CM-2020-062 - 2/28/2020STATE OF TEXAS §
COUNTY OF WILLIAMSON §
SUPPLEMENTAL CONTRACT NO.1
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: CAS CONSULTING & SERVICES INC. ("Engineer")
ADDRESS: 7908 Cameron Road Austin TX 78754
PROJECT: South Interceptor Manhole Rehabilitation
This Supplemental Contract No. 1 to Contract for Engineering Services is made by and between
the City of Round Rock, Texas, hereinafter called the "City" and CAS Consulting & Services,
Inc., hereinafter called the "Engineer".
WHEREAS, the City and Engineer executed a Contract for Engineering Services, hereinafter
called the "Contract", on the 8th day of August, 2019 for the South Interceptor Manhole
Rehabilitation Project in the amount of $87,680.00; and
WHEREAS, it has become necessary to amend the Contract to modify the provisions for the
scope of services and to increase the compensation by $11,470.00 to a total of $99,150.00;
NOW THEREFORE, premises considered, the City and the Engineer agree that said Contract
is amended as follows:
I.
Article 2 EnaineeTing Services and Exhibit B. Engineering Services shall be amended as set
forth in the attached Addendum to Exhibit B. Exhibit C. Work Schedule shall be amended as set
forth in the attached Addendum to Exhibit C.
II.
Article 4. Comuensation and Exhibit D, Fee Schedule shall be amended by increasing by
$11,470.00 the maximum amount payable under the Contract for a total of $99,150.00, as shown
by the attached Addendum to Exhibit D.
IN WITNESS WHEREOF, the City and the Engineer have executed this Supplemental
Contract in duplicate.
[signature pages fallow]
• Z.
Supplemental Contract
0 199.1935; 00440120
Rev.06: 16
84275
CAS CONSULTING & SERVICES, INC.
i�i11 • .�.�-��
By:
Jes 4Tenn, Chief Operating Officer
2/21/2020
Date
Supplemental Contract Rev.06.16
0199.1935; 00440120 84275
CITY OF ROUND ROCK AAPPVED AS T FORM:
BY:Laurie Hadley, ity Manager L. Sheets, City Attorney
2' �02-C>
Date
Supplemental Contract aev.06 16
0 199.1935; 00440120 84275
ADDENDUM TO EXHIBIT B
Engineering Services
The City of Round Rock has retained CAS to provide limited evaluation and manhole rehabilitation
construction documents for approximately 55 manholes east of I35 and north of TX45 in Round Rock,
Texas. This Supplemental Agreement is to add full replacement and new manhole/pipeline design, including
surveying, erosion control, and other services, that were not included in the previous agreement. CAS will
prepare construction documents (plans, specifications, opinion of probable cost (OPCC), and schedule).
SCOPE OF WORK
Project Management
Project Management services includes survey coordination and property ownership review for this
supplemental agreement. Property ownership will include determining potential property owners that will need
to be contacted for potential construction easements. The City of Round Rock will perform construction
easement coordination.
Manhole Review & Rehabilitation Design
The additional design for this supplemental agreement includes a pipe plan and profile sheet, erosion and
sedimentation control sheet(s), traffic control standards, manhole details, and bypass pumping coordination.
Bypass pumping coordination will include preparation of a performance specification. Bypass pumping flows
will assume full pipe flows. The following specific tasks and deliverables will be prepared and submitted as
part of 90°-4') and 100"0 deliverables:
1. 90% Plans, OPCC, Specifications, Construction Schedule
2. 90% QC Review
3. 100% Plans, OPCC, Specifications, Construction Schedule
4. 100% QC Review
Bid Phase Services
Bid phase services are included under the original contract agreement.
Construction Phase Services
Construction phase services are included under the original contract agreement. Additional hours are shown
to review additional submittals associated u7th installation of new manholes.
1. Review construction submittals for conformance with construction documents.
Assumptions
All submittals will be provided to the City of Round Rock digitally for reproduction. City of Round Rock
staff will provide access, transportation, and staff for field work.
