HomeMy WebLinkAboutCOW 2012-01-09 Item 4C.2 - Agreement - Duwamish Gardens Design with JA Brennan Associates for $316,066AGENDA ITEM TI'TL.E
COUNCIL AGENDA SYNOPSIS
Initials ITEMNO.
Meeting Date Prepared by I Mayo s review I Councill
01/09/12 BG c I CA) I
01/17/12 BG 4. C (2)
ITEM INFORMATION
I STAFFSPONSOR: BOB GIBERSON ORIGINAI,AGI NDADATI3: 01/09/12
Duwamish Gardens Design Consultant Selection and Agreement
CATEGORY Diewsj� ion Motion Resolution Ordinance Bid Award Public Hearing Other
Mtg Date 01109112 Mtg Date 01117112 -Aft
g Date Mtg Date Mtg Date Mtg Date Mtg Date
SPONSOR Council Mayor .HR DCD .Finance .Fire IT P&R Police PW
SPONSOR'S This contract is for the design of the Duwamish Gardens Project. Nine RFPs were received
SUMMARY and two consultant firms were interviewed. 7A Brennan was unanimously determined to be
the most qualified to design this salmon habitat project at the Duwamish Gardens site.
Council is being asked to approve the consultant agreement with ]A Brennan in the amount
of $316,066.00.
RI- _,VIEWED BY ❑COW Mtg. CA &P Cmte F &S Cmte Transportation Cmte
Utilities Cmte Arts Comm. Parks Comm. Planning Comm.
DATE: 12/12/11 COMMITTEE CHAIR: VERNA SEAL
RECOMMENDATIONS:
SPONSOR /ADMIN. Public Works Department
COMMrr °TI =_r Unanimous Approval; Forward to Committee of the Whole
COST IMPACT FUND SOURCE
EXPENDITUxE RI- AMOUNT BUDGETED APPROPRIATION REQUIRED
$316,066.00 $316,000.00
Fund Source: 301 PARKS (PG 64, 2012 CIP)
Comments.
MTG. DATE I RECORD OF COUNCIL ACTION
01/09/12
01/17/12
MTG. DATE J ATTACHMENTS
01/09/12 I Informational Memorandum dated 12/09/11
Consultant Selection Scoring Sheet
Consultant Agreement
Minutes from the Community Affairs and Parks Committee meeting of 12/12/11
01/17/12
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City of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
TO: Mayor Haggerton
Community Affairs and Parks Committee
FROM: Bob Giberson, Public Works Director 0
DATE: December 9, 2011
SUBJECT: Duwamish Gardens
Project No. 90630102
Consultant Selection and Agreement
ISSUE
Consultant selection and agreement for design of the Duwamish Gardens Project.
BACKGROUND
In March 2011, the City issued a Request for Proposals for the design of the Duwamish
Gardens project. The call for proposals included developing an archeological data recovery
plan, contracts plans, specifications, cost estimate, and obtaining all required permits. The
design will be based on a conceptual site plan developed by the WA State Department of
Fish and Wildlife (WDFW) that included the excavation of approximately 55,000 cubic yards
of material, providing 2 acres of shallow water mudflat and marsh habitat, a small trail,
overlook, and interpretive signs.
In April 2011, two consultant teams were interviewed in a competitive process after being
short listed from nine RFP's that were received. The teams interviewed were JA Brennan
Associates and Ridolfi. The consultants were scored by the selection panel, references
were checked, and JA Brennan was unanimously selected as the firm that best meets the
needs of the project.
DISCUSSION
Staff negotiated a consultant contract for the full design of Duwamish Gardens in the
amount of $316,066.00. This was significantly over the original estimate of $250,000.00.
Further cuts in the design scope were not deemed advisable by staff or the consultant, so
staff then contacted the WA State Recreation and Conservation Office (RCO) and was able
to secure an additional $50,045.00 in grant funding.
Fiscal Impact: A total of $316,000.00 is currently budgeted with $300,273.34 available in
grant funding and the remaining $15,702.66 will come from City funds currently budgeted.
RECOMMENDATION
Approve design contract with JA Brennan Associates for design of the Duwamish Gardens
project in the amount of $316,066.00 and consider this item at the January 9, 2012
Committee of the Whole and subsequent January 17, 2012 Regular meetings.
Attachments: Consultant Selection scoring sheet
Consultant Agreement
WAPW Eng \PROJECTS\A- DR Projects \06 -DR02 (Duwamish Gardens) \Design\INFO MEMO Design Selection J.A. Brennan.docx
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CONSULTANT AGREEMENT .FOR
DESIGN SERVICES
THIS AGREEMENT is entered into between the City of Tukwila, Washington, herein -after referred
to as "the City and.J.A. Brennan Associates, PLLC, hereinafter referred to as "the Consultant in
consideration of the mutual benefits, terms, and conditions hereinafter specified.
1. Project Designation. The Consultant is retained by the City to perform Design services in
connection with the project titled Duwamish Garden`s Design.
2. Scope of Services. The Consultant agrees to perform the services, identified on Exhibit "A"
attached hereto, including the provision of all labor, materials, equipment and supplies.
3. Time for Performance. Work under this contract shall commence upon the giving of written
notice by the City to the Consultant to proceed. The Consultant shall perform all services and
provide all work product required pursuant to this Agreement within 365 calendar "days from
the date written notice, is given to proceed; unless an extension of such time is granted in
writing by the City.
4. Payment.' The Consultant shall be paid by the City for completed work and for services
rendered under this Agreement as follows:
A.' Payment for the work 'provided by the Consultant shall be made as provided on Exhibit
".B" attached hereto; provided that the total amount of payment to the Consultant shall not
exceed $316,066.00 without express written modification of the Agreement signed by the
City.
B. The Consultant may submit vouchers to the City once per month during the progress of
the work for partial payment for that portion of the project completed to date. Such
vouchers will be checked by the City arid, upon approval thereof, payment shall be made
to the Consultant in the amount approved.
