HomeMy WebLinkAboutEx_02_SEPA_ChecklistSEPA 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
RECEIVED
05/29/2025
amorganroth
PLANNING DIVISION
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A. Background
1. Name of proposed project, if applicable:
Walker Subaru Service Center
2. Name of applicant:
AHBL
3. Address and phone number of applicant and contact person:
2215 N. 30th Street #300
Tacoma, WA 98403
Scott Kaul, Associate Principal
(253) 383-2422
4. Date checklist prepared:
March 27, 2025
5. Agency requesting checklist:
City of Renton
6. Proposed timing of schedule (including phasing, if applicable):
Construction will commence upon issuance of site development permit.
7. Do you have any plans for future additions, expansion, or further activity related to or
connected with this proposal? If yes, explain.
Not at this time.
8. List any environmental information you know about that has been prepared, or will be
prepared, directly related to this proposal.
SEPA Checklist, Traffic Impact Analysis, Geotechnical Report
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.
Not to our knowledge.
10. List any government approvals or permits that will be needed for your proposal, if known.
SEPA determination, Site Plan Review, Conditional Use Permit, Site Development Permit,
Building Permit, Modification Requests
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 project proposes a 14,417 square foot service shop addition and a 1,176 square foot
drive through addition to the existing building. The addition will add new service bay stalls
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and new parts storage area. The parking provided for the redeveloped site will comply with
the minimum parking requirement.
12. Location of the proposal. Give sufficient information for a person to understand the
precise location of your proposed project, including a street address, if any, and section,
township, and range, if known. If a proposal would occur over a range of area, provide the
range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and
topographic map, if reasonably available. While you should submit any plans required by
the agency, you are not required to duplicate maps or detailed plans submitted with any
permit applications related to this checklist.
The project is located at 519 SW 12th Street in Renton, Washington. The parcel numbers are
334040-4265 and 334040-4148 and approximately 2.13 acres in size.
B. Environmental Elements
1. Earth
Find help answering earth questions2
a. General description of the 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 onsite is where the existing pond is with an approximate 62% slope.
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 geotechnical report prepared by Migizi Group, Inc. dated December 11,
2024, the underlying soils consist of very soft silts and sands, grading to coarser,
medium dense sands and gravels at 23 feet.
d. Are there surface indications or history of unstable soils in the immediate vicinity? If
so, describe.
No, not to our knowledge.
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.
2 https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-
guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-earth
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All grading would be consistent with applicable City of Renton regulations. The
project is in preliminary design, but it is anticipated approximately 300 cy of cut
and 300 cy of fill for a balanced site. Any imported structural fill material will
come from a clean site.
f. Could erosion occur because of clearing, construction, or use? If so, generally describe.
Erosion may occur as a result of stripping and clearing existing vegetated ground
and grading for the stormwater facility and utility work. All construction activity
will conform to best management practices for erosion and sediment control per
the 2022 City of Renton Surface Water Design Manual.
g. About what percent of the site will be covered with impervious surfaces after project
construction (for example, asphalt or buildings)?
The project is in preliminary design but it is anticipated that after the project has
been developed there will be approximately 1,200 sf of new impervious surface
for a total 83,000 sf of impervious, for a total 89% impervious coverage.
h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any.
A properly developed, constructed and maintained erosion control plan,
consistent with The City of Renton Surface Water Design Manual best
management practices, as well as other development regulations, will be
required and provided for this project. This plan will include maintenance of
adequate ground cover, construction stormwater flow control measures, silt
fencing, perimeter runoff protection, and temporary sedimentation controls.
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.
The proposed project would likely result in minimal temporary increase in air
pollution from engine emissions, dust, and asphalt paving that are common
during construction. With adherence to applicable best management practices
during construction, no significant air quality impacts from construction are
anticipated. Moderate traffic increases resulting from the project would result in
a minor increase in carbon monoxide levels beyond what is presently occurring,
and significant air quality impacts are not anticipated.
