5/15/2026

5/15/2026

05-15-2026 00 01 10-1 SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

TABLE OF CONTENTS

DIVISION 00

Section Title

Standard Front-End Bidding Documents

Town of Leesburg – General Conditions

Town of Leesburg – Supplementary Conditions

00 01 10 Table of Contents

DIVISION 01 − GENERAL REQUIREMENTS

Section Title

01 11 00 Summary of Work

01 14 00 Coordination with Owner's Operations

01 20 00 Measurement and Payment

01 25 00 Substitution Procedures

01 26 00 Contract Modification Procedures

01 29 73 Schedule of Values

01 29 76 Progress Payment Procedures

01 31 19 Project Meetings

01 32 00 Construction Progress Schedule

01 33 00 Submittal Procedures

01 35 20 Confined Space Entry Plan

01 42 00 References

01 45 23 Testing Services Furnished by Contractor

01 45 33 Special Inspections

01 51 00 Temporary Utilities

01 52 00 Construction Facilities

01 55 00 Contractor Access and Parking

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Section Title

01 55 26 Traffic Control

01 57 00 Temporary Controls

01 61 00 Product Requirements and Options

01 65 00 Product Delivery Requirements

01 66 00 Product Storage and Protection Requirements

01 71 23 Field Engineering

01 71 33 Protection of Work and Property

01 73 00 Demolition and Execution of Work

01 73 23 Anchorage and Bracing of Nonstructural Components

01 74 00 Cleaning and Waste Management

01 75 00 Checkout and Startup Procedures

01 77 19 Closeout Requirements

01 78 23 Operation and Maintenance Data

01 78 39 Project Record Documents

01 78 43 Spare Parts and Extra Material

01 79 00 Instruction of Owner’s Personnel

01 88 16 Watertightness Testing of Concrete Structures

DIVISION 02 − EXISTING CONDITIONS

Section Title

02 41 00 Site Demolition

DIVISION 03 − CONCRETE

Section Title

03 01 30 Concrete Repairs

03 11 00 Concrete Formwork

03 15 00 Concrete Accessories

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03 15 16 Joints in Concrete

03 21 00 Reinforcing Steel

03 23 00 Stressing Tendons

03 30 00 Cast-in-Place Concrete

03 35 00 Concrete Finishes

03 39 00 Concrete Curing

03 40 00 Precast Concrete

03 41 13 Precast Prestressed Concrete Hollow Core Planks

03 60 00 Grout

DIVISION 04 − MASONRY

Section Title

04 01 20 Masonry and Stone Work Restoration and Cleaning

04 05 13 Mortar and Masonry Grout

04 05 23 Masonry Accessories

04 20 00 Unit Masonry

04 43 00 Cast Stone

DIVISION 05 − METALS

Section Title

05 05 13 Galvanizing

05 05 23 Metal Fastening

05 10 00 Metal Materials

05 12 00 Structural Steel

05 13 00 Stainless Steel

05 21 00 Steel Joists

05 31 00 Metal Decking

05 40 00 Cold-Formed Metal Framing

05 50 00 Metal Fabrications

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05 51 00 Metal Stairs

05 51 33 Ladders

05 52 00 Guards and Railings

05 53 00 Gratings, Checkered Floor Plates, and Access Doors

05 55 00 Stair Treads and Nosings

05 56 00 Castings

05 59 00 Bearing Devices and Anchoring

DIVISION 06 – WOOD, PLASTICS, AND COMPOSITES

Section Title

06 10 00 Rough Carpentry

06 51 00 Glass Fiber and Resin Fabrications

DIVISION 07 − THERMAL AND MOISTURE PROTECTION

Section Title

07 11 00 Dampproofing

07 13 50 Waterproofing

07 18 13 Pedestrian Traffic Coating

07 21 00 Building Insulation

07 26 16 Vapor Barrier

07 52 00 Built-up Bituminous Roofing

07 60 00 Flashing and Sheet Metal

07 70 00 Roof Specialties and Accessories

07 84 00 Firestopping

07 90 00 Joint Fillers, Sealants and Caulking

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DIVISION 08 − OPENINGS

Section Title

08 11 13 Steel Doors and Frames

08 33 23 Roll-Up Doors

08 45 23 Translucent Wall Assemblies

08 71 00 Finish Hardware

08 80 00 Glass and Glazing

08 90 00 Louvers and Dampers

DIVISION 09 − FINISHES

Section Title

09 90 00 Painting

09 96 59 Epoxy MIC Coating Systems

DIVISION 10 − SPECIALTIES

Section Title

10 14 00 Identifying Devices

10 43 16 First Aid Cabinets

10 44 16 Fire Extinguishers

DIVISION 13 − SPECIAL CONSTRUCTION

Section Title

13 33 12 Aluminum Flat Covers

DIVISION 22 − PLUMBING

Section Title

22 05 00 Basic Plumbing Requirements

22 05 29 Hangers and Supports for Plumbing Piping and Equipment

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Section Title

22 05 53 Identification for Plumbing Piping and Equipment

22 07 19 Plumbing Piping Insulation

22 11 13 Facility Water Distribution Piping

22 11 19 Domestic Water Piping Specialties

22 13 16 Sanitary Waste and Vent Piping

22 14 13 Facility Storm Drainage

22 14 29 Sump Pumps

22 33 00 Electric Domestic Water Heaters

DIVISION 23 − HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

Section Title

23 00 00 Basic HVAC Requirements

23 05 93 HVAC Balancing

23 05 95 HVAC Field Testing

23 07 00 HVAC Insulation

23 09 02 HVAC Automatic Temperature Controls (BMS Logic)

