Contract - Plummer Associates, Inc. - 7/24/2025 +STATE OF TEXAS §
COUNTY OF WILLIAMSON §
SUPPLEMENTAL CONTRACT NO. 3
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: PLUMMER ASSOCIATES,INC. ("Engineer")
ADDRESS: 1320 S. University Drive, Suite 300, Fort Worth,TX 76107
PROJECT: BCRWWS East WWTP Expansion (Construction Phase Services)
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 Plummer Associates, Inc.,
hereinafter called the "Engineer."
WHEREAS, the City and Engineer executed a Contract for Engineering Services, hereinafter
called the "Contract," on the 9th day of April, 2020 for the BCRWWS East WWTP Expansion
(Construction Phase Services) Project in the amount of$4,931,846.00; and
WHEREAS, the City and Engineer executed Supplemental Contract No. 1 on the 14th day of
September, 2023 to amend the scope of services and to increase the compensation by$144,715.11
to a total of$5,076,561.11; and
WHEREAS, the City and Engineer executed Supplemental Contract No. 2 on the 22nd day of
February, 2024 to amend the scope of services and to increase the compensation by $250,000.00
to a total of$5,326,561.11; 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$1,456,058.00 to a total of$6;782,619.11;
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
$1,456,058.00 the maximum amount payable under the Contract for a total of$6,782,619.11, as
shown by the attached Addendum to Exhibit D.
Supplemental Contract Rev.06/16
0199.20209;4909-1472-6226 84275
1
IN WITNESS WHEREOF,the City and the Engineer have executed this Supplemental Contract
in duplicate.
PLUMMER ASSOCIATES,INC.
By:
�iQ1'.tlG s-P.QL
Date
Supplemental Contract Rev.06/16
0199.20209;4909-1472-6226 84275
2
CITY OF ROUND ROCK APPROVED AS TO FORM:
By:
Craig Mo an, lor Stephanie L. Sandre, City Attorney
1 k 4 1w zs
Date
Supplemental Contract Rev.06/16
0199.20209;4909-1472-6226 84275
3
ADDENDUM TO EXHIBIT B
Engineering Services
CITY OF ROUND ROCK
Brushy Creek Construction Services Additional Engineering Services
Task 1—RPR Services
Onsite Resident Project Representative(RPR)Services
1.1 During construction of the Brushy Creek Construction Phase Services, Plummer shall provide an
onsite resident project representative (RPR), in accordance with the CITY OF ROUND ROCK
recommendations, who shall review the work of the construction contractor and report to CITY OF
ROUND ROCK, the Construction Manager, and the construction contractor opinions of the
contractor's fulfillment of these recommended actions and adherence to the plans and
specifications. The RPR shall be project representative and shall endeavor to protect CITY OF
ROUND ROCK against defects and deficiencies in the work and to observe the work is carried out
in conformance with the plans and specifications. However, the RPR neither guarantees the
performance of the contractor nor assumes responsibility for the contractor's failure to perform work
in accordance with the contract documents. For budgeting purposes: Substantial Completion is
projected to be on September 30, 2025 and Final Completion is projected on December 31, 2025.
1.2 Resident Project Representative Services/Construction Manager
1.2.1 The RPR will be the primary point of contact and communication for all parties on the
Brushy Creek Expansion project.The RPR shall always have access to the Work whenever
it is in preparation or progress. The onsite project representative shall be provided as
described below:
1.2.1.1 Brushy Creek Construction Services RPR — Average 40 hours per week, for the
duration of the project until substantial completion of the project.
1.2.1.2 Brushy Creek Construction Services RPR—Average 8 hours per week,for the duration
of the project from substantial completion until Final completion of the project.
1.2.1.3 Brushy Creek Construction Services CM — Average of 24 hours per week for the
duration of the project and EIT-Average of 18 hours per week until Final completion of
the project.
1.3 Construction Administration
1.3.1 Plummer will provide the following services for this amendment to the contract:
1.3.1.1 Prepare weekly meeting agendas and minutes.
1.3.1.2 Review and submit logs such Submittals, RFI, Schedules, etc. used to track progress
of the project.
