington Department of Fish and Wildlife Priority Habitat and Species database. b. Narrative Report: A narrative report shall be prepared to accompany the site plan which describes: i. The layers, diversity and variety of habitat found on the site; ii. The location of any migration or movement corridors; iii. The species typically associated with the cover types, including an identification of any critical wildlife species that might be expected to be found; iv. Identification of any areas that have been previously disturbed or degraded by human activity or natural processes; v. A summary of existing habitat functions and values, utilizing a habitat evaluation procedure or methodology approved by the City; vi. A summary of proposed habitat alterations and impacts and proposed habitat management program. Potential impacts may include but are not limited to clearing of vegetation, fragmentation of wildlife habitat, expected decrease in species diversity or quantity, changes in water quality, increases in human intrusion, and impacts on wetlands or water resources. (Ord. 4835, 3-27-2000) Amec Foster Wheeler 6 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx This report provides a description of the environmental and habitat attributes of the project site where the proposed project is to occur, as defined by RMC 4-8-120C. Sections 2.0 and 3.0 present the requisite information for the Standard Stream Narrative and Habitat Data Report, respectively. Amec Foster Wheeler Project No. LY17160440 7 multipleprojstreamstudyhabitatrpt_032917.docx 2.0 STANDARD STREAM STUDY NARRATIVE This section presents the standard stream study narrative, providing information about existing habitat conditions and functions of the lower Cedar River (LCR) adjacent to the proposed project site. 2.1 STREAM C LASSIFICATION According to RMC 4-3-050Q4 (City of Renton Water Class Map), the LCR in the vicinity of the project site is Class 1 water. 2.2 VEGETATIVE C OVER Amec Foster Wheeler Environment & Infrastructure, Inc. (Amec Foster Wheeler) biologists, Jessica Youngblood and Bob Stuart, conducted a site survey on March 23, 2017 to assess habitat conditions and vegetative cover along the LCR shoreline adjacent to and within 100 feet upstream and downstream of the proposed project sites. The project sites are defined as those areas within the 200- foot shoreline zone adjacent to the LCR. The three project sites are currently used by Boeing to support their 737 manufacturing program. The Boeing facilities on the east and west shorelines of the LCR and the Renton Municipal Airport on the west shoreline of the LCR consist primarily of concrete and asphalt surfaces. 2.2.1 Existing Sewer Lift Station Replacement A vegetation survey was conducted along the east bank of the LCR along the City of Renton’s Cedar River Trail Park, located just west of Boeing’s Bldg. 4-42. The park consists of a vegetated strip immediately adjacent to the riparian area, a sidewalk, and roadway. The survey extended 300 feet upstream and downstream from the proposed location of the new sewage lift station, which aligns with the boat ramp on the LCR within the Cedar River Trail Park. The survey extended 300 feet north and south of this point with photos being taken at 100-foot intervals. Photos were taken looking west, north, and south at each point. In some instances, photos were taken looking downward at specific plants. A photo log for this project area is presented in Appendix A. Figure A-1 in the photo log provides an aerial image showing the locations where the photos were taken. The project boundary on the Boeing property is located approximately 160 feet east of the eastern bank of the LCR. The riparian area along the eastern bank of the river adjacent to and within 300 feet upstream and downstream of the project site appears to have been landscaped with mix of native and non-native vegetation. Invasive species such as Himalayan blackberry (Rubus armeniacus), reed canarygrass (Phalaris arundinacea) (Appendix A, Photos 1, 2, and 10), and Scot’s broom (Cytisus scoparius) (Appendix A, Photo 11) were observed at several locations along the eastern shoreline of the LCR adjacent to the project site. Extending north of the boat launch, the shoreline vegetation Amec Foster Wheeler 8 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx consists of several tree species with diameters at breast height (DBH) greater than 10 inches. These include red alder (Alnus rubra) (Appendix A, Photos 3, 5, 6, and 12), mature willow (Salix spp.) (Appendix A, Photos 7, 8, and 9), shore pine (Pinus contorta var. contorta) (Appendix A, Photo 4), and bigleaf maple (Acer macrophyllum) (Appendix A, Photo 13). A number of shrub species were also observed including flowering currant (Ribes sanguineum) (Appendix A, Photo 6) and nootka rose (Rosa nutkana) (Appendix A, Photo 11). Other unidentified shrub species were also observed (Appendix A, Photo 5). Much of the area between the project site and eastern shoreline of the LCR consisted of manicured lawns and paved pedestrian pathways roadways (Appendix A, Photos 7, 8, and 9). Portions of the eastern bank of the LCR within 300 feet north of the proposed project site consist of timber pile and timber-lagging bulkhead, above which is located a steep bank approximately 20 feet wide where the riparian vegetation occurs (Appendix A, Photo 10). Fresh beaver activity was observed beyond 300 feet north of the boat ramp, just south of Boeing’s North Bridge (Appendix A, Photos 14, 15, 16, and 17). The east shoreline of the LCR south of the project site is similar to that north of the project site. The narrow riparian zone is bordered to the east by manicured lawns and a paved pedestrian pathway and roadway (Appendix A, Photos 19, 25, 27, 28, and 29). A number of large tree species that are greater than 10 inches DBH occur south of the project site and include red alder (Appendix A, Photos 20 to 24), shore pine (Appendix A, Photos 18, 19, 20, and 29), and an unidentified poplar species (Appendix A, Photos 19). A number of shrubs occurred south of the project site including a long band of red osier dogwood (Cornus sericea) located approximately 300 feet south of the project site (Appendix A, Photos 25 to 28) and flowering currant (Appendix A, Photo 22). A number of unidentified shrub species were also observed along the riparian zone south of the project site (Appendix A, Photos 21 and 24). 