23 09 13.33 Control Valves

23 21 13 Hydronic Piping

23 21 15 Hydronic Specialties

23 23 00 Refrigerant Piping

23 31 13 Metal Ducts and Duct Accessories

23 34 00 HVAC Fans

23 74 00 Packaged Outdoor HVAC Equipment

23 74 01 Commercial Make-Up Air Units

23 74 05 Positive Pressurization Units

23 75 00 Custom-Packaged HVAC Equipment

23 81 26 Split-System Air Conditioners

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Section Title

23 82 16.14 Electric-Resistance Air Coils

DIVISION 26 − ELECTRICAL

Section Title

26 05 00 Basic Electrical Requirements

26 05 13 Medium Voltage Cables

26 05 19 Low-Voltage Conductors and Cables

26 05 26 Grounding and Bonding for Electrical Systems

26 05 29 Hangers and Supports for Electrical Systems

26 05 33.13 Conduit for Electrical Systems

26 05 33.16 Boxes for Electrical Systems

26 05 53 Identification for Electrical Systems

26 05 60 Low-Voltage Electric Motors

26 09 16 Electric Controls and Relays

26 12 19 Pad-Mounted, Liquid-Filled, Medium-Voltage Transformers

26 22 00 Low-Voltage Transformers

26 23 00 Low Voltage Switchgear

26 24 16 Panelboards

26 24 19 Low-Voltage Motor Control Centers

26 27 26 Wiring Devices

26 28 16.16 Enclosed Switches

26 29 13.13 Low-Voltage Enclosed Motor Controllers - Full Voltage

26 29 23 Low-Voltage Variable Frequency Motor Controllers

26 36 23 Automatic Transfer Switches

26 41 00 Facility Lightning Protection

26 43 13 Surge Protection Devices

26 50 00 Lighting

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DIVISION 28 − ELECTRONIC SAFETY AND SECURITY

Section Title

28 46 20 Fire Alarm Systems

DIVISION 31 − EARTHWORK

Section Title

31 00 01 Earthwork

31 05 16 Aggregate Materials

31 05 19 Geotextiles

31 10 00 Clearing, Grubbing, and Site Preparation

31 23 24 Flowable Fill

31 25 00 Erosion and Sedimentation Control

DIVISION 32 − EXTERIOR IMPROVEMENTS

Section Title

32 10 00 Paving and Surfacing

32 11 00 Surface Restoration

32 31 13 Steel Fencing

32 90 00 Final Grading and Landscaping

DIVISION 33 − UTILITIES

Section Title

33 05 61 Utility Structures

33 24 00 Storm Drains and Roof Drains

33 44 49 Hydrodynamic Separators

33 71 19 Underground Electrical

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DIVISION 40 − PROCESS INTERCONNECTIONS

Section Title

40 05 00 Basic Mechanical Requirements

40 05 07 Pipe Supports

40 05 19 Ductile Iron Pipe

40 05 24.33 Stainless Steel Piping

40 05 31 PVC/ CPVC Pipe

40 05 31.43 Polypropylene Pipe

40 05 33 High Density Polyethylene (HDPE) Pipe

40 05 36.13 FRP Ductwork for Odor Control Service

40 05 41 Piping Expansion Compensation for Liquid Service

40 05 51 Valves, General

40 05 57 Valve Operators and Electric Valve Actuators

40 05 58 Gate Operators and Electric Gate Actuators

40 05 59 Stop Plates and Stop logs

40 05 59.23 Fabricated Stainless Steel Slide Gates

40 05 61 Gate Valves (Including Knife Gate Valves)

40 05 62 Plug Valves

40 05 63 Ball Valves

40 05 64 Butterfly Valves

40 05 65.23 Check Valves

40 05 68.13 PVC and CPVC Valves

40 05 68.23 Miscellaneous Valves

40 05 78 Air Valves for Wastewater Service

40 05 81 Yard Hydrants

40 05 97 Piping and Equipment Identification Systems

40 06 20 Process Pipe, Valve, and Gate Schedules

40 41 13 Heat Tracing Systems

40 42 13 Insulation

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Section Title

40 61 13 Process Control System General Provisions

40 61 15 Process Control System Submittals

40 61 21 Process Control System Testing

40 61 21.71 Factory Witness Test

40 61 21.72 Field Testing

40 61 21.73 Final Acceptance Test

40 61 22 Tools, Supplies, and Spare Parts, General

40 61 23 Signal Coordination Requirements

40 61 24 Quality Assurance

40 61 26 Process Control System Training

40 61 90 Schedules and Control Descriptions, General

40 61 91 Process Control Systems Instrument List

40 61 93 Process Control System Input/Output List

40 61 96 Process Control Descriptions

40 62 00 Computer System Hardware and Ancillaries

40 62 63 Operator Interface Terminals (OIT)

40 63 43 Programmable Logic Controllers

40 66 00 Network and Communication Equipment

40 67 00 Control System Equipment Panels and Racks

40 67 63 Uninterruptible Power Systems

40 68 00.13 Process Control Software (Modify)

40 70 00 Instrumentation for Process Systems

40 71 13.13 Inline Magnetic Flow Meters

40 71 76 Thermal Mass Flow Meters

40 72 23 Radar Level Meters

40 72 76.26 Level Switches (Floats)

40 73 13 Pressure and Differential Pressure Gauges

40 73 20 Pressure Transmitters

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Section Title

40 73 36 Pressure and Differential Pressure Switches

40 74 13 Resistance Temperature Devices

40 74 63 Temperature Transmitters

40 74 66 Temperature Switches

40 76 21 Single Point Gas Monitoring Systems

40 78 00 Panel Mounted Instruments

40 78 56 Isolators, Intrinsically-Safe Barriers, and Surge Suppressors

40 78 59 Power Supplies

40 79 00 Miscellaneous Instruments, Valves, and Fittings

DIVISION 41 − MATERIAL PROCESSING AND HANDLING EQUIPMENT

Section Title

41 22 00 Cranes and Hoists

DIVISION 42 − PROCESS HEATING, COOLING AND DRYING EQUIPMENT

Section Title

42 52 23 Process Boiler System

DIVISION 43 − PROCESS GAS AND LIQUID HANDLING, PURIFICATION, AND STORAGE

EQUIPMENT

Section Title

43 20 00 Pumps-General

43 20 00.01 Pump Field Testing Schedule

43 23 19 Horizontal Centrifugal Chopper Pumps

43 21 31 Vertical Recirculating Chopper Pumps

43 23 57 Progressing Cavity Pumps

43 23 58 Rotary Lobe Pumps

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DIVISION 46 − WATER AND WASTEWATER EQUIPMENT

