HomeMy WebLinkAboutC_ERC_Determination_Agency_Letter_MayCreekTrestle_181026.pdf
cc: King County Development and Environmental Services Jalaine Madura, Seattle Public Utilities
Wendy Weiker, Puget Sound Energy Charlene Anderson, City of Kent
Boyd Powers, Department of Natural Resources Ramin Pazooki, WSDOT, NW Region
Gretchen Kaehler, Office of Archaeology & Historic Preservation Duwamish Tribal Office
Shirley Marroquin, King County Wastewater Treatment Division US Army Corp. of Engineers
Karen Walter, Fisheries, Muckleshoot Indian Tribe (digital) Jack Pace, City of Tukwila (digital)
Laura Murphy, Muckleshoot Cultural Resources Program (digital) Misty Blair, Department of Ecology (digital)
Larry Fisher, Department of Fish and Wildlife (digital) Steve Osguthorpe, City of Newcastle (digital)
WS Department of Ecology, Environmental Review Section (digital) Gary Kriedt, Metro Transit (digital)
SEPA Center, WS Department of Natural Resources (digital) Andy Swayne, Puget Sound Energy (digital)
October 26, 2018
Washington State
Department of Ecology
Environmental Review Section
PO Box 47703
Olympia, WA 98504-7703
Subject: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION
Transmitted herewith is a copy of the Environmental Determination for the following project reviewed by the
Environmental Review Committee (ERC) on October 22, 2018:
SEPA DETERMINATION: Determination of Non-Significance - Mitigated (DNS-M)
PROJECT NAME: May Creek Trestle Project, PR18-000304
PROJECT NUMBER: LUA18-000421
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on November 9,
2018, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA
98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may
be obtained from the City Clerk’s Office, (425) 430-6510.
Please refer to the enclosed Notice of Environmental Determination for complete details. If you have questions,
please call me at (425) 430-7289.
For the Environmental Review Committee,
Clark H. Close
Senior Planner
Enclosure: ERC Determination, Mitigation Measures/Advisory Notes, Notice of Environmental Determination, and Environmental Checklist
(select recipients)
DEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
SIGNATURES:
Gregg Zimmerman, Administrator Date Rick M. Marshall, Administrator Date
Public Works Department Renton Regional Fire Authority
Kelly Beymer, Administrator Date C.E. Vincent, Administrator Date
Community Services Department Department Of Community & Economic Development
ENVIRONMENTAL (SEPA) DETERMINATION OF
NON-SIGNIFICANCE - MITIGATED (DNS-M)
PROJECT NUMBER: LUA18-000421
APPLICANT: Stephanie Modjeski, Otak, Inc. / Stephanie.Modjeski@otak.com / 2731
Westmore Ave, Ste. #300, Everett, WA 98201
PROJECT NAME: May Creek Trestle Project
PROJECT DESCRIPTION: The applicant, King County DNRP Parks and Recreation Division, is requesting
Environmental (SEPA) Review and a Shoreline Administrative Conditional Use Permit to complete an expansion of existing
over-water trails at May Creek. The May Creek Trestle Rehabilitation Project includes the repair and retrofit of the existing
May Creek trestle for use as a King County trail bridge. The May Creek trestle is located above May Creek, approximately
300 feet north of N 41st St, just west of Lake Washington Blvd N. The project is located in the Residential-10 (R-10) zone.
The bridge was historically used as a railroad bridge and currently still supports railroad tracks. The bridge is planned to
become a part of the multi-use Eastside Rail Corridor in Renton. The May Creek trestle is approximately 60 feet long and
13 feet wide and is composed of timber pilings/columns, steel pile caps, timber stringers, timber railroad ties and steel
railroad tracks. The site can be accessed by the trail connecting the trestle via N 41st St and N 43rd St.
PROJECT LOCATION: West of Lake Washington Blvd N near N 41st St (APN 3224059005)
LEAD AGENCY: City of Renton
Environmental Review Committee
Department of Community & Economic Development
The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse
impact on the environment. An Environmental Impact Statement (EIS) is not required under RCW 43.21C.030(2)(c).
Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of
Section 4-9-070D Renton Municipal Code. These conditions are necessary to mitigate environmental impacts identified
during the environmental review process. Because other agencies of jurisdiction may be involved, the lead agency will not
act on this proposal for fourteen (14) days.
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on November 9, 2018.
Appeals must be filed in writing together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady
Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and more information may be obtained
from the Renton City Clerk’s Office, (425) 430-6510.
PUBLICATION DATE: October 26, 2018
DATE OF DECISION: October 22, 2018
DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433
10/24/2018 | 10:32 AM PDT10/24/2018 | 2:10 PM PDT
10/25/2018 | 2:05 PM PDT
DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT
Planning Division
1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2
www.rentonwa.gov
DETERMINATION OF NON-SIGNIFICANCE – MITIGATED (DNS-M)
MITIGATION MEASURES AND ADVISORY NOTES
PROJECT NUMBER: LUA18-000421
APPLICANT: Stephanie Modjeski, Otak, Inc. / Stephanie.Modjeski@otak.com / 2731
Westmore Ave, Ste. #300, Everett, WA 98201
PROJECT NAME: May Creek Trestle Project
PROJECT DESCRIPTION: The applicant, King County DNRP Parks and Recreation Division, is
requesting Environmental (SEPA) Review and a Shoreline Administrative Conditional Use Permit to complete an
expansion of existing over-water trails at May Creek. The May Creek Trestle Rehabilitation Project includes the
repair and retrofit of the existing May Creek trestle for use as a King County trail bridge. The May Creek trestle is
located above May Creek, approximately 300 feet north of N 41st St, just west of Lake Washington Blvd N. The
project is located in the Residential-10 (R-10) zone. The bridge was historically used as a railroad bridge and
currently still supports railroad tracks. The bridge is planned to become a part of the multi-use Eastside Rail
Corridor in Renton. The May Creek trestle is approximately 60 feet long and 13 feet wide and is composed of
timber pilings/columns, steel pile caps, timber stringers, timber railroad ties and steel railroad tracks. The site can
be accessed by the trail connecting the trestle via N 41st St and N 43rd St.
PROJECT LOCATION: West of Lake Washington Blvd N near N 41st St (APN 3224059005)
LEAD AGENCY: The City of Renton
Department of Community & Economic Development
Planning Division
MITIGATION MEASURES:
1. The applicant shall provide the City of Renton with a temporary alternate/detour route and a traffic
control plan for users of the multi-use Eastside Rail Corridor during construction of the May Creek
Trestle Project. The temporary alternate/detour route and traffic control plan would be reviewed and
approved by the Plan Review Project Manager and shall include public notice and onsite signage for a
minimum of two (2) weeks prior to construction permit issuance.
ADIVISORY NOTES:
The following notes are supplemental information provided in conjunction with the administrative land use
action. Because these notes are provided as information only, they are not subject to the appeal process for the
land use actions.
This project does not have any advisory notes.
DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT
Planning Division
1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2
www.rentonwa.gov
OF ENVIRONMENTAL DETERMINATION
ISSUANCE OF A DETERMINATION OF
NON-SIGNIFICANCE - MITIGATED (DNS-M)
POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION
DNS-M: The City Of Renton Environmental Review Committee (ERC) has determined that the proposed action has
probable significant impacts that can be mitigated through mitigation measures.
DATE OF NOTICE OF ENVIRONMENTAL
DETERMINATION:
October 26, 2018
PROJECT NAME/NUMBER: May Creek Trestle Project / LUA18-000421
PROJECT LOCATION: West of Lake Washington Blvd N near N 41st St
(APN 3224059005)
LOCATION WHERE APPLICATION MAY
BE REVIEWED:
Applicant documents are available online through the City of Renton
Document Center website. See also https://bit.ly/2Kao6qW
PROJECT DESCRIPTION: The applicant, King County DNRP Parks and Recreation Division, is requesting
Environmental (SEPA) Review and a Shoreline Administrative Conditional Use Permit to complete an expansion of
existing over-water trails at May Creek. The May Creek Trestle Rehabilitation Project includes the repair and retrofit of
the existing May Creek trestle for use as a King County trail bridge. The May Creek trestle is located above May Creek,
approximately 300 feet north of N 41st St, just west of Lake Washington Blvd N. The project is located in the Residential-
10 (R-10) zone. The bridge was historically used as a railroad bridge and currently still supports railroad tracks. The bridge
is planned to become a part of the multi-use Eastside Rail Corridor in Renton. The May Creek trestle is approximately 60
feet long and 13 feet wide and is composed of timber pilings/columns, steel pile caps, timber stringers, timber railroad
ties and steel railroad tracks. The site can be accessed by the trail connecting the trestle via N 41st St and N 43rd St.
