C04_Attachment 1 SOW.docx

UNITED STATES DEPARTMENT OF AGRICULTURE

BELTSVILLE AGRICULTURAL RESEARCH CENTER

FACILITIES SERVICE

UTILITIES MANAGEMENT UNIT

BUILDING 426A, BARC-EAST

10300 BALTIMORE AVENUE

BELTSVILLE, MARYLAND 20705-2350

STATEMENT OF WORK

BARC Westside WWTP Influent and Equalization Basin Pumps & Controls Eastside WWTP Sludge Holding Tanks Blowers

To furnish and install Submersible Pumps for the Westside WWTP Influent Pump Station and Equalization Basin complete with electrical cables, lifting cables, controls and motor starter and repairing/replacing the Eastside WWTP Sludge Holding Tanks Blowers.

BELTSVILLE AGRICULTURAL RESEARCH CENTER

BELTSVILLE, MARYLAND

May 2026

GENERAL REQUIREMENTS

1. GENERAL

1.1. BACKGROUND

The United State Department of Agriculture (USDA), Agricultural Research Services (ARS), Beltsville Agricultural Research Center (BARC) owns and operates water and wastewater systems that include eight (8) Water Wells, a Raw Water System, a Water Treatment Plant (WTP), a Water Distribution System (WDS), a Wastewater Collection System (WWCS), and two Wastewater Treatment Plants (WWTP) located in Beltsville, MD. The WTP and both WWTP are permitted to operate by the Maryland Department of the Environment (MDE).

The two wastewater treatment plants which require some improvements for their processes serve both sides of the campus, the Eastside WWTP is rated at 0.62 MGD and serves the BARC campus east of Baltimore Ave where the Westside WWTP is rated at 0.1 MGD and serves the west portion of the campus.

1.2. PROJECT LOCATION

Beltsville Agricultural Research Center (BARC) is located in Beltsville, MD. Work shall be performed within the entire BARC facilities, but the major facilities are as follows:

Eastside Wastewater Treatment Plant – Building 218 Westside Wastewater Treatment Plant – Building 015

1.3. INTENT

The intent of this solicitation is to award one contract for the process improvements for the sludge holding tanks blowers at the Eastside WWTP as well as the influent and equalization basin pump stations at the Westside WWTP.

1.4. CONTRACTOR’S QUALIFICATIONS

The minimum qualifications for a contractor to be qualified for this contract is a combination of the following:

A. Contractor Personnel

1. Project Manager and Superintendent shall both be experienced with water and wastewater pumping and construction, each with at least 7 years’ experience.

2. Both shall demonstrate experience with resumes including similar projects description.

3. For both, each shall show at least 3 projects including pumping systems and controls and at least one project for blowers.

2. ADMINISTRATIVE

2.1. USDA POINTS OF CONTACT (POCS)

2.2. SECURITY

All employees of the general contractor and subcontractors shall comply with ARS security management program, obtain permission of the ARS Location Manager, be identified by project and employer by wearing contractor-issued identification badges at all times on ARS property, and restricted from unauthorized access.

2.3. SAFETY/OSHA CERTIFICATION

A. Prior to commencing work, the general contractor shall provide proof that an OSHA identified “competent person” (CP) (29 CFR 1926.32(f) will maintain a presence at the work site whenever the general or subcontractors are present.

"Competent person" means one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.

B. The BARC facilities identified above and the work to be performed under this contract include many locations and activities that will require certain safety measures (confined space, trip hazard, fall hazard, chemical hazard, …etc.), the contractor is required to have OSHA Certified personnel enter such facilities or perform such activities.

C. Training:

1. All employees of the general contractor or subcontractors shall have the 10-hour OSHA certified Construction Safety course and /or other relevant competency training. Supervisors shall have completed the 30-hour OSHA training.

2. Submit training records of all such employees to the Contracting Officer for approval before the start of work.

2.4. INVOICING AND PAYMENT

A. The contractor shall submit all invoices and progress payments to the Invoice Processing Platform (IPP) for payment only after CO or authorized Government representative has validated with the PM that invoices are appropriate for the work accomplished. The CO will be the final approver of payment once work has been verified.

B. Invoices will be handled in accordance with the Prompt Payment Act and FAR Clause 52.232-33. Contractors shall assign an Identification number to each invoice.

C. The contractor shall submit a Schedule of Values indicating each individual project task with the associated cost. The schedule shall be updated and submitted with each progress payment requested.

1. The schedule of values shall be submitted and approved fourteen (14) calendar days prior to the notice to proceed.

D. The contractor shall consult the CO for further information regarding invoicing and payment for completed services rendered and final project close-out payment, when applicable.

