Loading...
HomeMy WebLinkAboutSEPA EPIC-57-91 - METRO - SOUTH OPERATING BASE UNDERGROUND TANK REPLACEMENTMETRO SOUTH OPERATING BASE UNDERGROUND TANK REPLACEMENT 12100 EAST MARGINAL WAY SOUTH EPIC 57 -91 � METR0 Municipality of MetropolitaiiSeattle Exchange Building • 821 Second Ave. • Seattle, WA 98104 -1598 RECEIVED DEC 2 1991 Cl i Y OF TUKWILA DETERMINATION OF NONSIGNIFICANCE (DNS -' South Operating Base Underground Tank Replacement Project PROJECT DESCRIPTION: This project involves removing and disposing of twenty - one (21) petroleum - product underground storage tanks with associated piping and appertenances, and installing fifteen (15) new, petroleum - product underground storage tanks with associated piping and appertenances. The tanks being removed total 120,100 gallons, while the new tanks have total capacity of 104,000 gallons. A new coalescing plate oil -water separator will be installed in the fuel -wash building, replacing an older API -type separator. A new underground, bus wash water reclamation system will be installed to reduce the likelihood of detergents reaching the storm water runoff system. PROPONENT: Municipality of Metropolitan Seattle (METRO) LOCATION OF PROPOSAL, INCLUDING STREET ADDRESS, IF ANY: 12100 East Marginal Way South Seattle, Washington 98168 LEAD AGENCY: Municipality of Metropolitan Seattle (METRO) The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under WAC 43.21C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. There is no comment period for this DNS. X This DNS is issued under 197 -11 -340 (2); the lead agency will not act on this proposal for 15 days from the date below. Comments must be submitted by December 12, 1991. DATE: November 27, 1991 RESPONSIBLE OFFICIAL: Gregory M. Bush POSITION /TITLE: Manager /Environmental Compliance Division TELEPHONE NUMBER: (206) 684 -1164 ADDRESS: 821 Second Avenue, Seattle, Washington 98104 SIGNATURE: ✓ �' on^0`%-i ,t�3 You may appeal this determination to Richard K. Sandaas, Executive Director, at Metro - 821 Second Avenue, Seattle, Washington, 98104. You should be prepared to make specific factual objections. Contact Gary Kriedt at 684 -1166 regarding the SEPA appeals procedures. ENVIRONMENTAL CHECKLIST A. BACKGROUND 1. Name of proposed project, if applicable: South Operating Base Underground Tank Replacement Project 2. Name of applicant: Municipality of Metropolitan Seattle (Metro) 3. Address and phone number of applicant and contact person: Metro 821 Second Avenue, MS 120 Seattle, WA 98104 -1598 CONTACT: Gary Kriedt, Telephone: (206) 684 -1166 4. Date checklist prepared: November 22, 1991 5. Agency requesting checklist: Metro 6. Proposed timing or schedule (including phasing, if applicable): Construction: Spring and Summer, 1992 7. Do you have any plans for future additions, expansions, or further activity related to or connected with this proposal? If yes, explain. None. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. A consultant study is currently underway to determine the presence and extent of contaminated soils adjacent to locations where existing tanks will be removed. The results of the study will be incorporated into the final version of the checklist. If contaminants are found, a remediation plan will be developed which will be incorporated into the construction contract. 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. Grading Permit, City of Tukwila UST Permit, Tukwila Fire Dept. 1 • • 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). This project involves removing and disposing of twenty-one (21) petroleum- product underground storage tanks with associated piping and appertenances, and installing fifteen (15) new, petroleum - product underground storage tanks with associated piping and appertenances. The tanks being removed total 120,100 gallons, while the new tanks have total capacity of 104,000 gallons. Specifically, the following tanks will be removed: 312000 gallon diesel fuel tanks 112000 gallon unleaded gasoline tank 110000 gallon diesel fuel tank 18000 gallon lube oil tank 5 2000 gallon waste oil tanks 16000 gallon anti- freeze concentrate tank 2 6000 gallon transmission fluid tanks 3 6000 gallon diesel fuel tanks 16000 gallon lube oil tank 11000 gallon diesel fuel tank 2 550 gallon diesel fuel tanks Specifically, the following new tanks will be installed: 312000 gallon diesel fuel tanks 1 12000 gallon unleaded gasoline tank 18000 gallon lube oil tank 2 6000 gallon transmission fluid tanks 16000 gallon lube oil tank 2 6000 gallon diesel fuel tanks 16000 gallon anti- freeze concentrate tank 3 2000 gallon waste oil tanks 16000 gallon diesel fuel tank. New tanks will be double -walled with corrosion protection, interstitial monitoring, and overfill protection and containment. A new coalescing plate oil -water separator will be installed in the fuel -wash building, replacing an older API -type separator. A new underground, bus wash water reclamation system will be installed to reduce the likelihood of detergents reaching the storm water runoff system. 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. 12100 East Marginal Way South Seattle, Washington 98168 2 • • 12100 East Marginal Way South Seattle, Washington 98168 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)? N /A. 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 prime farmland. Urban fill overlying consolidated rock. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. Existing pea gravel will be used to fill in around new tanks if there is no contamination. Contaminated pea gravel or fill material will be removed and replaced with clean fill material. Where tanks are removed but not replaced, clean urban fill will be used. No grading will take place. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. No. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? g. The project will result in no net change in the percentage of impervious surface of the site. It is currently about 95 percent impervious surface. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: None required. 2. Air a. What types of emissions to the air would result from the proposal (i.e., dust, automobile emissions, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. 3 • • During construction, exhaust emissions and some dust would result, on a temporary basis, from the operation and movement of gas-and diesel- powered construction vehicles. 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: Construction equipment would have standard emission control devices. Other measures to minimize air quality impacts would include avoiding prolonged idling of construction vehicles, using electric rather then fossil -fuel burning equipment where appropriate, sweeping dust and dirt, and sprinkling dusty areas with water (if permitted). 3. Water a. Surface: 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, or wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. The Duwammish River is approximately 400 yards east of the project site. 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. However, work will occur within 200' of the on -site retention pond, which , in turn, feeds into the Duwammish River. 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 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. b. Ground: 4 • • 1) Will ground water be withdrawn, or will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. Where contamination if found, ground water will be withdrawn from the area surrounding the existing tanks prior to the installation of the new tanks. The amount of groundwater that may be withdrawn will not be known until after construction begins. 