Addendum _1 (1).pdf

PDF 1 MB Posted Sep 1, 2026

Attached to: Tarrant County Water Supply Project - Ozone Generator - Preselection Package Requests
Solicitation number: 7002.2056
Issued by: Dallas County, Texas

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Written by GovTribe AI · Sep 3, 2026

This is Addendum No. 1 to a preselection package for the Trinity River Authority of Texas, issued on August 14, 2026, pertaining to Contract No. 25-030 for the Fourth Ozone Generator and Transfer Pump Station Upgrades at the Tarrant County Water Supply Project (Project No. 7002.2056). The addendum modifies the specifications and drawings for the ozone generation equipment and related control systems. The addendum consists of three pages and includes two revised drawings: Drawing N00-101 (Ozone Generator PCS System Architecture Modified) and Drawing N10-101 (PID - Ozone Generator #4). These drawings detail the instrumentation, control architecture, and process integration requirements for the ozone generator system, including fiber optic communications infrastructure connecting multiple remote terminal units (RTUs), programmable logic controllers (PLCs), and SCADA components across various facility buildings and structures.

The addendum adds a specification requirement to Section 00 21 16 (Instruction to Proposers) stating that all submitted proposals are subject to public inspection under the Texas Public Information Act, with proposers waiving claims for information protection by submission. The revised specifications and drawings establish that the contractor shall provide all required network connections, communication cabling, configuration, and PCS/SCADA integration for complete system operation. The ozone generator is identified as a vendor-supplied package, with the vendor responsible for providing, programming, installing, and commissioning the PLC system per Division 40 specifications. The project indicates a phased implementation approach, with PLC-MOCP (Modular Ozone Control Panel) initially connecting only to Generator 4, with subsequent connection of Generators 1-3 as they are replaced, and eventual demolition of the existing LCP-OSCP enclosure once all generators are upgraded.

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Preselection Package Request for Proposals Ozone Generators.pdf	PDF	Sep 1, 2026

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TRINITY RIVER AUTHORITY OF TEXAS Fourth Ozone Generator and Transfer Pump Station Upgrades December 8, 2025 TEMPLATE TRA Contract No. 25-030 Addendum No. 1 8/14/2026

TRINITY RIVER AUTHORITY OF TEXAS

TARRANT COUNTY WATER SUPPLY PROJECT

OZONE GENERATOR - PRESELECTION PACKAGE REQUESTS

PROJECT NO. 7002.2056

CONTRACT NO. 25-030

ADDENDUM NO. 1

August 14, 2026

TO: All plan holders of record

This Addendum forms part of the Preselection Package Documents and modifies the Specifications and Drawings as noted below. In order to submit a Proposal on the electronic form on CIVCAST, each Proposer must download all Addenda and by doing so has acknowledged all Addenda and will be allowed to submit an online Proposal.

This Addendum consists of 3 pages, including attachments.

DRAWINGS

A. Drawing No. N00-101 OZONE GENERATOR PCS SYSTEM ARCHITECTURE

MODIFIED

1. ADD this drawing in its entirety with the attached document.

B. Drawing No. N10-101 PID – OZONE GENERATOR #4

1. ADD this drawing in its entirety with the attached document.

SPECIFICATIONS

A. Section 00 21 16 Instruction to Proposers

1. ADD Paragraph 1.01.I. as follows:

“I. All responses that have been submitted shall be open to public inspection. By submission of its Proposal, each Proposer conclusively waives any claim that may protect information contained in the Proposal from disclosure under the Texas Public Information Act.”

8/14/2026

12-STRAND

OM1 FIBER

RTU 42 RTU 41

(TRANSFER PS #1)

RTU 27 RTU 45

(LCP-WEST)

RTU 29

(COAG)

RTU 39

(BULK STORAGE)

FIU-1600

MASTER

RADIO

(MDS 9790)

RTU 32

(RTU 2)

RTU 30

(HI SERVICE)

RTU 33

(RTU 3)

RTU 34

(RTU 4)

RTU 35

(RTU 5)

RTU 36

(RTU 6)

RTU 26

(FILTER PLANT EAST)

RTU 40 (LCP-SED)

(TRANSFER PS #2) (CAUSTIC)

ETHERNET SWITCH

FIBER OPTIC PATCH

PANEL

PROGRAM TAG

(FIELD TAG)

