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HomeMy WebLinkAboutECF_250611_Environmental Checklist 2023_Springbrook Terrace WQ_v0SEPA Environmental checklist September 2023 Page 1 (WAC 197-11-960) SEPA1 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. 1 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/Checklist-guidance SEPA Environmental checklist September 2023 Page 2 (WAC 197-11-960) A.Background Find help answering background questions2 1. Name of proposed project, if applicable: Springbrook Terrace Water Quality Retrofit (Ecology grant agreement number WQC-2024- Renton-00036) 2. Name of applicant: City of Renton – Project Manager Chester Bennett 3. Address and phone number of applicant and contact person: Chester Bennett 1055 S Grady Way, Renton WA 98057 425-430-7205 4. Date checklist prepared: 5/6/2025 5. Agency requesting checklist: Washington State Department of Ecology 6. Proposed timing of schedule (including phasing, if applicable): Complete Design Dec 2025, Start Construction Summer 2027, Complete Construction Fall 2027 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. Design Report by David Evans and Associates dated April 2025. Geotechnical Engineering Report by HWA Geosciences dated December 11, 2024. 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. None 10. List any government approvals or permits that will be needed for your proposal, if known. None 11. Give 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 2 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-A-Background SEPA Environmental checklist September 2023 Page 3 (WAC 197-11-960) 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 proposes to retrofit the existing detention pond to add water quality treatment for a contributing area that consists of approximately 5.2 acres of single-family residential zoning land cover area. This will be accomplished by excavating below the existing pond bottom and sloping the pond side slopes no more than a 3:1 grade. The project site totals 11,289 sf and will not be expanded. Improvements and impacts will be limited to the existing parcel and soil disturbing activity for the work planned will disrupt approximately 6,900 sf of soil. New impervious surface will be added to the project site due to the addition of a gravel access road and small vehicle parking area totaling 1,655 sf. The project site will continue to be used as a stormwater treatment facility. 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 in the southwest area of Renton known as the Snake Hill/Springbrook Terrace neighborhood. The project site is confined to and located on the subject parcel owned and operated by the City of Renton (Parcel Number: 794120-0230) in the Springbrook Terrace Plat permitted by King County in 1985 (Recording Number 8504230635) and annexed by Renton in 2009. Per the original plat document, the subject parcel (Tract A, PN: 794120-0230) is bound on all sides by private parcels and an existing access easement across the development’s private road (98th Ave S) as well as the abutting parcels to the north (Lot 1, PN: 794120-0010) and the east (Lot 2, PN: 794120-0020). There are existing 10-ft wide utility and drainage easements to access the inlets and outlets to the existing detention pond on parcels to the north (Lot 1, PN: 794120-0010) and to the southeast (Lot 3, PN: 794120-0030). The inlet and outlet alignments will be maintained, and no additional easements will be needed. SEPA Environmental checklist September 2023 Page 4 (WAC 197-11-960) B.Environmental Elements 1. Earth Find help answering earth questions3 a. General description of the site: The site is mainly comprised of lawn / grass and a low lying depression area that is a detention pond for stormwater runoff. The pond area bottom is flat with steep side slopes. The area around the top of the detention pond to the east and north has moderate slopes from east to west and north to south, sloping towards the pond bottom. The project’s western boundary is the top of a regulated steep slope. The project’s southern boundary has moderate slopes from north to south, sloping away from the project site. Circle or highlight one: Flat, rolling, hilly, steep slopes, mountainous, other: b. What is the steepest slope on the site (approximate percent slope)? The steepest slope on the existing site is approximately 60% which is the pond side slopes. 33% is steepest proposed slope for the side slopes of the additional wetpond depth. 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. According to the Geologic Map of the Renton Quadrangle, King County, Washington (D.R. Mullineaux, 1965) the site is underlain primarily by recessional outwash deposits, overlying advance outwash deposits. Recessional outwash consists of stratified sands and gravels. The advance outwash beneath the recessional deposits comprises dense to very dense sands with varying amounts of gravel and occasional silt. (HWA, 2024) See section 3.0 of the Geotechnical Report for further details. No agricultural land will be impacted on this site. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. None. 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. Approximately 630 CY total of soil will be excavated on site. This total is comprised of approximately 586 CY will be excavated to create additional storage volume and for 3 https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist- guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-earth SEPA Environmental checklist September 2023 Page 5 (WAC 197-11-960) water quality treatment of stormwater runoff, 12 CY will be excavated below an internal divider berm wall for embedment and bedding, and 32 CY will be excavated for installation of pipes and structures. f. Could erosion occur because of clearing, construction, or use? If so, generally describe. Yes. Due to excavation to add additional volume to the pond erosion could occur. The Geotechnical report notes that some seepage at shallow elevations could be possible. