CM-2025-222 - 9/12/2025Supplemental Contract
0199.20202; 4933-7915-4787
Rev.06/16
84275
1
STATE OF TEXAS §
§
COUNTY OF WILLIAMSON §
SUPPLEMENTAL CONTRACT NO. 3
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: AGUIRRE & FIELDS, LP (“Engineer”)
ADDRESS: 12708 Riata Vista Circle, Suite A-109, Austin, TX 78727
PROJECT: Old Settlers Extension
This Supplemental Contract No. 3 to Contract for Engineering Services is made by and between
the City of Round Rock, Texas, hereinafter called the “City” and Aguirre & Fields, LP, hereinafter
called the “Engineer.”
WHEREAS, the City and Engineer executed a Contract for Engineering Services, hereinafter
called the “Contract,” on the 13th day of February, 2020 for the Old Settlers Extension Project in
the amount of $532,331.53; and
WHEREAS, the City and Engineer executed Supplemental Contract No. 1 on October 28, 2021
to amend the scope of services and to increase the compensation by $934,919.70 to a total of
$1,467,251.23; and
WHEREAS, , the City and Engineer executed Supplemental Contract No. 2 on March 28, 2024
to amend the scope of services and to increase the compensation by $178,285.80 to a total of
$1,645,537.03; 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 $74,080.00 to a total of $1,719,617.03;
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.
II.
Article 4, Compensation and Exhibit D, Fee Schedule shall be amended by increasing by
$74,080.00 the lump sum amount payable under the Contract for a total of $1,719,617.03, as shown
by the attached Addendum to Exhibit D.
CM-2025-222
Supplemental Contract
0199.20202; 4933-7915-4787
Rev.06/16
84275
2
IN WITNESS WHEREOF, the City and the Engineer have executed this Supplemental Contract
in duplicate.
AGUIRRE & FIELDS, LP
By:
Date
Oscar R Aguirre (Sep 5, 2025 16:31:47 CDT)
Oscar R Aguirre
Oscar R Aguirre President of Aguirre, LLC-GP
09/05/2025
Supplemental Contract
0199.20202; 4933-7915-4787
Rev.06/16
84275
3
CITY OF ROUND ROCK APPROVED AS TO FORM:
By:
Stephanie L. Sandre, City Attorney
Printed Name:
Title:
Date Signed:
Brooks Bennett (Sep 12, 2025 15:41:34 CDT)
Brooks Bennett
City Manager
09/12/2025
ADDENDUM TO EXHIBIT B
Engineering Services
The ENGINEER will provide the following supplemental construction phase services under this
agreement:
1. Additional time and effort required for bid questions and bid tab verification.
2. Additional time and effort required for construction submittal reviews.
3. Additional time and effort required for As-Builts.
4. Plan Revision #1 (Oasis Connection).
5. Change Order #1 (WL crossing Old Settlers and material changes).
6. Change Order #2 (WL depth revision due to new gas line).
ADDENDUM TO EXHIBIT D
Fee Schedule
Attached Behind This Page
AGUIRRE & FIELDS, LP
CONTRACT:
SWA 03 TO WA 01
ADDENDUM TO EXHIBIT D - SWA 03
FEE SCHEDULE
AGUIRRE & FIELDS, LP
CITY OF ROUND ROCK
OLD SETTLERS EXTENSION
PROJECT: OLD SETTLERS EXTENSION
METHOD OF PAYMENT: LUMP SUM
PRIME PROVIDER: AGUIRRE & FIELDS, LP
COMPANY FEE % OF TOTAL FEE
AGUIRRE & FIELDS, LP $42,080.00 57%
HALFF ASSOCIATES $32,000.00 43%
TOTAL $74,080.00 100.00%
PAGE 1 OF 1
PAGE 1 OF 1
AGUIRRE & FIELDS, LP
CONTRACT:
SWA 03 TO WA 01
ADDENDUM TO EXHIBIT D - SWA 03
FEE SCHEDULE
AGUIRRE & FIELDS, LP
CITY OF ROUND ROCK
OLD SETTLERS EXTENSION
PRIME PROVIDER NAME: AGUIRRE & FIELDS, LP
TASK DESCRIPTION
PROJECT
MANAGER
PROJECT
ENGINEER
ENGINEER
IN
TRAINING
SENIOR
ENGINEER
TECHNICIAN
CADD
OPERATOR
ADMIN /
CLERICAL
TOTAL
LABOR HOURS
& COSTS
FC 309 - CONSTRUCTION PHASE SERVICES
PRE-CONSTRUCTION
BID QUESTIONS & BID VERIFICATION 12 24 10 46
CONSTRUCTION
CONSTRUCTION SUBMITTALS REVIEW 14 40 32 86
CHANGE ORDERS 5 11 14 8 10 48
POST-CONSTRUCTION
AS-BUILTS/RECORD DRAWINGS 9 11 8 10 10 48
HOURS SUB-TOTALS 40 86 64 18 20 0 228
CONTRACT RATE PER HOUR $290.00 $195.00 $125.00 $195.00 $110.00 $100.00
TOTAL LABOR COSTS $11,600.00 $16,770.00 $8,000.00 $3,510.00 $2,200.00 $0.00 $42,080.00
% DISTRIBUTION OF STAFFING 17.5% 37.7% 28.1% 7.9% 8.8% 0.0%
SUBTOTAL (FC 309) $42,080.00
DESCRIPTION TOTAL MH BY FC TOTAL COSTS BY FC
FC 309 - CONSTRUCTION PHASE SERVICES 228 $42,080.00
SUBTOTAL LABOR EXPENSES 228 $42,080.00
SUMMARY
TOTAL COSTS FOR PRIME ONLY $42,080.00
NON-SALARY (OTHER DIRECT EXPENSES) FOR PRIME ONLY -
GRAND TOTAL FOR PRIME $42,080.00
PAGE 3 OF 3
AGUIRRE & FIELDS, LP
CONTRACT:
SWA 03 TO WA 01
ADDENDUM TO EXHIBIT D - SWA 03
FEE SCHEDULE
AGUIRRE & FIELDS, LP
CITY OF ROUND ROCK
OLD SETTLERS EXTENSION
SUB PROVIDER NAME: HALFF ASSOCIATES
TASK DESCRIPTION SR PROJECT
MANAGER
PROJECT ENGINEER GRADUATE
ENGINEER (EIT)
CONTRACT ADMIN
SPECIALIST
TOTAL
LABOR HOURS
& COSTS
FC 309 - CONSTRUCTION PHASE SERVICES
CONSTRUCTION
PLAN REVISIONS 12 8 20
CHANGE ORDERS 58 42 50 150
POST-CONSTRUCTION
AS-BUILTS/RECORD DRAWINGS 40 40
HOURS SUB-TOTALS 70 50 90 0 210
CONTRACT RATE PER HOUR $200.00 $180.00 $100.00 $85.00
TOTAL LABOR COSTS $14,000.00 $9,000.00 $9,000.00 $0.00 $32,000.00
% DISTRIBUTION OF STAFFING 33.3% 23.8% 42.9% 0.0%
SUBTOTAL (FC 309) $32,000.00
DESCRIPTION TOTAL MH BY FC TOTAL COSTS BY FC
FC 309 - CONSTRUCTION PHASE SERVICES 210 $32,000.00
SUBTOTAL LABOR EXPENSES 210 $32,000.00
SUMMARY
LABOR COSTS FOR SUB CONSULTANT $32,000.00
NON-SALARY (OTHER DIRECT EXPENSES) FOR SUB CONSULTANT -
GRAND TOTAL FOR SUBCONSULTANT $32,000.00