3. SCOPE OF WORK: BASE CONTRACT ITEMS

3.1. GENERAL REQUIREMENTS

Project Management activities and deliverables for this project include, but are not limited to the following:

A. Project Schedules

1. The contractor shall coordinate with the CO, PM/COR, and USDA personnel to schedule site visits and obtain access to facilities as needed.

2. Reference FAR 52.236-15 Schedules for Construction Contracts and DIVISION 01 32 16.00 20: Small Project Construction Progress Schedules of the project specifications. The contractor shall not begin work until the project schedule is approved by the CO.

a. The contractor shall submit one electronic copy of the project schedule

b. An updated copy of the schedule shall be submitted with each progress payment request B. Formal Meetings

1. Any meeting (deemed formal by the contractor, the CO, or the PM/COR) will have the meeting minutes prepared by the contractor and a copy provided to the CO and PM/COR. The minutes will include Date, Name of Attendees with contact info, Old Business, and New Business subjects (or narratives).

2. Regardless of which party requests a meeting, the contractor may be required to provide hard copy pictures of the topics or concerns to be discussed. Each topic will be linked to a contract specification section number and/or subject area denoted by the document referenced and associated page number. Topics discussed will also include a corrective action, responsible party, and associated completion date.

C. Project Permitting and Environmental Compliance

1. Pursuant to FAR 52.236-7 Permits and Responsibilities, the contractor shall be responsible for all project permitting, if required for completion, according to federal, state, and local laws and regulations.

2. All applicable permits and Environmental Impact Assessment analysis requirements shall be coordinated through the Maryland Department of the Environment (MDE) or appropriate federal and state authorities.

3. The contractor shall submit permits, environmental analyses, once approved, to the CO, COR, PM, and USDA representatives in electronic copy format.

D. Disposal of Waste

1. The contractor is responsible for disposing of all waste produced as a result of work being performed to include replaced pumps, motors, mechanical parts, hoses, belts, associated systems, and solid waste following regular work activities.

2. Disposal of all spent oil, lubricants, coolants, electrical or mechanical parts and all other associated waste will be removed from the work location and disposed of at the contractor’s expense in accordance with 40 CFR Chapter I Subchapter I: Solid Wastes and 40 CFR Part 279: Standards for the Management of Used Oil.

E. Submittals

1. General:

a. Schedule submittals well in advance of the need for the material or equipment for construction. Allow time to make delivery of material or equipment after submittal is approved

b. Develop a submittal schedule that allows sufficient time for initial review, correction, resubmission and final review of all submittals. The OWNER will review and return submittals to the CONTRACTOR as expeditiously as possible and within a maximum period of two weeks.

c. Provide Shop Drawings, administrative, quality control, and contract closeout submittals in accordance with the requirements of this specification.

d. The OWNER’S review of submittals covers only general conformity to the contract documents. The CONTRACTOR is responsible for any errors, omissions or deviations from the Contract requirements; review of submittals in no way relieves the CONTRACTOR from his obligation to furnish required items according to the contract documents.

e. Submit five (5) copies of documents unless otherwise specified in the contract documents. In addition, one electronic copy of each submittal shall be furnished to the OWNER.

f. Action Submittal Dispositions: OWNER will review, mark, as appropriate, and distribute marked-up copies as noted:

APPROVED: CONTRACTOR may incorporate product(s) or implement Work covered by submittal.

APPROVED AS NOTED: CONTRACTOR may incorporate product(s) or implement Work covered by submittal, in accordance with ENGINEER’s notations.

PARTIAL APPROVAL, RESUBMIT AS NOTED: Make corrections or obtain missing portions and resubmit. Except for portions indicated, CONTRACTOR may begin to incorporate product(s) or implement Work covered by submittal, in accordance with OWNER’s notations.

REVISE AND RESUBMIT: CONTRACTOR may not incorporate product(s) or implement Work covered by submittal.

g. Distribution of all submittals will be made as follows: Four copies of the furnished submittal will be retained in OWNER’s file. Remaining copy returned to CONTRACTOR appropriately annotated.

h. Apply CONTRACTOR'S stamp, certifying that the items have been reviewed in detail and are correct and in accordance with Contract Documents, except as noted by any requested variance. As a minimum, Contractor's Stamp shall include:

· CONTRACTOR'S name.

· Certification statement that the CONTRACTOR has reviewed the submittal and it is in compliance with the Contract Documents.

· Signature line for CONTRACTOR.

