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SEPA ChecklistSEPA ENVIRONMENTAL CHECKLIST (.P R E L-W +N Ai- y E 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 SEPA Environmental checklist (WAC 197-11-960) July 2016 Pagel of 28 art 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 A. Background 1. Name of proposed project, if applicable: Y,)V%1, I P Carbon Recovery Project 2. Name of applicant: City of Edmonds 3. Address and phone number of applicant and contact person: Pamela Randolph 200 Second Ave Edmonds, VVA 98020 4. Date checklist prepared: December 18, 2018 5. Agency requesting checklist: Department of Ecology 6. Proposed timing or schedule (including phasing, if applicable): 2019 - 2021 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. The proposed system being installed is being sized to accommodate the 20-year projected flows and loads. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. An environmental impact assessment was performed during the treatment plant construction when the design engineers chose to use incineration for solids disposal, rather than land application of biosolids. A SEPA checklist was performed for the 1998 Biosolids application. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 2 of 28 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 exist 10. List any government approvals or permits that will be needed for your proposal, if known. Department of Ecology review and approval of Engineering Report and Design Drawings and Puget Sound Clean Air Agency (PSCAA) issuance of Notice of Construction (NOC). 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 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 WWTP Carbon Recovery Project will replace the sanitary sewage incinerator (SSI) and associated equipment. The replacement technology being proposed is a gas -fired belt dryer and three pyrolysis units; associated ancillary equipment including a live bottom dewatered sludge hopper, twin-screw feeder and piston pump; a water heater, heat exchanger and pumps, heat recovery system, various conveyors and odor control system modifications. The pyrolysis equipment would be housed in a new roughly 50' x 30' building constructed within the current WWTP footprint. 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 location is 200 Second Ave S in Edmonds WA. The existing WWTP site is located in downtown Edmonds, nestled between Edmonds Way and 2nd Ave S south of Dayton Street. Due to site constrains, the only available area for the construction of new facilities is the parking lot area on the north side of the Operations Building. The construction area is contained within the 600 building onsite and in the parking lot of the facility. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 3 of 28 Construction staging may take place on City owned property across the street. (see area and site maps below.) W! ULM - IN i 11 i �L�a� ,N �► " Illfi � - .� -t ►" 1liil:� ■ rill ) . rna �� ■� iiil.w��!� v• ItHIM s ���i� �fi I M llili/11111<► i _ �■ �1��..�yrww � ,. pal Simi van FA I V 2 Ma iiiiii W- SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 4 of 28 I i I J J; I------------- ------ . I I REltl1E s`tli � 1C4.'N. MR5 'I II i >. I (�j !' '8E ON4 Pcc0A I � ..J.011tYR.lI1Dw1: JUL IIII 01 .. ,l 1 - jj -•.4. -al i'� fl UCMMAOM CfW1L 4Wf'LA IB SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 5 of 28 SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 6 of 28 B. Environmental Elements 1. Earth a. General description of the site: (circle one): Flat, rolling, hilly, steep slopes, mountainous, other b. What is the steepest slope on the site (approximate percent slope)? 1-2% 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 building site is contained within an existing improved site. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. M 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. No filling is required. Some excavation is required in the footprint of the new structure for access to existing buried pipe on -site and for footings for the new structure. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. 70n g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? No increase of impervious surfaces planned for the project. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Not applicable to this project. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 7 of 28 2. Air 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 to the air are expected to occur in the exhausts from the P-Five pyrolysis, units, the water heater, and the sludge dryer and associated sludge management facilities. P-Five pyrolysis units The P-Five pyrolysis units are potential sources of air pollutants associated with pyrolysis of sewage Sludge and the combustion of the pyrolysis -derived syngas. NG-combustion during start-up is also a source of emissions. Combustion of syngas (and NG) in the combustion chamber outside the pyrolysis reactor will produce combustion by-products, including carbon monoxide (CO), nitrogen oxides (NOx), PM, sulfur dioxide (SO,), volatile organic compounds (VOC), and combustion -related hazardous and toxic air pollutants (HAPs) and JAPs). To reduce pollutant emissions, the exhaust air from the syngas combustion chamber will be treated in a packed bed scrubber for removal of acid gases and other water-soluble compounds, followed by an activated carbon absorption unit for removal of organics other sorptive constituents (such as