2.2.2 Gate D-50 Entrance Modification and Pedestrian Pathway Addition The Gate D-50 project site is located approximately 155 feet west of the west bank of the LCR and approximately 4,600 feet south of the Bldg. 4-42 Sewage Lift Station project site and 480 feet north of the Logan Avenue Bridge (Figure 2). A vegetation survey was conducted from the east bank of the LCR adjacent to and extending 100 feet upstream and downstream of the project site. Appendix B provides a photographic log depicting habitat conditions and vegetation along the riparian zone of the Amec Foster Wheeler Project No. LY17160440 9 multipleprojstreamstudyhabitatrpt_032917.docx west bank of the LCR adjacent to the project site. Figure B-1 in the photo log provides an aerial image showing the locations where the photos were taken. The riparian zone along the west bank of the LCR adjacent to and 100 feet north and south of the Gate D-50 project site is narrow (6 to 12 feet wide), consisting of a riprapped bank abutting an 8-foot- high concrete flood-control wall confining the width of the riparian zone in this area of the river. Riparian vegetation at the time of the survey was very sparse to non-existent, consisting of unidentified grasses and weeds (Appendix B, Photos 1 to 10). A narrow band of small alder trees was observed on the west bank of the LCR just beyond 100 feet south of the Gate D-50 project site (Appendix A, Photo 7). No trees with trunks greater than or equal to 10 inches DBH are located within 100 feet of the project site on the west bank of the LCR. 2.2.3 Apron D Fuel Spill Containment The Apron D Fuel Spill Containment project site is located approximately 80 feet east of the LCR, and the northern boundary of the project site is located approximately 2,700 feet south of the Bldg. 4-42 Sewage Life Station project site. The Apron D project site is roughly 620 long and separated from the east bank of the LCR by the Cedar River Trail Park (Figure 2). A vegetation survey was conducted along the east bank of the LCR along the City of Renton’s Cedar River Trail Park adjacent to the Apron D project site and 100 feet north and south of the project boundaries. Photos were taken of the riparian vegetation at 100-foot intervals along the entire length of the Apron D project site. Appendix C provides a photo log of shoreline photos taken adjacent to this project site. Figure C-1 in the photo log provides an aerial image showing the locations where the photos were taken. Riparian vegetation along the east bank of the LCR adjacent to Apron D is separated from Apron D by a paved pedestrian pathway surrounded by manicured lawns. At the northern boundary of the site there is a hedge of Forsythia spp., as well as an unidentified poplar tree species (>10 inches DBH) and unidentified shrubs (Appendix C, Photos 1 to 3). The vegetation at 100 feet north of the northern boundary of Apron D is nearly identical (Appendix C, Photos 4 to 6). The vegetation at 100 feet south of the northern boundary of Apron D is nearly identical to that described in the above paragraph (Appendix C, Photos 7 to 9). Riparian vegetation adjacent to the LCR at this location consists of ferns, unidentified shrub species, Forsythia spp., shore pine, and unidentified tree species (Appendix C, Photos 10 to 12). Amec Foster Wheeler 10 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx Riparian vegetation adjacent to the LCR 200 feet south of the northern boundary of Apron D consists manicured lawn, alder trees, willows (Salix spp.), shore pine (>10 inches DBH”), unidentified shrub species, and blackberries (Appendix C, Photos 13 to 15). Vegetation closer to Apron D is similar to that already described in areas north of this point. Riparian vegetation adjacent to the LCR 300 feet south of the northern boundary of Apron D is nearly identical to that described above at 200 feet south of the northern boundary of Apron D (Appendix C, Photos 16 to 20). At 400 feet south of the northern boundary of Apron D, there is a group of shore pines (>10 inches DBH) immediately adjacent to the fence separating Apron D from the Cedar River Trail Park (Appendix C, Photo 21). Shoreline vegetation at this location consists of manicured lawn, alder trees, unidentified shrub species, and shore pine (>10 inches DBH) (Appendix C, Photos 22 to 24). At 500 feet south of the northern boundary of Apron D, there are unidentified poplar tree species (>10 inches DBH) and unidentified shrub species immediately adjacent to the fence separating Apron D from the Cedar River Trail Park (Appendix C, Photo 25). Closer to the east bank of the LCR shore pines (>10 inches DBH) dominate the shoreline vegetation with some small willow trees (Salix spp.) and manicured lawn (Appendix C, Photos 26 to 28). At 600 feet south of the northern boundary of Apron D, there are unidentified poplar tree species (>10 inches DBH) and unidentified shrub species immediately adjacent to the fence separating Apron D from the Cedar River Trail Park (Appendix C, Photos 29 and 30). Boeing’s South Bridge dominates a portion of the shoreline at this location (Appendix C, Photos 59 and 60). Riparian vegetation at this location consists of manicured lawn, shore pine (>10 inches DBH), some small willows, alder, an unidentified poplar species, and ferns (Appendix C, Photos 30 and 31). Beyond 600 feet south of the northern boundary of Apron D to the southern boundary of the Apron D project site, the riparian zone is dominated by manicured lawn, alder trees (>10 inches DBH), shore pine (>10 inches DBH), unidentified shrub species, and blackberries (Appendix C, Photos 32 to 35). An unidentified poplar species and unidentified shrub species occur immediately adjacent to the Apron D fence line (Appendix C, Photos 34 and 36). At 100 feet south of the southern boundary of Apron D, vegetation immediately adjacent to the Apron D fence line and east of the pedestrian pathway consists of manicured lawn, an unidentified species of poplar tree (>10 inches DBH), unidentified shrub species, and shore pine (>10 inches DBH) (Appendix C, Photos 37, 39, and 40). Riparian vegetation at this location consists of manicured Amec Foster Wheeler Project No. LY17160440 11 multipleprojstreamstudyhabitatrpt_032917.docx lawn, an unidentified species of poplar tree, shore pine (>10 inches DBH), and blackberries (Appendix C, Photos 38 to 40). 2.3 ECOLOGICAL F UNCTION Riparian habitats have important ecological functions other than providing habitat for birds and other wildlife. Healthy riparian vegetation protects banks from erosion, influences in-channel aquatic habitats, maintains favorable water temperature for fish through shading, filters runoff, and provides nutrients. Riparian vegetation creates meanders, increases habitat complexity, and can protect against scour during severe storm events. Riparian habitats link upland and aquatic habitats. Upland habitats have a critical role in watershed function and affect riparian and aquatic habitats, particularly in drier, low-elevation sites. The riparian zone along the east bank of the LCR adjacent to and within 100 feet upstream and downstream of the two Boeing project sites located on the east side of the LCR is a relatively narrow vegetated band consisting of trees, shrubs, and manicured lawn. A paved pedestrian trail occurs in this area, as well. A number of invasive species also were observed, as discussed in Section 2.2, above. The riparian zone along the west bank of the LCR adjacent to and 100 feet upstream and downstream of the Gate D-50 project site located on the west side of the LCR consists of almost no vegetation. There are a few small alder and willow trees located more than 100 feet south of the proposed project site and some unidentified grass species. The west bank in this area of the LCR consists primarily of riprap and is separated from the Gate