Section Title

46 00 00 Equipment General Provisions

46 21 74 Sludge Screen Equipment

46 24 23 In-Line Grinders

46 43 21.23 Circular Gravity Thickener Equipment

46 51 18 Submersible Mixers

46 73 10 Digester Cleaning and Startup

46 73 11 Fixed Digester Cover

46 73 19 Digester Gas Safety and Control Equipment

46 73 20 Waste Gas Flare System

46 73 36 Pumped Mixing Systems

46 73 40 Sludge Heat Exchangers (Spiral)

46 76 33 Thickening Centrifuge Equipment

46 77 20 Liquid Polymer Preparation Systems

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IMPROVEMENTS – PHASE I

SECTION 01 11 00

SUMMARY OF WORK

PART 1 – GENERAL

1.01 SUMMARY

A. Section includes:

1. Summary

2. Location and Description of Work

3. Construction Contracts, This Project

4. Construction Contracts, Other Projects

5. Work by Others

6. Work by Owner

7. Owner Furnished Equipment and Materials

8. Owner Assigned Procurement Contracts

9. Sequence and Progress of Work

10. Contractor’s Use of Site

11. Easements and Rights-of-Way

12. Notices to Owners and Authorities of Properties Adjacent to the Work

13. Salvage of Equipment and Materials

14. Partial Utilization by Owner

1.02 LOCATION AND DESCRIPTION OF WORK

A. The Work is located at the following Site:

1. Town of Leesburg Water Pollution Control Facility (WPCF)

1391 Russell Branch Parkway SE, Leesburg, VA 20175

B. The Work to be performed under this Contract includes, but is not limited to, constructing the Work described below and all appurtenances related to the Work. The Work shall be as follows:

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1. Primary Sludge Pumping Station 1 Improvements

2. Primary Sludge Pumping Station 2 Improvements

3. Gravity Thickeners A-C Construction

4. Thickened Sludge Pumping Station Construction

5. Solids Electrical Building (SEB) Construction

6. Existing Gravity Thickeners A and B Demolition

7. Anaerobic Digestion Improvements

8. Digested Sludge Storage Tank Improvements

9. General Site, Electrical, Instrumentation/Controls Improvements

1.03 CONSTRUCTION CONTRACTS, THIS PROJECT

A. The Contracts under which the Project will be constructed are:

1. Work specified in Divisions 01 through 46 (inclusive) of the Specifications.

2. Work shown on sheets 1 through 342 (inclusive) of the Solids Processing

Improvements Phase 1 Drawings (Package A).

3. Work shown on sheets G-000 through C-204 (inclusive) of the DSST B

Replacement Drawings (Package B).

1.04 CONSTRUCTION CONTRACTS, OTHER PROJECTS

A. WPCF SCADA System Improvements – occurring concurrently with SPI-1 work

1.05 WORK BY OTHERS

A. Outside this Contract, the Owner has selected MC Dean as their programmer for all plant programmable logic controllers, operator interface terminals outside of vendor provided equipment, and for the development of SCADA interfaces (including graphical objects, reporting, trends and alarms) for the Solids Processing Improvements – Phase I

Design. It is anticipated that the work of the Programmer will generally include, but is not limited to, the following items of work associated with integration of the Leesburg WPCF:

1. Attend construction meetings, I&C Coordination and Progress Meetings

2. Provide SCADA equipment and workstations (servers, computers, large displays, uninterruptible power supplies)

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3. Provide SCADA network components and accessories (network switches, firewalls, routers) outside the General Contractor’s work

4. Provide programming of existing VT-SCADA system for the monitoring of all process equipment real-values, status and alarms.

a. Development and configuration of SCADA server;

b. Development and configuration of historical data logging into historian server;

c. Provide programming of alarm software;

5. Provide Network programming and configuration;

a. Configure the process network addresses, IP addresses and Subnet mask to match the addresses determined by the Owner or Town IT

6. Provide PLC programming and OIT development for the monitoring of all process equipment real-values, status and alarms, inclusive of:

a. ACP-38 (PLC & OIT)

b. ACP-33 (OIT)

c. LCP-33-135 (PLC & OIT)

7. Assist System Integrator with field tests and site acceptance tests (SAT) on all

PLC I/O points (analog, discrete, networked, etc.) from within the PLC/RIO panels to SCADA system, at the project site

B. Other Third Party Vendor(s) for SCADA Integration

1.06 WORK BY OWNER

A. Owner will perform the following in connection with the Work: Operate all existing valves, gates, pumps, equipment, and appurtenances that will affect Owner’s operation, unless otherwise specified or indicated.

1.07 OWNER-FURNISHED EQUIPMENT AND MATERIALS

A. Items of equipment and material to be furnished by Owner:

1. None

B. Owner’s Responsibilities:

1. Owner shall cease operation and shut down equipment upon notification from

Contractor that Contractor is ready to proceed with the work.

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C. Contractor’s Responsibilities:

1. Coordinate with Owner and Engineer prior to removal of equipment or processes from service. Contractor, Owner and Engineer shall be present to document and concur on functional operation prior to removal from service.

2. Remove equipment and material from service during scheduled shutdown.

3. Clean, transport, store, and protect equipment and material prior to relocation.

4. Perform field calibration, if necessary, and operational verification following installation of equipment and material.

