24.09.24 PSA Stolfus & AssociatesEXHIBIT B
On-Call Agreement for Professional Services
TASK ORDER 2.7
US6 Mobility Improvement Project: Final Design Amendment – Stormwater
Drainage System
This Task Order pertains to the On-Call Agreement by and between the Town of Avon
(“TOWN”), and Stolfus and Associates (“CONTRACTOR”), dated On-Call Contract Execution
of September 3, 2021 (“the Agreement”).
CONTRACTOR shall perform services as provided herein and in the Agreement. This Task
Order shall not be binding until it has been properly signed by both parties. Upon
execution, this Task Order shall supplement the Agreement as it pertains to the project
described below.
Project Description: Provide final design for the US6 Multimodal Safety and Mobility
Improvements project. The project received the CDOT Revitalizing Main Street Grant to
slow prevailing speed on US6 and potentially install 3 pedestrian crossings as shown on the
project site below. Additional funds are needed to design a stormwater drainage system.
Project Site:
Proposed Tasks: See Attachment A.
1. Final Design Plans.
Budget/Proposal: ___$243,143 ____________________________________
Schedule: __Final Deliverable - Ad in Feb/Mar 2025 for Spring/Summer 2025
_Construction
This Task Order is as approved by Town Council on the 24th day of September, 2024.
Town of Avon
Recommended: ________________________________Public Works Director ____Date: ______________
Eva Wilson Title
Stolfus and Associates
Approved: ________________________________________President________________ Date: ______________
Elizabeth Stolfus Title
Town of Avon
Approved: _________________________________________Avon Town Mayor ____Date: ______________
Amy Phillips Title
Town of Avon
Attest: ______________________________________________Avon Town Clerk ____Date: ______________
Miguel Jauregui Casanueva Title
Eva Wilson (Sep 26, 2024 02:14 MDT)
Eva Wilson 09/26/2024
09/26/2024
09/26/2024
Miguel Jauregui Casanueva (Sep 26, 2024 12:31 MDT)
09/26/2024
5690 DTC Boulevard, Suite 330W
Greenwood Village, CO 80111
phone:303-221-2330 • fax: 303-221-2331
www.stolfusandassociates.com
September 4, 2024
Eva Wilson
Public Works Director
Town of Avon
ewilson@avon.org
Re: 24776 Amendment for US 6 Mobility Improvement Project – RRFB at Stone Bridge, Storm Sewer System,
and Other Design Additions
Dear Eva:
Please find below an amendment to the scope of services for the US 6 Mobility Improvement project to conduct
design for an RRFB at Stone Bridge and a storm sewer system to accompany median installation.
The following describes the proposed scope of services added to the scope of services dated January 4, 2024:
· Conceptual Design including a review meeting with CDOT and the development of an Engineer’s Opinion
of Probable Cost and Roll Plot
· Conceptual layout of RRFB pedestrian concept at Stone Bridge
· Opinion of Probable Cost (OPC) for
o Signal option and driveway relocation savings
o Conceptual OPC of storm sewer
o Breakdown of OPC by location based on jurisdiction information (4 locations)
· Additional CDOT review meeting for feedback on conceptual layout of stone bridge and storm sewer
system
· Pedestrian Installation Request Forms including traffic safety analysis and pedestrian count distribution
· Curb and gutter and pavement widening on eastbound US 6 at the west end the project including
drainage, lighting, and signing and striping improvements
· Storm sewer system for median locations with adverse drainage conditions. Includes median
modifications, investigation of pavement areas, and landscape design modifications.
· Geotechnical services to investigate soil conditions for sulfates/sulfites and existing pavement
thicknesses
ELEMENTS OF THE SCOPE OF SERVICES
A. Project Administration/Management
Stolfus will review and process invoices and will provide other project administration/ management services
(coordination and product review) throughout the duration of the project. We will also be responsible for day-to-
day management and coordination of the work elements.
Meetings:
· 1 – CDOT Pre-DOR Meeting (Conceptual Review Meeting #2) (Virtual)
· 4 – Design Progress Meetings with Town and CDOT (virtual)
Stolfus will assist the Town with Coordinating and scheduling meeting with CDOT. Stolfus will be responsible for
preparing meeting exhibits and participating in the meetings. Meeting notes will be generated and distributed to
the meeting attendees by Stolfus.