D-50 project site by an 8-foot-high concrete, flood-control wall. The primary ecological functions provided by riparian vegetation along the east and west banks of the LCR within 100 feet upstream and downstream of the project sites include:  Nesting and foraging habitat for birds and small mammals,  Input of terrestrial insects from overhanging vegetation,  Input of allochthonous organic matter (via leaf fall),  Limited erosion control, and  Limited habitat complexity. The LCR is a manmade channel created in 1912 when the river was diverted as a tributary to the former Black River directly to Lake Washington. The LCR is channelized and substantially altered, so that there is very limited riparian area to provide all of the potential ecological functions of an unaltered habitat. Riparian vegetation provides very little, if any, shading to the LCR because of the Amec Foster Wheeler 12 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx dominance of small shrubs and the lack of large trees. Both banks of the river in the project areas are contained within levees and/or flood-control walls, so there is no potential for the creation of meanders or off-channel habitat. Because of extensive development along both banks of the river in the project area (Boeing to the east and west and the Renton Municipal Airport to the west), there is little, if any, transition between riparian and upland habitats. 2.4 FISH AND W ILDLIFE This section addresses fish and wildlife species that may use the LCR in the vicinity of the project site. 2.4.1 Mammals No mammals were observed during the site visit; however, signs of recent beaver activity were noted on the east bank just south of Boeing’s North Bridge (Appendix A, Photos 14, 15, 16, and 17). Given the level of development in the project area, it is likely that, other than beaver, only small mammals such as squirrels, mice, rats, voles, moles, raccoons, opossums, muskrats, and river otters use the riparian areas along the LCR shoreline adjacent to and within 100 feet upstream and downstream of the project areas. Richter and Azous (1997), conducting small-mammal surveys in a wetland along the LCR, reported 13 species of mammals (Table 1). These, as well as other small mammals common to the Puget lowlands, may occur along the LCR adjacent to the project site. 2.4.2 Birds Several bird species were observed during the site visit, including American coot (Fulica Americana), American crow (Corvus brachyrhynchos), American robin (Turdus migratorius), bald eagle (Haliaeetus leucocephalus), an immature gull species (Larus spp.),dark-eyed junco (Junco hyemalis), European starling (Sturnus vulgaris), mallard ducks (Anas platyrhynchos), red-breasted merganser (Mergus serrator), and several unidentified songbird species. Richter and Azous (1997) conducted bird surveys in a wetland of the LCR between late May and mid-June in 1988, 1989, 1991, 1992, and 1995 to determine distribution and relative abundance. They reported 58 species of birds (Table 2). It is likely that these, as well as other species of birds common to the Puget lowlands, nest or forage in the project vicinity. 2.4.3 Amphibians and Reptiles No amphibians or reptiles were observed during the site visits; however, it is likely that amphibian (e.g., Anurans) and reptile species (e.g., turtles) found in the Lake Washington basin may use the areas within the site vicinity. Richter and Azous (1997) reported the occurrence of six amphibian species in the LCR: Amec Foster Wheeler Project No. LY17160440 13 multipleprojstreamstudyhabitatrpt_032917.docx  Ensatina (salamander) (Ensatina eschscholtzii),  Long-toed salamander (Ambystoma macrodactylus),  Northwestern salamander (A. gracile),  Pacific tree frog (Pseudoacris regilla),  Red-legged frog (Rana aurora), and  Western red-backed salamander (Plethodon vehiculum). No information was located listing reptile species occurring along the LCR in the project vicinity; however, reptiles listed for King County (King County, 2008) that could occur in the project vicinity include:  Common garter snake (Thamnophis sirtalis),  Northern alligator lizard (Elgaria coerulea),  Northwestern garter snake (T. ordinoides),  Painted turtle (Chrysemys picta),  Rubber boa (Charina bottae),  Slider (Trachemys scripta),  Western fence lizard (Sceloporus occidentalis), and  Western terrestrial garter snake (T. elegans). 2.4.4 Fish No fish were observed in the LCR adjacent to the project sites during the site visit. The Lake Washington system, including the LCR adjacent to the project site, hosts many fish species, including five salmonid species: Chinook salmon (Oncorhynchus tshawytscha), coho salmon (O. kisutch), sockeye/kokanee salmon (O. nerka), coastal cutthroat trout (O. clarki clarki), and steelhead/rainbow trout (O. mykiss). Anadromous forms of each of these species use the Cedar River system as migratory, forage, nursery, and spawning habitat, so individuals are present in the river both as adults during migrations to spawning grounds and as juveniles (Kerwin, 2001). All of these species occur seasonally in the LCR adjacent to the project site. Additionally, there have been isolated reports of coastal/Puget Sound bull trout (Salvelinus confluentus) occurring in the Lake Washington system; however, it is believed that few bull trout occur in the Lake Washington system, if they occur at all. Puget Sound Chinook salmon, Puget Sound steelhead trout, and bull trout are federally-listed species under the Endangered Species Act. Amec Foster Wheeler 14 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx Nonanadromous forms of winter steelhead (rainbow trout), sockeye (kokanee), and cutthroat trout may also occur in the LCR. Resident rainbow trout spend their entire life in the Lake Washington system. The resident rainbow trout population was sustained with hatchery plants because they rarely successfully reproduce in Water Resource Inventory Area 8; however, releases of hatchery rainbow trout have been all but eliminated. Nonanadromous coastal cutthroat trout also occur in the Lake Washington system and are much more abundant than the anadromous form. Kokanee salmon is the freshwater, resident form of O. nerka. Some progeny from the parents of anadromous sockeye may also remain in Lake Washington for all or a portion of their lives (resident/anadromous sockeye) (Kerwin, 2001). The largest single population of adfluvial bull trout in western Washington is found above Cedar Falls in the upper Cedar River watershed. It is believed that a small number of bull trout pass through the reservoir and downstream hydroelectric facilities to the river reaches below Cedar Falls. However, it is apparently not sufficient to support the establishment of bull trout populations under the current ecological conditions (Corps, 2002). Native char, presumably bull trout, have been observed in the fish ladder viewing pool at the Hiram M. Chittenden Locks as recently as 1997, while isolated reports of native char being caught in or around Lake Washington occur every few years. A large juvenile char, again, presumably a bull trout (~250 millimeter, 3 year old), was