HomeMy WebLinkAbout19-007 - Harnish Group - "Green the Green" Right of Entry for Construction and Maintenance19-007
Council Approval N/A
RICHT OF EINTRY
AND CONSTRUCTION AM) MAINTENANCE AUTHORIZATIOIN ACREEMENT
IIS RIG!. IT OF ENTRY AND CONSTRUCTION AND MAINTENANCE
A 1.1f1-10RIZA'llON AGREEMENT ("Agreement") is entered into this ,.,11..3_1_111 day of
20/d_ ("Effective Date") by and between Harnish Group Inc., hereinafter
referred to as the "Grantor (s)" and TtJKWILA, a non -charter optional municipal code city, herein after
referred to as the "Grantee".
WHEREAS the Grantor owns properties located at 17025 West Valley Highway in Tukwila,
Washington, which are also known as King County parcel numbers 2523049046 and 2523049047
(together,. the "Premises-), and
WHEREAS the (ity has funded and will complete a salmon habitat .restoration project titled,
Green the Green, ("Project") along the shoreline of the Premises that will construct, monitor, and maintain
iniprovements including invasive species removal and tree and shrub planting as well a.s other
improvements and amenities in accordance with the contract plans, specifications and standards of the
'fikwila. Municipal Code; and
WHEREAS the primary function of the project is to plant and establish native trees and shrubs
that will provide shade, and thus maintain cool water .temperatures critical to salmon survival and.
reproduction.
WHEREAS the City (Grantee) anticipates said project will begin on the .Effective Date and
be completed by July 31, 2028, "Fhis time period allows fbr multiple seasons of maintenance
associated with plant establishment.
NOW, THEREFORE, i . consideration of the mutual promises set forth hercin,
as follows:
:s agreed
1. The Grantor shall grant the Grantee, and Grantee's officers, officials, representatives,
em.ployees, a.gents, contractors, subcontractors, and utilities (collectively, "Agents") a.. limited, non-
ex.clusive right and authorization to access only the following portions of the Premises in order to perform
the work described and shown in Attachment A subject to the terms and conditions herein (the "Work"):
(I) the area west of .the boundary line designated in the map shown in Attachment B and (2) the ingress
and egress .route designated on Attachment C.% in order. Attachments A. B, and C are incorporated herein
bv this reference.
2. Grantor represents and warrants that it is the owner or owner's authorized agent of the Premises.
3. Grantee shall have the right. of ingress and egress to conduct .the Work .utilizing the route
designated on Attachment (..7, and shall only ingress and egress the Premises in a reasonable manner to
conduct the Work via that route. Said Work shall be limited to the hours 'between 8:00 a.m. and 6:00
p.m. and shall be limited in scope and duration as is reasonably necessary for the performance of the Work.
4. Within. 14 days of executing this Agreement, Grantcc shall provide Grantor a written estimate
of the schedule of .the dates and .times during the Term (defined in Paragraph I I) on kvhich (...irantee or its
Agents plan to enter the Premises to conduct the 'Work ("Work. Schedule"). For the duration of the -rem
or unless otherwise agreed by the Parties. Grantee shall provide Grantor at least two business daysnotice
before any change to the Work Schedule. For the duration of ally Renewal Term (defined in Pam tgraph
'-"). /yr' /;;;16,..S,
1) or unless otherwise agreed by the Parties, Grantee, shall give Grantor at least two business days*
advance notice of any planned entry to the Premises to conduct the Work pursuant to this Agreement.
5. Grantee and its Agents shall enter the Premises to conduct the Work pursuant to this Agreement
in no more than tw..) .vehicles per day
6. Grantee shall use offsite restroom facilities or provide restroom -facilities for itsel.f and its Agents
on the portion of the Premises designated in Attachment B.
7. 7lhe Work may cause some disruption to the Premises. The Grantee and its Agents shall
take reasonable precautions to avoid damage to and seek to minimize disruption of the Premises and shall
restore the Premises to its existing condition, as nearly as possible, after the relevant portion of the Work.
that caused the damage or disruption is complete.
8. All Work shall be completed at Grantee's sole cost and expense, including but not limited to
the cost .for the supply of potable water fbr the Work,
9. Grantee shall require its Agents .to waive all rights to assert any lien agalnst thc Premises
arising out of or in connection to the Work.
10. Grantee and its Agents shall at all times while on the Premises comply with and shall
conduct the Work in accordance with all applicable federal, state, and local permits, laws, and
regulations, including but not limited to employment, environmental, health, and safety laws. Grantee
shall be solely responsible for the health and safety of its Agents while on the Premises.
I. The term of this Agreement ("Term.") shall commence on the Effective Date and shall
remain in effect until the earlier of (1) revocation of this Agreement by Grantor in its sole reasonable
discretion. In order to revoke this Agreement. Grantor must give Written notice to Grantee in
accordance with Paragraph 15 ninety (90) calendar days before revocation shall take effect, or (2) ten
(10) years from the Effective Date. The duration of this A.greeinent may be extended by the written
agreement between. the Grantee and Grantor.
12. "Ifo the extent authorized by law, Grantee shall indemnify, defend and hold Grantor and its
directors, officers, employees, agents, successors, and assigns, harmless :from and against any claims,
defenses, losses, costs, legal or administrative proceedings, actions, liabilities, liens, injuries, demands,
suits, fines, penalties, fees, and expenses, including, but not limited to attorneys and experts fees, costs of
investigation, costs of remediation, costs of restoration, costs of erosion control, costs of hank
stabilization, costs of .maintenance, settlements, and judgments (collectively, "(laims—) directly or
indirectly arising out of or in connection with acts or omissions of Grantee or its Agents arising out of or
in connection with (1) the Work and (2) injury to or death of:any persons (including but not limited to
(irantee's Agents) and damage to or destruction of the :Premises, except onl\ to the extent such Claims
are caused by Grantor's negligence, The obligations of this paragraph shall be continuing and shall
survive the termination of this Agreement.
71.1.is Agreement is the entire a..greement of the parties and supersedes any prior agreement
with respect: to the subject matter hereof. This Agreement may not be modified or assigned without the
written consent of the parties. If a. court of competent jurisdiction deems any provision of this
Agreement invalid or Linenforceable, the remaining provisions shall remain in full .force and effect.
