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CITY OF RENTON
DEPARTMENT OF COMMUNITY & ECONOMIC
DEVELOPMENT
MEMORANDUM
Date: October 26, 2010
To: City Clerk's Office
From: Stacy M Tucker
Subject: Land Use File Closeout
Please complete the following information to facilitate project closeout and indexing by the City
(-Iprk'S flffirp_
Project Name:
Lake Washington Beach Lift Replacement
LUA (file) Number:
LUA-10-054, CAR
Cross -References:
AKA's:
Project Manager:
Rocale Timmons
Acceptance Date:
August 19, 2010
i Applicant:
City of Renton
owner:
Same as applicant
Contact:
Mike Benoit - City of Renton
R PID Number:
3344500775
ERC Decision Date:
ERC Appeal Date:
Administrative Approval:
August 19, 2010
Appeal Period Ends:
September 2, 2010
a
Public Hearing Date:
Date Appealed to HEX:
By Whom:
HEX Decision:
Date:
Date Appealed to Council:
' By Whom:
Council Decision:
Date:
Mylar Recording Number:
Project Description: Request for Critical Areas Exemption to allow the replacement of the Lake
Washington beach lift station,
that is used to provide sanitary sewer service to the restrooms and
bath -house located in the south
portion of Gene Coulon Memorial Beach Park.
Location:
1201 Lake Washington Blvd N
�.omm�nLs:
DEPARTMENT OF COMMUNITY C -it off
AND ECONOMIC DEVELOPMENT C ��, r I _., r I. ..:,..,.
PLANNING DIVISION
CERTIFICATE OF EXEMPTION
FROM CRITICAL AREAS REGULATIONS
EVALUATION FORM & DECISION
DATE OF PERMIT ISSUANCE:
LAND USE ACTION FILE NO.:
PROJECT NAME:
PROJECT MANAGER:
OWNER/APPLICANT:
CONTACT (if other than Owner):
PROJECT LOCATION:
CRITICAL AREA:
August 19, 2010
LUA10-054, CAR
Lake Washington Beach Lift Replacement
Rocale Timmons, Associate Planner
City of Renton
1055 S. Grady Way
Renton, WA 98057
Michael Benoit
City of Renton
1055 S. Grady Way
Renton, WA 98057
1201 Lake Washington Blvd N
Stream (John's Creek)
PROPOSAL DESCRIPTION: The applicant, the City of Renton, is proposing to replace the
Lake Washington beach lift station. This station is used to provide sanitary sewer service to the
restrooms and bath -house located in the south portion of Gene Coulon Memorial Beach Park. The
station was constructed in 1969 and requires replacement. The area of work is located within the
buffer of John's Creek, a Class 2 waterbody. The new station would be constructed utilizing specialized
"chopper" pumps designed to pass foreign debris and prevent clogging. The project is categorically
exempt from Environmental "SEPA" Review. The area of work is approximately 18,000 square feet
and is located within the R-1 zoning designation.
EXEMPTION JUSTIFICATION: Pursuant to RMC4-3-050C.S.g.i Maintenance and
Construction — Existing Uses and Facilities, of the Critical Areas Regulations is hereby granted:
RMC4-3-050C.5.g.i. Remodeling, Replacing, Removing Existing Structures, Facilities, and
Improvements: Remodeling, restoring, replacing or removing structures, facilities and other
X improvements in existence on the date this section becomes effective and that do not meet
the setback or buffer requirements of this section provided the work complies with the
criteria in RMC 4-10-090.
FINDINGS: The proposed development is consistent with the following findings pursuant to RMC
section 4-3-050C_5:
City of Renton Department of Corr ity & Economic Development Certificate of F tion from Critical Areas Regulations
LAKE WASHINGTON BEACH LIFT REPLACEMENT LUA10-054, CAR
DATE OF PERMIT: August 17, 2010 Page 2 of 2
1. The activity is not prohibited by this or any other chapter of the RMC or state or federal law or
regulation.
2. The activity will be conducted using best management practices as specified by industry
standards or applicable Federal agencies or scientific principles if submitted plans are followed
and the conditions of approval of this exemption are met.
3. Impacts will be minimized and disturbed areas will be immediately restored, if submitted plans
are followed and the conditions of approval of this exemption are met.
4. Where stream or buffer disturbance occurs during construction or other activities in accordance
with this exemption, the site will be revegetated with native vegetation as required and
monitored for success as a condition of approval for this exemption.
