17-108.01 David Evans & Associates: Barker/BNSF Grade Separation r7-10%,o t
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� Washington State
VI/ Department of Transportation
Supplemental Agreement Organization and Address
Number 001 City of Spokane Valley
Original Agreement Number 11707 E Sprague Ave., Suite 106
Spokane Valley, WA 99206
17-108 Phone: 509-720-5102
Project Number Execution Date Completion Date
0143 August 24, 2017 December 31, 2018
Project Title Barker Rd/BNSF Grade Separation Phase I- New Maximum Amount Payable
Concept Development Design Services $179,991
Description of Work
Supplement No 1 changes the alternatives analysis concept design for the Barker/SR 290 intersection
from signals to a roundabout.
The Local Agency of The City of Spokane Valley
desires to supplement the agreement entered in to with David Evans and Associates, Inc.
and executed on August 24, 2017 and identified as Agreement No. 17-108
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:
See the attached Exhibit B for the scope of work.
II
Section IV, TIME FOR BEGINNING AND COMPLETION, is amended to change the number of calendar days
for completion of the work to read: There is no change to the project completion date.
Ill
Section V, PAYMENT, shall be amended as follows:
See the attached Exhibit A. This supplement adds $7,456 to the previous contract amount of$172,535 for a
total amount authorized of$179,991.
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.
GregHolder, PE, Vice President /J
By: By: Mar�c �a fk()(411 ( ,[qy
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DOT Form 140-063
Revised 09/2005
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Exhibit B
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City of Spokane Valley, WA
Barker Road/BNSF Grade Separation
Project No. 0143
Supplemental Agreement No. 1- Roundabout Design
Scope of Services
Prepared by:
David Evans and Associates, Inc.
908 North Howard Street, Suite 300
Spokane, WA 99201
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In association with HDR Engineering, Inc.
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September 21, 2017
Table of Contents
PROJECT DESCRIPTION,DESIGN CRITERIA,AND DELIVERABLES 1
A. Project Description 1
B. Project Coordination 1
C. Design Criteria 1
D. Project Deliverables and Schedule 1
E. Information,Responsibilities,and Services Provided by the CLIENT 1
F. General Project Assumptions 1
G. Change Management 1
TASK 1.0 PROJECT MANAGEMENT,TEAM AND COUNCIL MEETINGS,AND QUALITY CONTROL 1
TASK 2.0 CORRIDOR INVENTORY I DATA COLLECTION 1
TASK 3.0 PUBLIC INVOLVEMENT PROGRAM 1
TASK 4.0 NEPA RESEARCH 1
TASK 5.0 FIELD RECONNAISSANCE 1
TASK 6.0 ALTERNATIVES ANALYSIS FOR BARKER ROAD AND GRADE SEPARATION ALIGNMENT 2
6.1 Develop Project Alternatives 2
6.2 Develop Alternative Costs 4
6.3 Develop an Alternatives Evaluation Matrix 5
6.4 Develop Alternatives Evaluation Report 5
TASK 7.0 BNSF COORDINATION AND SUBMITTALS 5
7.1 Prepare Temporary Occupancy Application&Safety Plan 5
7.2 Obtain As-Built Track Plans 5
TASK 8.0 TASK 8-ROUNDABOUT CONCEPT DEVELOPMENT AND EVALUATION 5
8.1 Concept Development(HDR) 5
8.2 Concept Evaluation Technical Memorandum 5
City of Spokane Valley Page i Scope of Services—Supplemental Agreement No1
Barker RoadIBNSF Grade Separation September 21,2017
PROJECT DESCRIPTION, DESIGN CRITERIA,AND DELIVERABLES
A. Project Description
The language included in the original agreement is still in effect.
B. Project Coordination
The language included in the original agreement is still in effect.
C. Design Criteria
The language included in the original agreement is still in effect.
D. Project Deliverables and Schedule
The language included in the original agreement is still in effect.
E. Information,Responsibilities, and Services Provided by the CLIENT
The language included in the original agreement is still in effect.
F. General Project Assumptions
The language included in the original agreement is still in effect.
G. Change Management
The language included in the original agreement is still in effect.
Task 1.0 PROJECT MANAGEMENT,TEAM AND COUNCIL MEETINGS,AND QUALITY CONTROL
The language included in the original agreement is still in effect.
Task 2.0 CORRIDOR INVENTORY I DATA COLLECTION
The language included in the original agreement is still in effect.
Task 3.0 PUBLIC INVOLVEMENT PROGRAM
The language included in the original agreement is still in effect.
Task 4.0 NEPA RESEARCH
The language included in the original agreement is still in effect.
Task 5.0 FIELD RECONNAISSANCE
The language included in the original agreement is still in effect.
City of Spokane Valley Page 1 Scope of Services—Supplemental Agreement No. 1
Barker RoadBNSF Grade Separation September 21,2017
Task 6.0 ALTERNATIVES ANALYSIS FOR BARKER ROAD AND GRADE SEPARATION ALIGNMENT
The language included in the original agreement is still in effect.
6.1 Develop Project Alternatives
6.1.1 Alternative 1)
The language included in the original agreement is modified so that a conceptual roundabout design is
developed for the intersection of Barker Road and SR 290.
See alignment below.
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6.1.2 Alternative 2
The language included in the original agreement is modified so that a conceptual roundabout design is
developed for the intersection of the Barker Road extension and SR 290.
See alignment below.
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14
6.1.3 Alternative 3
The language included in the original agreement is modified so that a conceptual roundabout design is
developed for the intersection of the Barker Road extension and SR 290.
City of Spokane Valley Page 2 Scope of Services—Supplemental Agreement No. 1
Barker Road/BNSF Grade Separation September 21,2017
See alignment below.