2. Shop Drawings as a minimum shall include:

a. Make, model, weight, and horsepower of the equipment assembly.

b. Complete catalog information, descriptive literature, dimensions and drawings, cut sheets, Specifications, identification of materials of construction.

c. Performance data curves showing oxygen transfer rates, minimum submersion depth, submersion depth for automatic start, and horsepower demand over the entire operating range. Performance data shall also include schematics of the active mixing zones/areas of the aerator.

d. Power and control wiring diagrams, including terminals as well as Instrumentation and control data.

e. Complete motor nameplate data, as defined by NEMA, motor manufacturer, and including any motor modifications. List any motor special features being provided.

f. Information on bearing life and type of bearing lubrication recommended.

g. Factory-finish system including epoxy coating system for cast iron and steel components. Include the manufacturer’s descriptive technical catalog literature and specifications and hazardous communication data sheets.

3. Provide Quality Control Submittals as follows:

a. Operations and Maintenance Data and manuals.

b. Manufacturer’s Certification of Compliance that the factory finish system is identical to the requirements of these specifications.

c. Manufacturer’s Certificate of Proper Installation.

d. Manufacturer’s Training Program.

e. Equipment Testing and Field Startup Report.

F. Field Services

1. The manufacturer for each pump system and each control system provided shall provide at least one (1) day of field service by a qualified service engineer to inspect and test for lubrication, alignment, free operation, and to instruct the Owner's personnel in the proper operation and maintenance of the equipment. Instructions for long-term storage and maintenance of the pumps and motors shall be provided.

2. The manufacturer for each pump control system provided shall provide at least one (1) day of field service by a qualified service engineer to inspect and test for correctness of installation, operations according to specifications, proper installation locations, and to instruct the Owner's personnel in the proper operation and maintenance of the equipment.

3. Manufacturer's field engineer or representative shall certify that the pump stations and control systems as well as blower systems have been installed in accordance with the manufacturer's instructions and that test operation of the systems have been satisfactorily completed and that the aerators had met performance requirements.

G. Startup and Testing

1. All costs of testing and instructions shall be at no cost to the Owner.

3.2. SPECIFIC REQUIREMENTS

The following items shall be part of scope of work for this contract. For each item, the contractor shall provide all labor, materials, equipment, incidentals, and all other items necessary and required to fully install the following items in complete and operational condition complete with all mechanical, electrical, and controls components to fully operate according to the provided performance requirements and according to the specifications included for each item.

A. Replace Westside Wastewater Treatment Plant (WWTP) Influent Lift Station pumps (two pumps) and provide a new pump station control panel to replace the existing controls located inside the Motor Control Center (MCC) room.

B. Replace one pump (the older pump) at the Westside WWTP Equalization Basin and provide a new pump station control panel to replace the existing controls located inside the Motor Control Center (MCC) room. The new control panel shall control all three pumps at the equalization basin.

C. Repair/Replace the Eastside WWTP Sludge Holding Tanks Blower System

3.3. WESTSIDE WWTP INFLUENT LIFT STATION

A. The contractor shall furnish TWO (2) new submersible pumps complete and operational with all mechanical appurtenances including rail adaptors (if needed), any required piping, as well as all electrical and control equipment including wiring, and control panels.

B. Work shall include all labor, materials, equipment and incidentals necessary and required for the aeration system to be complete and operational as specified.

C. The new pumps shall fit the existing installed discharge elbows currently installed at the Lift Station’s wet well to service the existing pumps and are connected to the existing discharge piping.

1. If the contractor fails to find a pump that fits the existing discharge elbows during the submittal phase, the contractor shall submit such evidence to the COR and CO and request approval for exercising the option of purchasing new discharge elbows.

2. If the condition of the existing discharge elbows is do deteriorated that it will affect the performance of the new pumps, the contractor shall document the elbows condition and share that with the COR and CO and request approval for exercising the option of purchasing new discharge elbows.

D. Performance Requirements

1. The Westside Influent Lift Station pumps have the following criteria:

E. Unit Responsibility: The influent pumps, complete with motors, shafting, necessary adaptors or discharge elbows and all other accessories and appurtenances including the control panel/system shall be furnished by the pumps manufacturer to ensure compatibility and integrity of the individual components and provide the specified warranty for all components.

F. Qualifications and Quality Assurance

1. The influent pumps specified shall be the products of a reputable manufacturer who has been regularly engaged in the design, manufacture and furnishing of Wastewater Pumping Equipment for at least ten (10) years. The manufacturer shall have installed similar pumps, performing similar duty, for at least three (3) other installations in Mid Atlantic area. Each such installation shall have performed satisfactorily for at least five (5) years and be still in operation.

a. Pumps shall be engineered and manufactured under the certification of ISO-9001.

b. All manufacturer parts and components shall be engineered for long, continuous and uninterrupted service. Provisions shall be made for easy lubrication, adjustment, or replacement of all parts.

c. All stages of the manufacturing process shall be carefully inspected at the factory by manufacturer’s inspectors who shall use whatever means necessary to assure the proper fit of all field connections and compliance with all material and fabrication requirements of the specifications.

d. The pump station and control panel shall be factory wired and assembled. Assembly and wiring shall be to the point where the only field interconnections to numbered terminal blocks are required.