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on November 9, 2018,
together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057.
Appeals to the Examiner are governed by City of RMC 4-8-110 and information regarding the appeal process may be
obtained from the Renton City Clerk’s Office, (425) 430-6510.
PUBLIC HEARING: If the Environmental Determination is appealed, a public hearing will be set
and all parties notified.
NOTICE
DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT
Planning Division
1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2
www.rentonwa.gov
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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
1. Name of proposed project, if applicable:
May Creek Trestle Project
2. Name of applicant:
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King County Parks and Recreation Division
3. Address and phone number of applicant and contact person:
Chris Erickson- King County DPNRP Parks Division
201 South Jackson Street, Suite 700
Seattle, WA 98104-3855
4. Date checklist prepared:
6/5/18
5. Agency requesting checklist:
City of Renton
6. Proposed timing or schedule (including phasing, if applicable):
This SEPA checklist covers the May Creek Trestles repair project in King County. Project
construction is anticipated to begin in July 2018 and to be completed in October 2018. This
project may be subject to timing constraints associated with land use permit approvals and
an HPA by WDFW for work near regulated waters of the state. No construction phasing is
proposed.
7. Do you have any plans for future additions, expansion, or further activity related to or
connected with this proposal? If yes, explain.
There are no future planned activities related this proposal.
8. List any environmental information you know about that has been prepared, or will be
prepared, directly related to this proposal.
Baseline inventory of environmental resources such as wetlands, streams, and ESA-listed
species has been collected as part of the Ecosystem Resources Inventory- Eastside Rail
Corridor (ERC) Regional Trail Master Plan Project dated May 12, 2015 by Parametrix,
prepared for King County Department of Natural Resources and Parks. The report describes
existing conditions along the ERC in King County from Renton to Snohomish and includes a
portion of Kirkland and Woodinville. The report May Creek within the project area.
Biologists from Otak, Inc. (Otak) conducted a site inspection on November 13, 2017 to
identify existing wetland and stream conditions and to document critical habitats within the
project area. May Creek was observed on site. No other wetlands or streams were observed
on site or in the immediate vicinity of the project site.
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.
There are no known pending approvals of other proposals that will directly affect this project.
10. List any government approvals or permits that will be needed for your proposal, if known.
A Land Use Permit and Right of Way Permit from the City of Renton will be needed for this
proposal. An HPA from WDFW may be needed for work within 200 feet of regulated waters of
the state.
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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 May Creek Trestle Project includes the repair and retrofit of the existing May Creek
trestles for use as County trail bridges. The bridge is currently for pedestrian use and is
planned to become a part of the multi-use Eastside Rail Corridor (ERC) in Renton. The
bridge was historically used as a railroad bridge and currently still supports railroad tracks.
A narrow pedestrian lane is separated from the railroad tracks by a chain-link fence. The
trestle is composed of timber piles/columns, steel pile caps, timber stringers, timber railroad
ties and steel railroad tracks.
The bridge has defects and is deteriorated and requires repairs and retrofits to provide an
extended lifespan and continued use. Timber stringers, piles and cap beams are in poor
condition with internal decay. Steel cap beams have rusted. The project consists of
repairing and rehabilitating the defective and deteriorated components of the bridge, and
removing existing railroad ties, tracks, and the walkway. New decking and railing will be
installed and back wall and wing walls will be replaced. Trail approaches will be re-graded
with existing material.
Repair work for the May Creek trestle includes repairing four piles with steel banding using
hand tools and ladders. No motorized equipment will be used for these repairs. Existing
timber wing walls will be removed and replaced with new gravity block walls. The existing
timber back wall will be replaced in-kind. Railroad ties, tracks, timber walkway planks, and
the chain-link fence will be removed. A small crane/excavator will be positioned in the ERC
right of way to allow for materials to be transported to and from the bridge deck.
