CITY OF LAREDO SOMBRERETILLO WASTEWATER TREATMENT PLANT Addendum No. 7 September 19, 2014 REVISIONS TO CONTRACT DOCUMENTS AND TECHNICAL SPECIFICATIONS Questions and Clarifications: Questions received by e-mail: Question- No. 1- Question- What are the intentions of the architecture for the color and finish of the masonry? Response: We are requesting a sealed split face block, color will be selected by the Architect during the submittal phase. Question No. 2 Question- It looks like the fence gets painted per the notes. Is it labeled as CMU so we are assuming it is plain face gray block, painted. We are assuming it only gets painted on the outside. Is all this correct? Response: Block wall to be painted on both sides. Question No. 3- Question- The electrical buildings and chlorine building say CMU so we are assuming those are plain face block. The specs. appear to have the plain face CMU with color so we are assuming those buildings are plain face CMU with integral color. Is that correct? Response: Split face block, color to be selected during the submittal phase. 09-19-2014 Addendum 7 Page 1 of 44
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CITY OF LAREDO
SOMBRERETILLO WASTEWATER TREATMENT PLANT
Addendum No. 7
September 19, 2014
REVISIONS TO CONTRACT DOCUMENTS AND TECHNICAL SPECIFICATIONS
Questions and Clarifications:
Questions received by e-mail:
Question- No. 1-
Question-
What are the intentions of the architecture for the color and finish of the masonry?
Response:
We are requesting a sealed split face block, color will be selected by the Architect during the submittal phase.
Question No. 2
Question-
It looks like the fence gets painted per the notes. Is it labeled as CMU so we are assuming it is plain face gray
block, painted. We are assuming it only gets painted on the outside. Is all this correct?
Response:
Block wall to be painted on both sides.
Question No. 3-
Question-
The electrical buildings and chlorine building say CMU so we are assuming those are plain face block. The specs.
appear to have the plain face CMU with color so we are assuming those buildings are plain face CMU with integral
color. Is that correct?
Response:
Split face block, color to be selected during the submittal phase.
09-19-2014 Addendum 7 Page 1 of 44
Question No. 4-
Question-
At the operations building, it looks like the interior & exterior CMU are plain face. The interior gets painted and
the exterior gets damproofing. It looks like the 4” CMU veneer is split face. It does not appear to be painted so it
looks like the operations building has a 4” split face veneer with integral color. Is that correct?
Response:
Exterior to be damproofed and sealed, split face, color to be selected during submittal phase.
Question No. 5-
Question-
Request to add in Section 11373 – AERATION EQUIPMENT: POSITIVE DISPLACEMENT BLOWERS
(CHLORINE CONTACT BASIN) – Equipment manufactured by United Blowers Inc. (UBI)
Response:
The City is not approving additional manufacturer during the bidding phase
All bidders may propose to use an alternative supplier for Major Equipment noted in the Schedule of Major
Equipment Suppliers Table (Section A-5). Include appropriate deductive price offered for any alternative supplier
proposed deemed equal in quality to those listed as Base Bid Suppliers in table. However, a Base Bid supplier must
be selected. Failure to indicate a Base Bid supplier shall render the Bidder nonresponsive. If the alternate supplier
is determined by the Engineer to not be equivalent, the Bidder shall revert back to the supplier selected in the base
bid.
Question No. 6-
Question-
Is there going to be a set of P&ID drawings released for this project?
Response:
No.
Question No. 7-
Question-
Spec Section 13446 Section is for Pressure Transmitters, 2.02B states Calibrated Range; 0 to 120 psi for booster
pumps, 0 to 40 psi for ground storage tanks. What are the equipment tag numbers for these units?
Response:
Equipment tags were provided for major equipment and valves only. These units were not assigned equipment tags
numbers.
09-19-2014 Addendum 7 Page 2 of 44
Question No. 8-
Question-
Addendum 4 Dwg 0700-E-02 identifies equipment Tag numbers FIT-1 through 4, What type of technology is this?
Response:
Magnetic flow meters
Question No. 9-
Question-
Addendum 4 Dwg 1100-E-03 identifies equipment Tag numbers PS-1101A & 1102A. Need a specification
Response:
Pressure switches are specified in the amended version of Section 13446.
Question No. 10-
Question-
Spec Section 11380 section 1.2 C-F Equipment Tags
C. FM-0701 - Flow Meter (RAS/WAS Station)
D. FM-0702- Flow Meter (RAS/WAS Station)
E. FM-0703- Flow Meter (RAS/WAS Station)
F. FM-0704- Flow Meter (RAS/WAS Station)
What type of device is this and what section do we use?
