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3101 Mountain View Ave N
Lake Study/No Net Loss Determination
Prepared for
Lew Residence
3101 Mountain View Ave N
Renton, Washington 98056
Prepared by
Northwest Environmental Consulting, LLC
3639 Palatine Avenue North
Seattle, WA 98103
206-234-2520
July 2022
RECEIVED
09/19/2023 JDing
PLANNING DIVISION
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 1
Project Purpose
The project purpose is to construct a new residential dock and moorage structure in Lake
Washington.
Location
The subject property is located at 3101 Mountain View Ave N (King County parcel number
3342103895) in the City of Renton, Washington (see Sheet A1.0 – in Project Drawings). The
parcel is on the waterfront of Lake Washington.
Project Description
The proposed work is to construct an approximately 160-feet long by 4-feet wide residential
dock. The new dock is being constructed to access the deepest water possible at the site for
good moorage. The dock will be supported by 20 8-inch epoxy coated steel piles and the new
decking will be grated to minimize long term impacts from the new structure. A new boat lift will
be installed at the waterward end of the dock.
During construction, a floating boom will surround the work barge, pier, and work area.
Project drawings are included in Appendix A – Project Drawings.
Approach
Northwest Environmental Consulting LLC (NWEC) biologist Brad Thiele conducted a site visit
on January 20, 2022 to evaluate conditions on site and adjacent to the site. NWEC also
consulted the following sources for information on potential critical fish and wildlife habitat along
this shoreline:
• City of Renton COR Maps online database
(https://rp.rentonwa.gov/HTML5Public/Index.HTML?viewer=CORMaps)
• Washington State DNR Natural Heritage Features database
(https://www.dnr.wa.gov/publications/amp_nh_trs.pdf?znn6z)
• Washington Department of Fish and Wildlife (WDFW): Priority Habitats and Species
online database (http://apps.wdfw.wa.gov/phsontheweb/)
• WDFW SalmonScape online database of fish distribution and ESA listing units
(https://apps.wdfw.wa.gov/salmonscape/)
Site Description
The subject property is a shoreline tract in a residential neighborhood. It has shoreline on its
west boundary with single-family homes to the north and south.
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 2
The only existing structure on the property is the house. The property has a shoreline consisting
of a bulkhead, with lawn and some garden beds landward of the bulkhead. Vegetation includes
a hedge of laurel and a dwarf deodar tree. (Photos 1 through 3).
The substrate of the lake is sand, gravel, and cobble. No submerged aquatic vegetation was
present at the time of the site visit, but observations were only possible from the shore.
Adjacent properties to the north and south contain similar shorelines and residential docks.
Lake and Stream Classifications
As a Shoreline of Statewide Significance (RMC 4-3-090B1) Lake Washington is defined as a
Shoreline of the State (RMC 4-11-190S). The Shoreline is designated as “Shoreline Residential”
and as a reach of Lake Washington (Figure 1 – Renton COR Map). No streams are present
within 500 feet of the site.
Ordinary High Water Mark
The Ordinary High Water Mark (OHWM) for Lake Washington is the line of mean high water
(RMC 4-11-150 Definitions O). The Lake Washington water depth is controlled by the Army
Corps of Engineers at the Hiram M. Chittenden Locks and is at 21.8 feet above sea level (Corps
of Engineers Datum). The OHWM at the project site is shown in Appendix A – Project Drawings.
Vegetative Cover of the Site
There are no wetlands or floodplains mapped as occurring in the study area. There are no DNR
Natural Heritage Features listed in the study area (Figure 2 – Natural Heritage Features). The
site is maintained as a residential property with lawns and various ornamental beds and trees.
Ecological Functions of Lake Washington at Site.
The site lacks native plantings that would provide habitat functions along the shoreline. Planting
additional native plantings will further increase habitat conditions at the project site. These
plants will provide overhanging cover for fish, structural diversity for birds and wildlife, detritus
for aquatic invertebrates and long-term recruitment of woody material and other allochthonous
food sources.
Species Use
Birds
Birds observed near the site include raptors, herons, eagles, waterfowl, and songbirds. Bald
eagles, protected by the Bald and Golden Eagles Protection Act and the Migratory Bird Treaty
Act, are protected as a “sensitive species” within the state of Washington (WAC 232-12-011).
Eagles were not observed in the area during the site study and no nest or adequate nesting
trees were visible along the shoreline. Bald eagles and other raptors are common on along the
shoreline of Lake Washington.
