Loading...
HomeMy WebLinkAboutEx12_Environmental_(SEPA)_ChecklistSEPA Environmental checklist (WAC 197-11-960) January 2023 Page 1 of 18 SEPA ENVIRONMENTAL CHECKLIST Purpose of checklist Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization, or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for applicants This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use “not applicable” or "does not apply" only when you can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision-making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for lead agencies Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of checklist for nonproject proposals For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B, plus the Supplemental Sheet for Nonproject Actions (Part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non-projects) questions in “Part B: Environmental Elements” that do not contribute meaningfully to the analysis of the proposal. EXHIBIT 12 RECEIVED Clark Close 08/18/2023 PLANNING DIVISION DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 2 of 18 A. Background Find help answering background questions 1. Name of proposed project, if applicable: Monroe Avenue NE Infiltration Facility 2. Name of applicant: City of Renton 3. Address and phone number of applicant and contact person: 1055 S Grady Way, Renton, WA 98057; Kevin Evans, krevans@rentonwa.gov 4. Date checklist prepared: August 15, 2023 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule (including phasing, if applicable): The project is scheduled to begin October 16, 2023. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. · Otak, Monroe Ave Critical Areas Memorandum, August 18, 2021 · Aspect, Environmental Site Assessment, Phase 1, June 9, 2021 · City of Renton, Phase 2 Geotechnical Evaluation for Potential Stormwater Facility, · Upper Balch Pit, July 9, 2021 · Otak, Monroe Avenue Stormwater Management Alternatives Analysis Memorandum, · August 11, 2020 · Otak, Field Work and Modeling Memorandum, January 8, 2021 DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 3 of 18 · Otak, Field Work and Modeling Memorandum, April 23, 2021 · Otak, Draft Technical Information Report, April 7, 2023 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. There are no known pending approvals of proposals that will directly affect this project. 10. List any government approvals or permits that will be needed for your proposal, if known. City of Renton, Construction permit City of Renton, Building permit 11. Give a brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) The project will provide flow control and water quality treatment of stormwater runoff for the 245- acre subbasin via new treatment and infiltration facilities. The bulk of project improvements consist of underground stormwater facilities, pipes, and structures that will reside below the new 14,300 SF maintenance access road and large grass field area. All permanent improvements to the project site itself will be located within the 3.00-acre permanent utility easement. The permanent utility easement will allow the City to access and maintain the new stormwater facilities from Monroe Ave NE in perpetuity. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The project is located in the Township 23N Range 5E Section 16 of the Public Land Survey System, and in the Cedar - Sammamish watershed - Water Resource Inventory Area (WRIA) 8. The site is located in the central portion of the Renton Highlands neighborhood, in Renton, Washington. The project site is bounded by Monroe Ave NE to the east, NE 2nd Street to the south, Jefferson Ave NE to the west, and local businesses to the north, bordered by NE 4th St. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 4 of 18 B. Environmental Elements 1. Earth Find help answering earth questions a. General description of the site: The site is located in the central portion of the Renton Highlands neighborhood, referred to in this document as the Monroe Ave Basin, is approximately bounded by Monroe Avenue NE, NE 2nd street, Union Avenue NE and NE 9th street. The site is a repurposed quarry known as the 14.4 acre Upper Balch Pit. The site currently functions as stormwater overflow for the city’s existing stormwater overflow system. Circle or highlight one: Flat, rolling, hilly, steep slopes, mountainous, other: gravel pit b. What is the steepest slope on the site (approximate percent slope)? Slopes are estimated to be over 40 percent. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them, and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. The hydrologic soil groups at the site are mapped as Arents Everett Material (A hydrologic soil group), Alderwood Gravelly Sandy Loam (C hydrologic soil group), and Arents Alderwood Material (B/D hydrologic soil group) by the National Resource Conservation Service (NCRS). d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. The parcel includes steep slope hazard areas (slopes greater than 40 percent) within all of the south, east, north, and a portion of the west parcel boundaries associated with sand and gravel mining. No other geologic hazards were observed. The site includes exposed soils associated with mining activities and more recent mass grading and filling activities. The Upper Balch Pit topography reflects the mining history with moderate to steeply sloping areas along the pit margins ranging from elevation 340 to 286 feet. e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill. The entire 3.00 acre site will be graded for the project, with roughly 1,700 cubic yards of total excavation and 143,000 cubic yards of total fill from City-approved sources. There will be roughly 42,700 cubic yards of non-infiltration material used for fill where infiltration is not required, which will be partially sourced