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b. Are there any off-site sources of emissions or odor that may affect your proposal? If
so, generally describe.
There are no known off-site sources of emissions or odors that will affect the project.
c. Proposed measures to reduce or control emissions or other impacts to air, if any:
Air quality is regulated by three agencies: the US Environmental Protection
Agency (EPA), the Washington State Department of Ecology (DOE), and the
Puget Sound Clean Air Agency. Each agency has established regulations that
govern the concentration of pollutants and contaminant emissions from air
pollution sources. Proposed construction of the project will be in accordance
with these regulations.
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, wetlands)? If
yes, describe type and provide names. If appropriate, state what stream or river it
flows into.
There are no surface water bodies on or in the vicinity of the 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, see response to previous question.
3. Estimate the amount of fill and dredge material that would be placed in or
removed from surface water or wetlands and indicate the area of the site that
would be affected. Indicate the source of fill material.
No, doesn’t apply.
4. Will the proposal require surface water withdrawals or diversions? Give a general
description, purpose, and approximate quantities if known.
The project will not require surface water withdrawals or diversions.
5. Does the proposal lie within a 100-year floodplain? If so, note location on the site
plan.
No, according to FEMA flood map 53033C0978G, the site is not in the 100-year
floodplain.
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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.
The project does not involve any discharges of water material to surface waters.
b. Ground:
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.
The project will not directly withdraw water from wells. The site is currently
served by the City of Renton.
2. Describe waste material that will be discharged into the ground from septic tanks
or other sources, if any (domestic sewage; industrial, containing the following
chemicals…; agricultural; etc.). Describe the general size of the system, the number
of such systems, the number of houses to be served (if applicable), or the number
of animals or humans the system(s) are expected to serve.
No waste material will be discharged to the ground. The project is connected to
City of Renton sanitary sewer system.
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 primary source of runoff is stormwater. The project proposes utilizing the
existing bioswale and detention pond for stormwater management and treatment.
2. Could waste materials enter ground or surface waters? If so, generally describe.
The project could increase the potential for waste materials associated
with additional vehicle runoff containing oil, grease and other typical auto
by-products. Treatment facilities will be provided to conform to the Pierce
County Storm and Site Development Manual.
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:
Stormwater will be conveyed to the onsite stormwater facility for treatment and
detention.
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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
☐ 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?
Some landscaped areas will be removed within the building addition area and
potentially around the site as required to install buried utilities.
c. List threatened and endangered species known to be on or near the site.
There are no known threated or endangered species on or near the site.
d. Proposed landscaping, use of native plants, or other measures to preserve or enhance
vegetation on the site, if any.
Any new landscaping will be in accordance with RMC 4-4-070.
e. List all noxious weeds and invasive species known to be on or near the site.
None known.
5. Animals
a. List any birds and other animals that have been observed on or near the site or are
known to be on or near the site.
Examples include:
• Birds: hawk, heron, eagle, songbirds, other: Crows
• Mammals: deer, bear, elk, beaver, other: Mice, Rabbits
• Fish: bass, salmon, trout, herring, shellfish, other:
b. List any threatened and endangered species known to be on or near the site.
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None known.
c. Is the site part of a migration route? If so, explain.
The site is located within the Pacific Flyway, a north/south route used by
migratory bird species travelling between Alaska and South America.
d. Proposed measures to preserve or enhance wildlife, if any.
Planted trees and existing vegetation will provide habitat areas for birds and small
mammals.
e. List any invasive animal species known to be on or near the site.
There are no invasive animal species at or near the site.
6. 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.
The project will use electricity for heating and power.
b. Would your project affect the potential use of solar energy by adjacent properties? If
so, generally describe.
No, not to our knowledge.
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.
The project will adhere to the State Energy Code which will ensure it complies
with the latest energy conservation measures to reduce energy impacts.
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 because of this
proposal? If so, describe.
The only hazardous material that will be onsite will be automotive oil – both new and
used/waste. Both will be contained/stored and dispensed and collected in proprietary
systems. A spill management and clean-up procedures will be posted onsite.
