Addendum No. 2 R1.pdf

CITY OF CORPUS CHRISTI

FINANCE & PROCUREMENT

(361) 826-3160 | 1201 Leopard Street, Corpus Christi, Texas 78401

ADDENDUM NO. 2 September 2, 2026

RFB No. 7437 | Project No. 25033 DEAAG NASCC Lift Station 288 (870113S)

The following additions, deletions, modifications, or clarifications shall be made to the appropriate sections of the plans and specifications and shall become a part of the Contract Documents. Bidder must acknowledge the receipt of this Addendum in its bid. Failure of the Bidder to acknowledge this Addendum may result in City’s rejection for the Bidder for non-responsiveness.

ADDENDUM ITEMS:

See LJA Addendum No 2 for clarifications and modification

ATTACHMENTS:

1. LJA Addendum No. 2

ALL OTHER ITEMS REMAIN UNCHANGED.

Ariel Bueno-Cortinas

Procurement Officer

Addendum No. 2 00 91 01 - 1 (DEAAG NASCC Lift Station 288 (870113S, Project No. 25033) Rev 01-13-2016

00 91 01 ADDENDUM NUMBER 2

Project: DEAAG NASCC Lift Station 288 (870113S) Project Number: 25033

Owner: City of Corpus Christi

City Engineer: J.H. Edmonds, P.E. City of Corpus Christi

Designer: LJA Engineering, Inc. Yesenia Singleton, PE

Addendum No. 2 Specification Section: 00 91 01 Issue Date: 9/2/2026

Acknowledge receipt of this Addendum in the Bid Acknowledgement Form submitted for this Project. Failure to acknowledge receipt of this addendum in the Bid Acknowledgement Form may render the Bid as non-responsive and serve as the basis for rejecting the Bid.

Make the additions, modifications or deletions to the Contract Documents described in this Addendum.

Approved by: LJA Engineering, Inc.

LJA Engineering, Inc.

TBPE Firm No. 1386

Yesenia Singleton, PE 9/1/2026 Name Date

Addendum Items:

Clarifications:

Pre-Bid Questions and Answers

Modifications:

Sheet C07: Revised the proposed force main from 4” to 6” in the Grading & Jointing Plan Sheet C13: Electrical Rack shade structure dimensions in the Construction Details.

Sheet E06: Revised the keynotes to correspond with the applicable items. Also revised the Automatic Transfer Switch (ATS) to a 3-pole ATS.

Sheet E07: Revised the conduit and conductor sizes for two routes: ATS to Pump Control Panel and ATS to Generator.

Sheet E08: Revised the backup level control narrative and removed the requirement stating that only one pump shall operate per cycle Sheet E11: Updated the ultrasonic level controller product information from Siemens HydroRanger 200 to Siemens HydroRanger 500.

Attachments:

Technical Specifications (Attachment No. 1 & 2) Plan Sheets (Attachment No. 3)

9/2/2026

Addendum No. 2 00 91 01 - 2

ARTICLE 1 – BIDDING REQUIREMENTS

1.01 ACKNOWLEDGE ADDENDA

A. Acknowledge receipt of this Addendum in the Bid Acknowledgement Form submitted for this Project. Failure to acknowledge receipt of this addendum in the Bid Acknowledgement Form may render the Bid as non-responsive and serve as the basis for rejecting the Bid.

ARTICLE 2 – MODIFICATIONS TO THE SPECIFICATIONS OR TECHNICAL SPECIFICATIONS.

2.01 ADD, DELETE OR REPLACE SPECIFICATION SECTIONS (OR TECHNICAL SPECIFICATIONS)

A. Delete the following Specification Sections:

Deleted Specification Sections (or Technical Specifications)

Section 15 16 20 – Submersible Pumps for Wastewater

B. Add the following Technical Specifications:

Added Specification Sections (or Technical Specifications)

15 10 70 – T Odor Control System

15 16 20 – T Submersible Pumps for Wastewater

ARTICLE 3 - MODIFICATIONS TO THE DRAWINGS

3.01 ADD OR DELETE DRAWINGS

A. DELETE the following Drawings:

Deleted Drawings

C07 – GRADING & JOINTING PLAN

C13 – CONSTRUCTION DETAILS (3 OF 3)

E06 – PROPOSED ONE LINE DIAGRAM

E07 – ELECTRICAL SCHEDULES

E08 – PUMP CONTROL PANEL ELEVATION

E11 – PUMP CONTROL PANEL SCHEMATIC

B. ADD the following Drawings:

Added Drawings

C07 – GRADING & JOINTING PLAN

C13 – CONSTRUCTION DETAILS (3 OF 3)

E06 – PROPOSED ONE LINE DIAGRAM

E07 – ELECTRICAL SCHEDULES

E08 – PUMP CONTROL PANEL ELEVATION

E11 – PUMP CONTROL PANEL SCHEMATIC

Addendum No. 2 00 91 01 - 3

ARTICLE 4 – CLARIFICATIONS

4.01 QUESTIONS

A. Question 1: Bid Item B12 indicates a requested cost for "Materials, equipment, personnel, labor, and incidentals required for the installation of a new lift station odor control, in accordance with the plans." Yet no plans or specifications are included for the odor control systems. Are there any requirements for the odor control system??

Answer 1: Refer to Plan Sheet C10. The lift station plan view identifies the odor control system as “Wager 2050-50 Bottom Flange Odor Control System (or approved equal).” See Attachment No. 1 for specifications.

B. Question 2: Can owner please re-upload the ITB: RFB 7437 document? We are not able to open it.

Answer 2: All documents have been uploaded to CivCast.

C. Question 3: Can various types of odor control systems be allowed to quote the contractors?

Answer 3: Yes. The specified item is the “Wager 2050-50 Bottom Flange Odor Control System (or approved equal).” See Attachment No. 1 for specifications.

D. Question 4: Since this project is on the NASCC Base, what are the Dometic requirements?

Answer 4: The DEAAG grant does not require “Buy American” compliance or impose other domestic preference requirements on the contractor.

E. Question 5: What is the correct size of the canopy/electrical rack? Sheet C-13 shows it as 29 ft long, while Sheet E-12 shows it as 18 ft long

Answer 5: The correct length is 18 feet. See the attached revised Plan Sheet C13.

Contractor shall provide drawings showing the proposed electrical equipment layout and canopy dimensions for Engineer review.

Contractor should size the canopy based on the dimensions and arrangement of the electrical equipment.

F. Question 6: What type of existing electrical meter is shown on Sheet E-12—feed-through type or C.T. type? Also, please confirm the size of the existing conduit, as no conduit size is identified on the drawing.

Answer 6: Contractor shall field investigate and verify the type and location of the existing in-house power meter. Contractor shall coordinate with the Client for relocation of the power meter, as required. Contractor shall provide conduit material and installation methods to match the existing conduits in the area. Contractor shall size all conductors and conduits based on the equipment requirements and in accordance with the NEC.