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 3
Mammals
No wild mammals were observed during the site visit, but Lake Washington is known to have
river otters, beavers, nutrias, and muskrats. Deer and coyotes are known to be present in the
vicinity.
Fish
WDFW’s PHS mapping and SalmonScape mapping tools show the following salmonid species
using Lake Washington for migration and/or rearing: residential coastal cutthroat (Oncorhynchus
clarki), winter steelhead (O. mykiss), Dolly Varden/bull trout (Salvelinus malma), sockeye
salmon (O. nerka), fall Chinook (O. tshawytscha), coho salmon (O. kisutch), and kokanee (O.
nerka). The Salmonscape database maps the site as critical habitat to the Endangered Species
Units (ESU) of Threatened Chinook and steelhead (Figure 3 – SalmonScape Map). Sockeye
spawning is mapped as occurring along the shoreline at or adjacent south of the site and within
a few hundred feet to the north of the project.
The nearest salmon stream is May Creek, located approximately 3,000 feet north of the project
area. May Creek is modeled by Washington Department of Fish and Wildlife (WDFW) for
spawning of non-listed coho and sockeye and listed Fall Chinook and winter steelhead trout.
Juveniles may rear in the waters near the project when traveling from spawning sites on other
lake tributaries to the lake’s outlet at the Locks. The project site is accessible to any fish
migrating or rearing in the lake, and Lake Washington is designated as critical habitat for
Endangered Fall Chinook salmon.
There are no other aquatic or terrestrial priority habitats or species mapped as occurring within
1,500 feet of the site. (Figure 4 – PHS Map).
Measures to Protect Trees and Vegetation
No trees will be disturbed during construction as all work will occur in-water and from the work
barge. Some minimal shoreline work will be completed to connect the dock to the shoreline.
No significant vegetation will be removed to make this connection. A planting plan is proposed
to enhance the shoreline with native trees and shrubs and should improve habitat potential for
birds and mammals that use the shoreline of Lake Washington.
Project Impacts and Conservation Measures
Direct Impacts:
Sediments: Sediment disturbance will occur below the OHWM and along the shoreline of Lake
Washington. Additionally, the tug and barge propwash may disturb sediments temporarily when
making trips to/from the site. Juvenile salmonids could be temporarily displaced or stressed by
increased turbidity. Impacts to sediments should be minimal from pile work and the project
actions are not expected to exceed State Water Quality Standards.
The boat lift will be placed in the deepest water possible at the end of the pier to lessen the
chances of turbidity during docking and castoff.
Shoreline: Planting native vegetation, especially three native cedar trees and two shore pine,
will increase the habitat functions of the shoreline by creating shade along the shoreline that will
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 4
be an improvement from the existing baseline habitat conditions at the project site. These plants
will provide overhanging cover for fish and shade the water, structural diversity for birds and
wildlife, detritus for aquatic invertebrates and long-term recruitment of woody material and other
allochthonous food sources. The proposed planting plan is included (see Appendix A - Sheet
A7.0).
Lakebed: The proposed project will add 20, 8-inch diameter steel piles. This will result in
displacement of 7 square feet of lakebed.
Noise: Construction equipment will create noise audible to neighbors and in-water. Noise
disturbance from 8-inch piles will be short-term and should have negligible effects on fish and
wildlife in the area. Work will be completed during the in-water work window when juvenile fish
are not expected to be present.
Potential spills: Short-term risks include the potential for petroleum spills that can occur with
any equipment operation. The chance of impact to the aquatic environment is reduced because
a crew trained in using spill containment measures will be on site and employ these measures
should a spill occur.
Indirect Impacts:
Shading: The proposed dock will result in 599 square feet of new overwater coverage from the
construction of the new dock.
Grated decking allows more light to penetrate the water below a dock that can increase
productivity in the littoral zone below the dock and reduce the full shade favored by salmonid
predators. Salmonid predators are known to use hard shadowing under solid-decked docks to
ambush juvenile salmonids. Reducing these hard shadows limits predation opportunity caused
by hard shading under the dock.
ThruFlow grated decking has a measured performance at 43 percent light penetration
(ThruFlow, 2020). Thus, effective cover of the area is 57% of the area of a solid decked
structure. Using grated decking results in an effective reduction of overwater coverage of 258
square feet.