C. Final payment of any balance due the Consultant of the total contract price earned will be
made promptly upon its ascertainment and verification by the City after the completion of
the work under this Agreement and its acceptance by the City.
D. Payment is provided in this section shall be full compensation for work performed,
services rendered, and for all materials, supplies, equipment and incidentals necessary to
complete the work.
E. The Consultant's records and accounts pertaining to this Agreement are to be kept
available for inspection by representatives 'of the City and state for a period of three (3)
years after final payments. Copies shall be made available upon request.
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Ownership and Use of Documents. All documents, drawings, specifications and other
materials produced by the Consultant in connection with the services rendered under this
Agreement shall be the property of the City whether the project for which they are made is
executed or .not. The Consultant shall be permitted to retain .copies, including reproducible
copies, of drawings and specifications for information, reference and use in connection with
the Consultant's endeavors. The Consultant shall not be responsible for any use of the said
documents, drawings, specifications or other materials by the City on any project other than
the project specified in this Agreement.
6. Compliance with Laws. The Consultant shall, in performing the services contemplated by
this Agreement, faithfully observe and comply with all federal, state, and local laws,
ordinances and regulations, applicable to the services to be rendered under this Agreement.
7, Indemnification.. The Consultant shall indemnify, defend and hold harmless the City, its
officers, agents and employees from and against any and all claims, losses or liability,
including attorney's, fees, arising from injury or,•death to.. persons or damage to property
occasioned by any act, omission or failure of the Consultant, its officers, agents and
employees, in performing the work required by this Agreement. With respect to the perform-
ance of this Agreement and as to claims against the City, its officers, agents and employees,
the Consultant expressly waives its immunity under Title 51 of the Revised Code of
Washington, the Industrial Insurance for injuries to its employees, and agrees that ;the
obligation to indemnify, defend and hold harmless provided for in this paragraph extends to
any claim brought by or on behalf of any employee of the Consultant. This waiver is mutually
negotiated by the parties. This paragraph shall .not apply to any damage resulting from the
sole •negligence of the City, its and employees. To the .extent any of the damages
referenced by this paragraph were caused by or resulted from the concurrent negligence of the
City, its agents or employees, this obligation to indemnify, defend and hold harmless is valid
and enforceable only to the extent of the negligence of the Consultant, its officers, agents and
employees.
Insurance. The Consultant shall secure and maintain in force throughout the duration of this
contract comprehensive general liability insurance, with a minimum coverage of $500,000 per
occurrence and $1,000,000 aggregate for personal injury; and $500,000 per occurrence/
aggregate for property .damage, and professional liability insurance in the amount of
$1,000,000.
Said general liability policy shall name the City of Tukwila as an additional named insured
and shall include a provision prohibiting cancellation of said policy except upon thirty (30)
days prior written notice to the City., Certificates of coverage as required by this section shall
be delivered to the City within fifteen (15) days of execution of this Agreement..
9. Independent Contractor. The Consultant.and.the City agree that the Consultant is an inde-
pendent contractor with respect to the services provided pursuant to this Agreement. Nothing
in this Agreement shall be considered to -create the relationship of employer and employee
between the parties hereto. Neither the Consultant nor any employee of the Consultant shall
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be entitled to any benefits accorded City, employees by virtue of the services provided under
this Agreement. The City shall not be responsible for withholding or otherwise deducting
federal income tax. or social security or .for contributing to the state industrial insurance
program, otherwise assuming the duties of an employer with respect to the Consultant, or any
employee of the Consultant.
10. Covenant Against Contingent Fees. The Consultant warrants that he has not employed or
retained any company or person, other than a bonafide employee working solely for the
Consultant, to solicit or secure this contract, and that he has not paid or .agreed to pay any
company or person other than a bonafide employee working solely for the Consultant, any
fee, commission, percentage, brokerage fee, gifts, or any other consideration contingent upon
or :resulting from the award or making of this contract. For breach or violation of this warrant,
the City shall have the right to annul this contract without liability, or in its discretion to
deduct from the contract price or consideration, or otherwise recover, the full amount,of such
fee, commission, percentage; brokerage fee, gift, or contingent fee.
11. Discrimination Prohibited. The Consultant, with regard to the work performed by it under
this Agreement, will not discriminate on. the grounds of race, color, national origin, religion,
creed, age, sex or the presence of any physical or sensory handicap in the selection and
retention of employees or procurement of materials or supplies.
12. Assignment. The Consultant shall not sublet or assign any of the services covered by this
Agreement without the express written consent of the City.
13. Non- Waiver. Waiver by the City of any provision of this Agreement or any time limitation
provided. for in this Agreement shall not constitute a waiver of any other provision.
14. Termination.
A. The City reserves the right to terminate this, Agreement at any time by giving ten (10)
days written notice to the Consultant.
B. In the event of the death,. of a member, partner or officer of the Consultant, or any of its
supervisory personnel assigned to the project, the surviving members of the Consultant
hereby agree to complete the work under the terms of this Agreement, if requested to do
so by the City. This section shall not be a bar to renegotiations of this Agreement
between surviving members of the Consultant and the City, if the City so chooses.
15. Attorneys Fees and Costs. In the event either party shall bring suit against the other to
enforce any provision of this Agreement, the prevailing party in such suit shall be entitled to
recover its costs, including reasonable attorney's fees, incurred in such suit from the losing
party-
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16. Notices. Notices to the City of Tukwila shall be sent to the following address:
City Clerk
City of Tukwila
6200 Southcenter Boulevard
Tukwila, WA 98188
Notices to Consultant shall be sent to the following address:
Jim Brennan, Principal
J.A. Brennan Associates, PLLC
100 S. King St., Suite 200
Seattle, WA 98104
17. Integrated Agreement. This Agreement, together with attachments or addenda represents
the :entire and integrated Agreement between the City and the Consultant and supersedes all
prior negotiations, representations, or agreements written or oral. This Agreement may be
amended only by written instrument signed by both the City and the Consultant.
