HomeMy WebLinkAboutCOW 2009-09-28 Item 6H - Contract Amendment - 10% Remaining Design for Southcenter Parkway Extension with David Evans and Associates COUNCIL AGENDA SYNOPSIS
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ITEM INFORMATION
i CAS NUMBER: 09-139 I ORIGINAL AGENDA DAIL: SEPTEMBER 28, 2009
AGENDA ITEM TITLE Authorize the Mayor to sign an amendment to Contract 04 -025 (H) with David Evans
Associates (DEA) to complete the 10% remaining design work for Southcenter
Parkway Extension
CATEGORY Discussion Motion Resolution Ordinance Bid Award Public Hearing Other
Mtg Date 9/28/09 Mtg Date 10/05/09 Mtg Date Mtg Date Mtg Date Mtg Date Mtg Date
SPONSOR Council Mayor Adm Svcs DCD Finance Fire Legal P&7'R Police PW
SPONSOR'S The scope of work for the contract amendment includes items needed to complete the last
SUMMARY 10% of the design work, including removal of S 178th Street and removal of the bike
lanes. The cost is $378,680. The estimate of $300,000 and this figure was included in
Section 4.3.1 of the Development Agreement. Since then costs have increased as the
necessary scope of work has changed. La Pianta has agreed that the additional $78,680
may come from grant funds as well.
REVIEWED BY COW Mtg. CA &P Cmte F &S Cmte Transportation Cmte
Utilities Cmte Arts Comm. Parks Comm. Planning Comm.
DATE: Tukwila South; no committee review
RECOMMENDATIONS:
SPONSOR /ADMIN. Mayor's Office
COMMI T'I'
COST IMPACT FUND SOURCE
EXPENDITURE REQUIRED AMOUNT BUDGETED APPROPRIATION REQUIRED
Fund Source:
Comments:
1 MTG. DATE RECORD OF COUNCIL ACTION
09/28/09
10/05/09
MTG. DATE ATTACHMENTS
9/28/09 Informational Memorandum dated 9/28/09
WSDOT contract amendment cover form for contract 04 -025, 8 supplement
1 DEA scope of work for contract amendment 04 -025, labeled Exhibit B -2, 8 supplement
10/05/09
1
TO:
City of Tukwila
INFORMATIONAL MEMORANDUM
Mayor Haggerton
Committee of the Whole
FROM: Lisa Verner, Mayor's Office
DATE: September 28, 2009
SUBJECT: Tukwila South Southcenter Parkway Extension Design Contract
Amendment 04- 025(H)
ISSUE
Authorize the Mayor to sign an amendment to Contract 04 -025 (H) with David Evans
Associates (DEA) to complete the 10% remaining design work for Southcenter Parkway
Extension
BACKGROUND
Jim Haggerton, Mayor
DEA has been under contract to the City for design of Southcenter Parkway Extension, the
relocated road piece of the Tukwila South Project, since 2004. The contract has been amended
several times over the years to add additional funds and to adjust the scope of work. DEA has
completed "90% drawings" and these have been used by others (La Pianta, PSE, Highline
Water District and others) to do their own design work. DEA has not done any additional work
on the design for the last several years.
Southcenter Parkway Extension runs from S 180 Street to S 200 Street. A portion of the
future right -of -way is currently within Tukwila city limits and a portion is in the process of
annexing to the City; annexation will be completed by the end of 2009.
Section 4.3.1 of the Tukwila South Development Agreement states, in part:
The City shall, using grant funds secured for this Project, promptly complete the final
design of the extension and relocation of Southcenter Parkway from S. 180 Street to S.
200 Street "Southcenter Parkway Project" or "SCP Project"), including necessary sewer,
water, stormwater, natural gas, power and telecommunications utility system
improvements associated with this roadway improvement project (the "Final Design
Plans'), as documented in the 90% drawings completed by David Evans and Associates
dated September 2005 (the "90% drawings") and on file with the City. The City may use
up to $300, 000 of the grant funds identified in Section 4.3.7 below for the purpose of
completing the Final Design Plans; any costs to complete the Final Design Plans in excess
of $300, 000 shall be borne by the City.
DISCUSSION
The scope of work for the contract amendment includes items needed to complete the last 10%
of the design work. It also includes changes discussed over the last few years, including
INFORMATIONAL MEMO
Page 2
removal of S 178 Street and removal of the bike lanes. The cost for this scope of work is
$378,680.
When the Development Agreement was reviewed and adopted, the estimated cost to complete
the design work was $300,000 and this figure was included in Section 4.3.1. Since then costs
have increased as the necessary scope of work has changed.
