Contract - Plummer Associates, Inc. - 6/22/2023 STATE OF TEXAS §
COUNTY OF WILLIAMSON §
SUPPLEMENTAL CONTRACT NO. 1
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: PLUMMER ASSOCIATES,INC. ("Engineer")
ADDRESS: 1221 Auraria Parkway,Denver, CO 80204
PROJECT: BCRWWS East WWTP SCADA and HMI Programming Services
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 Plummer Associates, Inc.,
hereinafter called the"Engineer."
WHEREAS, the City and Engineer executed a Contract for Engineering Services, hereinafter
called the"Contract,"on the 14th day of November,2019 for the BCRWWS East WWTP SCADA
and HMI Programming Services Project in the amount of$1,005,580.00; 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$183,250.00 to a total of$1,188,830.00;
NOW THEREFORE,premises considered, the City and the Engineer agree that said Contract is
amended as follows:
I.
Article 2, Engineering 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, Compensation and Exhibit D, Fee Schedule shall be amended by increasing by
$183,250.00 the maximum amount payable under the Contract for a total of$1,188,830.00, 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 follow]
'R-2o23-1�'l
Supplemental Contract Rev.06/16
0199.1955;4861-3906-5699 84275
1
PLUMMER ASSOCIATES, INC.
By: zl
7/2-P23
Date
Supplemental Contract Rev.06/16
0199.1955;4861-3906-5699 84275
2
CITY OF ROUND ROCK APPROVED AS TO FORM:
By:
Craig rgan ayor ephanie L. Sandre, City Attorney
2�
Date
Supplemental Contract Rev.06/16
0199.1955;4861-3906-5699 84275
3
ADDENDUM TO EXHIBIT B
Engineering Services
This Exhibit is part of the Agreement between Plummer Associates, Inc. (Plummer) (the "Engineer") and
the City of Round Rock (the "City") for the project generally described as:
Brushy Creek Regional Wastewater Treatment System East Plant (BCE)
Expansion to 30 MGD
SCADA and HMI Programming Services
Amendment 1
Introduction
The scope of this amendment is to complete Phase B services for PLC and HMI programming for the
20MGD TO 30 MGD plant expansion, including continued coordination with the construction teams
through final completion of the construction project. The scope of this amendment also includes the
addition of maintenance services through 2023, including additional operator training and HMI software
support. This is intended to maintain the Ignition HMI servers as well as the Programmable Logic
Controllers (PLCs) as version upgrades and additional support packs are released. It also includes
firmware upgrades to the cellular radios in service at the lift stations and at the gateway in the WWTF.
Work Remaining
Major Tasks B has been completed. Tasks A, C & D have remaining tasks to be completed, Task E
(Maintenance Services) has been added and the work tasks are described below:
Task A—Project Management Services
Project Management services are included to support the remaining work including the programming HMI
configuration and on-site testing and commissioning tasks. We are estimating three months duration for
the contractor to complete the remaining work.
A.1 Additional time for PM services to include:
1. Bi-Weekly progress meetings to monitor the scope tasks and completion of the tasks. Conduct
internal team coordination as required to accomplish the work.
2. Project status reporting includes the percent complete for scope tasks and the issues, budget
status, and schedule. Maintain and update monthly, an action item log, a decision log, and a
project change log as well as the schedule.
3. Conduct final OC review for the deliverables.
Task B— Bid Phase Services
Phase B services are complete.
1
Task C-Construction Phase Services
Phase C services (Bid Phase) are nearly complete. We anticipate additional time required due to the
project stretching into 2023 with construction in several areas not yet completed and requiring electrical,
instrumentation and control testing,commissioning,and final punch listing before substantial completion
is reached by the contractor.
CA Additional time for construction items to include:
1. On-site Input/Output checks and commissioning of Trains 1 &2 PLCs.
2. On-site commissioning of Train 1 &2 Anoxic mixers
3. On-site commissioning of Train 1 &2 Anerobic mixers
4. On-site commissioning of Train 1 &2 Return Pumps
5. On-site commissioning of Train 1 &2 Dissolved Oxygen analyzers
6. On-site commissioning of Aeration blowers
7. On-site commissioning of UV controls and tie in to SCADA
8. On-site commissioning of post-Aeration Blowers
9. On-site commissioning of Alum systems
10. On-site tie-in of PTU PLCs and control systems
D.01 PLC programming
Programming needs to be completed in the following areas and will include site testing and
commissioning activities for the areas listed below in Section D.04. Construction progress is expected to
be completed in the next few months to allow the PLC programming to be completed and tested in the
following areas:
1. AB Train 1 Air Flow Valve AB Train
2. AB Train 1 Anoxic Mixers AB Train
3. AB Train 1 Instruments AB Train
4. AB Train 1 Aner Mixers AB Train
5. AB Train 1 Return Pumps AB Train
6. AB Train 2 Air Flow Valve AB Train
7. AB Train 2 Anoxic Mixers AB Train
8. AB Train 2 Instruments AB Train
9. AB Train 2 Aner Mixers AB Train
10. AB Train 2 Return Pumps AB Train
11. AB Trains 1-3 DO programming.
12. East Electrical building programming additions
13. Post Aeration Blowers UV Complex 2
14. Flow Split to UV1, UV2 UV1, UV2
15. UV PLC programming
16. Primary Alum Pumps Thickener Building
17. Secondary Alum Pumps Thickener Building
18. Sludge PLC programming
19. PTU coordination with contractor,commissioning, and communication setup.
20. Blower System Coordination and assistance to Howden during checkout of Master Blower control
panel.
