HomeMy WebLinkAboutTIC 2020-03-02 Item 2B - Contract Amendment #5 - Riverton Creek Flapgate Removal Project Design with OTAKCity of Tukwila Allan Ekberg, Mayor
Public Works Department - Henry Hash, Director
INFORMATIONAL MEMORANDUM
TO: Transportation and Infrastructure Committee
FROM: Henry Hash, Public Works Director,/�,
BY: Mike Perfetti, Habitat Project Manager
CC: Mayor Ekberg
DATE: February 28, 2020
SUBJECT: Surface Water Fund - Riverton Creek Flap Gate Removal Proiect
Project Number 99830103
Contract 17-070, Amendment No. 5
ISSUE
Approve Amendment No. 5 to Contract No. 17-070 with OTAK, Inc. for extra services and a time extension.
BACKGROUND
In May 2017, the City entered into a consultant agreement with OTAK for design and permitting services for the Riverton Creek
Flap Gate Removal Project. This project will improve habitat conditions and increase salmonid accessibility to rearing habitat in
Riverton Creek by removing two culverts and flap gates at the mouth of the creek and replacing a section of at -grade trail with a
bridge over the restored open channel.
DISCUSSION
OTAK is nearing their contract expiration date and has expended approximately 99% of its budget with the following extra services
needed to complete the design and obtain required permits:
• Additional permit support — The City, with limited support from OTAK, submitted the required JARPA and WSDOT permit
applications. However, the City has received a considerable amount of technical comments, and has had to utilize, and
will continue to need, OTAK's multi -disciplinary expertise to coordinate with agencies and resolve permit comments.
• Final design — This task is being amended primarily to enable design modifications in response to agency comments.
The main changes pertain to the following: Tribal in -stream habitat comments related to the boulder drop structure,
channel grading, and the large wood structures; WSDOT's structural and site -related comments, including additional
reinforcement of the SR 599 sheet pile wall and modifications to the soldier pile wall on the right bank of the creek.
• Geotechnical investigations — GeoEngineers, OTAK's subconsultant, will perform two additional borings along the right
bank soldier pile wall.
• Bid support services — New task
• Contingency — A $15,000 management reserve contingency is included in the event that limited and pre -authorized
additional services may be required.
FISCAL IMPACT
Amendment No. 5 is for $98,112.00, bringing the total contract amount to $318,452,00, and a one-year contract extension to April
30,2021. To fund Amendment No. 5, the project will utilize the remaining design budget. A portion of these funds are eligible for
grant reimbursement.
Agreement Budget Amt Amount Spent Amount Available
Current OTAK Contract $220,340.00 $344,000.00 $218,487.25 $123,660.00
OTAK Amendment No. 5 $98,112.00
$U 452.00
RECOMMENDATION
The Council is being asked to approve Amendment No. 5 with OTAK, Inc. for the Riverton Creek Flap Gate Removal Project in the
amount of $98,112.00 including a one-year time extension and consider this item at the March 16, 2020 Regular Meeting Consent
Agenda.
Attachments: OTAK Supplemental Agreement No. 4 (2 copies)
2019-24 CIP p. 93
W.TW Eng10THERIFORMS101 TIC Items & AgendasUIC Agenda IlemslTIC 03-02-202M00 Riverton Creek Flapgale Amendment_ Well* Memo Olak PE Amend #5_20200228.docz
. . 0City of Tukwila Agreement Number: 17-070
6200 Southcenter Boulevard, Tukwila WA 98188
10101kikIXITAiY07:*94ZITAIN*I
Amendment #5
Between the City of Tukwila and OTAK, Inc.
That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby
amended as follows:
Section 1: Scope of Services. Work under this contract shall be amended to include
reimbursement for direct expenses and costs associated with the additional contract scope
of services as described in Exhibit A-5, attached.