caught in the LCR in July 1998. An adult char was also caught in the LCR in April of 1993 (Corps, 2002). Based on this information, occurrence of bull trout in the LCR adjacent to the project site is expected to be extremely limited, if they occur at all. Fish exclusion surveys conducted by Amec Foster Wheeler biologists in June 2013 and June 2014 as part of Boeing’s North Bridge Replacement project on the LCR identified juvenile Chinook and coho salmon, as well as juvenile steelhead/rainbow trout. Other fish species identified during these surveys included slimy sculpin (Cottus asper), three-spined stickleback (Gasterosteus aculeatus), and ammocoetes of an unidentified lamprey species (Petromyzontidae). Species endemic to the Lake Washington system include the northern pike minnow (Ptychocheilus oregonensis), peamouth (Mylocheilus caurinus), sculpins (Cottus spp.), and longfin smelt (Spirinchus thaleichthys) (Weitkamp et al., 2000; Wydoski and Whitney, 2003). Twenty-four non-native fish species (Table 3) have been identified in the Lake Washington/Lake Union system. A number of these species are now believed to be no longer present in the system. Some of these species are known to Amec Foster Wheeler Project No. LY17160440 15 multipleprojstreamstudyhabitatrpt_032917.docx prey on juvenile salmon (e.g., smallmouth bass) while others are potential competitors with juvenile salmonids for food (Kerwin, 2001). 2.5 MEASURES TO P ROTECT T REES AND V EGETATION The proposed projects will be confined to the Boeing property and will not occur in areas with existing trees or riparian vegetation. No direct or indirect impacts to riparian vegetation or trees will occur as a result of the proposed projects; therefore, no measures to protect vegetation or trees have been incorporated into the work plan. 2.6 NO N ET L OSS OF E COLOGICAL F UNCTION The project will result in no net loss of ecological function in the riparian zone of the LCR adjacent to and 100 feet upstream and downstream of the project sites. There will be no change in the area of impervious surfaces within the shoreline zone. Amec Foster Wheeler 16 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx (This page intentionally left blank) Amec Foster Wheeler Project No. LY17160440 17 multipleprojstreamstudyhabitatrpt_032917.docx 3.0 HABITAT DATA REPORT The habitat data report, as required by the City of Renton and described in RMC 4-8-120C, will provide pertinent habitat and ecological function information for the immediate project site where the proposed project is to occur. Sections 3.1 through 3.6 of the report will discuss following:  The layers, diversity and variety of habitat found on the site;  The location of any migration or movement corridors;  The species typically associated with the cover types, including an identification of any critical wildlife species that might be expected to be found;  Identification of any areas that have been previously disturbed or degraded by human activity or natural processes;  A summary of existing habitat functions and values; and  A summary of proposed habitat alterations and impacts and proposed habitat management program. 3.1 HABITAT D IVERSITY The lower Cedar River (LCR) downstream of I-405 (approximately 1.6 miles) is an artificial channel created early in the 20th century and is completely constrained between levees and revetments. This reach was regularly dredged to prevent flooding from the time of its completion in 1912 until the mid-1970s. Portions of the reach were again dredged in 1999 for the first time since the mid-1970s. Flood-control dredging was conducted during the summer of 2016. In-stream habitat in the reach is almost entirely glide, with little habitat complexity. Land uses prevent floodplain connectivity and have eliminated the potential for re-connection with a natural floodplain or the establishment of a riparian corridor. Channelization and existing land uses also prevent significant large woody debris from accumulating in the channel. The reach is also very low-gradient and depositional, and the substrates have high levels of fine sediments (Corps, 2004; Parametrix and Adolfson, 2010). The shoreline along the LCR adjacent to the project site consists of developed property belonging to Boeing and the City of Renton. With realignment of the Cedar River into Lake Washington in 1912, the zone of sediment deposition was localized through the City of Renton (Perkins, 1994). The vast majority, if not all, of the non- suspendable sediment load is now deposited along this reach because Lake Washington lies at the river’s mouth. With the path of the river fixed by armored banks, progressive infilling of the channel resulted. Sediment is continually deposited in the downstream 2 miles of the river and in an enlarging delta in Lake Washington. Amec Foster Wheeler 18 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx Aquatic habitat within the LCR adjacent to the project site consists of a low relief benthic habitat composed of small cobbles with some gravel and no boulders. Large woody debris in the stretch of the LCR adjacent to the project site is extremely limited (Appendix A, Photos 14 and 15). River discharge at the time of the site visits in May and November 2014 was approximately 1,000 cubic feet per second and 320 cubic feet per second during the May 2015 visit (USGS, 2017). Channelization of the LCR has eliminated meanders within the lower river, such that the lower 1.6 miles of river consists of a uniform glide habitat with a nearly complete absence of riffles and pools. Habitat diversity along the LCR adjacent to the project site is extremely limited. 3.2 MIGRATION C ORRIDORS A query of the Washington Department of Fish and Wildlife’s Priority Habitat and Species database (http://wdfw.wa.gov/mapping/phs/) identified five salmonid species that use the LCR as a migration corridor:  Chinook salmon;  Coho salmon;  Sockeye salmon;  Steelhead and rainbow trout; and  Coastal cutthroat trout. Two of the above species, Puget Sound Chinook salmon and Puget Sound steelhead trout, are listed as threatened under the Endangered Species Act. Bull trout, a member of the char family, may also be found in the LCR and is also listed as threatened under the Endangered Species Act. Population status information and extent of use of this area is currently unknown. Adult and subadult size individuals have been observed infrequently in the LCR (below Cedar Falls), Lake Washington, and at the Locks. No spawning activity or juvenile rearing has been observed and no distinct spawning populations are known to exist in Lake Washington outside of the upper Cedar River above Lake Chester Morse (not accessible to bull trout within Lake Washington) (NOAA-Fisheries and USFWS, 2008). It is unlikely that bull trout use the Cedar River as a migratory corridor. 