DATED this day of 20
CITY OF TUKWILA CONSULTANT
By:
Mayor
Printed Name: Tames A. Brennan
Title: Principal
Attest/Authenticated: Approved as to Form:
City Clerk Office of the City Attorney
4
December 6, 2011
a. b rennan
Landscape Architects Planners
100 S. King Street, Suite 200, Seattle, WA 98104
t.206.583- 0620 f. 206.583.0623
Exhibit A
Scope of Work
Duwamish Gardens
Prepared For:
Ryan Larson, the City of Tukwila Public Works Department
Project Description
www.jabrennan.com
The project involves design and permitting services for the construction of estuarine fish habitat on a 2.16
acre City owed site. A conceptual site plan has been developed by the WDFW and calls for the
excavation of 55,000 cubic yards of material to establish approximately 2 acres of shallow water mudflat
and marsh habitat and approximately 0.8 acres of uplands planted with native vegetation.
Other work will include
a small trail
view deck
kiosk
Parking (on street or on site)
Hand -carry boat launch
Retaining walls (upland only)
Minimal grading below OHW
The work to be performed by the CONSULTANT consists assisting with Section 106 tasks related to
archaeological site 45 -KI -703, Contract Plans, Specifications and Estimate (PS &E), and submitting all
required permits. Additional items may include the development of a contaminated soil remediation plan.
Task 1 Administration
Administration tasks include meeting coordination, scheduling, contract administration and subconsultant
administration costs and expenses.
Task 2 Site Inventory and Analysis
This task includes site investigations from a variety of disciplines in order to ascertain site conditions,
constraints and opportunities associated with the proposed design. Site inventory and analysis will
include survey, hydrologic analysis, geotechnical evaluation, contaminant testing, cultural resource
investigation, and other general site reconnaissance to collect important site information. The City of
Tukwila will provide wetland delineation if needed.
Task 2.1 Landscape Site Analysis
J.A. Brennan Associates:
J.A. Brennan will provide base mapping to team members, utilizing the survey and administer
existing information for review by the appropriate team members.
City of Tukwila Duwamish Gardens Scope of Work 1
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Deliverable:
OHW delineation, base plan, vicinity map
Task 2.2 Cultural and Historical Resource In vestigations
A recorded archaeological site (45 -KI -703) is located immediately east of the project area; the
site was excavated in 2005 prior to construction of Sound Transit's light rail line. The current
project is subject to Section 106 of the National Historic Preservation Act "Section 106 The
Section 106 process requires a project proponent to identify any cultural resources that may be
affected by a proposed project. Therefore cultural resources efforts will focus on determining if
cultural deposits extend into the project area. If cultural deposits do extend into the project area, it
is assumed those deposits would be eligible for listing in the National Register of Historic Places.
In order to evaluate the cultural deposits it will be necessary to determine the nature and extent of
the deposits, with a focus on any new information the newly identified deposits can provide
compared with the 2005 excavations. PRA's focus is on documenting the extent of any deposits
so that design plans can avoid impact to the greatest extent possible.
Task 2.2.1 Regulatory Assistance
Meetings
PRA will attend up to 3 meetings with tribes and USACE to assist with consultation
under Section 106 of the National Historic Preservation Act. The meetings are assumed
to be held on site or at City of Tukwila offices. The first meeting should be scheduled as
early in the planning process as possible in order to adequately address the concerns of
the stakeholders regarding archaeological site 45 -KI -703. It is anticipated that the first
meeting may inform the approach to conducting further cultural resources tasks.
Attendees at the first meeting are expected to include City of Tukwila project manager,
USACE archaeologists, tribal cultural resources staff, Department of Archaeology and
Historic Preservation (DAHP), possibly King County archaeologists, JA Brennan project
manager, and PRA staff.
Prior to the first meeting, PRA will review any notes or correspondence made by the City
during previous meetings with stakeholders regarding archaeological concerns.
Correspondence
PRA will prepare Section 106 correspondence for City of Tukwila signature.
Correspondence is expected to include consultation initiation letter and definition of Area
of Potential Effects. This task also includes reviewing correspondence sent by
stakeholders.
Task 2.2.2 Prepare Unanticipated Disco very Plan
Because of the proximity of a recorded archaeological site, it is anticipated that
stakeholders will request preparation of an unanticipated discovery plan (UDP). The UDP
will outline the procedures to be followed if additional cultural deposits are identified as
well as provide brief context for the site and any subsequent discovery. The UDP will not
be as detailed as a Monitoring Plan. A draft UDP will be prepared for review by
stakeholders. Upon receipt of comments, PRA will finalize the UDP. The City will be
responsible for distributing the draft and final UDP.
City of Tukwila Duwamish Gardens Scope of Work 2
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The UDP should be approved before any ground disturbing activities take place on the
site.
The UDP should be approved before any ground disturbing activities take place on the
site.
Task 2.2.3 Observe Contaminated Soil Testing
Up to 14 geoprobes will be collected as part of the contaminated soils study. Because
observations made during contaminated soil testing will help to identify the nature and
extent of cultural resources, PRA will observe contaminated soil testing in coordination
with geotechnical investigations. This will be conducted to leverage deep testing
methods for cultural resources investigation. Cultural deposits (if present) are anticipated
at approximately 8 -10' below surface; geoprobe sampling will extend to 12' below
surface in order to exceed the expected depths of cultural deposits. This will allow a
deeper look than traditional archaeological sampling could accomplish. Fourteen
geoprobes will be taken from across the project area; sampling is anticipated to be
conducted for 2 days. PRA will visually inspect the geoprobes and take notes and
photographs. PRA will also take sediment samples for macrobotanical analysis.
Identification of cultural resources during soil testing will not be not be grounds for
stopping investigations (unless human remains are identified; human remains are not
expected).