LEGEND

RTU 38 (RTU-0009)

FO FO FO FO

MULTINET

MAIN SWITCHGEAR

NETWORK SWITCH

FO FO

TO REMOTE SITES

BACKBONE

SWITCH A

NETWORK

ENCLOSURE

FIU/ FILTER PLANT WEST

RTU 1 ENCLOSURE

ELECTRICAL BUILDINGCAUSTIC BUILDING

TRANSFER PUMP STATION NO.1

CONTROL

FOPPTPS NO.1 RTU ENCLOSURE

FO FO FO FO FO FO FO

TRANSFER PUMP STATION NO.2

CONTROL

FOPPTPS NO.2 RTU ENCLOSURE

OZONE GENERATOR BUILDING

CONTROL FOPP

ELECTRICAL ROOM

CHEMICAL BULK STORAGE

FACILITIES CHEMICAL BUILDING

LCP-COAG ENCLOSURE

(BOTTOM FLOOR)

RTU-38 ENCLOSURE

(TOP FLOOR)

RTU 28

(LCP-H202)

LPC-H202

ENCLOSURE

EAST FILTERSWEST FILTERS

RTU 31 (RTU 2)

FO FO FO FO FO FO FO FO FO FO FO FOFO FO

FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO

LCP-OSCP

ENCLOSURE

OZONE GEN 1

ENCLOSURE

PLC-GEN1

FO FO

LCP-BLO

ENCLOSURE

BLOWER BUILDING

FO FO FO FO

LCP-BASIN

ENCLOSURE

OZONE CONTACTORS

LCP-DEST 1

ENCLOSURE

LCP-DEST 2

ENCLOSURE

FOPP DEST

ENCLOSURE

ADMIN

BUILDING

FO FO FO

BASEMENT

TOP FLOOR

MOTOROLA ACE RTU

MODICON RTU

ALLEN BRADLEY SLC

PLC

FO FO FO FO

24-STRAND

OM1 FIBER

FO FO FO FO FO FO FO FO

24-STRAND

OM1 FIBER

12-STRAND

OM1 FIBER

6-STRAND

OM1 FIBER

12-STRAND OM1

FIBER

12-STRAND

OM1 FIBER

24-STRAND

OM1 FIBER24-STRAND

OM1 FIBER

FO FO FO

24-STRAND

OM1 FIBER

HIGH SERVICE

ENCLOSURE

FILTER PLANT EAST

ENCLOSURE

FILTERS 5-8

ENCLOSURE

FILTERS 9-12

ENCLOSURE

FILTERS 13-16

ENCLOSURE

FILTERS 17-20

ENCLOSURE

FILTERS 21-24

ENCLOSURE

FILTERS 1-4

ENCLOSURE

RIO 38 (RTU-0012)

RTU-0012 ENCLOSURE

(TOP FLOOR)

RTU XX=

(RTU X)=

24-STRAND

OM1 FIBER

12-STRAND

OM1 FIBER

RTU-39 ENCLOSURE

CONTROL

FOPP

FO FO FO FO

24-STRAND

OM1 FIBER

FO FO FO FO FO

12-STRAND

OM1 FIBER FO

FO FO

6-STRAND

OM1 FIBER

6-STRAND

OM1 FIBER

FO FO FO FO FO FO

RDP REMOTEiFIX USERS CONTROL ROOM DMZ FIREWALL

ENTERPRISE

FIREWALL

TCCLT2 LASER

PRINTER

(TCWEB1)

DMZ REPORT

DATABASE SERVER

(TCHIS1)

HISTORIAN

SERVER

(TCTS1)

TERMINAL

SERVER

(TCSVR2)

IFIX REDUNDANT

PCS SERVER

(TCSVR1)

IFIX REDUNDANT

PCS SERVER

(TCHIS1)