Recreational Boating: The project supports continued recreational boating, which has been
identified as a limiting factor for salmonid populations in Lake Washington. The lift installation
will not introduce additional boating to Lake Washington, as the owners could still access the
lake from a public boat launch or private moorage facility.
Other Conservation measures:
Work window: The work will be completed during the prescribed in-water work window for this
area of Lake Washington (July 16 to December 31). Operating within this time frame helps
protect Chinook salmon, steelhead, bull trout and other salmonid fish species.
Best Management Practices: Applicable BMPs will be used such as a floating boom around
the in-water work area to contain any floating debris that may escape during construction. The
barge will have a perimeter containment sock to absorb oil and grease that may wash from the
barge during construction.
Hazardous material containment materials such as spill absorbent pads and trained personnel
will be required onsite during any phase of construction where machinery is in operation near
surface waters.
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 5
Mitigation Strategy
Avoidance and Minimization
Impacts to Lake Washington cannot be avoided. The project has been designed to reduce
impacts by using grated decking, minimal piling quantity and diameter, and will use BMPs to
reduce potential impacts from construction. The dock has been designed with a minimal width
and will place moorage in the deepest water possible at the site.
Mitigation Approach
Mitigation will be provided by a shoreline planting plan along the shoreline. The existing dock
and new dock uses grated decking to reduce effective overwater coverage. In addition, the
owner has opted to pay the required in-lieu fee to King County to complete the mitigation
requirements as required by the National Marine Fisheries Service using the RAP process. The
City of Renton has not codified in lieu mitigation as an option for the project.
Shoreline Function and Values Improvements
The property owner is proposing to plant three western red cedars, 2 shore pine, and over 20
native shrubs and ground covers. These plants will provide overhanging cover, structural
diversity for birds and wildlife, detritus for aquatic invertebrates and long-term recruitment of
woody material and other allochthonous food sources for aquatic invertebrates and fish. The
proposed planting plan is included (see Appendix A - Sheet A7.0 and planting plan).
The in-lieu fee will be used for conservation projects within King County improving watershed
conditions.
Conclusion
Juvenile Chinook salmon, and other salmonids, rear and migrate along the Lake Washington
shoreline.
There will be temporary impacts from noise and disturbed sediments during installation of the
pilings to construct the new docks.
The project will minimize construction effects on the environment by following the prescribed in
water work window and use applicable BMPs to prevent construction spills and debris from
escaping the area.
The long term effects of the dock will be minimized by using grated decking, minimizing the
width of the dock to less than 4 feet, placing moorage in the deepest water possible and using
the minimum number of piles and pile diameter to construct the dock. The new boat lift will be
placed in the deepest water possible at the site away from the nearshore. This will help reduce
turbidity from prop wash over the life of the project.
The planting plan will enhance the nearshore environment and increase the shoreline functions
and values at the site offsetting the impacts from the new dock in the long term.
This project has been designed to meet current residential dock standards and will use Best
Management Practices to reduce project impacts. The conservation measures are designed to
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 6
improve ecological functions or prevent further degradation of habitat and will result in No Net
Loss of ecological functions at the site.
Document Preparers
Brad Thiele Biologist 28 years of experience NWEC
NWEC followed standard acceptable field methods and protocols at the time work was
performed. These standards may include delineation of wetland and stream boundaries,
characterization, rating, functional analyses, impact assessments and mitigation of impacts.
The conclusions and findings in this report are based on field observations and measurements
and represent our best professional judgment and to some extent rely on other professional
service firms and available site information. Within the limitations of project scope, budget, and
seasonal variations, we believe the information provided herein is accurate and true to the best
of our knowledge. Northwest Environmental Consulting does not warrant any assumptions or
conclusions not expressly made in this report or based on information or analyses other than
what is included herein.
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Lew Residence
Lake Study 7
REFERENCES
City of Renton. 2021. COR Maps. Accessed July 2021 at
https://maps.rentonwa.gov/Html5viewer/Index.html?viewer=CORMaps.
City of Renton Municipal Code (RMC). 2021. RMC Section 4-8-120. Code Publishing. Accessed
July 2021 at
https://www.codepublishing.com/WA/Renton/#!/Renton04/Renton0408/Renton0408120.
html
Washington Department of Fish and Wildlife (WDFW). 2021. Priority Habitats and Species.
