25-8408_-_Exhibit_J_-_Technical_Specifications_S&S_6.10.pdf

Collier County Public Utilities TECHNICAL SPECIFICATIONS

CENTRAL COUNTY WATER

RECLAMATION FACILITY EXPANSION

Supplemental Technical Specifications – Bid Set

PREPARED BY:

tyler.wainright Text Box Tetra Tech Inc.

10600 Chevrolet Way, Suite 102 Estero FL 33928 tyler.wainright Line

COLLIER COUNTY SUPPLEMENTAL TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-1

SUPPLEMENTAL TECHNICAL SPECIFICATIONS

Note: The following technical specifications shall be incorporated into the Contract Documents for the

Central County Water Reclamation Facility Expansion project. In addition to these supplemental technical specifications, the Collier County Utility Standards Manual shall apply to this project. The

Collier County Utility Standards Manual can be found at:

https://www.colliercountyfl.gov/

DIVISION 01 – GENERAL REQUIREMENTS

011100 SUMMARY OF WORK

012200 MEASUREMENT AND PAYMENT

012663 CHANGE ORDER PROCEDURES

012900 APPLICATION FOR PAYMENT

012973 SCHEDULE OF VALUES

013113 PROJECT COORDINATION

013119 PROJECT MEETINGS

013216 CONSTRUCTION SCHEDULES

013323 SHOP DRAWINGS

014127 NPDES REQUIREMENTS

014200 REFERENCE STANDARDS

014500 QUALITY CONTROL

015000 CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS

015300 PROTECTION OF EXISTING FACILITIES

015400 HURRICANE PREPAREDNESS

015700 CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS

015713 TEMPORARY EROSION AND SEDIMENTATION CONTROL

016100 MATERIALS AND EQUIPMENT

017113 MOBILIZATION

017123 FIELD ENGINEERING

017400 CLEANING

017500 STARTING OF MECHANICAL SYSTEMS

017700 CONTRACT CLOSEOUT

017823 OPERATING AND MAINTENANCE DATA

017833 WARRANTIES AND BONDS

017839 PROJECT RECORD DOCUMENTS

019114 SYSTEM START-UP AND TESTING

DIVISION 02 – SITE CONSTRUCTION

020500 CONNECTIONS TO EXISTING SYSTEMS

022100 LINES AND GRADES

https://www.colliercountyfl.gov/home/showpublisheddocument/83280/636777869161770000

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-2

DIVISION 02 – SITE CONSTRUCTION (CONT)