G. Factory and Performance Testing

1. The influent pumps shall be factory tested for sound component and optimum operation parameters including temperature, proper assembly, non-clog impeller and performance under operating conditions. The manufacturer shall provide factory testing results to the owner for verification. Performance testing shall also be administered onsite after installation; the manufacturer representative shall be available onsite for such testing with the appropriate equipment to measure required parameters and capabilities.

H. Pumps Requirements

1. General: The pumps shall be of a submersible type, complete with cables, lifting chains or cables. Each pump shall consist of a submersible electric motor directly coupled to an impeller. The impeller shall be housed in a replaceable stator assembly beneath the submersible motor.

2. Site Specific Requirements:

a. The new pumps shall perfectly fit the existing discharge elbows, or they shall be provided with their own discharge elbows. If new discharge elbows are provided, they must be made to fit within the existing piping system.

b. The new pumps shall also fit the existing rails for lowering and raising the pumps. If the existing rails don’t fit the new pumps, the new pumps shall be fitted with adaptors that fit the existing rails.

3. Impeller: Non-clog, non-fouling, high-efficiency impellers shall be used. The impeller body shall be constructed with stainless steel and hardening treatment for maximum strength, minimum corrosion, and maximum abrasion resistance. The impeller shall be dynamically balanced for minimum vibration and maintenance free operation. The non-clog feature of the impeller and its operation shall provide a free passage of solids up to 4” diameter and to have the ability to further chop/grind solids to further improve wastewater treatment.

4. Motor: The submersible pumps motor shall be explosion proof built to U.L. standards for use in Class I Groups C & D hazardous locations. The motor shall have a cast iron housing coated with epoxy paint to withstand corrosion in the wastewater/sludge environment, a 416 stainless steel motor shaft, oil-filled chamber with double mechanical seals, a seal minder (moisture detector), and thermal overload protection. The outer seal shall be constructed from a silicon carbide and withstand pressures up to 20 bar g. The outer seal shall have no exposed spring or seal faces on which debris may collect and be designed for use in applications involving extreme solids and grit. Each motor shall have thirty-five (35) feet of submersible power cable attached at the factory. The cable entry seal shall be watertight and submersible. The motor shall incorporate a sensor to detect water leakage through the outer seal. A separate electrical lead from the motor shall provide a signal from the leakage sensor to the control panel.

5. Spare Parts: The manufacturer shall submit recommended spare parts as part of the shop drawings and provide such parts as part of the supply.

I. Influent Pump Station Control Strategy and Sequence of Operation

1. The system shall be controlled in either automatic or manual mode including manual starting, stopping and system shut down when a fault is detected.

2. Manual operations of the influent pump station is rarely used and is only provided to be used during emergencies and faulty equipment conditions.

3. Automatic operation of the Influent Lift Station is the standard mode of operation which shall govern the design/construction of the control system.

4. The pump station control strategy is as follows and it works with the existing float system installed at the wet well.

a. The contractor shall service the existing float system to render it operational free of defects and operational as its design intended.

b. The Influent Pumping Station control consists of float switches that start and stop the pumps. The lead pump will start when the wet well elevation reaches 109.81 and the lag pump will start when the wet well elevation reaches 110.31.

c. Both the lead and lag pumps will continue to nm until the wet well elevation is reduced to 107.56.

d. High and low water alarms are provided at 110.81 and 107.06 respectively. Do not attempt to operate the submersible pumps below the low water level as they may overheat.

e. Average daily influent flow is 140 gpm (0.20 MGD) and a peak flow of 530 gpm (0.76 MGD). Either pump has sufficient capacity to handle both the daily and peak flowrates.

f. When flows are close to average flow, longer retention times occur in the wet well until the pump on elevations are reached.

J. Influent Pump Station Control System

1. The Contractor shall provide one control panel designed to work according to above noted control strategy and sequence of operation.

a. As noted above, the control panel shall be provided by or pumps manufacturer to maintain unit responsibility.

b. The control panel shall be installed in the existing electrical room on the wall opposite the existing MCC.

c. The contractor shall make all necessary provisions and changes in the electrical room to install the panel, connect it with power and controls as appropriate for seamless operations.