Payment for this contract amendment will be as follows:
$300,000 from grant funds
78,680 from grant funds (since the City does not have the additional funds, La Pianta
has agreed the City may use additional grant funds)
RECOMMENDATION
Staff recommends Council authorize the Mayor to sign an amendment to Contract 04 -025 (H)
with David Evans Associates (DEA) to complete the 10% remaining design work for
Southcenter Parkway Extension at its October 5, 2009 Regular Meeting
ATTACHMENTS
WSDOT cover page for contract amendment 04- 025(H) for DEA
Scope of work for contract amendment, labeled Exhibit B -2 (to the cover page)
C:ltemp\XPgrpwise\InfoMemo SCP contract amend 9- 28 -09.doc
ig Washington State
Department of Transportation
Supplemental Agreement
Number 8
Original Agreement Number
04 -025
Project Number
84 -RW37
Project Title
Southcenter Parkway Extension Project
Description of Work
Preparation of construction documents including plans, specifications, and estimates (P.S. E.) for the
Southcenter Parkway Extension Project. Work includes the design of additional features as identified in Exhibit B
-2 and project bidding.
The Local Agency of City of Tukwila
desires to supplement the agreement entered into with David Evans and Associates, Inc.
and executed on 4/5/2004 and identified as Agreement No. 04 -025
All provisions in the basic agreement remain in effect except as expressly modified by this supplement.
The changes to the agreement are described as follows:
Section 1, SCOPE OF WORK, is hereby changed to read:
Additional wnrk as described in Exhibit B -2
Organization and Address
David Evans and Associates, Inc.
415 118th Avenue SE
Bellevue, WA 98005
Attn: Scott Soiseth
Phone: 425 -519 -6590
Execution Date Completion Date
4/5/2004 3/31/2010
New Maximum Amount Payable
1,349,817.00
11
Section IV, TIME FOR BEGINNING AND COMPLETION, is amended to change the number of calendar days for
completion of the work to read: Nn chancre
111
Section V, PAYMENT, shall be amended as follows:
Additional payment in the amount of $378,680 00 shall he added to the contract (see Exhibit 13-2)
as set forth in the attached Exhibit A, and by this reference made a part of this supplement.
If you concur with this supplement and agree to the changes as stated above, please sign in the appropriate spaces
below and return to this office for final action.
By: By:
DOT Form 140 -063 EF
Revised 9/2005
Consultant Signature Approving Authority Signature
Date
EXHIBIT B -2
CITY OF TUKWILA ENGINEERING DESIGN SERVICES
SOUTHCENTER PARKWAY EXTENSION PROJECT
SCOPE OF SERVICES
SUPPLEMENT NO. 8
SECTION 1.00 PROJECT DESCRIPTION AND DELIVERABLES
1.01 PROJECT DESCRIPTION
The objective of Supplement No. 8 is to document scope of work changes and to complete construction
documents including plans, specifications, and estimates (PS &E) for the Southcenter Parkway Extension
Project. In February 2006, a 90 percent PS &E package was delivered by the Consultant to the City of
Tukwila (City), and 90 percent comments by the City were given to the Consultant. The project was
placed on hold by the City in April 2006. In June 2009, the City contacted the Consultant to restart the
design and finalize the construction documents.
Prior to the 90 percent deliverable, the City requested that the Consultant incorporate design revisions
into the documents. These revisions, referred to as "Pre- ninety City," are as follows:
Add three new traffic signals.
Add four driveway intersections.
Add a new drainage system that will connect the outfall from the north pond to Pump Station 17.
Add five- foot -wide bike lanes to both sides of Southcenter Parkway along the full length of the
proj ect.
Realign the intersection of South 178th Street to intersect with Southcenter Parkway at a
90 degree angle.
Create a right -of -way plan for the new Southcenter Parkway and South 178th Street alignment.
Revise the roadway section, earthwork model, and channelization layout for South 178th Street.
Also prior to the 90 percent submittal, the Consultant incorporated, with the City's approval, revisions
requested by the Tukwila South Project. These revisions, referred to as "Pre- ninety South," are as
follows:
Add six bus pullouts along Southcenter Parkway.
Realign Southcenter Parkway around the existing wetland near Station (Sta.) 166 +00 (wetland
#1).
Add new traffic signals at Sta.149 +20, Sta.159 +50, and the South 200th Street intersection.
Add six new intersections on Southcenter Parkway as shown by La Pianta.
Add five Pressure Reducing Valve (PRV) stations for the Highline Water District watermain
extension.
Revise the illumination system from median lighting to behind the sidewalk lighting.
Revise the landscape /illumination plan to reflect the new median layout.
Revise the channelization plans to reflect the new median layout and turn pockets.
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DAVID EVANS AND ASSOCIATES, INC. 1
Scope of Services
Extend the storm drainage system along South 180th Street from Southcenter Parkway to the
P -17 Pump Station.
Conduct detailed analysis to provide local access to Mitchell Moving and Storage and Gaco.
The Pre ninety City and Pre ninety South revisions have been completed by the Consultant and were
incorporated into the 90 percent deliverable. A preliminary scope of services was agreed upon, but a
contract change order was not executed. The existing authorized budget was used to complete these
revisions.
One item that was included in the Pre ninety South revisions but the Consultant has not performed the
work for was designing Stream E enhancement plans for the area west of the roadway from
approximately Sta. 129 +00 to Sta. 139 +00. This work will be completed by the Consultant as the final
documents are prepared.
Additional revisions were requested by the City as part of the 90 percent comments. These revisions,
referred to as "Post- ninety City," are as follows:
1) Eliminate the realignment of South 178th Street.