Online database. Accessed July 2021 at http://apps.wdfw.wa.gov/phsontheweb/
WDFW. 2021. SalmonScape. Online database. Accessed July 2021 at
http://apps.wdfw.wa.gov/salmonscape/
Washington State Department of Natural Resources. 2021. Sections that Contain Natural
Heritage Features. Access July 2021 at
https://www.dnr.wa.gov/publications/amp_nh_trs.pdf?znn6z
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Appendix A:
Project Drawings
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
SITE PLAN
SUBJECT
PROPERTY
SHEETA1.0 NWS-2021-XXX
11PAGE 1 OF
Pin: 334210-3895
Legal Description: HILLMANS LK WN GARDEN OF EDEN # 1 POR OF LOTS 56-57 & 58 & OF ADJ 2ND CL SH LDS DAF BEG AT INTX OF S LN OF LOT 58 WITH GOV MDR LN TH S 80-13-02 W 42.78 FT TH N 72-03-18 W 99.44 FT TH S
89-50-57 W 190.56 FT TO INNER HARBOR LN TH N 23-40-00 E ALG SD HARBOR LN 52.76 FT TH N 89-50-57 E 219.38 FT TH S 75-24-20 E 83.14 FT TH S 61-50-30 E 22.86 FT TH N 89-50-57 E TO ELY LN OF BLK A TH SLY ALG SD ELY
LN TO S LN OF LOT 58 TH S 89-50-57 W ALG SD S LN TO BEG TGW POR OF LOTS 57 & 58 & OF ADJ 2ND CL SH LDS DAF BEG AT INTX OF S LN OF LOT 58 WITH MDR LN TH S 80-13-02 W 42.78 FT TO TPOB TH N 72-03-18 W 99.44
FT TH S 89-50-57 W 190.56 FT TO INNER HARBOR LN TH S 23-40-00 W ALG SD HARBOR LN TAP S 80-13-02 W FR TPOB TH N 80-13-02 E TO TPOB
Plat Block: A Plat Lot: 56-57-58
LAT: 47.51909 LONG: -122.21122
1
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
S
E S T D 1 9 4 7 County: King CountyLocation: Lake WashingtonDocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
41'-6"
TO
NEIGHBOR'S
DOCK
126'-3"
TO
NEIGHBOR'S
DOCK
3'-10"
159'-10"
EXISTING CONDITIONS
SHEETA2.0 NWS-2021-XXX
11PAGE 2 OF
1
6&$/(
LAKE WASHINGTON
SUBJECT PROPERTY:
LEW RESIDENCE
3101 MOUNTAIN VIEW AVE N 98056
Parcel #: 334210-3895
LATERAL LINE
MORGAN LAURA S+JAMES C
3103 MOUNTAIN VIEW AVE N 98056
EXISTING PIER: NO WORK PROPOSED
10' SETBACK
**CLEAN UP LAKE AROUND PROJECT**
2+:0
2))6(7
BURR ROBERT H
3013 MOUNTAIN VIEW AVE N 98056
'(37+%(<21'
9,(:3257
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
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E S T D 1 9 4 7 County: King CountyLocation: Lake WashingtonLATERAL LIN
E
10' SETBACK
(;,67,1*&21&5(7(
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EXISTING PIER: NO WORK PROPOSED
EXISTING PIER: NO WORK PROPOSED
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DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
41'-6"
TO
NEIGHBOR'S
DOCK
126'-3"
TO
NEIGHBOR'S
DOCK
3'-10"
159'-10"
BOAT LIFT
(TO BE
INSTALLED)SHEETA3.0 NWS-2021-XXX
11PAGE 3 OF
PROPOSED CONDITIONS
1
**CLEAN UP LAKE AROUND PROJECT**
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
S
E S T D 1 9 4 7 County: King CountyLocation: Lake Washington
6&$/(
LAKE WASHINGTON
SUBJECT PROPERTY:
LEW RESIDENCE
3101 MOUNTAIN VIEW AVE N 98056
Parcel #: 334210-3895
LATERAL LINE
MORGAN LAURA S+JAMES C
3103 MOUNTAIN VIEW AVE N 98056
EXISTING PIER: NO WORK PROPOSED
10' SETBACK
2+:0
2))6(7
BURR ROBERT H
3013 MOUNTAIN VIEW AVE N 98056
'(37+%(<21'
9,(:3257
LATERAL LIN
E
10' SETBACK
(;,67,1*&21&5(7(
%8/.+($'725(0$,1
EXISTING PIER: NO WORK PROPOSED
EXISTING PIER: NO WORK PROPOSED
2+:0
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9(5,),(',1),(/'
(;,67,1*'2&. 12:25.
