HomeMy WebLinkAboutDNS and Environmental Checklist - SEP Determinations - 5/8/2006 Adlbk
CPWashington State Olympic Region
Department of Transportation Environmental and Hydraulic Services Office
Douglas B. MacDonald 150 Israel Road SW,FI 4,Tumwater
9 PO Box 47417
Secretary of Transportation Olympia,WA 98504-7417
360-570-6700/Fax 360-570-6697
May 8, 2006 TTY: 1-800-833-6388
www.wsdot.wa.gov
Department of Ecology R EC E IV E D
Environmental Review Section MAY 20�6
PO Box 47703
Olympia, WA 98504-7703 pAASON CO.PLANNING DEPT.
RE: SEPA Register
Dear SEPA Reviewer:
Attached is a copy of the Environmental Checklist and Determination of Non-Significance for
your information and publication in the SEPA Register, in accordance with WAC 197-11-340(2).
Project: US 101 Lilliwaup Vicinity Slide—Unstable Slope
MP 326.87 to MP 326.84
If you have any questions, please contact Tom Barton III at(360) 570-6727 or Stacie Kelsey
at(360) 570-6729.
Sincerely,
om Whitney
Acting Environmental &Hydraulic Manager
Olympic Region
TFW:tjb
Enclosures: DNS
Environmental Checklist
Vicinity Map &Plan Sheets
cc: ✓IVlason County Community Development w/enclosures
Penny Keyes,DOE w/enclosures
Delbert Miller, Skokomish Tribe w/enclosures
Jamie Valadez,Lower Elwha Klallam Tribe w/enclosures
Kathy Duncan,Jamestown S'Klallam Tribe w/enclosures
Marie Hebert, Port Gamble S'Klallam Tribe w/enclosures
Neal Uhlmeyer w/enclosures
Project File w/enclosures
SF0508006(3621)
State Environmental Policy Act
MPWashington State
Department of Transportation DETERMINATION OF NONSIGNIFICANCE
Description of proposal: This proposed project will repair an active unstable slope:
This is an unstable slope project located just north of Lilliwaup on US 101. This slope has been
active for many years. In 1995 and 1996 major slide events crossed US 101 with debris reaching
Hood Canal. There are yearly problems will the slide area creeping onto the southbound lane
requiring continuing clean up to maintain a safe driving surface.
The proposed fix for the slide area is to build a shear key buttress. Construction of the shear key
buttress involves sequential excavation of the slide debris in the toe area of the slide and
backfilling the excavated area with quarry spalls. A cross culvert will need to be installed to
drain the bottom of the shear key buttress. Once the buttress is built, a barrier will be installed
along the shoulder of the southbound lane.
Proponent: Washington State Department of Transportation
Location of proposal: The project is located on US 101 from MP 326.87 to MP 326.84.
Township 23 North, Range 3 West, W.M. Section 19, 20 and 30 in Mason County.
Lead Agency: Washington State Department of Transportation
The lead agency for this proposal has determined that it does not have a probable significant
adverse impact on the environment. An environmental impact statement (EIS) is not required
under RCW 43.21C.030(2)(c). This decision was made after review of a completed
environmental checklist and other information on file with the lead agency. This information is
available to the public on request.
X This DNS is issued under WAC 197-11-340(2); The lead
agency will not act on this proposal for 14 days
from the date of si nature below. Comments must be
submitted by: M
Ay 2 6 2006
Responsible Official: TOM WHITNEY
Position/Title: Acting Environmental & Hydraulic Manager
Olympic Region
Phone: 360-570-6702
Address: P.O. Box 47417
Olympia, WA 98504-7417
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Date: J— S -C�J Signature: �o
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Washington State
V/ Department of Transportation
State Environmental Policy Act • Environmental Checklist
The State Environmental Policy Act (SEPA), Chapter 43.21C RCW, requires all governmental agencies
to consider the environmental impacts of a proposal before making decisions. The purpose of this
checklist is to provide information about the proposal to interested parties, to help identify impacts of the
proposal (and to avoid or reduce impacts from the proposal, if possible) and to help the lead agency
decide whether an Environmental Impact Statement is required. The checklist questions apply to all parts
of the proposal, even if they are planned over a period of time. Attached is additional information that
will help describe the proposal or its environmental effects.