mercury). Flue gas recirculation is also provided to reduce NOx formation during syngas combustion. Waiter Heater The water heater is a 25 MMBtuh NG-fired boiler. Emissions from the water heater will be products of natural gas combustion, including carbon monoxide (CO), nitrogen oxides (NUS), PM, sulfur dioxide (SO2), volatile organic compounds (VOC), and combustion -related hazardous and toxic air pollutants (HAPs) and (TAPS). To reduce pollutant emissions, the water heater will be equipped with low-NOx burners. Sludge Dryer and Sludge Handling equipment. The sludge dryer will be indirect -heated; the drying air will be heated using process hot water across a heat exchanger. The dryer will be a source of foul air and odors associated with the sludge feed. Based on experience invoking applications of sludge dryers to products with similar moisture content, the dryer is also a likely source of particulate matter' (PM) emissions. Sludge handling equipment includes hoppers and conveyors. Ventilation air from this equipment will be a source of foul air odors. Particulates could also be generated due to material abrasion; given the moisture content of the sludge, particulate formation is expected to be negligible. 1 In the document, unless otherwise specified "particulate matter" or "PM" refers particulate matter in all (both filterable and condensable). SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 8 of 28 To reduce pollutant emissions, the foul air from the sludge dryer and sludge handling facilities will routed through a packed bed chemical scrubber to remove odorous compounds. The packed bed scrubber will also reduce particulate concentrations. Fxnecred project emissions are summarized below: Project Criteria Air Pollutant Emissions Summary Pollutant P-Plve Ib/hr ton/yr Water Heater Ib/hr ton/yr Sludge Dryer Ib/hr ton/yr Project Total Ib/hr ton/yr PM2.5 0.04 0.18 0.02 0.08 0.00 0.01 0.06 0.27 PM10 0.04 0.18 0.02 0.08 0.00 0.01 0.06 0.27 NOx 0.20 0.88 0.03 0.11 - - 0.23 0.99 S02 0.00 0.01 0.00 0.01 0.00 0.02 CO 0.02 0.07 0.17 0.75 0.19 0.81 VOC 0.02 0.07 0.01 0.06 0.03 0.13 Pb 2.08E-06 9.12E-06 1.23E-06 5.38E-06 3.31E-06 1.45E-05 Toxic Air Pollutant Emissions Toxic Air Pollutant Sludge Pyrolysis Ib/hr Ib/yr Water Heater Ib/hr Ib/yr 1,4-Dichlorobenzene 2.94E-06 2.58E-02 3-Methylcholanthrene 4.41E-09 3.86E-05 7,12-Dimethylbenz[a]anthracene 3.92E-08 3.44E-04 Arsenic & Inorganic Arsenic Compounds 1.93E-05 1.69E-01 4.90E-07 4.29E-03 Benz[a]anthracene 4.41E-09 3.86E-05 Benzene 5.15E-06 4.51E-02 Benzo[a]pyrene 2.94E-09 2.58E-05 Benzo[b]fluoranthene 4.41E-09 3.86E-05 Benzo[k]fluoranthene 4.41E-09 3.86E-05 Beryllium & Compounds (NOS) 2.94E-08 2.58E-04 Cadmium & Compounds 5.21E-08 4.57E-04 2.70E-06 2.36E-02 Chromium(VI) 6.93E-07 6.07E-03 Chrysene 4.41E-09 3.86E-05 Cobalt 2.06E-07 1.80E-03 SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 9 of 28 Toxic Air Pollutant Emissions Sludge Pyrolysis Water Heater Toxic Air 'Pollutant ib/hr Ib/yr Ib/hr Ib/yr Copper & Compounds 2.08E-06 1.83E-02 Dibenz[a,h]anthracene 2.94E-09 2.58E-05 Formaldehyde 1.84E-04 1.61E+00 Indeno[1,2,3-cd]pyrene 4.41E-09 3.86E-05 Lead and compounds (NOS) 2.08E-06 1.82E-02 Manganese & Compounds 1.46E-06 1.28E-02 9.31E-07 8.16E-03 Mercury, Elemental 3.01E-06 2.64E-02 6.37E-07 5.58E-03 Naphthalene 1.50E-06 1.31E-02 n-Hexane 4.41E-03 3.86E+01 Nitrogen dioxide 1.01E-01 8.84E+02 1.26E-02 1.11E+02 Polychlorinated Biphenyls, NOS 3.01E-10 2.64E-06 Selenium & Selenium Compounds (other than Hydrogen Selenide) 5.88E-08 5.15E-04 Toluene 8.33E-06 7.30E-02 2,3,7,8-Tetrachlorodibenzo-p- <1.7E-11 <1.5E-07 dioxin & Related Compounds, NOS Vanadium 4.22E-07 3.70E-03 5.64E-06 4.94E-02 Hydrogen chloride 2.11E-04 1.85E+00 Hydrogen Fluoride 2.41E-04 2.11E+00 Sulfur dioxide 2.41E-03 2.11E+01 1.47E-03 1.29E+01 In addition to these project emissions, there will be reductions in emissions resulting from retirement of the existing incinerator, Reductions in potential criteria pollutant em fissions are i m m arized below: Criteria Air Pollutant Emissions Reductions from Retiring Existing Sludge Incinerator Air Pollutant Lb/hr Ton/yr Carbon Monoxide -0.373 -1.63 Nitrogen Oxides -0.603 -2.64 Particulate Matter (PM, PM1O, PM2.5) -0.076 -0.33 Sulfur Dioxide -0.133 -0.58 Volatile Organic Compounds -0.15 -0.66 SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 10 of 28 The existing incinerator emits many of the same air toxics as the proposed pyrolysis units. Emission reductions for arsenic and chromium, two toxic air pollutants of particular significance for this project, are summarized below: Arsenic and Chromium Emissions Reductions from Retiring Existing Sludge Incinerator Air Pollutant Lb/hr Lb/yr Arsenic -0.0000245 -0.2146 Chromium -0,0000146 -0.1279 Hexavalent Chromium -0.0000015 -0.0128 b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. No. c. Proposed measures to reduce or control emissions or other impacts to air, if any: The existing odor control system will be retrofit to accommodate the additional required odor control capacity. Any temporary handling of sludge onsite will be performed with connections to the existing odor control system. 3. Water a. Surface Water: 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 an provide names. If appropriate, state what stream or river it flows into. To the south of the plant is an existing wetland. The project will not affect the wetland. 