2) Analyze the impacts of raising the maximum water elevation of the La Pianta south pond (south
of South 200th Street) to 29 feet.
3) Eliminate the bike lanes on Southcenter Parkway along the full length of the project.
4) Develop conceptual pond layouts for two (north and south) detention/water quality ponds.
Of these revisions, the Consultant has only completed the elimination of the South 178th Street
realignment and the development of the conceptual pond layouts, and began but did not finish the
analysis of raising the south pond water elevation to 29 feet. Again, these items were performed under
the existing budget, but a contract change order was not executed.
In June 2009, La Pianta and the City signed a developer agreement that provided design guidance for the
completion of PS &E package. These revisions, referred to as "2009 Agreement," are as follows and
require additional budget:
Maintain the 90 percent design with the exception of eliminating the bike lane.
Coordinate with PSE on the design of electrical and gas lines.
As discussed in a meeting with the City, La Pianta, and the Consultant, the following are design and task
items (requiring additional budget) that are needed to finalize the PS &E package:
Design a piped stormwater conveyance system to convey Stream E from approximately
Sta. 114 +40, 190' LT to approximately Sta. 130 +00. The piped system shall be located behind
the proposed sidewalk on the west side of the road. It is assumed that this portion of Stream E is
not required to be fish passable.
Redesign a portion of the Highline Water System due to the elimination of the South 178th Street
realignment.
Coordinate design of a joint utility trench (dry utilities) with Puget Sound Energy along the new
construction of Southcenter Parkway. The Consultant shall check for utility conflicts with the
joint utility trench.
Revise approximately 1600 If of roadway profile from Sta. 168 +00 to Sta. 184 +00 based on
backwater conditions for the maximum seven -day holding volume elevation of 29 feet for the
south pond.
Design the realignment of the Sta 118 +50 and Segale Drive C intersections per La Pianta's
90 percent review comments dated September 2009.
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DAVID EVANS AND ASSOCIATES, INC. 2
Scope of Services
Provide 9 additional stormwater, 7 additional sanitary, and 11 additional water stubouts as
described in La Pianta's 90 percent review comments dated September 2009
Update the cost estimate.
Update the special provisions to encompass revisions made by the new "2008 Standard
Specifications for Road, Bridge, and Municipal Construction."
In the preparation of this supplement, the Consultant has made the following assumptions:
Assuming La Pianta will obtain all required permits prior to the Ad date, the roadway profile
over the existing levee near Sta. 169 +50 will not be raised. If revision to the roadway profile is
required, a new contract supplement will be required.
The Consultant shall not design any stormwater ponds. La Pianta will provide regional
stormwater ponds for the use of the Southcenter Parkway Extension project. The Consultant will
design a conveyance system to the regional ponds as part of this supplement. If the Consultant is
required to design any stormwater ponds, a contract supplement will be required.
La Pianta will remove all existing structures, buildings, and all salvageable items identified in
La Pianta's comments dated September 2009 prior to the Ad date. La Pianta shall also cap all
utilities during the demo operation. La Pianta shall also decommission the existing water well
located at approximate station 156 +77 17' RT. If necessary, La Pianta will remove all hazardous
material within the proposed roadway limits. If the City is responsible for any items identified
above, a new contract supplement will be required.
The Consultant shall provide design plans to remove all asphalt, foundations and abandoned
utilities /conduits within the proposed roadway right -of -way.
From Sta. 139 +00 to Sta. 151 +00, the existing Stream E ditch will be filled. If necessary,
La Pianta will provide a new conveyance system for Stream E.
La Pianta is preparing the NPDES permit for the Tukwila South Project, including Southcenter
Parkway. The Consultant shall provide Southcenter Parkway design information to La Pianta for
the NPDES permit.
For stormwater runoff during construction, La Pianta will design and construct all temporary
erosion control ponds and conveyance systems for the project. La Pianta will provide the City
and Consultant the location of these ponds. The Consultant shall design the conveyance system
to the TESC ponds. Prior to the TESC ponds being constructed, the consultant shall design a
TESC system that directs water off of the proposed road construction to the low spots provided
by La Pianta. This initial TESC system will be referred to as Phase 1 on the plans. The Phase 2
TESC system to be design by the Consultant shall direct water off of the proposed road
construction and convey it to the TESC ponds constructed by La Pianta. It is assumed the TESC
ponds constructed by La Pianta will be available for use by October 1, 2010.
The south basin conveyance system will not be upsized for temporary pumping of north basin
stormwater to the south pond.
La Pianta will design a temporary stormwater conveyance system from the north basin to the
south pond, including all force main crossings under Southcenter Parkway.
At the future South 178th Street intersection location, no curb radii on the west side of
Southcenter Parkway will be designed. Future conduit for the west approach will be installed.
There are no changes to the existing locations of water, sanitary sewer, and stormwater stub -outs.
Confirmation is required from all parties, i.e. City, KPFF, and the Consultant, that the backwater
elevation of 29 feet shall be used for the south regional pond.