14. This Agreement. nay be executed in identical counterix
15. Any notices shall be delivered in person, mailed by First Class Mail and addressed to the
Grantor or Grantee at the following addresses, and via electronic mail to sa,me,
If to Grantor:
Harnish Group Inc.
17035 West Valley High\yay
Tukwila, WA 98188
Attn: Randy Deans, Facilities & Environnicntal Supervis
Phone: 425.251.5876
Email: Id,,,,lri,,,J1h,1,1,whift:L
Flaniish Group Inc.
17035 West Valley i2,11 vay
WA 98188
Attn; Jagi Nichols, Legal Department
Phone: 425.251.9823
Eniail: 1m,
11 to Grantee: City of Tukwila
6300 Southcenter Blvd. Suite
Attn: Mike Perfetti
Phone: 2060433.7192
16. 'This Agreement shall run With the land for the Term of the Agreement and will be recorded.
against: the Property 'by the City.
IN WITNESS WEIER.EOF, the par es have set their hands thc date and year .first above
written
GRANT( - 11ARNISH GROUP INC
&7
': John W. Harnish, President & COO By: IA
'17035 West Valley Highway 6200 Southcer6r Boulevard
Tukwila, WA 98188 Tukwila, WA . ,8 188
GRANTEE —CI oF TUKWILA
STATE OF .WASHINCITON
SS.
COUNTY OF KING
hereby certify that I know or have satisfactory evidence that John W. Harnish , is the person who
appeared before me, and said person acknowledged that he/she signed this instrument, on oath stated that
he/se was authorized to execute the instrutrient and acknowledged it to be his/her free and voluntary, act
for the uses and purposes mentioned in this instrument.
Dated: December 28, 2018
„./,
Signature: „,--1. e4".17„.....%:/"....
L.../
Notary Public in and for the State of Washington
Notary (print name): Jagoda Nichols
Residing at: King County, Washington
STATE OF WASHINGTON
SS.
COUNTY OF KING
'
I hereby certify that I know or have satisfa.ctory evidence that d , , is the person W h o
appeared before me, and said person acknowledged that he/ signed this instrutn.ent, on oath stated that
he/Are was authorized to execute the instrument and acknowledged it to be his/41er free and voluntary, act
for the uses and purposes mentioned in this instrument.
Dated: ,„,,„„ 0-
. .
Signature
C, t
Notary Public in and for the State of Washington
Notary (print name): t, A n1 LkL.
-
Residing at: '—"1"--A
3 A
Attachment A
Description of Work
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Tukwila "Green the Green" Riparian Enhance ent Project Plan
�
arnish Group/achine
Section l - Project Plan
° Location Information
~ Contact Information
• Project Overview
p Roles &Respondbi|ities
• Timeline
° Zone Descriptions
• Site, Preparation
o Himalayan Blackberry
o JapaneseKnotvveed
o Butterfly Bush
o ScotchBroom
o Tansy Ragwort
o Reed Canary Crass
o English Ivy
° Mulching
• Planting
o Plant K8a(eha|s@Sources
o Plant Handling
o Plant Installation
" BarerootP|ants
° Stakes
o Plant Spacing
* Watering
* Maintenance& Monitoring
n Monitoring
o Maintenance
o Replanting
Section 2-Location Maps
• Geographic Location Map
* Project Area Map
° Project Zones Map
Section 3-Planting Plan 86CostEstimate
� Option 2-Planting Plan Spreadsheet
Sectiox� 4-Appendices
Section 1 ''rojec an
Location information:
NC Machinery
l/035VVV^UeyHwy
Tukwila, VVA98l88
Office: 8O0`5074735
�
�
Contact information:
John"Randy~Deans
Facilities &Envimnmenm|Supervisor
NC Machinery
Office: 425-251'5876
Cell: 205'437-9080
�r~ ,ect **, ve���~ev,,,
The Harnish Group/NC Machinery project plan was prepared by the King Conservation
District on behalf ofthe City ofTukwila to support the Gty'scoUaborodVn with Hu,nish
Group/NC Machinery on installation of [)uvvarnish River riparian buffer enhancement
project. The prject|oca\ionistheHarnishGrouo/N[K4ochineryparce|inTukvvi|a
where the Duwamish River runs adjacent to the west side of the Harnish Group/NC
Machinery parcel.
The primary riparian resource concerns identified at this location are a lack of diverse
native riparian vegetation and infestations of several different invasive species,
including large infestations of Himalayan blackberry (RUbus armeniacus), and some
infestations of Butterfly bush (Buddleia dovidii) and invasive knotweed (Polygonum
The agreed upon goals ofthe project p|anaretonernoveandVzntro|theinvadve
species and enhance the riparian vegetation with native trees and shrubs. These
resource improvement actions will have several long term ecological benefits,
including improved canopy for shade over the river, improved water quality', reduced
soil erosion, and improved wildlife habitat for both terrestrial and aquatic organisms'.
Q"'oUes;�*�����W���K��~D�~U^�`���
The HarnishGroup/NC Machinery project p/anouWnesrnanagernen\activihesaUgned
with the Tukwila Green the Green Initiative that will be implemented under the
direction o/the City ofTukwila, The City inits capacity asnnanagero[the project will
select a contractor to install the project, issue a contract to the selected contractor,
and oversee contractor activities toensure project success.
I The Washington Department of Ecology reports DUwamish River water quality issues
including temperature, pH, PCBs, 4'4'-DOD'4'4''DOT4'4''DDF,and A|ph+BHC
' The Washington Department of Fish and Wildlife reports DUwamish River salmon species
including Fall Chinook, Pink, Coho'Winter & Summer Stee|head'Fall Chum, 8uU'and Sockeye.
