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SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 1 of 15
SEPA ENVIRONMENTAL CHECKLIST
Purpose of checklist:
Governmental agencies use this checklist to help determine whether the environmental impacts of your
proposal are significant. This information is also helpful to determine if available avoidance, minimization
or compensatory mitigation measures will address the probable significant impacts or if an environmental
impact statement will be prepared to further analyze the proposal.
Instructions for applicants:
This environmental checklist asks you to describe some basic information about your proposal. Please
answer each question accurately and carefully, to the best of your knowledge. You may need to consult
with an agency specialist or private consultant for some questions. You may use “not applicable” or
"does not apply" only when you can explain why it does not apply and not when the answer is unknown.
You may also attach or incorporate by reference additional studies reports. Complete and accurate
answers to these questions often avoid delays with the SEPA process as well as later in the decision-
making process.
The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of
time or on different parcels of land. Attach any additional information that will help describe your proposal
or its environmental effects. The agency to which you submit this checklist may ask you to explain your
answers or provide additional information reasonably related to determining if there may be significant
adverse impact.
Instructions for Lead Agencies:
Please adjust the format of this template as needed. Additional information may be necessary to
evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse
impacts. The checklist is considered the first but not necessarily the only source of information needed to
make an adequate threshold determination. Once a threshold determination is made, the lead agency is
responsible for the completeness and accuracy of the checklist and other supporting documents.
Use of checklist for nonproject proposals:
For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable
parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). Please
completely answer all questions that apply and note that the words "project," "applicant," and "property or
site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead
agency may exclude (for non-projects) questions in Part B - Environmental Elements –that do not
contribute meaningfully to the analysis of the proposal.
A. Background [HELP]
1. Name of proposed project, if applicable:
Excel Public Charter School
2. Name of applicant:
RECEIVED
03/06/2019
amorganroth
PLANNING DIVISION
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Anna Johnson
Washington Charter School Development
3. Address and phone number of applicant and contact person:
107 Spring Street, Suite 4025
Seattle, WA 98104
503-970-7487
4. Date checklist prepared:
2/14/2019
5. Agency requesting checklist:
City of Renton Community & Economic Development
6. Proposed timing or schedule (including phasing, if applicable):
Construction estimated to occur 9/2019 through 6/2020
7. Do you have any plans for future additions, expansion, or further activity related to or
connected with this proposal? If yes, explain.
No
8. List any environmental information you know about that has been prepared, or will be
prepared, directly related to this proposal.
Phase 1 Environmental Report (GeoEngineers, DRAFT report dated January 25, 2019.
Compltion of final report is pending)
Geotechnical Report
Asbestos/Lead survey of existing building
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.
No.
10. List any government approvals or permits that will be needed for your proposal, if known.
Conditional Use Permit, Building Permit, Demolition Permit, Electrical Permit, Mechanical
Permit.
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.)
Renovation of existing 40,000 SF building for a charter middle and high school.
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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 16950 116th Ave SE, Renton, WA 98058, in the existing Cascade
Village shopping center. The building is the eastern-most building on the site.
B. Environmental Elements [HELP]
1. Earth [help]
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)?
Approximately 18%
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.
Silty sand with gravel over weathered glacial till over undisturbed glacial till.
d. Are there surface indications or history of unstable soils in the immediate vicinity? If so,
describe.
No
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.
Excavation and backfill of for building structural modifications (footings) is estimated to consist of less
than 100 cubic yards.
f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe.
The potential for erosion during construction operations will be mitigated through the
implementation of Erosion and Sediment Control Best Management Practices as part of the
construction requirements. There is no potential for erosion to occur as a result of use as all
disturbed areas will be stabilized through permanent plantings or surfacing.
g. About what percent of the site will be covered with impervious surfaces after project
construction (for example, asphalt or buildings)?
75%
h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any:
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Amendment of all disturbed areas to meet the DOE post constrcution soild depth requirements
will be implemented. In addition, exisitng impervious area within the project site will be reduced.
2. Air [help]
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.
Construction-related equipment during construction.
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 activities will be subject to all applicable requirements.
3. Water [help]
a. Surface Water: [help]
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.
No.
2) Will the project require any work over, in, or adjacent to (within 200 feet) the described
waters? If yes, please describe and attach available plans.
No.
3) Estimate the amount of fill and dredge material that would be placed in or removed
from surface water or wetlands and indicate the area of the site that would be affected.
Indicate the source of fill material.
None.
4) Will the proposal require surface water withdrawals or diversions? Give 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.
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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.
No.
b. Ground Water: [help]
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.
No.
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 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.