DECISION: An exemption from the critical areas regulations is approved for the stream and its
buffer.
SIGNATURE:
4�--. q
C.E. "Chip" Vincent, Director Date
Planning Division
APPEALS: Appeals of permit issuance must be filed with the City of Renton Hearing Examiner by 5:00
p.m. on September 2, 2010. Appeals must be filed in writing, together with the required fee to the City
of Renton Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. City of Renton
Municipal Code Section 4-8-110 governs appeals to the Hearing Examiner. Additional information
regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 430-6510.
EXPIRATION: Five (5) years from the date of approval (signature date).
Amok Ai C)_ t'
City of Renton City Of Rexft0t1
LANDUSE PERMIT ' ar)ning ❑f.ViSic)o
A" U ici
MASTER APPLICATION.
--' _51'
PROPERTY OWNER(S)
NAME: City of Renton
ADDRESS: 1055 S Grady Way
CITY: Renton ZIP: 98057
TELEPHONE NUMBER: 425-430-7206
APPLICANT (if other than owner)
NAME:
COMPANY:
ADDRESS:
CITY: ZIP:
TELEPHONE NUMBER:
CONTACT PERSON
NAME: Michael Benoit
COMPANY: City of Renton
ADDRESS: 1055 S Grady Way
CITY: Renton ZIP: 98057
TELEPHONE NUMBER AND EMAIL ADDRESS:
425-430-7206
benoit@rentonwa.gov
PROJECT INFORMATION
PROJECT OR DEVELOPMENT NAME:
Lake Washington Beach Lift Station Replacement
PROJECT/ADDRESS(S)/LOCATION AND ZIP CODE:
Coulon Beach Park
1201 Lake Washington Blvd N
KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S):
334450-0775
EXISTING LAND USE(S):
Public Park
PROPOSED LAND USE(S):
Public Park
EXISTING COMPREHENSIVE PLAN MAP DESIGNATION:
RLD— Residential Low Density
PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION
(if applicable)
WA
EXISTING ZONING:
R-1 —Residential 1 du /acre
PROPOSED ZONING (if applicable):
NIA
SITE AREA (in square feet): 18,000 sgft
SQUARE FOOTAGE OF PUBLIC ROADWAYS TO BE
DEDICATED:
NIA
SQUARE FOOTAGE OF PRIVATE ACCESS EASEMENTS:
NIA
PROPOSED RESIDENTIAL DENSITY IN KNITS PER NET
ACRE (if applicable)
NIA
NUMBER OF PROPOSED LOTS (if applicable)
NIA
NUMBER OF NEW DWELLING UNITS (if applicable):
NIA
W:%WWP-27-3557 Lake Washin«ton 13cach Lift Sta Eli niinationlpermilSlnriShrripp CA Excnipl.doc
PR,,JECT INFORMAT
NUMBER OF EXISTING DWELLING UNITS (if applicable):
NIA
SQUARE FOOTAGE OF PROPOSED RESIDENTIAL
BUILDINGS (if applicable):
NIA
SQUARE FOOTAGE OF EXISTING RESIDENTIAL
BUILDINGS TO REMAIN (if applicable): N/A
SQUARE FOOTAGE OF PROPOSED NON-RESIDENTIAL
BUILDINGS (if applicable): NIA
SQUARE FOOTAGE OF EXISTING NON-RESIDENTIAL
BUILDINGS TO REMAIN (if applicable): NIA
NET FLOOR AREA ON NON-RESIDENTIAL BUILDINGS (if
applicable): NIA
NUMBER OF EMPLOYEES TO BE EMPLOYED BY THE NEW
PROJECT (if applicable). NIA
ION conti.,4.ed
PROJECT VALUE:
$350,000
IS THE SITE LOCATED IN ANY TYPE OF
ENVIRONMENTALLY CRITICAL AREA, PLEASE INCLUDE
SQUARE FOOTAGE (if applicable):
❑ AQUIFIER PROTECTION AREA ONE
❑ AQUIFIER PROTECTION AREA TWO
❑ FLOOD HAZARD AREA
sq. ft.
❑ GEOLOGIC HAZARD
sq. ft.
❑ HABITAT CONSERVATION
sq. ft.
❑ SHORELINE STREAMS & LAKES 16.585
sq. ft.
❑ WETLANDS
sq. ft.