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Approximately 15% of the site will be covered with impervious surface (gravel surfacing) after construction is complete. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. The Construction Plans prepared by David Evans and Associates detail the minimum requirements for temporary erosion control and consist of silt fence, high visibility fencing delineating clearing limits, sediment trap, stabilized construction entrance, and inlet protection. The Design Report prepared by David Evans and Associates outlines 13 elements of a C-SWPPP to control erosion at the site and how the project is addressing them. To maintain slope stability temporary cut side slopes should be sloped no more than 1.5H:1V. The stability of cuts should be monitored and side slopes adjusted accordingly. (HWA, 2024). 2. Air Find help answering air questions4 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. During construction there will be an increase in greenhouse gas emissions due to the operation of construction equipment. Approximate quantities are not known. There will also be an increase in dust generation due to soil excavation and earthwork. Dust will be controlled with water application and placement of mulch or soil covering. Approximate quantities are not known. Once completed the improvements to the facility will not result in any operations emissions. Once completed the improvements to the facility will not result in any additional emissions due to maintenance. 4 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-Air SEPA Environmental checklist September 2023 Page 6 (WAC 197-11-960) b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. None c. Proposed measures to reduce or control emissions or other impacts to air, if any : None required. 3. Water Find help answering water questions5 a. Surface: Find help answering surface water questions6 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. There are no surface water bodies onsite. The site is contains a man-made detention pond to control stormwater runoff rates. 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. No 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. None 4. Will the proposal require surface water withdrawals or diversions? Give a general description, purpose, and approximate quantities if known. No 5. Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. No 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 5 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-3-Water 6 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-3-Water/Environmental- elements-Surface-water SEPA Environmental checklist September 2023 Page 7 (WAC 197-11-960) b. Ground: Find help answering ground water questions7 1. Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a 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. No 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. None c. Water Runoff (including stormwater): 1. 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. The source of runoff consists of 5.2 acres of single-family residential land cover of Springbrook Terrace Plat development. The runoff will be collected by the private stormwater conveyance system consisting of catch basins and storm pipes and conveyed to the stormwater facility that will provide flow control and water quality treatment. The facility discharges to the north via a 21-inch storm pipe across a private parcel with an easement. Then flows enter the public conveyance system in S 55th St and are conveyed west to Talbot Rd S, then conveyed south, and finally outfall into Upper Springbrook Creek just south of the intersection of S 194th St and Talbot Rd S. 2. Could waste materials enter ground or surface waters? If so, generally describe. No 3. Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, describe. No d. Proposed measures to reduce or control surface, ground, and runoff water, and drainage pattern impacts, if any: There are no anticipated impacts to runoff rates, drainage patterns, or ground water from this project. The surface water runoff collected and discharged from the facility will have improved water quality as a result of the proposed improvements. 7 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-3-Water/Environmental- elements-Groundwater SEPA Environmental checklist September 2023 Page 8 (WAC 197-11-960) 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? Approximately 10,050 sf of vegetation will be disturbed during the project work Approximately 7,800 sf grass will be removed and replaced with grass seed and/or a clover seed mix. Approximately 1,700 sf of grass will be removed and replaced with impervious surface (gravel, quarry spalls, concrete wall). Approximately 650 sf of blackberries and invasives along the western boundary of the pond and parcel will be cleared for fencing work and installation of drainage structures. 