5. Dewater all sludge as necessary from tanks removed from service and hall off-site to an acceptable disposal facility.

1.08 OWNER ASSIGNED PROCUREMENT DOCUMENTS

A. Items of equipment and material procured for assignment:

1. None

1.09 SEQUENCE AND PROGRESS OF WORK

A. Requirements for sequencing and coordinating with Owner’s operations, including maintenance of plant operations during construction, and requirements for tie-ins and shutdowns, are in Section 01 14 00 − Coordination with Owner’s Operations.

1.10 CONTRACTOR’S USE OF SITE

A. Contractors’ use of the Site shall be confined to the areas shown. Contractors shall share use of the Site with other contractors and others specified in this Section.

B. Contractor shall move stored products that interfere with operations of Owner, other contractors, or others performing work for Owner.

1.11 EASEMENTS AND RIGHTS-OF-WAY

A. Easements and rights-of-way will be provided by Owner in accordance with the General

Conditions. Confine construction operations to within Owner’s property, public rights-of-way, easements obtained by Owner, and the limits shown. Use care in placing construction tools, equipment, excavated materials, and products to be incorporated into the Work to avoid damaging property and interfering with traffic. Do not enter private property outside the construction limits without permission from the owner of the property.

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1.12 NOTICES TO OWNERS AND AUTHORITIES OF PROPERTIES ADJACENT TO THE

WORK

A. Notify owners of adjacent property and utilities when execution of the Work may affect their property, facilities, or use of property.

B. When it is necessary to temporarily obstruct access to property, or when utility service connection will be interrupted, provide notices sufficiently in advance to enable affected persons to provide for their needs. Conform notices to Laws and Regulations and, whether delivered orally or in writing, include appropriate information concerning the interruption and instructions on how to limit inconvenience caused.

C. Notify utility owners and other concerned entities at least 48 hours prior to cutting or closing streets or other traffic areas or excavating near Underground Facilities or exposed utilities.

1.13 SALVAGE OF EQUIPMENT AND MATERIALS

A. Existing equipment and materials removed and not shown or specified to be reused in the Work will be Contractor’s property, except the following items that shall remain

Owner’s property:

1. MCCs, as determined by the Town

2. VFDs

3. PLC’s

4. Thickened sludge pumps

B. Existing equipment and material removed by Contractor shall not be reused in the Work, except where specified or indicated.

C. Carefully remove in manner to prevent damage all equipment and materials specified or indicated to be salvaged and reused or to remain property of Owner. Store and protect salvaged items specified or indicated to be used in the Work. Replace in kind or with new items equipment, materials, and components damaged in removal, storage, or handling through carelessness or improper procedures.

D. Contractor may furnish and install new items, with Engineer’s approval, instead of those specified or indicated to be salvaged and reused, in which case such removed items will become Contractor’s property.

1.14 PARTIAL UTILIZATION BY OWNER

A. Owner reserves the right to enter and use portions of the Work prior to Certificate of

Substantial Completion is issued by Engineer.

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B. Owner shall be responsible to prevent premature connections by private and public parties, persons or groups of persons, before Engineer issues Certificate of Substantial

Completion for the portion of Work being partially utilized by Owner.

C. Contractor shall cooperate with Owner, Owner’s agents, and Engineer to accelerate completion of Work designed for partial utilization by Owner in accordance with

Contractor’s progress schedule.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXECUTION (NOT USED)

END OF SECTION

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SECTION 01 14 00

COORDINATION WITH OWNER’S OPERATIONS

PART 1 – GENERAL

1.01 SUMMARY

A. Section Includes:

1. Requirements for coordinating with Owner’s operations during the Work and included requirements for tie-ins and shutdowns necessary to complete the Work without impact on Owner’s operations except as allowed in this Section.

2. Contractor shall provide labor, materials, tools, equipment and incidentals shown, specified and required to coordinate with Owner’s operations during the Work.

B. General Requirements:

1. Except for shutdowns specified in this Section, perform the Work such that

Owner’s facility remains in continuous satisfactory operation during the Project.

Schedule and conduct the Work such that the Work does not: impede Owner’s production or processes, create potential hazards to operating equipment and personnel, reduce the quality of the facility’s products or effluent, or cause odors or other nuisances.

2. Work not specifically covered in this Section or in referenced Sections may, in general, be completed at any time during regular working hours in accordance with the General Conditions and Supplementary Conditions, subject to the requirements in this Section.

3. Contractor has the option of providing additional temporary facilities that can eliminate or mitigate a constraint without additional cost to Owner, provided such additional temporary facilities: do not present hazards to the public, personnel, structures, and equipment; that such additional temporary facilities do not adversely affect Owner’s ability to comply with Laws and Regulations, permits, and operating requirements; that such temporary facilities do not generate or foster the generation of odors and other nuisances; and that requirements of the Contract

Documents are fulfilled.

4. Coordinate shutdowns with Owner and Engineer. When possible, combine multiple tie-ins into a single shutdown to minimize impacts on Owner’s operations and processes.

5. Do not shut off or disconnect existing operating systems, unless accepted by

Engineer in writing. Operation of existing equipment will be by Owner unless otherwise specified or indicated. Where necessary for the Work, Contractor shall

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seal or bulkhead Owner-operated gates and valves to prevent leakage that may affect the Work, Owner’s operations, or both. Provide temporary watertight plugs, bulkheads, and line stops as required. After completing the Work, remove seals, plugs, bulkhead, and line stops to satisfaction of Engineer.

6. When open trench operations are performed, which can restrict delivery vehicle movement throughout the plant, Contractor shall provide steel plates which are rated for HS-20 loading to allow delivery vehicles to cross open trench areas during construction in locations shown on Contract Documents. Contractor shall coordinate with Owner to determine when deliveries will occur during the working day so that steel plates are in place to allow delivery vehicles to pass through work zone. Once authorized by Owner, steel plates can be removed, and construction activities can continue. At the end of each workday if trenches are left open, each trench shall be covered with steel plates.