Source of runoff will be pervious and impervious on site areas, including roofs, hardscape and
planted areas. Collection will be through a combination of existing and new structures, pipes
and surface flow, with release to the public piped storm system.
2) Could waste materials enter ground or surface waters? If so, generally describe.
No.
3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If
so, describe.
No.
d. Proposed measures to reduce or control surface, ground, and runoff water, and drainage
pattern impacts, if any:
Impervious surface coverage within the area of work will be reduced as a result of the project,
thereby reducing the effects of previous land conversion on the project site.
4. Plants [help]
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a. Check the 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
____ 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
b. What kind and amount of vegetation will be removed or altered?
Approximately 8,000 square feet of existing ground cover and low shrubs will be replaced with
new plantings, consisting of ground cover, shrubs, grass, and new trees. New plantings
will consist primarily of native, drough tolerant vegetation.
c. List threatened and endangered species known to be on or near the site.
Not known.
d. Proposed landscaping, use of native plants, or other measures to preserve or enhance
vegetation on the site, if any:
Landscaping will consist of plantings around the perimeter of the site within the project area of
work, and planting beds along the edge of the building and pedestrian plaza. Planting types will
be a predominantly Northwest palette requiring minimal water after initial establishment.
e. List all noxious weeds and invasive species known to be on or near the site.
Extensive areas of the site, outside the area of work, are covered in blackberry.
5. Animals [help]
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:
mammals: deer, bear, elk, beaver, other:
fish: bass, salmon, trout, herring, shellfish, other _ _______
None observed.
b. List any threatened and endangered species known to be on or near the site.
None known.
c. Is the site part of a migration route? If so, explain.
None known.
d. Proposed measures to preserve or enhance wildlife, if any:
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None.
e. List any invasive animal species known to be on or near the site.
None known.
6. Energy and Natural Resources [help]
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.
Electric heat pump heating and cooling. Gas water heating and HVAC supplemental heating.
Electrical lighting and equipment.
b. Would your project affect the potential use of solar energy by adjacent properties?
If so, generally describe.
No.
c. What kinds of energy conservation features are included in the plans of this proposal?
List other proposed measures to reduce or control energy impacts, if any:
Design to 2015 Washington State Energy Code.
7. Environmental Health [help]
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.
No.
1) Describe any known or possible contamination at the site from present or past uses.
Contamination from a former dry cleaning business, located approximately 200 feet of
the project location has been documented.
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.
Underground PSE gas lines are located at the street, with underground on-site lines
serving the existing buildings.
3) Describe any toxic or hazardous chemicals that might be stored, used, or produced
during the project's development or construction, or at any time during the operating
life of the project.
None.
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4) Describe special emergency services that might be required.
None.
5) Proposed measures to reduce or control environmental health hazards, if any:
None.
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)? Indi-
cate what hours noise would come from the site.
Construction related noises will be generated during construction.
The school will be in session during day time hours only. The school is expected to operate
between 8:00am and 3:30pm. After school programs for students are expected to operate
until 5:00pm.
3) Proposed measures to reduce or control noise impacts, if any:
Noise Generated by construction related activities will be limited to hours and levels allowed by
the City of Renton.
8. Land and Shoreline Use [help]
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 used as a shopping center, and consists of commercial and retail uses in four buildings on
the project parcel, plust two additional buildings on an adjacent parcel. The project’s building is a former
grocery store. Adjacent properties include single- and multi-family housing.
The proposal will not affect current land uses or nearby or adjacent properties.
b. Has the project site been used as working farmlands or working forest lands? If so, describe.
How much agricultural or forest land of long-term commercial significance will be converted to
other uses as a result of the proposal, if any? If resource lands have not been designated,
how many acres in farmland or forest land tax status will be converted to nonfarm or
nonforest use?
No.
1) Will the proposal affect or be affected by surrounding working farm or forest land normal
business operations, such as oversize equipment access, the application of pesticides,
tilling, and harvesting? If so, how:
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No.
c. Describe any structures on the site.
1) 25,492 SF commercial structure to remain
2) 36,872 SF commercial structure to remain
3) 1,745 SF commercial structure to remain
4) 40,547 SF commercial structure to remain with alterations (project location)
d. Will any structures be demolished? If so, what?
Approximately 1,140 square feet portion of an existing building is to be demolished as
part of this proposal.
e. What is the current zoning classification of the site?
CA (Commercial)
f. What is the current comprehensive plan designation of the site?
Commercial Mixed Use
g. If applicable, what is the current shoreline master program designation of the site?
Not Applicable.
h. Has any part of the site been classified as a critical area by the city or county? If so, specify.