Task 2.2.4 Macrobotanical Analysis
In order to evaluate whether cultural material extends into the project area, PRA will
analyze sediments for macrobotanical remains (presence of burned plants including
charcoal; this is not taxonomic analysis). This analysis is proposed based on the known
types of cultural deposits found at 45 -KI -703 (charcoal rich sand that is believed to be
more diffuse to the west of the 2005 site boundaries). Although charcoal staining is a
strong indicator of cultural materials, presence of macrobotanicals will provide a more
refined investigation and efficiently maximize cultural resources data collection identify
areas of cultural activity.
Task 225 Monitoring Memo
PRA will prepare a monitoring memo summarizing the results of the geoprobe
monitoring and microbotanical analysis; the memo will include maps incorporating
cultural resources data. PRA will submit the draft monitoring memo to City of Tukwila
for distribution to stakeholders. PRA will incorporate comments and produce a final
memo.
Task 2.2 Deliverables:
Meeting notes, draft correspondence, draft and final UDP, draft and final monitoring memo.
City of Tukwila Duwamish Gardens Scope of Work 3
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Task 2.2 Assumptions:
1. No coordination will be necessary for the Carosino House or other standing structures
(such as documentation or consultation prior to demolition)
2. Only one draft of each deliverable will be required
3. The City will involve USACE in cultural resources discussions in anticipation of their
involvement; USACE involvement may initially be advisory.
4. Meetings are assumed to take up to 2 hours each plus travel time.
5. SEPA checklist will refer to the Section 106 work and will not require any additional
reporting for Question 13.
6. No construction monitoring is included. No data recovery or testing is included.
7. Additional mitigation efforts may be requested by stakeholders, depending on the results
of various investigations.
8. Archaeological investigations are expected to result in up to 1 cubic foot of samples
which will need to be curated. Every effort will be made to reduce the curation burden.
The cost for curation of samples is estimated at NTE $2000 (in perpetuity). This cost is
not included in the budget.
Task 2.3 Geotechnical Eva /uation
Shannon Wilson:
The geotechnical site assessment scope of services includes data collection, testing and
preliminary geotechnical design services for slope stability, foundation design of the viewing
platform, and construction dewatering.
Task 2 3.9 Subsurface Explorations
S &W will drill and sample 60 -foot and 40 -foot deep borings for purposes of slope
stability in the middle of the site. Soil samples will be taken at 2.5 -foot intervals in the
upper 20 feet and then at 5 -foot intervals below 20 feet. The two borings will have
pressure transducers /dataloggers for a period of two months to monitor groundwater
levels and fluctuations. If the soils in the two new borings are consistent with boring AB-
18 completed by AMEC for the Sound Transit pier at the southeast corner of the site,
S &W will assume that subsurface conditions are relatively uniform across the site and the
combined data will be used to design the pile foundations for a proposed public viewing
platform. If conditions are not consistent among the two new borings and the Sound
Transit pier boring, we will recommend an additional boring at the location of the
viewing platform.
Task 2.3.2 Laboratory testing
The laboratory testing program will consist of 12 grain size distributions and 18 water
contents to characterize the soils.
City of Tukwila Duwamish Gardens Scope of Work
AN
Task 2.3 .3 Slope StabilityAnalysis
Slope stability analyses will be performed at three locations for configurations of slope
and river fluctuations, to include the northern cut slope, the temporary dike between the
proposed basin and the river, and the cut slope in the proximity of the Sound Transit pier.
S &W will identify maximum stable side slopes of native material at each of the three
locations. This does not include interaction analysis between the proposed basin slope
cut and the Sound Transit pier.
Task 23.4 Viewing Deck Pile Design Analysis
S &W will provide recommendations for foundation support for a proposed viewing
platform and work with and provide design parameters for a structural engineer in the
deck design.
Task 2.3,5 Pavement Design Analysis
S &W will design will design a flexible pavement section for the parking area using the
1993 AASHTO Guide for Design of Pavement Structures.
Task 23.7hydrogeologic Assessment
The groundwater hydrogeologic and environmental assessment objectives focus on two
key considerations including 1) characterization of groundwater hydrogeology for
evaluation of potential groundwater contamination and 2) construction dewatering
requirements.
Deliverables:
Technical Memo Geotechnical Site Evaluation
Assumptions:
Shoreline exemption permits to be provided by the City prior to drilling.
A proposed wall for a trail to the river's edge will not require design engineering.
The additional boring referenced above is not included in the cost estimate.
Anticipated traffic loads on parking area pavement will be provided by the City.
Subgrade modulus values for pavement design will be correlated from existing
geotechnical data; no new in situ or laboratory testing will be performed.
Contaminated Soils
Task 2.4 Contaminated Soils Groundwater
Shannon Wilson:
The environmental scope of services includes a review of a previous Phase 2 Environmental Site
Assessment (ESA) prepared for the site in 2002 by Garry Struthers and Associates (GSA),
sampling to assess the presence and extent of the soil and groundwater contamination in order to
adequately characterize and design project specifications for disposal of soil excavated during
construction, and to address the potential treatment and discharge options for groundwater
generated during excavation dewatering. Based on review of the Phase 2 ESA prepared CDM in
2008 the following potential environmental issues will be assessed:
potential near surface soil contamination (based in information from the GSA report) and
City of Tukwila Duwamish Gardens Scope of Work
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contaminated groundwater at the northwest corner of the site.
Task 2.4.1 Previous Study Review
The Phase 2 ESA prepared by CDM was reviewed for preparation of this scope. The
GSA report is referenced in that report, but was not previously available. The findings of
the GSA report, as reported, in brief, in the CDM report indicate that the surface soil at
the site is contaminated with carcinogenic polynuclear aromatic hydrocarbons (cPAHs),
lead, and chromium at levels that exceed the exceed the Washington State Department of
Ecology Model Toxics Control Act (MTCA) Method A cleanup levels. According to the
CDM report, this finding was based on extrapolation from composite samples collected
from four quadrants of the site. These results are important because they indicate that the
entirety of the surface soil at the site is contaminated at levels that would require special
handling and disposal, and in the case of the lead and chromium, additional waste
disposal characterization analysis.