2 ea deciduous trees will be removed. Trees along the south property line overhanging the pond and fence line will be trimmed for maintenance and access purposes. c. List threatened and endangered species known to be on or near the site. None d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any. A clover seed mix is proposed for planting on disturbed soils at the project site and within the facility to replace the existing grass vegetation stabilize the soil, reduce mowing and maintenance, and provide habitat for pollinator species. e. List all noxious weeds and invasive species known to be on or near the site. Blackberries SEPA Environmental checklist September 2023 Page 9 (WAC 197-11-960) 5. Animals Find help answering animal questions8 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. None b. List any threatened and endangered species known to be on or near the site. None c. Is the site part of a migration route? If so, explain. No d. Proposed measures to preserve or enhance wildlife, if any. None, the site is stormwater infrastructure facility thus wildlife presence at the project site will compromise it’s the facility’s ability to function and provide water quality treatment. e. List any invasive animal species known to be on or near the site. None 6. Energy and natural resources Find help answering energy and natural resource questions9 a. 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 b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No c. 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. None 7. Environmental health Health Find help with answering environmental health questions10 8 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-5-Animals 9 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-6-Energy-natural-resou 10 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-7-Environmental-health SEPA Environmental checklist September 2023 Page 10 (WAC 197-11-960) 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. No 1. Describe any known or possible contamination at the site from present or past uses. None 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. None 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. Gas and diesel fuel may be stored at the site during construction. Thus, a spill control plan will be required to ensure containment of any of inadvertent spills and/or leaks from parked equipment. No such toxic materials will be stored at the site during the operating life of the project. 4. Describe special emergency services that might be required. None 5. Proposed measures to reduce or control environmental health hazards, if any. A hazard and spill control plan will be required during construction and managed by the contractor. b. Noise 1. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? None 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)? Noise levels will be increased from the contractor’s equipment activities during construction. 3. Proposed measures to reduce or control noise impacts, if any: Appropriate work hours will be respected to reduce exposure and impacts to neighbors. Traffic control will be implemented as required and appropriate mufflers on all equipment will be used by the contractor. SEPA Environmental checklist September 2023 Page 11 (WAC 197-11-960) 8. Land and shoreline use Find help answering land and shoreline use questions11 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 site is currently used a City stormwater detention facility. The proposal will not affect current land uses on the site, nearby the site, or on adjacent properties. 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? No 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? No c. Describe any structures on the site. No structures are present onsite. d. Will any structures be demolished? If so, what? No e. What is the current zoning classification of the site? Residential, R-4 f. What is the current comprehensive plan designation of the site? Residential Low Density g. If applicable, what is the current shoreline master program designation of the site? Not applicable h. Has any part of the site been classified as a critical area by the city or county? If so, specify. No i. Approximately how many people would reside or work in the completed project? None j. Approximately how many people would the completed project displace? None 11 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-8-Land-shoreline-use SEPA Environmental checklist September 2023 Page 12 (WAC 197-11-960) k. Proposed measures to avoid or reduce displacement impacts, if any. None are required l. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any. None are required m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any: None are required 9. Housing Find help answering housing questions12 a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. None b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. None c. Proposed measures to reduce or control housing impacts, if any: None are required 10. Aesthetics Find help answering aesthetics questions13 a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? 6-ft tall fence which matches existing conditions. b. What views in the immediate vicinity would be altered or obstructed? None c. Proposed measures to reduce or control aesthetic impacts, if any: None 12 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-9-Housing 13 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-10-Aesthetics SEPA Environmental checklist September 2023 Page 13 (WAC 197-11-960) 11. Light and glare Find help answering light and glare questions14 a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None b. Could light or glare from the finished project be a safety hazard or interfere with views? No 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 are required 12. Recreation Find help answering recreation questions a. What designated and informal recreational opportunities are in the immediate vicinity? None b. Would the proposed project displace any existing recreational uses? If so, describe. None c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any : None are required 13. Historic and cultural preservation Find help answering historic and cultural preservation questions15 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. No 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. 