A. BACKGROUND
l. Name of proposed project, if applicable:
US 101 Lilliwaup Vicinity Slide—Unstable Slope
2. Name of applicant and lead agency:
Washington State Department of Transportation
Olympic Region
3. Address and phone number of applicant and contact person:
Neal Uhlmeyer Tom Whitney
Project Engineer Acting Environmental Manager
PO Box 47446 PO Box 47417
Olympia, WA. 98504-7446 Olympia,WA 98504-7417
Telephone: (360) 412-3420 Telephone: (360) 570-6702
Fax: (360) 412-3424 Fax: (360) 570-6697
4. Date checklist prepared:
May 2006
5. Proposed timing or schedule (including phasing, if applicable):
Anticipated project advertisement date is January 2007,with construction in the
summer of 2007, there are approximately 20 working days.
6. Are there any plans for future additions, expansions, or further activity related to or
connected with this proposal?.If yes, explain.
No
7. List any environmental information you know about that has been prepared, or will
be prepared, directly related to this proposal.
A Biological Assessment for U.S.Fish and Wildlife Services (USFWS)
A Biological Assessment for National Marine Fish Services (NMFS)
Cultural Resource Survey
NEPA Documented Categorical Exclusion
Geotechnical Report
8. Do you know whether applications are pending for governmental approvals of other
proposals directly affecting the property covered by the proposal? If yes, explain.
No
9. List any government approvals or permits that will be needed for the proposal, if
known.
Shoreline Substantial Development Permit
10. Give.brief, complete description of the project including (but not limited to) its size,
general design elements, and other factors that will give an accurate understanding
of its scope and nature. There are several questions in this checklist that ask you to
describe certain aspects of the proposal. You do not need to repeat those answers on
this page.
This is an unstable slope project located just north of Lilliwaup on US 101. This
slope has been active for many years. In 1995 and 1996 major slide events
crossed US 101 with debris reaching Hood Canal. There are yearly problems
with the slide area creeping onto the southbound lane requiring continuous clean
up to maintain a safe driving surface.
The proposed fix for the slide area is to build a shear key buttress. Construction
of the shear key buttress involves sequential excavation of the slide debris in the
toe area of the slide and backfilling the excavated area with quarry spalls. A
cross culvert will need to be installed to drain the bottom of the shear key
buttress. Once the buttress is built,a barrier will be installed along the shoulder
of the southbound lane.
11. Location of the proposal. Give sufficient information for a person to understand the
precise location of the 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.
This project is located on US 101 from mile post(MP) 326.87 to 326.84 in Mason
County, Township 23N, Range 3W,W.M. Sections 19, 20, and 30.
B. ENVIRONMENTAL ELEMENTS
1. EARTH
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a. General description of the site (underline one): Flat, rolling, hilly, steep slopes,
mountainous, other:
b. What is the steepest slope on the site (approximate percent slope)?
25%
c. What general types of soils are found on the site (for example, clay, sand, gravel,
peat, muck)? If you know the classification of agricultural soils, specify them and
note any prime farmland.
The general types of soils are Glacial Outwash Sands, Gravel and
Glaciolacustrine Silts.
d. Are there surface indications of history of unstable soils in the immediate
vicinity? If so, describe.
Yes, the headscarp of the slide is located approximately 300 feet left of the
centerline. The top area has sunk approximately 100 feet over the years and
a vehicle pullout was built across from the slide area with material from
various slides in the past.
e. Describe the purpose, type, and approximate quantities of any filling or grading
proposed. Indicate source of fill.
To rebuild the shoulder area approximately 12 Cubic Yards (CY)of Hot Mix
Asphalt (HMA) and 28 CY of Crush Surfacing Base Course (CSBC)will be
used. To build a shear key buttress there will be approximately 21,760 CY of
quarry spalls.
f. Could erosion occur as a result of clearing, construction, or use? If so, generally
describe.
Some erosion can be expected during construction,which will be minimized
using Best Management Practices.
g. About what percent of the site will be covered with impervious surfaces after
project construction (for example, asphalt or buildings)?
The new impervious area equals 1710 Square feet (SF), which is
approximately 5 % of total impervious surface within project limits. The
new impervious surface is for shoulder widening.
h. Proposed measures to reduce or control erosion, or other impacts to the earth, if
any:
Erosion will be controlled by preparation and implementation of a
Temporary Erosion and Sedimentation Control (TESC) Plan utilizing Best
Management Practices.
2. Air
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a. What types of emissions to the air would result from the proposal(for example:
dust, automobile, odors, industrial wood smoke)during construction and when
the project is completed? If any, generally describe and give approximate
quantities if known.
There will be a small amount of dust generated during the excavation and
embankment of the shear key buttress. There will be exhaust from
construction equipment during construction activities. Air quality is
expected to return to normal after construction activities have terminated.
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:
Water, or other fugitive dust BMP's,will be used to control dust if necessary.
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.
The whole project lies in the immediate vicinity of Hood Canal.