G. Question 7: The Key Notes on Sheet E-06 do not appear to correspond with the items shown on the proposed one-line diagram.

Answer 7: See Revised Sheet E06.

Addendum No. 2 00 91 01 - 4

H. Question 8: Page E-06 Generator brand not specified - Key Note 12 conduit size / conduit table E-07 - can it be adjusted to confirm?

Answer 8: Generator manufacturers are specified in Specification Section 26 32 13.

Conduit sizing will be reviewed during the submittal phase.

I. Question 9: Page E-07 Conduit Table - more for the power conduits sizing - can it be adjusted to meet to the 100-amp feeder with #3 wire and 1 1/4 conduit?

Answer 9: Conduits P-100-03 and P-102-01A are revised. See Addendum No. 2 for markups.

J. Question 10: Sheet E-06 shows conduit I-200-06, but it is not identified in the conduit table on Sheet E-07. Please clarify.

Answer 10: I-200-06 has been revised to C-200-06. C 200-06 is also identified in the conduit table. This conduit shall be provided empty with a pull string between the ATS and the SCADA enclosure.

K. Question 11: Sheet E-06 shows conduit I-200-07, but it is not identified in the conduit table on Sheet E-07. Please clarify.

Answer 11: I-200-07 has been revised to C-200-07. C 200-07 is also identified in the conduit table. This conduit shall be provided empty with a pull string between the Generator Control Panel and the SCADA enclosure.

L. Question 12: Sheet E-06 shows Pumps 1 & 2 as 10 HP, while Sheet E-09 shows the motors as 3 HP. Please confirm the correct motor horsepower.

Answer 12: On Drawing E-09, only the phase requirement for the pumps is specified. The pumps are indicated as three-phase; the 10 HP pump rating is shown on Drawing E-06.

M. Question 13: Sheet E-02 indicate Schedule 40 PVC conduit not to be used, while Sheet E- 13 shows PVC conduit as acceptable. Please clarify whether Schedule 40 PVC conduit can be used.

Answer 13: Contractor shall provide Schedule 80 PVC conduit. Schedule 40 PVC conduit shall not be permitted.

N. Question 14: Considering the location of the project, what is the domestic requirement standard that should be adhered to for the project? Buy America? Buy American? AIS?

Build America Buy America? Some other? All of the different domestic requirements are not equal. Please provide clarification for this quickly, as it can make a great deal of difference on material costs, not to mention that the material for this type of project can take a week to two weeks or better to obtain. If this isn't answered in a timely fashion, it could preclude us getting material pricing.

Answer 14: The DEAAG grant does not require “Buy American” compliance or impose other domestic preference requirements on the contractor.

O. Question 15: Can the owner please provide specs for the odor control system?

Answer 15: The specified system is the Wager 2050-50 Bottom Flange Odor Control System. See Attachment No. 1 for specifications.

Addendum No. 2 00 91 01 - 5

P. Question 16: Can the owner provide details or specs for the davit arm base?

Answer 16: No additional details or specifications will be provided. Bid Item B-15 calls for a davit arm hoist system base. Plan Sheets C07 and C08 show the base locations and require the bases to be installed flush with the concrete.

Q. Question 17: Please confirm that the Generator noise level needs to 65 dBA at the property line. What property line distance should be used to calculate noise level for this installation?

Answer 17: The generator noise level shall not exceed 65 dBA at the nearest edge of the street while operating at full rated load, as specified. The current location is acceptable at 15.67 ft. Building 8 is an industrial building and generator would only run until commercial power is restored.

R. Question 18: Spec Section 151620 does not coincide with the pump on the plans sheets.

Please provide updated plans and spec with pump data. Also allow manufactures time to review changes and put submittal together for the 3 week before bid submittal requirement.

Answer 18: Wemco Chop-Flow pumps (Part No. 701508-1), along with the pump curve data, are identified on Plan Sheet C10 and are correct for this lift station. Disregard the reference to the Flygt pump. No additional time will be allowed.

S. Question 19: Please confirm if a Flygt Pump Base (Discharge Connection) is required for this project and the size. Most manufactures can provide a bracket to mount their pump onto a Flygt compatible base and size required.

Answer 19: Trillium Flow Technologies, the Wemco pump supplier, provides its own discharge connection mounted on a pedestal. Other providers may be approved as equals if their equipment fits the required pump dimensions.

T. Question 20: Are the composite r&c the only R&C allowed on this project per the spec details on sheet C14 & C15? Details add "or approved equal". Will standard iron r&c be allowed or are the composite R&C the only ones allowed for this project?

Answer 20: Yes. Only composite rings and covers are approved for this project; iron or other metals are not permitted. “Approved equal” applies only to alternate suppliers, not alternate materials.

U. Question 21: Is Bid item B17 to be 4 or 6"? Sheet C07 calls out 4" proposed FM and sheet C10 calls out 6" DR-18 FM. I believe this is 6" per the bid form and sheet C10.

Answer 21: Disregard the 4-inch force main callout on Plan Sheet C07, “Grading & Jointing Plan.” The proposed force main shall be 6-inch DR-18, as specified in the bid items and the fitting schedule on Plan Sheet C10.

V. Question 22: Are there approved pump manufacturers specified for this project?

Answer 22: Trillium Flow Technologies is the pump manufacturer.

Addendum No. 2 00 91 01 - 6

W. Question 23: Can Duraplate 6100 be used as an approved alternative to the Jeffcoat 326?

Answer 23: Yes. Duraplate 6100 is considered an approved equal.

X. Question 24: What is the plan for the existing conduit currently running at ground level in the area where the new concrete pad will be poured? Will the conduit be relocated, buried, or otherwise protected before the concrete is placed?

Answer 24: The plan for the existing equipment is defined by Sheet Notes 1 through 6 on Drawing E-05 and Keynotes 5, 6, 7, 9, and 10 on the Existing Electrical Site Plan, Drawing E-03. Contractor shall refer to these notes and keynotes for the requirements associated with the existing equipment.

Y. Question 25: • RFB Section 01 11 00 - Summary of Work, PDF p. 206, • Section 15 16 20 - Submersible Pumps for Wastewater, PDF pp. 365-374 (see p. 372), • Civil Sheet C10 / Plans_Drawings.pdf, PDF p. 11.

Please confirm the project-specific pump basis of design for Lift Station 288, including manufacturer/model or approved basis, pump type (grinder/chopper/non-clog), required GPM, TDH, RPM, motor HP, discharge size, and impeller requirements. Please also confirm whether the Kenedy Causeway operating conditions and Flygt CP3102 reference in Section 15 16 20 are applicable to this project.

Answer 25: Wemco Chop-Flow pumps (Part No. 701508-1), along with the pump curve data shown on Plan Sheet C10, are correct for this lift station. The operating point is 350 GPM at 11.5 ft head, 3 HP, 1200 RPM, 180TY frame motor. Disregard the references to the Flygt pump and Section 15 16 20 and refer to attachment section 15 16 20 T.