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. None. c. Water Runoff (including storm water): 1) Describe 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. Stormwater runoff at the site is from buildings and impervious parking lot surfaces. Runoff flows into an underground drainage system, through a coalescing plate oil /water separator, and into a retention pond on the east side of the site. Water from the retention pond feeds into the Duwammish River. 2) Could waste materials enter ground or surface waters? If so, generally describe. During storm conditions with high volumes of stormwater runoff, some stormwater with petrochemicals and other contaminants could flow through the retention pond too rapidly to allow sufficient filtering or settling of contaminants. These contaminants could then enter the Duwammish River. d. Proposed measures to reduce or control surface, ground and runoff impacts, if any: See response to c.1) above. All of the new tanks will be double -walled with corrosion protection, interstitial monitoring, and overfill protection and containment. The piping will be made of steel and will be in fiberglass sleeving for secondary containment. 4. Plants a. Check or circle types of vegetation found on the site: X deciduous tree: alder, maple, aspen, other evergreen tree: fir, cedar, pine, other X shrubs X grass pasture crop or grain X wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other 5 • • X water plants: water lily, eelgrass, milfoil, other other types of vegetation b. What kind and amount of vegetation will be removed or altered? None. c. List threatened or 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 None. 5. Animals a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site: birds: hawk, heron, eagle, songbirds, other: mammals: deer, bear, elk, beaver, other: fish: bass, salmon, trout, herring, shellfish, other: b. List any threatened or 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. 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, woodstove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Energy consumed during construction would be diesel, gas and electric power associated with construction equipment and vehicles for tank removal, tank replacement, backfilling and paving activities. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. 6 • • c. What kind 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 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. During tank removal and tank replacement activities, there would be some danger of exposure to soils contaminated with petrochemicals and antifreeze. After completion of the project, environmental health risks would be minimal. All of the new tanks will be double - walled with corrosion protection, interstitial monitoring, and overfill protection and containment. The piping will be made of steel and will be in fiberglass sleeving for secondary containment. The new coalescing plate oil -water separator, an improvement over the older API -type separator, would reduce environmental health risks. The new underground, bus wash water reclamation system will reduce the likelihood of detergents reaching the storm water runoff system thereby reducing environmental health risks. 1) Describe special emergency services that might be required. None. 2) Proposed measures to reduce or control environmental health hazards, if any: See response to 7.a. above. 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. There would short -term noise from construction equipment and activities during tank removal, tank installation, and while the area is backfilled and paved over. After construction, the project would not result in additional noise. Construction noise would occur between 7:00 a.m. and 4:00 p.m. Monday through Friday. 3) Proposed measures to reduce or control noise impacts, if any Construction equipment would have standard muffler equipment. 7 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? The current use of the site is as a transit operating base. b. Has the site been used for agriculture? If so, describe. No. c. Describe any structures on the site. The site has a maintenance building, operations building, storage building, unit repair building, and a fuel /wash building. d. Will any structures be demolished? If so, what? No. e. What is the current zoning classification of the site? The site is zoned Heavy Industrial (M2). f. What is the current comprehensive plan designation of the site? The site is designated Public Facility. g. If applicable, what is the current shoreline master program designation of the site? N /A. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. No. i. Approximately how many people would reside or work in the completed project? Approximately 585 employees work at the base (approximately 440 drivers, 20 staff, and 125 mechanics). The proposed project would not affect the number of permanent employees at the site. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any: None. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any 8 The proposal is compatible with existing and projected land uses and plans. 9. Housing 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. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennae; what is the principal exterior building material(s) proposed? N /A. b. What views in the immediate vicinity would be altered or blocked? None. c. Proposed measures to reduce or control aesthetic impacts, if any: None. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. b. Could light and 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. 12. Recreation 9 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. No. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: None. 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state or local preservation registers known to be on or next to the site? If so, generally describe. No. b. Generally describe any landmarks or evidence of historic, archaeological, scientific or cultural importance known to be on or next to the site. None. c. Proposed measures to reduce or control impacts, if any None. 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. Access to the site is via East Marginal Way South. No new access to the site is proposed. b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Yes. Metro routes 34, 124 and 246 serve the site. c. How many parking spaces would the completed project have? How many would the project eliminate? • None; none. d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). No. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. 10 • • No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. None. g. Proposed measures to reduce or control transportation impacts, if any: None. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. No. b. Proposed measures to reduce or control direct impacts on public services, if any: None. 16. Utilities a. Circle the utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. 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. Existing utilities are sufficient, and no new demands on utilities are anticipated. C. SIGNATURE 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. Signature: Date Submitted: JI-z - q1 11