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. This project lies within 200 feet of Hood Canal. Construction of the
shear key buttress involves sequential excavation of the slide debris in the
toe area of the landslide and backfilling the excavation area with quarry
spalls. A cross culvert will need to be installed to drain the bottom of the
shear key. Once the buttress is built, barrier will be installed along the
shoulder.
There is also a possible staging area located within the project limits
across US 101 and within 100 feet of Hood Canal. A staging area is where
the contractor stores supplies and possible equipment.
There will be no in-water work.
3) Estimate the amount of fill and dredge material that would be placed in or
removed from surface water or wetlands and indicate the area of the site that
would be affected. Indicate the source of fill material.
Not Applicable
4) Will the proposal require surface water withdrawals or diversions? Give
general description,purpose, and approximate quantities if known.
-4-
No
5) Does the proposal lie within a 100-year f loodplain? If so, note location on
the site plan.
No
6) Does the proposal involve any discharges of waste materials to surface
waters? If so, describe the type of waste and anticipated volume of discharge.
No-
b. Ground:
1) Will ground water be withdrawn, or will water be discharged to ground
water? 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.
Not Applicable
c. Water Runoff (including storm water):
1) Describe the source of runoff(including stormwater)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.
Two new 24-inch culverts will be installed as a result of the project. One
cross culvert will be placed at the east end to capture stormwater before
it reaches the shear key buttress. The other cross culvert will be placed at
the west end to drain the bottom of the shear key buttress.
The stormwater runoff from both culverts will be captured and conveyed
to the Hood Canal,which the existing systems does at the present time.
2) Could waste materials enter ground or surface waters? If so, generally
describe.
No
d. Proposed measures to reduce or control surface, ground and runoff water
impacts, if any:
See question 3 c (1).
-5 -
4. PLANTS
a. Underline types of vegetation found on the site:
DECIDUOUS TREE: alder, maple, aspen, Vine maple, cottonwood, willow, other:
EVERGREEN TREE: fir, cedar, pine,hemlock, other:
SHRUBS: Elderberry, Serviceberry, Scotch Broom,Red Huckleberry, Mahonia,
Salal, Spirea, other: BlackBerry
Grass
Pasture
Crop or grain
WET SOIL PLANTS: cattail, buttercup, bullrush, Skunk cabbage, other: tall fescue,
soft rush
WATER PLANTS: water lily, eelgrass, milfoil, other:
Other types of vegetation:
b. What kind and amount of vegetation will be removed or altered?
Blackberry bushes, grass, very small red alders, soft rush, and tall fescue will
be removed.
c. List threatened or endangered species known to be on or near the site.
A Biological Assessment will be prepared to determine if threatened or
endangered species,exsist in the area.
d. Proposed landscaping, use of native plants, or other measures to preserve or
enhance vegetation on the site, if any:
Not Applicable
5. ANIMALS
a. Underline any birds and animals which have been observed on or near the site or
are known to be on or near the site:
BIRDS: hawk, heron,eagle, songbirds, other:
MAMMALS: deer, bear, elk, beaver, other:
FISH: bass, salmon, trout, herring,shellfish, other:
b. List any threatened or endangered species known to be on or near the site.
Hood Canal Summer-run Chum,Puget Sound Chinook
c. Is the site part of a migration route? If so, explain.
Yes, Western Washington is part of the Pacific Flyway for migratory
waterfowl.
-6-
d. Proposed measures to preserve or enhance wildlife, if any:
Section 7 Consultation with the U.S. Fish and Wildlife Service and NOAA
Fisheries will ensure that project activities do not jeopardize listed species or
destroy or adversely modify designated critical habitat. Conservation
measures outlined in the biological assessments will be included in the
construction contract.
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.
Not Applicable
b. Would the 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
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 would occur
as a result of this proposal? If so, describe:
There exists the risk of spills,fires, etc. associated with traffic accidents.
1) Describe special emergency services that might be required.
Fire,Police,Ambulance.
2) Proposed measures to reduce or control environmental health hazards, if any:
Standard construction safety practices will be in effect during
construction.
b. Noise
1) What types of noise exist in the area which may affect the project(for
example: traffic, equipment, operation, other)?
-7-
Traffic noise from US 101 exists in this area, but 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.
Noise levels may rise slightly during the daylight hours during
construction. Levels should return to normal after completion of the
project.
3) Proposed measures to reduce or control noise impacts, if any:
All work will be done during daylight hours.
8. LAND AND SHORELINE USE
a. What is the current use of the site and adjacent properties?
Rural, Recreational,United States Highway (US 101)
b. Has the site been used for agriculture? If so, describe.