Construction of the new decking will be completed with the same equipment as the removal
work.
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 site is located in the City of Renton, King County. The May Creek trestle is
located approximately 300 feet north of Wells Ave N/ N 41st St, west of Lake Washington
Blvd. N. The project site is located in Township 24N, Range 05E, Section 32 and Section 29
of the Public Land Survey System and in Water Resource Inventory Area (WRIA) 8 – Cedar-
Sammamish.
B. ENVIRONMENTAL ELEMENTS
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1. Earth
a. General description of the site:
(circle one): Flat, rolling, hilly, steep slopes, mountainous, other _____________
The trail and bridge approaches are flat. The May Creek bridge deck spans 60 feet across the
stream and is approximately 15 feet above the water surface elevation of the stream. There
is a moderate slope from the bridge approaches to the stream banks below on the north and
south side of the trestle.
b. What is the steepest slope on the site (approximate percent slope)?
The steepest slope at the project site occurs at the north end of the May Creek trestle. The
slope is approximately 15% from the slope adjacent to the bridge deck surface to the stream
bank below. The majority of the project area is flat.
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.
May Creek trestle project area: Norma sandy loam.
d. Are there surface indications or history of unstable soils in the immediate vicinity? If so,
describe.
No evidence of unstable soils was found at the project site. Stream banks of May Creek are
generally stable. Rock armoring is present at the downstream end of May Creek, outside of
the project area.
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 fill or excavation will take place below the OHWM of May Creek. Pilings are to remain in place. The
project will involve approximately 21 cubic yards (CY) of excavation for removal of the timber back
walls and wing walls. There will be approximately 21 CY of replacement fill, consisting of new timber
back walls and gravity block walls. There will be approximately 20 CY of temporary fill for the
construction entrance.
f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe.
Soil disturbing activities are not anticipated to occur as a result of repairs. The majority of
repairs will be conducted with hand tools; a generator will be required for welding. Disturbed
vegetation may be limited to areas within the ERC right of way for a small crane to allow for
movement of materials to/from the bridge deck. Minor erosion could potentially occur as a
result of disturbed vegetation, resulting in exposed soils. Temporary erosion and sediment
control (TESC) measures and appropriate construction best management practices (BMPs),
such as working during the dry season, and installing silt fencing along the stream banks, will
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be used during construction to minimize erosion. The completed project is not anticipated to
cause erosion from use.
g. About what percent of the site will be covered with impervious surfaces after project
construction (for example, asphalt or buildings)?
The May Creek trestle new bridge decking will be constructed of precast concrete panels and
will create approximately 840 square feet of new, non- pollution generating impervious
surface. The bridge deck will span approximately 60 feet, at approximately 15 feet above the
May Creek channel.
h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any:
Appropriate temporary erosion and sediment control measures and Best Management Practices
designed to avoid and limit erosion will be deployed during construction. Exposed soils are not
anticipated as a result of repairs.
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.
During construction there will be emissions from motorized equipment, such as a generator
for a welder and a small crane and/or excavator for lifting materials to the top of the bridge
deck. There will be no new emissions from the bridge after the project is complete.
b. Are there any off-site sources of emissions or odor that may affect your proposal? If so,
generally describe.
Emissions from traffic from the adjacent roadways currently exist under normal
circumstances and will not affect this proposal.
c. Proposed measures to reduce or control emissions or other impacts to air, if any:
All onsite equipment will be maintained to properly function and meet applicable emission
standards.
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 and provide names. If appropriate, state what stream or river it flows into.
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Yes. The May Creek trestle crosses over May Creek. May Creek is a perennial, type S
(Shoreline of the State) watercourse per Washington Department of Natural Resources
(DNR) and the City of Renton (City). May Creek is a tributary to Lake Washington.
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.
Yes. Repairs to the May Creek trestle will occur over May Creek. Repairs over May Creek
include retrofitting four pilings with steel banding, removing the existing walkway, tracks,
ties, and fencing, and replacing the existing walkway with new timber decking and
railings. Construction equipment will be located above the stream channel.