2. Control Panel

a. One (1) control panel shall be furnished, completely pre-wired and tested.

b. The control panel shall adhere to the following specifications:

c. The Control panel shall contain all timers, switches, indicator lights, and other components necessary to operate the influent lift station

d. The control panel shall be supplied with applicable control relays and time delay relays with a minimum one extra normally closed and one extra normally opened contact is provided for each relay.

e. At this facility, remote monitoring is currently limited, but it will be expanded soon, accordingly, the panel shall be provided with Form C contacts for all dry contacts necessary. Remote monitoring and control shall include monitoring the influent pump station run status, run hours, remote starting and stopping and automatic operations based on level and timer.

f. The motor starter shall be NEMA rated size 1 minimum with adjustable solid-state overload protection

g. The control panel operator device shall be rated 4X, heavy duty, 30.5 mm, lights to be LED Push-to-Test type.

h. The panel door layout shall include the following items:

i. Front panel mounted main disconnect switch

ii. Motor circuit breaker

iii. Back lit Power Maintained 2-way switch

iv. System three position HOA switch for each pump

v. System Emergency Stop push button for each pump

vi. System Alarm Reset push button for each pump

vii. Pump running light

viii. Pump failure indicating light

ix. Aerator manual START push button

x. Aerator manual STOP push button

xi. An HMI monitoring/control screen shall be used to provide all pumps, motors, panels, and appurtenances conditions along with alarms, interlocks or other critical for display data.

K. Influent Pump Station Installation Requirements

1. As is known, the wastewater treatment plant can’t go out of service during this installation, as such, the contractor shall provide for isolation and bypass pumping as follows:

a. To protect the USDA facility personnel and the contractor team working on the project, the contractor shall provide full isolation of the lift station wet well from the manhole or manholes upstream the wet well.

i. Isolation shall be through plugs or any other means for tight flow isolation from entering the wet well.

ii. The contractor shall put in place a mechanism to continuously check on the condition of the isolation structure(s) to ensure personnel safety.

b. All flow intercepted at the manhole or manholes upstream the wet well shall be pumped directly to the plant location where it is currently being pumped (equalization basin or directly to the treatment units).

c. Bypass pumping shall continue until the Influent Lift station and its control system are fully operational.

d. Isolation and bypass pumping plans shall be submitted for review by the Owner.

3.4. WESTSIDE WWTP EQUALIZATION BASIN PUMP STATION

A. Background: the Equalization Basin Pump Station consists of three (3) submersible pumps, two of which were recently replaced.

B. The contractor shall furnish ONE (1) new submersible pump complete and operational with all mechanical appurtenances including adaptors, discharge elbows, guide rails (if necessary), any required piping, as well as all electrical and control equipment including wiring, and control panels.

C. The new pump shall match the existing two new pumps which were installed in 2025 and which details are provided below and in the Contract Attachments.

D. Work shall include all labor, materials, equipment and incidentals necessary and required for the aeration system to be complete and operational as specified.

E. Performance Requirements

1. The Westside Equalization Basin Pump Station pumps have the following criteria:

F. Unit Responsibility: The Equalization Basin pump, complete with motors, shafting, necessary adaptors or discharge elbows and all other accessories and appurtenances including the control panel/system shall be furnished by the pumps manufacturer to ensure compatibility and integrity of the individual components and provide the specified warranty for all components.

G. Qualifications and Quality Assurance

1. The equalization basin pumps specified shall be the products of a reputable manufacturer who has been regularly engaged in the design, manufacture and furnishing of Wastewater Pumping Equipment for at least ten (10) years. The manufacturer should have installed similar pumps, performing similar duty, for at least three (3) other installations in Mid Atlantic area. Each such installation shall have performed satisfactorily for at least five (5) years and be still in operation.

a. Pumps shall be engineered and manufactured under the certification of ISO-9001.

b. All manufacturer parts and components shall be engineered for long, continuous and uninterrupted service. Provisions shall be made for easy lubrication, adjustment, or replacement of all parts.

c. All stages of the manufacturing process shall be carefully inspected at the factory by manufacturer’s inspectors who shall use whatever means necessary to assure the proper fit of all field connections and compliance with all material and fabrication requirements of the specifications.

d. The pump station and control panel shall be factory wired and assembled. Assembly and wiring shall be to the point where the only field interconnections to be made are the numbered terminal blocks are required.

H. Factory and Performance Testing

1. The equalization basin pumps shall be factory tested for sound component and optimum operation parameters including temperature, proper assembly, non-clog impeller and performance under operating conditions. The manufacturer shall provide factory testing results to the owner for verification. Performance testing shall also be administered onsite after installation; the manufacturer representative shall be available onsite for such testing with the appropriate equipment to measure required parameters and capabilities.

I. Pumps Requirements

1. General: The pumps shall be of a submersible type, complete with cables, lifting chains or cables. Each pump shall consist of a submersible electric motor directly coupled to an impeller. The impeller shall be housed in a replaceable stator assembly beneath the submersible motor.