No
c. Describe any structures on the site.
There is a small creosote timber pile wall buried in the excavation area that
failed during the last slide event.
d. Will any structures be demolished? If so, what?
A small creosote timber pile wall.
e. What is the current zoning classification of the site?
Rural Residential 5 (RR5)
f. What is the current comprehensive plan designation of the site?
Rural
g. If applicable, what is the current shoreline master program designation of the
site?
Hood Canal
h. Has any part of the site been classified as an "environmentally sensitive"area? If
so, specify.
Yes, geological Hazard
-8-
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:
Not Applicable
1. Proposed measures to ensure the proposal is compatible with existing and
projected land uses and plans, if any:
None
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:
Not Applicable
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 Buttress is 35 feet in height above the roadway.
b. What views in the immediate vicinity would be altered or obstructed?
None
c. Proposed measures to reduce or control aesthetic impacts, if any:
None
11. LIGHT AND GLARE
a. What type of light or glare will the proposal produce? What time of day would it
mainly occur?
-9-
None
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:
Not Applicable
12. RECREATION
a. What designated and informal recreational opportunities are in the immediate
vicinity?
There are fishing and pleasure activities along Hood Canal.
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, if any:
A traffic control plan will be implemented for the safety of the traveling
public during construction activities.
13. HISTORIC AND CULTURAL PRESERVATION
a. Are there any places or objects listed on, or ,proposed for, national, state, or local
preservation registers known to be on or next to the site? If so, generally
describe.
None Known
b. Generally describe any landmarks or evidence of historic, archaeological,
scientific, or cultural importance known to be on or next to the site.
Hood Canal is a known fishing and gathering area of Native Americans.
c. Proposed measures to reduce or control impacts, if any:
A Cultural Resource Survey will be conducted covering the project limits.
Work will be limited to the active slide area only. If any archaelogical or
historical items are encountered during construction, the contractor shall
notify the engineer and an archaelogist will be consulted.
- 10-
14. TRANSPORTATION
a. Identify public streets and highways serving the site, and describe proposed
access to the existing street system. Show on site plans, if any:
Highway US 101 runs adjacent to the toe of the slide.
b. Is site currently served by public transit? If not, what is the approximate distance
to the nearest transit stop?
Yes, Mason County Transit.
c. How many parking spaces would the completed project have? How many would
the project eliminate?
None
d. Will the proposal require any new roads or streets, or improvements to existing
roads or streets, not including driveways? If so, generally describe (indicate
whether public or private).
No
e. Will the project use (or occur in the immediate vicinity of)water, rail, or air
transportation? If so, generally describe.
No
f. How many vehicular trips per day would be generated by the completed project?
If known, indicate when peak volumes would occur.
None
g. Proposed measures to reduce or control transportation impacts, if any:
During construction activities,US 101 will be restricted down to one-way
traffic 24-hours a day 7-days a week using a portable traffic signal.
15. PUBLIC SERVICE
a. Would the project result in an increased need for public services(for example:
fire protection, police protection, health care, schools, other)? If so, generally
describe.
No
b. Proposed measures to reduce or control direct impacts on public services, if any.
None
16. UTILITIES
a. Underline the utilities currently available at the site: electricity, water, natural
gas, refuse service,,telephone, sanitary sewer, septic system, other.
- 11 -
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.
None
C. SIGNATURE
The above answers are true and complete to the best of my knowledge.
Signature:
Tom Whitney �
Acting Environmental & Hydrau is Manager
Olympic Region
Date Submitted: A9 t4 <K
- 12-
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TIME 09:58:58 AM REGION I STATE FED.AID PROJ.NO. US 101
DATE 12/12/2005
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DESIGNED BY C.LANGFORD Washington State UNSTABLE SLOPE SHEET
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FILE NAME G:\DESIGN\Sco ers\'03- '05\P3\US 101-Lilliwua Vic-Slide\IS CADD\New CAD Files 7-1-05\Drn Prod n PLOT1
TIME 09:43:23 AM TIE�BR STATE FED.AID PROJ.NO. US 101
DATE 12/13/2005
PLOTTED BY Kell T 10 WASH LILLIWAUP VIVINITY SLIDE
DESIGNED BY B.KRAMER JOB NUNKR Washington State UNSTABLE SLOPE SHEET
ENTERED BY T.KELLY
CHECKED BY J.KLOCKENTEGER CONTRACT NB. IBCAT+ON Ho. Department of Transportation OF
PROJ. ENGR. T.COWAN part— DATE DRAINAGE PLAN & PROFILE SHEETS
REGIONAL ADM. R.HAIN REVISION DATE BY