HomeMy WebLinkAboutUtilities 2014-06-02 Item 2A - Contract Supplement #3 - East Marginal Way South Storm Pipe Replacement with KPG IncTO:
FROM:
By:
DATE:
SUBJECT:
City of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
Mayor Haggerton
Utilities Committee
Bob Giberson, Public Works Director
Ryan Larson, Senior Program Manager
May 30, 2014
East Marginal Way S Storm Pipe Replacement
Project No. 91241206, Contract No. 13 -036
Supplemental Agreement No. 3
ISSUE
Approve Supplemental Agreement No. 3 to Contract No. 13 -036 with KPG, Inc.
BACKGROUND
KPG's Consultant Agreement No. 13 -036 consists of developing project plans,
specifications, and estimate for the East Marginal Way S Storm Pipe Replacement Project.
The replacement pipe was anticipated to be constructed along the existing pipe alignment.
Geotechnical work for the design determined that petroleum, creosote, and cement kiln
dust are present along this alignment due to adjacent land uses. In addition, extensive
utility relocations would be required due to newer utility installations along and above the
pipe alignment. To reduce overall project costs and utility disruptions, an alternate
alignment within the roadway was explored and selected.
ANALYSIS
The change in pipe alignment required additional geotechnical, surveying, utility potholing,
and design work that were not included in the design contract. The new alignment will
reduce construction costs of the project by allowing the existing pipe to be used during
construction which eliminates the bypass pumping, avoids the majority of contaminated
soils, and reduces utility conflicts.
FISCAL IMPACT
Supplement No. 3 is for $45,985.87, bringing the total cost for the design contract as
supplemented to $223,439.76. A total of $238,000 is available in design funding.
RECOMMENDATION
Council is being asked to approve Supplemental Agreement No. 3 with KPG, Inc. in the
amount of $45,985.87 for design of the East Marginal Way Pipe Replacement Project and
consider this item on the Consent Agenda at the June 16, 2014 Regular Meeting.
Attachments: Page 85, 2014 CIP
Supplemental Agreement No. 3
W: \PW Eng \ PROJECTS \A- DR Projects \EMWS Emergency Storm Pipe Repair 11 -19 -12 (91241206)\ Design \Info Memo KPG Suplement 3 FINAL.docx
1
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2014 to 2019
PROJECT: East Marginal Wy S Storm Pipe Replacement Project No. 91341201
DESCRIPTION: Replace a failing 30" - 36" CMP storm pipe between S 120th PI S and S 126th St.
The existing storm pipe is failing in several sections and has reached the end of its serviceable life.
JUSTIFICATION: The pipe has failed in several locations requiring spot repairs. Failure of the pipe will lead to localized
flooding and property damage.
STATUS: New project for 2014 - 2019 CIP. Project design began in 2012 as part of the EMWS Emergency Repair
11 -19 -12 Project. Construction is anticipated to begin in 2014.
MAINT. IMPACT: Reduce future maintenance and emergency repairs of existing failing pipe.
COMMENT: The storm pipe is a reach of Southgate Creek and will require both an HPA and construction within
a fish window timeframe. Existing utilities within EMWS will also require relocation.
FINANCIAL Through Estimated
(in $000's)
2012 2013 2014
2015
2016
2017
2018
2019
BEYOND TOTAL
EXPENSES
Design
188
50
238
Land (RAN)
0
Const. Mgmt.
300
300
Construction
62
2,000
2,062
TOTAL EXPENSES
62
188
2,350
0
0
0
0
0
0
2,600
FUND SOURCES
Awarded Grant
0
Proposed Grant
0
Mitigation Actual
0
Mitigation Expected
0
Utility Revenue
62
188
2,350
0
0
0
0
0
0
2,600
TOTAL SOURCES
62
188
2,350
0
0
0
0
0
0
2,600
2014 - 2019 Capital Improvement Program
85
2
SUPPLEMENTAL AGREEMENT NO. 3
AGREEMENT NO. 13-036
PROJECT No. 91241206
City of Tukwila
Public Works Department
6300 Southcenter Boulevard #100
Tukwila, WA 98188
KPG, Inc.
753 - 9th Avenue N.
Seattle, WA 98109
PROJECT: E. Marginal Way Stormwater Pipe Repairs - Additional Field Investigations
This SUPPLEMENTAL AGREEMENT NO, 3 is to supplement the agreement entered into with KPG,
Inc. and the City of Tukwila, which was executed on the 5th day of February, 2013.