1.3.1.3 Attend weekly meetings and site visits by the CM and RPR.
1.3.1.4 Plummer will continue to track Punchlist items documented in Projectmates.
1.3.1.5 Plummer will support Round Rock on final pay estimates and project close out
documents.
1.3.1.6 Plummer has allowed 24 hours for support for final change orders as required by
contract.
1.4 Construction Observation
1.4.1 Field Observation: The onsite RPR will provide field observation for conformance of the
contractor's work with plans and specifications and notify the contractor and City of Round
Rock of any observed nonconforming work and monitor the progress of the contractor's
corrective actions. The onsite RPR shall not be responsible for means, methods,
techniques, sequences, or procedures of construction selected by the contractor or the
safety precautions and programs incident to the work of the contractor.
1
1.4.2 Project Documentation: The RPR will maintain daily reports, including project progress,
notes, photos, videos, for monitoring and documenting the observed work in a field report
for each visit.The daily report will include notes on personnel onsite, observed construction
activities, and testing agencies. RPR report is attached to this scope of work.
1.4.3 Exclusions: Plummer hereby excludes any work not specifically listed above such as as-
built drawings, construction administration, or Engineer of Record duties. Plummer has
not included additional time for arbitration of change orders beyond substantial completion.
Task 2—Engineering Support
2.0 Engineering Support
2.1 Plummer to provide engineering support through substantial and final completion of the
project. Project Engineering Manager will be available 8 hours per week until substantial
completion. From the substantial and final completion of the project, the engineer will be
available 8 hours per month.
2.2 Plummer's Electrical subconsultant provides additional services as stated in the Fee
Schedule
Task 3—PLC/HMI Programming and Field Verification Services
3.0 Programing & Field Checkout Services, PLC and HMI Modifications and Additional Scope
3.1 Field Checkout & Startup: Plummer to provide Field Checkout and Commissioning
services, in addition to modifications to the PLC and HMI programs for the remaining
areas of work for the following items:
3.1.1 Area 400: Plummer to provide field checkout services for Train 1 Aeration,
Basins 1 & 2. This includes making communications with the mixers,
testing the 1/0, configuring the VFDs, testing the control loops, debugging
any PLC logic, and providing any updates to the HMI system
3.1.2 Area 400: Plummer to provide field checkout services for Train 1 Aeration,
Basins 3 & 4. This includes making communications with the mixers,
testing the 1/0, configuring the VFDs, testing the control loops, debugging
any PLC logic, and providing any updates to the HMI system
3.1.3 Area 400: Plummer to provide field checkout services for Train 2 Aeration,
Basins 1 & 2. This includes making communications with the mixers,
testing the 1/0, configuring the VFDs, testing the control loops, debugging
any PLC logic, and providing any updates to the HMI system
3.1.4 Area 400: Plummer to provide field checkout services for Train 2 Aeration,
Basins 3 & 4. This includes making communications with the mixers,
testing the 1/0, configuring the VFDs, testing the control loops, debugging
any PLC logic, and providing any updates to the HMI system
3.1.5 Area 500: Plummer to provide field checkout services for Influent Lift
Station ILS2. This includes providing communications to the replaced or
repaired VFDs, decommissioning temporary motor starters, and making
replacements to the HMI database to restore the proper addressing of
these systems
3.1.6 Area 550: Plummer to complete field checkout services for the Alum Feed
Systems at the Chemical Building. This includes the time required to field
test the 1/0, configure the VFDs, configure and tie-in to ethernet devices,
test and debug PLC code, and verify HMI database and screens.