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 fill material will be placed in any surface water or wetland areas. No dredge material
will be removed from any surface water or wetland.
4) Will the proposal require surface water withdrawals or diversions? Give general
description, purpose, and approximate quantities if known.
No surface water will be withdrawn or diverted as a component of the project.
5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan.
The proposed project will occur above the 100-year floodplain of May Creek. No work will
take place within the 100-year floodplain of any water body that results in any changes to
the floodplain. Work proposed is associated with installing steel banding on existing
bridge piles using hand tools, in order to improve structural integrity.
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. There will be no discharge of waste materials into surface waters. All TESC and
construction BMPs will be in place prior to construction.
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.
Groundwater will not be withdrawn, and no water will be discharged to groundwater as a
result of the project.
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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.
No waste material will be discharged as a result of the 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.
Any stormwater runoff from the repair activities will be intercepted by installed erosion control
methods such as silt fencing or other flow barriers. Under existing conditions, stormwater runoff
from the bridge deck of the trestle flows to the stream and uplands below. There will be no change
in stormwater runoff as a result of this project.
2) Could waste materials enter ground or surface waters? If so, generally describe.
No waste material will enter ground or surface waters as a result of the project. Netting
may be installed below both trestles to ensure debris from repairs does not enter any
waterbody.
3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If
so, describe.
The project will not alter or affect drainage patterns in the vicinity of the site. Repairs are
to be made in-kind and no change in drainage patterns will occur as a result of this
project.
d. Proposed measures to reduce or control surface, ground, and runoff water, and drainage
pattern impacts, if any:
Potential stormwater runoff from the construction activity will be intercepted by installed erosion control
methods such as silt fencing. Existing stormwater runoff drains through the bridge decking or flows
over to the stream and uplands below. The new bridge decking for the trestle will not alter existing
drainage patterns.
4. Plants
a. Check the types of vegetation found on the site:
__X __deciduous tree: alder, maple, cottonwood
__X__evergreen tree: fir, cedar, pine, other
__X __shrubs
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__X __grass
____pasture
____crop or grain
____ Orchards, vineyards or other permanent crops.
__X__ 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 shrubs and grasses within the ERC right of way may be impacted by the small crane
and/or excavator. No vegetation is planned for removal.
c. List threatened and endangered species known to be on or near the site.
None known. The DNR Natural Heritage Program indicates no known rare, threatened, or
endangered plant species in the Township, Range, and Sections where the project site is
located. The project area in the immediate vicinity of the bridge does not appear to provide
known or suitable habitat for any state listed threatened or endangered plant species.
d. Proposed landscaping, use of native plants, or other measures to preserve or enhance
vegetation on the site, if any:
Any disturbed vegetation will be replanted with native vegetation.
e. List all noxious weeds and invasive species known to be on or near the site.
Invasive plants on site include reed canarygrass (Phalaris arundinacea), and creeping
nightshade (Solanum dulcamara). No other invasive species were observed during the field
survey.
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:
mammals: deer, bear, elk, beaver, other: coyote, opossum, raccoon, rabbit,
small rodents, other:
fish: bass, salmon, trout, herring, shellfish, other ________
b. List any threatened and endangered species known to be on or near the site.
WDFW’s Priority Habitat and Species (PHS) on the Web maps Fall Chinook (Oncorhynchus
tshawytscha) (federally-listed threatened), Coho (Oncorhynchus kitsutch), and winter
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steelhead (Oncorhynchus mykiss) (federally-listed threatened) within May Creek. The project
is expected to have no effect to instream habitat because no in-water work is proposed. The
project intends to retrofit existing pilings of the trestle and replace the decking above May
Creek.
c. Is the site part of a migration route? If so, explain.
Yes. The site is within the broad boundaries of the Pacific Flyway, the major migrating corridor for
birds in North America west of the continental divide. However, the project site itself is not a known
congregation point for migrating birds. May Creek may be a migration route for Chinook salmon and
steelhead.
d. Proposed measures to preserve or enhance wildlife, if any:
None. The proposed project intends to retrofit existing structures of the May Creek trestle as
well as to replace the upper decking within the same footprint. No impact to wildlife is
anticipated as a result of this project.
e. List any invasive animal species known to be on or near the site.
