6-RFP 3809 Addendum 2.pdf

July 31, 2025

All Proposers on EMWD RFP 3809 Variable Frequency Drive (VFD) over 100HP

SUBJECT: ADDENDUM #: 2

Eastern Municipal Water District is issuing to official address the questions that were posted to Bonfire during the question timeframe. This addendum will also clarify the wording in the scope of work for Project 1, add a section to terms and conditions, update Attachment A, update Attachment B and add Attachment C. The following sections, exhibits and attachments have been updated to reflect the change:

1. Questions and Answers posted on Bonfire July 31, 2025:

a. Question1 - Can you confirm that the (2) centrifuges both have a hydraulic scroll drive and require only (1) VFD that is regenerative style per centrifuge for the bowl drive?

Answer: Yes, both centrifuges have a hydraulic scroll drive and require only 1 VFD for the bowl drive.

b. Question 2 - Will EMWD be reviewing bids on a Project-by-Project basis or on a Line by Line (per drive) basis? What we mean is, will EMWD be awarding the job based on 2 projects or could EMWD base award on individual drives?

Answer: The evaluation team will review bids both as two separate projects and on a per-drive basis, in addition to evaluating the overall project as a whole. EMWD will determine the award structure based on what is in best interest of EMWD, which may include awarding by individual drives or by project.

c. Question 3 - Does EMWD require bidders to attend both job walks even if they are only bidding on one Drive Project? When attending could the bidder have signed up as the actual bidder one day and manufacturer the next or does the bidder's name need to appear on both sign-in sheets to be valid?

Answer: Both job walks were mandatory. To have your proposal considered, your company must have had a representative present at each job walk. The same individual is not required to attend both days; however, at least one representative from your company must be signed in for each day. For example, if Joe Smith attended and signed in on Day 1, and Wendy Miller attended and signed in on Day 2, your company would still be considered as having met the attendance requirement.

d. Question 4 - Will EMWD require each bidder to provide all drives listed per project (Project 1 -2 Drives, Project 2 – 6 Drives)?

Answer: No, EMWD does not require bidders to submit proposals for both projects or for all drives. Companies may choose to submit proposals for all drives, for a single project, or for individual drives as they prefer.

e. Question 5 - Can start-up services be grouped together into a single visit per project? Can field training be conducted during the same visit as start-up services? Please specifically detail how many individual/dedicated trips to EMWD facilities will be necessary for each project ?

Answer: Start-up services cannot be consolidated into a single visit per project. These services will most likely be required the day after installation—or at a later date—at each site and for each VFD installed. Field training can be conducted during the same visit as the start-up, assuming the start-up goes smoothly.

2. Request for Proposal Document:

a. Title Page to now read “ADDENDUM #2 REQUEST FOR PROPOSAL #3809”

b. Table of Contents page updated attachment – ADDENDUM #2 ATTACHMENT A – Project 1 –

New VFD with Regeneration – 2 Units

c. Table of Contents page updated attachment – ADDENDUM #2 ATTACHMENT B – Project 2 –

New VFD Retrofit – 6 Units

d. Section 2.1 Background revised to remove the wording with new cabinet assembly and replace with existing cabinet.

e. Section 2.3 Revised to reflect 2 units and title for Attachment to ADDENDUM #2 – Attachment A

f. Section 2.4 Revise the title for Attachment B to ADDENDUM #2 – Attachment B

g. Section 2.4.1 A revised to add the following wording for clarification: The VFD at Perris Valley

Regional Water Reclamation Facility (PVRWRF) IPS Pump w3 VFD will remain a 6-pulse unit with filtration.

3. 6. TERMS AND CONDTIONS add the following language:

a. 6.34 TARRIFFS In the event that tariffs, duties, or similar government-imposed charges are applied, increased, decreased, or repealed with respect to materials or products imported and used in the performance of this Contract, the Supplier shall provide written notification to EMWD within fifteen (15) business days of such change. This notification must include detailed documentation justifying the impact of the tariff change on the cost of materials, including but not limited to supplier invoices, government notices, and a breakdown of cost adjustments directly attributable to the tariff change.

No adjustment to the contract price will be considered without such documentation. EMWD reserves the right to audit and verify all cost claims associated with tariff adjustments.

In the event that tariffs are decreased or repealed, resulting in a reduction of material costs, the Supplier shall promptly notify EMWD in writing and adjust the contract price to reflect the corresponding cost reduction. Failure to notify EMWD of such reductions within fifteen (15) business days may result in the withholding of payments or other remedies as determined appropriate by EMWD.

All tariff-related adjustments shall be subject to EMWD written approval and shall not be deemed effective unless and until such approval is granted.