Z. Question 26: • RFB Section 01 11 00 - Summary of Work, PDF p. 206, • Section 01 29 01 - Measurement and Basis for Payment, Bid Items B17- B20, PDF p. 215.

Please confirm that the force main replacement is 6-inch C900 DR-18 PVC with 6-inch fittings as identified in Bid Items B17 through B20, and revise or clarify the 4-inch references in the Summary of Work.

Answer 26: Disregard the 4-inch force main callout on Plan Sheet C07, “Grading & Jointing Plan.” The proposed force main shall be 6-inch DR-18, as specified in Bid Items B17–B20 and the fitting schedule on Plan Sheet C10.

AA. Question 27: • Bid Item B1 - Temporary Bypass Pumping, • Section 02 72 00 - Control of Wastewater Flows, • Electrical Proposed Site Plan / Plans_Drawings.pdf, PDF p. 24.

Please define the required start and end points for temporary bypass pumping. Is bypass pumping required continuously for the entire Lift Station 288 construction period, or only during demolition, tie-ins, and final commissioning? Please provide the anticipated or maximum bypass duration to be used for bidding.

Answer 27: Temporary bypass pumping is shown on Plan Sheet C03 and shall continue throughout demolition and construction. Flow-rate capacities for current conditions are shown on that sheet.

Addendum No. 2 00 91 01 - 7

BB. Question 28: • Electrical One-Line Diagram / Plans_Drawings.pdf, PDF p. 25, • Section 01 29 01 - Bid Item C4, PDF pp. 218-219, • Section 40 95 00 - Pump Station Control System, PDF pp. 568-572, • Section 01 11 00 - Summary of Work, PDF pp. 206-207.

Please clarify the Contractor's SCADA scope. Confirm whether the Contractor is only to furnish the future SCADA enclosure, terminal blocks, wiring, and dry-contact/analog interface points, with all RTU/PLC/radio/communications hardware, SCADA software, and central-system integration furnished by Owner under a future project. If current SCADA integration is required, please provide required hardware, protocols, I/O, communications method, programming scope, and Owner/system-integrator responsibilities.

Answer 28: Contractor shall provide the future SCADA enclosure as an empty enclosure of the size specified in the Contract Documents. No internal components, including terminal blocks, internal wiring, dry-contact interfaces, radio equipment, PLC, SCADA hardware/software, or instrumentation, are required to be furnished or installed by the Contractor within this enclosure.

CC. Question 29: • Section 15 16 20 - Submersible Pumps for Wastewater, PDF pp. 365-366,

• Addendum No. 1 - Revised Bid Schedule.

Please confirm whether the pre-bid pump approval requirement in Section 15 16 20 applies to RFB 7437. If applicable, please identify the current approval procedure and deadline in light of the revised bid date and the conflicting project-specific pump information.

Answer 29: Wemco Chop-Flow pumps (Part No. 701508-1), along with the pump curve data, are identified on Plan Sheet C10 and are correct for this lift station. Disregard the reference to the Flygt pump. No additional time will be allowed. Disregard the references to the Flygt pump and Section 15 16 20 and refer to attachment section 15 16 20 T.

DD. Question 30: • Electrical One-Line Diagram / Plans_Drawings.pdf, PDF p. 25, • Pump Control Panel Elevation / Plans_Drawings.pdf, PDF p. 27, • Section 26 32 13 - Generator Motor Starting, PDF pp. 524-525.

Please confirm the required motor horsepower for Pump Nos. 1 and 2. If the approved pump selection uses a different motor HP than the electrical design basis, confirm whether the 60 kW generator remains the mandatory minimum and whether pump starters, breakers, conductors, and protective-device settings are to be adjusted to the approved motor. Please confirm the required motor horsepower for Pump Nos. 1 and 2.

If the approved pump selection uses a different motor HP than the electrical design basis, confirm whether the 60 kW generator remains the mandatory minimum and whether pump starters, breakers, conductors, and protective-device settings are to be adjusted to the approved motor.

Answer 30: Refer to the applicable discipline drawings and specifications for pump performance and selection requirements.

Contractor shall coordinate the final approved pump and motor selection with the electrical design requirements. If the approved pump requires a motor that differs from the electrical design basis, Contractor

Addendum No. 2 00 91 01 - 8 shall revise the electrical equipment as necessary, including pump starters, circuit breakers, conductors, and protective devices, to accommodate the approved motor.

If the approved pump motor horsepower changes from the electrical design basis for any reason, the generator sizing calculations shall be revised accordingly. The Contractor shall verify that the generator remains adequately sized for the revised motor loads, starting requirements, and overall connected load. The 60 kW generator shall remain the minimum acceptable size.

EE. Question 31: • Pump Control Panel Elevation / Plans_Drawings.pdf, PDF p. 27, • Section 40 91 13 - Level Instrumentation, PDF p. 560, • Section 40 95 00 - Pump Station Control System, PDF p. 570.

Please confirm that the design requires one installed submersible level transducer plus one spare unit, with five float switches providing backup control. If two active level transmitters are required, please provide the location, I/O, wiring, and control logic for the second transmitter.

Answer 31: The design requires one installed submersible level transducer and one spare submersible level transducer, as specified in Specification Section 40 95 40.70-00, along with five float switches for backup level control.

The spare level transducer shall be provided as a loose, uninstalled spare. A second active level transducer is not required.

FF. Question 32: • Section 40 95 00 - Pump Station Control System, PDF p. 569, • Control Panel Wiring Schematic / Plans_Drawings.pdf, PDF p. 30.

Please confirm the required pump controller. Does the Siemens Hydro Ranger LT500 specified in Section 40 95 00 govern? If so, please confirm that the control schematic is diagrammatic only and provide any revised wiring, relay, or I/O requirements needed for the LT500.

Answer 32: The pump control schematic is generally similar to the schematic provided. The required pump controller shall comply with the requirements of Specification Section 40 95 00, Paragraph 2.01.

All schematics provided in the Contract Documents are for reference and to indicate the intended control philosophy and design intent.

Actual wiring, components, and configuration may vary based on the equipment manufacturer.

The Contractor shall coordinate with the equipment manufacturer and provide a complete and fully functional control system that meets the requirements of the Contract Documents and the intended sequence of operation.

GG. Question 33: • Section 40 95 00 - Pump Station Control System, PDF pp. 568-572, • Section 40 95 13 - Control Panel Enclosures and Panel Equipment, PDF pp. 573-598, • Electrical Control Drawings, Plans_Drawings.pdf, PDF pp. 27-30.

Addendum No. 2 00 91 01 - 9

Please confirm whether a separate PLC and/or HMI is required as part of the current Pump Control Panel. If not, confirm that PLC- and HMI-specific provisions in Sections 40 95 00 and 40 95 13 are not applicable to this project.