DMZ HISTORIAN

SERVER

OPERATIONS BUILDING

SERVER ROOMLAB

TCXXX

LCP-RAW 1

ENCLOSURE

RAW WATER OZONE BUILDING

LCP-DEST 3

ENCLOSURE

LCP-DEST 4

ENCLOSURE

TCCLT1TCDEV1 LASER

PRINTER

TCCLT3VARIOUS WS

FOC1

FOC1FOC1FOC1FOC1FOC1FOC1FOC1FOC1FOC1 FOC1FOC1FOC1FOC1FOC1

FOC1

1- 1A

C 2B

FOC2FOC2

FOC2FOC2FOC2 FOC2FOC2FOC2FOC2FOC2

FOC2

FOC2 FOC2

FOC2

FOPC2A

FOPC2B

FOPC2-1A

FOPC2-1B

FOC2-1FOC2-1-1 FOC2-1

FOPC1BFOPC1A FOPC1BFOPC1A

12-STRAND

OM1 FIBER

FOPC1A

FOPC1-1B

FOPC1B

FOC1-1

FOPC1-1A

FOPC1C

FOPC1D

FOC3 FOC3

FOPC3BFOPC3A

FOPC2A

FOPC2B

FOPC4A

FOPC4B

FOC4

FOPC1C

FOPC1D

FOPC1-1A

FOPC1-1B

FOPC2C

FOPC2D

FOPC1BFOC1

1- 1A

1- 1B

FOPC3A

FOPC3B

FOPC1B

FOPC2B

FOPC1C

FOPC1D FOPC4B

FOPC1-1B

FOPC2D FOPC3B

BACKBONE

SWITCH B

12-STRAND

OM1 FIBER

FOPC4BFOPC4A

FOPC2B

FOPC2A

FOPC2BFOPC2A

UPS

ENCLOSURE

MULTINET

24-STRAND

OM1 FIBER

FOPC2BFOPC2A

UPS

FOPC2A

FOPC2B

UPSFOPC2A

FOPC2B

24-STRAND

OM1 FIBER

UPS

FOPC2-1-1BFOPC2-1-1A

UPS

ENCLOSURE

FOPC21B

FOPC21A

UPS

FOPC2A

FOPC2B

OIT-F1

OIT-F2

OIT-F3

OIT-F4

UPS-31

OIT-31

FOPC1BFOPC1A

UPS

FOPC1BFOPC1A

OIT-F9

OIT-F10

OIT-F11

OIT-F12

OIT-33

FOPC1BFOPC1A

OIT-F17

OIT-F18

OIT-F19

OIT-F20

OIT-35

FOC1

12-STRAND

OM1 FIBER

12-STRAND

OM1 FIBER

12-STRAND

OM1 FIBER

12-STRAND

OM1 FIBER

12-STRAND

OM1 FIBER

UPS-33 UPS-35

FOPC1BFOPC1A

OIT-F5

OIT-F6

OIT-F7

OIT-F8

OIT-32

FOPC1BFOPC1A

OIT-F13

OIT-F14

OIT-F15

OIT-F16

OIT-34

OIT-F22

OIT-F21 OIT-F23

OIT-F24

OIT-36

FOFOC1

FOPC2B

FOPC2-2A FOPC2-2A

FOPC2-2B

FOC22FOC22

OIT-27

OIT-26

UPS

FOPC2A

FOPC2-2B

FO FO FO FO

FO FO FO FO OM1 FIBER

FOMFOPPFO

HIPSWITCH

FOC = FIBER OPTIC CABLE (BULK CABLE)

FOPC = FIBER OPTIC PATCH CABLE

FO FO FO FO FO FO FO

24-STRAND

OM1 FIBER

FOC2-1

FOC2-1-3

FOC2-3 FOC2-2

UPS-36UPS-34UPS-32UPS-26

24-STRAND

OM1 FIBER

FOC2

TPS ELECTRICAL ROOM

FOPC1-2A

OZONE GEN 2

ENCLOSURE

PLC-GEN2

OZONE GEN 3

ENCLOSURE

PLC-GEN3

OZONE GEN 4

ENCLOSURE

PLC-GEN4

FO FO FO FO FO FO FO FO FO

GENERAL NOTES:

1. CONTRACTOR SHALL PROVIDE ALL REQUIRED NETWORK CONNECTIONS, COMMUNICATION CABLING, CONFIGURATION, AND PCS/SCADA INTEGRATION REQUIRED FOR COMPLETE OPERATION OF THE SYSTEMS SHOWN.

KEYED NOTES:

1. VENDOR-SUPPLIED PLC SYSTEM. PLC SYSTEM SHALL BE PROVIDED, PROGRAMMED, INSTALLED, AND COMMISSIONED BY EQUIPMENT VENDOR.

PROVIDE PLC SYSTEM PER DIVISION 40 SPECIFICATIONS.

