HomeMy WebLinkAboutSEP96-0090 - SEP Determinations - 4/18/1996 0090 H R,F
MASON COUNTY
DEPARTMENT OF COMMUNITY DEVELOPMENT
Planning-Landfill-Utilities
DETERMINATION OF NONSIGNIFICANCE
(WAC 197 -11-340)
Description of Proposal :
Remove two ecology block gravel traps and replace them with an 8 ft by 8
ft cable block splash pad supplemented with three large boulders to
dissipate water velocities.
Proponent : MASON PUBLIC WORKS TO gE KEPT IN THE
Location of Proposal : . . . . . . . . . . . . . . . PARCEL FILE
PARCEL#:322330060000
STATE R/W
Aproximate street addresses are E. 7292 and E. 8040 Highway 106, Union.
Lead Agency: MASON COUNTY
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 upon request .
This DNS is issued under 197-11-340 (2) , the Lead Agency will not act on
this proposal for 15 days from the date below. Comments must be
submitted by 05/03/96 .
DATE: 04/18/96
Signature f r s onsible official Date
Responsible Official : Gary Yando
Director of Community Development
426 W. Cedar,
PO BOX 578
Shelton, WA 98584
(360) 427 -9670
NON_SIG, rev: 10/30/92
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APPLi CANT
TO BE COMPLETED BY APPLICANT: EVALUATION FOR
AGENCY USE ONLY
A. BACKGROUND
1. Name of proposed project, if applicable:
Ecology Block Sediment Basin Removal
2 . Name of applicant:
Mason County Department of Public Works
3 . Address and phone number of applicant and contact
person:
PO Box 1850 Alan A. Tahja, P.E.
Shelton, WA 98584 County Hydraulic Engineer
(360) 427-9670 ext.461
4 . Date checklist prepared:
March 11, 1996
5. Agency requesting checklist:
Mason County Department of Community
Development (DCD)
6. Proposed timing or schedule (including
phasing, if applicable) :
After June 15, 1996 thru September 1, 1996.
7 . Do you have any plans for future 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.
May 1991, Skillings & Chamberlain, Inc.
prepared construction drawings for
construction of the ecology block basins. Ken
Martig, P.E. has been contacted and reported
that the 3611 diameter culverts install
beneath Highway 106 were intentionally
oversized to accommodate potential mud and
debris flows.
HPA issued Feb. 4, 1991 (Control No. 00-
47990-02) Current project addresses item #4
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of that HPA here stated; 4 . When
sedimentation to the beaches, caused by run-
off of uplands, is no longer a threat, then
more conventional beach erosion measures will
be taken by Mason County (elimination of the
stilling basin and complete restoration of
the surf smelt beach) .
Mr. Niel Rickard of WDFW has visited site and
feels removal of the basin would be adequate
restoration of the surf smelt beach.
9. Do you know whether applications are pending
for governmental approvals of other proposals
directly affecting the property covered by your
proposal? If yes, explain.
None Known.
10. List any government approvals or permits that
will be needed for your proposal, if known.
Shoreline Substantial Development Permit
Hydraulic Project Approval (WDFW)
U.S. Army Corp of Engineer 404 Permit
11. Give a 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. )
Proposal is to remove ecology block stilling
basins from two locations installed in 1991.
Monitoring/inspection of the features over
the past 5 years indicates that the upper
reaches of the basins delivering water to the
cross culverts beneath Highway 106, have
healed sufficiently to eliminate the need for
the stilling basins. WDFW has requested the
removal of the ecology block sediment
traps/stilling basins. The rows of ecology
blocks protecting the road fill embankments
are to be left as indicated on the attached
plans. Phased construction is proposed with
the waterward ecology blocks being removed as
the first step. Gravels trapped in the
stilling basins will be allowed to distribute
themselves over the neighboring beaches.