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DAVID EVANS AND ASSOCIATES, INC. 3
Scope of Services
The City will provide the driveway location needed for a future fire station.
La Pianta will provide the location for the driveway cut to the Schoenbachler property.
PSE will design the utility joint trench to include electrical, gas, and telecommunications lines.
The utility trench shall be located on the back side of the sidewalk on the east side of Southcenter
Parkway.
La Pianta will construct the joint utility trench.
The City shall provide direction to the Consultant as to whether the water line work north of
S 180 Street to Minkler Blvd. is to remain in the contract documents.
1.02 PROJECT DELIVERABLES FURNISHED BY THE CONSULTANT
The Consultant shall maintain a project file for pertinent work items. These files will be delivered to the
City at the conclusion of the project. In addition to the project files, the Consultant shall deliver the
following documents and products to the City as part of this agreement:
Meeting Minutes.
90 percent PS &E contract plans incorporating the revisions listed above.
Revised 90 percent cost estimate.
Revised 90 percent special provisions.
100 percent PS &E contract plans.
100 percent cost estimate.
100 percent special provisions.
Engineer's cost estimate back -up data.
Updated Hydraulic Report.
Updated Geotechnical Report.
Electronic bid documents provided to the Builders Exchange.
Addenda.
1.03 ITEMS FURNISHED BY THE CITY
All information on the regional stormwater ponds' locations, design, layout, details, and
hydraulic modeling.
All information on temporary erosion control ponds.
All available "As- Built" information for utilities and roadways for the storm drainage
extension on South 180th Street.
All updated Tukwila South Project CADD files developed by La Pianta.
SECTION 2.00 PROJECT MANAGEMENT AND QUALITY CONTROL
2.01 PROJECT MANAGEMENT
Direction of the Consultant staff and review of their work over the course of the project shall be
provided. This work element includes coordinating with the City and in -house staff, attending progress
meetings, and planning work items.
Periodic monitoring of the Consultant's design budget will occur over the course of the project. Current
status, as well as budget projections, will be developed. This work element is intended to help monitor
costs and budgets, and to propose corrective actions. These actions could include formal requests for
scope modifications and respective budget adjustments.
Drawings and documents received and generated over the course of the project will require review,
coordination, and file management to be completed by the Consultant.
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DAVID EVANS AND ASSOCIATES, INC. 4
Scope of Services
It is assumed that the contract duration to complete the design work is October 2009 through February
2010, or a five -month duration.
Deliverables: None
2.02 COORDINATION MEETINGS
This work element provides for the preparation for, attendance at, and documentation of meetings for the
duration of the contract. These meetings shall be the forums for the City to provide input and guidance
for the duration of the project. They will also be used to discuss project issues, approve submittals, and
develop potential solutions. It is assumed that there will be 14 meetings total with each meeting lasting
five (5) hours (includes driving, meeting, and minutes preparation).
The Consultant shall prepare for, attend, and document up to two (2) coordination meetings with the City
for the revised storm model and the review of the revised 90 percent plans. The meetings will be held at
the City offices. The Consultant shall prepare and distribute meeting minutes to all meeting participants
and the City within ten (10) working days following the meeting.
Deliverables: Meeting Minutes
2.03 QUALITY CONTROL /QUALITY ASSURANCE REVIEW
This task is for QC /QA review of the Consultant's deliverables by a designated QC /QA staff member.
The review shall cover documents, reports, plans, specifications, cost estimates, and pertinent
information on an ongoing basis. The QC /QA program entails the periodic review of study criteria,
design, assumptions, concepts, and presentation of product format, and assures that the overall project
objectives are being fulfilled.
The City will provide additional quality review. This will be coordinated with the Consultant Project
Manager and pertinent staff members. Support groups within the City will review and provide direction
on pertinent work items, and will coordinate with the Consultant Project Manager and pertinent staff
members.
Deliverables: None
SECTION 3.00 BASEMAPPING
3.01 BASEMAPPING
Completed Work
As part of the "Pre- ninety South" Project comments, additional basemapping was required for the design
of the storm drainage extension along South 180th Street from Southcenter Parkway to the P -17 Pump
Station. Also, survey crews were sent to locate geotechnical borings and to locate and survey the
waterline on Orillia Road. As of September 2009, the Consultant has completed this work.
New Work
In order to complete the design, some additional survey is needed. Due to new building construction in
recent years, a field walk from South 180th Street to Minkler Road shall be conducted to identify if any
new water or sewer services have been installed. The Consultant shall look for pavement patches in the
existing pavements. Underground locate service will not be contacted.
An on -call survey budget shall be created for miscellaneous pick -up information. It is assumed that three
days of field time and three days of office time are needed. Included in the three days of field time is one
day for geotechnical boreholes (see Section 8.00 Geotechnical) pick -ups.
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DAVID EVANS AND ASSOCIATES, INC. 5
Scope of Services
Deliverables: Updated Basemap
SECTION 4.00 DESIGN
4.01 REVISE SOUTHCENTER PARKWAY EXTENSION LAYOUT
At the direction of the City, the bike lanes are to be eliminated from Southcenter Parkway. It is assumed
that the current 90 percent plans will be revised to reflect the changes, and that a new set of revised
90 percent plans and a cost estimate will be submitted to the City for their review and comments. A
portion of the budget to bring the plans from 90 percent to 100 percent completion is accounted for the in
the original contract and in Supplements 1 through 7.