3.1.7 Area 650 RAS/WAS: No items
3.1.8 Area 750 Reuse System: No Items
3.1.9 Area 800 East Electrical Building: Plummer to field test 1/0, configure
VFDs for communication to the PLC, configure and test ethernet
instrumentation, field test control loops, provide any required PLC code
2
changes and make data available to the HMI, as well as modify any links
to the HMI to make them available
3.1.10 Area 1100 Sludge Storage Tanks: Plummer to field test 1/0, configure
VFDs for communication to the PLC, configure and test ethernet
instrumentation, field test control loops, provide any required PLC code
changes and make data available to the HMI, as well as modify any links
to the HMI to make them available
3.1.11 Area 1350 Dewatering Building: Plummer to field test 1/0, including
confirmation of hopper level signals and flowmeter level signals on belt
presses 3 &4. Verify HMI data is reported correctly
3.1.12 Area 1500 Chemical Building: Plummer to field test 1/0, including
confirmation of all control loops, and other ethernet devices. Plummer will
field test and update PLC code and remap any tags required for the HMI
3.2 Additional Scope:Additional scope requested by Operations is as follows:
3.2.1 Tablets: Plummer will procure, install and configure Tablets, with wall
mounts for remote display and control of new PLC cabinet areas that
replace the older model touch screen panel displays. Tablets will be
installed in the following areas:
3.2.1.1 New Blower/ ILS2 Electrical Room
3.2.1.2 Central Electrical Building
3.2.1.3 North Electrical Building
3.2.1.4 East Electrical Building
3.2.1.5 Dewatering Building
3.2.1.6 Trains 1 and 2 RAS WAS Building
3.2.1.7 Reuse Electrical Building
3.2.1.8 Spare
3.2.2 Database Tags: Update database tags for consistency
3
ADDENDUM TO EXHIBIT C
Work Schedule
Attached Behind This Page
ID Task Task Name Baseline Start Half 1,2024 Ha 4 Half 1,2025 1 Half 2,2025
Mode _. D 1 F -M A M_ J - 1 A_ S__O_ND_1 F MA M_ J i A N
1 Construction Project Management Mon 3/30/2
2 1 0.Pre-Construction Activities Mon 3/30/20
3 Engineers Notice to Proceed from City Coun Mon 3/30/20 i
4 04 Pre-Construction Meeting Tue 3/31/20
5 General Contractors Mobilization Wed 4/1/2C
6 1.Engineering Services During Construction Wed 4/15/20
7 Monthly Engineer Site Visits Thu 5/28/20
41 At Special Engineer Inspections(as arranged Fri 5/1/20
by CM)
55 Preselected Equipment Coordination(as Fri 5/1/2C
directed by CM)
56 Engineer assistance with Submittal Reviews Wed 4/15/20
and any associated document control or
processing(RFIs,CMRs and PCMs)