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 require work within the existing treatment plant site and within existing treatment plant building footprint. Both the site and the existing buildings are within 100 ft of the wetland to the south. See figure below. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 11 of 28 Art Works E N a w - T cD 1 r - • - -ti g) Pp- Q) m r ap i ==t — stewater 3l�---- ----T--1 C O y ` = Alder St a 0 D Northern -most boundary of the Edmonds Marsh 1 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. Not applicable to this project. 4) Will the proposal require surface water withdrawals or diversions? Give 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. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 12 of 28 See below figure for the 100-year floodplain extents (purple) and the relative location of the site (existing WWTP). 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. b. Ground Water: 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 general description, purpose, and approximate quantities if known. In SEPA Environmental checklist (WAC 197.11-960) July 2016 Page 13 of 28 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: 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. Not applicable to this project. 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. All stormwater flow onsite during and after construction will be contained onsite and directed to the in -plant pump station and treated with the treatment plant flows. 2) Could waste materials enter ground or surface waters? If so, generally describe. 20 3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, describe. M d. Proposed measures to reduce or control surface, ground, and runoff water, and drainage pattern impacts, if any: Surface, ground, and runoff water will be captured within the existing VVVVI_P site and treated onsite. The project will not affect drainage patterns. 4. Plants 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 SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 14 of 28 Orchards, vineyards or other permanent crops. wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other water plants: water lily, eelgrass, milfoil, other _X_other types of vegetation — general landscape vegetation b. What kind and amount of vegetation will be removed or altered? None. c. List threatened and endangered species known to be on or near the site. Unknown. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: None. e. List all noxious weeds and invasive species known to be on or near the site. None expected as this is an existing improved site. 5. Animals a. List any birds and other animals which 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: mammal: deer, bear, elk, beaver, other: fish: ass, salmon, trout, herring, shellfish, other Crows and other various types of birds, squirrels, hummingbirds, rabbits, rats and anything native to a wetland. b. List any threatened and endangered species known to be on or near the site. Unknown. c. Is the site part of a migration route? If so, explain. Unknown. d. Proposed measures to preserve or enhance wildlife, if any: SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 15 of 28 None. e. List any invasive animal species known to be on or near the site. Unknown & Energy and Natural Resources 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. This is a significant energy reduction project however the finished project will use electrical energy and natural gas to power and heat the proposed system. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No b. 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: Reduction of electrical usage, reduction of diesel fuel, reduction of truck traffic and reduction of material disposed of in the landfill. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. As there would be site construction with heavy machinery and equipment, there would be some level of risk associated with damaged machinery causing spills of oil, coolant or other fluids. That would also involve some small risk of fire or explosion due to the use of combustible fuels. 1) Describe any known or possible contamination at the site from present or past uses. None known. 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. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 16 of 28 There Is an existing underground diesel fuel storage tank In the parking lot There is a buried natural gas service line to the site. 3) Describe any toxic or hazardous chemicals that might be stored, used, or produced clueing the project's development or construction, or at any time during the operating life of the project. None known 4) Describe special emergency services that might be required. None known 5) Proposed) measures to reduce or control environmental health hazards, if any: None expected b. Noise I) What types of noise exist in the area which may affect your project ('for example: traffic, equipment, operation, other)? Automobile traffic and ferry terminal 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. Typical construction noise from heavy equipment including potentially excavators bulldozers, backhoe-loaders or cranes. Dump trucks will haul material. Including rock riprap and excess soil materials, to and from the site. 3) Proposed measures to reduce or control noise impacts, if any: None All construction will occur in accordance with the City of Edmonds code. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? III the proposal affect current land uses on nearby or adjacent properties? If so, describe. The current use of the site is a waste water treatment plant and this will not change. No, the proposal will not affect nearby 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 as a result of the proposal, if any? If resource lands have not SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 17 of 28 been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or non -forest use? 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: c. Describe any structures on the site. A new structure will be built and placed between two current buildings and a primary clarifier (see figures provided.). d. Will any structures be demolished? If so, what? A concrete wall will be removed and minimal modifications to existing structures will be made for the relocation of doors and access. e. What is the current zoning classification of the site? The WWTP is zoned as Public Use. f. What is the current comprehensive plan designation of the site? WVVTP (wastewater treatment plant). g. If applicable, what is the current shoreline master program designation of the site? Unknown. � N --r _\ � �� �,._ � Y. ,v—� J i ti' h. Has any part of the site been classified as a critical area by the city or county? If so, specify. Unknown. i. Approximately how many people would reside or work in the completed project? 16. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any: Not applicable. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 18 of 28 L. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: Not applicable. m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any: Not applicable. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. Not applicable. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. Not applicable. c. Proposed measures to reduce or control housing impacts, if any: Not applicable. 10. Aesthetics a, a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? �J The tallest height is 26.67 feet, which is 6.67 feet taller than the existing tallest height. f "XW w 11f � �"J- 7 / Building design is not yet finalized but it is assumed the building would be steel structure CY,� �xill with steel siding. all b. What views in the immediate vicinity would be altered or obstructed? J Views will not be altered. C. Proposed measures to reduce or control aesthetic impacts, if any: New building will match current architecture. 11. Light and Glare SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 19 of 28 a. What type of light or glare will the proposal produce? What time of day would it mainly occur? Not applicable. b. Could light or glare from the finished project be a safety hazard or interfere with views? Not applicable. 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: Not applicable 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? Shopping, diving, tours, boating and parks. b. Would the proposed project displace any existing recreational uses? If so, describe. No. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: Not applicable. 13. Historic and cultural preservation 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. No. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 20 of 28 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. Not applicable. 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. Not applicable 14, Transportation 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. Vicinity and site maps of the proposed project are provided. Access to the site would be primarily from SR-104 traveling north and west from either SR-99 or Interstate 5, then from SR-104 onto Dayton eastbound and 2nd avenue S. going southbound. 1 ftw w.. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 21 of 28 Breckett s .mrltng North .. rh Aji Edmonds© Edmonds kingslan n00Er P'r error Ta;Routh . '.r.. 131 a 3 s � a s Edmonds Wastewater Wastewater Treatment • m - D 9?t 4 r:Sh�ellebergerEk�-- luw�02Cm.��y � � �, •� � '•• le Edmo^Ar 3- g' 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? Yes — the nearest bus is 1 block away. c. How many additional parking spaces would the completed project or non -project proposal have? How many would the project or proposal eliminate? The project proposes to eliminate 8 non-public parking spaces on 'V\NVTP property These parking spaces are not open to the public. d. 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. e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 22 of 28 f. 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 non -passenger vehicles). What data or transportation models were used to make these estimates? Regarding temporary biosolids disposal during project construction which will affect truck traffic in the vicinity. For approximately 6-months the plant will not have the ability to process biosolids. A study and analysis were performed by BHC Consultants entitled "TEMPORARY BIOSOLIDS DISPOSAL OPTIONS ANALYSIS TECHNICAL MEMORANDUM" dated 10/12/2018. Following are excerpts from that study used to quantify those traffic impacts: The purpose of the technical memorandum is to evaluate temporary biosolids disposal options to be implemented at the WWTP during construction of the Carbon Recovery Project The evaluation herein is intended to outline which temporary biosolids disposal options are available to the City and then assess their feasibility and preliminary costs. During construction, a temporary biosolids disposal strategy will be required to maintain WWTP operation and compliance