The Consultant shall revise the design of Southcenter Parkway based on: removing the bike lanes; if
required, raising the roadway profile due to the maximum water elevation of 29 feet for the south
regional pond; the new Stream E conveyance; the revised temporary erosion/sediment control design and
90% comments received from La Pianta dated September 2009. Impacts to the plans include the
following:
Revise typical sections.
Revise earthwork model and develop new cut /fill lines.
Revise TESC plans to show new cut /fill lines, inlet protection, plastic covering limits, and other
BMPs to direct stormwater to the TESC ponds provided by La Pianta.
Revise plan/profiles by relocating curbs, gutters, and sidewalks.
Revise plan/profiles to show new roadway and storm drainage profile, and new pipe sizes, rim,
and invert elevations.
Relocate tree pits and rehatch the sidewalk.
Revise all drainage structure locations and inverts in plans and profiles.
Revise curb return geometry.
Revise horizontal and vertical alignment of Segale Drive C and the Sta. 118 +50 intersections.
Revise callouts.
Revise drainage profiles to reflect new offsets and elevations.
Completely revise curb staking plans to reflect new geometry and elevations.
Revise wall plan/profile to reflect new horizontal and vertical location.
It is assumed that the sanitary sewer plans from South 180th Street to Minkler Boulevard would
not be affected by eliminating the bike lanes. South of 180th Street, it is assumed that the main
truck line will have no revisions but there will be revisions to the stub -out offsets.
Revise channelization plans by removing bike lane striping callouts and revising crosswalk
locations and callouts.
Revise water plans to show new hydrant and stub -out locations.
Revise sanitary sewer plans to show new stub -out locations.
Revise traffic signal plans to reflect new curb and crosswalk locations.
Revise illumination plans to reflect new locations for all luminaire poles, junction boxes, and
conduits.
Revise landscape plans to show new tree pit locations.
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DAVID EVANS AND ASSOCIATES, INC. 6 Scope of Services
Revise irrigation plans to reflect new tree pit locations.
Revise sanitary sewer and water plans.
Develop Stream E enhancement plans.
It is assumed that there will be minor revisions to the preloading and pump station plans.
The Consultant shall develop a utility conflict plan for the revised plans, and shall relocate utilities as
necessary to eliminate conflicts.
The Consultant shall coordinate with the utility companies in the designs and locations of fiber,
telephone, and cable TV lines. The utility companies will provide the Consultant with the locations of
vaults, and the sizes and numbers of conduits required. The Consultant shall coordinate the designs of
roadway and utility companies. The Consultant shall show the vaults, conduits, and joint trench locations
in the PS &E documents.
The Consultant shall revise and update the engineer's cost estimate. This work shall include updating all
bid item quantities and unit costs.
The Consultant shall rewrite and update the contract special provisions. Since the last time the
Consultant prepared the special provisions, a new Standard Specifications book was released by
WSDOT. The Consultant shall utilize the 2008 version of the Standard Specifications.
Deliverables: 90 Percent Plans (10 copies, half -size 11" x 17
90 Percent Contract Special Provisions (10 hard copies)
90 Percent Engineer's Estimate (10 hard copies)
4.02 PREPARE FINAL CONTRACT DOCUMENTS (100 PERCENT COMPLETION)
The Consultant shall prepare final contract documents in accordance with the City's review comments
from the final design coordination meeting and in accordance with regulatory agency permit conditions.
The following work shall be completed as part of the final contract document preparation:
Plan modifications and /or revisions in response to City review comments from the final
design coordination meeting.
Final design of project elements.
Special provisions.
Final quantities and construction cost estimate.
Final set of signed and reproducible construction contract documents.
The Consultant shall assemble all plan sheets, the general and special provisions, the engineer's estimate,
and associated documentation for submittal as an Ad Ready PS &E package. Upon approval by the City,
the Consultant shall upload electronically the contract documents, signed plan sheets, and special
provisions to the Builders Exchange website.
Deliverables: One set of Signed Full -Size Plans on bond paper
One set of Signed Half -Size Plans on bond paper
One set of Contract Special Provisions
One hard copy of Engineer's Cost Estimate
One hard copy of engineer's cost estimate back -up data
Contract Documents posted electronically to the Builders Exchange
4.03 ASSISTANCE DURING BID PERIOD
The Consultant shall provide assistance during the ad period for construction bids consisting of attending
a pre- construction meeting, assisting the City in responding to bidder questions, and preparing addenda.
It is assumed that three addenda shall be prepared, taking up to eight hours for each addendum.
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DAVID EVANS AND ASSOCIATES, INC. 7 Scope of Services
Deliverables: Addenda
SECTION 5.00 HYDRAULICS
There are two stormwater discharge ponds for this project that will be designed and constructed by
La Pianta. The Southcenter Parkway Extension project will outfall to these ponds.