2. Site Specific Requirements:

a. The new pumps shall perfectly fit the existing discharge elbows, or they shall be provided with their own discharge elbows. If new discharge elbows are provided, they must be made to fit within the existing discharge piping system.

b. The new pumps shall also fit the existing rails for lowering and raising the pumps. If the existing rails don’t fit the new pumps, the new pumps shall be fitted with adaptors that fit the existing rails.

3. Impeller: Non-clog, non-fouling, high-efficiency impellers shall be used. The impeller body shall be constructed with stainless steel and hardening treatment for maximum strength, minimum corrosion, and maximum abrasion resistance. The impeller shall be dynamically balanced for minimum vibration and maintenance free operation. The non-clog feature of the impeller and its operation shall provide a free passage of solids up to 2” diameter and to have the ability to further chop/grind solids to further improve wastewater treatment.

4. Motor: The submersible pumps motor shall be explosion proof built to U.L. standards for use in Class I Groups C & D hazardous locations. The motor shall have a cast iron housing coated with epoxy paint to withstand corrosion in the wastewater/sludge environment, a 416 stainless steel motor shaft, oil-filled chamber with double mechanical seals, a seal minder (moisture detector), and thermal overload protection. The outer seal shall be constructed from a silicon carbide and withstand pressures up to 20 bar g. The outer seal shall have no exposed spring or seal faces on which debris may collect and be designed for use in applications involving extreme solids and grit. Each motor shall have thirty-five (35) feet of submersible power cable attached at the factory. The cable entry seal shall be watertight and submersible. The motor shall incorporate a sensor to detect water leakage through the outer seal. A separate electrical lead from the motor shall provide a signal from the leakage sensor to the control panel.

5. Spare Parts: The manufacturer shall submit recommended spare parts as part of the shop drawings and provide such parts as part of the supply.

J. Equalization Basin Pump Station Control Strategy and Sequence of Operation

1. The system shall be controlled in either automatic or manual mode including manual starting, stopping and system shut down when a fault is detected.

2. Manual operation of the Equalization Basin Pump Station is rarely used and is only provided to be used during emergencies and in faulty equipment conditions.

3. Automatic operation of the Equalization Basin Pump Station is the standard mode of operation which shall govern the design/construction of the control system.

4. The pump station control strategy is as follows and it works with the existing float system installed at the wet well

a. The contractor shall service the existing float system to render it operational free of defects and operational as its design intended.

b. Flow Equalization Pump control system consists of mercury float switches that start and stop the pumps.

c. Normal operation procedure would consist of two pumps in service with the third pump being on standby. The two in-service pumps are dedicated each to one of the two Wastewater Treatment Units.

d. Pumps will start when the elevation reaches 121.98 and will pump until the elevation drops to 120.98.

K. Equalization Basin Pump Station Control System

1. The Contractor shall provide one control panel designed to work according to above noted control strategy and sequence of operation.

a. As noted above, the control panel shall be provided by the manufacturer to maintain unit responsibility.

b. The control panel shall be installed in the existing electrical room on the wall opposite the existing MCC.

c. The contractor shall make all necessary provisions and changes in the electrical room to install the panel, connect it with power and controls as appropriate for seamless operations.

2. Control Panel

a. One (1) control panel shall be furnished, completely pre-wired and tested.

b. The control panel shall adhere to the following specifications:

c. The Control panel shall contain all timers, switches, indicator lights, and other components necessary to operate the influent lift station

d. The control panel shall be supplied with applicable control relays and time delay relays with a minimum one extra normally closed and one extra normally opened contact is provided for each relay.

e. At this facility, remote monitoring is currently limited, but it will be expanded soon, accordingly, the panel shall be provided with Form C contacts for all dry contacts necessary. Remote monitoring and control shall include monitoring the influent pump station run status, run hours, remote starting and stopping and automatic operations based on level and timer.

f. The motor starter shall be NEMA rated size 1 minimum with adjustable solid-state overload protection

g. The control panel operator device shall be rated 4X, heavy duty, 30.5 mm, lights to be LED Push-to-Test type.

h. The panel door layout shall include the following items:

i. Front panel mounted main disconnect switch

ii. Motor circuit breaker

iii. Back lit Power Maintained 2-way switch

iv. System three position HOA switch for each pump

v. System Emergency Stop push button for each pump

vi. System Alarm Reset push button for each pump

vii. Pump running light

viii. Pump failure indicating light

ix. Aerator manual START push button

x. Aerator manual STOP push button

xi. An HMI monitoring/control screen shall be used to provide all pumps, motors, panels, and appurtenances conditions along with alarms, interlocks or other critical for display data.