Response:
These are magnetic flow meter. Refer to Section 11380, paragraph 2.3 and Sheet 0700-M-01and 0700-E-01.
Question No. 11-
Question-
Specification 11380 Section 2.2 is for Chlorine Gas Detector, Please identify equipment tag numbers and dwgs?
Response:
Chlorine Leak Detectors # 1 to 4 are shown on Sheet 0900-M-01 and Sheet 0900-E-01. Specification Section No.
11380 was revised to show equipment tag numbers.
09-19-2014 Addendum 7 Page 3 of 44
Question No. 12-
Question-
Specification 11380 Section 2.3 is for Magnetic Flow Meters ¬ What are the equipment tag numbers and what size
are they?
Response:
Refer to response to Question 10. Flow meter shall match pipe size on drawing.
Question No. 13-
Question-
Addendum 4 Specification 13446 Section 2.02 for Pressure Transmitters, what are the equipment tag numbers and
the dwg number?
Response:
Equipment tags were provided for major equipment and valves only. These units were not assigned equipment tags
numbers
Question No. 14-
Question-
Addendum 4 Specification 13446 Section 2.03 for Pressure Gauges, what are the equipment tag numbers and the
dwg number?
Response:
Equipment tags were provided for major equipment and valves only. These units were not assigned equipment tags
numbers.
A number of pressure gauges are required and shown throughout the mechanical plans. For example, the pressure
gauges at the RAS/WAS Pump Station are shown on Sheet 0700-M-02
Question No. 15-
Question-
Addendum 4 Specification 13446 Section 2.04 for Diaphragm Seals, what are the equipment tag numbers and the
dwg number?
Response:
Equipment tags were provided for major equipment and valves only. These units were not assigned equipment tags
numbers.
Diaphragm seals are required on all pressure sensors protecting the various progressive cavity pumps. The
pressure sensor locations are shown, for example, on sheet 1100-M-04 and 1100-E-03.
Tag number for the pressure switches are noted on Sheet 1100-E-03.
09-19-2014 Addendum 7 Page 4 of 44
Question No. 16-
Question-
Addendum 4 Specification 13446 Section 2.05 for Level Switches ¬ Float Type, what are the equipment tag numbers
and the dwg number?
Response:
Equipment tags were provided for major equipment and valves only. These units were not assigned equipment tags
numbers.
The level switches/float type are required at the influent lift station (refer to Electrical Sheets 0200-E-01 and 0200-
E-02).
Question No. 17-
Question-
Dwg 1100-M-03 & 04 identify annular seals, pressure switches and gauges with no tag numbers, are there
equipment tag numbers for these units and is the SI to supply them?
Response:
Equipment tags were provided for major equipment and valves only. These units were not assigned equipment tags
numbers.
This shall be provided by the Contractor.
Question No. 18-
Question-
The controls for the project are difficult to follow. We are only providing the panel in the Influent Pump Station and
then the rest of the plant is supposed to communicate it’s controls to the Influent Pump Station. Basically, what
needs to be on the SCADA/HMI in the Influent Pump Panel?
Response:
A copy of the required input/output point listing is provided as an attachment.
Modify: Specification Section 11380 PROCESS INSTRUMENTS.
Delete: In its entirety Section (Pages 1 to 10)
Replace with:
New Section – Attached hereto (Pages 1 to 10)
Modify: Specification Section 11446 PRIMARY SENSORS/TRANSDUCERS AND FIELD EQUIPMENT.
Delete: In its entirety Section (Pages 1 to 10)
Replace with:
New Section – Attached hereto (Pages 1 to 10)
CONSTRUCTION PLANS:
Delete: 0100-C-60 Sheet 80 of 391 in its entirety and
Replace with: 0100-C-60 Sheet 80 of 391 dated, September 12, 2014
Delete: 0100-C-62 Sheet 82 of 391 in its entirety and
Replace with: 0100-C-62 Sheet 82 of 391 dated, September 12, 2014
Delete: 0900-M-01 Sheet 260 of 391 in its entirety and
Replace with: 0900-M-01 Sheet 260 of 391 dated, September 12, 2014
09-19-2014 Addendum 7 Page 6 of 44
Each Bidder is requested to acknowledge receipt of this addendum by his/her signature affixed hereto and to file same with and attached to his/her bid.
Recommended By:
_____________________________________JoEmma P. Sherfey, P.E.Sherfey Engineering Company, LLCFirm No. F-3132
Date:_________________________________
All contractors, holders of plans and specifications and all interested parties to the referenced project are hereby notified of the following revisions to the plans and/or specifications of the above referenced project.