The Consultant shall conduct the hydraulic analysis for the south area using a backwater elevation of
29 feet.
The Consultant shall confirm the hydraulic analysis for the north pond outfall along South 180th Street to
Pump Station 17.
The Consultant shall design a new piped conveyance system for Steam E from approximately
Sta. 114 +50, 190' LT to Sta. 130 +00. It is assumed that the crossing will be located in the same location
as the existing.
The Consultant shall finalize the analysis using the outfall elevation to reflect the new storm layout for
the 90 percent submittal, and incorporate that information into the Hydraulic Report.
The Consultant shall revise the storm drainage model of the conveyance system according to the plan
changes noted above. The level of effort for plan revisions is included in Section 4.00.
The Consultant shall update and finalize the hydraulic report.
Deliverables: South Hydraulic Model verification
North Hydraulic Model (Pump P -17)
Hydraulic Report (Draft and Final)
SECTION 6.00 COORDINATION
The Consultant shall coordinate with King County METRO to determine design parameters for the bus
pullouts. A meeting with METRO shall be held to verify the current design and determine if new design
standards have been implemented.
The Consultant shall coordinate with two local businesses Mitchell Moving and Storage, and Gaco to
discuss maintaining access from Southcenter Parkway. Two meetings have been held with each business.
However, another meeting with Mitchell Moving and Storage and Gaco shall be held to verify the current
design.
Three additional Highline Water District meetings will be required. One meeting will be to re -start the
design and to discuss waterline revisions due to the elimination of the South 178th Street realignment.
The other meeting is to discuss the 90 percent design comments. It is assumed that these meetings will be
held at the Highline Water District in Kent.
The Consultant shall coordinate with the following utility companies: Qwest and Comcast. The
Consultant shall coordinate and incorporate vault and conduit requirements into the PS &E package. It is
anticipated that three meetings shall be held. It is assumed that independent meetings with each utility
company are not needed.
The Consultant shall coordinate and provide information to PSE in order to facilitate the design of
electrical and gas lines. It is anticipated that three meetings shall be held.
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DAVID EVANS AND ASSOCIATES, INC. 8
Scope of Services
Additional coordination with KPFF and Anchor by the Consultant may be required throughout the
project duration. Budget required for additional coordination will be authorized by the City under a
separate notice to proceed.
Deliverables: Meeting Minutes
SECTION 7.00 ENVIRONMENTAL UPDATE
All of the environmental documentation for the City's portion of the work has been completed. A
"No Effect Determination" letter was prepared in July 2006. The Local Agency Environmental
Classification Summary was signed by FHWA in August 2007.
However, an update to these documents will be prepared to address recent release ESA listed species,
critical habitats, and the revised stormwater system.
Deliverables: Updated "No Effect Determination" Letter
Updated Local Agency Environmental Classification Summary Document
SECTION 8.00 GEOTECHNICAL
Due to the changes listed above to the Southcenter Parkway Extension Project, additional geotechnical
exploration is required. This field investigation will provide supporting documentation for the Stream E
culvert crossing and levee crossing. The following items will be included in this scope of work:
1. Review existing data and new design information to plan a supplemental subsurface exploration
program.
2. Conduct a site reconnaissance to determine boring and test pit locations, plan the field
exploration program, and coordinate the field activities.
3. Drill three borings ranging from 20 to 40 feet deep:
a. Two 20 -foot borings at the culvert (Stream E) crossing.
b. One 20 -foot boring at the roadway alignment and levee crossing.
A full -time observation by the Consultant engineering geologist will be provided for each boring.
Standard Penetration Test samples will be obtained at 2%2- to 5 -foot intervals; if soft soils are
encountered, thin walled (Shelby) tube samples will be obtained. The boreholes will be
backfilled at the completion of exploration. Please note that our proposed scope of services does
not include analyzing for the presence or absence of soil or groundwater contaminants.
4. Conduct selected laboratory testing to determine index properties of the on -site soils, including
moisture content, grain size analysis, and Atterberg limits.
5. Perform additional engineering analysis and prepare recommendations for design and
construction. Work items included are as follows:
a. Evaluation of the impacts of the roadway construction on the existing levee at about
Sta. 171 +00.
b. Evaluation and design recommendations for Stream E culvert crossing.
p:\ t\ tuka00000001\ 0000con \0030contract \0031add -ons \supplement no 8 (not approved) \soutlicenter supplemental services #8 09_09- 23.doc
DAVID EVANS AND ASSOCIATES, INC. 9
Scope of Services
6. Prepare and submit a draft geotechnical report.
7. Review PS &E plans and specifications.
8. Finalize the draft report based on the comments and submit a final geotechnical report for the
project.