Section 3. Duration of Agreement; Time for Performance. This Agreement shall be in full
force and effect for a period commencing upon execution and ending April 30, 2021, unless
sooner terminated under the provisions hereinafter specified. Work under this Agreement
shall commence upon 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
no later than April 30, 2021 unless an extension of such time is granted in writing by the City.
Section 4: Payment. Payment is hereby changed to include an additional $98,112.00 for this
additional scope of services. See Exhibit B-5. The maximum amount payable under this
contract as amended inclusive of all fees and other costs shall not exceed $318,452.00
without express written modifications of the Agreement signed by the City.
All other provisions of the contract shall remain in full force and effect.
Dated this
CITY OF TUKWILA
Allan Ekberg, Mayor
day of
ATTEST/AUTHENTICATED
Christy O'Flaherty, MMC, City Clerk
2020.
CONTRACTOR
Printed Name:
APPROVED AS TO FORM
Office of the City Attorney
CA Revised December 2016 Page I of I
Exhibit A-5
Scope of Work
Riverton Creek Flapgate Removal Project
City of Tukwila
February 6, 2020
Otak Project No. 32740
Amendment No. 5
The City has received comments from granting agencies, permitting agencies, and other stakeholders
on the design for the Riverton Creek Flapgate Removal Project. At the request of the City, Otak
provided support to provide responses and to modify the design as necessary to address the
comments. A monitoring plan and a JARPA major modification have also been requested.
In addition, Otak's geotechnical subconsultant has reviewed the revised channel design and they are
recommending a second row of tiebacks in the existing west sheet pile wall. The additional tiebacks
will also address comment from WSDOT. Additional boring investigations were also recommended
to determine soil conditions supporting the proposed east soldier pile wall.
This scope provides additional services to incorporate the changes and additions into the current
design and then advance the design to final bid documents for construction in 2020.
The following table provides a summary of the contract value for the project as modified by
Amendment No. 5.
Contract
Authorized
Fee
Original Contract
$105,363.00
Amendment No. 1
$39,993.00
Amendment No. 2
$37,064.00
Amendment No. 3
$0.00
Amendment No. 4
$37,920.00
Amendment No. 5
$98,112.00
Total
$318,452
Exhibit A-5 Scope of Work
Continued
Scope and Budget Modifications
Task I — Project Management
The scope for this task is increased to provide project management and coordination for an
extended project schedule for anticipated construction in 2020. This includes additional services for
regular status update meetings with the City, project management, and preparation of project reports
and invoices.
Task 4 — Permitting, Environmental Review and Coordination
4.1 JARPA Preparation
Otak will update the JARPA electronic drawing package initially prepared by the City including
overall formatting and adjustment of scales and labels to comply with application requirements.
The Washington Department of Fish and Wildlife (WDFW) has requested a Major Modification to
the original JARPA to incorporate design revisions made to address comments from the Army
Corps of Engineers (ACOE) and Muckleshoot Indian Tribe (MIT). Otak will update the electronic
JARPA drawing package with these design revisions and provide and electronic (.pdf package.
The City will prepare the Major Modification Form.
4.7 Permitting Support
The level of effort originally estimated for developing response to permitting agency comments has
been exceeded based on the comments received. The Task 4.7 scope is increased to provide
additional services for continued permitting support.
Otak will review email correspondence with multiple permitting agencies and will participate in
additional meetings with the City to review agency comments and discuss potential revisions to the
design as necessary. Otak will provide written email responses to Department of Natural Resources
(DNR) and the Muckleshoot Indian Tribe (MIT) to provide basis of design information and revised
drawings to demonstrate how comments have been addressed.
Otak will provide additional services to support the permitting process with WSDOT include
reviewing comments and providing written responses as requested by the City.