E.02 HMI Configuration
1. Database tag additions for AB Trains 1&2
a. Air flow meters
2
b. DO instrumentation.
c. Anoxic mixers
d. Return Pumps
2. Additional tags for new blowers after Howden PLC program revisions completed
3. Changes/additions to Daily Report
4. Cleanup of duplicate tags on ILS2
a. Updating of flow tags since equipment changes
b. Tuning and operational items on ILS2 after equipment resolution
c. Updates after Thalle/Alterman completion
5. Resolution of PTU effluent meters
6. Resolution of RAS/WAS flow meters.
7. Revise tags for DO tags on Train 1, Aeration Basins 1-4, Train 2, Aeration Basins 1-4 after
equipment changes.
8. UV System screen updates and additions
9. Sludge system tags, alarms, and display screens
10. Revise screens/pages on Reuse system for better operations
a. Upgrade register list for swap to new Modicon PLC
11. Add dewatering press summary screens.
F.01 Training and Maintenance Services
City staff have indicated a need for additional training as the project started in March 2020, and the
staffing has changed significantly since that time. In addition, conversion of the HMI system at the WTP
has provided data on the need for maintenance services which has benefited the City with helpful
transition to the new system. The following services are proposed:
1. HMI training for operations staff
2. PLC/HMI configuration training for SCADA Technicians and maintenance staff
3. Software upgrades to the Ignition HMI software
4. Configuration support and minor updates/additions to the system through 2023
3
ADDENDUM TO EXHIBIT C
Work Schedule
Attached Behind This Page
BCRWS East WWTP SCADA and HMI PROGRAMMING
ID Task Task Name IDuration Start Apr'23 �May'23 �1un'23 Jul 1Aug'23 1Sep'23 Oct Nov'23 Dec'23 Ja
a Mode 262 91623 30 7 114 21'28'4'11'18252'9 1623 301 6'1320!21316171241 811522295)2119I2613'1 011 724 31
1 Phase B Construction 180 days Thu 4/20/23 1
2 Phase B HMI & PLC Programming 180 days Thu 4/20/23
3 NP* Aeration Basin Train 1 180 days Thu 4/20/23 r-
4 a; W. AB Train 1 Anoxic Mixers 30 days Thu 4/20/23
5 OP. AB Train 1 Anerobic Mixers 30 days Thu 4/20/23
6 AB Train 1 Instruments 30 days Thu 6/1/23
7 AB Train 1 Air Flow Valves 30 days Thu 6/1/23
(0400-PLC-1001/2)
8 AB Train 1 Return Pumps 30 days Thu 6/1/23
9 Aeration Basin Train 2 120 days Thu 7/13/23 I
10 EPM AB Train 2 Anoxic Mixers 30 days Thu 7/13/23
11 AB Train 2 Anerobic Mixers 30 days Thu 7/13/23
12 AB Train 2 Instruments 30 days Thu 8/24/23
13 AB Train 2 Air Flow Valves 30 days Thu 8/24/23
(0400-PLC-1001/2)
14 AB Train 2 Return Pumps 30 days Thu 8/24/23
15 wpt RAS/WAS Pump Station (T3) 60 days Thu 10/5/23
16 s Sludge Pumps 60 days Thu 10/5/23
17 UV Controls 30 days Thu 7/13/23
18 Flow Split to UV1/UV2 30 days Thu 7/13/23
19 Post Aeration Blowers 20 days Thu 8/24/23
20 Blower Electrical Checks 10 days Thu 8/24/23
21 Blower 1/0 checks 10 days Thu 9/7/23
22 Alum Feed System 40 days Thu 10/5/23 r III
23 OP4 Alum Instrumentation 20 days Thu 10/5/23
24 Alum Pump Checkout 20 days Thu 11/2/23
25 Sodium Hypo Feed Pumps 20 days Thu 11/30/23
26 Instrument Checkout 10 days Thu 11/30/23
27 Pump Checkout 10 days Thu 12/14/23
28 Sodium Bisulfate Feed Pumps 20 days Thu 11/30/23 �11
29 Instrument Checkout 10 days Thu 11/30/23 Too
30 � Pump Checkout 10 days Thu 12/14/23
Plummer V2 - Fri 5/12/23
ADDENDUM TO EXHIBIT D
Fee Schedule
Attached Behind This Page
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