We will review the GSA report to better understand the significance of these findings.
This may lead to a reduction in scope of the near surface soil assessment in Task 2.4.2, if
GSA's interpretation of the data is found to be overly conservative or in error.
Task 2.4.2 Near-Surface Soil Assessment
A discussed above, the GSA Phase 2 ESA, as reported in the CDM report, indicates that
near surface soils throughout the site are contaminated at levels that exceed the MTCA
cleanup levels. Soil contamination of this level will require special disposal at a Resource
Conservation and Recovery Act (RCRA) Subtitle D facility during construction.
However, the initial results were reportedly extrapolated from composite samples and are
likely conservative.
The following is an approximate summary of likely construction costs for clean and
contaminated soils:
Clean soil disposal, $15 /Ton, approximate $152,000 project disposal cost (not
including transport)
Contaminated soil disposal at Subtitle D Facility, $45 /ton, approximate $450,000
project disposal cost (not including transport)
Performing the soils study could result in a project savings of $200,000 to $300,000, as
well as provide more comprehensive site characterization which could be beneficial
during project permitting and construction contract document development and the
bidding process. Therefore, this scope of services recommends the following soils
contamination work to complete the studies to confirm or discount the presence of these
contaminants at levels that will require special disposal during construction.
The site is approximately 2.16 acres in size, and samples will be collected for the top 2
feet using Ecology's guidance on sampling The approximately 7,000 cubic yards of
soils in question would be sampled at a rate of 10 samples per the first 2,000 cubic yards
of material, and then an additional sample for each additional 500 cubic yards thereafter
for a total of 14 geoprobe samples, with soils samples also collected from 2 geotechnical
borings, will be required to characterize the upper 2 feet of soil. The site will be divided
into 20 approximately equal sized grids and the geoprobes will be advanced at the
approximate center of each grid.
City of Tukwila Duwamish Gardens Scope of Work
AM,
The samples will be collected using a direct -push geoprobe rig. The geoprobe is a direct
push boring rig with a 2 inch outside diameter (O.D.) casing that is advanced using a
percussive force rather than using an auger to remove soils in its path. Geoprobe soil
samples are collected in 4 -ft long, plastic lined sections. While only the near- surface soil
is assumed to be contaminated, the geoprobes will be advanced and 3 samples collected
for each boring to 12 feet below ground surface to provide additional information for the
cultural resources assessment. Soil samples collected from the geoprobes will be
classified according to their geology and field screened for volatile organic compounds
(VOCs) and hydrocarbon contamination using a photoionization detector (PID). Prior to
conducting the field work, we will prepare an internal Sampling and Analysis Plan that
describes in detail the proposed sampling procedures.
One composite laboratory contaminated soil sample each will be collected from the 0 -2
foot interval and the 2 -4 foot geoprobe tubes. Both samples will be submitted to the
laboratory for analytical testing for cPAHs, lead, and chromium; however, only the 0 -2
foot interval sample will be analyzed initially. If the results of the 0 -2 foot sample
indicate that the soil in that interval is contaminated above a MTCA Method A cleanup
level, then the 2 -4 foot interval sample will be analyzed to assess the potential vertical
extent of contamination. Additional samples may be collected if field screening of the
geoprobe cores indicate that a contaminant other than PAHs and metals is present, and /or
if indications of contamination are
Each geoprobe location will be cleared by both private and public utility locators. We
anticipate that the sampling will take 2 full days to complete.
We will prepare a media characterization report that includes a summary of our field
work, figures showing sample locations and soil disposal designation for each grid, tables
summarizing the analytical data, and the raw analytical laboratory reports.
Task 2.4.3 Contaminated Groundwater
The groundwater hydrogeologic and environmental assessment objectives focus on two
key considerations including characterization of groundwater hydrogeology for
evaluation of potential groundwater contamination and construction dewatering
requirements (see previous task 2.3.5 above).
A previous Phase 2 ESA study indicated that solvent related volatile organic compounds
(VOCs) were detected in groundwater samples. The groundwater assessment will further
evaluate the presence of these contaminants in groundwater that could affect discharge
permitting for dewatering fluids generated from that area of the site.
Up to five groundwater samples will be collected in the geotechnical borings and wells
and geoprobe sampling locations. The samples will be submitted to an analytical
laboratory for analysis of halogenated VOCs. The results of this analysis will be
included in the media characterization report along with our recommendations for
potential treatment of contaminated dewatering fluids prior to discharge.
Deliverables:
Technical Memo Soils and Groundwater Contamination Report
Assumptions:
City of Tukwila Duwamish Gardens Scope of Work
65
1. According the Phase 2 ESA, there are also two underground storage tanks
present at the site, however; it is our understanding that these tanks will be
removed by the City prior to construction.
2. Shoreline exemption permits to be provided by the City prior to geoprobe testing.
3. The consultant will coordinate utility locates.
4. No contamination occurs below a depth of 4ft.
5. Soil borings need to be collected to a depth of 12ft to provide adequate
characterization for archaeological and cultural resources assessments.
6. The project archaeologist will retrieve soils samples from Shannon Wilson for
their review, and /or attend the site during geoprobe sampling and boring
activities.
7. Investigation- derived waste (i.e. geoprobe cuttings and decontamination water)
will be stored in DOT approved drums on site.
8. Disposal of lab samples reviewed at a separate location by the Archaeologist will
be the responsibility of the Archaeologist.
Task 2.5 Estuarine Ecology
Identify Ordinary High Water Mark (OHWM)
We will identify the OHWM and include this key feature on the project base maps. The
following tasks will be accomplished:
Coordinate with the Washington Department of Ecology (WDOE) to apply the
appropriate protocol for the OHWM.
Field flagging of OHWM.
Coordinate with survey crew to map flagging.
Conduct Estuarine Ecology Assessment and Pro vide Habitat Design Recommendations
In support of the overall habitat design support, TEC will compile and review various
relevant background documents in support of the design process. No field data collection
will be conducted for this task.
Deliverables:
Estuarine ecology and habitat design support memo.