Answer 33: A separate PLC and/or HMI is not required as part of the pump control panel for this project. Accordingly, the pump PLC- and HMI-specific provisions contained in Sections 40 95 00 and 40 95 13 are not applicable to this project.

HH. Question 34: • RFB Section 01 11 00 - Summary of Work, PDF p. 206, • Existing Electrical Site Plan / Plans_Drawings.pdf, PDF pp. 22-23, • Electrical One-Line Diagram / Plans_Drawings.pdf, PDF p. 25, • Section 01 29 01 - Bid Item C1, PDF pp. 216-217.

Please clarify the AMI/power-meter scope. Is the Contractor to relocate and reuse the existing in-house power meter, furnish a new AMI/power-quality meter, or both? If a new meter is required, provide manufacturer/model requirements, CT/PT requirements, communications protocol, server-integration requirements, and the applicable bid item.

Answer 34: This is just to relocate the existing power meter. The power meter/transmitter is for internal metering of electrical power consumption within the overall facility. The meter shall measure power consumption with no local indication of the value back to a central monitoring facility.

II. Question 35: • Section 26 32 13 - Diesel Engine Driven Generator, PDF p. 526

Please confirm the required usable generator fuel-tank capacity: (a) 48 hours at full load,

(b) 48 hours at full load plus an additional 24 hours at idle, or (c) another operating profile.

Answer 35: This is just to relocate the existing power meter. The power Size to provide fuel for 48 hours based on 48 hours of operation at full load.

JJ. Question 36: • RFB Section 01 11 00 - Summary of Work, PDF p. 206, • Section 01 23 10 - Alternates and Allowances, PDF p. 209, • Additive Bid No. 2 - Wet Well Coating.

Please confirm that Additive Bid No. 2 represents the incremental cost to substitute Raven 405 for the base-bid Jeffcoat 326 coating, together with the specified minor structural repairs, rather than application of Raven 405 in addition to the base coating. Confirm whether the alternate price should include a credit for omitted Jeffcoat 326 work.

Answer 36: Yes. This item will be an incremental cost if Raven 405 is required.

KK. Question 37: • Section 01 29 01 - Bid Item B13, PDF p. 214, • Section 01 29 01 - Bid Item C3, PDF p. 218.

Please confirm that cast-in-place generator foundation concrete and reinforcement are paid under Bid Item B13, and that Bid Item C3 includes generator equipment, mounting/anchorage, and electrical work without duplicating the B13 concrete foundation.

Answer 37: Yes. Bid Item B13 covers only the generator foundation/concrete pad shown on Plan Sheet C11. Lump-sum Bid Item C3 covers the generator and all components necessary for proper installation.

Addendum No. 2 00 91 01 - 10

LL. Question 38: • Pump Control Panel Elevation / Plans_Drawings.pdf, PDF p. 27.

Please clarify the required pump sequence in backup-float mode. Confirm whether backup control is lead/lag operation with both pumps capable of operating simultaneously upon lag/high-level conditions and delete or revise the statement that only one pump shall operate per cycle if it is not applicable.

Answer 38: “only one pump shall operate per cycle” requirement is not applicable.

Backup control is lead/lag operation with both pumps capable of operating simultaneously.

MM. Question 39: • Electrical One-Line Diagram / Plans_Drawings.pdf, PDF p. 25, • Section 26 36 00 - Automatic Transfer Switch, PDF p. 539, •Section 26 32 13 - Diesel Engine Driven Generator, PDF p. 534.

Please provide the intended neutral/ground bonding scheme for GEN-1 and the 4-pole switched-neutral ATS, including the required generator neutral bonding location and grounding-electrode connections. Please reconcile the generator identification requirement with the 4-pole ATS design.

Answer 39: The ATS shall be provided with a solid neutral (3-pole configuration).

The generator neutral shall be bonded to ground at the generator, as shown on the one-line diagrams.

NN. Question 40: • Bid Form - Part C, PDF p. 28, • Section 01 29 01 - Bid Item C1, PDF p. 216.

Please confirm that Bid Item C1 is Existing Equipment Removal and that the word "Rental" in Section 01 29 01 is a typographical error.

Answer 40: Yes. Bid Item C1 covers removal of all existing electrical equipment and components.

OO. Question 41: Additive Bid No. 1 – Wet Well / Valve Vault:

The RFB states that additional concrete is required to raise the wet well and valve vault top slab to an elevation of 14.0 feet. Please clarify whether this means the structures are to be extended 14 feet vertically, or whether the finished top elevation is simply to be Elevation 14.00 based on the project datum. Please also provide the required extension height, wall dimensions, reinforcement, and connection detail for the raised portions.

Answer 41: Refer to Plan Sheet C08, Detail B, and Plan Sheet C09. The concrete structure is to be extended to Elevation of 14.00 feet.

PP. Question 42: Please provide the make and model number of the existing pumps currently installed or provide a clear photo of the pump nameplate/label.

Answer 42: The existing pumps are Wemco submersible Chop-Flow pumps, 6 × 4, Model CFS4, serial number 10DW08206-06-07. No photos available.

QQ. Question 43: Any chance we can get an engineering equal approval to use Aksa Power Generation for the generator unit?

Answer 43: The City does not approve equals during the bid phase. Any proposed equal product will be reviewed by the Engineer of Record (EOR) during the construction phase after contract award. The Contractor should consider well-established generator manufacturers and perform due

Addendum No. 2 00 91 01 - 11 diligence to provide a detailed specification compliance matrix and supporting documentation for review. We will also confirm the end user’s preferences and the maintenance/service capabilities associated with the proposed generator manufacturer as part of the material submittal review process.

END OF ADDENDUM NO. 2

SECTION 151070-T

ODOR CONTROL SYSTEM

151070-T Page 1 of 1 Addendum No. 2

Attachment No. 1

1. DESCRIPTION

This specification shall govern all work necessary to furnish the Odor Control system required to complete the project.

2. GENERAL

This specification defines the requirements for a Wager 2050-50 Intake Vent Scrubber 4-2050FAPC-I, consists of dry-scrubbing media contained in a fabricated aluminum plate housing, powder coated, grass green with a 4” or 6" inlet. The 4- 2050FAPC shall contain 50 lbs of dry-scrubbing media that is engineered for the removal of H2S gas. The media is contained in a corrugated plastic container that is 11” x 18” in size. The airflow shall be designed for passive applications. The configuration shall be arranged so that the contaminated air shall flow from the bottom flange and be forced upward through the media bed and discharged through ventilated openings.