C. Continuous Treatment Provision:

1. Federal regulations prohibit bypassing of untreated or partially treated wastewater or sewage during construction Work.

2. Contractor shall provide labor, equipment, materials, and incidentals to provide continuous treatment to the level prior to construction Work.

3. Contractor shall be responsible for providing temporary pumping facilities, systems, piping, valve, appurtenances, equipment, materials, and temporary utilities necessary to complete the Work without treatment bypassing.

D. Related Sections:

1. Section 01 11 00 − Summary of Work

2. Section 01 25 00 − Substitution Procedures

3. Section 01 73 00 − Demolition and Execution of Work

1.02 DEFINITIONS

A. A “shutdown” is when a portion of the normal operation of Owner’s facility, whether equipment, systems, piping, or conduit, has to be temporarily suspended or taken out of service to perform the Work.

B. Interim Substantial Completion (ISC) is achieved when a portion of the work as defined in these Contract Documents is complete to the degree acceptable by the Owner and

Engineer for the Owner’s beneficial use, thereby permitting the Contractor to advance to a subsequent, dependent phase of work.

1. Refer to the Owner’s General Conditions for Substantial Completion requirements which apply to both ISC and Overall Substantial Completion (OSC).

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1.03 ADMINISTRATIVE REQUIREMENTS

A. Coordination:

1. Review installation procedures under other Specification sections and coordinate

Work that must be performed with or before the Work specified in this Section.

2. Notify other contractors in advance of Work requiring coordination with Owner’s operations, to provide other contractors sufficient time for work included in their contracts that must be installed with or before Work specified in this Section.

3. When possible, combine multiple tie-ins into a single shutdown to minimize impacts on Owner’s operations and processes.

B. Pre-Shutdown Meetings: Contractor shall schedule and conduct meeting with Owner and Engineer prior to scheduling shutdown

C. Sequencing:

1. Perform the Work in the specified sequence. Certain phases or stages of the Work may require working 24-hour days or work during hours outside of regular working hours. Work may be accelerated from a later stage to an earlier stage if Owner’s operations are not adversely affected by proposed sequence change, with

Engineer’s acceptance. Stages specified in this Section are sequential in performance of the Work.

D. Scheduling:

1. Work that may interrupt normal operations shall be accomplished at times convenient to Owner.

2. Furnish at the Site, in close proximity to the shutdown and tie-in work areas, tools, equipment, spare parts and materials, both temporary and permanent, necessary to successfully complete the shutdown. Complete to the extent possible, prefabrication of piping and other assemblies prior to the associated shutdown

Demonstrate to Engineer’s satisfaction that Contractor has complied with these requirements before commencing the shutdown.

3. If Contractor’s operations cause an unscheduled interruption of Owner’s operations, immediately re-establish satisfactory operation for Owner.

4. Unscheduled shutdowns or interruptions of continued safe and satisfactory operation of Owner’s facilities that result in fines or penalties by authorities having jurisdiction shall be paid solely by Contractor if, in Engineer’s opinion, Contractor did not conform to the requirements of the Contract Documents, or was negligent in the Work, or did not exercise proper precautions in conducting the Work.

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5. Work requiring service interruptions for tie-ins shall be performed during scheduled shutdowns.

6. Temporary, short-term shutdowns of smaller piping, conduits, equipment, and systems may be required. Coordinate requirements for such shutdowns with

Engineer and Owner.

1.04 SUBMITTALS

A. Action/Informational Submittals:

1. Substitute Sequence Submittal: When deviation from specified sequence is proposed, provide submittal explaining in detail the proposed sequence change and its effects, including evidence that Owner’s operations will not be adversely affected by proposed change. List benefits of proposed sequence change, including benefits to Progress Schedule. Submit in accordance with Section 01 25

00 − Substitution Procedures.

2. Shutdown Planning Submittal:

a. For each shutdown, submit an inventory of labor and materials required to perform the shutdown and tie-in tasks, an estimate of time required to accomplish the complete shutdown including time for Owner to take down and start up existing equipment, systems, or conduits, and written description of steps required to complete the Work associated with the shutdown.

b. Furnish submittal to Engineer at least thirty (30) days prior to proposed shutdown start date. Do not start shutdown until obtaining Engineer’s acceptance of shutdown planning submittal.

3. Shutdown Notification: After acceptance of shutdown planning submittal and prior to starting the shutdown, provide written notification to Owner and Engineer of date and time each shutdown is to start. Provide notification at least 72 hours in advance of each shutdown.

1.05 SITE CONDITIONS

A. General Constraints: Specified in the Contract Documents are the sequence and shutdown durations, where applicable, for Owner’s equipment, systems, and conduits that are to be taken out of service temporarily for the Work. New equipment, materials, and systems may be used by Owner after the specified field quality controls and testing are successfully completed and the materials or equipment are Substantially Complete.

B. The following constraints apply to coordination with Owner’s operations:

1. Operational Access: Owner’s personnel shall have access to equipment and areas that remain in operation.

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2. Schedule and perform equipment and system start-ups for Monday through

Thursday. Equipment and systems shall not be placed into operation on Friday, Saturday, and Sunday without prior approval of Owner.

3. Dead End Valves or Pipe: Provide blind flanges, watertight bulkheads, or valves at temporary and permanent terminuses of pipes and conduits. Blind flanges and bulkheads shall be suitable for the service and braced and blocked, as required, or otherwise restrained as directed by Engineer. Temporary valves shall be suitable for their associated service. Where valve is provided at permanent terminus of pipe or conduit, also provide on downstream side of valve a blind flange with drain/flushing connection.