4. Attachment A

a. Title updated to read “ADDENDUM #2 – Attachment A

b. Revised equipment for unit 3 from T3100 to T3400

5. Attachment B

a. Title updated to read “ADDENDUM #2 – Attachment B

b. Revised equipment for unit 1 from T3100 TEPS PERRIS VALLEY EFFLUENT PUMP 3 VFD to T3100

UTILITY WATER PUMP 3 VFD

6. Attachment C

a. Add attachment C to show pictures of motor plates.

• New language is indicated in red, bold and underlined font.

All other information remains the same.

Regards, Wendy Miller Buyer

My signature below acknowledges receipt and confirmation of this Addendum #1. I understand that this notice must be acknowledged in my proposal on the EMWD e-Procurement website in order to be considered responsive.

Name Date

Title Company https://emwd.bonfirehub.com/

ADDENDUM #2 REQUEST FOR PROPOSAL #3809

VARIABLE FREQUENCY DRIVES (VFD) - OVER 100HP

REQUEST FOR PROPOSAL (RFP) ISSUED: 7/7/2025

MANDATORY JOB WALK DAY 1: 8:00 AM, 7/22/2025

MANDATORY JOB WALK DAY 2: 8:00 AM, 7/23/2025

DEADLINE FOR SUBMITTAL OF QUESTIONS: 4:00 PM, 7/30/2025

ELECTRONIC PROPOSAL DUE BY: 4:00 PM, 8/13/2025

ATTENTION ALL PROPOSERS

To ensure receipt of the latest information and updates regarding this solicitation and to submit a proposal, interested parties must register online at EMWD e-Procurement.

Buyer: Wendy Miller, Buyer Phone: (951) 928-3777, ext. 4613 Email: millerw@emwd.org

KEY DATES

https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Femwd.bonfirehub.com%2Fportal%2F%3Ftab%3Dlogin&data=02%7C01%7Cvazquezm%40emwd.org%7Cbf58b4f644b647bfb82608d84a0ca908%7Cf7112bcf929c48f7bf407231589cba03%7C0%7C0%7C637340765516003000&sdata=jRp3WZRFk47LBJk7YIvUBCTVhwZp1xTT%2BNsO8slncms%3D&reserved=0

RFP #3809 2

Table of Contents

1. PROJECT INTRODUCTION AND OVERVIEW

2. SCOPE OF WORK

3. KEY DATES, SUBMITTAL INFORMATION AND INSTRUCTIONS

4. EVALUATION OF PROPOSALS

5. AWARD PROCESS

6. TERMS AND CONDITIONS

7. GENERAL SAFETY REQUIREMENTS – (REV. 12/08)

8. INJURY & ILLNESS PREVENTION PROGRAM (IIPP)

9. INSURANCE REQUIREMENTS – (REV. 03/2022)

REQUIRED SUBMITTALS

EXHIBIT A - RFP Price Form

EXHIBIT B - Proposer’s Business Information

EXHIBIT C -Business References

EXHIBIT D - List of Subcontractors

EXHIBIT E - Additions, Deletions and/or Exceptions

EXHIBIT F – Product Specifications

EXHIBIT G – Insurance Affidavit

EXHIBIT H - Contractor’s CAL/OSHA Compliance History

EXHIBIT I - Proof of Authorized Partnership

EXHIBIT J - Submittal Check-off List

ATTACHMENTS

ADDENDUM #2 ATTACHMENT A – Project 1 – New Replacement VFD with Regeneration – 2

Units

ADDENDUM #2 ATTACHMENT B – Project 2 - VFD Retrofit – 6 Units

ADDENDUM #2 ATTACHEMENT C – Motor plate pictures

RFP #3809 6

technical descriptions for each unit are listed in ADDENDUM # 2 - Attachment A.

VFD’s for Project will be evaluated separately and may be awarded to multiple vendors at EMWD’s sole discretion.

Technical Requirements for New Units The Supplier shall provide the following for each VFD as part of the replacement scope:

A. Ultra Low Harmonic (ULH) Technology: All VFD replacements rated greater than or equal to 100 horsepower (hp) shall utilize Ultra Low Harmonic (ULH) technology. For the purpose of this scope, the RWRF Electrical Department defines ULH as technologies including Active Front End or Matrix Drives

B. Regenerative Capabilities: The system shall possess regenerative capabilities to decelerate the centrifuge bowl to a complete stop while capturing the energy generated during the braking process.

C. Wiring Configuration Compatibility: VFD terminals shall match the existing wiring configuration to ensure seamless integration with current infrastructure, D. Input/Output (I/O) Capabilities: VFD shall provide, at a minimum, all I/O capabilities of the existing VFD.

E. Supervisory Control and Data Acquisition (SCADA) System Integration: VFD shall be capable of integrating with the RWRF SCADA system via Ethernet/IP communication protocols.