from an existing stockpile on the property. There will be roughly 800 cubic yards of crushed surfacing top course (CSTC) used on the surface near stormwater vaults. There will be roughly 59,100 cubic yards of infiltration gravel used for storage and infiltration of stormwater below the infiltration chamber gallery. There will be roughly 21,000 cubic yards of select borrow used for between the infiltration gravel and native soil. There will be roughly 6,000 cubic yards of gravel DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 5 of 18 borrow and 2,400 cubic yards of gravel backfill for walls used for surrounding the infiltration chamber gallery. There will be roughly 10,100 cubic yards of topsoil and 600 cubic yards of mulch used for landscaping. f. Could erosion occur because of clearing, construction, or use? If so, generally describe. Erosion could potentially occur during clearing and construction due to temporary exposure of soils to precipitation or wind. Excavation and filling activities to construct the cut and fill walls will require clearing and vegetation removal. Temporary erosion and sediment control measures and appropriate best management practices will be used during construction to minimize the erosion of exposed soils. A Stormwater Pollution Prevention Plan (SWPPP) will be completed prior to any earth disturbing activities. Following construction, all exposed soils will be stabilized with a native seed mix. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? The project will result in approximately 14,300 square feet of new impervious surface, approximately 11% of the site. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. Best management practices and temporary erosion and sediment control measures will be enacted prior to construction. Straw wattles and silt fences will be installed at the toe of all steep slopes. Catch basin inserts will be installed around existing storm drains and silt fences will be installed around all clearing and grading limits. Soils exposed for more than 24 hours will be covered with plastic sheeting or other approved material to limit any potential mobilization. Construction staging will occur outside of regulated buffers or other environmentally sensitive areas. A SWPPP will be completed for the project prior to initiating any ground disturbing activities. 2. Air Find help answering air questions a. What types of emissions to the air would result from the proposal during construction, operation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known. Emissions from typical motorized construction equipment will occur during project construction such as small excavators and dump trucks. All construction equipment will be current emission standards and will be maintained to function properly. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. Emissions from passing motor vehicles accessing surrounding surface streets exist under normal circumstances and will not affect this proposal. There will be no increase of existing emission levels after the project is completed. There are no other off-site emissions or odors that will affect the project. c. Proposed measures to reduce or control emissions or other impacts to air, if any. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 6 of 18 All onsite equipment will meet current emissions standards and will be maintained properly throughout construction. 3. Water Find help answering water questions a. Surface Water: Find help answering surface water questions 1. Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. The site is not within 300 feet of the ordinary high water mark or within the width of the floodplain of nearby surface water bodies. Surface water as a result of construction activities will not discharge to a stream or river. 2. Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. The project will not require any work within 200 feet of surface water bodies. 3. Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. No wetlands were found on site, thus wetlands will not be filled or dredged. 4. Will the proposal require surface water withdrawals or diversions? Give a general description, purpose, and approximate quantities if known. No surface water will be withdrawn for the project. 5. Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. The project area is not located within a FEMA-mapped 100-year floodplain. 6. Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No waste materials will be discharged as a result of the project. All temporary erosion and sediment control measures and best management practices will be in place prior to project construction. Refueling of construction equipment will occur off-site or in uplands away from aquatic resources. Spill containment kits will be onsite during construction for any unexpected circumstances or accidents. Contractor will be required to have a Spill Prevention Control and Countermeasures (SPCC) Plan in place prior to the start of construction. b. Ground Water: Find help answering ground water questions 1. Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 7 of 18 general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give a general description, purpose, and approximate quantities if known. Groundwater will not be withdrawn, and no water will be discharged to groundwater as a direct result of the project. 2. Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (domestic sewage; industrial, containing the following chemicals…; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. No waste material will be discharged into the ground as a result of the project. c. Water Runoff (including stormwater): a) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. Runoff from the project will comprise of stormwater runoff. The runoff from the proposed impervious surface (Maintenance Access Road) will flow to the southeast corner of the maintenance road and enter the new stormwater conveyance system to join with offsite stormwater runoff. The combined stormwater runoff will enter the infiltration gallery, where it will infiltrate deep into the ground, eventually reaching the Cedar River. b) Could waste materials enter ground or surface waters? If so, generally describe. Waste material will not enter ground or surface waters as a result of this project. c) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, describe. No, the proposal will not alter drainage patterns in the vicinity of the site. Currently offsite water discharges to the Upper Balch Pit during large storm events through the two overflow pipes that convey high-flows untreated into the eastern side of the site. This emergency overflow will be lost due to the site redeveloping and the property owner grading the site to adjacent roadway elevations. The proposed infiltration facility will replace the storage and infiltration that is currently being serviced by an open pit on the east side of the site. The proposed facility will provide additional settling and sedimentation prior to infiltration, and the facility has been sized to fully infiltrate both the offsite water, as well as onsite water from the future full buildout of the Upper Balch Pit parcel (assuming a 40% impervious fraction). d) Proposed measures to reduce or control surface, ground, and runoff water, and drainage pattern impacts, if any. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 8 of 18 Due to the high infiltration rate of the site’s native soils, and low groundwater, there is not surface water to impact. The proposed infiltration facility will reduce the erosive potential of large events in the Upper Balch Pit. Stormwater runoff from the site, and runoff from the approximately 250-acres upsteam contributing basin, will be infiltrated in the proposed stormwater infiltration gallery. Potential stormwater runoff from the construction activity will be intercepted by installed erosion control methods such as silt fencing and straw wattles. Best management practices will be utilized for the duration of construction, ensuring that sediment is not mobilized to foul the native soils. Spill containment measures will be properly implemented, monitored and maintained, and all equipment refueling will occur outside of the project area. A Construction Stormwater General Permit and SWPPP, and SPCC Plan will be in place prior to any ground disturbing activities. Pervious concrete pavement will be used on new sidewalk sections where conditions are appropriate to reduce runoff. 4. Plants Find help answering plants questions a. Check the types of vegetation found on the site: ☒ deciduous tree: alder, maple, aspen, other ☒ evergreen tree: fir, cedar, pine, other ☒ shrubs ☒ grass ☐ pasture ☐ crop or grain ☐ orchards, vineyards, or other permanent crops. ☒ wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other ☐ water plants: water lily, eelgrass, milfoil, other ☐ other types of vegetation b. What kind and amount of vegetation will be removed or altered? Vegetation to be removed for construction the stormwater retention facility includes shrubs and roadside grasses that occur on the steep slopes and roadside areas. Non-native shrubs and other residential landscaping within the city ROW will be removed in areas immediately adjacent to the existing edge of pavement. The roadside areas will be stabilized with a native seed mix as appropriate for the site. c. List threatened and endangered species known to be on or near the site. No known threatened or endangered species are known to be on or near the site. No sensitive plant species were observed during the field survey in May 2021. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any. California incense cedar trees will be planted along the northern and western boundaries of the site. Assorted drought tolerant shrub plantings will installed along slopes. A drought tolerant grass seed mix will be used in the area over the infiltration chambers. Landscape boulders and root barriers will be used to protect the plants and facilities. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 9 of 18 e. List all noxious weeds and invasive species known to be on or near the site. Noxious weeds on site include reed canarygrass (Phalaris arundinacea) and Himalayan blackberry (Rubus armeniacus) observed on the inner slopes. Other plant species observed include Upland forest habitats along Monroe Avenue include mature Douglas fir (Pseudotsuga menziesii), and Himalayan blackberry (Rubus discolor). Tree and shrub species typical of wetland habitats such as Sitka willow (Salix sitchensis), field horsetail (Equisetum arvense) and common rush, (Juncus effusus) were found on the slope. 5. Animals Find help answering animal questions a. List any birds and other animals that have been observed on or near the site or are known to be on or near the site. Examples include: · Birds: hawk, heron, eagle, songbirds, other: · Mammals: deer, bear, elk, beaver, other: · Fish: bass, salmon, trout, herring, shellfish, other: No federally listed species have been documented in or near the project area. The project area is within the Puget Sound Domain for West Coast Salmon and Steelhead under the Endangered Species Act (ESA); however, no ESA-listed salmonid species or designated critical habitat are known to occur on site. No terrestrial or freshwater ESA-listed species are known to occur in the project area, and no suitable habitat for ESA-listed species was observed in the project area. WDFW’ PHS on the Web online mapping tool does not map or list any priority species or habitats occurring within the project area. WDFW’s SalmonScape online