L. Equalization Basin Pump Station Installation Requirements

1. The Equalization Basin Pump Station has been out for some time. This extended outage might have affected other components of the pump station including disconnect boxes, control valves and isolation valves.

a. During the installation of the pump and the control system, the Contractor shall test and verify the safety and operational condition of all three pumps disconnect boxes.

i. If any box needs minor maintenance, the contractor shall provide such repair/maintenance as part of the contract.

ii. If any or all boxes need to be replaced, there is an item in the Contract Options that provides for new disconnect boxes.

b. After the installation of the pump and the major electrical and control equipment, the pump station shall be tested. Testing of the pump station will require operating all three (3) check valves and 5 isolation valves.

i. If any of the valves require minor maintenance, the contractor shall provide such repair/maintenance as part of the contract.

ii. If any of the valves need to be replaced, there is an item in the Contract Option that provides for new isolation and check valves for this pump station.

3.5. WESTSIDE GENERAL ELECTRICAL/CONTROLS WORK REQUIRED FOR INFLUENT & EQUALIZATION BASIN PUMP STATIONS NEW CONTROLS A. General outlines of controls work described in details above for new control panels for the influent and equalization basin pump stations include:

1. Install new control panels for the equalization basin and influent pump stations.

2. Assess the compatibility of existing sensors/float systems with new control devices.

a. This work shall be performed prior to ordering the control panels.

b. The existing float systems shall be fully checked and serviced for operational and control integrity

3. Replace incompatible sensors/floats as needed.

4. Perform commissioning and testing of the new control system, ensuring seamless integration with the MCC.

B. In order to install the new control panels inside the electrical room, some electrical work needs to be performed. This work shall include, but is not limited to

1. Identify and label existing electrical and control wires entering and exiting the MCC and the pump stations.

2. Reroute identified wires to a new junction box for connection to the new control panels.

3. This plant may undergo a full electrical/controls overhaul, as such, the Contractor shall connect the rerouted wires to the new control boxes/panels in a way that is manageable and in preparation for this overhaul.

3.6. EASTSIDE WWTP SLUDGE HOLDING TANKS BLOWER SYSTEM

A. Background: The Eastside WWTP has two sludge holding tanks operating as aerobic digesters. These digesters are aerated through four (4) blowers. Two of the four blowers are currently working with the other two not working.

B. The contractor shall remove the two nonoperational blowers, move them to his facility and perform a full condition evaluation.

1. If the two blowers are repairable/maintainable, the Contractor shall maintain/repair or rebuild these two blowers to a full working condition before returning them to the site for reinstallation.

2. If one or both two blowers are not repairable or their repair cost is unfeasible compared to replacing the blowers, the contractor shall provide such documentation to the COR and CO to exercise the Option that deals with purchase of new blowers.

3. After repair or replacement of the two blowers, both blowers shall be returned to the site and reinstalled.

4. The Contractor shall test each blower pressure relief valve and replace it if the valve is not operational. In total, the Contractor shall provide 4 pressure relief valves with the valve which were not installed provided to the COR as part of the spare part inventory C. After the installation of the two repaired/replaced blowers, the Contractor shall test the entire system operations interchanging different blowers for different tanks until each blower, valve, pressure relief valve, isolation valve, … etc. is tested. Any defective components in the system shall be documented and submitted to the COR and CO.

D. After testing the entire system, the two operational blowers shall be turned off with the tow repaired/replaced blowers operating. The other two blowers shall be removed by the Contractor to his facility for testing, maintenance and rebuilding as appropriate.

1. At the completion of the rebuilding and/or maintenance, the two blowers shall be brough back to the site and reinstalled.

E. Repaired or new blowers shall be connected back to the same electrical and controls system that controlled the existing blowers.

F. Blowers Performance Requirements

1. The Eastside Sludge Holding Tank Blowers were designed and installed so that each blower is constructed for continuous duty under the following conditions:

2. EXPECTED PERFORMANCE: The sludge holding facility is designed to store a maximum volume of 360,000 gallons of sludge. The aeration system for each storage tank is capable of distributing compressed air uniformly to the contents of the tank to a degree adequate to keep solids in suspension, and to prevent the formation of anoxic zones within the tank.

3. DESCRIPTION OF SYSTEM COMPONENTS: The sludge holding facilities consists of two (2) above-ground steel glass lined 180,000-gallon storage tanks. Each tank is provided with two positive displacement aeration blowers, each rated at 485 scfm at 9.5 psi. The blowers aerate 20 cfm/1000 ft3 of tank volume. The storage tanks are glass-coated to resist the corrosive effects of the activated sludge.

G. Unit Responsibility: All work on blowers whether it is repair, maintenance, rebuilding or providing new blowers shall be provided by one entity directly responsible under the general contractor and specialized in blowers..