4. The Contractor shall be responsible for protecting existing equipment, building systems, and all Owner assets during construction activities. This includes but is not limited to:

a. Providing temporary barriers to prohibit physical damage from construction equipment or vehicles

b. Providing dust covering of equipment and appurtenances in areas of concrete demolition or other dust-forming activities

c. Parking of vehicles or stockpiling of materials in unauthorized locations which could damage underground utilities

5. It shall be the Contractor’s responsibility to dispose of all tank dewatered contents in a manner approved by the Owner and the Engineer. Owner will assist

Contractor in isolating process tanks, basins, conduits, and other work areas to be dewatered for shutdowns. Maintain clean and dry work area by pumping and properly disposing of fluid that accumulates in work areas.

6. Draining and Cleaning of Conduits, Tanks, and Basins: Unless otherwise specified, Owner will dewater process tanks and basins at beginning of each shutdown. Owner will flush and wash down tanks and basins with plant non-potable water. Draining and cleaning conducted by Contractor shall be as specified below:

a. Contractor shall remove liquids and solids and dispose of them at appropriate location at the Site as directed by Engineer. Contents of pipes, tanks, basins, and conduits undergoing modifications shall be transferred to existing process tanks or conduits at the Site with capacity sufficient to accept such discharges, using hoses, piping, pumps, or other means provided by Contractor. Discharge of fluids across floors is not allowed.

b. If drainage point is not available on the piping or conduit to be drained, provide a wet tap using tapping saddle and valve or other method approved

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by Engineer. Uncontrolled spillage of pipe’s or conduit’s contents is not allowed.

c. Spillage shall be brought to Engineer’s attention immediately, both verbally and in writing, and reported in accordance with Laws and Regulations.

Contractor shall wash down spillage to floor drains or sumps and flush the system to prevent clogging and odors. If spillage is not suitable for discharge to the drainage system, such as chemical spills, as determined by Engineer, Contractor shall remove spillage by other method, such as vactor truck, acceptable to Engineer.

7. Electrical, Control, Communication, and Monitoring Systems:

a. Owner’s existing SCADA system and fiber optic network shall remain functional, subject to the constraints herein.

b. Power to the Administration Building shall be available at all times, except for a shutdown allowed herein for reconnection of the building to SWGR-SEB.

c. Fiber optic communications and network connectivity to the Administration

Building and the Digester Building shall remain operational during the hours of 7:00AM and 5:00PM Monday-Friday.

d. Telephone service shall remain available at the Administration Building at all times throughout the project, including during the relocation of the underground telephone line for the waste gas flare installation. Provide temporary telephone connection as required during the underground telephone line relocation.

e. Unless Contractor elects to use existing fiber and/or temporary fiber, at his/her discretion, at least one communication path through the new dual redundant fiber optic ring to all communication points shall be in place at all times until substantial completion.

f. Each process area shall be permitted to have a single, non-concurrent, scheduled outage for the purpose of making PLC panel hardware modifications, loading the associated PLC logic, and its field testing/demonstration. Field testing and demonstration shall immediately follow modifications in an effort to keep scheduled shutdowns as short as possible. A 14-day day period of no SCADA outage shall proceed each scheduled shutdown.

1.06 SUGGESTED SEQUENCE OF WORK

A. Perform the Work in the specified sequence or as otherwise approved by Engineer.

Certain phases or stages of the Work may require working 24-hour days or work during hours outside of regular working hours. Work may be accelerated from a later stage to an earlier stage if Owner’s operations are not adversely affected by proposed sequence

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change, and with Engineer’s acceptance. Some areas of work specified in this Section are sequence-dependent.

1. Milestone 1: Digested Sludge Storage Tank (DSST) B Replacement

a. Milestone 1 work shall commence upon overall project NTP.

b. Milestone 1 work includes:

1) Demolition:

a) Existing DSST B and DSST B Foundation.

b) Existing valve vaults and yard piping.

c) Existing infrastructure that may impede construction of a new concrete storage tank (DSST B).

2) Construction of new DSST B and valve vaults.

3) The installation of mixing system components within DSST-B concurrent with DSST-B replacement. Mixing system piping shall extend beyond footprint of tank and be affixed with blind flanges or other acceptable means of capping to resist full tank pressure in order to facilitate connection of mixing pump discharge and suction piping.

c. DSST-B work shall commence prior to DSST-A work.

2. Milestone 2: DSST A Upgrades

a. Milestone 2 work shall not commence until Substantial Completion for

Milestone 1 is achieved.

b. Milestone 2 work includes the addition of mixing system piping and nozzles to DSST A. Mixing system piping shall extend beyond footprint of tank and be affixed with blind flanges or other acceptable means of capping to resist full tank pressure in order to facilitate connection of mixing pump discharge and suction piping.

3. Milestone 3: Demolition Phase A and Rehabilitation of Primary Sludge Pump

Station (PSPS) #2

a. Milestone 3 work shall commence upon overall project NTP.

b. Demolition includes:

1) Portions of yard piping in the area of the existing gravity thickeners, including utility piping and sidewalk as shown on the Contract

Drawings.

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2) Demolition of liquid sludge loading facility.

c. Milestone 3 work includes:

1) Removal of primary sludge pumps, electrical equipment, water heater and associated appurtenances and piping in PSPS 2.

2) Installation of new primary sludge pumps with associated piping, valves and meters.

3) Improvements to electrical, instrumentation, and HVAC.

4) Electrical system start-up and commissioning.

5) PSPS 1 and Primary Clarifiers A and B shall remain in service during this work.

4. Milestone 4: Rehabilitation of Primary Sludge Pump Station (PSPS) #1

a. Milestone 4 work shall not commence until Substantial Completion for

Milestone 3 is achieved.

b. Milestone 4 work includes:

1) Removal of primary scum pump, primary sludge pumps, electrical equipment, water heater and associated appurtenances and piping in

PSPS 1.

2) New work includes a new roof hatch for equipment access and installation of new primary sludge pumps and a new primary scum pump with associated piping, valves and meters.