No.
i. Approximately how many people would reside or work in the completed project?
525 Students and 30 Teachers will occupy the school during school hours.
j. Approximately how many people would the completed project displace?
None.
k. Proposed measures to avoid or reduce displacement impacts, if any:
Not Applicable.
L. Proposed measures to ensure the proposal is compatible with existing and projected land
uses and plans, if any:
The project will be subject to a conditional use review by the City of Renton.
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m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term
commercial significance, if any:
None.
9. Housing [help]
a. Approximately how many units would be provided, if any? Indicate whether high, mid-
dle, 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 [help]
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 portion of the building is 28’ above grade plane, with rooftop mechanical equipment
extending up to approximately 30’ above grade plane.
Principle exterior building materials will consist of metal panel siding, composite panel siding,
and storefront glazing.
b. What views in the immediate vicinity would be altered or obstructed?
None.
b. Proposed measures to reduce or control aesthetic impacts, if any:
Development standards per City of Renton Land Use Code requirements.
11. Light and Glare [help]
a. What type of light or glare will the proposal produce? What time of day would it mainly
occur?
Interior building lighting, visible through building fenestrations will operate during facility hours.
Shielded, exterior light fixtures will operate after daylight hours.
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b. Could light or glare from the finished project be a safety hazard or interfere with views?
No.
c. What existing off-site sources of light or glare may affect your proposal?
None.
d. Proposed measures to reduce or control light and glare impacts, if any:
Shielded cut-off exterior light fixtures will be used.
12. Recreation [help]
a. What designated and informal recreational opportunities are in the immediate vicinity?
CVAC Baseball Field is adjacent to the site.
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:
The project will include an outdoor recreation area for use by students.
13. Historic and cultural preservation [help]
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.
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.
Review of GIS data, City of Renton Historical Museum Website, Washington State Historic Map
archive.
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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.
None.
14. Transportation [help]
a. Identify public streets and highways serving the site or affected geographic area and
describe proposed access to the existing street system. Show on site plans, if any.
The project is bounded by 116th Ave SE to the west and SE 168th St to the north.
Vehicular access consists of driveways from SE 168th St and 116th Ave SE. Pedestrian-only
access is available to 119th Ave SE (connecting to S 170th PL). No modifications to existing
access is proposed.
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?
The site is served by King County Metro Route 906, with the nearest stops on 116th Ave SE,
immediately adjacent to the site.
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 will provide 68 parking spaces in place of 172 existing parking spaces, for a net reduction of
104 parkings spaces.
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.
No.
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 nonpassenger vehicles). What data or transportation
models were used to make these estimates?
The project is estimated to generate approximately 1,300 vehicle trips per day. The peak
volumes would occur during the morning peak hour (between about 7:15 and 8:15 a.m.) and
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the school afternoon peak hour (between about 3:00 and 4:00 p.m.). The project is estimated
to generate about 425 total vehicle trips (259 inbound, 166 outbound) during the AM peak
hour, and 305 total vehicle trips (128 inbound, 177 outbound) during the school afternoon
peak hour. Approximately 89 total vehicle trips (38 inbound, 51 outbound) are projected during
the commuter PM peak hour. Accounting for the vehicle trips eliminated by removal of the
existing supermarket use at the site, the project is expected to result in a net decrease of
about 3,040 vehicle trips per day, including net trip decreases during the school afternoon and
commuter PM peak hours; an increase of 270 net new trips is projected during the AM peak
hour. Vehicle trip estimates were calculated based upon rates and methods presented in the
Institute of Transportation Engineers (ITE) Trip Generation Manual (10th edition, 2017) and
were corroborated with observations completed by Heffron Transportation, Inc. at the existing
school site. It is expected that truck trips would comprise less than 1% of total daily trips,
primarily consisting of garbage pick-up and occasional deliveries.
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.
No.
h. Proposed measures to reduce or control transportation impacts, if any:
The School would develop and implement a Transportation Management Plan (TMP) to
manage school-day on-site queuing and parking, to manage event parking, and to encourage
travel of faculty, staff and students by bus, walking, biking, and carpool. The project would
also pay Transportation Impact Fees in accordance with City requirements.
15. Public Services [help]
a. Would the project result in an increased need for public services (for example: fire protection,
police protection, public transit, health care, schools, other)? If so, generally describe.
No.
b. Proposed measures to reduce or control direct impacts on public services, if any.
None.
16. Utilities [help]
a. Circle utilities currently available at the site:
electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system,
other ___________
c. 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.
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Proposed measures to protect or conserve energy and natural resources are:
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.