1. Describe any known or possible contamination at the site from present or past
uses.
None known.
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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 known.
3. Describe any toxic or hazardous chemicals that might be stored, used, or produced
during the project's development or construction, or at any time during the
operating life of the project.
The only hazardous material that will be onsite will be automotive oil – both new
and used/waste. Both will be contained/stored and dispensed and collected in
proprietary systems. A spill management plan and clean-up procedures will be
posted onsite.
4. Describe special emergency services that might be required.
If a spill cannot be managed special emergency services may be needed.
5. Proposed measures to reduce or control environmental health hazards, if any.
Employees will be trained and a spill management plan and clean up procedure will
be posted onsite.
b. Noise
1. What types of noise exist in the area which may affect your project (for example:
traffic, equipment, operation, other)?
The only noises that exist in the area is noise from traffic on existing roadways, but
this will not affect the project.
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)?
Short-term Construction/Site Preparation Noise
On a short term basis, noise may be emitted from heavy equipment used for
land clearing in preparation of excavation activities and on-site construction of
improvements. Construction noise is exempt from Washington State’s
environmental noise regulations during daytime hours (7 AM to 10 PM), and
construction activities will be limited to daytime hours. The temporary nature
of the construction coupled with restriction to reasonable daytime hours
would reduce any potential noise impacts to be less than significant.
Long-Term Operational Noise
In the long term, the project will introduce some new noise sources to the
surrounding area which will be primarily related to traffic.
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3. Proposed measures to reduce or control noise impacts, if any:
Measures to minimize noise include providing landscaped buffers to screen the
project from adjacent uses.
8. Land and shoreline use
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 an automobile service center. To the north is SW 12th Street and
commercial property, to the south is I-405, to the west is Seneca Avenue SW and
commercial property and to east is Lind Avenue SW and commercial property.
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, not to our knowledge.
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, not to our knowledge.
c. Describe any structures on the site.
There are two buildings onsite.
d. Will any structures be demolished? If so, what?
The building in the NE corner of the site will be demolished.
e. What is the current zoning classification of the site?
The site is zoned Commercial Arterial (CA).
f. What is the current comprehensive plan designation of the site?
Commercial Mixed Use (CMU)
g. If applicable, what is the current shoreline master program designation of the site?
The site does not have a shoreline master program designation.
h. Has any part of the site been classified as a critical area by the city or county? If so,
specify.
No, not to our knowledge.
i. Approximately how many people would reside or work in the completed project?
Currently there are 59 employees. The new building addition will likely add another
eleven employees, for a total of 70 employees.
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j. Approximately how many people would the completed project displace?
None.
k. Proposed measures to avoid or reduce displacement impacts, if any.
There are no displacement impacts, so no special measures are proposed.
l. Proposed measures to ensure the proposal is compatible with existing and projected
land uses and plans, if any.
The project is permitted outright in the CA zone and is compatible with surrounding
uses,
m. Proposed measures to reduce or control impacts to agricultural and forest lands of
long-term commercial significance, if any:
The proposal will not have any impacts on agricultural and forest lands.
9. Housing
a. Approximately how many units would be provided, if any? Indicate whether high,
middle, or low-income housing.
The project is commercial so no housing units will be provided.
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:
No special measures are proposed.
10. Aesthetics
a. What is the tallest height of any proposed structure(s), not including antennas; what is
the principal exterior building material(s) proposed?
The tallest height will not exceed what is permitted in the CA zone.
b. What views in the immediate vicinity would be altered or obstructed?
None to our knowledge.
c. Proposed measures to reduce or control aesthetic impacts, if any:
Perimeter landscaping is provided.
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11. Light and glare
a. What type of light or glare will the proposal produce? What time of day would it
mainly occur?
The proposal includes exterior and interior lighting and lighting in the parking areas.
Lighting hours will vary depending on the time of year. Lighting will be designed to
reduce glare.
b. Could light or glare from the finished project be a safety hazard or interfere with
views?