with its permits. The WWTP is capable of storing biosolids within the system for short periods (typically a matter of hours). However, it is anticipated that temporary biosolids processing will be required for several months, possibly up to a year, due to the expected construction schedule for the WWTP Carbon Recovery Project. The estimated WWTP biosolids production as determined in the Basis of Design Technical Memorandum (BOD Tech Memo), June 2018 is presented in Table 1. The study determined the most practical option is landfilling dewatered sludge Landfilling is limited to the disposal of dewatered sludge from the WW1"P's screw presses in a landfill. The initial step in considering landfilling dewatered sludge includes attaining approval from the landfill site's local Department of Health (DOH) and the Department of Ecology (Ecology). Two landfills were identified as potential disposal sites: Cedar Hills Regional Landfill in King County (operated by King County) and Roosevelt Landfill in Klickitat County (operated by Republic Services, Inc.[RSI]). Disposal at Cedar Hills Regional Landfill was deemed infeasible as it is generally only practiced as an emergency procedure by King County, and approval is only given after all other options are exhausted by the entity requesting disposal. Additionally, King County gives preference to entities seeking disposal that are within King County. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 23 of 28 Furthermore, disposal at the Cedar Hills Regional Landfill will require that the site be specially prepared for acceptance of the biosolids, which will require a financial commitment from the City that cannot be estimated at this time. For these reasons landfilling costs at Cedar Hills Regional Landfill were not developed, as the option was deemed infeasible. Landfilling biosolids is more commonly practiced at the Roosevelt Landfill. When contracted to accept biosolids landfilling, RSI coordinates approval from Klickitat County Department of Health with typical approval within the same week. In order to dispose of biosolids at the Roosevelt Landfill, the City will need to provide an Ecology approval letter from the Solid Waste Management Program. The City will also need to provide biosolids testing results for full volatiles, full semi volatiles, Resource Conservation and Recovery Act (RCRA) 8 Metals and polychlorinated biphenyl (PCB) testing prior to disposal. This process usually can be completed within a couple of days. RSI can provide 27-ton capacity containers for disposal. An estimate of landfilling costs at the Roosevelt Landfill is summarized in Table 3. Landfilling dewatered sludge will result in approximately one truck per day leaving the WWTP (containers can accommodate 27 tons and WWTP is expected to produce up to 21.4 tons of wet sludge per day). g. 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. See narrative in item F above. h. Proposed measures to reduce or control transportation impacts, if any: None expected. 15. Public Services 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. Not applicable. b. Proposed measures to reduce or control direct impacts on public services, if any. Not applicable. 16. Utilities SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 24 of 28 a Circle utilities currently available at the site: J, septic system, other d. 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 existing natural gas service meter by Puget Sound Energy would likely be modified to provide a higher volume of natural gas as the primary fuel is being converted from fuel oil to natural gas. C. Signature The above answers are true d complete to the best of my knowledge. I understand that the lead agency is relyjla � off hem t make its decision. Signature: i Name of signee (�rl'J����- Jv , (,� �0 Position and Agency/Organization / )'t v Date Submitted:7_ D. Supplemental pp emental sheet for nonproject actions HELP (IT IS NOT NECESSARY to use this sheet for project actions) r 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. SEPA Environmental checklist (WAC 197-11.960) July 2016 Page 25 of 28 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? It would reduce the discharge of material to the landfill because the resultant end product will be biochar instead of the current ash produced by incineration. Biochar can — - be land applied. Proposed measures to avoid or reduce such increases are: 2. How would the proposal be likely to affect plants, animals, fish, or marine life? None expected. 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? It would reduce the use of energy for the VVVVI-P and reduce the need for landfill space Proposed measures to protect or conserve energy and natural resources are: SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 26 of 28 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? None expected. 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? None expected. 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? None expected Proposed measures to reduce or respond to such demand(s) are: SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 27 of 28 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. This proposal does not knowingly conflict with any laws or requirement for the protection of the environment. It is solely intended to improve environment by reducing energy requirements and creating a useful byproduct. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 28 of 28