4.8 Monitoring Plan (New)
In response to MIT comments, this task provides details for providing a stream and fish passage
monitoring plan for a tidal flapgate and culvert removal and pedestrian bridge installation project on
K:\project\32700\32740\Contract\AMENDMENT 5\Riverton SOW —Amend 5_2020_0206.docx 2 10
Exhibit A-5 Scope of Work
Continued
Riverton Creek, in the City of Tukwila, King County, Washington. The WDFW and ACOE require
monitoring for culvert replacements with bridge structures and stream modifications to document
proper conditions for fish passage.
This task involves preparation of a culvert and stream monitoring plan based on guidance from
WDFW protocols for monitoring bridge installation and design from the Water Crossing Design
Guidelines (WDFW 2013). Monitoring plan elements will include fish passage data collection:
photographs of the pedestrian bridge and the surrounding banks, qualitative descriptive information,
and the physical measurements for the bridge and nearby streambeds recommended by WDFW.
The monitoring plan will include performance standards for bridge design and function and nearby
streambeds appropriate to the project and the stream systems.
This task includes coordination with the City, WDFW, and the ACOE. This task will also include
coordinating with regulatory agencies and tribal representatives on culvert and stream monitoring
planning, goals, objectives, and plan specifics as needed.
Assumptions:
• Wetland mitigation and monitoring planning is not included in this scope.
• Wetland buffer mitigation and monitoring planning is not included in this scope.
• The culvert and stream monitoring plan will not include riparian or wetland planting plans.
• If needed, up to two (2) two-hour meetings with the City, WDFW, ACOE, and tribal
representatives may be included in this task.
Task 5 — Final Design
The Task 5 work assumes that there will only be one -round of revisions to address WSDOT
comments. If further revisions are required, an amendment will be submitted for authorization of
contingency funds to address the comments.
5.1 Final Design and Plan Sheets
The following changes to the final design and plans will be incorporated at the 90%, 100%, and final
bid document stages.
4 Creek Grading, Trail Restoration, and Bank Armoring Design
Otak will revise the plans and details to address comments from permitting agencies regarding
reducing the boulder drop structure height, adjusting the channel profile and grading, and the
size of the logs for woody debris structures.
Otak will update the structural calculations to incorporate the final geotechnical report
recommendations and design data for submittal to WSDOT.
K:\project\32700\32740\Contract\AMENDMENT 5\Riverton SOW —Amend 5_2020_0206.docx 3 11
Exhibit A-5 Scope of Work
Continued
6 Retaining Wall Design
Otak will review the geotechnical soils data and recommendations for the east soldier pile wall
that will be provided by the geotechnical subconsultant after supplemental explorations under
Task 7. Otak will update structural calculations based on the soil properties at the location of
the wall. The assumption is that the geotechnical findings and recommendations will require
adjusting the pile length by up to 2'. Further revisions to the east soldier pile wall design, such as
an increase in pile depth over 2' or the addition of tiebacks will require additional services and an
amendment will be prepared to authorize contingency funds if requested by the City.
5.2 Specifications
Otak will revise the Division 2-9 Special Provisions and details to address comments from
permitting agencies regarding reducing the size of the logs for woody debris structures.
Otak will also prepare special provisions for verifying the existing sheet pile wall depth per WSDOT
comments.
5.3 Construction Cost Estimates
Otak will revise the quantities and cost estimate to address comments from permitting agencies
regarding reducing the boulder drop structure height, adjusting the channel profile and grading, and
the size of the logs for woody debris structures.
Otak will add construction cost information for verifying the existing sheet pile wall depth per
WSDOT comments.
5.4 Preparation of the Contract Manual (New)
Per Amendment No. 1 scope, The City would be preparing the master Contract Manual including
Division 1 of the Special Provisions. Otak would only prepare Special Provisions for Divisions 2-9
under Task 5.2 to be incorporated in the manual by the City.
This Amendment No. 5 scope adds new Task 5.4 for Otak to prepare the master Contract Manual
including all Contract and Bid Forms, Amendments to the WSDOT Standard Specifications, and
Appendices. Otak will incorporate Special Provisions provided by the City for items designed by
the City such as the landscaping work. The City will provide current boilerplate Division 1 special
provisions and bid form electronic files (.doc) that Otak will update and fill in information for this
project. The City will also provide all permits to be included in the appendices.
