13-RFP 3837 Addendum 1.pdf

August 8, 2025

All Proposers on EMWD RFP 3837 (Standardization and Programming of Red Lion DA70A Remote Terminal Units)

SUBJECT: ADDENDUM 1

Eastern Municipal Water District is issuing a revision to RFP 3837 (Standardization and Programming of Red Lion DA70A Remote Terminal Units). The section has been updated to reflect the change:

1. Addendum 1: “Attachment D - Input/Output and Control Strategy”, incorporated herein, has been added to the RFP.

All other information remains the same.

Regards, Jose (Tony) Curiel Contracts Analyst I

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/

ATTACHMENT D

INPUT/OUTPUT AND CONTROL STRATEGY

INPUT/OUTPUT FOR CURRENT KINGFISHER TEMPLATE PROGRAMS

PS-10 CP-10 RM-1 DI-5 DI-5 DI-5 DI-5 DO-2 AI-10 AI-10 AO-2 AO-2

(LM-1)

(MC-10)

S S S S S S S S S S S S L L L L L L L L L L L L O O O O O O O O O O O O T T T T T T T T T T T T

1 2 3 4 5 6 7 8 9 10 11 12

POWER CPU COMM DIGITAL DIGITAL DIGITAL DIGITAL DIGITAL ANALOG ANALOG ANALOG ANALOG

SUPPLY MODULE MODULE INPUT INPUT INPUT INPUT OUTPUT INPUT INPUT OUTPUT OUTPUT

MODULE MODULE MODULE MODULE MODULE MODULE MODULE MODULE MODULE MODULE

RADIO

12 256K MODEM 16 16 16 16 16 8 4 4

VDC FLASH (or) CHANNEL CHANNEL CHANNEL CHANNEL CHANNEL CHANNEL CHANNEL CHANNEL CHANNEL

768K LINE DRY DRY DRY DRY RELAY 12 12

RAM MODEM CONTACT CONTACT CONTACT CONTACT BIT BIT

(or)

MULTI

COMM

PS-10 DI-5 AI-10 Spare

S S S S L L L L O O O O T T T T

13 14 15 16

POWER DIGITAL ANALOG SPARE

SUPPLY INPUT INPUT

MODULE MODULE MODULE MODULE

12 16 8

VDC CHANNEL CHANNEL

DRY

CONTACT

CONTROL STRATEGY

B4160 Quail Valley Booster Control Strategy

RTU 64 DA

Quail Valley Booster is a 3-pump Tank Level controlled Booster. Pumps 1 & 2 are 75 HP and can be controlled manually or by the IOC via pump rotation. Pump 3 is 40 HP pressure booster pump

Controls

By sending a 4-20 Ma signal from Quail Valley 2 Tank the plant can be set for two independent stages

a) Pump Staging Control, By accessing the OIT Log-In screen or contacting the IOC set points can be entered for each stage. These set points are the on and off level points of the Tank.

b) Pump Rotation, By accessing the OIT Log-In screen or contacting the IOC rotation of the pumps can be changed.

c) High Discharge, By accessing the OIT Log-In Screen or contacting the IOC a set point can be entered to shut off the pumps if the discharge pressure is too great.

d) Low Suction, By accessing the OIT Log-In Screen or contacting the IOC a set point can be entered to shut off the pumps if the suction pressure is to low.

Alarms

a) High Discharge Pressure

b) Low suction Pressure

c) Pump Fails

d) Flow Fails

e) Intrusion

f) AC power Fail

Radio Communications

Quail Valley Booster uses a TS4000 radio to communicate with the IOC. The signal is sent to the IOC. Direct path to FEP 4 DA. It also has link radio to S4160 Quail Valley 2 (Master) to communicate with via L3334 Newport West Lift (Ext)

L3351 Baxter Lift Control Strategy

RTU 181 CA

Baxter Lift is a two-pump analog controlled Lift Station. Pumps # 1 and #2 are Soft Starter controlled submersible pumps.

Controls

An Analog Control System That reads the wet well controls the plant.

e) Pump Staging Control, By entering on and off set points for stages 1and 2 and desired pump rotation at the OIT the RTU will call the pumps.

f) Hydro-Ranger Control, Using the ultrasonic signal a set point has been hard coded in the RTU show low level and/or high level to generate a system fail/alarm.

g) High Wet Well Control, A high wet well alarm is generated by the floats in the wet well. When the level in the wet well raises the float a Warwick relay is tripped. During this period a time-delay relay is energized turning both pumps on for a specified time period.

Alarms

g) High Wet Well

h) Bubbler Fail

i) Seal Fails Pumps All Pumps

j) AC power Fail

k) Generator Run

l) Generator Fail

m) Pump Fail Pumps All Pumps

Radio Communications

Baxter Lift uses a TS4000 radio to communicate with the IOC. The signal is sent via the TS4000 radio to E. Holland Repeater to the IOC.