mapping tool does not indicate the presence of anadromous salmonids in on site. During the site visit in May 2021, a female killdeer was observed nesting on the western side, near the entrance gate. Several species of migratory songbirds such as goldfinch, hummingbird, were observed and heard in the deciduous trees and shrubs on the eastern slope. b. List any threatened and endangered species known to be on or near the site. No threatened or endangered species are mapped (WDFW Priority Habitat Species Map, 2021) on or near the project site. c. Is the site part of a migration route? If so, explain. The study area is located within the Pacific Flyway, a migration corridor for birds in North America west of the continental divide. The project site is not a known congregation point for migrating birds. The site is not listed as a migration route for significant species through WDFW Priority Habitat and Species database. d. Proposed measures to preserve or enhance wildlife, if any. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 10 of 18 No measures to enhance wildlife are proposed. The proposed clearing has been minimized through the use of retaining walls and maximizing the use of existing disturbed areas adjacent to Monroe Ave. e. List any invasive animal species known to be on or near the site. No invasive animal species are known to be near the site. 6. Energy and Natural Resources Find help answering energy and natural resource questions 1. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. None needed to complete the project. 2. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. The completed project will not use solar energy. 3. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any. No energy conservation features have been incorporated into the project, as the completed project has no energy consumption requirements besides a replaced street lamp. The completed project will not use solar energy. 7. Environmental Health Find help with answering environmental health questions a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur because of this proposal? If so, describe. Environmental health hazards associated with the project are limited to those produced by standard stormwater construction projects. These may include the emissions of gases or minor spilling of fluids associated with construction equipment. Risks associated with potential spills will be minimized or avoided by implementing appropriate BMPs. Contractor will be required to have a SPCC Plan in place prior to the start of construction. A spill prevention kit will be placed on site in case of an unintended spill, and equipment refueling will occur off-site or within containment areas. 1. Describe any known or possible contamination at the site from present or past uses. None known. No existing or former land uses indicate potential contamination in the project area as most of the project area has been used as quarry since 1949. The project area does not intersect or overlap any hazardous and problem waste sites. 2. Describe existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 11 of 18 None known. 3. Describe any toxic or hazardous chemicals that might be stored, used, or produced during the project's development or construction, or at any time during the operating life of the project. None known. Spilling of fluids associated with construction equipment may occur. Potential spills will be minimized or avoided by implementing appropriate BMPs. Fluids such as gasoline and oil will be stored in spill preventative containers. There will be no other storage, use or production of hazardous chemicals during project development and construction. 4. Describe special emergency services that might be required. First aid kit and emergence 911 response if there is a worker injury. No other emergency services relating to roadway construction is anticipated following completion of the project. 5. Proposed measures to reduce or control environmental health hazards, if any. As noted above, appropriate BMPs will minimize the risk of environmental health hazard exposure, and reduce/control environmental health hazards should exposure occur. b. Noise 1. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Noise on site is limited to routine operation of machinery such as backhoes and trucks entering and leaving the site. Types of noise in the area include noises typically associated with roadways, such as car and truck motors. The site is bordered by King County Equipment Maintenance facility, Renton Transfer station, and Renton Technical College. All of these facilities experience high levels of machine operation, trucking operations and traffic. 2. What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site)? For the short term during roadway construction there will be muffled motorized construction equipment and noise from trucks delivering construction materials. The hours of operation during construction would likely be from approximately 8 AM to 5 PM. Noise is not anticipated to increase after construction because no new traffic lanes are proposed. The bike lanes and sidewalks will support non-motorized forms of transportation that do not generate high noise levels. 3. Proposed measures to reduce or control noise impacts, if any. Working mufflers on all motorized equipment will be maintained during construction. Construction activities will be limited to daylight hours to minimize impacts to nearby residences. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 12 of 18 8. Land and Shoreline Use Find help answering land and shoreline use questions a. What is the current use of the site and adjacent properties? Will the proposal affect current land uses on nearby or adjacent properties? If so, describe. The project area is bordered by Monroe Ave NE to the east and NE 2nd St to the south. The Greenwood Memorial Park and Funeral Home is located adjacent to Monroe Ave NE. The Renton Transfer Station is located east of Jefferson Ave NE. Land use south of the site is the King County Roads Maintenance facility, Renton Technical College Annex and the Renton Public Works Maintenance Division. This proposal is not expected to affect current landuse since most of it is already industrial equipment storage. b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to other uses because of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or nonforest use? The project site has not been used for farmlands or forestlands since 1949 when the property was converted to a quarry. 1. Will the proposal affect or be affected by surrounding working farm or forest land normal business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how? There are no working farms or forests on adjoining properties. The project site will not affect or be affected by surrounding forestlands or farmlands uses. c. Describe any structures on the site. There is a small temporary job shack currently located on the site. There is a paved driveway at the entrance to the Upper Balch Pit adjacent to Jefferson Ave NE that leads to the temporary job shack. d. Will any structures be demolished? If so, what? The proposed improvements do not include demolishing any structures. e. What is the current zoning classification of the site? The site is zoned R10-Residential 10 du/ac. f. What is the current comprehensive plan designation of the site? Residential medium density. g. If applicable, what is the current shoreline master program designation of the site? The site is not within shoreline master program jurisdiction. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 13 of 18 h. Has any part of the site been classified as a critical area by the city or county? If so, specify. The site has not been classified as a critical area by the city. i. Approximately how many people would reside or work in the completed project? None. This project consists of a proposed stormwater improvement project to improve stormwater conveyance. j. Approximately how many people would the completed project displace? None. No new right of way is required to complete this project. k. Proposed measures to avoid or reduce displacement impacts, if any. None. There will be no displacement impacts. l. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any. The proposed stormwater improvements project is consistent with existing land uses and long-term planning goals of improving stormwater drainage for the Monroe Ave basins. This proposal would provide a robust conveyance system that would have minimal risk associated with long-term performance. m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any. There will be no impacts to agricultural or forest lands. 9. Housing Find help answering housing questions a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low- income housing. The proposed project will not provide housing units. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. No housing is proposed for removal. c. Proposed measures to reduce or control housing impacts, if any. No measures are proposed to reduce or control housing impacts. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 14 of 18 10. Aesthetics Find help answering aesthetics questions a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? The proposed infiltration gallery is all buried infrastructure. The maintenance access road along the north end of the site will have a swing gate adjacent to Monroe Ave NE. The swing gate will be the highest structure of the project improvements. There are high voltage utility poles within the site, to the south of the project. The project does not propose any impacts to these utility poles. b. What views in the immediate vicinity would be altered or obstructed? Views in the immediate vicinity will not be obstructed by the current proposal. c. Proposed measures to reduce or control aesthetic impacts, if any. All exposed soils adjacent to the road will be seeded with a native grass seed mix. 11. Light and Glare Find help answering light and glare questions a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. The project will not produce light or glare. b. Could light or glare from the finished project be a safety hazard or interfere with views? None. c. What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any. None. 12. Recreation Find help answering recreation questions a. What designated and informal recreational opportunities are in the immediate vicinity? No informal recreation opportunities are in the immediate vicinity. b. Would the proposed project displace any existing recreational uses? If so, describe. The proposed project will not displace existing recreational uses. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any. A traffic control plan will be in place during construction to maintain access to the city and county maintenance operations. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 15 of 18 13. Historic and Cultural Preservation Find help answering historic and cultural preservation questions a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers? If so, specifically describe. The Washington State Department of Archaeology and Historic Preservation’s website database (http://www.dahp.wa.gov/learn-and-research/find-a-historic-place) does not indicate the presence of any culturally significant places or objects on the project site. b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources. The site has been used a quarry since 1949, thus cultural artifacts are not expected to be found. No cultural resources were identified on the wisaard.dahp.wa.gov website. c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc. Methods used to assess potential impacts to cultural and historic resources included reviewing DAHP’s website database (WISAARD – Washington’s Searchable Cultural Database). d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that may be required. There is low potential to affect cultural resources with this project. Ground disturbing activities will be monitored to ensure protection of any inadvertent cultural resources discovered during construction. Work will be suspended, DAHP will be contacted, and a professional archaeologist will be called in the event of an inadvertent discovery. 