No. All exterior lighting will be directed downwards to avoid light spillage onto adjacent
properties and roadways.
c. What existing off-site sources of light or glare may affect your proposal?
The existing sources of light will not have adverse impacts on the proposed use.
d. Proposed measures to reduce or control light and glare impacts, if any:
All lighting will be directed downwards and shielded to minimize light and glare.
12. Recreation
a. What designated and informal recreational opportunities are in the immediate
vicinity?
The project is located in a predominately commercial area so there are no designated
recreation areas in the immediate vicinity.
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:
No special measures are proposed.
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, not to our knowledge.
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.
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No designated landmarks or known archeological or scientific artifacts are
known to be on the property.
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.
The Washington State Department of Archaeology and Historic Preservation Historic
Property Inventory Report was reviewed to determine there are no listings near the
project site.
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.
If cultural or archeological objects are found during site preparation work, the
Washington State Department of Archaeology and Historic Preservation will be notified
and appropriate measures will be taken.
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.
The site is bounded by SW 12th Street to the north and Lind Avenue SE to the east. The
site will continue using its existing access points with three driveways off SW 12th Street,
and two driveways off Seneca Avenue SW.
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?
King County Metro has transit available at SW Grady Way and Lind Avenue SW, less than
one mile away.
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).
Frontage improvements will consist of upgrading existing driveway approaches to meet
City and ADA standards. Additionally, a watermain in the north side of 12th Street will
be upgraded from a 6-inch line to a 10-inch line to meet fire flow requirements.
d. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or
air transportation? If so, generally describe.
No.
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e. How many vehicular trips per day would be generated by the completed project or
proposal? If known, indicate when peak volumes would occur and what percentage of
the volume would be trucks (such as commercial and nonpassenger vehicles). What
data or transportation models were used to make these estimates?
According to the Traffic Impact Analysis prepared by Heath and Associated dated
February 19, 2025, the completed project will 413 new average weekday daily trips with
27 AM peak hour trips and 27 PM peak hour trips.
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:
Payment of traffic impact fees will mitigate any impacts.
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.
There may be a need for fire or police services in the event of a fire or accident.
b. Proposed measures to reduce or control direct impacts on public services, if any.
Impacts to the road network due to the increase in vehicular traffic will be mitigated
through the payment of traffic impact fees. Property taxes collected on the property
will reduce impacts to public services.
16. Utilities
a. Circle 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.
The project is already connected to utilities. a watermain in SW 12th Street will be
upsided from 6’ to 10” to provide adequate fire flow.
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.
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X
Type name of signee: Scott Kaul
Position and agency/organization: Owner agent, AHBL Engineers
Date submitted: 3/27/2025
D. Supplemental sheet for nonproject actions
Find help for the nonproject actions worksheet3
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?
• Proposed measures to avoid or reduce such increases are:
2. How would the proposal be likely to affect plants, animals, fish, or marine life?
• Proposed measures to protect or conserve plants, animals, fish, or marine life are:
3. How would the proposal be likely to deplete energy or natural resources?
• Proposed measures to protect or conserve energy and natural resources are:
3 https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-
guidance/sepa-checklist-section-d-non-project-actions
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4. How would the proposal be likely to use or affect environmentally sensitive areas or
areas designated (or eligible or under study) for governmental protection, such as
parks, wilderness, wild and scenic rivers, threatened or endangered species habitat,
historic or cultural sites, wetlands, floodplains, or prime farmlands?
• Proposed measures to protect such resources or to avoid or reduce impacts are:
5. How would the proposal be likely to affect land and shoreline use, including whether it
would allow or encourage land or shoreline uses incompatible with existing plans?
• Proposed measures to avoid or reduce shoreline and land use impacts are:
6. How would the proposal be likely to increase demands on transportation or public
services and utilities?
• Proposed measures to reduce or respond to such demand(s) are:
7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws
or requirements for the protection of the environment.
Docusign Envelope ID: A8A5BFC1-1B8B-45C4-AB62-B0960DC02697