LEGAL DESCRIPTION OF PROPERTY
Attach le al description on separate sheet with the following information included
SITUATE IN THE _Southwest_ _- QUARTER OF SECTION _05, TOWNSHIP 23N , RANGE 5E ,
IN THE CITY OF RENTON, KING COUNTY, WASHINGTON
TYPE OF APPLICATION & FEES
List all land use applications being applied for:
1. Critical Areas Exemption 0•
2, 4.
Staff will calculate applicable fees and postage: $
AFFIDAVIT OF OWNERSHIP
I, (Print Name/s) 1-4 A L*-' ° Jr � a C aL- • r , declare under penalty of perjury under the laws of the State of
Washington that I am (please check one) the current owner of the property involved in this application or 4� the authorized representative to act
for a corporation (please attach proof of authorization) and that the foregoing statements and answers herein contained and the information herewith are
in all respects true and correct to the best of my knowledge and belief. I�
I certify that I know or have satisfactory evidence that r !-. t l fl` .l i h..C•.a.1 l
signed this instrument and acknowledge it to be his/her/their free and voluntary
act for the uses and purposes mentioned in the instrument.
(Signature of Owner/Representative)
irtrlf
_ ,
Notary Public in and for t17J State of Washington
(Signature of Owner/Representative) __..—. _ _ tmn'
Notary (Print)
y 0S
My appointment expires: ;� R ',i Y'rir�.�
WAS
Fr��ni��rrrr�A,���.
W:1WW1'-27- ,Sj7 Lakc Washington Bcach Lift Sta CA Excmpt.dnc ?
PF,wJECT INFORMATION (conti,,ued)
Legal HILLMANS LK WN GARDEN OF EDEN #5 BLKS 360 & 361 SD ADD TGW SH LDS ADJ
TGW POR GL 4 SEC 05-23-05 & SH LDS ADJ DAF - BAAP N 56-32-07 W 65.018 FT FR
NXN OF GOV MDR LN & S LN SD SEC 5 TH N 56-32-07 W 1221.78 FT TO INNER
HARBOR LN TH S 45-45-00 W 317.92 FT TH S 44-16-00 E 680 FT MIL TO S LN OF SD
SEC 5THEALG SID SLNOFSDSEC 765.5FTM/LTOWILY BNDRYOFBN100FT
RNV TH NELY ALG SD WLY BNDRY TO POINT OF BEGINNING TGW AREA IN FRONT
OF LOTS 1 THRU 9 BLOCK 360 OF HILLMANS LK WN GARDEN OF EDEN #5
W -\W WP -27-3»7 Lake Washington Beach Lift Sta Eiir[iinauionlpermitslrnasterapp CA Exemp[.doc - 3 -
Lake Washington Beach Lift Station Replacement Proiect Narrative:
The City of Renton needs to replace the Lake Washington Beach Lift Station. This lift
station provides sanitary sewer service to the restrooms and bathhouse located in the
south portion of Gene Coulon Memorial Beach Park. It is not designed or proposed to
provide for any "regional" service outside of the park usage.
The station was constructed in 1969. The station has reached the end of its useful life. In
addition to age, there are other operations and maintenance issues with the station that
need to be resolved as part of the replacement.
The uncontrolled public use of the site has caused operations problems as parks patrons
have been known to flush everything through the restrooms, up to and including bathing
suits and beach towels. This has caused consistent plugging of the pumps shutting down
the station and the need for maintenance call outs. The new station will be constructed
utilizing specialized "chopper" pumps designed to pass foreign debris and prevent
clogging.
The existing station is located in the middle of the parking lot in an unsecured location.
During the park's high usage periods, when the station is going to be in most need of
maintenance or repair, it is difficult to get to the station with equipment. What access we
do have potentially blocks patron vehicles. In addition, since the area is unsecured, the
maintenance staff has to utilize additional manpower to prevent the curious public from
approaching the opened underground structures.
The new station will be located at the outer rim of the parking area, away from the flow
of patron traffic. It will also be enclosed by a short fence. The new area will provide for
an open space for the crews to park their vehicle during typical maintenance activities
that won't block usage by parks patrons and act as a security barricade to prevent casual
approach to the work area.
We have worked with the Parks Department to best place the station within the available
situation. The project will eliminate four parking stalls and a small planter that contains a
15" diameter tree. We will regain three parking stalls by restriping the lot in the area.
Construction of the new station will include:
• The installation of an eight foot diameter underground wet well (storage) with
submersible pumps installed inside.
• The installation of an underground vault for the valving.