3.3 SPECIES AND C OVER T YPES The almost complete absence of riparian vegetation along the west bank of the LCR and the relatively narrow zone of riparian vegetation along the east bank adjacent to the project sites and the highly developed shorelines along both banks of the LCR severely limit habitat availability and use by Amec Foster Wheeler Project No. LY17160440 19 multipleprojstreamstudyhabitatrpt_032917.docx multiple plant and animal species. The concrete flood-control wall on the west bank of the LCR adjacent to the Gate D-50 project site severely limits the width of the riparian zone and eliminates the transition zone from riparian to terrestrial habitats. Typical plant and animal assemblages and associations that would be expected along the riparian corridor of the LCR are, for the most part, very limited or absent along the stretch of the LCR adjacent to the proposed project sites. A query of the Washington Department of Natural Resources’ Natural Heritage Program online database (http://www.dnr.wa.gov/ResearchScience/HowTo/ConservationRestoration/Pages/ amp_nh_data_order.aspx) did not identify any plant or terrestrial animal species of special concern in the vicinity of the project site. Critical wildlife species occurring at the project site include those salmonids identified in Section 2.4.4 above. 3.4 IDENTIFICATION OF D ISTURBED A REAS The entire project area is highly developed and disturbed. As stated in Section 3.1, the lower 1.6 miles of the LCR is an artificially-created channel with extensive development along both banks. The three project sites are covered in asphalt and/or cement and have various structures, such as office buildings and aircraft hangers. 3.5 EXISTING H ABITAT V ALUES AND F UNCTIONS The LCR adjacent to the project site has very limited habitat value and is low functioning. A combination of two habitat assessment methods was used to provide a qualitative assessment of the existing habitat values and functions. These habitat assessment methods were the U.S. Environmental Protection Agency’s (EPA’s) Rapid Bioassessment Protocols for Use in Wadeable Streams and Rivers (Barbour et al., 1999) and the U.S. Forest Service’s Stream Inventory Handbook: Levels I and II (USFS, 2010). Both methods incorporate the use of physicochemical and biological parameters to assess habitat value and functionality. The EPA’s Rapid Bioassessment Protocols incorporates both benthic invertebrate and fish assemblages’ data in evaluating habitat value and function. For the purposes of this project, neither benthic invertebrate nor fish assemblage data were collected as part of the evaluation process due to the necessity of applying for and receiving the necessary permits to gather such data. The habitat assessment is based on physicochemical conditions observed at the project site: Amec Foster Wheeler 20 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx  Temperature,  Water quality,  Reach sinuosity,  Vegetative conditions of the stream banks and the riparian zone, and  Condition of the floodplain (e.g., accessibility from the bank, overflow, and size). Each of the above parameters is discussed below. 3.5.1 Temperature Mean monthly water temperatures in degrees Celsius in the LCR at Renton for the period of February 1992 through December 2016 (USGS, 2017) are as follows:  January – 6.1  February – 6.4  March – 7.6  April – 9.6  May – 11.6  June – 13.4  July – 15.7  August – 16.0  September – 13.7  October – 11.1  November – 8.2  December – 6.3 The warmest water temperatures occur during the months of June, July, August, and September; however, even the highest mean monthly temperatures are compliant with Washington State aquatic life temperature criteria (Table 4), with the exception of the char spawning and rearing beneficial use. Char (e.g., bull trout) do not spawn in the LCR and it is highly unlikely that they use the LCR as rearing habitat. 3.5.2 Water Quality No site-specific water quality data were found for the project site; however, water quality monitoring has been conducted in south Lake Washington by the Washington State Department of Ecology. Washington State’s Water Quality Assessment (303[d] & 305[b] Report) (Ecology, 2012) identified exceedances of water quality standards for temperature, pH, dissolved oxygen, and fecal coliforms in the LCR. No chemical exceedances of state water quality criteria were identified for the LCR adjacent to the project site. 3.5.3 Reach Sinuosity As discussed above, the lower 1.6 miles of the LCR are channelized and much of the shoreline on both banks is restrained by bulkheads. There is no sinuosity within the entire 1.6 miles of the LCR. Amec Foster Wheeler Project No. LY17160440 21 multipleprojstreamstudyhabitatrpt_032917.docx Stream sinuosity can provide increased habitat complexity through the creation of pools, riffles, and glides, as well as the creation of off-channel habitat. 3.5.4 Vegetative Conditions As described previously, riparian vegetation is sparse along the both banks of the LCR within 100 feet of the project site. As such, habitat diversity and functionality along this reach of the LCR is severely limited. 3.5.5 Floodplain Condition The LCR is an artificially-created channel confined by levees and bulkheads on each bank. Except in extreme discharge conditions, the LCR has very little connectivity with its floodplain and virtually no potential for formation of off-channel habitat within the floodplain. Because of the low gradient of the LCR, it functions as a sediment depositional zone. The City of Renton and the U.S. Army Corps of Engineers periodically dredges the LCR for flood-control purposes. The City of Renton conducted flood-control dredging during the summer of 2016. 3.5.6 Habitat Values and Functions at the Project Site A qualitative assessment of the LCR adjacent to the project site indicates that it provides very low habitat value and function due primarily to the sparse riparian vegetation and habitat complexity. 3.6 HABITAT A LTERATIONS AND I MPACTS AND P ROPOSED H ABITAT M ANAGEMENT P ROGRAM The project will not involve any in-water components or work below the OHWM, nor will any portion of the proposed projects occur in the riparian zone of the LCR. The relocation of two lights on the guard shack as part of the Gate D-50 task will not result in light impingement on the adjacent LCR. The guard shack is located approximately 150 feet west of the west bank of the LCR. An 8-foot-high concrete flood-control wall is also located just above the west bank of the LCR. The proposed guard shack lighting will be shielded, directed downward and away from the LCR, and will be 7 feet above the ground, a foot below the height of the flood control wall. The proposed guard shack lighting will not result in any light impingement on the LCR. As a best management practice, any soil piles resulting from excavation activities will be covered with an impervious material, such as visqueen, to minimize and avoid erosion and to prevent silt from entering the LCR and degrading water quality. Given the distances of the project sites from the adjacent LCR, as well as the intervening Cedar River Trail Park with manicured lawns, vegetated Amec Foster Wheeler 22 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx areas, paved roadways, and paved pedestrian pathways, it is highly unlikely that any runoff from the construction activities at the proposed project would reach the LCR. The three proposed tasks will not change or adversely affect existing ecological functions of the riparian habitat along the LCR. No habitat management or mitigation programs are required for the proposed tasks and none are proposed. Amec Foster Wheeler Project No. LY17160440 23 multipleprojstreamstudyhabitatrpt_032917.docx 4.0 REFERENCES Barbour, M.T., Gerritsen, J., Snyder, B.C., and Stribling, J.B. 1999. Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers. U.S. Environmental Protection Agency, Office of Water, EPA 841-B-99-002, Washington, D.C. Corps – see U.S. Army Corps of Engineers Kerwin, J. 2001. Salmon and Steelhead Habitat Limiting Factors Report for the Cedar-Sammamish Basin (Water Resource Inventory Area 8). Washington Conservation Commission, Olympia. King County. 2008. King County Biodiversity Report 2008. King County, Seattle, Washington, http://www.kingcounty.gov/environment/animalsAndPlants/biodiversity/king-county- biodiversity-report.aspx (accessed September 1, 2009). National Oceanic and Atmospheric Administration, National Marine Fisheries Service and the U.S. Fish and Wildlife Service (NOAA-Fisheries and USFWS). 2008. Endangered Species Act – Section 7 Consultation Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation. The I-405 Tukwila to Renton Improvement Project (I-5 to SR 169 – Phase 2) Lower Cedar River, Cedar River Sixth Field HUC: 171100120106, 171100120302, King County, Washington. NOAA-Fisheries and USFWS, Lacey, Washington, https://pcts.nmfs.noaa.gov/pls/pcts-pub/sxn7.pcts_ upload.download?p_file=F13441/200704219_405_trip_03-03-2008.pdf (accessed May 19, 2012). Parametrix and Adolfson Associates, Inc. (Parametrix and Adolfson). 2010. City of Renton Shoreline Master Program Update Restoration Plan. Prepared for the City of Renton, Washington, http://rentonwa.gov/uploadedFiles/Business/EDNSP/planning/ 4.3%20Final%20Restoration%20Plan%20(june-10).pdf?n=2474 (accessed April 13, 2012). Perkins, S.J. 1994. The shrinking Cedar River – channel changes following flow regime regulation and bank armoring, in Proceedings of Effects of Human-Induced Changes on Hydrologic Systems. American Water Resources Association 1994 Annual Summer Symposium, p. 649-658. Richter, K.O., and Azous, A.L. 1997. Amphibian distribution, abundance, and habitat use, in Azous, A.L., and Horner, R.R. (eds.), Wetlands and Urbanization – Implications for the Future, final report. Puget Sound Wetlands and Stormwater Management Research Program, Washington State Department of Ecology, Olympia, King County Water and Land Resources Division, Seattle, Washington, and University of Washington, Seattle, http://your.kingcounty.gov/dnrp/ library/archive-documents/wlr/wetlands-urbanization-report/wet-rept.pdf (accessed September 1, 2009). U.S. Army Corps of Engineers (Corps). 2002. Montlake Cut Slope Stabilization Project Environmental Assessment Biological Evaluation – Lake Washington Ship Canal, Seattle, Washington. Corps, Seattle District, Seattle, Washington. Amec Foster Wheeler 24 Project No. LY17160440 multipleprojstreamstudyhabitatrpt_032917.docx ———. 2004. Cedar River at Renton Flood Damage Reduction Operation and Maintenance Manual – Cedar River Section 205 (Renton, Washington). U.S. Army Corps of Engineers, Seattle District, Seattle, Washington. U.S. Forest Service (USFS). 2010. Stream Inventory Handbook: Levels I and II (Version 2.10). USFS, Pacific Northwest Region, Region 6, Portland, Oregon. USGS (U.S. Geological Survey). 2017. USGS Surface-Water Monthly Statistics for Washington – USGS 12119000 Cedar River at Renton. Department of the Interior, USGS, National Water Information System, https://nwis.waterdata.usgs.gov/wa/nwis/uv/?cb_all_00010_00060_00065=on&cb_00010=on& cb_00060=on&cb_00065=on&format=gif_default&period=&begin_date=2013-05- 27&end_date=2016-12-31&site_no=12119000 (accessed February 23, 2017). Washington State Department of Ecology (Ecology). 2008. Washington State’s 2008 Water Quality Assessment (303[d] & 305[b] Report). Ecology, Olympia, http://www.ecy.wa.gov/programs/ wq/303d/2008/index.html (accessed April 15, 2012). ———. 2012. Supplemental Aquatic Life Criteria Information. Ecology, Water Quality Program, Olympia, http://www.ecy.wa.gov/programs/wq/swqs/AquaticLifeTempSupp.html#timeframes (accessed December 15, 2012). Weitkamp, D.E., Ruggerone, G.T., Sacha, L., Howell, J., and Bachen, B. 2000. Factors Affecting Chinook Populations – Background Report. City of Seattle, Seattle, Washington. Wydoski, R.S., and Whitney, R.R. 2003. Inland Fishes of Washington. American Fisheries Society, Bethesda, Maryland, and University of Washington Press, Seattle. TABLES p:\boeing renton\ly17160440 multiple project stream study\reports\streamstudy\tables_figures\multipleprojstreamstudytable s_032917.docx Amec Foster Wheeler Page 1 TABLE 1 SMALL MAMMALS REPORTED TO OCCUR ALONG THE LOWER CEDAR RIVER¹ Multiple Projects Renton, Washington Species Common Name and Scientific Name (Genus species) Creeping vole Microtus oregoni Montane shrew Sorex monticolus Deer mouse Peromyscus maniculatus Shrew-mole Neurotrichus gibbsii Ermine Mustela ermine Southern red-backed vole Clethryonomys gapperi Forest deer mouse Peromyscus oreas Townsend’s chipmunk Tamias townsendii Long-tailed vole Microtus longicaudus Trowbridge’s shrew Sorex trowbridgei Marsh shrew Sorex bendirei Vagrant shrew Sorex vagrans Masked shrew Sorex cinereus Note(s) 1. Source: Richter and Azous, 1997. Amec Foster Wheeler Page 2 p:\boeing renton\ly17160440 multiple project stream study\reports\streamstudy\tables_figures\multipleprojstreamstudytables_032917.docx TABLE 2 BIRDS REPORTED TO OCCUR ALONG THE LOWER CEDAR RIVER1 Multiple Projects Renton, Washington Species Common Name and Scientific Name (Genus species) American crow Corvus brachyrhynchos Northern pygmy owl Glaucidium gnoma American goldfinch Carduelis tristis Orange-crowned warbler Vermivora celata American robin Turdus migratorius Pine siskin Carduelis pinus Black-capped chickadee Parus atricapillus Pacific-slope flycatcher Empidonax difficilis Belted kingfisher Ceryle alcyon Purple finch Carpodacus purpureus Bewick’s wren Thryomanes bewickii Red-breasted nuthatch Sitta Canadensis Brown-headed cow bird Molothrus ater Red-breasted sapsucker Sphyrapicus ruber Black-headed grosbeak Pheucticus melanocephalus Red crossbill Loxia curvirostra Brewer’s blackbird Euphagus cyanocephalus Red-eyed vireo Vireo olivaceus Brown creeper Certhia Americana Rufous-sided towhee Pipilo erythrophthalmus Black-throated gray warbler Dendroica nigrescens Ruffed grouse Bonasa umbellus Bushtit Psaltriparus minimus Ruby-crowned kinglet Regulus calendula Chestnut-backed chickadee Parus rufescens Red-winged blackbird Agelaius phoeniceus Cedar waxwing Bombycilla cedrorum Sora Porzana Carolina Cooper’s hawk Accipiter cooperii Song sparrow Melospiza melodia Common raven Corvus corax Sharp-shinned hawk Accipiter striatus Common yellow throat Geothlypis trichas Steller’s jay Cyanocitta stelleri Dark-eyed junco Junco hyemalis Swainson’s thrush Catharus ustulatus Downy woodpecker Picoides pubescens Townsend’s warbler Setophaga townsendi European starling Sturnus vulgaris