Otak will submit the Contract Manual to the City for review at the 90%, 100%, and final bid
document stages.
K:\project\32700\32740\Contract\AMENDMENT 5\Riverton SOW —Amend 5_2020_0206.docx 412
Exhibit A-5 Scope of Work
Continued
Otak will provide the final version of the Contract Manual for bid advertisement.
Task 7 — Geotechnical Analysis
This task includes a geotechnical evaluation by GeoEngineers, a subconsultant to Otak. Previous
work under Phase 1 and 2 included review of existing data, explorations for the bridge foundation
design, and preparation of a final geotechnical report with recommendations for the proposed
project improvements.
This contract amendment includes scope and fee estimate for additional services to complete Phase
2 of the project. Our specific scope of additional services is presented below.
7.2 Supplementary Borings and Report Amendment (New)
Prepare a draft and final amendment to geotechnical design report for the proposed east soldier pile
wall. Our specific scope of services for the design -level report amendment will include the following:
• Project vicinity map and site plan showing the location of the geotechnical exploration
with
• Summary of subsurface soil and groundwater conditions.
• Seismic design recommendations based on the current International Building Code
(IBC).
• Design recommendations for the proposed soldier pile wall
7.3. Design and Permitting Support (New)
Provide additional consultation to the design team including reviewing the plans and specifications
for conformance to our geotechnical recommendations. If requested, this may also include
developing responses to contractor questions during bidding.
Provide review of comments from permitting agencies pertaining to the geotechnical analysis and
provide written responses.
Task 8 — Advertisement and Bid Support Services
Otak will provide responses to bidders' questions and assistance to the City, including:
1. Support for Bid Advertisement
2. Attend bid opening
3. Respond to contractor questions
4. Interpretation of contract documents during the bidding process.
5. Preparing addenda to the bid documents.
The City will coordinate the postings for bid advertisement.
K:\project\32700\32740\Contract\AMENDMENT 5\Riverton SOW —Amend 5_2020_0206.docx 5 13
Exhibit A-5 Scope of Work
Continued
Direct Expenses
Additional Reproduction costs for Final Contract Manual and Plans
Management Reserve Contingency
If directed by the City, consultant will provide services needed to assist the City for unforeseen tasks related to this
project that were not specfcalyaddressed in this scope of work. When requested by the City, the consultant will
provide a scope and budget for the task identified by the City. The consultant will not proceed with the task until
written authorization has been provided by the City. The allotted amount for this task is ,$15, 000.
Optional Task 9 - Construction Engineering Support Services (New)
Construction engineering support services may be provided through this contract for the Riverton
Creek Flapgate Removal, if requested by City of Tukwila. If requested, Otak and/or GeoEngineers
will provide a more detailed scope and level of effort (LOE) for a Supplement.
The engineering services during construction will address RFI responses, submittal review, site
observation, construction meeting support, record drawing preparation, and other engineering
construction services.