After the beaches have returned to a natural
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condition, a cable-concrete pad is to be
installed at each location to provide erosion
protection at the pipes' outfalls. At the
time of the pad installation, additional rock
work is proposed to "dress up" the upper
beach/road embankment areas. Also, riprap
that has migrated onto the beach will be
restored to a high elevation, and three large
boulders are proposed to be positioned to
provide additional energy dissipation. It is
expected that the project can be performed
from the road shoulder requiring no equipment
operation on the beach. The ecology blocks
salvaged from the basin demolition will be
disposed of at an upland location.
12 . What is the 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 location lies in the Southeast
Quarter of Section 33, and the Southeast
Quarter of Section 34, both in Township 22
North, Range 3 W.W.M. , Mason County,
Washington on State Highway 106 on the south
shore of Hood Canal. The Smith/Nordstrom Site
is at approximate street address E 7292 Hwy
106. The Gabrielson site is at approximate
street address E 8040 Hwy 106, Union
Washington. vicinity map attached.
B. ENVIRONMENTAL ELEMENTS :
1. EARTH:
a. General description t e site (circle
one) : Flat, rolling,/1hilly, steep slopes,
mountainous, other
b. What is the steepest slope on the site
(approximate percent slope) ?
The highway fill embankment is at an
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approximate slope of 1: 1. The beach
slopes away from the highway fill
embankments at an approximate slope of
10%.
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 beach at the Smith/Nordstrom site
appears to be underlain by a
consolidated clay, with a sandy gravel
residing on the surface of the beach.
The beach at the Gabrielson site appears
to be a sandy gravel, composed of soils
washed down from the surrounding
uplands. The road embankments are a
gravelly sand and has the character of
reconsolidated glacial till material.
d. Are there surface indications or history
of unstable soils in the immediate vicinity?
If so, describe.
Natural beach erosion processes appear
to be slowly eroding away the toe of the
road embankments.
e. Describe the purpose, type, and
approximate quantities of any filling or
grading proposed. Indicate source of fill.
Approximately 30 cubic yards of material
is present in each of the two ecology
block stilling basins. WDFW is
requesting that the material present in
the basins not be removed from the beach
environment, but be allowed to dissipate
naturally. To accomplish this, the
basins will be disassembled, and the
material allowed to dissipate naturally
through tidal action. Once the beaches
have established their equilibriums, the
cable concrete mats will be buried
approximately 0 .51 below the anticipated
beach level (s) . Project completion will
include the placement of three large
boulder at the pipes, outfalls to
provide energy dissipation during high
flow periods.
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f. Could erosion occur as a result of
clearing, construction, or use? If so,
generally describe.
Yes. Unbridled discharges from the
outfall pipes represent potential for
erosion, and a scour hole to develop.
The placement of the cable concrete mats
and riprap boulders is expected to
minimize erosion at the culverts'
outfalls and provide a natural
dispersion and velocity reduction
device.
g. About what percent of the site will be
covered with impervious surfaces after
project constructions (for example, asphalt
or buildings) ?
None.
h. Proposed measures to reduce or control
erosion, or other impacts to the earth, if
any:
Construction will be done during the dry
season of the year to alleviate
environmental impacts. Pipe outfall
inverts will be fitted with erosion
control-cable concrete mats and riprap
boulders to provide permanent
erosion/scour protection.
2 . AIR:
a. What types of emissions to the air would
result from the proposal (i.e. dust,
automobile, odors, industrial wood smoke)
during construction and when the project is
completed? If any, generally describe and
give approximate quantities, if known.
Dust from the construction and fumes
from the equipment.
b. Are there any off-site sources of
emissions or odor that may affect your
proposal? If so, generally describe.
None known.
c. Proposed measures to reduce or control
emissions or other impacts to air, if any:
None proposed.
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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.
Yes. The ecology block stilling basins
are sited almost entirely on the upper
beach of Hood Canal. The bottom rows of
ecology blocks are sited below the
ordinary high water elevation of Hood
Canal. Only a small portion of the
proposal involves work above tidal areas
of Hood Canal. Work will be coordinated
to avoid tidal conflicts.
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. Plans attached.
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 .
Approximately 30 ecology blocks
(21x2lx4l ) will be removed from each of
the two sites. Removal of the ecology
blocks is expected to release
approximately 30 cubic yards of
accumulated sands and gravels.