The undersigned acknowledges receipt of this addendum and the bid submitted herewith is in accordance with the information and stipulations set forth.
Signature of Bidder________________________________________
ac/5 amps dc, cushioned and mounted along main axis at about 65
degree inclination.
3. Weight: Weight to cause sensor to hang straight down from cable
when not immersed and only allow float to pivot when immersed
in liquid.
09-19-2014 Addendum 7 Page 32 of 44
FJD 8138 City of Laredo September 2014
Sombreretillo WWTP – Addendum No 7
PRIMARY SENSORS/TRANSDUCERS AND FIELD EQUIPMENT 13446 - 7
4. Electrical Cable:
a. Heavy duty, three conductor, flexible and submersible
cable, sheathed in PVC and connected to float and switch
with watertight seal.
b. Length furnished to be sufficient to extend to control
junction box provided for the sump pumps.
C. Point Of Use
1. Provide float switches in each of the secondary containment tanks
associated with the Chemical Building, and for the Pump Building
sump pump controls
D. Manufacturer and Model Number:
1. Flygt, Model ENH-1O.
2. Or approved equal.
2.06 EFFLUENT FLOW TRANSMITTER
A. Furnish and install the following level transmitters:
1. Install a Siemens HydroRanger 200 ultrasonic transmitter or
Engineer approved equal by Endress & Hauser. The unit shall be
equipped with a XPS-15 transducer. Provide a sufficient amount
of cable to extend to the indicated location of the level transmitter
with now less than a ten (10) foot excess. The transducer shall be
equipped with a 6” mounting flange and a submergence shield.
Mounting brackets shall be fabricated 316 stainless steel.
2.07 LIFT STATION LEVEL TRANSMITTERS
A. Manufacturer:
Endress and Hauser: Model FMK165-AKA 10C .
Blue Ribbon: Model Birdcage GP: 50 (15, 30 psi)
AMETEK: Model 575P
B. Description: Solid-state two-wire submersible electronic differential
pressure transmitter with 4-20 mA output proportional to input pressure.
C. Range: 0-30 feet range, or as required by wet well depth, with +/- 0.3 %
accuracy and 0.5% max temperature across calibrated span.
09-19-2014 Addendum 7 Page 33 of 44
FJD 8138 City of Laredo September 2014
Sombreretillo WWTP – Addendum No 7
PRIMARY SENSORS/TRANSDUCERS AND FIELD EQUIPMENT 13446 - 8
D. Power: Loop-powered, 24 VDC
E. Spare Unit: Provide a spare unit in addition to the unit installed.
F. Transmitters to be calibrated to match the chart recorder range.
G. Warranty: 18 months minimum from the time acceptance by City.
2.08 PRESSURE SWITCHES
A. NEMA 4X enclosed pressure switch with dual, adjustable deadband set
points and automatic reset functionality.
B. Switch contacts shall be hermetically sealed and rated as general purpose.
C. The actuator seal shall be Buna-N.
D. Pressure switch shall be an Ashcroft L-Series or approved equal.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install each item in accordance with manufacturer’s recommendations and in
accordance with the Contract Documents. Transmitters and instruments require
access for periodic calibration or maintenance shall be mounted so they are
accessible while standing on the floor.
B. All items shall be mounted and anchored using hot dip galvanized after
fabrication structural steel channel with stainless steel hardware throughout unless
otherwise noted.
C. Conform to all applicable provisions of NEMA standards and NEC when
installing the equipment and interconnecting wiring.
3.02 START-UP, CALIBRATION, AND TESTING AND TRAINING
A. Comply with the requirements of Sections 13440, and 13446 as well as the
requirements of this section.
B. Loop sheets (ISA S5.4 minimum) shall be prepared by the General Contractor and
supplied to the Owner in an AutoCAD Version 2012 on a DVD/CD ROM for use
on a Windows compatible computer.
09-19-2014 Addendum 7 Page 34 of 44
FJD 8138 City of Laredo September 2014
Sombreretillo WWTP – Addendum No 7
PRIMARY SENSORS/TRANSDUCERS AND FIELD EQUIPMENT 13446 - 9
C. All instruments shall be checked out and fully calibrated prior to start-up of the
system as well as during the term of the project until substantial acceptance as
required.
D. All wiring shall be rung-out prior to initiating operation to assure proper
interconnection. All power wiring shall be meggered and formal testing forms
shall record this information. The Owner shall be notified as to when any such
testing is to be conducted so that an Owner's representative can be present to
witness the testing. All such testing result information shall be formally
submitted to the Owner in typewritten form.