3. COMPONENTS

4-2050FAPC-I shall include:

• A fabricated aluminum plate body, powder coated grass green

• 50 lbs of odor controlling media engineered in pellet form

• 4” flanged connection – Optional metric flange

• Tamper proof lockable hook and security latches

• Disposable media corrugated plastic insert

Vent Scrubber Material

• Fabricated Aluminum plate

• Corrugated plastic canister measuring 11.5” x 18" “

• Latches in 316SS

• Hooks in 316SS

• 50 lbs of odor controlling media designed for removal of H2S gas

• 4" Flanged Connection with 7.5” (191mm) bolt circle - Optional metric flange

• Plastic vent scrubbers that contain activated alumina media or carbon will not be accepted.

• Media must be non-hazardous before and after it is spent.

Media Specification

• Moisture Content: 35% Max

• Crush Strength: 35%-70% Max

• Abrasion: 4.5% Max

• Pellet Diameter: 1/16”

• If other media’s are used in this unit, it must be designed to be 25% larger with a minimum of 25% additional media.

4. MAGNUFACTURER

The manufacturer is Wager Company in Rural Hall, North Carolina or approved equal.

The contractor is responsible for testing verification; Samples of the media may be analyzed to predict the life of the system.

5. MEASUREMENT AND PAYMENT

Unless indicated otherwise in the Bid Form, Odor Control shall be measured per Lump Sum.

SECTION 15 16 20 – T

SUBMERSIBLE PUMPS FOR WASTEWATER

15 16 20 – T Page 1 of 6 Addendum No. 2

Attachment No. 2

PART 1 – GENERAL

1. DESCRIPTION

This specification shall govern all work necessary for furnishing, installing, and placing into operation the submersible pumps with accessories required to complete the project.

2. GENERAL

There shall be supplied as shown by the plans two (2) Submersible vertical centrifugal chopper pumps specifically designed to chop and condition waste solids as an integral part of pumping.

1.02 QUALITY ASSURANCE

A. All pumping equipment furnished under this Section shall be of a design and manufacture that has been used in similar applications, and it shall be demonstrated to the satisfaction of the Owner that the quality is equal to equipment made by that manufacturer specifically named herein.

B. To insure a consistent high standard of quality, the manufacturer of this pumping equipment shall comply with the requirements of the ISO 9001 Quality and ISO 14001 Environmental Management Systems, and such compliance shall be verified by an independent certification agency approved by the International Organization for Standardization. Documentation shall be submitted for approval showing compliance with this requirement, and the equipment will not be released for shipment until approved.

C. Centrifugal chopper pump, complete with motor, motor base, coupling, base, necessary guards, and all other specified accessories and appurtenances shall be furnished by the pump manufacturer to insure compatibility and integrity of the individual components and provide the specified warranty for all components. The pump manufacturer shall accept unit responsibility for each pump complete assembly.

1.03 SUBMITTALS

A. Submit shop drawings and product data under provisions of Section 00 72 00 General Conditions.

B. Submit manufacturer’s installation instructions under provisions of Section 00 72 00

General Conditions.

C. The submittal data shall be prepared, in its entirety, by the equipment manufacturer.

Shop drawings prepared by the manufacturer’s sales representative, fabrication shops, or other than the listed manufacturers will not be acceptable. No additions or modifications to the manufacturer’s submittal will be accepted, with the sole exception of a cover sheet provided by the manufacturer’s local Representative.

15 16 20 – T

Addendum No. 2 Attachment No. 2

1.04 OPERATION AND MAINTENANCE DATA

A. Submit operation and maintenance data under provisions of Section 00 72 00

General Conditions.

B. Include maintenance instructions, assembly views, lubrication instructions and replacement parts lists.

1.05 DELIVERY STORAGE AND HANDLING

Deliver, store, handle and protect under provisions of Section 00 72 00 General Conditions.

1.06 SERVICES OF MANUFACTURER

A. Furnish the services of a representative of the pump manufacturer to assist in adjusting and testing the equipment furnished, to supervise the initial operation, and to make any final adjustments as may be necessary to assure the Owner that the pump(s) is (are) in satisfactory operating condition.

B. Furnish sufficient supervision, data, and information from the manufacturer to train operators in the proper operation and maintenance of the pump(s) furnished.

PART 2 – PRODUCTS

2.01 PERFORMANCE

The pumps shall be designed for continuous operation and will be operated continuously under normal service. To minimize operation power costs, the hydraulic efficiencies listed for each pump are the minimum acceptable and must be guaranteed by the manufacturer.

2.02 OPERATION CRITERIA

Flow

(GP

M)

TDH

(Ft)

Max.

Pump

RPM

Pump Efficiency

Min. Shut-off TDH

Moto r HP

Motor

RPM

Design Condition

350 11.50 880 54.63 18.34 3 1200

A. PUMP CRITERIA

1. Minimum suction diameter 6”

2. Minimum discharge diameter 6”

2.03 PUMPS

A. Design

1. The basic design shall be a vertical end suction clog-free pump, utilizing a centrifugal chopper impeller. The overall pump design shall combine high efficiency, low required NPSH, and the ability to chop or condition waste solids, rags or other fibrous material without plugging.

Addendum No. 2 Attachment No. 2

2. The casing shall be of semi-concentric design, with the first half of the circumference being cylindrical beginning after the pump outlet, and the remaining circumference spiraling outward to the 150 lb. flanged centerline discharge.

3. The hydraulic design of the impeller shall combine the action of a semi-open centrifugal impeller with the action of a fixed blade to chop and/or condition the incoming solid materials.

a. The front of the impeller shall have hardened, spiraled vanes that completely wrap around the center of rotation, pulling material into the cutting area and assuring positive and complete chopping action. The single piece removable and replaceable cutting bar shall extend completely across the cutting vanes of the impeller.

b. The reverse side of the impeller shall include pump-out vanes, each with two cutting slots and a centered labyrinth to prevent any material from reaching the seal area, whether the pump is running or not. The cutting slots shall function integrally with a replaceable cutter ring mounted on the backplate.

c. The impeller/cutter bar clearance shall be externally adjustable by means of adjustment screws. Each adjusting screw shall incorporate a mechanism for positively advancing, positively retracting and positively locking the position of the chopper impeller, so that the necessary running clearances between the chopper impeller and cutter bar can be maintained for optimum chopping capability. This clearance adjustment shall be accomplished without loosening any pump mounting bolts, moving pump flanges or feet, and without the need to dismantle any portion of the pump.