4) Will the proposal require surface
water withdrawals or diversions? Give
general description, purpose, and
approximate quantities if known.
None anticipated.
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:
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.
None.
C. Water Runoff (including storm water) :
1) Describe the source of runoff (including
storm water) and method of collection and
disposal, if any (include quantities, if
known) . Where will this water flow? Will
this water flow into other waters? If so,
describe.
The proposed project is the delivery
point for runoff generated on upland
properties in sections 3 & 4 of Township
21 North, Range 3 WWM.
2) Could waste materials enter ground or
surface waters? If so, generally describe.
Unlikely. Possible gas, oil or diesel
spillage during equipment maintenance
operations.
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d. Proposed measures to reduce or control
surface, ground, and runoff water impacts, if
any:
Construction will be during the summer
or dry season. Equipment maintenance
operations will be restricted from
within 200 feet of the Hood Canal
shoreline.
4 . PLANTS:
a. Check or circle types of vegetation
found on the site:
X deciduous tree: alder, maple,
aspen, other
X evergreen tree: fir, cedar, pine,
other
X shrubs
X grass
pasture
crop or grain
wet soil plants: cattail,
buttercup, bulrush, skunk cabbage,
others
water plants: water lily,
eelgrass, milfoil, other
other types of vegetation
b. What kind and amount of vegetation will be
removed or altered?
None intentionally.
c. List threatened or endangered species
known to be on or near the site.
None known.
d. Proposed landscaping, use of native
plants, or other measures to preserve or
enhance vegetation on the site, if any:
Existing vegetation will be preserved as
much as possible. After riprap armoring
of the upper road shoulder embankments,
natural vegetation is expected to return
to the site. Hand broadcast grass seed
will be applied to exposed soils.
5. ANIMALS
a. Circle any birds and animals which have
been observed on or near the site or are
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known to be on or near the site:
birds: hawk h , e svongbljd
oth Pa rrQ-w
mammals: deer, bear, eaver, _
ot
bask a mo trout, herring,
shellfis er - smelt roc cra eels
u lheads. . .
b. List any threatened or endangered species
known to be on or near the site.
None known.
c. Is the site part of a migration route?
If so, explain.
Unknown. May be in the path of Canadian
Geese Migratory Route. None seen.
d. Proposed measures to preserved or enhance
wildlife, if any:
Placement of the cable concrete mats and
riprap armoring are expected to minimize
damage to beach environment by water
delivered through an approximate 3 foot drop.
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.
N/A.
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.
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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.
Only those associated with refueling and
servicing the construction equipment.
1) Describe special emergency services that
might be required.
Emergency medical or traffic control in
case of an accident.
2) Proposed measures to reduce or
control environmental health hazards, if
any:
Equipment maintenance activities will be
restricted from within 200 feet of any
open waters.
b. Noise.
1) What types of noise exist in the area
which may affect your project (for
example: traffic, equipment operation,
other) ?
None.
2) What types and levels of noise would
be created by or associated with the
project on a short-term or a long-term
basis (for example: traffic,
construction, operation, other) ?
Indicate what hours noise would come
from the site
Normal noise from road construction
equipment. Construction activity will be
restricted to daylight hours (7 am to 7
Pm)
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3) Proposed measures to reduce or
control noise impacts, if any:
Mufflers on equipment. Restrict work
hours to daylight hours.
8 . LAND AND SHORELINE USE:
a. What is the current use of the site and
adjacent properties?
Current site is a state Highway.
Adjacent areas are predominantly forest
lands, or residential/recreational
properties.
b. Has the site been used for agriculture?
If so, describe.
Unknown. Possible shellfish harvesting.
c. Describe any structures on the site.
Ecology block stilling/settling basins
sited on a relatively native beach.
d. Will any structures be demolished? If so,
what?
Yes. The ecology block stilling basins
will be eliminated. Some portions are to
remain to provide the highway fill
embankment with wave/erosion protection.
e. What is the current zoning classification
of the site?
N/A
f. What is the current comprehensive plan
designation of the site?