2. PLC ENCLOSURE FOR GENERATORS 1, 2 AND 3 TO BE UPGRADED AS DESCRIBED IN SPECIFICATION SECTION 00 42 13 PROPOSAL.

3. PLC-MOCP TO CONNECT ONLY TO GENERATOR 4 PLC INITIALLY.

4. AS GENERATORS 1-3 ARE REPLACED THE NEW GENERATORS WILL BE CONNECTED TO PLC-MOCP. ONCE ALL GENERATORS ARE REPLACED, LCP-OSCP ENCLOSURE TO BE DEMOLISHED.

MOCP

ENCLOSURE

(ELECTRICAL

ROOM)

PLC-MOCP

FOC2

PLC-OSCP

NITROGEN BOOST SYSTEM

(VENDOR PLC)

PLC-BLO

PLC-DEST1 PLC-DEST2

PLC-BASIN

PLC-RAW1 PLC-DEST3 PLC-DEST4

CAT-6

BIDDING, OR PERMIT PURPOSES

NOT INTENDED FOR CONSTRUCTION,

DOCUMENT IS FOR INTERIM REVIEW AND

, P.E.

TEXAS LICENSE NO.

DATE

128681

SURENDRA BAROT

AUGUST 14, 2026

N00-101.dwg

INSTRUMENTATION AND CONTROL

OZONE GENERATOR

PCS SYSTEM ARCHITECTURE MODIFIED

AHS

N00-101

DESIGN

GRAPHICS

CHECK

REGION

SYSTEM

CONTRACT NO.

PROJECT ID NO.

CADD FILE NAME

DATE

TARRANT COUNTY WATER SUPPLY

PROJECT

FOURTH OZONE GENERATOR

AND TPS UPGRADES BID PACKAGE 1

WWW.AECOM.COM

TBPELS REG. NO. F-3580

AECOM TECHNICAL SERVICES, INC.

13355 NOEL ROAD, SUITE 400

DALLAS TEXAS 75240

Fi le

: C :\U se rs

\a ha sa n\

D C

\A C

C D oc s\

O M

\C I-A

(U S)

-6

_F O

G _T

\P ro je ct F ile s\

\2 0-

0\ N

-1

Pr e-se le ct io n.

dw g

Pl ot

T im e:

A ug

3, :2 7p m A

H as an

SHEET NO.

PAGE NO.

NORTHERN

TCWSP

AUGUST 2026

25-030

60759505

GASEOUS OXYGEN

FROM VAPORIZER

DISTRIBUTION

FROM NON-POTABLE

WATER SUPPLY

MANIFOLD

NON-POTABLE

WATER FROM OZONE

GENERATORS

TO NON-POTABLE

WATER RETURN TO

IMMEDIATE OZONE

CONTACTOR

INFLUENT CHANNEL

FROM OZONE

GENERATOR NO. 3

FROM OZONE

GENERATOR NO. 1

OZONATED FEED GAS

TO RAW WATER

OZONATED FEED GAS

TO CONTACTORS

OZONE GENERATOR 4 CONTROL PANEL (PLC-GEN 4)

OZONE

GENERATOR

POWER SUPPLY

UNIT 604

PSH

FSL

ZSL

ZSH

PCV

PIT

FIT

PSL

PIT

TIT

OUTSIDE

DRAIN

6402A

6402B

OO HS

6402C

POWER ADJ

PIT

TIT

6403 TSH

AIT

C T

OZONE ANALYZER

VENT TO

ATMOSPHERE

TIT

TSH

FSL

ZSL

ZSH

ZSL

ZSH

LCP-GEN4 (VENDOR SUPPLIED)

Y C

O M

Y C

O M

REFRIGERANT LOOP

TIT

FROM OZONE

GENERATOR NO. 2

N E

C O

N C

N E

C H

R E

N E

C H

N E

O R

O N

O R

T O

R E

T O

W C

O N

T O

O N

T O

E C

O N

S U

R E

S U

E O

S U

E C

C O

N G

H T

N E

E C

N E

E O

N E

G E

E C

N E

G E

E O

N E

G E

E O

O R

C H

L O

W F

C H

U R

O R

W F

N E

C H

H T

U R

E O

M D

R E

O N

W H

R E

O R

O P

N E

C H

N E

C H

U R

O R

N E

H W

N E

C H

R E

N E

C O

N C

H T

C H

T D

H H

E O

M D

E O

M D

NON-POTABLE WATER SUPPLY INLET O2 SUPPLY INLET TO GEN OZONE GENERATOR

OZONE GEN COOLING DISCH WATER

OZONE FEED VALVE OZONE PURGE VALVE

1. THE OZONE GENERATOR IS A VENDOR-SUPPLIED PACKAGE, AND INTERNAL INSTRUMENTATION, DIAGNOSTICS, AND PROTECTIVE DEVICES NOT SHOWN SHALL BE PROVIDED BY THE