K:\project\32700\32740\Contract\AMENDMENT 5\Riverton SOW —Amend 5_2020_0206.docx 6 14
Exhibit B-5 - Fee Estimate
City of Tukwila - Riverton Creek Flapgate Removal Project
Otak, Inc., Project 32740
AMENDMENT NO. 5, February 6, 2020
Task Description
Proj. Mgmt./Design
QA/QC
Structural
Environmental
Water
Resource
CADD
Admin
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Task 1
Project Management
2
16
8
26
$ 3,837
$ 3,837
1.1
Project Management and Coordination
2
16
8
26
$3,837
Task 4
Permitting, Environmental Review and Coordination
26
12
20
24
32
20
6
140
$ 16,588
$ 16,588
4.1
JARPA Preparation
6
4
6
8
6
30
$3,736
4.7
Permitting Support
18
8
14
8
12
60
$8,381
4.8
Monitoring Plan
2
16
32
1
50
$4,471
Task 5
Final Design
4
64
14
48
58
4
69
16
26
303
$ 40,749
$ 40,749
5.1
Final Design and Plan Sheets
1. 90% Plans
4
20
20
40
2
40
12
138
$17,929
2. 100% Plans
2
2
4
4
12
$1,461
3. Final PSE Bid Set
2
2
4
8
$1,138
5.2
Specifications
1. 90% Specs
16
4
8
2
2
9
2
43
$6,418
2. 100% Specs
2
2
2
6
$857
3. Final PSE Bid Set
5.3
Construction Cost Estimates
1. 90% Cost Estimate
6
4
4
8
22
$3,020
2. 100% Cost Estimate
2
2
4
$677
3. Final PSE Bid Set
5.4
Contract Manual
1. 90% Contract Manual
8
8
8
4
8
8
44
$6,200
2. 100% Contract Manual
4
4
8
16
$1,819
3. Final Contract Manual
2
2
6
10
$1,230
Task 7
Geotechnical Analysis
11L-
$ -
$17,000
$ 17,000
7.2
Supplementary Borings and Report Amendment
$13,000
7.3
Design and Permitting Suppport
$4,000
Task 8
Advertisement and Bid Support Services
10
2
6
4
4
2
4
32
$ 4,638
$ 4,638
Project Total Hours
6
116
16
66
82
32
32
91
22
38
501
Billing Rate (including OH and Profit)
$234.60
$165.53
$179.92
$172.72
$115.15
$136.74
$61.00
$109.40
$80.84
$89.82
Total Labor Cost, including Overhead and Profit
$ 1,408
$ 19,202
$ 2,879
$ 11,400
$ 9,443
$ 4,376
$ 1,952
$ 9,956
$ 1,779
$ 3,414
$ 65,812
$ 17,000
$ 82,812
Direct Expenses
$ 300
$ 300
Management Reserve Contingency
$ 15,000
Project Total (Amendment No. 5)
$ 98.112
K:\project\32700\32740\Contract\AMENDMENT 5\Riverton Fee Est -Amend 5_2020_0206.xlsx 15
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2019 to 2024
PROJECT:
Riverton Creek Flap Gate Removal Project No. 99830103
Remove two culverts and flap gates at Duwamish River; install pipe arch, create open channel
DESCRIPTION:
confluence, install trail bridge over new channel, restore/revegetate 200 feet of creek channel and
450 ft. of pond shoreline.
JUSTIFICATION:
Increase available salmonid rearing habitat and increase flood refuge in lower Duwamish River.
Improve fish access to Riverton Creek and enhance salmon rearing and resting area.
STATUS:
Design underway in 2018. Construction grant of $846k from WA State RCO.
MAINT. IMPACT:
Expected to increase maintenance.
COMMENT:
Project used as mitigation for East Marginal Way Pipe Replacement Project and HPA
Control #133763-1 requires work to be completed by June 11, 2019, which will need to be extended.
FINANCIAL Through Estimated
(in $000'sl 2017 2018 2019 2020 2021 2022 2023 2024 BEYOND TOTAL
EXPENSES
Design
204
100
40
344
Land (R/W)
0
Monitoring
15
15
15
15
15
15
90
Const. Mgmt.
184
184
Construction
918
918
TOTAL EXPENSES
204
1 100
1 1,142
1 15
15
15
15
15
15
1,536
FUND SOURCES
Awarded Grant
72
847
919
Proposed Grant
0
Mitigation Actual
0
Mitigation Expected
0
Utility Revenue
132
100
295
15
15
15
15
15
15
617
TOTAL SOURCES
204
100
1,142
15
15
15
15
15
15
1,536
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$ 128 ' '0
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2019 - 2024 Capital Improvement Program 93 16