022200 PRE-CONSTRUCTION AUDIO-VIDEO RECORDING

022501 LEAKAGE TESTS

024100 DEMOLITION

025400 DISINFECTION

DIVISION 03 – CONCRETE

030510 LEAKAGE TESTING OF HYDRAULIC STRUCTURES

031100 CONCRETE FORMWORK

031500 CONCRETE JOINTS, WATER STOPS, AND SEALANTS

032000 CONCRETE REINFORCEMENT

033000 CAST-IN-PLACE CONCRETE

033500 CONCRETE FINISHING AND CURING

034100 PRECAST CONCRETE STRUCTURES

034130 HOLLOW CORE SLABS

DIVISION 04 – MASONRY

042000 UNIT MASONRY

DIVISION 05 – METALS

050523 BOLTS, WASHERS, ANCHORS, AND EYEBOLTS

051200 MISCELLANEOUS STRUCTURAL STEEL AND ALUMINUM

054000 COLD FORMED METAL FRAMING

055100 LADDERS, STAIRS, AND STAIR NOSINGS

055200 HANDRAILS AND SAFETY CHAINS

055300 GRATING, COVER PLATES, AND ACCESS HATCHES

DIVISION 06 – WOODS, PLASTICS, AND COMPOSITES

061000 ROUGH CARPENTRY

064116 PLASTIC LAMINATE CLAD ARCHITECTURAL CABINETS

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

071900 WATER REPELLENTS

072100 THERMAL INSULATION

074116 STANDING SEAM METAL ROOFING

075423 THERMOPLASTIC-POLYOLEFIN (TPO) ROOFING SYSTEM

076200 SHEET METAL FLASHING AND TRIM

079200 JOINT SEALANTS

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-3

DIVISION 08 – OPENINGS

081416 FLUSH WOOD DOORS

082200 FIBERGLASS REINFORCED PLASTIC DOORS AND FRAMES

083323 OVERHEAD COILING DOORS

084113 ALUMINUM ENTRANCES AND STOREFRONTS

087100 DOOR HARDWARE

088000 GLAZING

089000 ALUMINUM LOUVERS AND VENTS

DIVISION 09 – FINISHES

092400 CEMENT PLASTERING

092900 GYPSUM BOARD

095113 ACOUSTIC PANEL CEILINGS

096513 RESILIENT BASE AND ACCESSORIES

099000 HIGH PERFORMANCE PAINTS AND COATINGS

099050 PIPING, VALVE, AND EQUIPMENT IDENTIFICATION SYSTEM

099723 CONCRETE REHABILITATION AND STRUCTURAL LININGS

DIVISION 10 – SPECIALTIES

104400 SIGNAGE SYSTEMS

104416 FIRE EXTINGUISHERS AND ACCESSORIES

107316 PROTECTIVE ALUMINUM CANOPY

DIVISION 11 THROUGH DIVISION 12 (NOT USED)

DIVISION 13 – SPECIAL CONSTRUCTION

132050 PRESTRESSED CIRCULAR CONCRETE WATER STORAGE TANKS (AWWA D-110 TYPE II)

132320 FLAT ALUMINUM COVER SPECIFICATION

DIVISION 14 – CONVEYING EQUIPMENT

146000 HOISTS AND CRANES

DIVISION 15 THROUGH DIVISION 20 (NOT USED)

DIVISION 21 – FIRE PROTECTION

210500 COMMON WORK RESULTS FOR FIRE SUPPRESSION

211313 WET-PIPE SPRINKLER SYSTEMS

DIVISION 22 – PLUMBING

220523 GENERAL-DUTY VALVES FOR PLUMBING PIPING

220529 HANGERS AND SUPPORTS FOR PLUMBING PIPING AND EQUIPMENT

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-4

DIVISION 22 – PLUMBING (CONTINUED)

220553 IDENTIFICATION FOR PLUMBING PIPING AND EQUIPMENT

220700 PLUMBING INSULATION

221100 FACILITY WATER DISTRIBUTION

221300 FACILITY SANITARY SEWERAGE

221519 GENERAL SERVICE PACKAGED AIR COMPRESSORS AND RECEIVERS

223300 ELECTRIC DOMESTIC WATER HEATERS

224000 PLUMBING FIXTURES

DIVISION 23 – HVAC

230513 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

230529 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

230553 IDENFICATION FOR HVAC PIPING AND EQUIPMENT

230593 TESTING, ADJUSTING, AND BALANCING FOR HVAC

230700 HVAC INSULATION

230805 COATINGS FOR HVAC

230900 INSTRUMENTATION AND CONTROL FOR HVAC

230923 DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

231113 FACILITY FUEL-OIL PIPING

231213 FACILITY FUEL-OIL PUMPS

231300 FACILITY FUEL-STORAGE TANKS

232300 REFRIGERANT PIPING

232416 INTERNAL-COMBUSTION ENGINE EXHAUST PIPING

232516 DIESEL EMISSIONS FLUID SYSTEM

233100 HVAC DUCTS AND CASINGS

233116 NONMETAL DUCTS

233300 AIR DUCT ACCESORIES

233400 HVAC FANS

233600 AIR TERMINAL UNITS

233700 AIR OUTLETS AND INLETS

237300 INDOOR CENTRAL-STATION AIR-HANDLING UNITS

238126 SPLIT-SYSTEM AIR-CONDITIONERS

DIVISION 24 THROUGH DIVISION 25 (NOT USED)

DIVISION 26 – ELECTRICAL

260100 SELECTIVE DEMOLITION FOR ELECTRICAL

260500 COMMISONING FOR ELECTRICAL SYSTEMS

260510 GENERAL EQUIPMENT STIPULATIONS

260511 BASIC ELECTRICAL REQUIREMENTS

260513 WIRES AND CABLES

260519 LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

260523 CONTROL-COLTAGE ELECTRICAL POWER CABLES

260526 GROUNDING

260529 SUPPORTING DEVICES

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-5

DIVISION 26 – ELECTRICAL (CONTINUED)