4. The backplate shall be a separate component part, and shall not be integral to the bearing frame and allow removal of the pump components from above the casing. The backplate shall be sealed to the bearing frame with “O” rings that so that it can be moved axially for external adjustment of impeller-to-cutter bar clearance. Backplates with mechanical seals are to be axially registered to the bearing frame. Backplates for packing are not required to be registered.

a. The backplate shall incorporate the raised face portion of the seal labyrinth to engage the machined grooves in the rotating impeller, and shall incorporate 4 cutter teeth that engage with cutting slots in the back of the impeller. The 4 cutting teeth shall be incorporated as a part of a machined ring that registers into the backplate to insure proper alignment, and shall be independently replaceable as a separate component.

b. In order to maintain optimum running clearances between the rear cutting slots on the back of the impeller and replaceable cutter

Addendum No. 2 Attachment No. 2 teeth on pumps with a discharge of 6-inches and larger, the clearances between these components shall be externally adjustable by means of adjustment screws. Each adjusting screw shall incorporate a mechanism for positively adjusting the position of the cutter teeth so that the necessary running clearances between the replaceable cutter teeth and cutter slots can be maintained for optimum chopping capability. This clearance adjustment shall be accomplished without loosening any pump mounting bolts, moving pump flanges or feet, and without the need to dismantle any portion of the pump. This adjustability is not available for pumps with 3-inch and 4-inch discharge flanges.

c. The 4 cutting tooth ring shall be attached to the backplate with socket head cap screws, so that it can be independently and easily replaced, without the need to replace the entire backplate for renewal of the cutting surfaces.

5. Suction and discharge flanges shall be drilled to meet ANSI 150 class bolting.

B. Materials of Construction

1. Casing and Backplate: Casing shall be ASTM A536 ductile iron.

Backplate shall be ASTM A576 steel with all water passages to be smooth, and free of blowholes and imperfections for good flow characteristics.

2. Impeller: Shall be semi-open type with pump out vanes to reduce seal area pressure. Chopping of materials shall be accomplished by the action of the cupped and sharpened leading edges of the impeller blades moving across the cutter bar at the intake openings, with a set clearance between the impeller and cutter bar of .010” to .015”. Impeller shall be ASTM A148 cast alloy steel, case hardened to Rockwell C60. The impeller shall be threaded to the shaft and shall have no axial adjustments and no set screws.

3. Cutter Bar: Shall be recessed in to the pump bowl, and shall extend diametrically across the entire funnel shaped pump suction opening. Cutter bar shall be T1 alloy steel hardened to Rockwell C60.

4. Replaceable cutting teeth: A cutter tooth ring shall incorporate 4 cutting teeth and shall be bolted into a radial register in the backplate and shall engage and intermesh with the cutting slots machined into the back of the impeller, reducing and removing materials from the mechanical seal/packing area. Replaceable cutters shall be ASTM A148 cast alloy steel case hardened to Rockwell C60.

Addendum No. 2 Attachment No. 2

5. Pump Shafting: The pump shaft and impeller shall be supported by standard AFBMA series bearings. Shafting shall be AISI 4140 heat treated steel, with a diameter of sufficient size to minimize deflection during solids chopping.

6. Bearings: Shaft thrust in both directions shall be taken up by two back-to back mounted single-row angular contact ball bearings. At any speed up to and including pump maximum speed, the bearings shall be rated with a minimum B10 bearing life of 100,000 hours at the pump Best Efficiency Point (BEP).

7. Bearing Housing: Shall be ASTM A536 ductile cast iron, and machined with piloted bearing fits for concentricity of all components. Bearing housing shall be oil bath lubricated with ISO Gr. 68 turbine oil and a side mounted sight glass to provide a permanently lubricated assembly. Nitrile double lip seals are installed to provide sealing at each end of the bearing housing.

8. Seal: Pump stuffing box shall be designed for maximum flexibility in allowing shaft seal with Flushless mechanical Seal system specifically designed to require no seal flush, through elimination of the stuffing box.

The seal shall be made of Duplex stainless steel and shall be cartridge type with Viton O-rings, a tungsten carbide rotating seal face and a silicon carbide stationary seal face. The cartridge seal shall be pre-assembled and pre-tested so that no seal settings or adjustments are required. Any springs used to push the seal faces together must be shielded from the fluid to be pumped

9. Inlet manifold: The pump assembly shall be mounted vertically with ANSI class 150 lb. standard flanges, suction elbow cleanout, and mounting plate.

The suction spool shall be manufactured of ductile cast iron ASTM A536 and shall include a cast casing cleanout of ductile iron ASTM A536. The mounting support plate shall be cast integral to the suction spool piece.

10. Motor Pedestal. The motor shall be mounted on a pedestal, which shall be rigidly attached to the pump, and shall have openings with removable covers large enough to permit the installation, alignment and inspection of the drive coupling.

a. The motor pedestal shall be a single piece casting of ductile iron, ASTM A536. The pedestal shall be of sufficient strength to support the entire weight of the motor.

b. Shaft Coupling: Bearing housing and motor pedestal design is to provide accurate, self-aligning mounting for a C-faced electric motor. The pump manufacturer shall furnish and install a flexible coupling between the motor shaft and the pump shaft.

Addendum No. 2 Attachment No. 2

11. Pump mounting:

a. Vertical Suction Base Elbow Mounting.

1) The pump shall be supported by a ductile iron base elbow furnished by the pump manufacturer with a hand hole opening large enough to permit access to the suction line and impeller

2) The base shall be rugged enough to support the full weight of the pump and motor.

12. Guide Brackets:

A guide bracket shall be pump compatible and shall allow raising and lowering of the pump in the wet well without binding with the guide rails.

No special adjustment shall be necessary to ensure proper alignment.

Guide brackets shall be cast iron or stainless steel.

2.04 MOTOR

A. Motor shall be 180 type, 3 HP, 3 Phase, 60 Cycle, 480 Volt, 1,200 RPM, and shall be connected to the pump by the drive method specified. All motors shall be of nationally known manufacture and shall conform to NEMA standards and specifications.

PART 3 – MEASURMENT AND PAYMENT

Pumps and accessories shall not be measured for pay but shall be subsidiary to the appropriate bid item.

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YESENIA SINGLETON

102398 sdeleon Text Box ADDENDUM No. 2 ATTACHMENT No. 3

(PAGE 1 OF 6)

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102398 sdeleon Text Box ADDENDUM No. 2

(PAGE 2 OF 6)

PROPOSED ONE LINE

DIAGRAM

N.T.S.

J

3P

TMB-1

3P

TMB-2

3P

TMB-3

TMB/3P

60AT

2P

TMB4

KEYED NOTES:

CONTRACTOR TO COORDINATE POWER FROM EXISTING 480V

PANELBOARD. PROVIDE POWER FROM EXISTING 480-VOLT

PANELBOARD PP-HA LOCATED WITHIN THE FACILITY.

CONTRACTOR SHALL FURNISH AND INSTALL ONE (1) 60A, 3-POLE

CIRCUIT BREAKER IN PANELBOARD PP-HA. BREAKER SHALL BE

INSTALLED IN AVAILABLE SPACES 4, 6, AND 8. CONTRACTOR SHALL

PROVIDE AND INSTALL ALL REQUIRED CONDUIT AND

CONDUCTORS FROM PANELBOARD PP-HA TO THE DESIGNATED

LOAD AS SHOWN ON THE DRAWINGS. UPDATE PANELBOARD

DIRECTORY TO REFLECT NEW CIRCUIT INSTALLATION. ALL WORK

SHALL BE IN ACCORDANCE WITH PROJECT SPECIFICATIONS AND

APPLICABLE CODES.