6.1.4 Alternative 4
The language included in the original agreement is still in effect.
See alignment below.
.t. 9
6.1.5 Alternative 5
The language included in the original agreement is modified so that a conceptual roundabout design is
developed for the intersection of the Barker Road extension and SR 290.
See alignment below.
City of Spokane Valley Page 3 Scope of Services—Supplemental Agreement No. 1
Barker Road/BNSF Grade Separation September 21,2017
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ASSUMPTIONS
The language included in the original agreement is still in effect except that the following item will be
struck from the assumptions:
• •
The following language is added to the assumptions:
• For the purposes of this Phase 1 alignment alternatives development and analysis, intersection
configurations on the state highway are assumed to utilize roundabouts. An Intersection Control
Analysis will be developed by others to determine actual intersection type(s). Preliminary
geometry of the determined intersection type(s)will be finalized by others as part of a subsequent
project phase.
• The alternatives will be evaluated with the typical sections as provided by the CLIENT modified
to meet current CLIENT standards.
• The BNSF bridge will accommodate two tracks with 20 foot track centers with the new track
located to the south of the existing mainline track.
• Two access roads for BNSF will be provided;one on each side of the two mainline tracks and at
the same grade as the adjacent track.
• The bridge alternative developed in Alternative 2 may need to be modified for Alternative 5. HDR
will start with the bridge for Alternative 2 and make minor adjustments to be applicable for
Alternative 5.
6.2 Develop Alternative Costs
The language included in the original agreement is still in effect.
City of Spokane Valley Page 4 Scope of Services—Supplemental Agreement No. 1
Barker Road/BNSF Grade Separation September 21,2017
6.3 Develop an Alternatives Evaluation Matrix
The language included in the original agreement is still in effect.
6.4 Develop Alternatives Evaluation Report
The language included in the original agreement is still in effect.
Task 7.0 BNSF COORDINATION AND SUBMITTALS
The language included in the original agreement is still in effect.
7.1 Prepare Temporary Occupancy Application&Safety Plan
The language included in the original agreement is still in effect.
7.2 Obtain As-Built Track Plans
The language included in the original agreement is still in effect.
Task 8.0 TASK 8—ROUNDABOUT CONCEPT DEVELOPMENT AND EVALUATION
8.1 Concept Development(HDR)
The Concept Analysis will include evaluation of safety performance checks(speeds, sight distance,and
design vehicle turning movements). The alternatives will be developed to include:
• Horizontal information,which will include horizontal line work and performance checks to validate
the roundabout geometry
HDR will evaluate the feasibility of a roundabout for Alternatives 1 through 5 (alternatives 2 and 3 may
be similar but the vertical profile will differ due to the overpass and underpass nature of the design)and
provide a design technical memo summarizing the evaluation results.
8.2 Concept Evaluation Technical Memorandum
HDR will prepare a Design Technical Memorandum documenting the design criteria and decisions. The
memo will include a technical summary,description of the methods used, and a discussion of the analysis
criteria,results and recommendations.
ASSUMPTIONS:
• CITY will review the draft concept evaluation technical memorandum and provide comments to
incorporate into the final version of the memorandum.
• Operational analysis has been performed and lane configurations of the roundabout concepts have
been determined.
• Only the recommended roundabout concept geometry will be developed and evaluated for safety
performance checks.
• Performance checks will be evaluated but no exhibits of the performance checks will be prepared.
DELIVERABLES:
• Roundabout safety performance checks Summary Spreadsheet
City of Spokane Valley Page 5 Scope of Services—Supplemental Agreement No. I
Barker Road/BNSF Grade Separation September 21,2017
• Roundabout plan view layouts(5 layouts by HDR)
• Draft Intersection Concept Evaluation Technical Memorandum
• Final Intersection Concept Evaluation Technical Memorandum
City of Spokane Valley Page 6 Scope of Services—Supplemental Agreement No. 1
Barker Road/BNSF Grade Separation September 21,2017
DOCUMENTS EXEMPT FROM PUBLIC DISCLOSURE
The two pages entitled "Exhibit D" contain confidential cost and rate data and are withheld
from public disclosure pursuant to 23 USC 112(2)(E).
Prenotification; confidentiality of data. A recipient of funds requesting or using the cost
and rate data shall notify any affected firm before such request or use. Such data shall be
confidential and shall not be accessible or provided, in whole or in part, to another firm or to any
government agency which is not part of the group of agencies sharing cost data under this
paragraph, except by written permission of the audited firm. If prohibited by law, such cost and
rate data shall not be disclosed under any circumstances.
You may petition for a review of our findings pertaining to any redacted or withheld documents
pursuant to Spokane Valley Municipal Code (SVMC) 2.75.080; and obtain judicial review
pursuant to RCW 42.56.550.
DOCUMENTS EXEMPT FROM PUBLIC DISCLOSURE
The two pages entitled "Exhibit E" contain confidential cost and rate data and are withheld
from public disclosure pursuant to 23 USC 112(2)(E).
Prenotification; confidentiality of data. A recipient of funds requesting or using the cost
and rate data shall notify any affected firm before such request or use. Such data shall be
confidential and shall not be accessible or provided, in whole or in part, to another firm or to any
government agency which is not part of the group of agencies sharing cost data under this
paragraph, except by written permission of the audited firm. If prohibited by law, such cost and
rate data shall not be disclosed under any circumstances.
You may petition for a review of our findings pertaining to any redacted or withheld documents
pursuant to Spokane Valley Municipal Code (SVMC) 2.75.080; and obtain judicial review
pursuant to RCW 42.56.550.