Attachment A
24776 Amendment for US 6 Mobility Improvement Project
September 4, 2024
Page 2
B. Conceptual Roadway Design
Based on the Town’s direction and CDOT’s feedback, the design criteria for the project will be updated to
incorporate raised landscape medians and an RRFB pedestrian crossing at Stone Bridge and submitted for review
and concurrence. Lane and shoulder widths with proposed striping will be displayed. Stolfus will prepare a single
conceptual design option for Town and CDOT consideration. Exhibits for the concept will be prepared on 11X17
and will be conceptual in nature, not developed for construction. One overall conceptual opinion of probable cost
will be developed to confirm limits of construction fit within the available budget. Conceptual opinion of probable
cost will be developed for four locations, as determined by the Town, including storm sewer design by location.
Review meetings will be held with the Town and CDOT to confirm the preferred option prior to advancing the
design as described in work element A. A roll plot of the general layout will also be created and updated as
needed.
C. Roadway and Traffic Design
Addition of pavement widening and curb and gutter extension on eastbound US 6 at the west end of the project.
Roadway profile is not expected for the new alignment; curb and gutter are expected to match existing grades on
US 6. This improvement will be modeled to maintain positive drainage and demonstrate 4:1 tie in slopes.
Shoulder widening east of the Eagle Bend Pedestrian Crossing in the eastbound direction of US 6 is included on
CDOT’s request and will be modeled for feasibility. Pavement area modifications in three adverse drainage areas
will be investigated using point elevations. Pavement core areas will be determined and coordinated with
geotechnical engineers. Medians along the entire project limits will be modified to coincide with proposed storm
sewer layout. Roadway and traffic design will be coordinated with drainage, lighting, and landscape design.
Signing and striping will be modified accordingly. One site visit will be conducted by roadway design team.
Pedestrian Crossing Installation Request Forms
Stolfus will prepare pedestrian installation request forms on behalf of the Town for the three pedestrian crossing
locations: River Edge, Eaglebend, and Mountain Stream. Traffic safety data on US 6 will be obtained and
analyzed. Pedestrian counts will be based on transit ridership as provided by the Town. Pedestrian counts will be
distributed to determine peak hour pedestrian volumes.
D. DOR (90%) Design Plans
Stolfus will revise 90% DOR plans based on design modifications. Tabulations will be broken up by the four locations
determined at conceptual design.
The 90% DOR Submittal will include:
· Additional Drainage Plan and Profile sheets, additional lighting sheets at Stone Bridge
Stolfus will provide QA/QC review for the project. We will also provide technical support throughout the project in
an advisory capacity. Our review efforts will confirm appropriateness of methodologies used, accuracy of
documents, reasonableness of conclusions, document completeness, and overall clarity.
G. Field Survey and ROW
Additional survey and ROW is not included in this amendment. If additional survey or ROW needs arise, a
separate amendment will be developed.
I. Drainage and Water Quality
Analyze existing drainage patterns and reevaluate drainage design for the areas for west end gutter pan
extension and shoulder widening east of Eaglebend. One site visit will be conducted by the drainage team.
Hydrology and hydraulics design for additional median improvements along the US 6 corridor connecting the 3
proposed pedestrian crossings and the Stone Bridge intersection. A storm network infrastructure will be designed
at median locations along the corridor based on stakeholder comments. Design calculations and a storm network
layout including horizontal and vertical profiles will be developed. Revisions to drainage design, SWMP, and
Drainage Report are included.
24776 Amendment for US 6 Mobility Improvement Project
September 4, 2024
Page 3
J. Lighting Design
Additional lighting will be provided at the west end of project near STA 1001+00, where curb and gutter extension
is occurring.
K. Landscape Design
Design base files will also be updated and median landscape design along entire project will be modified to based
on storm sewer network median impacts.
N. Geotechnical Services
Yeh and Associates will provide a geotechnical investigation and report on the existing pavement thicknesses,
soil sulfate/sulfite content and general subsurface profile. The field work includes collecting pavement cores and
soil samples at three locations. Site reconnaissance to start or mark borings and perform utility locates through
the Utility Notification Center of Colorado. Permitting will be obtained from CDOT and/or the Town. Up to 3
borings will be drilled to a depth of 10 feet or auger refusal. Core the asphalt at 3 locations. Cores will be
photographed and preserved for examination and measurement. Draft and Final Summary Report of findings will
be completed and will include a project geology map, boring location map, bore logs, laboratory test results and
asphalt core photographs.