Task 2.6 Hydrologic and Hydraulic Analysis:
City of Tukwila Duwamish Gardens Scope of Work
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Task 2.6.1 Marsh hydrology, geomorphology and vegetation zones
The marsh vegetation and geomorphologic characteristics are important in developing the
project grading plans. This task will involve the following evaluation elements for
supporting recommendation of marsh grading plan elevations.
Identify and locate marsh vegetation and types, and mudflat elevations of
adjacent and cross river marsh areas. Survey of points to be completed by Lin
Associates. Data to be shown on CAD plans and provided to S &W.
Review the HEC -RAS model, USGS and NOAA gages and provide
documentation of tidal and USGS gage correlations to the project site.
Provide a characterization of tidal and river inundation stages and associated
geomorphologic and vegetation zones.
Task 2.6.2 Project existing and proposed hydraulics
A project hydraulic assessment is necessary to evaluate the project effects on floodplain
water surface elevations, which are part of permit reporting requirements, erosion
protection, bank stabilization, and slope stability design evaluation. The project existing
hydraulics will include the following tasks:
Document existing hydraulic conditions (water surface elevations,
velocities, shear stress, ramping and drawdown conditions) as obtained
from the HEC -RAS model for the following key periods:
FEMA 1% exceedance flood (confirm with King County FEMA
Flood Insurance Study and updates)
Construction season conditions
Provide a review of the hydrologic record for tidal and river inundation,
flow duration and ramping characteristics to be incorporated into the
geotechnical slope stability analysis.
Provide recommendations on channel erosion protection and bank
stabilization measures as necessary.
Deliverable:
Technical Memo Tidal Marsh hydrology, geomorphology and vegetation zones
Technical Memo Tidal Marsh hydraulics
Letter Stamped letter by engineer state that project will meet no -rise flood
requirements.
Assumptions:
The most current King County HEC -RAS model will be made available to the
project study team.
City of Tukwila will accept from the hydraulic engineer a stamped letter stating
that the project will have no -rise as it is a floodplain excavation and off -site
disposal project.
A detailed hydrologic and hydraulics report is not necessary for the design or
permitting of this project, and that the items listed above will suffice.
City of Tukwila Duwamish Garderis Scope of Work
67
Task 2 7 Civil Engineering Surveying
GHD:
1. GHD will identify both existing on -site utilities as well as utilities adjacent to the
property and coordinate with Sound Transit, City of Tukwila, and other utility service
providers.
2. GHD will confirm existing utility locations by reviewing asbuilt documents for the Sound
Transit Light Rail Project.
3. GHD will provide input into low impact development strategies for the proposed parking
stalls associated with the project and stormwater code requirements.
Deliverables:
GHD will provide a standard memorandum that may be used for additional documents
Assumptions:
GHD has design documents for the Sound Transit Light Rail Project. GHD will coordinate
with the City of Tukwila in obtaining project as- builts for the Sound Transit Light Rail
Project.
Lin Associates:
Topographic Survey.
A complete survey of the site was performed by Sound Transit in 2005, in which Lin
Associates performed the majority of the work and includes property and easement boundaries.
This survey will be used for conceptual design. Pick -up surveys will be needed to update the
basemap and /or expand the area shown to allow for final design. The survey datum will be
MLLW. Geotechnical borings and test pits will be surveyed and added to the basemap.
Deliverables:
A copy of the survey on electronic media with property and easement lines. The drawing
shall be compatible with AutoCAD and shall be one drawing file.
An ASCII file of reduced survey points including the point number, northing, easting,
and elevation based on the required horizontal and vertical control to be used.
An electronic AutoCAD file with the triangulated irregular network (TIN) of the digital
terrain model for the topographic survey and will include a copy of the Land
Development Desktop directory with files which make up the surface.
Task 3 Alternatives Design
Two alternative plans will be prepared for review by staff, stakeholders and the public. The alternative
designs will be based on the WDFW Concept Design, 213, which has been selected as the preferred
alternative from that process. Alternative designs will utilize new site analysis investigations and
information to finesse the preferred alternative to meet habitat goals, add recreational and interpretive
elements, and accommodate maintenance and security needs.
The alternatives and memorandum that were completed as part of the WDFW Concept Study will be
reviewed in order to understand previous investigations and incorporate project goals and relevant design
ideas into the alternatives design.
Taylor Associates/TEC, Inc.
Provide input via one team meeting, and in a short memo re: habitat pros /cons for each alternative
City of Tukwila Duwamish Gardens Scope of Work 10
Shannon Wilson:
Provide input via one team meeting, and in a short memo re: hydrologic hydraulic geotech/environmental
pros /cons for each alternative
GHD, Inc.:
GHD will review two alternatives and provide input towards utility impacts, drainage requirements, site
layout as it pertains to any hardscapes, grading, and construction sequencing. GHD will prepare a
memorandum that maybe used in additional project documents.
Lin Associates
Provide input via one team meeting, and in a short memo re: structural effects to light rail for each
alternative
Deliverables:
Alternatives memorandum (up to 2 pages)
Two diagrammatic alternative concept plans (24x36)
Two sections /elevations
Paragon
PRA will prepare an alternatives memorandum (up to 1 pages) re: alternative impacts /opportunities
followed by a meeting with stakeholders to discuss cultural resources concerns.
Task 4 Schematic Design
The draft and final schematic plan will reflect the preferred design as ascertained during the alternatives
design process. The schematic design will include a preliminary layout of habitat, planting, recreational,
access and interpretive features. The plan will be accompanied by other hand -drawn graphics as
described under the deliverables section below, and a written memorandum that describes habitat and
shoreline function and potential impacts or considerations related to code, cultural resources, and existing
structures.