Vaux’s swift Chaetura vauxi Evening grosbeak Coccothraustes vespertinus Violet-green swallow Tachycineta thalassina Fox sparrow Passerella iliaca Virginia rail Rallus limicola Great blue heron Ardea herodias Warbling vireo Vireo gilvus Golden-crowned kinglet Regulus satrapa Western tanager Piranga ludoviciana Hairy woodpecker Picoides villosus Willow flycatcher Empidonax traillii Hermit thrush Catharus guttatus Wilson’s warbler Cardellina pusilla Marsh wren Cistothorus palustris Winter wren Troglodytes hiemalis MacGillivray’s warbler Geothlypis tolmiei Wood duck Aix sponsa Northern flicker Colaptes auratus Yellow warbler Dendroica petechia Note(s) 1. Source: Richter and Azous, 1997. p:\boeing renton\ly17160440 multiple project stream study\reports\streamstudy\tables_figures\multipleprojstreamstudytable s_032917.docx Amec Foster Wheeler Page 3 TABLE 3 NON-NATIVE FISH SPECIES INTRODUCED INTO THE LAKE WASHINGTON/LAKE UNION SYSTEM¹ Multiple Projects Renton, Washington Common Name Scientific Name Status American shad Alosa sapidissima Uncommon strays Atlantic salmon Salmo salar Can exceed 1,000 per year Black bullhead Ictalurus melas Extinct Black crappie Pomoxis nigromaculatus Common Bluegill Lepomis macrocheilus Common Brook trout Salvelinus fontinalis Rarely caught Brown bullhead Ictalurus nebulosus Rare, may be extinct Brown trout Salmo trutta No observed reproduction Channel catfish Ictalurus punctatus Rarely caught Cherry salmon Oncorhynchus masou Extinct Common carp Cyprinus carpio Abundant Fathead minnow Pimephales notatus Unknown Goldfish Carassius auratus Intermittent Grass carp Ctenopharengodon idella Triploids only Lake trout Salvelinus namaycush Extinct Lake whitefish Coregonus clupeaformis Extinct Largemouth bass Micropterus salmoides Common Pumpkinseed sunfish Lepomis gibbosus Abundant Smallmouth bass Micropterus dolomieui Common Tench Tinca tinca Abundant Warmouth Lepomis gulosus No observed reproduction Weather loach Misgurnus angillicaudatus No observed reproduction White crappie Pomoxis annularis Uncommon Yellow perch Perca flavescens Abundant Note(s) 1. Source: Kerwin, 2001. Amec Foster Wheeler Page 4 p:\boeing renton\ly17160440 multiple project stream study\reports\streamstudy\tables_figures\multipleprojstreamstudytables_032917.docx TABLE 4 DIFFERENT AQUATIC LIFE USES AND THEIR ASSOCIATED NUMERIC TEMPERATURE CRITERIA¹ Multiple Projects Renton, Washington Beneficial Use Temperature2 (ºC) Char Spawning and Rearing 12 Core Summer Salmonid Habitat 16 Salmonid Spawning, Rearing, and Migration 17.5 Salmonid Rearing and Migration only 17.5 Note(s) 1. Source: Ecology, 2008. 2. Based on the 7-day average of the daily maximum temperatures. Abbreviation(s) ºC = degrees Celsius FIGURES MultipleProjStreamStudyFigures_032917.xlsxDate: 03/24/17By: resProj. No. LY17160440Figure 1VICINITY AND SITE MAPSStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA MultipleProjStreamStudyFigures_032917.xlsxAERIAL PHOTO OF PROJECT LOCATIONS (in red) Date: 03/29/17 Proj. No. LY17160440 Figure 2 Standard Stream Study Narrative and Habitat Data Report - Multiple Projects By: res MultipleProjStreamStudyFigures_032917.xlsxBLDG. 4-42 SEWAGE LIFT STATION, PLAN VIEW Date: 03/29/17 Proj. No. LY17160440 Figure 3 Standard Stream Study Narrative and Habitat Data Report - Multiple Projects By: res MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 4GATE D-50 FENCING AND BARRIERS, PLAN VIEWStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 5GATE D-50 PAVING AND GRADING, PLAN VIEWStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 6GATE D-50 GUARD HOUSE FLOOR PLAN, PLAN VIEWStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WA MultipleProjStreamStudyFigures_032917.xlsxDate: 03/29/17By: resProj. No. LY17160440Figure 7GATE D-50 GUARD HOUSE EXTERIOR ELEVATIONSStandard Stream Study Narrative andHabitat Data Report - Multiple ProjectsRenton, WA MultipleProjStreamStudyFigures_032917.xlsxDate: 03/24/17By: RESProj. No. LY17160440Figure 8APRON D FUEL SPILL CONTAINMENT PLANStandard Stream Study Narrative andHabitat Data Report - Multiple ProjectsRenton, WA APPENDIX A Bldg. 4-42 Sewage Lift Station Photo Log Appendix_A-B-C_PhotoPointFigures_032917.xlsxBy: res Phase No.: 01 Project: LY17160440 PHOTO POINTS ADJACENT TO BLDG. 4-42 Standard Stream Study Narrative and Habitat Data Report - Multiple Projects Renton, WA Date: 03/29/17 Figure A-1 (This page intentionally left blank) APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-1 appendix a photolog_032917.docx Photo 1 N @ ramp – Blackberry, reed canarygrass Photo 2 S @ ramp – Alder tree, blackberry, unidentified shrub, grasses, and weeds APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-2 Project No. LY17160440 appendix a photolog_032917.docx Photo 3 W @ 100 ft N – Alder tree Photo 4 S @ 100 ft N – Pine tree >10 ft DBH APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-3 appendix a photolog_032917.docx Photo 5 N @ 100 ft N – Alder tree >10 inches DBH Photo 6 W @ 100 ft N – Flowering currant in foreground and alder tree in background APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-4 Project No. LY17160440 appendix a photolog_032917.docx Photo 7 W @ 200 ft N – Mature willow Photo 8 N @ 200 ft N – Blackberry and willow APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-5 appendix a photolog_032917.docx Photo 9 S @ 200 ft N – Mature willow Photo 10 200 ft N – Bulkhead APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-6 Project No. LY17160440 appendix a photolog_032917.docx Photo 11 W @ 300 ft N – Scot’s broom and nootka rose Photo 12 N @ 300 ft N – Alder tree APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-7 appendix a photolog_032917.docx Photo 13 S @ 300 ft N – Big leaf maple Photo 14 NW +300 ft N – Beaver activity near North Bridge APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-8 Project No. LY17160440 appendix a photolog_032917.docx Photo 15 NW +300 ft N – Beaver activity south of North Bridge Photo 16 SW +300 ft N – Beaver activity south of North Bridge APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-9 appendix a photolog_032917.docx Photo 17 NW +300 ft N – Beaver activity south of North Bridge Photo 18 S @ ramp – Unidentified shrub in foreground; shore pine in background APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-10 Project No. LY17160440 appendix a photolog_032917.docx Photo 19 S @ ramp – Unidentified poplar species Photo 20 W @ 100 ft S – Alder trees APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-11 appendix a photolog_032917.docx Photo 21 N @ 100 ft S – Alder trees; unidentified shrub Photo 22 S @ 100 ft S – Alder tree in background; flowering currant to the right APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-12 Project No. LY17160440 appendix a photolog_032917.docx Photo 23 W @ 200 ft S – Unidentified tree (foreground); shore pine (background) Photo 24 N @ 200 ft S – Unidentified shrub APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-13 appendix a photolog_032917.docx Photo 25 S @ 200 ft S – Red osier dogwood Photo 26 W @ 300 ft S – Red osier dogwood APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-14 Project