E. The Contractor shall plan, schedule and conduct a field test for the overall control
and monitoring system. This field test shall include the testing of all instruments,
all I/O points, all alarms, and all monitoring and control loops. This field test
shall be witnessed by the Engineer and the Owners representative.
END OF SECTION
09-19-2014 Addendum 7 Page 35 of 44
FJD 8138 City of Laredo September 2014
Sombreretillo WWTP – Addendum No 7
PRIMARY SENSORS/TRANSDUCERS AND FIELD EQUIPMENT 13446 - 10
THIS PAGE INTENTIONALLY LEFT BLANK
09-19-2014 Addendum 7 Page 36 of 44
DD
B B
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2
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8
0
Z
1
P
T
PLAN
SIDE VIEW
SECTION A-A
TOP SLAB
WALL
SECTION B-B
TYPICAL STORM MANHOLE COVER
V
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1
4
2
0
/
1
4
8
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COVER SECTION
FRAME SECTION
PICKHOLE DETAIL
104 Del Court - Suite 400Laredo, Texas 78041 - (956) 791-3511
T.B.P.E. FIRM REGISTRATION No. F-3132
San Antonio, Texas 782168400 Blanco Road, Ste. 201
T.B.P.E. FIRM REGISTRATION No. F-8038
SANITARY AND STORM SEWER DETAILS
0100-C-60
MANHOLE CONCRETE COLLAR DETAIL
1
SANITARY SEWER MANHOLE VENT FOR SEALED MANHOLE
2
SAFETY END TREATMENT TYPE "P"
3
2-WAY DROP INLET
4
09-19-2014 Addendum 7 Page 37 of 44
CONCRETE SIDE DRAIN DETAIL
SECTION A-A
DETAIL 1
EDGE
1
REDUCED PRESSURE PRINCIPLE ASSEMBLY
BACK FLOW PEVENTER INSTALLATION DETAIL
3
DOUBLE CHECK DETECTOR ASSEMBLY
BACKFLOW PREVENTOR DETAIL
(ABOVE GROUND)
PLAN
ELEVATION
2
TYPICAL 3/4" AND 1"
TYPICAL WATER SERVICE INSTALLATION
4
GRAVEL RIP-RAP DETAIL @
SAFETY END TREATMENTS
5
PLAN
SECTION A-A
104 Del Court - Suite 400Laredo, Texas 78041 - (956) 791-3511
T.B.P.E. FIRM REGISTRATION No. F-3132
San Antonio, Texas 782168400 Blanco Road, Ste. 201
T.B.P.E. FIRM REGISTRATION No. F-8038
MISCELLANEOUS CIVIL DETAILS
0100-C-62
09-19-2014 Addendum 7 Page 38 of 44
CHLORINATOR
ROOM
CHLORINE
STORAGE ROOM
EMERGENCY
CHLORINE DRY
SCRUBBER AREA
PLAN
D
260 262
C
260 262
A
260 261
B
260 262
6
385
HOSE
RACK
385
NON-FREEZE
HOSE BIBB
1
ELECTRICAL
BUILDING
385
4
385
EMERGENCY SHOWER
AND EYEWASH STATION
4
263
PURGE
CONNECTION
1
263
PURGE
CONNECTION
1
386
CLEAN OUT AT
GRADE DETAIL
4
104 Del Court - Suite 400Laredo, Texas 78041 - (956) 791-3511
T.B.P.E. FIRM REGISTRATION No. F-3132
San Antonio, Texas 782168400 Blanco Road, Ste. 201
T.B.P.E. FIRM REGISTRATION No. F-8038
CHLORINE BUILDING - MECHANICAL PLAN
0900-M-01
09-19-2014 Addendum 7 Page 39 of 44
Process Equipment Location Present(P)/ Future(F) Equipment Description I/O Point Description Signal Signal Source
Electrical Building No. 2 P Control Panel No.2 Surge Suppressor Control Power Surge DI Control Panel Electrical Building No. 2 P Control Panel No.2 Incoming 120V Power Power Failure Alarm and Pump Shutdown DI Control Panel Electrical Building No. 2 P Control Panel No.2 UPS Power UPS Trouble Alarm DI Control Panel
Influent Lift Station P West Primary Transducer/Transmitter West Well Level AI Lift Sta. West RackInfluent Lift Station P West Secondary Transducer/Transmitter West Well Level AI Lift Sta. West RackInfluent Lift Station P West Well Level Recorder West Well Level AO Control Panel PLCInfluent Lift Station P West Well Level Transducers West Well High Level Alarm DO Control Panel PLCInfluent Lift Station F West Well Pump No. 1 West Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station F West Well Pump No. 2 West Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station P West Well Pump No. 3 West Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station P West Well Pump No. 4 West Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station P West