MANUFACTURER IN ACCORDANCE WITH CURRENT INDUSTRY STANDARDS.

2. ONLY INSTRUMENTATION AND SIGNALS EXPLICITLY SHOWN ON THIS DRAWING ARE REQUIRED TO BE INTEGRATED WITH THE OWNER’S PLC/SCADA SYSTEM. ADDITIONAL INTERNAL VENDOR DIAGNOSTICS AND STATUS SIGNALS MAY REMAIN LOCAL TO THE OZONE GENERATOR CONTROL PANEL UNLESS OTHERWISE DIRECTED BY THE OWNER.

3. EQUIPMENT PROTECTION FUNCTIONS MAY BE IMPLEMENTED VIA HARDWIRED DEVICES, VENDOR PACKAGE LOGIC, OR PLC LOGIC, AS APPROPRIATE. FINAL PROTECTION PHILOSOPHY SHALL

BE COORDINATED WITH THE OZONE GENERATOR MANUFACTURER AND APPROVED BY THE OWNER.

4. COMMUNICATION BETWEEN THE OZONE GENERATOR CONTROL PANEL AND THE PLANT PLC/SCADA SYSTEM SHALL BE VIA ETHERNET TCP/IP OR APPROVED INDUSTRIAL PROTOCOL. FINAL PROTOCOL SELECTION AND NETWORK ARCHITECTURE SHALL BE COORDINATED WITH THE OWNER AND OZONE GENERATOR MANUFACTURER.

5. INSTRUMENT RANGES, MATERIALS, ACCURACY, AND FINAL SELECTION SHALL BE CONFIRMED DURING SHOP DRAWING REVIEW BASED ON VENDOR RECOMMENDATIONS AND PROCESS

REQUIREMENTS.

6. INFORMATION SHOWN IS TYPICAL OF GENERATORS 1 THROUGH 4.

GENERAL NOTES

T O

E H

T O

AIT

AMBIENT AIR

OZONE ANALYZER

C O

N C

R O

E C

O N

N E

C O

N C

R M

N E

NITROGEN

INJECTION FROM

NITROGEN BOOST

SYSTEM

N10-101

INSTRUMENTATION AND CONTROL

PID - OZONE GENERATOR #4

AHS

N10-101

DESIGN

GRAPHICS

CHECK

REGION

SYSTEM

CONTRACT NO.

PROJECT ID NO.

CADD FILE NAME

DATE

TARRANT COUNTY WATER SUPPLY

PROJECT

FOURTH OZONE GENERATOR

AND TPS UPGRADES BID PACKAGE 1

WWW.AECOM.COM

TBPELS REG. NO. F-3580

AECOM TECHNICAL SERVICES, INC.

13355 NOEL ROAD, SUITE 400

DALLAS TEXAS 75240

Fi le

: C :\U se rs

\a ha sa n\

D C

\A C

C D oc s\

O M

\C I-A

(U S)

-6

_F O

G _T

\P ro je ct F ile s\

\2 0-

0\ N

-1

Pr e-se le ct io n.

dw g

Pl ot

T im e:

A ug

3, :2 7p m A

H as an

SHEET NO.

PAGE NO.

NORTHERN

TCWSP

AUGUST 2026

25-030

60759505

BIDDING, OR PERMIT PURPOSES

NOT INTENDED FOR CONSTRUCTION,

DOCUMENT IS FOR INTERIM REVIEW AND

, P.E.

TEXAS LICENSE NO.

DATE

128681

SURENDRA BAROT

AUGUST 14, 2026

Pre-selection PIDs

N00-101 - Pre-selection-LAYOUT

N10-101 - Pre-selection-LAYOUT

File details come from the government source that posted it. Updated Sep 3, 2026.