57 2.Onsite Management&Admin Services Mon 3/30/2
58 Submittal Reviews and any associated Mon 3/30/20
document control or processing(RFIs,
59 Site Visit Coordination Mon 3/30/2(
60 Construction Observation Documentation Mon 3/30/2(
61 Monthly Construction Progress Meetings Wed 5/6/21
97 Monthly Progress Reports Fri 4/24/21
135 Monthly Pay Estimate Reviews Mon 5/4/21
172 Testing&Special Inspections Mon 6/1/21
173 >< Milestone Substaintial Completion Review: Mon 6/1/2
174 >♦ NTP Construction Activities on Site Mon 6/1/21
175 Phase 1-Early Improvements Mon 6/1/21
176 Phase 2b-New Treatment Train& Mon 6/1/21
Associated Facilities substaintial
177 Phase 3-Modification to Aeration Basin- Mon 6/1/2, I
178 Phase 4-Project substaintial completion Mon 6/1/21 j 9/30
except for phase 5
179 Phase 5-Mods to Aeration Basin Train 1 Mon 6/1/2 �� 9/30
and conversion from gas to liquid Cl feed
180 Final Completion Mon 6/1/2
181 3.Post Construction Services Mon 6/1/2
182 Engineer Substantial Review N.
183 Engineer Final Completion Review
184 Start-up Services Mon 6/1/
185 Phase 1-Early Improvements Mon 6/1/2 ---- - — ---
186 Phase 2a-New Treatment Train& Mon 6/1/2
Associated Facilities
187 0 Phase 3-Modifications to Aeration Basin Mon 6/1/2
Train 2&New UV
188 1 Phase 4-Project Substaintial Completion Mon 6/1/2 �j 9/30
189 Phase 5-Modifications to Areation Basin Tue 6/2/2 �j 30
Train 1 and conversion from gaseous to
liquid chemical feed
i
190 l Final Completion Mon 6/1/2
191 l Record"As-built'Drawings Fri 1/6/2
192 e' O&M Manual Assembly Fri 1/6/2 111111111
193 r 4.Project Management and Quality Assuranc Mon 3/30/
Task — Summa, Manual Progress
Project:Plummer Construction
Date:Thu 6/5/25 Split Project 1
Milestone Inactive
ADDENDUM TO EXHIBIT D
Fee Schedule
Attached Behind This Page
City of Round Rock
Brushy Creek Expansion to 30 MGD-Amendment 3 Construction Phase Services
Exhibit D
Snr Electrlcal
Principal Pro)Mgr Eng. 1 Cons Mgr RPR EIT Programmer Total Labor Sub.and Expanses Total Fee Percent of
(bra) (hrs) I (hrs) (bra) I (hrs) I (his) I (hrs) Naun Fee(S) FNI Expanses (S) Total Fee
1 Resident Project Representative and Construction Management 96 157 34 622 2,390 960 0 4,459 f 716,27S f 136,347 S 52,923
$ 907,545 63
11 Unb,lled amount through April 18,2025 24 157 34 198 1,494 480 0 $ 388,355 S 138,347 $ 8,923 f 535.625
Planned hours from April 19,2025 through to Substantial Completion
1 2 (Sept 2025-20 Wks) 40 0 0 480 800 360 0 $ 299,600 $ 33,000 $ 332,600
Planned hours from Substaintial Completion to Final(December 2025-12
1.3 Wks) 32 0 0 144 96 120 0 f 78,320 $ 11,000 $ 89,320
1.4 Credit 0 0 0 0 0 0 0 $ (50,000) f (50,000)
2 Engineering Support Services 37 270 0 0 0 205 0 512 f 110,755 f 109,458 $ f 220,213 15
2.0 Unbilled amount through April 18,2025 5 62 0 0 0 205 0 E 47,875 f 109,458 S 157,333
Manned amount from April 2025 through to Substantial Completion
21 (September 2025-20 wk.) 20 160 0 0 0 0 0 f 46,800 f 46,800
Planned hours from Substaintial Completion to Final(December 2025-12
22 Wks) 12 48 0 0 0 0 0 $ 16,080 $ 16,080
3 PLC/NMI Programming and Field Verification Services 0 35 160 0 0 0 1,394 1,589 f 300,700 f f 20,700 $ 321400
3.0 Unbilled amount through April 18,2025 0 3 0 0 0 0 510 513 E 90,000 E - E 90,000 6%