King Conservation District in its role of project planner was responsible for
communications with the landowner throughout the project selection and planning
phases. The Harnish Group/NC Machinery will notify the [ityofTukvvi|a iFthey are
requesting additional changes tothe plan developed bythe King Conservation
District. K[Dwill share the project p/anandaUapp|icob|edocurnentsvviththese|ected
contractor,
Ti efine US�A|t�rn�Uv� T�r0�Un� be|Ovv
0"re'-fo"Howing project implementation time line assumes selection of a con trac't0._',t&
begin site prOp" ti,on during late spring and summer of 2018. T ' h is
recommended to ensure"�,,"�"i"ectt.)/",e" site preparation prier-to"p" 1'�r ting. Spraying
herbicide on the project site in eariy"a' will meet Best Practices criteria
for chernical control of inya,,sJ,,,,e-s'0ecies prior to faII"6'nd-,,,v,iqter planting on the site, An
alternate time rovided in the Appendix should a contrac'to'f to
applications of herbicide by n-lid-September 2018,
�
Winter— Contracts signed bylandowner and City o[Tukwila
~ `�oring—Se|ect contractor and secure all funding for project i |ln
* SuhamerUune/—First herbicide treatment nfinvasive species oras'ent
�
� I� Mow invasive species install straw
wattles
� Summer (Julrnu/cn
� Septennher—Retregrowth ofinvasive specieswith herbicide
IV plant stakes in zone I Pk"/�
October— Install nat' c�,
2819
* Jo / February Install b2-5
• June—Monikzrsitefo l replanting isneeded
• Sumnne/—VVateras needed",""
w }u�/�uguSt—Herbida\rnentw[regr invasive plant species
2030'2033 �
�
* Januory /F —Rep|untbmnenootp|onisas needed
* Summer —"'10onitorsites for invasive species regrowth a tvvi\h herbicide
�
as needed
~
Thin tree species topromote optimal tree growth, including
�^ height ratios and overall tree vigor,
ideal tree cr.,Qvvnto
,4-1ternat-ve lF^��eU~ne
2010
* Summer nc)-Contracts signed bylandowner and City pfTukwila
* Surnrncr(Junc/]uly) - Select contractor and secure all funding for project installation
* Surnrner(July/August)-Firsitreatrnentofinvasivespeciespresent
* JunnrnerUuly/Au8usU - Install straw wattles to slow erosion and reduce
* Sum met, (JulylA uyust) - Once herbicide treatr-nent has killed plants, mow or cut dead
canes ofinvasive species and leave onsite,
* Jeptonnhe/-Sprayincornpustandrnu|ch
° September - Retreat any regrowth ofinvasive species with herbicide
* October - Install native plant stakes in zone l &2
* /unuory/February - Install bane/ooiplant species inzones 2-5
* June - Monitor site for survival, determine ifany replanting isneeded
w Iunnnnc/-VVaterosnecded
* July/August-Herbicide treatment Vfregrown invasive plant species
2020--2-023
� /onuory/ February- Replant barernct plants as needed
°
Zone*escr~�t^ons
ZONE 1 (5,600 ft2):The zone has a northwestern aspect and steeply slopes down to the
river. This area is infested with Himalayan blackberry and small patches of knotweed.
This zone can be characterized as having wet/moist soils with full sun. Along the
northern part of this section, there is a well -established patch of Red osier dogwood
(approx 200'of shoreline). Plan to stake this zone with dogwood and willows, 3 rows of
stakes, 2 feet on center. Do not stake in areas that already have established native
vegetation.
ZONE 2(l8,000 ft2)/This zone iscategorized bvinvasive Himalayan blackberry. There
has been no treatment of the invasive species in this zone.There are some small
infestations of invasive Knotweed in areas along the western portion of this zone, near
the river. This zone will be planted with dense trees and shrubs to shade out the
blackberry and improve the survival of the native plants. The soil is mixture ofmoist
towe|}-drained.The area isinfull sun, with some steep slopes.
ZONE 3(l7,576ftl);This zone ischaracterized bydry/rocky soils. The landowner
mowed the blackberry in summer 2017. There is some regrowth of blackberry, tansy
ragwort, and reed canary grass present. This zone has well -drained, rocky soils. The
goal is to establish conifer trees spaced lOFeet apart in this zone. This spacing will
allow for quick shade establishment and a reduction in the amount of invasive species
present, |n3 9years, the trees will need tobethinned toallow for long-term success.
By just installing trees' sighi|ines will remain clear to discourage illegal camping or
trespassing.
ZONE 4 (2,500 ftl): This zone is currently acting as living fence and dense hedgerow of
mixed invasive and native plants, The landowner is concerned about access from the
railroad along the fence line, Native plants will be installed in a dense hedgerow and
allowed to grow tall enough to act as a fence before the invasive plants are removed
from this zone. This zone is located in full sun, and the soil is moist to dry. 60' length
ZONE 5 (6,600 W):This zone islocated onthe highest part ofthe slope, near the
parking lot, There basandbag wall and rocky berm adjacent tothe parking lot. This
zone will be left unplanted for access, Maintenance will include some herbicide
treatment of blackberry, scotch broom and butterfly bush, with continued mowing,
Site Preparation
Site preparation isavery important factor inthe success Vfany planting project. This
step provides a competition -free substrate, which allows native plants iohccornc
established and shade out invasive species. The goal is to eradicate any unwanted or
non-native vegetation that may inhibit the growth of the more desirable species,
including species that already exist onthe site o,are going to he planted inthe future.
Page
There are a wide variety of methods that can be implemented to achieve favorable
conditions for a planting site, The method YOU choose will depend on the size of the
area to be planted, the existing conclitions, and the types of plants to be planted. Site
preparation methods can include manual, mechanical, and/or chemical removal.
Generally, site preparation should be started during the spring or summer months and
completed byearly fall. Follow site preparation recommendations for each invasive
species found \nthe different project zones,
Rennenmber-thepeuticide Label isthe Law. All federal, state, and local regulations
regarding use of pesticides, disposal of pesticides, and disposal of pesticide containers
will be followed.
Herbicide can be used when there is no concern for damage to Surrounding areas or
desirable species. Certain herbicides are approved for aquatic area use.
Recommendations for the use of chemicals require a license and are Subject toVV5DA
(Washington State Department of Agriculture) and WSDNR (Washington State
Department o[Natural Resources) regulations, Herbicides should only be applied in
accordance with product label and consistent with all federal, state, and local laws.
� Himalayan Blackberry / \ —Zones 1 _4
o 'Treatment of Himalayan blackberry will be most effective with herbicide
application, followed up by mowing dead canes, and finally retreating any
regrowth before planting.