• Installation of approximately 50 feet of 8" gravity sewer main to route flows to
the new station
• Installation of a 3/a" water service for maintenance of the site.
• Abandon the old lift station in place.
• Seal coat and restripe parking lot in the construction area. Cjty Of Renton
• Installation of an above ground cabinet housing the control and telemePi�spivis+art
• Installation of a 42" high fence around lift station. AUG W
5 10iQ
REQUEST FOR CRITICALcityof Reinto,
AREAS EXEMPTION a1111fng Division
(FOR SEPA EXEMPT ACTIVITIES) A'IU ._,5 2010
City of Renton Planning Division AR, C-(CfE8LJE
1055 South Grady Way -Renton, WA 98057
Phone: 425-430-7200 Fax: 425-430-7231
Applicant Name Project Name Phone Number
City of Renton Wastewater Utility Lake Washington Beach Lift Station Replacement (425) 430-7206
Contact Michael Benoit
Brief Description of Project
The City of Renton needs to replace the Lake Washington Beach Litt Station. This lift station provides sanitary sewer service to the restrooms and bathhouse
located in the south portion of Gene Coulon Memorial Beach Park. It is not designed or proposed to provide for any "regional" service outside of the park usage.
The station was constructed in 1969. The station has reached the end of its useful life. In addition to age, there are other operations and maintenance issues with
the station that need to be resolved as part of the replacement.
Both the existing station and the proposed station are located in the buffer of John's Creek.
Type of Critical Area
Class 2 Water (John's Creek)
❑ Work Occurs in Critical Area 10 Work Occurs in Buffer
PURPOSE: Exempt activities provided with a letter of exemption from the Development Services
Administrator may intrude into a critical area or required buffer (Subject to any conditions or requirements
provided by the Administrator).
APPLICABILITY OF EXEMPTIONS: The following is a general list of activities that may be exempt from
the critical areas regulations. More specific descriptions of the activities are contained in the Critical
Areas Regulations. Some of the listed activities may not be exempt in certain critical areas. The Planning
Division will evaluate you request according to the City of Renton Critical Areas Regulations in RMC 4-3-
0500, J, L, and N.
I AM REQUESTING A CRITICAL AREAS EXEMPTION FOR ONE OR MORE OF THE FOLLOWING
ACTIVITIES:
❑ Conservation, Enhancement, and Related Activities:
• Conservation or preservation of soil, water, vegetation, fish, and other wildlife
• Enhancement activities as defined in chapter 4-11 RMC 1
• Any critical area, buffer restoration, or other mitigation activities that have been approved
by the City
❑ Research and Site Investigation:
• Nondestructive education and research
• Site investigative work necessary for land use application submittals such as surveys, soil
logs, etc.
❑ Agricultural, Harvesting, and Vegetation Management:
• Harvesting wild foods
• Existing/Ongoing agricultural activities 1
WAVVWP-27-3557 Lake Washington Beach Lift Sta Elimination1permitslcaoexemption-sepaexempt LK WASH BEACH LS.doc - 1 - 02
• Removal of dead, terminally diseased, damaged, or dangerous ground cover or hazardous
trees which have been certified as such by a forester, registered landscape architect, or
certified arborist
❑ Surface Water Alteration:
• New surface water discharges provided the discharge meets the requirements of the Storm
and Surface Water Drainage Regulations' 2 3
New or modified regional stormwater facilities' 2 3
• Flood hazard reduction ' 34 6
® Roads, Parks, Public and Private Utilities:
• Relocation of Existing Utilities out of Critical Area and Buffer
• Maintenance, operation, and repair of existing parks, trails, roads, facilities, and
utilities' 2
• Installation, construction, replacement, or operation of utilities, traffic control, and
walkways within existing improved right -if -way or easement' 2
• Modification of existing utilities and streets by 10% or less' 2 5
• Management and essential tree removal for public or private utilities, roads and
public parks'
❑ Wetland Disturbance, Modification, and Removal:
• Any activity in small Category 3 wetlands' 2 3 a 5
• Temporary disturbances of a wetland due to construction activities that do not include
permanent filling' 2 3 6
❑ Maintenance and Construction for Existing Uses and Facilities:
Remodeling, replacing, or removing existing structures' 2
• Normal and routine maintenance and repair of any existing public or private uses and
facilities where no alteration of the critical area and required buffer or additional fill
materials will be placed' 2
• Construction activity connected with an existing single family residence or garage, provided
that no portion of the new work occurs closer to the critical area or required buffers than
the existing structure' 2