14 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-11-Light-glare 15 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-13-Historic-cultural-p SEPA Environmental checklist September 2023 Page 14 (WAC 197-11-960) No. A Washington Department of Ecology Cultural Resources Review Form and an Inadvertent Discovery Plan was were completed and provided to the Department of Ecology in July of 2024. Ecology issued a Final Determination of No Cultural Resources Impacts, with a stipulation for an inadvertent discovery plan (IDP), during the design phase 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. DAHP WISAARD resource was used to assess the risk levels of the site for Cultural Resource impacts, which was determined to be Moderate as indicated in the CRR form. Ecology and City of Renton consulted with Tribes and DAHP. 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. An IDP was prepared and implemented for any future earth disturbing activities. 14. Transportation Find help with answering transportation questions16 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. Access to the site will be provided by the public right-of-way from S 55th St and an access easement across the private road 98th Ave S. 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? No 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). No d. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No 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 16 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-B-Environmental-elements/Environmental-elements-14-Transportation SEPA Environmental checklist September 2023 Page 15 (WAC 197-11-960) the volume would be trucks (such as commercial and nonpassenger vehicles). What data or transportation models were used to make these estimates? None 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 g. Proposed measures to reduce or control transportation impacts, if any: None are required 15. Public services Find help answering public service questions17 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. No b. Proposed measures to reduce or control direct impacts on public services, if any. None are required 16. Utilities Find help answering utilities questions18 a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other: None 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. None are required C.Signature Find help about who should sign19 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. 17 https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist- guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-15-public-services 18 https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist- guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-16-utilities 19 https://ecology.wa.gov/Regulations-Permits/SEPA/Environmental-review/SEPA-guidance/SEPA-checklist- guidance/SEPA-Checklist-Section-C-Signature SEPA Environmental checklist September 2023 Page 16 (WAC 197-11-960) X Type name of signee: Position and agency/organization: Date submitted: D.Supplemental sheet for nonproject actions Find help for the nonproject actions worksheet20 Do not 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; production, storage, or release of toxic or hazardous substances; or production of noise? Such increases from the proposed improvements are unlikely in the permanent condition. • Proposed measures to avoid or reduce such increases are: None are required. 2. How would the proposal be likely to affect plants, animals, fish, or marine life? Such impacts are unlikely to adversely impact plants, animals, fish or marine life at the project site. Some new types of plants directly surrounding the pond may change as the water quality improvements will result in wetpond throughout most of the year. Similar impacts may be seen with animals that may have increased access to water with a wetpond throughout most of the year. • Proposed measures to protect or conserve plants, animals, fish, or marine life are: No measures are required to protect plants or animals. 3. How would the proposal be likely to deplete energy or natural resources? Very unlikely. 20 https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist- guidance/sepa-checklist-section-d-non-project-actions SEPA Environmental checklist September 2023 Page 17 (WAC 197-11-960) • Proposed measures to protect or conserve energy and natural resources are: None are required. 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? The proposal will result in improvement water quality from residential runoff being discharged into Upper Springbrook Creek that is approximately 1,600 ft downstream of the project site. • Proposed measures to protect such resources or to avoid or reduce impacts are: Flow control function of the existing facility will be maintained per proposed design. 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? Unlikely there will be no change in the land use or current use of the project site. The project site is not designated as a shoreline. • Proposed measures to avoid or reduce shoreline and land use impacts are: None are required. 6. How would the proposal be likely to increase demands on transportation or public services and utilities? Unlikely. • Proposed measures to reduce or respond to such demand(s) are: None are required. 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. The project will overall improve the facility’s impact on the environment.