H. Qualifications and Quality Assurance

1. New blowers, if provided, as specified shall be the products of a reputable manufacturer who has been regularly engaged in the design, manufacture and furnishing of Blower Equipment for at least ten (10) years.

a. Blowers shall be engineered and manufactured under the certification of ISO-9001.

b. All manufacturer parts and components shall be engineered for long, continuous and uninterrupted service. Provisions shall be made for easy lubrication, adjustment, or replacement of all parts.

c. All stages of the manufacturing process shall be carefully inspected at the factory by manufacturer’s inspectors who shall use whatever means necessary to assure the proper fit of all field connections and compliance with all material and fabrication requirements of the specifications.

I. Factory and Performance Testing

1. The new blowers shall be factory tested for sound component and optimum operation parameters including temperature, proper assembly, and performance under operating conditions. The manufacturer shall provide factory testing results to the owner for verification. Performance testing shall also be administered onsite after installation; the manufacturer representative shall be available onsite for such testing with the appropriate equipment to measure required parameters and capabilities.

4. DIFFERNING SITE CONDITIONS

4.1. GENERAL REQUIREMENTS

A. All items in this section of are items with unforeseen issues or unknown status. The contract provides for inspection, repair and rebuilding of these items, but due to the age and condition of any of these items, if any can’t be repaired, it shall be replaced. The contractor shall follow the procedures listed in FAR 52.236-2, Differing Site Condition.

4.2. WESTSIDE WWTP INFLUENT LIFT STATION DISCHARGE ELBOW

A. The Westside WWTP Influent Lift Station has existing discharge piping installed including the two discharge elbows that fit the old pumps. The specified pumps are required to fit the existing discharge elbows B. If the condition of the existing discharge elbows is so deteriorated or if the contractor could not find a pump with the exact required specification that fits the existing discharge elbows, the contractor shall follow the procedures in FAR 52.236-2, Differing Site Conditions.

4.3. WESTSIDE WWTP PUMP/LIFT STATIONS ELECTRICAL JUNCTION AND DISCONNECT BOXES

C. At the Westside WWTP and for the improvements of the Influent Lift Station and Equalization Basin Pump Station, and the installation of their new control system and control panels, a need may arise to replace any of the existing 5 disconnect boxes (two for the Influent Lift Station and three for the Equalization Basin Pumps Station). If any of the boxes require replacement, the contractor shall follow the procedures in FAR 52.236-2, Differing Site Conditions.

4.4. WESTSIDE WWTP EQUALIZATION BASIN PUMP STATION VALVES

A. The Westside WWTP Equalization Basin Pump Station discharge piping is configured so that two of the pumps are each dedicated to feed one treatment unit with the third pump to work as a standby pump supporting or operating on behalf of any of the two other pumps.

B. This configuration warranted the installation of three check valves (one for each pump) and 5 isolation valves (one for each pump in addition to two isolation valves to support the redundancy of the third pump. If any of the valves require replacement, the contractor shall follow the procedures in FAR 52.236.2, Differing Site Conditions.

4.5. EASTSIDE WWTP SLUDGE HOLDING TANKS BLOWERS (NEW BLOWERS)

A. The Eastside WWTP Sludge Holding Tanks Blowers are specified in the base contract to be repaired, maintained or rebuilt.

B. If any of the four blowers isn’t repairable/maintainable or it can’t be rebuilt, then it shall be replaced with a new blowers with the same specification and criteria noted above within the Base Contract. If any of the blowers are inoperable, the contractor shall follow the procedures in FAR 52.236-2, Differing Site Conditions.

5. PROJECT CONDITIONS AND SPECIFICATIONS

5.1. PROJECT COORDINATION

C. Communications

1. All communications shall be through the Project Contracting Officer (CO) and the Project Contracting Officer Representative (COR)

2. Acceptable forms of communications include Emails, Letters, and Telephone Memoranda D. Project Schedule

1. Within a week of project award, the contractor shall submit project schedule following the Milestones below:

a. Shop drawings submittal within 2 weeks

b. Equipment delivery within 8 weeks

c. Installation, certification of installation and owner’s training within 10 weeks E. Progress Meetings & Reporting

1. A Progress Report shall be submitted to BARC Representatives monthly and/or with each billing cycle/invoice.

2. A Progress Meeting shall be held with BARC Representatives at every Project Milestone F. Quality Requirements

1. Quality procedures outlined on the project specifications plan shall be followed and records submitted to BARC Representatives with every milestone.

G. Change Management

1. No changes to the scope of work will be accepted without a written approval of BARC Representatives H. Project Resource Management

1. Changes to project team personnel shall be approved in advance by BARC Representatives