260533 RACEWAYS

260535 CABINETS, BOXES, AND FITTINGS

260536 CABLE TRAYS

260543 UNDERGROUND SYSTEM

260553 ELECTRICAL IDENTIFICATION

260573 SHORT-CIRCUIT STUDIES

260574 COORDINATION STUDIES

260575 POWER SYSTEM STUDIES

260590 CONDUIT LAYOUT DRAWINGS

262200 LOW VOLTAGE TRANSFORMERS

262213 TRANSFORMERS

262300 LOW VOLTAGE SWITCHGEAR

262313 PARALLELING (FUTURE) LOW-VOLTAGE SWITCHGEAR

262416 PANELBOARDS

262419 MOTOR CONTROL CENTERS

262726 WIRING DEVICES

262813 CIRCUIT AND MOTOR DISCONNECTS

262913 MOTOR CONTROLLERS

262923 VARIABLE FREQUENCY DRIVE UNIT

263213 STANDBY DIESEL GENERATOR SETS

263353 UNINTERRUPTIBLE POWER SUPPLY SYSTEMS

264113 LIGHTING PROTECTION

264313 SURGE PROTECTION DEVICES

265119 LIGHTING FIXTURES

265613 POLES AND STANDARDS

266001 MOTORS

DIVISION 27 (NOT USED)

DIVISION 28

283100 FIRE ALARM

DIVISION 29 THROUGH DIVISION 30 (NOT USED)

DIVISION 31 – EARTHWORK

311000 SITE PREPARATION

312316 EXCAVATION – EARTH AND ROCK

312319 GROUNDWATER CONTROL FOR OPEN CUT EXCAVATION

312323 BACKFILLING

312333 TRENCH SAFETY

312500 TEMPORARY EROSION CONTROL

313116 TERMITE CONTROL

314000 SHORING, SHEETING AND BRACING

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-6

DIVISION 32 – EXTERIOR IMPROVEMENTS

320117 PAVEMENT REPAIR AND RESTORATION

321300 SIDEWALKS, DRIVEWAYS, AND CURBS

329200 RESTORATION BY SODDING OR SEEDING

DIVISION 33 – UTILITIES

330100 MECHANICAL-GENERAL REQUIREMENTS

330130.16 TELEVISING AND INSPECTION OF GRAVITY SEWER SYSTEMS

330503 POLYVINYL CHLORIDE (PVC) PIPE AND FITTINGS

330504 DUCTILE IRON PIPE (DIP) AND FITTINGS

330518 LAYING AND JOINTING BURIED PIPELINES

330520 PIPE REMOVAL AND ABANDONMENT

330532 CHLORINATED POLYVINYL CHLORIDE (CPVC) PIPE AND FITTINGS

331200 WATER VALVES AND APPURTENANCES

331619 HYDRANTS

333313 WASTEWATER VALVES AND APPURTENANCES

333700 WEIRS AND GATES

333913 SEWER MANHOLES

335103 BUTTERFLY VALVES

335110 TILTING DISK CHECK VALVES

335117 WATER REGULATING VALVES

DIVISION 34 THROUGH DIVISION 39 (NOT USED)

DIVISION 40 – PROCESS INTEGRATION

400506 COUPLINGS AND CONNECTORS

400507 HANGERS AND SUPPORTS FOR PROCESS PIPING

400524 STAINLESS STEEL PIPE

406113 BASIC INSTRUMENTATION REQUIREMENTS

406120 CONTROL PANELS

406123 PROGRAMMABLE LOGIC CONTROLLERS

406166 SOFTWARE SERVICES

406700 I/O TABLE

409236 VALVE ACTUATORS, ELECTRIC

DIVISION 41 – MATERIAL PROCESSING AND HANDLING EQUIPMENT

411213 SHAFTLESS SCREW CONVEYOR SYSTEM

DIVISION 42 (NOT USED)

DIVISION 43 – PROCESS GAS AND LIQUID HANDLING

431115 TURBO BLOWERS

431219 POSITIVE DISPLACEMENT BLOWERS AND ACCESSORIES

COLLIER COUNTY TABLE OF CONTENTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 00020-7

DIVISION 43 – PROCESS GAS AND LIQUID HANDLING (CONTINUED)

432141 DRY PIT MOUNTED SUBMERSIBLE WASTEWATER PUMPS

432357 PROGRESSING CAVITY PUMPS

432123 HORIZONTAL SPLIT CASE PUMPS

433210 BIOTRICKLING FILTER

433211 PACKAGED BIOFILTER ODOR CONTROL SYSTEM

433212 CARBON ADSORBER ODOR CONTROL SYSTEM

433269 CHEMICAL STORAGE AND FEED SYSTEMS

433270 CHEMICAL FEED PIPING

DIVISION 43 – PROCESS GAS AND LIQUID HANDLING (CONTINUED)