F. Door-Mounted Hardware: VFD shall support existing door-mounted hardware, including a new local Human-Machine Interface (HMI).

G. Footprint Compliance: New VFD shall fit within the existing footprint, if there is a deviation, Supplier shall describe in detail under Additions, Deletions, and/or Exceptions Form. (Exhibit E.1)

H. Operations and Maintenance Manual: VFD shall include one operations and maintenance manual that describes how to maintain the equipment over its useful life for each VFD installed.

I. Short Circuit Rating: All new equipment shall have a minimum short circuit current rating (AIC) of 65kA.

J. Standards Compliance: All new equipment shall comply with Institute of Electrical and Electronics Engineers (IEEE) IEEE-519 standards for harmonic distortion.

K. Equipment Age: All equipment shall be new, unused, and sealed by the manufacturer, free from defects, and shall not have been previously installed or operated at any another location.

RFP #3809 7

2.4 PROJECT 2 –VFD RETROFIT - 6 UNITS

A total of six (6) units are included In Project 6 of this solicitation for Retrofit. Existing technical descriptions for each unit are listed in ADDENDUM #2 Attachment B.

VFD’s for Project 2 will be evaluated separately and may be awarded to multiple vendors at EMWD’s sole discretion.

2.4.1 Technical Requirements for New Units:

The Supplier shall provide the following for each VFD as part of the replacement scope:

A. Ultra Low Harmonic (ULH) Technology: All VFD replacements rated greater than or equal to 100 horsepower (hp) shall utilize Ultra Low Harmonic (ULH) technology. For the purpose of this scope, the RWRF Electrical Department defines ULH as technologies including Active Front End or Matrix Drives. The Perris Valley Regional Water Reclamation Facility (PVRWRF) IPS Pump 3 VFD will remain a 6-pulse with filtration.

B. Wiring Configuration Compatibility: VFD terminals shall match the existing wiring configuration to ensure seamless integration with current infrastructure, C. Input/Output (I/O) Capabilities: VFD shall provide, at a minimum, all I/O capabilities of the existing VFD.

D. Supervisory Control and Data Acquisition (SCADA) System Integration: VFD shall be capable of integrating with the RWRF SCADA system via Ethernet/IP communication protocols.

E. Door-Mounted Hardware: VFD shall support existing door-mounted hardware, including a new local Human-Machine Interface (HMI).

F. Footprint Compliance: New VFD shall fit within the existing footprint, if there is a deviation, Supplier shall describe in detail under Additions, Deletions, and/or Exceptions Form. (Exhibit E.2)

G. Operations and Maintenance Manual: VFD shall include one operations and maintenance manual that describes how to maintain the equipment over its useful life for each VFD installed.

H. Short Circuit Rating: All new equipment shall have a minimum short circuit current rating (AIC) of 65kA.

I. Standards Compliance: All new equipment shall comply with Institute of Electrical and Electronics Engineers (IEEE) IEEE-519 standards for harmonic distortion.

RFP #3809 29

6.33 ENVIRONMENTAL COMPLIANCE

The Contractor shall comply with all requirements of applicable Federal, State and local environmental rules and regulations. Any infractions of said rules and regulations by the Contractor during the term of the contract, which result in penalties, will be the responsibility of the Contractor.

6.34 TARRIFFS

In the event that tariffs, duties, or similar government-imposed charges are applied, increased, decreased, or repealed with respect to materials or products imported and used in the performance of this Contract, the Supplier shall provide written notification to EMWD within fifteen (15) business days of such change. This notification must include detailed documentation justifying the impact of the tariff change on the cost of materials, including but not limited to supplier invoices, government notices, and a breakdown of cost adjustments directly attributable to the tariff change.

No adjustment to the contract price will be considered without such documentation.

EMWD reserves the right to audit and verify all cost claims associated with tariff adjustments.

In the event that tariffs are decreased or repealed, resulting in a reduction of material costs, the Supplier shall promptly notify EMWD in writing and adjust the contract price to reflect the corresponding cost reduction. Failure to notify EMWD of such reductions within fifteen (15) business days may result in the withholding of payments or other remedies as determined appropriate by EMWD.

All tariff-related adjustments shall be subject to EMWD written approval and shall not be deemed effective unless anduntil such approval is granted.