� HERBICIDE: Use anaquatic approved herbicide containing
g|yphosate{otreat blackberry. Initial herbicide treatment should
occur \nthe early summer (]une).Secondary treatment ofblackberry
with herbicide should occur inSeptember, Apply based nn
application rate onlabel ofherbicide. All herbicide applications
need twfollow label instructions aswell as local amm/s&mte
regulations.
� MOWING: After treating blackberry with herbicide and waiting a
few weeks, mow down dead blackberry canes aslow aspossible and
leave onsite k/protect soil. Options for mowing include using a
brush cutter, brush hog ormanually cutting. Mowing orcutting
should take place inthe summer after the herbicide has killed the
p{ants.Takecare tokeep blackberry canes Out ofthe river osmuch
aspossible. Cut canes sothey fall onto the project site, not inthe
water. Rope Lip asneeded when mowing onsteep slopes.
� PRECAUTIONS: Always follow directions when applying herbicide.
Take extreme care tVavoid spray drift and off target spray impacting
existing native vegetation. Donot spray inthe rain orwhen rain is
soon expected, asper application instructions. There are some very
Page
steep slopes directly adjacent tVthe shore. Use personal floatation
devices and ropes/harnesses as needed to stay safe.
o See the King County Blockberry8MP factsheet in the Appendix for more
information.
� Invasive Kn(Polygonum spp.)—Zones 1 & 2
o Treatment of invasive knotvveed will be most effective with herbicide
application, followed up with knocking down dead canes, and finally
retreating regrowth Vfknotweed before planting.
° HERBICIDE: Use anaquatic approved herbicide !Vtreat knotwecd.
Initial herbicide treatment should occur in the late sunnrner
(September) before the plants begin to senesce. Follow all
application rate instructions onherbicide label, All herbicide
applications need to follow label instructions mswell ms local and
state regulations.
� KNOCK DOWN CANES: After treating knotveedwith herbicide,
stomp down all canes after they have fully died beck. Leave dead
plant material onthe site tokeep the soil covered. Moving or
rnovvingknotvveedcan cause it\ospread tpother sites downstream.
Oonot mow any Knotvveedwithin the project; additionaUy,donVt
remove any part ofthis plant from the project anaa. |fyou do
remove that plant from the project area,donotputinanycmnnpost
oryard waste bins. Any parts removed from the project should be
bagged and placed \nthe garbage.
� PRECAUTIONS: Always follow directions when applying herbicide.
Take extreme care toavoid spray drift and off target spray impacting
existing native vegetation. Do not spray in the rain or when rain is
soon expected, asper application instructions.
n Seethe Kinx/[munty/000neseKnntweed 8MPfactsheet/nthe Appendix for
more informotion.
= Butterfl«Bush—Zones 4 & 5
o Butterfly bush islocated along the top portion of the project inzVnes4&I
Chemical control methods will be the most effective in killing the butterfly
bushes.
� HERBICIDE: Cut the trunk off atthe base and immediately apply
g|yphosateortric|opyronto the freshly cut surface. Follow King
County Noxious Weed RK4Psand all applicable laws/regulations
regarding herbicide use.
� MANUAL: Hand -pull any seedlings and cut down larger bushes
before applying herbicide. Donot leave any branches onthe
ground, Donot place seed heads into compost bins. Dispose ofseed
heads \nthe trash.
" PRECAUTIONS: Follow all applicable laws and regulations regarding
herbicide use onthe site.
� Seethe King County Butterfly bush BMPfactsheet in the Appendix for more
information,
~ Scotch Broo,,,,,,, �-Zone 5
o Scotch broom islocated along the berm \nsite 5.near the parking lot and
sand bags. Carefully remove Scotch broom plants manually.
� MANUAL: Hand pull small scotch broom plants, Use oweed wrench
for larger plants. Cutting larger plants aLthe stem has been proven
effective atsuppressing some regrowth. Cutting the plant may bca
good option for some o[the Scotch broom located inside the
sandbag retaining wall along the top ofthe property.
See the King County Scotch Broom 8MPfoctsheet/nthe Appendix for more
information.
° Tansy Ragwort _Zones 2_4
u Tansy ragwort ismseveral small patches throughout the project site. Hand
puU all tansy ragwort plants before mowing and spraying. Mowing the
plants may cause the infestation tospread and grown.
� MANUAL: Pull the plants before they flower inMay - June. Use
gloves and protective clothing when pulling Tansy ragwort. BeSure
to remove roots when pulling the plants. Use shovel to effectively
dig up all roots for plants.
� PRECAUTIONS: Tansy ragwort istoxic sowear proper personal
protective equipment when hand pulling,
See the King County Tansy 8aow/o/t8MPfoctzheet/nthe Appendix for rnnre
information.
° Reed Canary Grass _Zones 2-4
o Reed canary grass islocated throughout the project site insmall patches.
Mowing the grasses during the maintenance season around any ofthe
plants will bethe most effective way tocontrol the reed canary grass and
keep itfrom smothering the plants.
Page
IN MECHANICAL: Mowing isthe best way V)control reed canary grass
and keep itfrom shading out native plants. Mow during the summer
months toknock )tdown during the height ofgrowing season. At
rninirnurn, rnovv around the plants that have blue tubes.
o See the King County Reed Canary Gross BMP factsheet in the Appendix for more
information.
° English Ivy helix) — Zone 5
o Treatment of English ivy will be most effective with herbicide application,
followed up with mowing dead canes, and finally retreating regrowth of ivy
before planting. Small patches ofivy can bemanually removed and
composted or) site.
� HERBICIDE: Use anaquatic approved herbicide containing
g|yphosate to treat English Ivy. Initial herbicide treatment should
occur mthe early summer (June). Secondary treatment ofivy with
herbicide should occur in September. Follow all application rate
instructions onherbicide label. ^4llherb/cideapplications needtm
follow label instructions as well as local and state regulations.
� MOWING: After treating English ivy with herbicide, mow all ivy with
asclose tothe ground aspossible. Options for mowing include
using a brush cutter, brush hog ormanually cutting. Mowing or
cutting should take place inthe summer/fall after the herbicide has
killed the plant.