Invasive animal species known to be on or near the site include house sparrows, European starlings,
eastern gray squirrels, eastern cottontail rabbits, Virginia opossums, and red swamp crayfish.
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.
None needed for the completed project.
b. Would your project affect the potential use of solar energy by adjacent properties?
If so, generally describe.
No.
c. What kinds of energy conservation features are included in the plans of this proposal?
List other proposed measures to reduce or control energy impacts, if any:
None. The project consists of the repair of trestle pilings and replacement of bridge decking,
and will not consume additional energy once completed.
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.
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Environmental health hazards associated with the project are limited to those produced by
standard trestle repair projects. Construction equipment will be limited; however
environmental hazards from these may include the emission of gases or minor spilling of
fluids associated with construction equipment. Risks associated with these potential spills
will be minimized or avoided by implementing appropriate BMPs and a Stormwater Pollution
Protection Plan (SWPPP). All treated wood material will be removed from site. A spill
prevention kit will be on site in case of an unintended spill, and equipment refueling will
occur at the staging areas or similar location away from the streambanks.
1) Describe any known or possible contamination at the site from present or past uses.
None.
2) Describe existing hazardous chemicals/conditions that might affect project
development and design. This includes underground hazardous liquid and gas
transmission pipelines located within the project area and in the vicinity.
None. There are no existing hazardous chemicals or conditions that may affect the
project.
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.
Heavy construction equipment will be limited to a small crane or excavator. Spilling of
fluids associated with construction equipment may occur. Potential spills will be
minimized or avoided by implementing appropriate BMPs and a Stormwater Pollution
Protection Plan (SWPPP). Fluids such as gasoline and oil will be stored away from the
streams and in spill preventative containers. There will be no other storage, use or
production of hazardous chemicals during project development and construction.
4) Describe special emergency services that might be required.
First aid kit and emergency 911 response if there is a worker injury. No other emergency
services relating to the trestle repairs are anticipated following completion of the project.
5) Proposed measures to reduce or control environmental health hazards, if any:
As noted above, appropriate BMPs will minimize risk of environmental health hazard exposure, and
reduce/control environmental health hazards should exposure occur.
b. Noise 1) What types of noise exist in the area which may affect your project (for example:
traffic, equipment, operation, other)?
Existing noise in the area includes typical noises from motor vehicles along arterial roadways and
highways.
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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.
For the short term during removal and replacement of the bridge deck, there will be muffled
motorized equipment from the small crane or excavator and the sounds of carpentry. Handheld
equipment will be used for piling repair. Temporary noise will occur from a generator being used for
welding. The hours of operation during construction would be from approximately 8 AM to 5 PM.
3) Proposed measures to reduce or control noise impacts, if any:
None, other than maintaining working mufflers on motorized equipment during construction and
limiting work to daylight hours.
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 project site is located along the Eastside Rail Corridor and is used as a pedestrian trail.
Adjacent land use includes single-family residences, and a major highway I-405. The project
is not anticipated to affect current land uses 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?
The project site has not been used for farmlands or forestlands. No resource lands will be
affected by the project proposal.
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:
There are no surrounding working farms or forest land business.
c. Describe any structures on the site.
The site currently has a timber trestle bridge that spans approximately 60 feet across May
Creek and a 406-foot long timber trestle that parallels Ripley Lane. Upstream of May Creek is
a 3-foot corrugated metal pipe culvert that transports runoff from the roadway above to the
stream, a large concrete weir and an above-ground gravity main.
d. Will any structures be demolished? If so, what?
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No structures are planned to be removed or demolished.
e. What is the current zoning classification of the site?
The May Creek trestle site is zoned R10- Residential 10 dwelling units per acre.
f. What is the current comprehensive plan designation of the site?
The May Creek trestle site is currently designated RHD- Residential High Density
g. If applicable, what is the current shoreline master program designation of the site?
The May Creek trestle site is designated Urban Conservancy.
h. Has any part of the site been classified as a critical area by the city or county? If so,
specify.