Deliverables
Base Map
Draft Schematic Plan
Sections, up to 3
Color rendered Final Schematic Plan
Schematic Design Tech Memo (up to 4 pages)
Cost estimate (for Final Schematic Plan)
Taylor Associates/TEC, Inc.
provide input via one team meeting, and in a short memo re: habitat pros /cons
Shannon Wilson:
Provide input via one team meeting, and in a short memo re: hydrologic/hydraulic geotech/environmental
pros /cons, hydraulic engineering schematic plan and cost estimate
GHD, Inc.:
GHD will provide schematic site drainage, utility, and paving plans for selected alternative. GHD will
provide a cost estimate for the schematic design. GHD will provide a basis of design memorandum that
may be included in additional project documents.
City of Tukwila Duwamish Gardens Scope of Work 11
Lin Associates
Provide input via one team meeting, and in a short memo regarding the structural effects to light rail for
each alternative; schematic diagram showing the type protection/buffer zones that may be needed around
the existing pier.
Task 5— Public In volvement, Stakeholder Meetings and Team Meetings
This task includes involvement and preparation for meetings with the client, stakeholders and the public.
For detailed listing of the meetings, see Attachment B.
Task 6 Design Development
The design development submittal will apply technical expertise to create design solutions to schematic
design problems. JAB will create a design development submittal that will be primarily Auto -cad-
drafted; although some information may be hand drawn. Illustrative drawings will be completed as a
method to convey design feasibility and finished project character. A preliminary square- footage level
cost estimate will be provided for the design development plan.
J.A. Brennan Associates
Deliverables
Specification Outline
Product cut sheets
Plans (as outlined in attached fee proposal)
Estimate of probable construction costs
Design Development Tech Memo, updated from schematic phase (up to 6 pages)
GHD
GHD will provide Technical Drainage Report for the project. The document will be per City of Tukwila
Standards and formatted per the 2009 King County Surface Water Manual. GHD will coordinate utilities
that will be removed or abandoned. GHD will review and coordinate grading plan and provide earthwork
calculations as needed. GHD will update the basis of design memorandum that may be included in
additional project documents.
Deliverables
Technical Information Report (TIR)
Schematic Drainage Plan
Schematic Utility Plan
Schematic Paving Plan
Cost Estimate
Temporary Sediment and Erosion Plan for inland work
Shannon Wilson:
The project hydraulic and geotechnical design will include the following tasks:
Develop a construction sequencing plan, groundwater dewatering and temporary excavation
recommendations.
Lin Associates
Structural engineering— Assist the civil team with preparation of the plan and profile of the deck. Provide
tech memo to discuss possible options and costs for various alternates.
City of Tukwila Duwamish Gardens Scope of Work 12
70
Task 7— Permit Support
This task includes providing necessary permit documentation and a limited amount of coordination and
correspondence to support the client applying for federal, state and one local (county) permits. The
permit documentation includes the JARPA Application. J.A. Brennan will provide limited permit agency
coordination support, and will provide a limited amount of design changes and responses to permit review
comments. Revisions to the permit application or re- design as a result of the permit review is not
included in this contract.
Some meeting time and coordination is shared between several permit activities for efficiency. It is
assumed that this efficiency can be maintained for meetings and coordination with multiple agencies.
It is assumed that the JARPA will cover the Corps 404 permit, HPA, and 401 Water Quality Certification.
A Biological Assessment (BA) will be needed to accompany the JARPA form and graphics.
The client will provide the permit application and correspondence for the local grading and drainage
permit. J.A. Brennan will not provide a separate permit submittal drawing and specification package.
Taylor Associates /TEC, Inc.
Taylor Associates /TEC, Inc. will prepare and coordinate the following permit submittals and
approvals. It is assumed the city of Tukwila will complete state and local permits:
JARPA
USACE Letter of Permission, 404 (Dredging). The 404 is assumed to be the
Nationwide permit (NWP 27) level of effort due to past similar permitting in the
Duwamish. If an individual permit is required that would be additional scope/budget.
401 Water Quality Certification
A Biological Assessment (BA) will be prepared in a manner consistent with both the WSDOT
BA format used by the US Fish and Wildlife Service and the National Marine Fisheries Service
(the Services) and the Army Corps of Engineers Duwamish Programmatic BA.
Taylor Associates /TEC, Inc. assumes that two submittals of the report will be required, a Draft
and a Final, with minor edits to be incorporated for the Final report.
GHD
GHD will prepare the required information and documents necessary for the contractor to submit
the SWPPP for all inland work. GHD will coordinate with the design team for other work
SWPPP related items.
Deliverables (refer to attachment B)
JARPA form and graphics (4) will be prepared.
Biological Assessment Report Addendum
Task 8 Construction Documents (50% 90% and 100°0)
Construction documents will be submitted twice for client review prior to issuing final construction
documents. Submittals will be provided at 50 90% and 100% design completion. They will include
plans, specifications and estimate of probable construction costs. Specifications will be provided in CSI
format.
City of Tukwila Duwamish Gardens Scope of Work 13
71
J.A. Brennan Associates:
J.A. Brennan will provide layout, grading, planting, irrigation and associated details.
Deliverables:
JARPA Graphics (10 sheets)
Cover sheet and statistics
Existing conditions /investigation plan
Layout, grading and dredging plan
Planting plan
TESC plan
Planting details and schedule
Shoreline sections (up to 3 sheets)
Other details
Shannon Wilson:
Hydraulic Design
The project hydraulic design will include the following tasks:
Finalize erosion and bank stabilization and habitat feature designs plans and specifications.
Geotechnical design
The geotechnical engineer will develop geotechnical design plans and specifications for the following
project components:
Permanent cut slopes
Temporary construction and cut slopes
Geotechnical design parameters for foundation pile designs to be developed by the structural
engineer
Contaminated soils removal and disposal specifications
Construction dewatering performance specification (NO DESIGN)
Construction dewatering for groundwater contamination performance Specification (NOT
INCLUDED)
Contaminated Media Specification Preparation
Prepare specifications for contaminated soils handling. (to be updated)
Assumptions:
Construction dewatering performance specifications will be developed. No design of dewatering system
will be provided to the Client who therefore assumes the risk for change order claims resulting from
contractor dewatering system design and operation.