MANUAL REMOVAL: Small patches nfEnglish ivy Vrany ivy
growing uptrees can bemanually removed. Pull asmuch nfthe root
system up as possible to reduce regrowth of the plant. Do not pull
ivy from the tops oftrees! Cut the ivy that isgrowing ontrees
approximately 4-S'fiornthe ground and remove all ivy frornthe
trunk and surrounding area. This will kill the ivy growing inthe trees
without damaging the tree or posing a hazard tothe crew.
PRECAUTIONS: Always follow directions when applying herbicide.
Take extreme care toavoid spray drift and off target spray impacting
existing native vegetation. Do not spray inthe rain or when rain is
soon expected, asper application instructions, Donot pull ivy from
the top branches of the tree!
o Seethe King County English Ivy 6MPfartshcctin the Appendix for more
information.
��eecl Control," uUch
Install a 4-inch to 6-inch layer ofmulch in 1.5'foct diameter circles around each plant
installed above the ordinary high-water |ine. Mulch helps newly installed plants
become established in their new environment by reducing competition from weeds
and other undesirable vegetation in and near the root zone of installed plants; by
providing an insulating layer o[material that helps retain soil moisture during the
dryer summer months; and by contributing organic material to the soil horizons.
�9Ua n t^n,*i
Planting native trees and shrubs in areas formerly infested with invasive species is the
best |nng'kerrn management technique. Native trees and shrubs increase competition
and shading, reducing opportunities for blackberry, knokweed, ivy, and other invasive
species to re -colonize. Banaront plants, and live stakes are recommended for this
project depending on the planting zone. Reference planting plan and schematic
(Appendix) for species selected and quantities for each zone.
Planting plan recommendations are based on plant sun exposure and soil moisture
preferences, with the primary goal focused on establishing shade. A silvicultural
forestry approach to quick tree establishment includes a reduced spacing between
trees (as tight as 8' on center distance between trees) to increase competition and
encourage growth. This method requires thinning after 7-10 years to maintain tree
health and preventing overcrowding. Reference materials housed in the appendix
offer multiple options for tree spacing depending on the planner or landowner's
ability tnthin the stand oftrees,
Uant
ater`aKs
Sources
• Bareroot Plants
o Use inzones 2-4
o Review KCD Native Plant Nurseries List inthe Appendix for locations mf
nurseries.
° Potted Plants
o Potted plants will belarger insize and more likely tosurvive. Use when
replanting sites inthe fall,
o Review KCDNative Plant Nurseries List inthe Appendix for locations of
nurseries.
° Stakes
o Use inzone l
u Sourcing options:
m Harvest stakes from local sources (native willows and red osier
dogwoods)
Page
� Purchase from Plant Materials Center, Fourth Corner Nursery, orK[D
Plant Sale
o Use 4-6'long stakes
�Ua n t"°a mo,,�~��
Bane root plants are fragile and perishable. Always handle seedling packages and
seedlings with care. Ensure that seedling roots are always kept moist and donot allow
seedlings k>freeze.
All barerocttrees and shrubs will bekept incold storage until the time nf
planting. Only those plants that can be planted within l day will be removed fnorn
storage. These plants will be kept moist in their bags and in the shade until
immediately before planting.
Before planting, only remove those plants that can be planted within l hour of
removal from the shipping bag. Plant roots will be kept moist atall times. Plants will
be planted in holes wide enough and deep enough to allow the roots to spread out
naturally no]orLrooting. Plants will beplanted otthe nursery soil level (or nomore
than 1/2inch deeper). Planting holes will bebnckMUedwith native soil and the soil
firmed gently around the roots toremove air pockets.
To maximize survival and growth, the following specifications will be followed:
Read and follow instructions inthe Appendix ''PicAi uputthe nursery" inthe
attached Oregon State University Extension Service publication "Selecting and
Buying Quality Seedlings".
The contractor will pick upplants atanursery. Record numbers and species of
plants and date received from nursery. Assure species, seed zones, and
numbers match the plan specifications listed inthe Planting Plan.
Place plants in local cold storage a\34"Fto397 in dosed seedling bags. Air
circulation must be adequate to draw off seedling metabolic heat (do not stack
bundles more than two bundles high). Plants in cold storage will be kept no
more than 3Odays before planting. |fpossible, only those plants that can be
planted inmday will beremoved from cold storage. Though less desirable,
plants can beout ofcold storage for 2days ifkept shaded and cool (less than
50^F). If hardwood trees or shrubs are too large for closed bags, they will be
kept in a cool, shaded place (less than 50"F) and the roots will be kept moist
with the bags closed around them. Any large hardwood trees and shrubs not
in cold storage will be planted within l week ofreceipt from the
nursery. "Heeling in" may beanacceptable practice for trees and shrubs
Pageln
Uant Installation
When installing plants, crews may want to rope LIP in areas where the slope is very
steep. The contractor installing the plants will need to follow their policies for working
on steep slopes and for wearing personal floatation devices (PFD) near the river. Crews
may need 10rent aboat when installing stakes along Zone l,adjacent tothe river.
It is expected that crew work on this project will be time consuming due to the steep
nature ofthe slopes and the need toenact additional safety measures,
TIMELINE & WEATHER CONDITIONS: Plant between January lOmand March
3lmwhen soil moisture isabundant and when the trees and shrubs are
dormant. However, lfthe soil issaturated, postpone planting until conditions
are appropriate to avoid soil compaction during the planting process. Op not
plant if the projected high temperature for the day based on the local forecast
will bemore than 5O°F,unless itisraining. Donot plant ifprojected high is
less than 35,[. Avoid planting ondry, windy days.
BAREROOT PLANT TEMPERATURE: During planting, plant bundles will be
kept inacool (less than 5U,F),shaded place. Keeptheseed|ingsrnoist—
cspeciaUytheroots—ataUtirnes.
w ROOT MOISTURE: Plants will be planted from a planting bag using a<rec
planting shovel orplanting hoe. Dip seedlings inclean water for lnninutejust
prior toputting them inthe planting bag. Root exposure tuair, even for half a
minute on a dry day will lead to seedling mortality, especially for conifers. Do
not allow seedlings tosit inwater for more than aminute.
° PLANTING BAG: Only place asmany plants inthe bag ascan beplanted in
one hour. Handle seedlings gently and donot overfill the planting
bag. Prepare the hole before removing the seedling from the bag. Only
remove nmcsecd|ingatahrne.