Well Float Switches West Well Low Low Level Shutdown DI FIELDInfluent Lift Station P West Well Float Switches High High Level Float Transfer From Transducer To Floats DI FIELDInfluent Lift Station P Sluice Gate No. 3 In East/ West E\Well Wall Gate Full Open DI FIELDInfluent Lift Station P Sluice Gate No. 3 In East/ West E\Well Wall Gate Full Closed DI FIELDInfluent Lift Station F West Well Pump No. 1 Call To Run DI Control Panel RelaysInfluent Lift Station F West Well Pump No. 1 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station F West Well Pump No. 1 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station F West Well Pump No. 1 VFD "On" DI VFDInfluent Lift Station F West Well Pump No. 1 Common Shutdown Alarm DI VFDInfluent Lift Station F West Well Pump No. 1 VFD Speed Command AO VFDInfluent Lift Station F West Well Pump No. 1 VFD Running Speed AI VFDInfluent Lift Station F West Well Pump No. 2 Call To Run DI Control Panel RelaysInfluent Lift Station F West Well Pump No. 2 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station F West Well Pump No. 2 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station F West Well Pump No. 2 VFD "On" DI VFDInfluent Lift Station F West Well Pump No. 2 Common Shutdown Alarm DI VFDInfluent Lift Station F West Well Pump No. 2 VFD Speed Command AO VFDInfluent Lift Station F West Well Pump No. 2 VFD Running Speed AI VFDInfluent Lift Station P West Well Pump No. 3 Call To Run DI Control Panel RelaysInfluent Lift Station P West Well Pump No. 3 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station P West Well Pump No. 3 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station P West Well Pump No. 3 VFD "On" DI VFDInfluent Lift Station P West Well Pump No. 3 Common Shutdown Alarm DI VFDInfluent Lift Station P West Well Pump No. 3 VFD Speed Command AO VFDInfluent Lift Station P West Well Pump No. 3 VFD Running Speed AI VFDInfluent Lift Station P West Well Pump No. 4 Call To Run DI Control Panel RelaysInfluent Lift Station P West Well Pump No. 4 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station P West Well Pump No. 4 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station P West Well Pump No. 4 VFD "On" DI VFDInfluent Lift Station P West Well Pump No. 4 Common Shutdown Alarm DI VFD
CITY OF LAREDO SOMBRERETILLOWASTEWATER TREATMENT PLANT I/O LISTING
ELECTRICAL BUILDING No. 2 - CONTROL PANEL No. 2
09-19-2014 Addendum 7 Page 40 of 44
Process Equipment Location Present(P)/ Future(F) Equipment Description I/O Point Description Signal Signal Source
CITY OF LAREDO SOMBRERETILLOWASTEWATER TREATMENT PLANT I/O LISTING
ELECTRICAL BUILDING No. 2 - CONTROL PANEL No. 2
Influent Lift Station P West Well Pump No. 4 VFD Speed Command AO VFDInfluent Lift Station P West Well Pump No. 4 VFD Running Speed AI VFD
Influent Lift Station P East Primary Transducer/Transmitter East Well Level AI Lift Sta. East RackInfluent Lift Station P East Secondary Transducer/Transmitter East Well Level AI Lift Sta. East RackInfluent Lift Station P East Well Level Recorder East Well Level AO Control Panel PLCInfluent Lift Station P East Well Level Transducers East Well High Level Alarm DO Control Panel PLCInfluent Lift Station P East Well Pump No. 5 East Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station P East Well Pump No. 6 East Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station F East Well Pump No. 7 East Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station F East Well Pump No. 8 East Well Transducers Call To Run DO Control Panel PLCInfluent Lift Station P East Well Float Switches East Well Low Low Level Shutdown DI FIELDInfluent Lift Station P East Well Float Switches High High Level Float Transfer