CONTRACTOR TO PROVIDE AND INSTALL NEW MAIN CIRCUIT

BREAKER 100KA/100A/4W/3P/600V.

CONTRACTOR SHALL PROVIDE & INSTALL SPD, EATON

SPD-200-480Y-3+N OR EQUAL, IN A NEMA 4XSS6 ENCLOSURE.

CONNECT TO LOAD SIDE. SURGE PROTECTION DEVICE SHALL BE

INSTALLED SUCH THAT FACTORY LEADS ARE UTILIZED WITHOUT

SPLICES.

ADJUST MCB PER MANUFACTURERS REQUIREMENTS FOR LOAD.

ADJUST MCP SETTINGS FOR LOAD OF MOTOR HORSE POWER

RATING AS SHOWN.

CONTRACTOR SHALL COORDINATE MOTOR HP RATINGS WITH

APPROVED SHOP DRAWING BEFORE ELECTRICAL SHOP

DRAWINGS ARE SUBMITTED FOR REVIEW.

IN LIEU OF THE MAXIMUM AVAILABLE FAULT CURRENT MARKING

AS REQUIRED BY 110.24, A PERMANENTLY AFFIXED LABEL SHALL

BE APPLIED WITH THE AVAILABLE FAULT CURRENT AT THE TIME OF

INSTALLATION AND CALCULATION. THE LABEL SHALL BE 2" X 3" IN

SIZE AND SHALL BE BLUE LETTERING ON A CONTRASTING

BACKGROUND. THIS LABEL SHALL ALSO INCLUDE THE DATE OF

THE CALCULATION.

PROVIDE AND INSTALL AUTOMATIC TRANSFER SWITCH, DELAYED

TRANSITION WITH RATINGS AS SHOWN, NEMA 4X 316SS, ASCO OR

EQUAL.

PROVIDE AND INSTALL SPD, EATON SPD-100-240S-2P OR EQUAL, IN

A NEMA 4XSS6 ENCLOSURE. CONNECT TO LOAD SIDE.

PROVIDE AND INSTALL SPD (SURGE PROTECTION DEVICE), EATON

SPD-100-480Y-3+N OR EQUAL, IN A NEMA 4XSS6 ENCLOSURE.

CONNECT TO LOAD SIDE.

ELECTRICAL CONTRACTOR SHALL PROVIDE AND INSTALL PUMP

CONTROL PANEL.

ELECTRICAL CONTRACTOR TO PROVIDE AND INSTALL A STANDBY

DIESEL GENERATOR. GENERATOR RATING SHOWN IS THE

MINIMUM SIZE REQUIRED, IN THE CASE THAT ELECTRICAL

CONTRACTOR PROVIDES A LARGER SIZE GENERATOR, THE

CONDUIT AND CONDUCTORS SIZES SHALL BE ADJUSTED

ACCORDINGLY.

CONTRACTOR SHALL FURNISH AND INSTALL A 24" H X 24" W X 12"

D, NEMA 4X, TYPE 316 STAINLESS STEEL ENCLOSURE COMPLETE

WITH PAINTED STEEL BACK PANEL. SCADA EQUIPMENT

INSTALLATION IS BY OWNER UNDER A SEPARATE FUTURE

PROJECT.

SUBMERSIBLE CABLE SHALL BE PROVIDED AND INSTALLED PER

THE PUMP MANUFACTURER REQUIREMENTS FROM THE

PROPOSED PUMP CABLE TERMINAL BOX TO THE PUMP MOTOR.

TRANSDUCER AND FLOAT SWITCHES SUBMERSIBLE CABLE SHALL

BE PROVIDED AND INSTALLED PER THE MANUFACTURER

REQUIREMENTS FROM THE PROPOSED INSTRUMENTATION

TERMINAL BOX TO THE DEVICES.

CSBE SEAL SHALL BE SIZE PER THE CABLE OVERALL DIAMETER

AND THE CONDUIT SHALL BE SIZE PER THE CSBE SEAL

MANUFACTURER RECOMMENDATIONS.

PROVIDE AND INSTALL LEVEL TRANSDUCER, PMC VERSALINE P/N:

VL2000 SERIES

CONTRACTOR SHALL SIZE THE CONDUCTORS FOR THE IN-HOUSE

POWER METER BASED ON THE RATING OF THE METER, WHICH

SHALL BE FIELD VERIFIED PRIOR TO INSTALLATION. THE

CONDUCTORS SHALL BE INSTALLED IN A 1-INCH CONDUIT.

GENERAL NOTES:

A. CONTRACTOR TO COORDINATE BETWEEN VENDORS TO ENSURE ELECTRICAL EQUIPMENT RATINGS ARE COORDINATED WITH PROPOSED MECHANICAL PUMPS PRIOR TO SUBMITTING ELECTRICAL EQUIPMENT SHOP

DRAWINGS.

B. ALL EQUIPMENT MUST BE ELECTRICALLY BONDED TOGETHER VIA STATION GROUNDING SYSTEM.

C. CONTRACTOR SHALL VERIFY AVAILABLE FAULT CURRENT WITH UTILITY AND PROVIDE EQUIPMENT RATED ACCORDINGLY. UNLESS NOTED OTHERWISE, MINIMUM EQUIPMENT RATING SHALL BE NO LESS THAN 42KAIC.

D. IT IS THE ELECTRICAL CONTRACTOR’S RESPONSIBILITY TO PROVIDE AND INSTALL ALL RACEWAYS AND ENCLOSURES CUMULATIVELY. BETWEEN THE DUCT BANK DETAILS, PANEL SCHEDULE AND CIRCUIT SCHEDULE, THE CIRCUIT SCHEDULE IS SCHEMATIC AND PANEL SCHEDULES TAKE PRECEDENCE OVER THE DUCT BANK

DETAILS.

E. ALL ELECTRICAL EQUIPMENT ENCLOSURES SHALL BE NEMA 4X 316SS.

F. IT IS THE ELECTRICAL CONTRACTORS RESPONSIBILITY TO PROVIDE AND INSTALL ANY RACEWAYS AND CONDUCTORS CUMULATIVELY BETWEEN THE DUCT BANK DETAILS, PANEL SCHEDULE, I/O SCHEDULE, AND CIRCUIT SCHEDULE. THE CIRCUIT SCHEDULE, I/O SCHEDULE AND PANEL SCHEDULES TAKE PRECEDENCE OVER

THE DUCT BANK DETAILS.