• REMOVE DEBRIS: Proceed through the planting zones removing sod (living or
dead), grass root mats, and dead blackberry canes, root balls, and roots from at
least alOiol2-inchdiameter circle ateach planting site throughout the
buffer.
• ROOT PLACEMENT. Plants should beplanted inholes wide enough and deep
enough 10allow the roots tVspread Out naturally —no JorLrooting.
PLANTING DEPTH: Bare root seedlings will beplanted ionursery soil depth
(or nomore than 112inch deeper) osindicated bythpsoi|line onthe
stern/trunk. See Figure l, drawing 12 for m satisfactorily planted tree.
° SOIL: Planting holes should bebackfiUedwith native soil and soil firmed
gently around the roots toremove air pockets. Donot compact soil.
Page 11
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lant Spacin
• Bareroot Plants
• Space bareroot shrubs 4' on center
• Space bareroot trees 16' on center (16' apart from other trees, 4' apart
from shrubs)
• Refer to the attached Planting Plan for recommended species spacings
Stakes
• Space stakes 2' on center in 2-3 rows. Offset rows (Figure 2).
•Install stakes along all of zone 1 and the steepest slope of zone 2
• Make a fresh, angled cut along the bottom of the stake
immediately before installing.
• Use rebar and a mallet to create holes in the soil if needed, Some
soils will not require rebar-created holes and stakes can be
directly pushed into the ground.
• Ensure 2/3 of stake is installed into the bank to prevent them
from washing away downstream.
Figure 2. Schematic for 2' on center layout of 2 rows of stakes
a0a0 sada t,a,,)
Pagel2
Kant^m Zones
Zone I
Willow and Dogwood staking 2'oc
Zone
Dense tree/shrub planting
Trees - lO'nc
Shrubs -4'oc
Zone
Tree planting, 10'oc
Thinning eventually
Zone
Diagram, hedgerow planting
�Existing Hedgerow
mixed invasive & native plants)
=3 roses planted l'oc
Plant Protectors
It's recommended that all newly installed trees and shrubs have a Blue Tube plant
protector installed around it These protectors assist with plant growth and protect it
from being damaged byanimals ormaintenance activities. Each plant should get a
protector and bamboo stake tmhold the protector inplace.
a t e r`n,,*,,,,
Water installed plants weekly throughout the summer months for a minimum of 3
growing seasons after installation to assist plant establishment. This is particularly
important for tree species. There is an opportunity to engage the landowners in this
process and include this maintenance step as part of their responsibility. The
Pagel]
landowner can use hoses and sprinklers to water a I I insta I led p I ants, especia I ly in areas
located in full sun and drier areas. Water all plants until the surrounding soil is
saturated. Tree watering bags may also be used and are easy for a landowner to
periodically fill,
�"a.ntenance ��on;*or,m#,,'
Aggressive post plant weed control will berequired tocontrol the blackberry,
knotweed, ivy, Hawthorne, and any other invasive weeds growing in the buffer,
Perform weed control atleast tv\ceoyear—onceinthespringandonceinihr|ate
surnnne,—unN plants are established (3-5years from initial planting). Management
methods will include minimizing competing grasses and invasive vegetation
throug hout the buffer, especially the 3 feet surrounding each plant. This can be done
by spraying an approved herbicide, hand weeding, hand mowing, or a combination of
these.
Contractor Monitoring
u Mon itorthe project site inthe summer months toinform maintenance
activities required.
= Monitor for re -growth ofblackberry, kno\vvezd,ivy, Scotch
broom, and Butterfly bush. Also monitor for other invasive
weeds establishing inthe zone.
• Report any new infestations ofknotvveedtnKing County
Noxious Weeds,
o Survivorship
|tisimportant tosample vegetation for survivorship. Randomly sample
the project site using the line -intercept method and count total plants
alive and dead. Atleast O096ofplants should survive after planting. |f
not, sot -vie replanting may benecessary,
" Line -intercept method
* Randomly sample multiple 50' lines across the project
site.
• Determine total aerial coverage ofnative vegetation and
invasive vegetation.
o Conduct monitoring throughout the length ofthe grant cycle toensure
project success.
Contractor Maintenance
o Continual maintenance ofproject areasvvU|ensureasoccessfu|pro1pct
Any re -growth m(blackberry, ivy, knotveed,reed canary grass, tansy
ragwort, orscotch broom should be dealt with as soon as possible. An
herbicide application may beneeded the first maintenance season
(5pring/Swrnrner)after plants are installed.
o Refer to Project Implementation schedule for timing ofmaintenance
o HUK8ALAYAN BLACKBERRY- Spot spray blackberry re -growth with
aquatic approved herbicide,
n INVASIVE KP6OTWEED;Infestations ofJapanese Knotvveedshould be
treated with herbicide until the infestations are eradicated. Thorough
monitoring for Knotveedthroughout the whole project areab
recommended toensure that new infestations don't establish inother
areas ofthe project.
o BUTTERFLY BUSH: U»eapproved herbicides tocut/dab any regrowth
of English Hawthorne until all are eradicated. Monitor for new sprouts in
the areas surrounding treated butterfly bushes.
o ENGLASHIVY: During the maintenance seasons, spray ivy regrowth
with aquatic approved herbicide. |fmanually removing ivy, keep the
roots from contacting any bare soil, asivy can re -root into the soil.
o TANSY RAGWORT: Hand pull any tansy that regrows and dispose ofit
inthe trash. Donot mow tansy ragwort!
n REED CANARY GRASS: Mow any reed canary grass that grows around
the newly planted trees and shrubs.
Replant as needed
o Replanting occurs Jmore than 2O96ofplants die throughout the
project site the first year,
o Replant all trees that die regardless ofpercent oftotal remaining
u Pay attention towhich species are most successful inthe project tV
direct your replanting strategy.
o Survivorship is determined by monitoring |inetransects.
Section 2 ocation a s
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"--Option-1:-Trees-Planted-1-6-feet-on-center,
• Option 2: Trees Planted 12 feet on center
-e---Op-tion--3:-Trees-Plan'ted-1-8-feet-oa-cen-ter-
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Project Description: 50,275 sq. The proposed project will include Zones 1, 2, 3, 8, 4. The project vI enhance. 781 linear feet of a the mainstem Green River. The
project area has northwestern exposure with full sunlight. There is already a fl existing area of native plants along tiro north section of the project, The knotweed patches
have been treated by King County Noxious Weeds.