King County (County) critical areas include wetlands, wildlife habitat conservation areas, and
shorelines (King County Code 21A.24). Critical areas in the City of Renton include habitat conservation
areas, streams and lakes, and wetlands (Renton Municipal Code 4-3-050). May Creek meets criteria for
classification as critical areas by the City and County. Project biologists investigated the site on
November 13, 2017 and found no other critical areas within the immediate vicinity of the project site.
i. Approximately how many people would reside or work in the completed project?
None.
j. Approximately how many people would the completed project displace?
None.
k. Proposed measures to avoid or reduce displacement impacts, if any:
None. Does not apply.
L. Proposed measures to ensure the proposal is compatible with existing and projected land
uses and plans, if any:
None. The use of this area for a pedestrian trail is consistent with current land uses. Proposed projects
will not have an effect on existing land uses.
m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-
term commercial significance, if any:
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None. There will be no impacts to agriculture or forest lands.
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 antennas; what is
the principal exterior building material(s) proposed?
The existing timber trestle is approximately 15 feet tall from ground surface elevation. The
bridge and trail grades will be maintained. New railings will be installed on the bridge decking
and will be 4.5 feet tall.
b. What views in the immediate vicinity would be altered or obstructed?
None. There will be no change in view once the trestles have been repaired.
b. 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. The project will be constructed within daylight hours, and no additional trail
illumination is proposed.
b. Could light or glare from the finished project be a safety hazard or interfere with views?
No.
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c. What existing off-site sources of light or glare may affect your proposal?
None. There are no existing off-site sources of light or glare that would affect the project.
d. Proposed measures to reduce or control light and glare impacts, if any:
None. There will be no light or glare impacts associated with the proposed project.
12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity?
The site is located along the Eastside Rail Corridor and is used as a recreational pedestrian
trail. May Creek Trail intersects with the Eastside Rail Corridor. There are no other
recreational opportunities in the immediate vicinity.
b. Would the proposed project displace any existing recreational uses? If so, describe.
No. The project will continue to provide use and access to the ERC trail.
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 continue to provide use of and access to existing recreation trails.
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, the Washington State Department of Archaeology and Historic Preservation’s (DAHP) website
database does not indicate the presence of any culturally significant places or objects
(http://www.dahp.wa.gov/learn-and-research/find-a-historic-place) in or near the project site. This
project is exempt from Executive Order 05-05 as it is considered maintenance and any proposed
ground disturbance is associated with existing bridge piers and will occur within the existing trail
approach alignments.
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. A desktop review of the project area that included search of the WISAAARD statewide
database of historic and archaeological resources indicated no resources in the immediate
vicinity.
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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.
A desktop review of the project area that included search of the WISAAARD statewide database
of historic and archaeological resources.
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.
There is very low potential to affect cultural resources with this project. The project intends to retrofit
existing structures of the trestle and ground disturbance will be limited to regrading existing trail
approaches. Work will be suspended and a DNR archaeologist will be notified in case of any
inadvertent discovery.
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.
This proposal is located west of highway I-405. Access to the trestles is via highway I-405, exit 7
towards Lake Washington Blvd (May Creek trestle site).
b. Is the site or affected geographic area currently served by public transit? If so, generally
describe. If not, what is the approximate distance to the nearest transit stop?
No. The nearest public transit is located approximately 1.2 miles south at N 30th St and I-405
(King County Metro buses 167, 342, 560, 566, 952)
c. How many additional parking spaces would the completed project or non-project proposal
have? How many would the project or proposal eliminate?
None.
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.
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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?
None above existing.
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:
None. Not applicable.
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.
No.
b. Proposed measures to reduce or control direct impacts on public services, if any.
Not applicable. There will be no direct impacts to any public services.
16. Utilities a. Circle utilities currently available at the site:
electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system,
other ___________
An underground water main runs parallel to the west side of the May Creek trestle,
approximately 35 feet away and a King County gravity main runs parallel to the east side of
the trestle, approximately 31 feet away.
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.
There are no utilities needed for this proposal.
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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Signature: ___________________________________________________
Name of signee ___________________________________________________
Position and Agency/Organization _____________________________________
Date Submitted: _________________