3) Improvements to electrical, instrumentation, and HVAC systems.

4) Only one PSPS 1 clarifier shall be removed from service at a time to conduct this work.

5) PSPS 2 and Primary Clarifier C shall remain in service during this work.

5. Milestone 5 - Anaerobic Digester A and C rehabilitation

a. Milestone 5 work shall commence upon overall project NTP.

b. Milestone 5 includes the rehabilitation of Digesters A and C. Milestone 5 work shall be completed concurrently with Milestones 1-4 to remain within the Contract Time.

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c. Upgrades to the digesters include new covers and mixers, installation of foam separators, sediment traps and drip traps, and internal structural repairs. New piping, valves, flow meters, and digester gas safety equipment are to be provided.

d. Prior to any work on the digesters, the new flare shall be installed, connected to the digester gas piping in the yard, and available for operation.

e. A minimum of two (2) digesters must remain available to the Owner for service at all times. After following successful startup by the Contractor of the digesters indicated in this Milestone, there shall be a performance period not less than 2 months of continual steady state Digester operation by the

Owner. No shutdown of the second digester pair shall be permitted without written authorization of the Owner. The Contractor shall be responsible for operating the rehabilitated digesters during the performance period. The following metrics must be observed for Digester performance for a minimum of two consecutive weeks for the Digester rehabilitation to be considered substantially complete:

1) Minimum Volatile Solids Reduction = 70%

2) Maximum Acid Alkalinity Ration = 0.3

6. Milestone 6 - Anaerobic Digester B and D rehabilitation

a. Milestone 6 includes the rehabilitation of Digesters B and D. Milestone 6 work shall be completed concurrently with Milestones 1-4 to remain within the Contract Time. Work on Milestone 6 shall not commence until

Substantial Completion is achieved for Milestone 5.

b. Upgrades to the digesters include new covers and mixers, installation of foam separators, sediment traps and drip traps, and internal structural repairs. New piping, valves, flow meters, and digester gas safety equipment are to be provided.

c. A minimum of two (2) digesters must remain available to the Owner for service at all times. After following successful startup by the Contractor of the digesters indicated in this Milestone, there shall be a performance period not less than 2 months of continual steady state Digester operation by the

Owner. No shutdown of the second digester pair shall be permitted without written authorization of the Owner. The Contractor shall be responsible for operating the rehabilitated digesters during the performance period. The following metrics must be observed for Digester performance for a minimum of two consecutive weeks for the Digester rehabilitation to be considered substantially complete:

1) Minimum Volatile Solids Reduction = 70%

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2) Maximum Acid Alkalinity Ration = 0.3

7. Balance of Work (work shall commence upon overall project NTP)

a. New Gravity Thickeners Complex

1) Work includes construction of the Thickened Sludge Pumping Station, three Gravity Thickeners, two Gravity Thickener Scum Pits and Valve

Vaults, and associated yard utilities. The sequence shall begin with the construction of the Thickened Sludge Pumping Station followed by the

Gravity Thickeners, Scum Pits, and Valve Vaults.

2) Civil work to be completed requires excavation and shoring for the new pump station and gravity thickener tanks. Underslab utilities and piping to be installed prior to concrete pours and tank construction.

3) Mechanical and metal components, piping to scum pits and splitter box, and tank lining to be completed.

4) Odor control ductwork to be connected to existing odor control system.

5) Electrical and instrumentation/controls work to include systems for power lighting, process, and building support equipment.

6) The existing gravity thickeners and associated pumping and monitoring/control systems shall remain in service during the duration of this work.

7) Start-up, testing, and commissioning.

b. New Solids Electrical Building

1) The new Solids Electrical Building construction shall be completed concurrently with the New Gravity Thickeners Complex work to remain within the Contract Time.

2) Construction of the new solids electrical building including structural foundation, slabs and walls, CMU installation and roofing. Interior walls, waterproofing, lighting, doors and life safety requirements to be installed.

3) HVAC equipment, electrical components and connections, as well as the new electrical transformer are to be installed.

c. DSST Mixing System Building

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1) DSST Mixing System Building work includes the construction of a new building with pumps and supporting equipment to continuously recirculate the contents of the DSSTs.

2) DSST Mixing System building work shall commence after Substantial

Completion is achieved for Milestone 2.

d. Digester Building Upgrades

1) Upgrades to the digester building process equipment include:

a) Two new boilers and supporting digester heating equipment, and

4 new sludge heat exchangers.

b) A new centrifuge is to be provided with upgraded thickened digested sludge pumps; see Section 46 76 33 for testing details.

The centrifuge cannot be started up and commissioned until the

DSST Mixing System building work is Substantially Complete.

c) The Waste Gas Flare shall be demolished and installed new at the location indicated on the Drawings as early in the construction schedule as possible.

d) Sludge sampling system improvements

2) Upgrades to the building includes:

a) new CMU walls and beams

b) new doors and coatings

c) Electrical, HVAC, and I&C improvements

3) Prior to any work on the digester building, the new flare shall be installed, connected to the digester gas piping in the yard, and available for operation.

4) Demolition and replacement of the digester building roof sections must be completed prior to the installation of any electrical panels, control equipment, or new powered equipment on the Main floor of the building. Openings in the roof shall be covered to protect the building from exposure to the elements.

5) Work associated with the primary boiler replacement may only be performed in the months of May through October, inclusive, of a single calendar year. If as a result of the Contractor’s work, should the primary boiler be unavailable for digester heating during months where shutdown is prohibited, the Contractor shall be responsible for

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temporary heating as needed to maintain digester temperature at 100 degrees.

6) The Contractor shall not demolish the standby boiler to install the centrifuge polymer systems until the new boilers are installed and commissioned.

e. Demolition Phase B

1) Demolition Phase B work must be completed after Substantial

Completion is achieved for the New Gravity Thickeners Complex and

New Solids Electrical Building work.