Soil Type: No data, urban s Is Targets
Zone 1:: 5,600 sqThe zone has a northwestern aspect and steeply slopes down to the river. The ordinary high water line is kocated a few
feet into this zone. This area is infested with Himalayan blackberry and small patches of knotweed. This zone can be characterized
as having wet/rnoist soils with full sun. Along the northern part of this section, there is a well -established patch of Red osier
dogwood (approx 200' of shoreline). Plant Pars. zone with dogwood, willow., and cottonwood livestakes and as1'. barE:qocyl:;. 3
Zone 2
Zone 5:
18,000 sq' This zone is categorized by invasive Himalayan blackberry. There has been no treatment of the invasive species in this
zone. There are some small infestations of Japanese Knotvveed in areas along the western portion of this zone, near the river. This
zone vvill be planted densely with trees (10' on center) and shrubs to shade out the blackberry and improve the survival of the
native plants. The soil is, a mixture of rnoist to vkll-drained. The area is in full sun, with some steep slopes. \NOM trees pk.:mted, 12'
crrm,untam, tree Iheallh.
7,575 sq.' This zone is characterized by dry/rocky soils. The landowner mowed the blackberry in summer 2017, There is some
grovich of blackberry, tansy ragwort, and reed canary grass present. This zone has well -drained, rocky soils. The goal is to
stablish conifer trees spaced 10 feet apart in this zone. This spacing will allow for quick shade establishment and a reduction in
he amount of invasive species present. In 10-15 year, the trees MI need to be. thinned to allow for long-term success. By just
-istalling trees a.nd low grwoing shrubs, sightlines will remain clear to discourage illegal camping or trespassing. 1,0J trees
anted 12' o22 th(rinmg w.01 be reco...11 red to maIntwri e Hdric
600 sq' This zone is currently acting as living fence and dense hedgerow of mixed invasive and native plants. The landowner is
concerned about access from the railroad along the fence line. Native plants will be installed in a dense hedgerow and allowed to
grow tall enough to act as a fence before the invasive plants are removed from this zone. This zone is located in full sun, and the
soil is moist to dry. 60' length
6,600 sq. This zone is located on the highest part of the slope, near the parking lot, There is a sandbag wail and rocky berm
adjacent to the parking lot. This zone will be left unplanted for access. Maintenance will include some herbicide treatmentof
blackberry, scotch broom and butterfly bush, with continued rnovving,
Trees 12' Livestakes
oc or Shrubs
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Zone 5 , Access Zone Unplantable
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Type
Species
Total
Zone 1
Zone 2
`�
:
Moisture, Sunlight
Spacing
Cluster
Trees - Wetter
50
Filack cottonwood (Populus trichocarpa)
Wet/moiinto partial sun
12` oc
Oregon Ash (Fraxinus latifolia)
50
40
Wet/moist; Full sun
12` oc
Wester'n Red Cedarp-huja plicata)
40
40
Wet/moist, fte1l shade/part sun
'12' o¢;
Trees - Drier
Fly deaf Maple (Acer rnacropf�lturn
35
15
20
Moist part shade/full sun
l2` oc
_ W
Douglas fir (Pseudotsuga rnenziesil)
65
f 5
50
Moist/dry, sun/shade
12' oc
Grand Fir (Abis grandis)
65
15
50
Moist/Dry, part shade/fullst.rn
12° oc
Trees Total
345
100
12
120
0
5! rubs - Wetter
Black (tawthorn (Crataecus dal lash)
50
50
Moist, part shade/full sun
4
Paceffic nirrehar'k (Physocarpus capit )
100
'100
Wet/moist, fful sun
4' oc
Peafrlit ed Rose (Rosa pisocarpa)
100
100
Moist, full sun
4 oc
Red Osier Dogwood (Corpus sericea)
200
200
Wet/moist, part shade/fu11 sun
2 oc
VV'illow, Pacific Salix lasiandra
250
250
Wet, fuI sun
2 oc
loow
WMow, Sitke (Sahx sitchensrs)
250
250
Wet fuB1 sun
2' c
next 2 rows
Shrubs - Drier
_.
Hazelnut (Coryh.rs eornuta)
100
100
Moist/Dry, part shade/pail sun
4 oc
Nootka Rose (Rosa nutkana)
250
200
50
Moist/dr., full sun
4 oc
Ocean Spray (Holodiscus discolor)
100
100
Dry/Moist, part shade/pars sun
4' oa
Serviceherry (Amatanchier alrrifolia )
100
100
Moist/Dry, full sun
4' rxc
Snowberry (Symphoricarpos albus)
700
200
500
Moist/dry, part shade/full sun
4` oc,
Tall Oregon Grape (Mahonia aquilifolia)
580
100
480
Dry/Moist, part shade/full sun
Shrubs Total
2780
700
1000
880
100
TOTAL PLANTS
3125
800
1125
1100
100
en ices
,61NROMEN9
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w1,1' oOt
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its?
,190
' 701910,17.,T7:"WirMWM1
Bareroot trees and shrubs are a type of nursery stock that is. delivered without soil or a pot around the roots. These plants are grown
in nursery beds, lifted from the ground while dormant and shipped in bags. Bareroot trees and shrubs should he planted beforethe
buds open in spring.
When selecting plants for a project, choose plants grown from seed collected in western Washington and avoid plants from the east
side of the state or country. Plants grown from western Washington or Oregon seed sources are better adapted to the growling condi-
tions in King County,
Keep plants cool and roots moist until planted. Moisten roots with water and store in a shaded location or refrigerator.
mapt4"pftEr
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4 Scalp a two foot circle in planting area, removing all sod and weeds,
Dig a hole wide enough and deep enough for roots to spread out. Remember that roots grow
down and laterally.
Mound some soil in the center of the planting hole, Drape roots over the mound.
Position the roots so they hang downover the mound and are not turned up or
crowded„
Plant trees and shrubs to the depth they were planted in the nursery. The junction of the
stern and root should be level with the ground,
4 Back fill the planting hole with loose soil and gently pack the surface after filling the hole.
Build a berm around the planting hole to hold water.