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DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
A'A'
3'-10"
159'-10"
BOAT LIFT
(TO BE
INSTALLED)SHEETA4.0 NWS-2021-XXX
11PAGE 4 OF
PIER DETAILS PROPOSED
PLAN VIEW
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
S
E S T D 1 9 4 7 County: King CountyLocation: Lake Washington6+25(/,1(
6(:(5/,1(
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DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
5'-1"4'-8"4'-6"4'-4"4'3'-10"3'-7"LAKE
WASHINGTON
OHWL 1'-6"
159'-10"
EXISTING MUD SUBSTRATE
5'-7"6'4'SHEETA5.0 NWS-2021-XXX
11PAGE 5 OF
PIER DETAILS PROPOSED
SECTION VIEW: A'-A'
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
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E S T D 1 9 4 7 County: King CountyLocation: Lake Washington6(:(5/,1(
9(5,),(',1),(/'
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DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
41'-6"
TO
NEIGHBOR'S
DOCK
126'-3"
TO
NEIGHBOR'S
DOCK
3'-10"
159'-10"
BOAT LIFT
(TO BE
INSTALLED)
OHWL
Flotation
Sediment
Containment
Curtain
Weighted Chain
EXISTING
LAKEBED/SOIL
DETAIL 1.1 DETAIL 1.2
SHEETA6.0 NWS-2021-XXX
11PAGE 6 OF
BMP INFORMATION
BMP NOTES:
DETAIL 1.1 & 1.2
1.2
SHEET
A6.0
1.1
SHEET
A6.0 TEMP. SEDIMENT CURTAIN
LAKE WASHINGTON
LATERAL LINE
A.Constant vigilance shall be kept for the presence of protected fish species during all aspects of the
proposed action, particularly during in-water activities such as vessel movement, deployment of anchors &
spuds, pile driving, dredging, and placement of gravels and other fill.
1.The project manager shall designate an appropriate number of competent observers to survey the project
site and adjacent areas for protected species, including the presence of fish as conditions allow.
2.Visual surveys shall be made prior to the start of work each day, and prior to resumption of work following
any break of more than an hour. Periodic additional visual surveys throughout the work day are strongly
recommended.
3.All in-water work shall be done during the in-water work window for the waterbody. Where there is a
difference between the USCOE and WDFW work windows, the overlap of the two shall apply.
4.All pile driving and extraction shall be postponed or halted when obvious aggregations or schooling of fish
are observed within 50 yards of that work, and shall only begin/resume after the animals have voluntarily
departed the area.
5.When piloting vessels, vessel operators shall operate at speeds and power settings to avoid grounding
vessels, and minimize substrate scour and mobilization of bottom sediments.
B.No contamination of the marine environment shall result from project-related activities.
1.Appropriate materials to contain and clean potential spills shall be stored and readily available at the work
site and/or aboard project-related vessels.
2.The project manager and heavy equipment operators shall perform daily pre-work equipment inspections
for cleanliness and leaks. All heavy equipment operations shall be postponed or halted should a leak be
detected, and shall not proceed until the leak is repaired and the equipment is cleaned.
3.To the greatest extent practicable, utilize biodegradable oils for equipment that would be operated in or
near water.
4.Fueling of land-based vehicles and equipment shall take place at least 50 feet away from the water,
preferably over an impervious surface. Fueling of vessels shall be done at approved fueling facilities.
5.Turbidity and siltation from project-related work shall be minimized and contained through the appropriate
use of erosion control practices, effective silt containment devices, and the curtailment of work during
adverse weather and tidal/flow conditions.
6.All wastes shall be collected and contained for proper disposal at approved upland disposal sites
appropriate for the material(s).
7.When removing piles and other similarly treated wood, containment booms must fully enclose the work
area. Wood debris, oils, and any other materials released into lake waters must be collected, removed,
and properly disposed of at approved disposal sites.
8.All in- and over-water wood cutting would be limited to the minimum required to remove the subject wood
component, and all cutting work should be enclosed within floating containment booms.
9.When removing piles, no actions shall be taken that would cause adhering sediments to return to lake
waters.
10.Above-water containment shall be installed around removed piles to prevent sediment laden waters from
returning to lake waters.
11.Construction staging (including stocking of materials, etc.) will occur on the supply barge.