From Transducer To Floats DI FIELDInfluent Lift Station P East Well Pump No. 5 Call To Run DI Control Panel RelaysInfluent Lift Station P East Well Pump No. 5 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station P East Well Pump No. 5 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station P East Well Pump No. 5 VFD "On" DI VFDInfluent Lift Station P East Well Pump No. 5 Common Shutdown Alarm DI VFDInfluent Lift Station P East Well Pump No. 5 VFD Speed Command AO VFDInfluent Lift Station P East Well Pump No. 5 VFD Running Speed AI VFDInfluent Lift Station P East Well Pump No. 6 Call To Run DI Control Panel RelaysInfluent Lift Station P East Well Pump No. 6 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station P East Well Pump No. 6 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station P East Well Pump No. 6 VFD "On" DI VFDInfluent Lift Station P East Well Pump No. 6 Common Shutdown Alarm DI VFDInfluent Lift Station P East Well Pump No. 6 VFD Speed Command AO VFDInfluent Lift Station P East Well Pump No. 6 VFD Running Speed AI VFDInfluent Lift Station F East Well Pump No. 7 Call To Run DI Control Panel RelaysInfluent Lift Station F East Well Pump No. 7 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station F East Well Pump No. 7 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station F East Well Pump No. 7 VFD "On" DI VFDInfluent Lift Station F East Well Pump No. 7 Common Shutdown Alarm DI VFDInfluent Lift Station F East Well Pump No. 7 VFD Speed Command AO VFDInfluent Lift Station F East Well Pump No. 7 VFD Running Speed AI VFDInfluent Lift Station F East Well Pump No. 8 Call To Run DI Control Panel RelaysInfluent Lift Station F East Well Pump No. 8 Auto/Manual Switch in Auto DI Control Panel SwitchInfluent Lift Station F East Well Pump No. 8 Auto/Manual Switch in Manual DI Control Panel SwitchInfluent Lift Station F East Well Pump No. 8 VFD "On" DI VFDInfluent Lift Station F East Well Pump No. 8 Common Shutdown Alarm DI VFDInfluent Lift Station F East Well Pump No. 8 VFD Speed Command AO VFDInfluent Lift Station F East Well Pump No. 8 VFD Running Speed AI VFD
09-19-2014 Addendum 7 Page 41 of 44
Process Equipment Location Present(P)/ Future(F) Equipment Description I/O Point Description Signal Signal Source
CITY OF LAREDO SOMBRERETILLOWASTEWATER TREATMENT PLANT I/O LISTING
ELECTRICAL BUILDING No. 2 - CONTROL PANEL No. 2
Clarifier No. 1 P Clarifier Control Panel Clarifier Panel Remote Alarm DI Clarifier Cont. PanelClarifier No. 1 P Clarifier Scum Pump No. 1 Wet Well Full Alarm DI Pump Control PanelClarifier No. 1 P Clarifier Scum Pump No. 1 Motor Running DI Pump Control PanelClarifier No. 1 P Clarifier Scum Pump No. 1 Scum Pump Panel Alarm DI Pump Control Panel
Clarifier No. 2 P Clarifier Control Panel Clarifier Panel Remote Alarm DI Clarifier Cont. PanelClarifier No. 2 P Clarifier Scum Pump No. 2 Wet Well Full Alarm DI Pump Control PanelClarifier No. 2 P Clarifier Scum Pump No. 2 Motor Running DI Pump Control PanelClarifier No. 2 P Clarifier Scum Pump No. 2 Scum Pump Panel Alarm DI Pump Control Panel
RAS/WAS Pump Station P Flow Transmitter No. 1 AI RAS RackRAS/WAS Pump Station P Flow Transmitter No. 2 AI RAS RackRAS/WAS Pump Station P Flow Transmitter No. 3 AI RAS RackRAS/WAS Pump Station P Flow Transmitter No. 4 AI WAS RackRAS/WAS Pump Station P RAS Pump No. 1 VFD Speed Command AO VFDRAS/WAS Pump Station P RAS Pump No. 1 VFD Running Speed AI VFDRAS/WAS Pump Station P RAS Pump No. 1 HOA Switch in Hand DI VFDRAS/WAS Pump Station P RAS Pump No. 1 HOA Switch in Auto DI VFDRAS/WAS Pump Station P RAS Pump No. 1 VFD "On" DI VFDRAS/WAS Pump Station P RAS Pump No. 1 Motor Running DI VFDRAS/WAS Pump Station P RAS Pump No. 1 Common