The 1968 Mason County Land Use Plan
(Fig.9) shows the proposed activities
lie in a Suburban designated area.
g. If applicable, what is the current
shoreline master program designation of the
site?
Urban
h. Has any part of the site been classified
as an "environmentally sensitive" area? If
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so, specify.
Unknown.
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.
1 . Proposed measures to ensure the proposal
is compatible with existing and projected
land uses and plans, if any:
Project will not change any of the existing
uses of the surrounding properties. Project
is expected to help restore the natural
environment in the areas of the culvert
outfalls.
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.
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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?
Not Applicable.
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 Proposed.
11. LIGHT AND GLARE
a. What type of light or glare will the
proposal produce? What time of day would it
mainly occur?
None.
b. Could light 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:
None.
a. What designated and informal recreational
opportunities are in the immediate vicinity?
Golfing, hunting, hiking, fishing,
boating, logging, mushroom picking,
clamming, oyster picking, beachcombing,
etc.
J
ro b. Would the proposed P ro osed project displace any
existing recreational uses? If so, describe.
No.
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c. Proposed measures to reduce or control
impacts on recreation, including recreation
opportunities to be provided by the project
or applicant, if any:
Removal of the ecology block basins will
restore the beach to a more natural
condition, and hopefully make the beach
more suitable for recreational purposes.
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.
None known.
c. Proposed measures to reduce or control
impacts, if any:
None.
14 . TRANSPORTATION:
a. Identify public streets and highways
serving the site and describe proposed access
to the existing street system. Show on site
plans, if any.
Site is part of the State Highway system.
b. Is site currently served by public
transit? If not, what is the approximate
distance to the existing street system. Show
on site plans, if any.
Possibly. 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
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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:
Project may require the use of signing
and flagging personnel to assist the
motoring public to negotiate the
construction zones during construction.
15. PUBLIC SERVICES:
a. Would the project result in an increased
need for public service (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.
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16. UTILITIES:
a. Circle utilities currently available at
the site: electricity, natural gas, water,
refuse service, telephone, sanitary sewer,
septic system, other:
All. Septic Systems are all onsite
systems.
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.
17 . SIGNATURE:
The above answers are true and
complete to the best of my
knowledge. I understand that
the lead agency is relying on
them to make its decision.
Signature: 71
Date Submitted: March 13, 1996
Page 16
B 8 6EACH
................ 8 oo❑a
❑❑❑❑
r T
....................... ❑❑❑❑❑❑
ROAD 5HOULDEPI
PARKING AREA
B EXISTING 36'
PIAMETEF PCC
CULVERT TO
LEFT EI-EVATION VIEW PLAN VIEW PEMAIN
Notes:
(1) Bottom 2 Flows of Ecology Blocks Along
6,+ Shoreline to Pemain
ROAD/PARKING SHOULDER
(2) 6' X 6' Gable Concrete CC45 Pad
Vegetation to be installed approximately 0.5'
— Line below normal elevation of beach in
,.. Beach vicinity of the pipe outfall.