Water the plant thoroughly after backfilling the planting hole to eliminate any rerno nmq ai
pockets,
Straw Wattle Installation
Proper installation of the straw wattle is essential in order to insure the success of the product.
Straw wattles are designed for |ovv surface flows, not to exceed 1 cfn for urnaU areas. While they
work well on stream banks, they should not be placed in the path of high water flow, On s|opas,
wattles should be installed on contour with a slight downward angle at the end of the row in order to
prevent pmnding at the mid -section. No overall slope preparation is needed prior to installation;
hom*ever, straw wattles should always be installed in shallow trenches according to the guidelines
given below, Running lengths of vvoU|es should be abutted firmly to ensure no leakage at the
abutments, Guidelines regarding vertical spacing are given below. The wattles should be pinned
securely to the ground according to instructions in order to insure iheir stability and the success of
the installation.
SpAC|N�-DOVVNSLOPE
Wr�/ca| 'spacing for slope installations should be determined by site
conditions: slope gradient and soil type are the main factors.
/\good rule -of -thumb is:
* 1 �-1 slopes =1Ofeet apart
° 2:1slopes =2Qfeet apart
~ 3�1slopes =3Ofeet apart
° 4:1 slopes = 40 feet apart. etc.
However, adjustments may have tnbemade for the soil type:
� For soft, loamy soils adjust the rows closer together.
� For hard, rocky soils - adjust the rows further apart,
TRENCHING
Use a hand tool such as maddoxorpick to score the ground. Using a shovel, dig the trench to the
needed depth. GniV from excavating the trenches can be placed on the uphiU, orflow side, of the
trench tobeused during installation,
w For soft, loamy soils: dig a 3-5 inch trench.
� For hard, rocky soils: dig a 2'3 inch trench.
INSTALLING
Lay the first straw wattle snugly in the trench. No daylight should be seen under the wattle. Pack
soil from trenching against the wattle on the uphill side, When installing running lengths ofstraw
vvatt|es, you must butt the second wattle tightly against the first wattle. DO NOT overlap the ends
on top of each other, Overlapping behind each other has been done with some success. Stake
the straw wattles at each end and four foot on center.
For, example:
~ 25foot wattle uses 8stakes
* 20foot wattle uses 5stakes
° 12foot wattle uses 4stakes
Stakes should bedriven through the middle cfthe wattle, leaving 2'3inches ofthe stake protruding
above the wattle, A heavy sediment load will tend to pick the vva#|e up and cou|d pull it off the
stakes if they are driven down too |ovv It may be necessary to make a hole in the vvaiUe with the
pick end of your noaddox in order to get the stake through the s1novv When straw wattles are used
for flat ground applications, drive the stakes straight down,- when installing vvz1t|es on s|opes, drive
the stakes perpendicular tothe slope.
Drive the first end stake of the second vva#|e at an angle toward the first wattle in order to help abut
them tightly together. If you have difficulty driving the stake into exin*nne|y hard or rocky sYopes, a
pilot bar may beneeded tobegin the stake hole.
|
FLAT GROUND APPLICATIONS
For installations along sidewalks or behind curbs it may not be necessary to stake the vvatt|es,
hovvever, trenches must still be dug. If you have not yet back -filled behind the sidewalk or curb, lay
the vva#|e snuggly against it first, then backfiU behind the wattle. Your trench in done! For
installations around storm drains and inlets, trenches and staking will be needed.
Fit wattle in trench snugly up against the sidewalk or ourb, Around storm drains or in|ets, the wattle
should be back 1-1}� ft. and should direct water flow toward the angle of drainage, If all drainage
angles into the in|et, snake the wattle all the way around the inlet, using more than one vvotVe if
needed.
STAKING
We naomnnrnend using wood stakes orwillow cuttings, rather than metal pins, to secure the straw
wattles. Wood stakes will eventually bio'degrade, and willow cuttings will grow and provide extra
stabilization. Be auna touse a stake that islong enough to protrude several inches above the wattle:
18" is good length for hard, rocky soil. For soft. loamy soil use a 24" stake for greater security.
The diameter of the stake should be approximately 1" for ease of driving through the wattle.
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ALLOWABLE ALTERNATIVE
TIE -DOWN METHOD
STAGGER OVE.RLAPS (TYP )
r7,7"7:F.FAT'',A4
PLAN VIEW
8" DIAMETER
WATTLE SPACING TABLE
SLOPE MAXIMUM SPACING
1V
2F1 'IV 20'
, 1V 30 0"
4H • IV
CONTOUR LINE. (TVP.)
ANGLE TERMINAL END LIIAllg I, 24" 10 418”
t 0 PREVENT FI OW AROUND VOA FILE
(TYP )
WA FILE
•TRFNCH NOTE' 1
2'' N 2" P, 24" WOODEN
STAKE (PIP.)
AREA AVAII AB! FOR 00020004
TRAPPING (TYP )
SECTION
2" 2" 24" UN -TREATED
•z WOODEN. S1A0E (TYP )
6" DIAMETER
MINIMUM
WATTLE DETAIL
SPACING TABLE (IYP
WATTLE INSTALLATION ON SLOPES
NOTES
1 Watlis
9-141
be In
Secur
ends
3. Corn
Instal0
5. WatlIc
a ra)n
entree
6. Pell DI
%ail(
7. Refer
WATTLE (0044.)
NOTE"S
PLANT SO THAT TOP OF
ROOT BALL IS EVEN WITH
THE FINISHED GRADE
P P :";-•
LOOSEN ROO"FBALL
STRAIGHTEN OR PRILJNE
ENCIRCLING ROOTS ON
ALI_ CONTAINER PLANTS
6°'
PLANTING HOLE TO BE
2 X DIA, OF ROOTBALL
DE
D
T
FORM SAUCER WI
HIGH CONTINUOLP
ti)OWNHILL SIDE 01
MULCH, KEEP
AWAY FROM TRUN
FINISH GRADE
SOIL, !?
EXISTING SUBGFA
fAMP TO REMOV
POCKETS
Attachment 13
Portion of Premises
Where Entry is Permitted
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Attachment C
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