Fail Alarm DI VFDRAS/WAS Pump Station P RAS Pump No. 1 Failure Reset DO Control PanelRAS/WAS Pump Station P RAS Pump No. 2 VFD Speed Command AO VFDRAS/WAS Pump Station P RAS Pump No. 2 VFD Running Speed AI VFDRAS/WAS Pump Station P RAS Pump No. 2 HOA Switch in Hand DI VFDRAS/WAS Pump Station P RAS Pump No. 2 HOA Switch in Auto DI VFDRAS/WAS Pump Station P RAS Pump No. 2 VFD "On" DI VFDRAS/WAS Pump Station P RAS Pump No. 2 Motor Running DI VFDRAS/WAS Pump Station P RAS Pump No. 2 Common Fail Alarm DI VFDRAS/WAS Pump Station P RAS Pump No. 2 Failure Reset DO Control PanelRAS/WAS Pump Station P RAS Pump No. 3 VFD Speed Command AO VFDRAS/WAS Pump Station P RAS Pump No. 3 VFD Running Speed AI VFDRAS/WAS Pump Station P RAS Pump No. 3 HOA Switch in Hand DI VFDRAS/WAS Pump Station P RAS Pump No. 3 HOA Switch in Auto DI VFDRAS/WAS Pump Station P RAS Pump No. 3 VFD "On" DI VFDRAS/WAS Pump Station P RAS Pump No. 3 Motor Running DI VFDRAS/WAS Pump Station P RAS Pump No. 3 Common Fail Alarm DI VFDRAS/WAS Pump Station P RAS Pump No. 3 Failure Reset DO Control PanelRAS/WAS Pump Station P WAS Pump No. 1 VFD Speed Command AO VFDRAS/WAS Pump Station P WAS Pump No. 1 VFD Running Speed AI VFDRAS/WAS Pump Station P WAS Pump No. 1 HOA Switch in Hand DI VFDRAS/WAS Pump Station P WAS Pump No. 1 HOA Switch in Auto DI VFDRAS/WAS Pump Station P WAS Pump No. 1 VFD "On" DI VFDRAS/WAS Pump Station P WAS Pump No. 1 Motor Running DI VFDRAS/WAS Pump Station P WAS Pump No. 1 Common Fail Alarm DI VFDRAS/WAS Pump Station P WAS Pump No. 1 Failure Reset DO Control Panel
09-19-2014 Addendum 7 Page 42 of 44
Process Equipment Location Present(P)/ Future(F) Equipment Description I/O Point Description Signal Signal Source
CITY OF LAREDO SOMBRERETILLOWASTEWATER TREATMENT PLANT I/O LISTING
ELECTRICAL BUILDING No. 2 - CONTROL PANEL No. 2
RAS/WAS Pump Station P WAS Pump No. 2 VFD Speed Command AO VFDRAS/WAS Pump Station P WAS Pump No. 2 VFD Running Speed AI VFDRAS/WAS Pump Station P WAS Pump No. 2 HOA Switch in Hand DI VFDRAS/WAS Pump Station P WAS Pump No. 2 HOA Switch in Auto DI VFDRAS/WAS Pump Station P WAS Pump No. 2 VFD "On" DI VFDRAS/WAS Pump Station P WAS Pump No. 2 Motor Running DI VFDRAS/WAS Pump Station P WAS Pump No. 2 Common Fail Alarm DI VFDRAS/WAS Pump Station P WAS Pump No. 2 Failure Reset DO Control PanelRAS/WAS Pump Station P WAS Pump No. 3 VFD Speed Command AO VFDRAS/WAS Pump Station P WAS Pump No. 3 VFD Running Speed AI VFDRAS/WAS Pump Station P WAS Pump No. 3 HOA Switch in Hand DI VFDRAS/WAS Pump Station P WAS Pump No. 3 HOA Switch in Auto DI VFDRAS/WAS Pump Station P WAS Pump No. 3 VFD "On" DI VFDRAS/WAS Pump Station P WAS Pump No. 3 Motor Running DI VFDRAS/WAS Pump Station P WAS Pump No. 3 Common Fail Alarm DI VFDRAS/WAS Pump Station P WAS Pump No. 3 Failure Reset DO Control Panel
Chlorine Building P CHLORINATOR No. 1 HOA Selector Switch in "HAND" Position DI ChlorinatorChlorine Building P CHLORINATOR No. 1 HOA Selector Switch in "AUTO" Position DI ChlorinatorChlorine Building P CHLORINATOR No. 1 Solenoid Valve Called to Open/Close D0 Control PanelChlorine Building P CHLORINATOR No. 1 Solenoid Valve Opened DI ChlorinatorChlorine Building P CHLORINATOR No. 1 Feed Rate Command AO ChlorinatorChlorine Building P CHLORINATOR No. 2 HOA Selector Switch in "HAND" Position DI ChlorinatorChlorine Building P CHLORINATOR No. 2 HOA Selector Switch in "AUTO" Position DI ChlorinatorChlorine Building P CHLORINATOR No. 2 Solenoid Valve Called to Open/Close D0 Control PanelChlorine Building P CHLORINATOR No. 2 Solenoid Valve Opened DI ChlorinatorChlorine Building P CHLORINATOR No. 2 Feed Rate Command AO ChlorinatorChlorine Building P CHLORINATOR No. 3 HOA Selector Switch in "HAND" Position DI ChlorinatorChlorine