Gravel Line (3) Three Large Loose Piprap Boulders
3± to be positioned at pipe out fall to
provide energy dissipation. Pock minimum
Section B-E) dimension to be greater than 3.0"
FRONT ELEVATION
M) Heavy Loose Piprap to be used to
armor and stabilize beach bank where
Ecology Blocks are removed
COMPLETED BA51N REMOVAL AND PE5TOPATION
Mason County Dept. of Sediment 5a5in removal ® Date: 3/7/cl6
Public Work5 E 7560 HWY 106 0rWN6: 55-6-2.6CO
PO box 050 (6abrie15on Site) Scale:
Shelton, WA g8554 5 34 T 22 N r 3 WWM I" 10" Sheet: 4
(360) 427-cI670 Mason County, Washington
i
HOOD CANAL HOOD CANAL
A A
BEACH BEACH
STLI.M"pASN
.CVACYT TRAr
------------------
EXI5TING 36' PCC
Xt 5HOULDEP1PARKING : CULVERT - 7.1i GRADE
A
A TO REMAIN UNCHANGED
a a
g
MW Or rAV[64fNi m6�Or rAVDC1Ji
1*06 15TM r06 57"
cavn t..rc W50WAY V6 CC TMft-tC W50MAY M
SECTION A-A GPAVEL IN 5TILLIN6 5EGTION A-A
BA51N TO BE ALLOWED TO (see Detail 5beet 4)
01551PATE NA TUPALL Y
EX15 TING PIIOP05E0
Ma5on County Dept, of 5eaiment basin Femoval ® Date: 3/8/g6
Public Works E 6040 HWY 106 DF'WN6: 55-6-16CO
PO box 1650 (6abriel5on Site) Scale:
Shelton, WA g8564 5 34 T 22 N F 3 WWM 1' = 20' 5heet: 3
(360) 427-CI670 Ma5orl County, Washington
B 8 6EACH
1 ❑
................ g ❑❑ ❑
❑❑❑❑
❑❑❑❑
Dili❑❑❑❑❑❑
ROAD SHOULDER/
PARKING AREA
0 EXISTING 36'
DIAMETER PCC
CULVERT TO
LEFT ELEVATION VIEW PLAN VIEW REMAIN
Notes:
(D All but 5 Ecology Blocks to be removed
6'+
ROAD/PARKING SHOLA-PER (2) 6' X 6' Cable Concrete CC45 Pad
to be installed approximately 0.5'
below normal elevation of beach in
Vegetation Line vicinity of the pipe outfall.
Beach Gravel Line (5) Three Large Loose Riprap Boulders
to be positioned at pipe outfall to
3'± provide energy di55ipatjon. Rock minimum
d.imen5ion to be greater than 3.0'
5ec tion O-6
FRONT ELEVATION (4) Heavy Loose Ri rap to be used to
armor and stabilize beach bank where
Ecology blocks are removed
COMPLETED PA51N REMOVAL AND RESTORATION
Mason County Dept. of Sediment Oa5in removal ® Date: 3/71%
Public Works E 72g2 HWY 106 DrWNG: 55-N-2.6CD
PO Box 050 05mith/Nordstrom Site) Scale:
Shelton, WA g8564 5 33 T 22 N r 3 WWM 1' 3 10' Sheet: 2
(360) 427-cl67O Mason County, Washington
HOOD CANAL HOOD CANAL
A A
BEACH BEACH
hTll.lJC DAS/J
4GVABJr 7XA/
EXI5TW6 3(, PCC
SHOULDEIP/PARKING X. CULVERT - 2.5% GRADE
A A TO REMAIN UNCHANGED
MM Cr PAVfM!Nr MAX a/AVMCW
F06 6TME rob S7R►e
Lawn-re MFffAY KX CtWTE -tV MWAY XX
SECTION A-A GRAVEL IN 5TILLIN6 SECTION A-A
PA51N TO PE ALLOWED TO (see Detail Sheet 2)
01551PATE NATI)PALLY
EXISTING PKOP05ED
Mason County Dept. of Sediment 6a5in )'emoval ® Date: 5/7/g6
Public Works E 72c12 HWY 106 PFWNG: 55-N-I.GCO
PO Box 1650 05mith/NorAtrom Site) Scale:
Shelton, WA g8554 5 55 T 22 N K' 3 WWM 1' = 20' 5heet: 1
(560) 427-g670 Mason County, Washington
VICINITY MAP
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Ecology Block Debris Basin Removals Sikes
Mason County Department of Public Works Points
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Division of Engineering and Construction
411 North Fifth Street, P.O. Box 1850, Shelton, Wa. 98584
Jerry Hauth, P.E. , L.S. , County Engineer
Phone (206) 427-9670 Ext. 461
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VICINITY MAP
(No Scale)
Ecology Block Debris Basin Removals
Mason County Department of Public Works
Division of Engineering and Construction
411 North Fifth Street, P.O. Box 1850, Shelton, Wa. 98584
Jerry Hauth, P.E. , L.S. , County Engineer
Phone (206) 427-9670 Ext. 461