All provisions in the basic agreement remain in effect, except as expressly modified as follows:
Article 2, Scope of Services, shall be supplemented with the following:
The Consultant agrees to provide additional field investigations and final design services in accordance
with the scope of work included as Exhibit A.
Article 4, Payment, shall be modified as follows:
Payment for work provided by Consultant shall be made as provided on Exhibit B, attached hereto,
provided that the total amount ofpayment to the Consultant for this work not exceed $45,985.87 without
express written modification of the Agreement signed by the City. The new total contract shall not exceed
$223,439.76 without express written modification of the Agreement signed by the City
IN WITNESS WHEREOF, the parties hereto have set their hands and seals this day
of , 2014.
APPROVED: APPROVED:
CITY OF TUKWILA KPG,
Jim Haggerton Nels n vis, P.E.
Mayor Principal
Attested:
Christy O'Flaherty, City Clerk
3
EXHIBIT A
City of Tukwila
E. Marginal Way S.
Emergency Stormwater Pipe Repairs
Supplement No. 3
Additional Field Investigations
Scope of Work
May 8, 2014
PURPOSE:
This purpose of this supplement is to perform additional field investigations in support of
final design and cost estimating for replacement of an aging 36 -inch stormwater pipe
along E. Marginal Way S. between approximately 12500 and S 120th Place. The
original design approach anticipated replacement of the storm drain in approximately
the same alignment; however, utility potholing and geotechnical investigations along the
existing alignment revealed a number of issues. Specifically:
• Soil contamination (petroleum, creosote, cement kiln dust) from adjacent land
uses.
• Groundwater contamination.
• Extensive utility relocation needs due to newer utility installations along and
above the deeper pipe alignment.
An alternate alignment was determined to minimize utility interference and reduce risks
associated with contaminated soil and groundwater by shifting the storm pipe further
away from suspected sources of contamination where feasible. This supplement
provides for necessary geotechnical review, dewatering considerations, contaminated
soil and groundwater sampling, utility potholing, franchise utility coordination and
preparation of a Contaminated Media Management Plan (CMMP) in support the
alternate alignment. The work also includes application for a King County Industrial
Waste Permit for potential discharge of dewatering systems.
City of Tukwila KPG
EMW Storm Additional field investigations Page 1 of 4 May 8, 2014
4
SCOPE OF WORK:
Task 1 — Management, Coordination & Administration
1.1 No additional work necessary on this task.
Task 2 — Field Investigations
2.1 The Consultant shall coordinate geotechnical review to provide additional
subsurface information along the revised alignment and recommended aquifer
parameters based on in situ testing that will support the selection and design of
dewatering systems by the Contractor. Geotechnical review will be performed by
GeoDesign under subcontract to the Consultant and will include the following
work:
• Select/revise proposed boring locations and coordinate and manage the field
investigation, including obtaining a street -use right -of -way permit from the
City. A street -use right -of -way application is required along with a proposed
traffic control plan.
• Mark boring locations and request public utility locates. A separate trip to the
site will be necessary to mark the boring locations in order to get the utility
locates completed, to evaluate traffic control requirements, and to identify
which bus stops may be impacted or parking spots that will need to be closed
during the field work. The traffic control plan and identification of parking
spots or driveways that will need to be blocked off during the drilling and
anticipated work hours will be provided in the traffic control plan submitted
with the right -of -way permit application.
• Explore subsurface conditions by completing up to three additional soil
borings along the new alignment. The borings will be completed to a depth of
approximately 20 feet, or less if bedrock is encountered.
• Complete laboratory analyses on disturbed soil samples obtained from the
explorations to assist in soil classification and evaluating engineering
parameters. Testing may include up to nine moisture content determinations
and six grain -size distribution tests.
• Perform slug tests in Phase I borings B -1, B -3, and B -5. Slug tests will
provide information of aquifer permeability and support estimating aquifer
storativity. The wells in each of the three borings are in slightly different soil
City of Tukwila KPG
EMW Storm Additional field investigations Page 2 of 4 May 8, 2014
5
conditions, which will provide information on the variability of the aquifer
parameters.
• Prepare a geotechnical memorandum to summarize the subsurface
conditions and in situ testing completed during the field investigation. The
information developed during the Phase II investigation will then be included
in the final version of the geotechnical report for the project.
2.2The Consultant shall prepare a Contaminated Media Management Plan (CMMP)
to provide information regarding proper procedures and field protocol to address
cement kiln dust and petroleum- impacted soil and groundwater at the site. The
CMMP will discuss proper detection, handling, and management of petroleum -
contaminated soil encountered during construction activities. The CMMP will be
made available to the bidding contractors as an appendix to the specifications.