12.All Exposed wood to be used on the project will be treated with a cheminite treatment.
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
S
E S T D 1 9 4 7 County: King CountyLocation: Lake WashingtonLATERAL LINE
10' SETBACK
10' OFFSET
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
10'
25'
41'-6"
TO
NEIGHBOR'S
DOCK
126'-3"
TO
NEIGHBOR'S
DOCK
159'-10"
CONSTRUCT MOUND OF EXCAVATED SOIL
TO SET ROOTBALL AT PROPER ELEVATION
FINISHED GRADE
SETTLE BACKFILL WITH
WATER IMMEDIATELY
AFTER PLANTING. ADD
BACKFILL AS NECESSARY
TO ACHIEVE LEVEL
SURFACE
DEPTH AS NECESSARY
TO ACHIEVE PROPER
HEIGHT OF TRUNK
FLARE
5' DIAMETER PLANTING PIT
REMOVE ALL WIRE, TWINE, AND BURLAP
FROM ROOTBALL. SCARIFY AND CUT
GIRDLING ROOTS.
SET CROWN OF ROOTBALL AT TOP OF
BACKFILL/FINISH GRADE. REMOVE EXCESS SOIL
FROM TOP OF ROOTBALL TO EXPOSE CROWN.
2" DIAMETER X 6' TALL WITH TAPERED
BOTTOM, PRESSURE TREATED
LODGEPOLE TREE STAKE
CENTER TREE IN PIT AND SET PLUMB AND
STRAIGHT, ADJUST TREE BY MOVING
ROOTBALL WHILE PROTECTING THE CROWN
FROM BREAKING. DO NOT ADJUST TREE BY
MOVING ONLY THE TRUNK
1/3 THE TREE HEIGHT
30"
NOTES:
1.LOWEST BRANCH HEIGHT SHALL BE 6 FEET ABOVE
ROOT CROWN.
2.AVOID DAMAGE TO ROOTBALL - STAKES SHALL NOT
PENETRATE ROOTBALL.
3.GUY WIRES WILL NOT BE ACCEPTED
4.PROVIDE STAKING FOR WINDY LOCATION. FORWARD
STAKE SHALL BE WINDWARD OF TREE.
5.TREES SHALL BE PLANTED A MINIMUM OF 10 FEET ON
CENTER
1 INCH WIDTH BLACK WEBBING FOR
TENSIONING TREE. SECURE TO POST USING 1
INCH, 8 GAUGE, GALVANIZED DOUBLE WIRE
STAPLES, TWO PER WEB STRAP
SHREDDED WOOD MULCH, 3" MIN. COMPACTED
DEPTH. PULL MULCH 3" AWAY FROM TRUNK
3" HIGH X 10' WIDE MULCH BERM, COMPACTED
FIRMLY
PLANTING PIT BACKFILL WITH A MIX OF 3:1
TOPSOIL TO COMPOSTPREVAILINGWINDROOTBALL
3" BERM
CENTER OF TREE STEM OR
CLUSTER OF TREE STEMS
2" DIAMETER POLE
3"
MULCH LAYER, PULL MULCH
AWAY FROM STEMS
PLANTING PIT BACKFILL WITH A MIX OF 3:1
TOPSOIL TO COMPOST
TREE PLANTING DETAILS (NTS)
SHRUB AND GROUNDCOVER
PLANTING DETAILS (NTS)
3"
SEE PLANTING PLAN
FOR SPACINGNOTES:
1.INSTALLATION SHALL INCLUDE LOOSENING SIDES AND
BOTTOM OF PLANTING PIT AND REMOVE DEBRIS
3.THE PIT SHALL BE SOAKED WITH WATER PRIOR TO,
AND SUBSEQUENT TO, INSTALLATION
4.PRIOR TO INSTALLATION, LOOSENING OF PLAT
ROOTBALLS SHALL OCCUR
5.SHRUBS SHALL BE PLANTED A MINIMUM OF 5 FEET ON
CENTER.SHEETA7.0 NWS-2021-XXX
11PAGE 7 OF
MITIGATION PLAN
Notes:
1.Shrubs are show, and shall be planted, at least five feet on center. Trees are show, and shall be planted, at least ten feet to
center.
2.The property owner will implement and abide by the shoreline planting plan. The plants shall be installed before or
concurrent with the work authorized by this permit. A report, as-built drawing and photographs demonstrating the plants
have been installed or a report on the status of project construction will be submitted to the U.S. Army Corps of Engineers,
Seattle District, Regulatory Branch, within 12 months from the date of permit issuance. This reporting requirement may be
met by completing and submitting a U.S. Army Corps of Engineers approved Report for Mitigation Work Completion form.