The following assumptions were made in preparing this scope:
1. Right -of -entry and permits will be obtained and provided by the City.
2. Drill cuttings will be disposed of on -site.
3. Drill cuttings are assumed to be "clean," with no drumming or special handling required.
4. Mobilization and drilling can be accomplished during normal daylight work hours.
Deliverables: Updated Draft Geotechnical Report
Final Geotechnical Report
p: \t \tuka00000001 \0000con \0030con tract \0031add -ons \supplement no 8 (not approved)\southcenter supplemental services #8 0909- 23.doc
DAVID EVANS AND ASSOCIATES, INC. 10
Scope of Services
Classification Hrs. x Rate Cost
1 Quality Assurance /Quality Control 80 $57.75 $4,620.00
2 Project Manager 507 $57.75 $29,279.25
3 Senior Professional Engineer 620 $58.80 $36,456.00
4 Professional Engineer 440 $43.05 $18,942.00
5 Design Engineer 334 $31.50 $10,521.00
6 Cadd Manager 404 $40.43 $16,331.70
7 Sr. Traffic Engineer 107 $58.80 $6,291.60
8 Traffic Engineer 84 $43.05 $3,616.20
9 Sr. Landscape Architect 72 $40.90 $2,944.62
10 Sr. Landscape Designer 94 $32.24 $3,030.09
11 Senior Prof. Land Surveyor 3 $50.40 $151.20
12 Survey Tech. 32 $31.50 $1,008.00
13 Survey Crew 32 $49.35 $1,579.20
14 Senior Scientist 48 $44.10 $2,116.80
15 Scientist 80 $30.45 $2,436.00
16 Graphics 8 $33.60 $268.80
17 Project Administrator 84 $31.50 $2,646.00
18 Administrative Assistance 149 $28.09 $4,185.04
Direct Salary Cost
Supplement No. 8
Southcenter Parkway Extension Project
Summary
Total Hrs. 3178 $146,423
Subtotal $146,423
Overhead Cost 174.70% of Direct Labor $255,802
Overhead Cost Adjustment on remaining budget for Original and Suppl 1 -7 $1,643
Net Fee 30.00% of Direct Labor $43,927
Subtotal $447,795
Direct Non -Salary Cost
a) Deliveries/ Mail 5 Each $15.00 /Each $75.00
b) Reproduction: Plans Sets 30 Each $110.00 /Each $3,300.00
Reports 30 Each $50.00 /Each $1,500
c) Hydraulic Modeling Lump Sum $15,000
d) Travel (Personal Miles) 200 Miles $0.550 /Mile $110.00
e) Utility Tone Marking (APS) $1,000.00
Subtotal $20985 :a
Subconsultant
PanGeo
DEA Total to Complete Project
Existing Remaining Authorized Budget (Supt 1 -7)
Additional Budget for Completion (Supt 8)
Page 1
P:\ t\ TUKA00000001\ 000000N \0030Contract \0031Add -Ons \Supplement No. 8 (Not Approved) \Southcenter Supplemental Services #8 09_09- 23.xls
r$473,680
$95;00(#
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$146,423
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Printed 9/23/2009
1.00 (Project Description and Deliverables
Final PS8E Preparation
14,. 1111111111111.111F
2.00 Project Management and Quality Control
2.01 Project Management
A Monthly Progress Reports
B Monthly Invoices
2.02 Coordination Meetings
A Bi- Weekly Mtgs (Every other week 14 meetings)
B Storm Model Meeting (2 meetings)
C 90% plan review
2.03 Quality Control /Quality Assurance Review
3.00 IBasemapping
3.01 Basemapping
A S. 180th to Minkler Field Walk
B On -call surveying
4.00 (Design
4.01 !Revise Southcenter Parkway Extension Layout
A Bike Lane Elimination
B September 2009 90% Comment Resolution
C 90% Plans Preparation
Roadway plans /profiles
Segale Drive C Horizontal /Vertical Realignment
Station 118 +50 intersection realignment
Channelization and signing plans
TESC Plans /Details
Miscellaneous details
Storm drainage plans and details
Stream E Conveyance Plan /Profile
Retaining Wall
Water /Sewer plans
Sanitary Lift Station
PRV plans
Intersection plans
Signal design
I Steam E Enhancement plans
sk "2 0 Tat D
T 3.01a
80
6 8
6 14
70
6
4
68
42
6
4
1 8
P1l\ TUKAOOD000011000000N \0030Contract \0031Add -Ons \Supplement No. 8 (Not Approved) \Southcenter Supplemental Services 88 09 09- 23.xts
SUPPLEMENT NO. 8
Southcenter Parkway Extension Project
Estimated Person -hours Summary
2 3 4 5 6 7 8 9 10 I 11 12 13 14 15 16 17 18
8
4 4 4 32
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Page 2
12
40
1 1 8 8
2 1 24 24
is
DEA
Total DEA Total PanGeo Total
z otaI
80 $14,129 $14,129
42 I 7 63 $7,120 $7,120
42 7 69 $8,180 $8,180
14 126 $21,118 $21,118