RFP 3809 Variable Frequency Drives (VFD) – Over 100HP Project 1

ADDENDUM #2 - Attachment A

RFP 3809 Page 1 of 2

1. San Jacinto Regional Water Reclamation Facility (SJRWRF)

Equipment Name T3100 CENTRIFUGE VFD

Manufacturer Date 2011 Horsepower 150 Volts 480 Phase 3 Current Brand Toshiba Part Number VFAS-1-4110KCP-HN Serial Number Unknown Motor Usage Driving Centrifuge Bowl Motor Nameplate HP 125 Motor Nameplate AMPs 142 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

163.3

ULH or Non-ULH ULH

2. Moreno Valley Regional Water Reclamation Facility (MVRWRF)

Equipment Name T3200 CENTRIFUGE VFD

Manufacturer Date 2011 Horsepower 150 Volts 480 Phase 3 Current Brand Toshiba Part Number VFAS-1-4110KCP-HN Serial Number Unknown Motor Usage Driving Centrifuge Bowl Motor Nameplate HP 125 Motor Nameplate AMPs 142 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

RFP 3809 Variable Frequency Drives (VFD) – Over 100HP Project 1

ADDENDUM #2 - Attachment A

RFP 3809 Page 2 of 2

3. Temecula Valley Regional Water Reclamation Facility (TVRWRF)

Equipment Name T3100 T3400 CENTRIFUGE VFD

Manufacturer Date 2005 Horsepower 150 Volts 480 Phase 3 Current Brand Toshiba Part Number VF AS 1 Serial Number 195205131423000-4 Motor Usage Connected Directly to Centrifuge

Bowl Motor Nameplate HP 125 Motor Nameplate AMPs 142 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

RFP 3809 Variable Frequency Drive (VFD) - Over 100 HP Project 2

ADDENDUM #2 - Attachment B

RFP 3809 Page 1 of 3

1. San Jacinto Regional Water Reclamation Facility (SJRWRF)

Equipment Name T3100 TEPS UTILITY WATER

PERRIS VALLEY EFFLUENT

PUMP 3 VFD

Manufacturer Date 2012 Horsepower 100 Volts 480 Phase 3 Current Brand ABB Part Number ACS800-U4-550-5+E210+P901 Serial Number Unknown Motor Usage Vertical Turbine Motor Nameplate HP 100 Motor Nameplate AMPs 111 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

127.65

2. Moreno Valley Regional Water Reclamation Facility (MVRWRF)

Equipment Name T3200 IPS PUMP 1 VFD

Manufacturer Date 2006 Horsepower 100 Volts 480 Phase 3 Current Brand Toshiba Part Number VF-AS1-4750PL-HN Serial Number 9227 05131421 0043 Motor Usage Centrifugal Pump Motor Nameplate HP 100 Motor Nameplate AMPs 122 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

140.3

RFP 3809 Page 2 of 3

3. Moreno Valley Regional Water Reclamation Facility (MVRWRF)

Equipment Name T3200 TEPS PUMP 4 VFD Manufacturer Date 2009 Horsepower 150 Volts 480 Phase 3 Current Brand ABB Part Number ACS800 Serial Number 2102000957 Motor Usage Vertical Turbine – 4 Stage Motor Nameplate HP 250 Motor Nameplate AMPs 273 Motor Nameplate SF 1 Minimum VFD Current Output Required

4. Perris Valley Regional Water Reclamation Facility (PVRWRF)

Equipment Name T3500 TEPS U/W PUMP 4 VFD

Manufacturer Date 2005 Horsepower 150 Volts 480 Phase 3 Current Brand Toshiba Part Number W7 Serial Number 060805743 Motor Usage Unknown Motor Nameplate HP 150 Motor Nameplate AMPs 168 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

193.2

RFP 3809 Page 3 of 3

5. Moreno Valley Regional Water Reclamation Facility (MVRWRF)

Equipment Name T3200 IPS PUMP 3 VFD

Manufacturer Date 2010 Horsepower 200 Volts 480 Phase 3 Current Brand ABB Part Number ACS800 Serial Number 2102001084 Motor Usage Centrifugal Pump Motor Nameplate HP 218 Motor Nameplate AMPs 264 Motor Nameplate SF 1.25 Minimum VFD Current Output Required

6. Perris Valley Regional Water Reclamation Facility (PVRWRF)

Equipment Name T3500 IPS PUMP 3 VFD

Manufacturer Date 1994 Horsepower 300 Volts 480 Phase 3 Current Brand Toshiba Part Number H7 Serial Number A060304717 Motor Usage Submersible Centrifugal Chopper

Pump Motor Nameplate HP 250 Motor Nameplate AMPs 296 Motor Nameplate SF 1.15 Minimum VFD Current Output Required

340.4

ULH or Non-ULH 6 Pulse

ADDENDUM #2 - Attachment C

RFP 3809 Page 1 of 4

1. Moreno Valley Regional Water Reclamation Facility (MVRWRF) Motor plates for TEPS 4, IPS 1 and IPS 3

RFP 3809 Page 2 of 4

RFP 3809 Page 3 of 4

2. Perris Valley Regional Water Reclamation Facility (PVRWRF) Motor plates for Utility Water Pump 4 and IPS Pump

RFP 3809 Page 4 of 4