• Existing activities which have not been changed, expanded or altered provided they
comply with the applicable requirements of chapter 4-10 RMC'
❑ Emergency Activities:
• Removal of trees or ground cover by a City department, agency, public, or private utility in
an emergency situation
• Public interest emergency use, storage, and handling of hazardous materials by
governmental organizations in an Aquifer Protection Area
ADDITIONAL PERMITS: Additional permits from other agencies may be required. It is the applicant's
responsibility to obtain these other approvals. Information regarding these other requirements may be
found at http:/Iapps.ecy.wa.gov/opas/
W:IWWP-27-3557 Lake Washington Beach Lift Sta Elimination1permitslcaoexemption-sepaexempt LK WASH BEACH LS.doc - 2 - 02
For City Use Only
❑ Exemption Granted ❑ Exemption Denied
C. E. "Chip" Vincent, Planning Director Date:
Planning Division
Conditions of Approval:
'Exemption does not apply in Aquifer Protection Areas
2Exemption does not apply in Flood Hazard Areas
3Exemption does not apply in Geologic Hazard Areas
4Exemption does not apply in Habitat Conservation Areas
sExemption does not apply in Streams and Lakes: Class 2 to 4
6Exemption does not apply in Wetlands
W:1WWP-27-3557 Lake Washington Beach Lift Sta Eliminationlpermitslcaoexemption-sepaexempt LK WASH BEACH LS.doc - 3 - 02
� 7
e
June 28, 2010
5309 Shilshole Avenue N
Suite 200
Seattle, WA 98107
206.7B9.9658 phone
206.789.9684 fax
g �;�ntor�
vision
AUG -,5 2810
Michael Benoit %'e
City of Renton Wastewater Utility § j� JO
1055 S. Grady Way
Renton, WA 98057
Subject: Lake Washington Beach Lift Station Replacement Project— Stream Study
Dear Mr. Benoit:
www.adolfson.com
ESA Adolfson is pleased to present the results of our field assessment of John's Creek, which is
associated with the City of Renton's Lake Washington Beach Lift Station Replacement Project. ESA
Ado]fson biologist Steven Krueger visited the project area on June 11, 2010 and the following
discussion describes the proposed action, Iocation of the proposed action, aquatic habitat observed
within the project area, ecological functions provided by John's Creek, and potential impacts of the
proposed action upon the habitats and species that utilize the project area.
Project Location
The project area is located at 1100 Lake Washington Boulevard North (Parcel No. 3344500775) in
Renton, Washington within an existing paved parking area of Gene Coulon Memorial Beach Park (SW
'/a Section 5, Township 23 North, Range 5 East) (Figure 1). The project area is entirely within an
established parking area and bounded by John's Creek to the east, parking areas to the west and south,
and lawn areas to the north (Figure 2).
Project Description
The City of Renton is proposing to replace the Lake Washington Beach Lift Station (station). The
station was constructed in 1969 and currently provides sanitary sewer service to the restrooms and
bathhouse located in the south portion of Gene Coulon Memorial Beach Park (Photo 1). The existing
facility is not designed or proposed to provide for any "regional" service outside of the park usage.
The age of the facility in addition to other operations and maintenance issues have necessitated the
replacement of the facility. The uncontrolled public use of the site has caused operations problems as
parks patrons have been known to flush everything through the restrooms, up to and including bathing
suits and beach towels. This has caused periodic plugging of the pumps shutting down the station and
the need for maintenance call outs. The new station will be constructed utilizing specialized "chopper"
pumps designed to pass foreign debris and prevent clogging. In addition, the existing station is located
in the middle of the parking lot in an unsecured location. During the park's high usage periods, when
the station is going to be in most need of maintenance or repair, it is difficult to get to the station with
equipment and furthermore there is the potential for blocking patron vehicles where access is available.
-'SAA d oIT so
JA
Michael Benoit
June 28, 2010
Page 2
The unsecured location also results in the need for additional manpower to prevent the curious public
from approaching the opened underground structures.
The new station is proposed to be located at the outer rim of the parking area, away from the flow of
patron traffic (Photo 2). It will also be enclosed by a short fence. The new area will provide for an open
space for the crews to park their vehicle during typical maintenance activities that won't block usage by
parks patrons and act as a security barricade to prevent casual approach to the work area. The overall
project will eliminate four parking stalls and a small planter island that contains a 15" diameter
sycamore tree (Photo 2). Three parking stalls will be recovered by restriping the lot in the area.