3.The property owner will maintain and monitor the survival of installed shoreline plantings for five years after the U.S. Army
Corps of Engineers accepts the as-built report. Installed plants shall achieve 100% survival during monitoring Years 1 and 2.
Installed plants shall achieve at least 80% survival during monitoring Years 3, 4 and 5. Percent survival is based on the total
number of plants installed in accordance with the approved riparian planting plan. Individual plants that die will be replaced
with native riparian species in order to meet the survival performance standards.
4.The property owner will provide annual monitoring reports for five years (Monitoring Years 1-5). Each annual monitoring
report will include written and photographic documentation on plant mortality and replanting efforts and will document
whether the performance standards are being met. Photos will be taken from established points and used repeatedly for each
monitoring year. In addition to photos at designated points, photo documentation will include a panoramic view of the entire
planting area. Submitted photos will be formatted on standard 8 1/2 x 11" paper, dated with the date the photo was taken,
and clearly labeled with the direction from which the photo was taken. The photo location points will be identified on an
appropriate drawing. Annual shoreline planting monitoring reports will be submitted to the U.S. Army Corps of Engineers,
Seattle District, Regulatory Branch, by November 31 of each monitoring year. This reporting requirement may be met by
completing and submitting a U.S. Army Corps of Engineers approved Mitigation Planting Monitoring Report form.
Mitigation from LUA22-000126
to be used.
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
S
E S T D 1 9 4 7 County: King CountyLocation: Lake WashingtonSUBJECT PROPERTY:
LEW RESIDENCE
3101 MOUNTAIN VIEW AVE N 98056
Parcel #: 334210-3895
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
159'-10"SHEETA8.0 NWS-2021-XXX
11PAGE 8 OF
EXISTING PLANT PLAN
NO EXISTING PLANTS
PLAN VIEW EXISTING PLANTS TABLE
Scope of Work: Installing (1) boat lift.Created: 07-05-22Adjacent Owners:BURR ROBERT H3013 MOUNTAIN VIEW AVE N 98056MORGAN LAURA S+JAMES C3103 MOUNTAIN VIEW AVE N 98056Datum: CORPS OF ENGINEERS 1919SE Quarter Of Section 31, Township 24, Range 05Applicant: Lew Residence3101 Mountain View Ave NRenton, WA 98056Last Updated: 7/5/2022 1:58 PM ZionSeaborn Pile Driving1080 W Ewing StSeattle, WA 98119
Office: 206-236-1700 ext. 3www.seabornpiledriving.com
B U I L T BY
B O R NAE
S
E S T D 1 9 4 7 County: King CountyLocation: Lake WashingtonDocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Appendix B:
Figures
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
9,028 752
City of Renton Print map Template
This map is a user generated static output from an Internet mapping site and
is for reference only. Data layers that appear on this map may or may not be
accurate, current, or otherwise reliable.
None
1/28/2022
Legend
5120256
THIS MAP IS NOT TO BE USED FOR NAVIGATION
Feet
Notes
512
WGS_1984_Web_Mercator_Auxiliary_Sphere
Information Technology - GIS
RentonMapSupport@Rentonwa.gov
City and County Labels
Parcels
City and County Boundary
<all other values>
Renton
Environment Designations
Natural
Shoreline High Intensity
Shoreline Isolated High Intensity
Shoreline Residential
Urban Conservancy
Jurisdictions
Streams (Classified)
<all other values>
Type S Shoreline
Type F Fish
Type Np Non-Fish
Type Ns Non-Fish Seasonal
Unclassified
Not Visited
Wetlands
Streets
Parks
Waterbodies
Site location
Figure 1 -
Renton COR Map
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Sections that Contain Natural Heritage Features 33
Data Current as of July 14, 2020
List of surveyed land sections in Washington identified by the Natural Heritage Program as reported to contain
Natural Heritage Features. Contact the Washington Natural Heritage Program at
natural_heritage_program@dnr.wa.gov for more detailed information on locations and occurrences.
Town. Range Sec. Town. Range Sec. Town. Range Sec. Town. Range Sec.
