BCRUA-2024-021 - 10/23/2024' B HY CREEK
REGIONAL UTILITY AUTHORITY
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SUPPLEMENTAL CONTRACT NO. 2
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: WALKER PARTNERS ("Endneer")
ADDRESS: 6504 Bridge Point Parkway, Suite 200, Austin, TX 78730
PROJECT: Planning Level Evaluation — Phase 2A Water Treatment Plant Expansion
This Supplemental Contract No. 2 to Contract for Engineering Services is made by and between
the BRUSHY CREEK REGIONAL UTILITY AUTHORITY, INC., hereinafter called "BCRUA"
and Walker Partners, hereinafter called the "Engineer."
WHEREAS, the BCRUA and Engineer executed a Contract for Engineering Services, hereinafter
called the "Contract," on the 27th day of September, 2023 for the Planning Level Evaluation —
Phase 2A Water Treatment Plant Expansion Project in the amount of $198,895.00; and
WHEREAS, the BCRUA and Engineer executed Supplemental Contract No. 1 on March 27, 2024
to amend the scope of services and to increase the compensation by $3,124,207.00 to a total of
$3,323,102.00; 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 $238,042.00 to a total of $3,561,144.00;
NOW THEREFORE, premises considered, BCRUA and the Engineer agree that said Contract is
amended as follows:
Article 2, Enaineerinl~ 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.
Article 4, Compensation and Exhibit D, Fee Schedule shall be amended by increasing by
$238,042.00 the lump sum amount payable under the Contract for a total of $3,561,144.00, as
shown by the attached Addendum to Exhibit D.
IN WITNESS WHEREOF, BCRUA and the Engineer have executed this Supplemental Contract
in duplicate.
[signature pages follow]
Supplemental Contract Rev 03:2011
0140 4634-66, 4867-3987-4798 215829
8CGefe-A2.62 q-D2/
WALKE PART s
By:
ron rc er - Vice President
10/ 11 /24
Date
BRUSHY CAEEK REGIONAL UTILITY AUTHORITY, INC.
By:
Na'cole Thompson, BCRUA President
p2 2
Date
APPROVE A ' TO FORM:
By:
Stepha . Sheets, BCRUA Attorney
ADDENDUM TO EXHIBIT B
ENGINEERING SERVICES
The purposes of Supplemental Amendment No. 2 ore to capture additional design services identified
during the development of the 60% design submittal and update the WTP site drainage analysis
based on recent feedback received from the City of Cedar Park] during a pre -application meeting.
Specific additional services include:
- implementation of BCRUA administrative network and SCADA network improvements to
address projects identified during a Cybersecurity Analysis performed by others;
- incorporation of additional treatment plant process enhancements requested by BCRUA;
and,
Updating drainage calculations originally performed in the 2008 Preliminary Engineering
Report to utilize Atlas 14 rainfall (published in 2018) as required to comply with City of Cedar
Park and tower Colorado River Authority permitting requirements.
A portion of scope from Supplemental Amendment No. 1 involving a cybersecurity report no
longer needs to be performed and will be descoped under this amendment with the associated
fee being credited to this amendment.
ASSUMPTIONS
Engineer's assumptions apply to all tasks set forth in this Exhibit.
1) BCRUA shall provide access for investigation of fiber and copper infrastructure.
2) The SCADA departments of the BCRUA member cities will be available for meetings to
review data interconnections.
3) The VOIP system is anticipated to be a hosted service. Design of an on -premises call bridge is
excluded. Should the phone system at TSC remain as -is, design of interconnection between
the TSS V01P system and TSC phone system for paging purposes is specifically excluded.
4) Design of Active Directory servers, file servers, or print servers is specifically excluded.
5) The design of the new TSS administrative network is to provide internet access through both
hard wired and wireless means to laptop and desktop computers for City of Round Rock
employees.
6) It is assumed that internet access for City of Round Rock employees will allow them to use
their Office 365 email accounts and access resources on the City's ShorePoint site.
7) The drainage calculations for BCRUA Ponds land 2 in the PER in 2008 used the TXDOT
Intensity -Duration -Frequency for Travis County which was based on the USGS 1998
statistical rainfall. The drainage analysis will be updated to utilize the Atlas 14 rainfall
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Lou Walker Partners
K engineers I surveyors
published in 2018. Some features on Figure 2.6 of the 2008 PER are identified as impervious
cover that do not contribute runoff, such as the open clarifiers, so the overall amount of
permitted impervious cover on the WTP site will be clarified, along with any proposed
modifications to the amount of impervious cover.
BASIC SCOPE OF SERVICES
Task 1.0 - Design Additional Services
1.1 Gap Analysis and Closure for Phase 2/2A SCADA Network
1.1.1 Subcontract Alterman Electric
1.1.1.1 Coordinate to identify submitted and approved hardware for Phase 2.
1.1.1.2 Identify necessary connectivity for TSC.
1.1.1.3 Identify missing hardware at TSC.
1.1.1.4 Identify missing hardware/software configuration for intake tower
camera connections to Cedar Park, Round Rock, and Leander.