Construction elements of the new station will include:
• The installation of an eight foot diameter underground wet well (storage) with submersible
pumps installed inside.
• The installation of an underground vault for the valving.
• Installation of approximately 50 feet of 8 -inch gravity sewer main to route flows to the new
station
• Installation of a 3/4 -inch water service for maintenance of the site.
• Abandon the old lift station in place.
• Seal coat and restripe parking lot in the construction area.
• Installation of an above ground cabinet housing the control and telemetry panels.
• Installation of a 42 -inch high fence around lift station.
Regulatory Environment
John's Creek is classified as a Class 2 Water by the City of Renton. Class 2 Waters include any
intermittent or perennial salmonid bearing waters, which are mapped on Figure Q4 (Renton Water Class
Map) as a Class 2 Water and/or that were historically and/or currently known to support salmonids,
including resident trout, at any stage in the species life cycle (Renton Municipal Code (RMC) 4-30-
050L-I(a)(ii)). John's Creek is identified in the Renton Water Class Map as a Class 2 Water and is
known to be used by both coho salmon and sockeye salmon for spawning. Juvenile Chinook salmon are
also believed to use the lower reaches of John's Creek for rearing (Larry Fisher, Washington
Department of Fish and Wildlife (WDFW) Habitat Biologist, personal communication, June 1, 2010). A
Class 2 Water requires a 100 -foot buffer extending landward from the OHWM. The entire project area
is within the buffer of John's Creek.
1]S r
Michael Benoit
June 28, 2010
Page 3
Field Assessment
ESA Adolfson senior fisheries biologist, Steven Krueger, visited the project area on June 11, 2010 in
order to assess the habitats within John's Creek and assess functions of the riparian area. The study area
included John's Creek adjacent to the identified work area and John's Creek extending 100 feet
upstream and downstream of the project area (Figure 2). A discussion of habitat is broken down into
three reaches, which includes that portion of John's Creek extending 100 feet downstream of the
northeast corner of the project area (Reach 1), John's Creek adjacent to the project area (Reach 2), and
John's Creek extending 100 feet upstream of the southeast corner of the project area (Reach 3; Figure
2).
Reach 1
John's Creek within Reach I contains primarily glide habitat with an average wetted width of 20 feet
(Photo 3). The channel is confined between earthen berms (levees), presumably for flood control, on
both sides of the channel for much of the reach length; however, at the lower end of the reach the stream
has more access to floodplain habitat and the distance between the ordinary high water marks (OHWM)
is approximately 37 feet. The distance between the OHWM throughout the more confined portions of
the reach is approximately 24 feet. The average depth within the glide habitat was 1.0 foot with a
maximum depth of 1.5 feet. The dominant substrate is large gravel and cobble with a sub -dominant
substrate of sand. In general, gravels are 20 to 30 percent embedded with fines such as sand and silt.
One lateral scour pool was identified at the upstream end of the reach, which has a maximum depth of
2.5 feet and an average depth of two feet with 25 feet of associated undercut bank (Photo 4).
Riparian vegetation is generally limited to a narrow band along both banks with an average width of
approximately 25 feet. Dominant species include western red cedar (Thuja plicata), big -leaf maple
(Acer macrophyllum), vine maple (Acer circinatum), willow (Salix spp.), sword fern (Polystichum
munitum), Himalayan blackberry (Rubus armeniacus), reed canarygrass (Phalaris arundinacea),
creeping buttercup (Ranunculus repens), and giant horsetail (Equisetum telmatei) (Photo 5).
Reach 2
John's Creek within Reach 2 contains the highest diversity of habitat types including 134 feet of glide
habitat (Photo 6) and 64 feet of low -gradient riffle habitat (Photo 7). Glide habitat substrate was
dominated by large gravels with a sub -dominant substrate of sand. Gravels were highly embedded with
fines. The average depth in the glide habitat is 1.0 foot with a maximum depth of approximately 1.5
feet. The average depth in the riffle habitat is four inches with a maximum depth of six inches.
Dominant substrate in riffle habitat is large gravel with a sub -dominant substrate of sand. Gravels are
moderately embedded with fines. Riparian vegetation was similar to that of Reach 1; however, the width
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Michael Benoit
June 28, 2010
Pagc 4
of riparian vegetation on the right bank (looking downstream) was slightly less than on the left bank and
varied between 15 and 20 feet.