SCHEDULE AND ESTIMATED FEE
We are available to begin work on this amendment immediately upon Notice to Proceed. An additional three
months will be added to the original project schedule. We will provide the services describe above on a Time and
Materials basis at our Standard Hourly Rates with a “Not to Exceed” limit which we will not charge beyond without
prior written approval. Stolfus has estimated that the above scope of services could be completed for a “Not to
Exceed” budget of $235,143.
Firm Service Fee
Stolfus and Associates, Inc. Transportation Engineering $123,436
RESPEC* Drainage Engineering $46,720
Clanton* Lighting Design $1,710
Yeh* Geotechnical Engineering $23,777
DHM* Landscaping $8,500
15% Contingency $31,000
Total $235,143
*Subconsultant to Stolfus and Associates, Inc.
Invoices for professional services rendered and expenses incurred will be prepared monthly. Invoices will include
a detailed description of meetings attended, work in progress, and tasks completed. Payment is expected within
30 days. After 30 days, unpaid invoices are subject to a 1.5% service charge, compounded monthly.
24776 Amendment for US 6 Mobility Improvement Project
September 4, 2024
Page 4
Limitation of Liability
In recognition of the relative risks and benefits of the project to the Town of Avon and Stolfus & Associates, Inc,
the risks have been allocated such that Town of Avon agrees, to the fullest extent permitted by law, to limit the
liability of Stolfus & Associates, Inc. to Town of Avon for any and all claims, losses, costs, damages of any nature
whatsoever or claims expenses from any cause or causes, including attorneys’ fees and costs and expert-witness
fees and costs, so that the total aggregate liability of Stolfus & Associates, Inc. to Town of Avon shall not exceed
the total compensation received by Stolfus & Associates, Inc. under this Agreement. It is intended that this
limitation apply to any and all liability or cause of action however alleged or arising, unless otherwise prohibited by
law.
Thank you again for the opportunity to work together on this project. Please call me if you have any questions.
Best Regards,
STOLFUS & ASSOCIATES, INC.
Celeste Chavez Shinn, PE
Project Manager
Accepted by:
________________________________
Date
Client PM: Date:9/4/2024
Project #: By:CCS
Date Requested: Add'l Service?
Requested by: Anticipated Duration 3 months
Scope Summary
Principal VP PE-5 PE-3 PE-2 PE-1 EI3 EI2 EI1 Office Manager ACCT-2 ACCT-1 Admin Asst. 1 TASK PHASE
$265.00 $240.00 $225.00 $205.00 $180.00 $165.00 $150.00 $145.00 $140.00 $115.00 $115.00 $100.00 $85.00 HRS TOTAL
Work Element
Work Element 1 - Proj. Admin/Mgmt $5,280 $6,560 $3,960 $2,990 $18,790
Coordination 5 12 6 23 $4,350
Contract Admin/Billing 6 2 20 28 $4,150
Pre-DOR Meeting w/CDOT 3 4 8 15 $2,860
Progress Meetings with Town and CDOT (assume 4) 8 14 16 38 $7,430
Subtotal Hours 22 32 24 26 104
Work Element 2 - Conceptual Design $2,400 $6,150 $10,560 $19,600 $38,710
Address Concept Comments 1 1 12 16 30 $4,665
Prepare initial OPC 1 4 4 8 17 $2,840
Prepare pre-DOR Submittal 1 2 16 40 59 $8,890
RRFB Concept at Stone Bridge 2 4 12 18 $3,280
Prepare OPC Savings - signal and driveway 1 8 9 $1,325
Prepare OPC - storm sewer and pavement areas 1 4 5 $1,060
Conceptual OPC by location - assume 4 locations 2 8 12 36 58 $9,140