Building P CHLORINATOR No. 3 HOA Selector Switch in "AUTO" Position DI ChlorinatorChlorine Building P CHLORINATOR No. 3 Solenoid Valve Called to Open/Close D0 Control PanelChlorine Building P CHLORINATOR No. 3 Solenoid Valve Opened DI ChlorinatorChlorine Building P CHLORINATOR No. 3 Feed Rate Command AO ChlorinatorChlorine Building P TON CYLINDER SCALE No. 1 Ton Cylinder Weight AI Weight ScaleChlorine Building P TON CYLINDER SCALE No. 2 Ton Cylinder Weight AI Weight ScaleChlorine Building P CHLORINE LEAK DETECTOR Scrubber Control DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 1 Low Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 1 High Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 2 Low Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 2 High Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 3 Low Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 3 High Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 4 Low Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 4 High Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 5 Low Level Alarm DI Leak Detector SystemChlorine Building P CHLORINE LEAK DETECTOR No. 5 High Level Alarm DI Leak Detector System
SO2 Building P Pump Panel No. 1 HOA Selector Switch in "HAND" Position DI Pump Panel
09-19-2014 Addendum 7 Page 43 of 44
Process Equipment Location Present(P)/ Future(F) Equipment Description I/O Point Description Signal Signal Source
CITY OF LAREDO SOMBRERETILLOWASTEWATER TREATMENT PLANT I/O LISTING
ELECTRICAL BUILDING No. 2 - CONTROL PANEL No. 2
SO2 Building P Pump Panel No. 1 HOA Selector Switch in "AUTO" Position DI Pump PanelSO2 Building P Pump Panel No. 1 Solenoid Valve Called to Open/Close D0 Control PanelSO2 Building P Pump Panel No. 2 HOA Selector Switch in "HAND" Position DI Pump PanelSO2 Building P Pump Panel No. 2 HOA Selector Switch in "AUTO" Position DI Pump PanelSO2 Building P Pump Panel No. 2 Solenoid Valve Called to Open/Close D0 Control Panel
Chlorine Contact Basin P Dissolved Oxygen Meter No. 1 AI FIELDChlorine Contact Basin P Dissolved Oxygen Meter No. 2 AI FIELDChlorine Contact Basin P Effluent Flow Meter AI FIELDChlorine Contact Basin P NPW Pressure Transmitter AI FIELDChlorine Contact Basin P NPW Pump No. 1 VFD Speed Command AO VFDChlorine Contact Basin P NPW Pump No. 1 VFD Running Speed AI VFDChlorine Contact Basin P NPW Pump No. 1 HOA Switch in Hand DI VFDChlorine Contact Basin P NPW Pump No. 1 HOA Switch in Auto DI VFDChlorine Contact Basin P NPW Pump No. 1 VFD "On" DI VFDChlorine Contact Basin P NPW Pump No. 1 Motor Running DI VFDChlorine Contact Basin P NPW Pump No. 1 Common Fail Alarm DI VFDChlorine Contact Basin P NPW Pump No. 1 Failure Reset DO Control PanelChlorine Contact Basin P NPW Pump No. 2 VFD Speed Command AO VFDChlorine Contact Basin P NPW Pump No. 2 VFD Running Speed AI VFDChlorine Contact Basin P NPW Pump No. 2 HOA Switch in Hand DI VFDChlorine Contact Basin P NPW Pump No. 2 HOA Switch in Auto DI VFDChlorine Contact Basin P NPW Pump No. 2 VFD "On" DI VFDChlorine Contact Basin P NPW Pump No. 2 Motor Running DI VFDChlorine Contact Basin P NPW Pump No. 2 Common Fail Alarm DI VFDChlorine Contact Basin P NPW Pump No. 2 Failure Reset DO Control PanelChlorine Contact Basin F NPW Pump No. 3 VFD Speed Command AO VFDChlorine Contact Basin F NPW Pump No. 3 VFD Running Speed AI VFDChlorine Contact Basin F NPW Pump No. 3 HOA Switch in Hand DI VFDChlorine Contact Basin F NPW Pump No. 3 HOA Switch in Auto DI VFDChlorine Contact Basin F NPW Pump No. 3 VFD "On" DI VFDChlorine Contact Basin F NPW Pump No. 3 Motor Running DI VFDChlorine Contact Basin F NPW Pump No. 3 Common Fail Alarm DI VFDChlorine Contact Basin F NPW Pump No. 3 Failure Reset DO Control Panel