HomeMy WebLinkAboutC20-133 Hobbs ExcavatingFIRST AMENDMENT TO AGREEMENT BETWEEN
EAGLE COUNTY, COLORADO
AND
HOBBS EXCAVATING AND TRUCKING
THIS FIRST AMENDMENT (“First Amendment”) is effective as of _______________ by and
between Hobbs Excavating and Trucking a Colorado corporation (hereinafter “Contractor”) and
Eagle County, Colorado, a body corporate and politic (hereinafter “County”).
RECITALS
WHEREAS, County and Contractor entered into an agreement dated February 29, 2020, with
Eagle County Contract Number C20-078, for certain Services (the “Original Agreement”); and
WHEREAS, the Original Agreement contemplated that the Contractor would perform certain
Services with compensation in an amount not to exceed $43,850; and
WHEREAS, the County directed Contractor to perform additional services for additional
compensation as set forth below and as a result will need to amend the scope of work and
compensation in the Original Agreement; and
WHEREAS, County and Contractor intend this First Amendment to amend the scope of services
for the compensation as set forth below.
FIRST AMENDMENT
NOW THEREFORE, in consideration of the foregoing and the mutual rights and obligations as
set forth below, the parties agree as follows:
1.The Original Agreement shall be amended to include the additional services as
described in Exhibit B-1, which is attached hereto and incorporated herein by
reference.
2. The Original Agreement is amended to provide the compensation for all Work,
including the additional work set forth in Exhibit B-1, as set forth in Exhibit A-1.
The maximum compensation under the Original Agreement and this First
Amendment may not exceed $48,850 unless agreed to in another duly executed
amendment.
3.Capitalized terms in this First Amendment will have the same meaning as in the
Original Agreement. To the extent that the terms and provisions of the First
Amendment conflict with, modify or supplement portions of the Original Agreement,
the terms and provisions contained in this First Amendment shall govern and control
the rights and obligations of the parties.
DocuSign Envelope ID: D8ACCA9A-FFA3-40C2-A2C6-1876CDD3F4EB
4/6/2020
C20-133
2
Eagle County Amend Term Scope Comp Final 5/14
4. Except as expressly altered, modified and changed in this First Amendment, all terms
and provisions of the Original Agreement shall remain in full force and effect, and are
hereby ratified and confirmed in all respects as of the date hereof.
5. This First Amendment shall be binding on the parties hereto, their heirs, executors,
successors, and assigns.
IN WITNESS WHEREOF, the parties hereto have executed this First Amendment to the Original
Agreement the day and year first above written.
COUNTY OF EAGLE, STATE OF COLORADO,
By and Through Its COUNTY MANAGER
By: ______________________________
Jeff Shroll, County Manager
CONTRACTOR
By: _____________________________________
Print Name: ______________________________
Title: ___________________________________
DocuSign Envelope ID: D8ACCA9A-FFA3-40C2-A2C6-1876CDD3F4EB
owner
Stewart Hobbs
Exhibit A-1
DocuSign Envelope ID: D8ACCA9A-FFA3-40C2-A2C6-1876CDD3F4EB
Riffle Reconstruction
S2O (Scott Shipley, Riley Adams) participated in an onsite meeting with Hobbs (Stewart Hobbs), Eagle
County (Kevin Sharkey) and NV5 (John Usery) on 3/13/2020 to determine the best approach to
reestablish the riffle between the diversion structure and ERP Feature 1. The foremost concern was that,
due to the amount of bed material removed, a large elevation drop has formed below the grade control
which likely will create a dangerous hydraulic condition at high flows. Priorities discussed during the
meeting included reestablishing design grade through the riffle to eliminate the hazardous condition
and attempt to provide more resiliency to future flood events while importing the least amount of
material possible to keep additional costs low.
It was determined that the best approach was to add an additional partial grade control downstream of
the diversion structure to step grade down gradually, and fill between the two grade controls with 24”
boulder armoring material obtained from Eagle County’s pit. Additionally, 24” boulder armoring material
would be packed in on the downstream side of the added grade control to prevent scour and rebuild the
rock riffle to tie into existing grade upstream of ERP Feature 1. This solution matches the existing design
grades and substrate material while providing more resiliency and reinforcing the diversion structure. A
sketch of the proposed repair is provided below for clarification.
318 McConnell Dr. Lyons, CO, 80540 - 303.819.3985
Exhibit B-1
The following is taken from the S2O memo dated
March 18, 2020. It is a summary of the additional work
done to mitigate the unforseen condition in Eagle River.
DocuSign Envelope ID: D8ACCA9A-FFA3-40C2-A2C6-1876CDD3F4EB
318 McConnell Dr. Lyons, CO, 80540 - 303.819.3985
Figure 4: Profile Sketch of Post‐Flood Conditions and Proposed Reconstruction at Thalweg
The material received from the Eagle County pit was somewhat smaller than 24”, however it is very
angular, and Hobbs was diligent about tracking the material in well with the excavator. The angular
nature will help to lock the material together better than rounded material and should keep it in place
during high water events.
Figure 5: Hobbs Packing Angular Material in Between Grade Controls
DocuSign Envelope ID: D8ACCA9A-FFA3-40C2-A2C6-1876CDD3F4EB
318 McConnell Dr. Lyons, CO, 80540 - 303.819.3985
Hobbs completed installation of the additional partial grade control and reconstruction of the riffle
between the diversion structure and ERP Feature 1 on 3/17/2020. S2O checked elevations (using same
benchmark as previously described) of the additional grade control to provide a more gradual loss of
elevation leading into the riffle. In some cases visibility was non‐existent in areas covered with water, so
S2O relied on information relayed by Hobbs on location and placement of toe boulders for the cross‐
vane repair, grade control installation and placement of 24” armoring material. Additionally, several
boulders previously placed in the riffle were adjusted based on feedback from members of the local
rafting community. The completed riffle reconstruction successfully restores design elevations,
eliminates a serious safety concern and provides greater resilience to high water events.
Figure 6: Completed Diversion Structure & Riffle Reconstruction
DocuSign Envelope ID: D8ACCA9A-FFA3-40C2-A2C6-1876CDD3F4EB