Roll Plot + Update 2 6 8 32 48 $7,510
Subtotal Hours 10 30 64 140 244
Work Element 3 - Roadway and Traffic Design $3,360 $6,355 $16,830 $1,160 $15,960 $43,665
Beginning of Project Extension (west end) 1 2 2 6 11 $1,820
Horizontal Alignment and Modeling 1 2 12 15 $2,630
Shoulder widening investigation and modeling 1 2 8 20 31 $4,770
Pavement Area Modification Analysis (3 locations) 1 4 32 12 49 $8,020
Pavement Core Locations (KMZ) 1 4 5 $865
Median layout Modifications 1 4 20 24 49 $7,720
Signing and Striping design updates 1 2 4 12 19 $2,990
Design Coordination 4 8 12 24 $4,580
Pedestrian Crossing Installation Request Form and Analysis 4 6 8 32 50 $7,830
Site Visit 8 8 16 $2,440
Subtotal Hours 14 31 102 8 114 269
Work Element 4 - DOR Plans $2,460 $2,160 $4,620 $12,880 $22,120
Update plans based on new design (80 sheets) 4 8 40 52 $7,740
Tabulation Breakout (4 locations) 4 12 32 48 $7,280
QA/QC 4 12 8 20 44 $7,100
Subtotal Hours 12 12 28 92 144
Total Hours 46 105 12 218 8 346 26 761
Total Labor $$11,040 $21,525 $2,160 $35,970 $1,160 $48,440 $2,990 $123,285 $123,285
SUBCONSULTANTS/VENDORS Budget
Sub/Vendor 1 $46,720
Sub/Vendor 2 $1,710
Sub/Vendor 3 $8,500
Sub/Vendor 4 $23,777
Sub/Vendor 5
Total Subconsultants $80,707
EXPENSES: expense cost qnty
Mileage 0.670 225 $150.75
Hotel 107.00
Per Diem 59.00
Outside Reproduction
$150.75
15% Contingency $31,000
TOTAL SERVICES $235,143
Other
Type Service Provided
RESPEC
Clanton
DHM
Yeh
Client:Eva Wilson Eva Wilson
Project:Avon US 6 Mobility Improvements 24776
Location:Town of Avon Base Budget?
Eva Wilson
1
1-Task Order 2.7-US6 Improvements - Final
Design Amendment $235,143
Final Audit Report 2024-09-26
Created:2024-09-26
By:Eva Wilson (ewilson@avon.org)
Status:Signed
Transaction ID:CBJCHBCAABAAOHFar-v-WAPvFmFezPIg6tisGzFw8hR6
"1-Task Order 2.7-US6 Improvements - Final Design Amendmen
t $235,143" History
Document created by Eva Wilson (ewilson@avon.org)
2024-09-26 - 8:06:13 AM GMT
Document emailed to Eva Wilson (ewilson@avon.org) for signature
2024-09-26 - 8:14:33 AM GMT
Document e-signed by Eva Wilson (ewilson@avon.org)
Signature Date: 2024-09-26 - 8:14:47 AM GMT - Time Source: server
Document emailed to Elizabeth Stolfus (elizabeth@stolfusandassociates.com) for signature
2024-09-26 - 8:14:49 AM GMT
Email viewed by Elizabeth Stolfus (elizabeth@stolfusandassociates.com)
2024-09-26 - 3:04:42 PM GMT
Document e-signed by Elizabeth Stolfus (elizabeth@stolfusandassociates.com)
Signature Date: 2024-09-26 - 3:06:16 PM GMT - Time Source: server
Document emailed to aphillips@avon.org for signature
2024-09-26 - 3:06:17 PM GMT
Email viewed by aphillips@avon.org
2024-09-26 - 4:01:33 PM GMT
Signer aphillips@avon.org entered name at signing as Amy Phillips, Mayor Avon
2024-09-26 - 4:02:18 PM GMT
Document e-signed by Amy Phillips, Mayor Avon (aphillips@avon.org)
Signature Date: 2024-09-26 - 4:02:20 PM GMT - Time Source: server
Document emailed to Miguel Jauregui Casanueva (mjauregui@avon.org) for signature
2024-09-26 - 4:02:21 PM GMT
Email viewed by Miguel Jauregui Casanueva (mjauregui@avon.org)
2024-09-26 - 6:31:16 PM GMT
Document e-signed by Miguel Jauregui Casanueva (mjauregui@avon.org)
Signature Date: 2024-09-26 - 6:31:28 PM GMT - Time Source: server
Agreement completed.
2024-09-26 - 6:31:28 PM GMT