2 14 $2,310 $2,310
2 14 $2,317 $2,317
68 $12,010 $12,010
32
401, 11$011$1 910t18&:
34 $4,518 $4,518
51 $6,419 $6,419
$10937 i $10,937
44 $5,908 $5,908
12 $1,811 $1,811
90 $11,566 $11,566
19 $2,611 $2,611
15 $2,084 $2,084
62 $7,816 $7,816
32 $3,969 $3,969
78 $8,786 $8,786
172 $22,144 $22,144
74 89,910 $9,910
13 $1,917 $1,917
33 $4,377 $4,377
89 $12,559 $12,559
21 $3,163 $3,163
27 $3,632 1 $3,632
89 $12,983 1 $12,983
64 $7,140 i $7,140
9/23/2009
4.02
A
B
C
D
4.03
A
B
C
Right -of -way plan
Illumination design
Landscape plans and details
Irrigation plans and details
Dry utilities
Engineer's estimate quantities
Specifications
Design submittal production
Prepare Final Contract Documents (100% Completion)
Final design coordination meeting
Comment Resolution
100% Plans Preparation
Roadway plans /profiles
TESC Plans /Details
Channelization and signing plans
Miscellaneous details
Storm drainage plans and details
Stream E Conveyance
Retaining Wall
Water /Sewer plans
Sanitary Lift Station
PRV plans
Intersection plans
Signal design
Stream E Enhancement Plans
Right -of -way plan
Illumination design
Landscape plans and details
Irrigation plans and details
Dry utilities
Engineer's estimate quantities
Specifications
Design submittal production
Post Contract Documents to Builders Exchange website
Assistance During Bid Period
Pre construction meeting
Responding to bidders questions
Addenda
2 3 4 5 1 6 1 7 8 i 9 10 11 12 13 14 15 1 16 17 18 1
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1 4 4 4 8
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,.task "4.4 Totat' 146 354 440 '326c
37
P t\ TUKA00000001\ 000000N \0030Contract10031Add -Ons \Supplement No. 8 (Not Approved) \Southcenter Supplemental Services 68 09_05- 23.AI,
SUPPLEMENT NO. 8
Southcenter Parkway Extension Project
Estimated Person -hours Summary
8
8
16
2
4
24
2
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8 96 $13,643 $13,643
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DEA
Total DEA Total PanGeo Total
,.T atar r= total
18 $2,402 $2,402
42 $5,941 $5.941
44 $5,274 $5,274
32 $3,567 $3,567
69 $7,781 $7,781
67 $8,852 $8,852
128 $19,118 819.118
22 $2,415 $2,415
43 $5,456 $5,456
10 $1,239 $1,239
19 $2,437 $2,437
21 $2,797 $2,797
54 $7,700 $7,700
34 $4,605 $4,605
7 $1,047 $1,047
9 $1,239 $1,239
33 $4,595 $4.595
12 $1,846 $1,846
12 $1,846 $1,846
50 $7,315 $7,315
18 $2,142 $2,142
8 $1,320 $1.320
12 $1,773 81,773
8 $895 $895
8 $895 $895
37 $4,480 $4,480
40 $6,330 $6,330
62 $9,877 $9,877
23 $2,929 $2,929
42 $5,292 $5,292
$1,426 $1,426
$2,659 $2,659
$4,239 $4,239
$280,31$ $280.319'
Page 3 9/23/2009
•;k)
5.00 'Hydraulics
A 'North Area
I North Hydraulic Model Verification
B South Area
South Hydraulic Model Verification
B 'Hydraulic Report Addendum
Itta
6.00 Coordination
A METRO
B Local Business
C IHighline Water District
D IComcast and Qwest
E IPSE
F IKPFF/Anchor
1 12
8 40 2
ATotal lb
I 8 1 8
1 8 18
1 16 16
I 8 8 8
1 16 16 16
I 105 I 82
Task s.o 9°6
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SUPPLEMENT NO. 8
Southcenter Parkway Extension Project
Estimated Person-hours Summary
1 2 1 3 1 4 5 6 7 8 9 10
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i t i DEA Total
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1 I
1
7.00 ;Environmental Update
A INo effects letter update I I 1 I I
B
Page 4
12 13 14 15 16 17 18
ExpensesI III
13 $2,334
PanGeo
t107
Total
Vat
$2,334
13 $2,334
12 62 $9,884 $9,884
WRAP. 11114 400.
$2,334
2 18 $3,023 $3,023
2 18 $3,023 $3,023
2 34 $5,875 $5,875
2 26 $4,012 $4,012
2 50 $7,853 $7,853
2 189 $33,462 $33,462
12 g 40# 35/g,48 5t:48
1 I I
1 12 1 40 1 8 1 1 8 69 $7,029 $7,029
'Environmental Summary Document Update I 1 1 1 1 1 1 1 1 36 I 40 1 1 1 4 81 $9,100 $9,100
48 80 8 12 10 $18130
8.00 IGeotechnicat 1 1 1 1 1 1 1 1 1 I
A IGeotechnical support and review 1 I 4 I 4 I 1 1 1 1 1 1 1 1 1 8 $1,426 $4,900 $6,326
Task il:OtOialSRE:11'•:::57..4*.li,41. *"4,aoq.
$20,985 $20,985
f97.1gq11:41:48 80 507 620 440 334 404 107 84 72 94 3 12; 32 '148A 80 8 84 149 olls $468,780 $4,900 $473,680:
9/23/2009