The wetted channel width within Reach 2 varied from 10 to 12 feet. The channel throughout this reach
was confined between earthen levees with some sporadic riprap armoring. Bank undercutting was
common in many areas and is likely attributed to the highly erosive nature of the bank material and
channelization.
Reach 3
John's Creek within Reach 3 contains approximately 30 feet of low -gradient riffle habitat (Photo 8) and 70
feet of glide habitat (Photo 9). Glide habitat substrate was dominated by sand with a sub -dominant
substrate of large gravel. The average flow depth in the glide habitat is one -foot with a maximum depth
of approximately 1.5 feet. The average depth in the riffle habitat is three inches with a maximum depth
of six inches. Dominant substrate in riffle habitat is large gravel and cobble with a sub -dominant
substrate of sand. Gravels are moderately embedded with fines. Riparian vegetation composition was
similar to that of Reaches 1 and 2; however, the width of riparian vegetation was similar to that of
Reach 2.
The wetted channel width within Reach 3 varied from 10 to 12 feet. The channel throughout this reach
was confined between earthen levees with some sporadic riprap armoring. Bank undercutting was
common in many areas and is likely attributed to the highly erosive nature of the bank material and
channelization (Photo 10).
General Habitat Conditions and Functional Assessment
John's Creek flows through a highly developed area and has been subjected to alterations such as
channelization, armoring, stormwater inputs and confinement between levees for flood control purposes.
The confinement of the channel between levees has reduced the floodplain connectivity and reduced
connections with streamside wetlands, which are important for reducing stream flow during high flow
events and contributing flow through groundwater interactions between wetlands and stream during the
drier summer months.
Habitat complexity is also an issue with John's Creek. In general, there is an overall lack of structure
within the stream that would promote the formation of complex habitats such as pools. There were no
pieces of large woody debris (LWD) encountered during the site visit. LWD plays an important role in
habitat formation and the sorting of bedload material. Without LWD, the channel has a reduced
capability of pool formation and there is a reduced capability of the stream to retain spawning sized
gravels. LWD is also important for providing cover to both juvenile and adult salmonids and may also
provide flow breaks during high flow events. The narrow band of riparian vegetation adjacent to John's
Creek does provide some cover and shading for the stream and there is a potential for future LWD
recruitment; however, under existing conditions the lack of LWD is a salmonid limiting factor for this
stream.
s 1/1k
Michael Benoit
June 28, 2010
Page 5
Stormwater is also a factor in overall habitat conditions. Stormwater introduced into this system has
four primary effects on habitat. During heavy rains, excess stormwater is diverted to the stream at a rate
that would not occur in an undeveloped watershed. Rainfall flows much faster off impervious surfaces
such as roadways and parking lots as opposed to falling into vegetation and being allowed to slowly
infiltrate into subsurface soils. This results in higher peak flows than that which would occur in an
undisturbed watershed. Altered peak flows can also result in excessive erosion and subsequently
increased turbidity and sedimentation of spawning gravels. Rainfall that is not allowed to infiltrate into
subsurface soils and replenish aquifers reduces the amount of groundwater and surface water exchange
during the drier summer months resulting in reduced base flows. Water quality is also an issue with
stormwater. Stormwater from roadways and parking lots are known to contribute to reduced water
quality by introducing pollutants such as fuel, oil, grease, heavy metals, and fecal coliform bacteria. At
least two stormwater outfalls were observed within Reach 2 (Photo 11).
Substrate also plays a role in the ability of the stream to function properly and contribute to the overall
productivity within the stream. The dominant substrate throughout the project area was large gravel;
however, the gravel was moderately to highly embedded with fines. Fines present within the interstitial
spaces of gravel can limit the flow of oxygen around salmonid eggs deposited within the gravel layer
resulting in reduced reproductive success. Much of the gravel present in the stream contain a thick
covering of algae or other aquatic plant growth, which may indicate several problems including
inadequate flow during the drier summer months or the presence of elevated concentrations of nutrients
(Photo 12). The confinement of the channel within the levees also prohibits the stream from migrating
within the floodplain. The ability of the channel to move limits the ability to recruit sediment, including
gravels, from other areas within the floodplain.