G

PROPOSED DELAYED TRANSITION ATS

100A, 600V, 4PDT

NEMA 4X, 316 S.S

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E

PROPOSED MAIN CIRCUIT BREAKER

NEMA4X, 316 S.S

PROPOSED PUMP CONTROL PANEL "PCP", 100A, 480/277V, 3P, 3W, 42KAIC, NEMA 4X, 316 SS ENCLOSURE

G

#2 BARE COPPER

GEC SLEEVE IN PVC

MCB

PUMP NO.1 PUMP NO.2

PROP PUMP CABLE TERMINAL BOX

(TYP OF 2)

3-PHASE POWER DISTRIBUTION BLOCK

30A 30A

PROP CSBE SEAL

(TYP)

MS

TS

MS

TS

G

2 7

GND

6 6

8 8

3/4" Ø x 20'-0" GROUND ROD & TEST WELL

TO ESTABLISH SYSTEM GROUND PER NEC.

#2 BARE COPPER

GEC SLEEVE IN PVC

SPD3

SCADA

ENCLOSURE

PROP CSBE SEAL

(TYP)

LEVEL TRANSDUCER

LT

PROPOSED 60A FEEDER FROM

PP-HA CKT#4,6,8

480V PANELBOARD LOCATED INSIDE

EXISTING BUILDING

GND

BC

ALT

60kW/75kVA, 0.8PF

480/277V, 90A, 3PH, 4W

STANDBY DIESEL

GENERATOR "GEN-1"

T

100AT

100AF

J

NEU

GROUND ROD

#4/0 GEC

GROUND TEST WELL

EMERGENCY STOP

SWITCH

TO MINI POWER

CENTER "MPC-1"

P-100-01

SPD1

P-103-01

P-100-02

P-100-03

P-102-01A

C-101-01

P-101-01 P-101-02

P-200-37

LIGHT #1

I-200-05B

PROP EYS

SEAL-OFF

(TYP)

30A

SPD2

I-200-07

I-200-06

20A

J J

FS5

FS1

FS2

FS3

FS4 HIGH LEVEL ALARM

PROP INSTRUMENTATION

TERMINAL BOX

I-200-01B

P-200-02AP-200-01A

P-200-02B

P-200-30

I-200-05A

I-200-01A

P-200-33

P-200-31

C-200-02C-200-01

TO SCADA

ENCLOSURE

SZ: 1

SSMOR

SZ: 1

SSMOR

FLOAT

SWITCHES

16 16

P-200-01B

CONTROL

PANEL

GFCI

RECEPTACLE

P-200-32

BEACON

ALARM LIGHT

P-200-34

PUMP 2 ON

PUMP 1 ON

ALL PUMPS OFF

LOW LEVEL

P-102-01B

P-101-03 P-101-04

T

JWH

T

#6 BARE COPPER

GEC SLEEVE IN PVC

PROP MINI POWER

CENTER "MPC-1"

7.5KVA, 480V,

120/240V, 3PH,

NEMA 3R

P-200-36

60AT

100AF

METER

EXISTING

RELOCATED IN-HOUSE

POWER METER

TO SCADA

ENCLOSURE

10 10

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,3 sdeleon Text Box ADDENDUM No. 2

(PAGE 3 OF 6)

GENERAL NOTES:

A. IT IS THE ELECTRICAL CONTRACTORS RESPONSIBILITY TO PROVIDE AND INSTALL ANY

RACEWAYS AND CONDUCTORS CUMULATIVELY BETWEEN THE DUCT BANK DETAILS, PANEL

SCHEDULE, I/O SCHEDULE, AND CIRCUIT SCHEDULE. THE CIRCUIT SCHEDULE, I/O

SCHEDULE AND PANEL SCHEDULES TAKE PRECEDENCE OVER THE DUCT BANK DETAILS.

B. CONTRACTOR SHALL BE RESPONSIBLE TO SIZE THE CONDUIT ACCORDINGLY WITH THE

CSBE SEAL INSTALLED.

C. EACH SINGLE POLE CIRCUIT SHALL BE PROVIDED A DEDICATED NEUTRAL, IDENTIFIED WITH

CORRESPONDING CIRCUIT NUMBER.

D. EACH CONDUIT SHALL BE TAGGED WITH THE PANEL DESIGNATOR AND CIRCUIT NUMBERS

THAT ARE IN THE CONDUIT AT EACH BOX, STUB UP, TRANSITION THRU WALL AND END OF

CIRCUIT.

E. THE CONTRACTOR SHALL PROVIDE POWER TO ALL GENERATOR ACCESSORIES IN

ACCORDANCE WITH THE APPROVED SUBMITTALS. IF REQUIRED, THE CONTRACTOR SHALL

MODIFY OR UPGRADE CIRCUIT BREAKERS WITHIN THE MINI POWER CENTER TO

ACCOMMODATE THE LOAD. THE CONTRACTOR SHALL ALSO UPDATE CONDUIT AND

CONDUCTOR (C&C) AS REQUIRED TO SUPPORT THE NEW OR REVISED POWER

CONNECTIONS, INCLUDING ROUTING, SIZING, AND TERMINATION. ALL SUCH UPDATES

SHALL BE PERFORMED AT NO ADDITIONAL COST TO THE OWNER. ALL C&C AND CIRCUIT

BREAKER REVISIONS SHALL BE SUBMITTED VIA RFI TO THE ENGINEER FOR REVIEW AND

APPROVAL PRIOR TO IMPLEMENTATION.

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NOTE B

NOTE B

NOTE B

NOTE B

10/21/2024

Abhishek -07/02/2026

2" 3#3, #8GND

2" 3#3, #8GND

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(PAGE 4 OF 6)

EXHAUST HOOD WITH

LOUVER AND FILTER,

PROVIDE THE MATERIAL THE

SAME AS OF THE PUMP

CONTROL PANEL ENCLOSURE

HORN

R R

R R

G G

HORN

SILENCE

ETM

PUMP #1

ETM

PUMP #2

PUMP #1 PUMP #2

PUMP #1 PUMP #2

PUMP #1 PUMP #2

PUMP #1

PUMP CONTROL PANEL ENCLOSURE

ELEVATION

NTS

PUMP #2

PUMP #1 PUMP #2

RUNNING RUNNING

OVERTEMP

SEAL FAIL

H/O/A

RESET

OVERTEMP

SEAL FAIL

H/O/A

RESET

FLOAT BACKUP

RESET

CONTROL MODE

NORMAL/BACKUP

ALARM

INTAKE FAN WITH HOOD,

PROVIDE THE MATERIAL

THE SAME AS OF THE

PUMP CONTROL PANEL

ENCLOSURE

NOTE: ENCLOSURE MINIMUM SIZE 48"Wx60"Hx12"D, NEMA 4XSS6 DEAD FRONT W/ INNER BACK PANEL HOFFMAN OR

EQUAL.

48"

FRONT VIEW

R R

PUMP #1 PUMP #2

OVERLOAD OVERLOAD

G G

PUMP #1 PUMP #2

CALLED CALLED

A

CONTROL

POWER ON

A

R

CONTROLS

PRIMARY

BACKUP

INDICATOR

PHASE FAIL

BYPASS

R

PHASE FAIL

BYPASS

B

B

B

LEAD PUMP

LAG PUMP

HIGH…