No. LY17160440 appendix a photolog_032917.docx Photo 27 N @ 300 ft S – Red osier dogwood Photo 28 S @ 300 ft S – Red osier dogwood APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 A-15 appendix a photolog_032917.docx Photo 29 N @ 300 ft S – Manicured lawn adjacent to river APPENDIX A BLDG. 4-42 SEWAGE LIFT STATION PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler A-16 Project No. LY17160440 appendix a photolog_032917.docx (This page intentionally left blank) APPENDIX B Gate D-50 Photo Log Appendix_A-B-C_PhotoPointFigures_032917.xlsxPhase No.: 01Project: LY17160440PHOTO POINTS ADJACENT TO THE GATE D-50 MODIFICATIONS PROJECT SITEStandard Stream Study Narrative and Habitat Data Report - Multiple ProjectsRenton, WADate: 03/29/17By: resFigure B-1 (This page intentionally left blank) APPENDIX B GATE D-50 PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 B-1 appendix b photolog_032917.docx Photo 1 W @ Gate D-50 – Looking at riprapped west shoreline and flood control wall Photo 2 N @ adjacent to Gate D-50 – Looking at riprapped west bank and flood control wall APPENDIX B GATE D-50 PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler B-2 Project No. LY17160440 appendix b photolog_032917.docx Photo 3 S @ adjacent to Gate D-50 – Looking at riprapped west bank and flood control wall Photo 4 W @ 100 ft S adjacent to Gate D-50 – Note small alder trees on west shoreline APPENDIX B GATE D-50 PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 B-3 appendix b photolog_032917.docx Photo 5 N @ 100 ft S adjacent to Gate D-50 Photo 6 S @ 100 ft S adjacent to Gate D-50 – Note small alder trees on west bank APPENDIX B GATE D-50 PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler B-4 Project No. LY17160440 appendix b photolog_032917.docx Photo 7 N @ (from Logan Street Bridge) Gate D-50 – Note small alder trees on west bank Photo 8 W @ 100 ft N adjacent to Gate D-50 APPENDIX B GATE D-50 PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 B-5 appendix b photolog_032917.docx Photo 9 N @ 100 ft N adjacent to Gate D-50 Photo 10 S @ 100 ft N adjacent to Gate D-50 APPENDIX B GATE D-50 PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler B-6 Project No. LY17160440 appendix b photolog_032917.docx (This page intentionally left blank) APPENDIX C Apron D Fuel Spill Containment Photo Log Appendix_A-B-C_PhotoPointFigures_032917.xlsxPhase No.: 01 Project: LY17160440 PHOTO POINTS ADJACENT TO APRON D FUEL SPILL CONTAINMENT SITE Standard Stream Study Narrative and Habitat Data Report - Multiple Projects Renton, WA Date: 03/29/17 By: res Figure C-1 (This page intentionally left blank) APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-1 appendix c photolog_032917.docx Photo 1 W @ N Boundary Apron D – Unidentified shrub in foreground; forsythia in background Photo 2 N @ N Boundary Apron D – Forsythia to the left; unidentified shrub to the right APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-2 Project No. LY17160440 appendix c photolog_032917.docx Photo 3 S @ N Boundary Apron D – Unidentified poplar trees to the left; forsythia to the right Photo 4 W @ 100 ft N of N Boundary Apron D – Forsythia in background APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-3 appendix c photolog_032917.docx Photo 5 N @ 100 ft N of N Boundary Apron D – Forsythia at left; unidentified shrubs in foreground Photo 6 S @ 100 ft N of N Boundary Apron D – Forsythia at right; unidentified poplars at left APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-4 Project No. LY17160440 appendix c photolog_032917.docx Photo 7 W @ 100 ft S of N Boundary Apron D – Unidentified pine species Photo 8 N @ 100 ft S of N Boundary Apron D – Unidentified poplar species APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-5 appendix c photolog_032917.docx Photo 9 S @ 100 ft S of N Boundary Apron D – Unidentified poplar species Photo 10 W @ 100 ft S of N Boundary Apron D – Near LCR, ferns and unidentified trees APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-6 Project No. LY17160440 appendix c photolog_032917.docx Photo 11 N @ 100 ft S of N Boundary Apron D – Near LCR, forsythia and unidentified shrubs Photo 12 S @ 100 ft S of N Boundary Apron D – Near LCR, unidentified pine species APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-7 appendix c photolog_032917.docx Photo 13 W @ 200 ft S of N Boundary Apron D Photo 14 N @ 200 ft S of N Boundary Apron D – Unidentified shrubs and willows APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-8 Project No. LY17160440 appendix c photolog_032917.docx Photo 15 S @ 200 ft S of N Boundary Apron D – Unidentified pine and alder at right Photo 16 N @ 300 ft S of N Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-9 appendix c photolog_032917.docx Photo 17 S @ 300 ft S of N Boundary Apron D Photo 18 W @ 300 ft S of N Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-10 Project No. LY17160440 appendix c photolog_032917.docx Photo 19 N @ 300 ft S of N Boundary Apron D – Near LCR Photo 20 S @ 300 ft S of N Boundary Apron D – Near LCR APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-11 appendix c photolog_032917.docx Photo 21 E @ 400 ft S of N Boundary Apron D – Unidentified pine species Photo 22 W @ 400 ft S of N Boundary Apron D – Alder trees and unidentified shrubs APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-12 Project No. LY17160440 appendix c photolog_032917.docx Photo 23 N @ 400 ft S of N Boundary Apron D – Alder tree and unidentified pine and shrubs Photo 24 S @ 400 ft S of N Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-13 appendix c photolog_032917.docx Photo 25 E @ 500 ft S of N Boundary Apron D – Alder tree and unidentified shrubs Photo 26 N @ 500 ft S of N Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-14 Project No. LY17160440 appendix c photolog_032917.docx Photo 27 S @ 500 ft S of N Boundary Apron D Photo 28 W @ 500 ft S of N Boundary Apron D – Unidentified pine species APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-15 appendix c photolog_032917.docx Photo 29 N @ 600 ft S of N Boundary Apron D Photo 30 S @ 600 ft S of N Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-16 Project No. LY17160440 appendix c photolog_032917.docx Photo 31 W @ 600 ft S of N Boundary Apron D Photo 32 N @ 600+ ft (from South Bridge) S of N Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-17 appendix c photolog_032917.docx Photo 33 S @ 600+ ft (from South Bridge) S of N Boundary Apron D Photo 34 N @ S Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-18 Project No. LY17160440 appendix c photolog_032917.docx Photo 35 W @ S Boundary Apron D – Alder tree >10 inches DBH Photo 36 S @ S Boundary Apron D APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler Project No. LY17160440 C-19 appendix c photolog_032917.docx Photo 37 E @ 100 ft S of S Boundary Apron D Photo 38 W @ 100 ft S of S Boundary Apron D – Blackberry and willows APPENDIX C APRON D FUEL SPILL CONTAINMENT PHOTO LOG Multiple Projects Renton, Washington Amec Foster Wheeler C-20 Project No. LY17160440 appendix c photolog_032917.docx Photo 39 N @ 100 ft S of S Boundary Apron D Photo 40 S @ 100 ft S of S Boundary Apron D