The scope of services includes a construction dewatering performance specification (no design) only.
The scope of services does not include plans and specifications for groundwater contamination treatment
and mitigation.
Deliverables:
City of Tukwila Duwamish Gardens Scope of Work 14
72
Technical Memo Hydraulic Design Plans and Specifications
Technical Memo Geotechnical Design Plans and Specifications
Technical Memo Contaminated Media Specification Sections: Sampling and Analysis, Excavation and
Handling of Contaminated Media, and Transportation and Disposal of Contaminated Soil.
GHD
GHD will update Technical Drainage Report for the project. The document will be per City of Tukwila
Standards and formatted per the 2009 King County Surface Water Manual. GHD will coordinate utilities
that will be removed or abandoned. GHD will review and coordinate grading plan and provide earthwork
calculations as needed.
Deliverables
Technical Information Report (TIR)
Drainage Plan
Utility Plan
Paving Plan
Cost Estimate
Temporary Sediment and Erosion Plan for inland work
Specifications
Lin Associates
Survey Prepare Survey Control Sheet.
Structural engineering for an approximately 20' 30' x 10'— 20' pile supported view deck. Prepare
structural details for the view deck supports per the recommendations of the Geotechnical Engineer. Civil
sheets to show plan and profile of the proposed deck.
Assumptions
Genera /Assumptions:
1. No new wetland delineation will be provided. Wetland delineation to be provided by Client. It is
assumed that no wetlands exist on site.
2. J.A. Brennan does not provide contaminated soils remediation services.
3. The client will provide coordinated, consolidated review comments at each submittal.
4. JAB will employ its own title block, sheet format and cad standards
5. It is assumed that there will be no changes to the entry road and path, or to any other elements in
the road R.O.W., therefore no Right of Way permit will be necessary.
6. NPDES Permit application is not included. It is assumed that the Contractor will provide the
NPDES.
7. Specifications will be 1994 CSI master format.
City of Tukwila Duwamish Gardens Scope of Work 15
73
8. Refer to Attachment B Fee Matrix for specific products and scope items
9. Construction support is not included in this scope of work.
10. Data review includes WDFW concept plan
11. Historic properties research is not included; it is assumed there are not designated historical sites
or buildings within the project area.
12. Shoreline Permit application not included; Critical Area analysis and permit not included.
13. City grading permit, demolition, utilities and all other City permits not included.
Optional Services
Task 2.2.7 (if necessary) Site Form addendum
If additional cultural deposits are identified, PRA will prepare a site form addendum including updated
site boundary maps. The site form addendum will be appended to one of the deliverables (tbd). If further
subsurface investigations are planned, preparation of the site form addendum may be deferred for
efficiency, however PRA will prepare site maps for use by design team members in the interim.
Task 2.2.8 (if necessary) Tesfing/Data Recovery Plan
PRA will prepare a testing or data recovery plan that will outline the methodology and research questions
that would be addressed during a testing or data recovery effort. This document would require review and
approval from stakeholders. Additional meetings may be necessary to finalize the plan; one meeting is
included in time estimates.
City of Tukwila Duwamish Gardens Scope of Work
16
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City O Tukwila
Community Affairs and Parks Committee
COMMUNITY AFFAIRS AND PARKS COMMITTEE
Meeting Minutes
December 12, 2011 5:00 p.m.; Conference Room #3
PRESENT
Councilmembers: Verna Seal, Chair; Joe Duffie and De'Sean
Staff: Evie Boykan, Bob Giberson, Ryan Larson, Jack Pace, David Cline and Kimberly Matei
CALL TO ORDER: Committee Chair Seal called the meeting to order at 5:02 p.m.
I. PRESENTATIONS
No presentations.
II. BUSINESS AGENDA
A. Interlocal Agreement: Joint Minor Home Re Program
Grant monies are pending appropriation fqr the 2012 Minor Home Repair Program through the Community
Development Block Grant, and staff is seeking approval to enter into an Interlocal Agreement between the
Cities of SeaTac, Des Moines, Covington, Pacific and Tukwila for the planning, funding and implementation
of a joint minor home repair program in 2012.
Last year this interlocal agreement was between the cities of Seatac, Des Moines, Covington and Tukwila and
was going to be self- renewing; however, the City of Pacific has now been added to the program, and a new
interlocal agreement is necessary.
Tukwila continues to serve as the fiscal agent of the Minor Home Repair Program for the above mentioned
cities. Targeting low and moderate income homeowners, Minor Home Repair program repairs include
electrical, plumbing, carpentry, roofing and painting (lead removal).
Terms of the interlocal agreement are almost identical to last year, with the exception that the City of Pacific
has been added as a participant. UNANIMOUS APPROVAL. FORWARD TO JANUARY 9, 2012, COW.
B. Duwamish Gardens: Grant Funds and Consultant Agreement.
Staff is seeking Council approval of the following items regarding Duwamish Gardens:
Acceptance of Grant Funds
In late 2010, grant monies were accepted from the Washington State Recreation and Conservation Office
(RCO) and the King Conservation District for design on Duwamish Gardens. Staff identified the need for
additional design phase funding and contacted RCO to inquiry about the availability of additional grant
monies. The RCO awarded the City another $50,045 for the project, and staff is now requesting an
amendment to the current grant agreement in order to accept this new grant funding. The required matching
funds were previously budgeted during the original grant acceptance. UNANIMOUS APPROVAL.
FORWARD TO JANUARY 9, 2012, COW FOR DISCUSSION.
Consultant Selection and Agreement
Staff is seeking approval to enter into a consultant agreement with JA Brennan Associates in the amount of
$316,066 for design of the Duwamish Gardens Project.
JA Brennan was chosen after a competitive process from nine original RFP submissions. The consultant
agreement calls for 100% design of the project including plans, specifications and a detailed ecological
recovery plan. UNANIMOUS APPROVAL. FORWARD TO JANUARY 9, 2012, COW FOR
DISCUSSION.
79