3.1 Field Checkout d Startup 0 30 160 0 0 0 B00 990 $ 195,500 $ - $ 195,500 13%
3 2 Additional Scope'Provide and Configure Tablets 0 2 0 0 0 0 84 86 E 15,200 E 20,700 E 35,900 2
TOTAL LABGR
Total Labor Hours 133 462 194 522 2,390 1,165 1,394 6,560 S 1,127,730.00 L 1,449,157.70
Labor Rates per Hour $340 $250 $300 $250 $140 $150 $175
To Amounts ry by Labor Category S 45,305 f 115,500 $ 58,200 $ 205,500 $
334,600 $ 174,675 $ 243,950 S 1,127,730 f 247,805 $ 73,623 $ 1,449,158
Labor CategoPercent of Total Labor 4.0% 10.2% 5.2% 18.2% 129.7% 15.5% 21.BY. 77.8%
TOTAL
Total SuDconaunanta S 247,805
Total Relmbursables $ 80.523
GRAND TOTAL- $ 1,456,058
SUBCONSULTANT EXPENSES REIMBURSABLE EXPENSES•Additional
Code Description Budget(SS) Markup Fes SSS Code Budget($$) Markup 1 Fee($$$)
CA Architect Consultant $ 1.10 S RA Laborato Anal is 1 15 $
CC Cnril En r Consultant $ 1.10$ RC TeUnd Tadet f 24,000 1.15 E 27,60
CE Electnul Consultant f 225,277 1.10 $ 247,806 _ RH Hirtoncel 1.15 _ $
CG Geotechnical Consultant Iunder Phase 1.5 S - 1.10 f - RI In-House Reproduction _ 1.15 S
CM Mechanical Consultant f - 1.10$ - RL Lon D stance,Tel ph ne 1.15 f -
_..__.. .._. _
CO 10therComaittiml $ 1.10 f RM Employee Mileage 1 1.15 1$ -
CS Structural Consultant S 1.10 f RO 10ther Software Expenses 1 15 _ $ -
CV Survering Consultant $ 1.10 S RP Purchased Services 1 15 S -
C1 $ 1.10 f RR Reproduction 1.15 $
C2 $ 1.10 $ RS Shi in,Deli Pons a 1.15 $ -
C3 $ 1.10 $ RT Travel,Mesls,Lod S 40,000 1.10 $ 44,000
C4 $ 1.10 f RU Telecanmumcabons 1.00 f -
CS S 1.10E Rt 30 Scanning E ui ant 1.15 f
CB $ 1.10 f R2 Unbilled Travel f 7,759 1.15 f 8,923
ALftWWMCCNKLTANT 6gOMWA 6 S 947 806 l7ML IIHIMYR6ASL! S 71,7n f 10,623
P",—,
.1-1 CrosM Re91on V2wTP-Amendment 7 Hnsi��a�.i�n. Prp-apt Fe.spmma __ Bae1c Servlcss
112812025 Bpe�ini tia...• a1 Sev�css
Dslelled Cost Breakdown
Tasks Labor Ea enEM TsW
851 laps 1tu0aaie of tags Teak D.—.pt—, oral Hous T-1 I-' Tech Cnarga Mine. (NMa Tolsl Eal»nss Totel Effort
ort
p.o1u�1 He1on ,p mai EffEffort
S S
f 5
T.ks 1.2 Month ENe Vlslb I 5 Hwn Eat S 5
Noventer2023 toDM'12013 2VWts 23 23 46 S 8.148 41, 391 $ 9,139
Jams 2024 W Decartw 2024 8-WC-1I SIW. 97 127 219 3 43.242 211 _ 1.51 f 450%
An 2025 6 Vons 69 69 138 $ 26.244 136 600 250 1 881 f 28125
$ 5 3
$ 5 $
Task 1.2 BiMeek EIB Malls 65 Hwrs Fa,W $ 5 3
Noven�an 2023 b Deeenta 2023 3 Visn�: 2C 20 39 S 1417 39 3 332 f 7.748
Janua 20 4 b Dsc4rrtr 2024 13 Visilai 85 85 169 $ 32 139 161 5 1 437 S 33.576
AnIK ted 2025 10 VIv1. 65 fi5 130 $ 24 723 130 1 000 500 5 2 380 27.103
E 5 f
S 5 S
Task 1.E Re wsh for Inlorme8on 9 Hwr.Each f S $
NuvenIM 201310 Dw:sntw 2013 less. 9 18 5 3423 16 5 153 $ 3,576
J.— 2024 b Dsrwndr 2024 10-Mc—'5 Snustel 45 135 $ 23 471 135 5 1 148 $ 24 618
Antic tw 2025 8lssuss 1+J $ 27 385 141 691 300 5 2 057 $ 29442
$ S E
$ 5 $
Task 61 OmMv Atsuance/Pr act Maw• snt $ $ S
November 2023 w Dmemt-2023 4 $ 1-m S 77-1 427
Janua 2024 tn Decanter 2024 27 $ 9A03 5 230 $ 9 633
A—pl.2025 16 S 5655 S 136 $ 5.791
E 5 f
5 S $
3 4 E
Total Mou./Owntlt #4 =
514 41 E I.OEE 1.015 1.29] 1,050
T..l Effon f 74,000 S 122.M S 14,279 f 2.17] f 211.24] f 9,21E S 1,80E f 1.208 S 12.0]4 S 22527]
IdI hft :Jneeomyle,"M.canI—nAld-e_eunn.ayecam/DeralmenWD—WWECE Cme dw Fee Ed1mdNAmendmeM 3-Cade,TI—O e,,1-17-202WE Wp-Cad as Maur Tyk Erykdown.Aw 1/2812025