1.1.1.5 Determine inventory of Ignition HMI modules in Phase 2 and additional
modules required for Phase 2A for communication.
1.1.2 Coordination with Inductive Automation to ensure all components/modules of the
Ignition HMI are compatible between BCRUA, Cedar Park, Leander, and Round Rock.
1.1.3 Conduct software simulation of the final SCADA network configurations to
determine any missing hardware or programming configurations.
1.1.4 Identify hardware at TSC which may be end of life by 2027.
1.1.4.1 Ignition Servers
1.1.4.2 Ignition Workstations
1.1.4.3 MQTT Brokers
1.1.4.4 Sequel Server Historian
1.1.4.5 Network Attached Storage (NAS)
1.1.5 Specify new hardware where end of life components have been identified.
1.1.6 Write a migration plan to eliminate or minimize gaps in connectivity when bringing
Phase 2 sites online.
1.1.7 Produce drawings of any new network configurations.
1.1.8 Conduct a workshop with BCRUA to walk through the additions and updates prior to
the release of bid documents.
1.1.9 Conduct a workshop with the SCADA department of Cedar Park, Leander, and Round
Rock to review their connectivity prior to the release of bid documents.
1.2 New Administrative Network for Treatment Structure South
1.2.1 Investigate existing telephone system and determine method of extension from TSC
to TSS.
1.2.2 Design WiFi access point system for the second floor of TSS.
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10ni2024 engineers P swveyo•s
1.3
1.2.3 Design Voice Over IP (VOIP) phone connectivity for TSS.
1.2.4 Produce drawings for:
1.2.4.1 Office network drops.
1.2.4.2 Network drops to cubicle furniture.
1.2.4.3 Switching/routing equipment.
1.2.4.4 Network equipment rack(s).
1.2.4.5 Uninterruptible power for equipment racks.
1.2.4.6 Cable trays, J hooks, and other cable pathways.
1.2.5 Write specifications for cabling, network drops, equipment racks, patch bays,
network switches, VOIP phones, and network appurtenances.
Separate Admin/SCADA Networks for Treatment Structure Central
1.3.1 Field investigation of existing Admin network at TSC.
1.3.2 Subcontract Prism Electric for testing/tracing fiber in the TSC admin and security
camera network.
1.3.3 Catalog existing hardware and software configurations for switches, routers, and
firewalls.
1.3.4 Create drawings of the following:
1.3.4.1 Existing, transition, and final equipment rack configurations.
1.3.4.2 New architecture for fiber ISP, firewalls, routers, and switches.
1.3.4.3 Integration of new "head end" equipment with existing switches and
WiFi access points.
1.3.4.4 Migration of security camera network from the integrated
admin/SCADA network to the new, isolated admin network.
1.3.5 Write a migration plan and sequence of installation to prevent admin/SCADA
network downtime.
1.3.6 Determine impact of split admin/SCADA network architecture on
1.3.7 Delivery Point communication for Cedar Park, Lender, and Round Rock.
1.3.8 Develop specifications for new routers, switches, cellular modems, and other
hardware as identified.
1.3.9 Coordinate with ATT and Verizon as needed for specification of public IP addresses,
services, and validation of hardware compatibility.
1.4 Additional Process Enhancements
1.4.1 Design a new sodium hypochlorite fill station for the Phase 2A bulk talk to include
instrumentation and annunciation for the Phase 1D bulk tank.
1.4.2 Design a pump station to collect and recycle instrument water from the Disinfection
Facility chlorine analyzers to the washwater basin.
1.4.3 Evaluate the feasibility of repurposing the existing fluoride tank to serve as polymer
tank including power and heater controls. The tank will also include a fill station,
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10/7/2024 engineers G surveyors
associated piping, and instrumentation. It is assumed that the tank and outlet piping
will include a thermostatically operated heater and/or heat trace. A temperature
alarm will be connected to SCADA to detect a failed heating system.
Task 2.0 - Drainage Study
2.1 Existing Conditions
2.1.1 Verify the existing onsite drainage areas shown on Sheet CL-5 of the plans and
confirm the reasonableness of the assumed Tc of 10 minutes and the appropriate
Rational C value for each subbasin.
2.1.2 Obtain the as -built plans for the Hur Industrial Boulevard storm drain system. Verify
the offsite drainage areas along Hur Industrial Boulevard shown in Figure 2-5 of the
2008 PER report and confirm the reasonableness of the assumed Tc of 10 minutes
and the appropriate Rational C value for each subbasin.
2.1.3 Using the existing onsite geometry develop elevation -volume -discharge tables for
Pond 1 and Pond 2.
2.1.4 Develop an HEC-HMS model of Pond 1 and Pond 2 to represent existing conditions.
Include the Atlas-14 rainfall depths for the 2-year, 10-year, 25-year and 100 year
storm events.
2.1.5 Verify the water quality treatment volume required for compliance with the LCRA's
Highland Lakes Ordinance.