2) Removal of the electrical substation 45B after all existing electrical loads have been relocated or decommissioned and substation is unpowered.

3) Demolition of Gravity Thickeners A and B, the existing splitter box, and associated process piping as shown on the Drawings.

f. Commissioning and Project Closeout

1) Commissioning of each process area shall be executed as system construction work complete and equipment is ready for ownership transfer. Project closeout shall not be executed until all process area systems are commissioned. Project Substantial Completion shall not be considered achieved until all process area systems are commissioned.

2) Civil sitework for the detention pond, paving, and landscaping shall occur concurrently across all stages. All work to convert the temporary sediment trap to the stormwater detention pond, stabilize all soils, and conduct general site cleanup shall be executed prior to overall project

Substantial Completion.

3) Final site work and demobilization.

1.07 TIE-INS

A. Table 01 14 00-A in this Section lists connections by Contractor to existing facilities.

Table 01 14 00-A may not include all tie-ins required for the Work; Contractor shall perform tie-ins required to complete the Work. For tie-ins not included in Table 01 14 00-

A, obtain requirements for tie-ins from Engineer.

B. All temporary utilities and other means necessary for tie-ins (e.g. electrical service, temporary generator, etc.) shall be the responsibility of the Contractor.

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1.08 SHUTDOWNS

A. General:

1. Work that may interrupt normal operations shall be accomplished at times convenient to Owner.

2. Furnish at the Site, in close proximity to the shutdown and tie-in work areas, tools, equipment, spare parts and materials, both temporary and permanent, necessary to successfully complete the shutdown. Complete to the extent possible, prefabrication of piping and other assemblies prior to the associated shutdown.

Demonstrate to Engineer’s satisfaction that Contractor has complied with these requirements before commencing the shutdown.

3. If Contractor’s operations cause an unscheduled interruption of Owner’s operations, immediately re-establish satisfactory operation for Owner.

4. Unscheduled shutdowns or interruptions of continued safe and satisfactory operation of Owner’s facilities that result in fines or penalties by authorities having jurisdiction shall be paid solely by Contractor if, in Engineer’s opinion, Contractor did not conform to the requirements of the Contract Documents, or was negligent in the Work, or did not exercise proper precautions in conducting the Work.

5. Shutdowns shall be in accordance with Table 01 14 00-B of this Section. Work requiring service interruptions for tie-ins shall be performed during scheduled shutdowns.

6. Temporary, short-term shutdowns of smaller piping, conduits, equipment, and systems may not be included in Table 01 14 00-B. Coordinate requirements for such shutdowns with Engineer and Owner.

B. Treatment Process Shutdown and Site Access Constraints:

1. Owner shall have the following unit processes and equipment operational at all times during the Project, unless specified herein:

a. Two of three primary clarifiers and their associated primary sludge pumping and process monitoring/control systems.

b. Two existing gravity thickeners and their associated thickened sludge pumps, or two of three new gravity thickeners and their associated thickened sludge pumping and process monitoring/control systems.

c. Two of four anaerobic digesters and their associated pumping and process monitoring/control systems.

d. One of two Digested Sludge Storage Tanks (DSSTs) and their associated pumping and process monitoring/control systems.

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e. All process systems currently powered from Substation 45B.

2. Owner shall have roadway access for trucks to access silos at the solids processing building and between digested sludge storage ranks.

3. Chemical delivery access is not to be impacted or restricted. Chemical delivery access includes but is not limited to the Solids Processing Building, Methanol

Storage and Pumping building, and the Chemical Building.

C. Shutdowns of Electrical Systems: Comply with Laws and Regulations, including the

National Electric Code. Contractor shall lock out and tag circuit breakers and switches operated by Owner and shall verify that affected cables and wires are de-energized to ground potential before shutdown Work is started. Upon completion of shutdown Work, remove the locks and tags and notify Engineer that facilities are available for use.

D. Shutdowns of Communications, SCADA, and Networking:

1. Network connection(s) shall be maintained for all instrumentation and process equipment associated with all in-service equipment at all times, except for outages as allowed herein.

2. The Contractor is allowed a maximum of two (2) area outages for a duration of four

(4) consecutive hours each to facilitate network tie-ins.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXECUTION

3.01 GENERAL

A. In addition to requirements of this Section, conform to requirements of Section 01 73 00

− Demolition and Execution of Work.

B. Refer to Table 01 14 00-B in this Section for schedule of process equipment and service lines out-of-service during shutdown.

C. Refer to Table 01 14 00-B in this Section for schedule of process equipment in operation during shutdown.

D. Refer to Table 01 14 00-B in this Section for tie-ins required during each shutdown.

Refer to Table 01 14 00-A in this Section for detailed tie-in schedule.

E. Refer to Table 01 14 00-B in this Section for duration of each shutdown.

3.02 DETAILED SHUTDOWN REQUIREMENTS:

A. Prior to Typical Shutdown:

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1. Obtain Engineer’s acceptance of proposed shutdown planning submittal and shutdown notification submittal.

2. Submittal and approval of all shop drawings required.

3. Coordinate with plant operations on timing of shutdown and provide required notice to Owner.

4. Bring necessary piping, couplings, valves, equipment, and appurtenances to the work areas.

5. Coordinate other tie-ins to be performed simultaneously.

6. Install and ensure functionality of temporary systems as applicable.

B. During Typical Shutdown:

1. Owner will dewater tanks and basins.

2. Owner and/or Engineer will verify to the contractor which equipment and structures are to remain in place and which are to be removed and/or modified.

3. Remove existing equipment, piping, and accessories as required.

4. Verify operation of new equipment, materials, and systems.

5. Following approval from Engineer, return equipment and system to operation with

Owner.

C. Following Typical Shutdown:

1. Verify functionality of equipment and system.

2. Verify operation of new equipment and systems, and verify that…