Washington Natural Heritage Program, P O Box 47016, Olympia, WA 98504-7016
T24N R04E S24
T24N R04W PB38
T24N R04W PB40
T24N R04W PB41
T24N R04W PB42
T24N R04W PB48
T24N R04W PB50
T24N R04W PB51
T24N R04W S18
T24N R04W S19
T24N R04W S20
T24N R04W S29
T24N R04W S30
T24N R04W S31
T24N R05W PB38
T24N R05W S13
T24N R05W S23
T24N R05W S24
T24N R05W S25
T24N R05W S26
T24N R05W S35
T24N R05W S36
T24N R06W S10
T24N R06W S11
T24N R06W S12
T24N R06W S13
T24N R06W S14
T24N R06W S15
T24N R06W S16
T24N R06W S17
T24N R06W S18
T24N R06W S19
T24N R06W S2
T24N R06W S20
T24N R06W S21
T24N R06W S22
T24N R06W S23
T24N R06W S24
T24N R06W S25
T24N R06W S26
T24N R06W S27
T24N R06W S28
T24N R06W S29
T24N R06W S3
T24N R06W S30
T24N R06W S31
T24N R06W S32
T24N R06W S33
T24N R06W S34
T24N R06W S35
T24N R06W S36
T24N R06W S4
T24N R06W S5
T24N R06W S6
T24N R06W S7
T24N R06W S8
T24N R06W S9
T24N R07W S12
T24N R07W S13
T24N R07W S24
T24N R07W S25
T24N R08E S1
T24N R08E S11
T24N R08E S13
T24N R08E S2
T24N R08E S24
T24N R08E S3
T24N R08E S35
T24N R08E S36
T24N R08E S4
T24N R08W PB38
T24N R09E S16
T24N R09E S17
T24N R09E S25
T24N R09E S27
T24N R09E S31
T24N R09E S32
T24N R09E S34
T24N R09E S35
T24N R09E S36
T24N R09E S8
T24N R09W S17
T24N R10E S21
T24N R10E S28
T24N R10E S29
T24N R10E S30
T24N R10E S31
T24N R10W PB44
T24N R10W PB49
T24N R10W PB50
T24N R10W PB51
T24N R10W PB52
T24N R10W S11
T24N R10W S14
T24N R10W S20
T24N R10W S23
T24N R10W S28
T24N R11E S14
T24N R11E S26
T24N R11E S32
T24N R11E S33
T24N R11W S10
T24N R11W S17
T24N R11W S18
T24N R11W S2
T24N R11W S3
T24N R11W S4
T24N R11W S5
T24N R11W S6
T24N R11W S7
T24N R12W S13
T24N R12W S32
T24N R12W S33
T24N R13W S10
T24N R13W S11
T24N R13W S14
T24N R13W S15
T24N R13W S16
T24N R13W S2
T24N R13W S22
T24N R13W S23
T24N R13W S26
T24N R13W S27
T24N R13W S3
T24N R13W S4
T24N R13W S9
T24N R16E S13
T24N R16E S21
T24N R16E S22
T24N R16E S26
T24N R16E S27
T24N R16E S33
T24N R17E S10
T24N R17E S19
T24N R17E S2
T24N R17E S20
T24N R17E S24
T24N R17E S27
T24N R17E S29
T24N R17E S3
T24N R17E S30
T24N R17E S33
T24N R17E S35
T24N R17E S4
T24N R17E S9
T24N R18E S16
T24N R18E S17
T24N R18E S18
T24N R18E S19
T24N R18E S20
T24N R18E S21
T24N R18E S25
T24N R18E S27
T24N R18E S7
T24N R18E S8
T24N R18E S9
T24N R19E S1
T24N R19E S10
T24N R19E S11
T24N R19E S2
T24N R19E S3
T24N R20E S10
T24N R20E S11
T24N R20E S14
2
31
Figure 3 - NH
Features
No Natural Heritage Features listed in
T24N R05E S32
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Sit
e
Lo
cati
on
Figure 3 - PHS Data
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
City of Renton, Bureau of Land Management, Esri Canada, Esri, HERE,
Garmin, INCREMENT P, USGS, METI/NASA, EPA, USDA, WDFW
All SalmonScape Species
January 28, 2022
0 0.2 0.40.1 mi
0 0.3 0.60.15 km
1:18,056
Figure 4 - Salmonscape Map
Site Location
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
Appendix C:
Site Photographs
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7
DocuSign Envelope ID: 90C75C65-AD2D-4872-A0C3-281417E44DC7