CAS Scope excludes:
• Right of entry is not required (the project is accessible)
• Odor control services
• SUE/potholing services
• payment application review
• Preparation of construction easements
• Preparation of drawings and documents for any permits other than the TxDOT Utility Permit
1 of 2
Fee
Sec Exhibit D for the proposed lump sum fee schedule. CAS appreciates the opportunity to work with the
City of Round Rock on this project. Should you have any questions or need additional information please do
not hesitate to contact our office.
2 of
ADDENDUM TO EXHIBIT C
Work Schedule
Task
Duration
Com letion Date
609/o Basis of Design Memo -
Finalized
N...-'A
1 /20/2020
Supplemental Agreement —
Surve V NTP
N/A
3/02/2020
Survey
1 month
4/3/2020
90% Submittal
2 months
6/5/2020
Review / Meeting
2 weeks
6/19/2020
1000rr, Submittal
4 weeks
7/17/2020
Advertise
1 month
8/ 14/2020
Bid & Award
2 months
10/16/2020
Construction
6 months
4/16/2021
C)
x 77 77, W W
o
w W N
-4
cn 0 o0 0
0
c 0 Q rn
N
CD j3' CD
=. m m w
m
m
��-, m
TCD
(D U7
�
2
01
�•
N
�
[D
N
r
Q-1
w
0LnOcc0
O —
N
r
m
�
Be
a
ro
p V Oso
n
O
O 0 0 0
o
C�
0
m
v,
69
-6969169694A
0
0 0 0 0 0
a
b
o c a a O
0
0 0 0 0 0
Q 0
N
R
N
y
c
-
�-bl
cr
in
c
p
co
0 0 0 0
0 0 0 0 C
3
Z.
Q
0 0 0 0 0
C
0
0
N
�69
v)�En
o
j
-' j
�
al rn
a
y
a)4.fo--4o
r
0
00000
to
o
b c c o 0
0
0 0 0 0 0
CA
C
H
v
v
m
z
c
ic
0
m
v
ITCity of Round Rock
ROUND ROCK Agenda Item Summary
Agenda Number:
Title: Consider executing Supplemental Contract No. 1 with CAS Consulting &
Services, Inc. for the South Interceptor Manhole Rehabilitation Project.
Type: City Manager Item
Governing Body: City Manager Approval
Agenda Date: 2/28/2020
Dept Director: Michael Thane, Utilities and Environmental Services Director
Cost: $11,470.00
Indexes: Self -Financed Wastewater Construction
Attachments: Supp. Contract No. 1, Map
Department: Utilities and Environmental Services
Text of Legislative File CM-2020-062
The South Wastewater Interceptor was installed in 1984 and is co -owned by the City of Round
Rock (55.95%) and the City of Austin (44.05%). Inspections of the South Wastewater
Interceptor indicated deteriorating conditions of the manholes located along the entire length of
the wastewater line. Deteriorating manholes can lead to infiltration of water into the wastewater
line, and if left untreated, the failure of the manhole.
During recent site investigations, it was determined that one manhole could not be rehabilitated
and will need to be completely replaced. Additionally, another downstream manhole will need to
be intstalled on the interceptor and a small portion of the wastewater line rerouted on the south
interceptor to avoid degradation of a 20-foot-deep manhole. The addition of these two
manholes will maximize the life of our deep interceptor and will save the City time and
resources. The work requires additional surveying and engineering -related tasks.
The original engineering contract with CAS Consulting & Services, Inc. was $87,680.00 of
which the City of Round Rock's portion of the cost was $49,056.96. CAS Consulting &
Services, Inc. has provided this Supplemental Agreement No. 1 in the amount of $11,470.00.
The City of Round Rock's portion of this supplemental agreement will be $6,417.47 bringing the
City's total project costs to $55,474.43.
Cast: $11,470.00
Source of Funds: Self -Financed Wastewater Construction
City of Round Rock Page f Printed on 2/27/2020