14. Transportation Find help with answering transportation questions a. Identify public streets and highways serving the site or affected geographic area and describe proposed access to the existing street system. Show on site plans, if any. The project area consists of access to and from Monroe Ave NE and Jefferson Ave NE. b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop? NE 4th Street north of the site is served by public transit but there is no public transit to Monroe Ave NE or Jefferson Ave NE. The planned stormwater facility is not a public facility. c. Will the proposal require any new or improvements to existing roads, streets, pedestrian, bicycle, or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private). The only improvements to existing roads, streets or pedestrian facilities is a new 30-foot length of public sidewalk between the site and Monroe Ave NE. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 16 of 18 d. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. The project will not use water, rail, or air transportation. e. How many vehicular trips per day would be generated by the completed project or proposal? If known, indicate when peak volumes would occur and what percentage of the volume would be trucks (such as commercial and nonpassenger vehicles). What data or transportation models were used to make these estimates? The proposed project will maintain existing traffic volumes. An increase in traffic volumes is not expected as a result of this project. f. Will the proposal interfere with, affect, or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe. No. There are no agricultural or forest practices within the immediate area. g. Proposed measures to reduce or control transportation impacts, if any. N/A 15. Public Services Find help answering public service questions a. Would the project result in an increased need for public services (for example: fire protection, police protection, public transit, health care, schools, other)? If so, generally describe. None. Transportation impacts are not anticipated as a result of this project. b. Proposed measures to reduce or control direct impacts on public services, if any. There are no proposed measures to reduce or control direct impacts on public services. 16. Utilities Find help answering utilities questions a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other: No utilities are currently available on site. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. The only new utilities proposed for this project are the stormwater pipes, structures, and facilities that receive stormwater from the stormwater system in Monroe Ave NE. Utilities located within the areas of roadway widening will be relocated on site as necessary. C. Signature Find help about who should sign The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 17 of 18 X Type name of signee: Kevin Evans, PE Position and agency/organization: Civil Engineer III, City of Renton Date submitted: 8/18/2023 D. Supplemental sheet for nonproject actions Find help for the nonproject actions worksheet IT IS NOT REQUIRED to use this section for project actions. Because these questions are very general, it may be helpful to read them in conjunction with the list of the elements of the environment. When answering these questions, be aware of the extent the proposal, or the types of activities likely to result from the proposal, would affect the item at a greater intensity or at a faster rate than if the proposal were not implemented. Respond briefly and in general terms. 1. How would the proposal be likely to increase discharge to water; emissions to air; pro- duction, storage, or release of toxic or hazardous substances; or production of noise? · Proposed measures to avoid or reduce such increases are: 2. How would the proposal be likely to affect plants, animals, fish, or marine life? · Proposed measures to protect or conserve plants, animals, fish, or marine life are: 3. How would the proposal be likely to deplete energy or natural resources? · Proposed measures to protect or conserve energy and natural resources are: Kevin Evans DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C SEPA Environmental checklist (WAC 197-11-960) January 2023 Page 18 of 18 4. How would the proposal be likely to use or affect environmentally sensitive areas or areas designated (or eligible or under study) for governmental protection, such as parks, wilderness, wild and scenic rivers, threatened or endangered species habitat, historic or cultural sites, wetlands, floodplains, or prime farmlands? · Proposed measures to protect such resources or to avoid or reduce impacts are: 5. How would the proposal be likely to affect land and shoreline use, including whether it would allow or encourage land or shoreline uses incompatible with existing plans? · Proposed measures to avoid or reduce shoreline and land use impacts are: 6. How would the proposal be likely to increase demands on transportation or public services and utilities? · Proposed measures to reduce or respond to such demand(s) are: 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. DocuSign Envelope ID: 00997718-9B11-4D89-AD86-5EF6CC7CC14C