The CMMP will not include a Health and Safety Plan for the contractor; we
assume the contractor will prepare and implement a site - specific Hazard
Communication Plan based on the conditions described in the contract
documents and revised as necessary based on conditions actually encountered.
Preparation of the CMMP will be performed by GeoDesign under subcontract to
the Consultant.
2.3The Consultant shall prepare a supplemental potholing plan and coordinate field
potholing of utilities in the vicinity of the new pipe alignment. Potholing will be
performed by Bravo Environmental Services under subcontract to the Consultant.
Task 3 — Survey and Right of Way
3.1 The Consultant shall pick up all potholes and boring locations identified in Task
2. All information will be incorporated into the project base maps.
Task 4 — Prepare Final Plans, Specifications, and Estimates
4.1 The Consultant shall coordinate with King County Water District 125 for
incorporation of necessary water relocations into the project bid documents. WD
125 work will be included as a separate bid schedule in the bid documents.
4.2 The Consultant shall coordinate with Valley View Sewer District for incorporation
of necessary sewer force main relocation into the project bid documents. WSD
work will be included as a separate bid schedule in the bid documents.
City of Tukwila KPG
EMW Storm Additional field investigations Page 3 of 4 May 8, 2014
6
Task 5 — Permitting
5.1 The Consultant shall apply for a King County Industrial Waste Discharge Permit
to allow discharge from dewatering system(s) into the sanitary sewer. It is
anticipated that the permit will be issued to the City for use by the Contractor.
ADDITIONAL SERVICES:
The City of Tukwila may require other services of the consultant. These services could
include additional design, right of way, environmental documentation, construction
phase services, or other work tasks not included in the scope of work. At the time these
services are required, the Consultant will provide the City with a detailed scope of work
and an hour and fee estimate. The Consultant will not proceed with the work until the
City has authorized the work and issued a Notice to Proceed.
DELIVERABLES
• Final Geotechnical Report.
• Contaminated Media Management Plan
• King County Industrial Waste Discharge Permit application
City of Tukwila KPG
EMW Storm Additional field investigations Page 4 of 4 May 8, 2014
7
HOUR AND FEE ESTIMATE
Project: City of Tukwila
E. Marginal Way S.
Stormwater Pipe Repairs
Supplement No. 3 - Additional Field Investigations
EXHIBIT B
KPG
• Architecture •
Landscape Architecture
• Civil Engineering •
Task
Description
Labor Hour Estimate
Total Fee
Project
Manager
$ 165.00
Senior
Engineer
$ 143.58
Project
Engineer
$ 118.85
Design
Engineer
$ 100.49
CAD
Technician
$ 83.65
Const
Inspector
$ 99.29
Survey
Crew
$ 139.01
Senior
Admin
$ 100.49
Office
Admin
$ 58.11
Fee
Task 1 - Management, Coordination, Administration
1.1 No additional management and admin required
Reimbursable - Reproduction
Task Total
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Task 2 - Field Investigations
2.1 Coordinate additional geotechnical investigations
1
0
4
0
0
0
0
0
2
$ 756.64
2.2 Coordinate preparation of CMMP
2
0
8
0
0
0
0
0
2
$ 1,397.06
2.3 Prepare potholing plan and coordinate potholing
1
0
2
0
0
0
0
0
2
$ 518.93
Reimbursable - Geotechnical (GeoDesign)
$ 18,000.00
Reimbursable - CMMP (GeoDesign)
$ 8,990.00
Reimbursable - Potholing allowance (Bravo)
$ 9,000.00
Task Total
4
0
14
0
0
0
0
0
6
$ 38,662.63
Task 3- Survey and Right of Way
3.1 Additional topographic survey and pothole pickups
Task Total
0
0
0
2
0
0
4
0
0
757.03
0
0
0
2
0
0
4
0
0
$
757.03
Task 4 - Prepare Final Plans, Specifications, and Estimate
4.1 Coordinate with WD 125 for water relocation
4.2 Coordinate with WSD for sewer FM relocation
Task Total
2
0
12
8
4
0
0
0
2
2
0
8
4
4
0
0
0
2
4
0
20
12
8
0
0
0
4
$ 3,010.97
$ 2,133.60
5,144.57
Task 5 - Permittin
5.1 Prepare and submit KCIW discharge permit app
2
0
4
0
0
0
0
0
2
$ 921.64
Reimbursable - GeoDesign permit assistance
$ 500.00
Task Total
2
0
4
0
0
0
0
0
2
$ 1,421.64
5/10/2014
0o
Supplemental Authorization amount: $ 46,985.87