Fish and Wildlife Observations
John's Creek is known to be used by both coho salmon and sockeye salmon for spawning. Juvenile
Chinook salmon are also believed to use the lower reaches of John's Creek for rearing (Larry Fisher,
Washington Department of Fish and Wildlife (WDFW) Habitat Biologist, personal communication,
June 1, 2010). No observations of fish were made during the June 11, 2010 site visit; however,
spawning sized gravels are present within John's Creek and it is anticipated that adult coho and sockeye
salmon as well as resident cutthroat trout would use John's Creek for spawning and rearing. The quality
of spawning habitat has been degraded by sedimentation and dense algal growth, but spawning is still
likely to occur. The only aquatic species identified within the project area was a crayfish.
Other wildlife species observed included the northwestern crow (Corvus caurinus), chestnut -backed
chickadee (Poecile rufescens), and merlin (Falco columbarius). The merlin is a state candidate species,
but has no federal listing at this time. No observations of mammals, amphibians, or reptiles were
documented. The project area likely supports a diverse number of bird species commonly associated
with riparian habitats and is likely used by many species for breeding and foraging purposes. Mammals
having a potential to occur in the project area are those species that have become accustomed to the
Michael Benoit
June 28, 2010
Page 6
urban environment and may include species such as raccoons, rats, opossums, and coyotes. Use of the
project area by mammalian species is likely limited to migration and foraging. According to WDFW's
Priority Habitat and Species (PHS) database, the project area and all of Gene Coulon Memorial Beach
Park is included within an area identified as Urban Natural Open Space (LINOS). No other priority
habitats or species were identified from the PHS database in the immediate vicinity of project area.
Project Related Impacts
As discussed above in the project description, all work will occur within the currently developed portion
of Gene Coulon Memorial Beach Park and within the buffer of John's Creek. The project will be
constructed within the existing parking lot, which is completely enclosed by a continuous system of
curbing. Potential impacts of the proposed project are primarily related to soil disturbing activities,
which if not properly controlled with appropriate temporary erosion and sediment control (TESL) best
management practices (BMPs), can result in the erosion of upland soils and the subsequent delivery of
sediment laden runoff to John's Creek. Sedimentation is a concern since it can cover spawning gravels
and thereby reduce the reproductive success of salmonids using the stream. Increased turbidity is a
concern because it can interfere with the respiration of fishes, delay spawning activity, and result in
behavioral changes.
The project proponent will limit the majority of work to the paved portion of the parking lot that is
completely enclosed by curbing. The only exception to this will be the removal of a small planter island
at the south end of the proposed lift station, which will be removed to allow for the creation of
additional parking spaces to compensate for those spaces lost during the construction of the new station.
Sediment and erosion control BMPs such as straw bales or silt fencing will be in place during removal
of the planter island and until such point that a new curb is installed. No stockpiling of excavation
materials will be allowed outside of the enclosed parking area. Catch basins within the parking area that
receive runoff from the construction area will be fitted with filter fabric or other similar material to
remove any sediment from runoff. The work area will be swept and cleaned upon project completion to
remove any remaining soil.
The removal of the planter island will require the removal of one 14 -inch diameter non-native
landscaping tree (sycamore) and some landscaping shrubs (Photo 2). This tree is located approximately
30 feet from the OHWM of John's Creek. The distance of the tree from the stream combined with the
minimal nutrients provided by this one tree will not likely have an adverse affect on riparian functions
within the project area. Tree removal is an allowed exemption under RMC 4-30-050C (5) e granted that
the project proponent place the tree within the riparian buffer of the stream. Since LWD is limited
within this stream, placement of the tree within the riparian buffer would contribute to improving
habitat conditions by providing cover and increased habitat complexity. While it would be beneficial to
have the removed tree placed within the stream, this may not be possible due to the existing dense
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Michael Benoit
June 28, 2010
Page 7
vegetation between the project area and the stream. It is likely that more damage would be done to the
existing riparian vegetation during placement of the tree, which would outweigh any benefits provided
to the habitat and overall function of the riparian area by placing the tree within the riparian buffer. All
other trees and vegetation outside of the parking area will be unaffected by project construction.
Furthermore, all work will occur within the developed portion of the parking area protecting trees from
construction activities.
Conclusions
Overall, the proposed action will not contribute to the degradation of instream or riparian habitat within
the project area if appropriate TESL measures are in place during construction. Placement of the
removed tree within the riparian buffer or stream may provide some benefit to the stream through an
increase in habitat complexity; however, placement of the tree under existing conditions may actually
result in additional and unwarranted damage to other trees in the riparian corridor due to the existing
tree density along the stream.
Sincerely,
Steven Krueger
Senior Scientist/Managing Associate
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