2.1.6 Update the drainage area and culvert tables shown on Sheet CL-5 of the plans.
2.2 Proposed Conditions
2.2.1 Refine the proposed onsite drainage areas as shown on Sheet CL-6 of the plans and
confirm the reasonableness of the assumed Tc of 10 minutes and the appropriate
Rational C value for each subbasin.
2.2.2 Update the HEC-HMS model of Pond 1 and Pond 2 to represent proposed
conditions.
2.2.3 Determine if any modifications are necessary to the water quality treatment volume
required for compliance with the LCRA's Highland Lakes Ordinance based on the
proposed improvements shown on Sheet CL-6.
2.2.4 Update the drainage area and culvert tables shown on Sheet CL-6 of the plans.
2.3 Summarize the results of the drainage analysis in a Draft Drainage Technical Memo.
2.4 Meet with Owner to discuss the Draft Drainage TM and consider future phasing.
2.5 Update and finalize the Drainage Technical Memo based on Owner comments. The Final
Drainage Technical Memo will clearly define the scope of the Phase 2A expansion and
present an updated phasing plan for future expansions to achieve full build -out of the
facility.
10/7/2024
LAAWalker Partners
14 engineers I surveyors
ADDENDUM TO EXHIBIT C
WORK SCHEDULE
The assumed that the additional services in this amendment will be included in Phase 2A project
with no impact to the project schedule.
10/7/2024
Walker Partners
X engineers i surveyors
ADDENDUM TO EXHIBIT D
FEE SCHEDULE
Total compensation for services under Supplemental Contract No. 2 is estimated to be $238,042 as
shown in Attachment 1 to Exhibit D. This amount assumes a credit of $55,424 for scope of services
removed from Supplemental Amendment No. 1.
Owner shall pay Engineer for Basic Services set forth in Exhibit B on the basis of Lump Sum as
described in Paragraph 1.0 of the Agreement dated September 27, 2023.
Total compensation for the Project shall be adjusted from $3,323,102 to $3,561,144.
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CERTIFICATE OF INTERESTED PARTIES
FORM 1295
loft
Complete Nos. 1- 4 and 6 if there are interested parties.
OFFICE USE ONLY
Complete Nos.1, 2, 3, 5, and 6 if there are no interested parties.
CERTIFICATION OF FILING
Certificate Number:
1
Name of business entity filing form, and the city, state and country of the business entity's place
of business.
2024-1230270
Walker Partners, LLC
Waco, TX United States
Date Filed:
10/23/2024
ame of governmental entity or state agency that Is a party to the contract for whicfi & form Is
being filed.
Brushy Creek Regional Utility Authority
Date Acknowledged:
3
Provide the identification number used by the governmental entity or state agency to track or Identify the contract, and provide a
description of the services, goods, or other property to be provided under the contract
3.00867
Professional engineering services In connection with the Planning Level Evaluation - Phase 2A Water Treatment Plant Expansion.
4
Name of Interested Party
City, State, Country (place of business)
Nature of interest
(check applicable)
Controlling
I Intermediary
Walker, Jr., George E.
Waco, TX United States
X
5
Check only If there is NO Interested Party.
6
UNSWORN DECLARATION
My name is George E Walker, Jr and my date of birth is
My address is 823 Washington Avenue, Suite 100 Waco TX , 76701 US
(Street) (City) (state) (zip code) (country)
I dedwe under penalty of perjury that the foregoing is true and correct
Executed in McLennan County, State of Texas on the 23rd day of October 2024
(month) (year
Signature of affilhionzed agent of contra business entity
(Declarant)
Forms provided by Texas Ethics Commission www.ethics.state.tx.us Version V4.1.0.48da51f7
CERTIFICATE OF INTERESTED PARTIES
FORM 3.295
1 of 1
Complete Nos. 1- 4 and 6 if there are interested parties.
OFFICE USE ONLY
Complete Nos.1, 2, 3, 5, and 6 it there are no interested parties.
CERTIFICATION OF FILING
Certificate Number:
1
Name of business entity filing form, and the city, state and country of the business entity's place
of business.
2024-1230270
Walker Partners, LLC
Waco, TX United States
Date Filed:
10/23/2024
2
Name of governmental entity or state agency that Is a party to the contract for which the form is
being filed.
Brushy Creek Regional Utility Authority
Date Acknowledged:
10/23/2024
3
Provide the identification number used by the governmental entity or state agency to track or identify the contract, and provide a
description of the services, goods, or other property to be provided under the contract.
3-00867
Professional engineering services in connection with the Planning Level Evaluation - Phase 2A Water Treatment Plant Expansion.
4
Name of Interested Party
City, State, Country (place of business)
Nature of interest
(check applicable)
Controlling
Intermediary
Walker, Jr., George E.
Waco, TX United States
X
5
Check only if there is NO Interested Party. ❑
6
UNSWORN DECLARATION
My name is and my date of birth is
My address is I,
(street) (city) (state) (zip code) (country
I declare under penalty of perjury that the foregoing is true and correct.
Executed in County, Stale of on the day of 20
(month) year
Signature of authorized agent of contracting business entity
(Dedarant)
Forms provided by Texas Ethics Commission www.ethics.state.bcus Version V4.1.0.48da51f7