434143 FIBERGLASS REINFORCED PLASTIC TANKS AND ACCESSORIES

DIVISION 44 – POLLUTION CONTROL EQUIPMENT

444201 HYDRAULIC AERATION AND MIXING SYSTEM

444202 SUBMERSIBLE MIXERS

444203 HEADCELL GRIT REMOVAL SYSTEM

444208 AUTOMATIC COMPOSITE SAMPLER

444212 FINE BUBBLE DISC DIFFUSERS

444213 COARSE BUBBLE DIFFUSERS

444300 MEMBRANE FILTRATION SYSTEM

444330 TANK MOUNTED CYLINDRICAL PERFORATED PLATE SCREEN

444333 MECHANICALLY CLEANED BAR SCREEN AND SCREENINGS COMPACTOR

444600 FLOCCULATION TANK AND DEWATERING SCREW PRESS

DIVISION 45 (NOT USED)

DIVISION 46 – WATER AND WASTEWATER EQUIPMENT

462140 VERTICAL TURBINE HIGH SERVICE PUMPS

462180 VERTICAL TURBINE TRANSFER/REJECT PUMPS

462190 VERTICAL TURBINE DEEP INJECTION WELL PUMPS

463600 POLYMER FEED SYSTEM

APPENDIX A – GEOTECHNICAL REPORT

APPENDIX B – COLLIER COUNTY SCADA STANDARDS

APPENDIX C - ERP PERMIT

APPENDIX D - SDPA APPROVAL

APPENDIX E - FDEP PERMIT

END OF TABLE OF CONTENTS

COLLIER COUNTY SUMMARY OF WORK

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 011100-1

SECTION 011100

SUMMARY OF WORK

PART 1 – GENERAL

1.01 REQUIREMENTS INCLUDED

A. Description of Work

B. CONTRACTOR's Use of Site

C. Work Sequence

D. COUNTY Occupancy

1.02 RELATED REQUIREMENTS

A. The Work covered under this contract includes but is not limited to the following:

1. Construction of a new headworks, mechanical screening, grit removal and pumps, grit classifier, and splitter box.

2. Construction of a new flow equalization basin, hydraulic mixing and aeration system, odor control, aluminum cover, and dry-pit submersible pumps.

3. Construction of fine screens upstream of MBR system.

4. Construction of a new activated sludge treatment process consisting of anaerobic, 1st anoxic, aeration, swing, and 2nd anoxic basins. Equipment includes submersible mixers, turbo blowers, aluminum covers, odor control and fine bubble diffusers.

5. Construction of MBR filtration system consisting of membrane units, RAS pumps, process scour blowers, permeate pumps, chemical cleaning system, piping, valves, and miscellaneous appurtenances.

6. Construction of a new sludge holding tank that includes coarse bubble diffusers, submersible mixers, and odor control.

7. Construction of a new dewatering facility that includes two (2) screw presses, polymer system, sludge feed pumps, screw conveyors, and truck loading bays.

8. Construction of two (2) new reject ground storage tanks, and effluent transfer pump station.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 011100-2

9. Construction of a new chlorine contact chamber, chemical storage tank and associated piping.

10. Yard piping improvements to connect the new processes and tie ins to existing piping.

11. Construction of blower/electrical building, electrical and instrumentation improvements, and miscellaneous civil improvements.

12. Piping connections for the proposed deep injection well (injection well construction by others).

B. The Work includes:

1. Furnishing of all labor, select materials, superintendence, plant, power, light, heat, fuel, water, tools, appliances, equipment, supplies, services, and other means of construction necessary or proper for performing and completing the Work.

2. Maintaining the Work area and site in a clean and acceptable manner.

3. Protection of finished and unfinished Work.

4. Repair and restoration of Work or existing facilities damaged during construction.

5. Furnishing as necessary proper equipment and machinery, of a sufficient capacity, to facilitate the Work and to handle all emergencies normally encountered in Work of this character.

6. Furnishing, installing, and protecting all necessary guides, track rails, bearing plates, anchor and attachment bolts, and all other appurtenances needed for the installation of the devices included in the equipment specified. Make anchor bolts of appropriate size, strength and material for the purpose intended. Furnish substantial templates and shop drawings for installation.

C. Implied and Normally Required Work: It is the intent of these Specifications to provide the COUNTY with complete operable systems, subsystems, and other items of Work. Any part or item of Work, which is reasonably implied or normally required to make each installation satisfactorily and completely operable, is deemed to be included in the Work and the Contract Amount. All miscellaneous appurtenances and other items of Work incidental to meeting the intent of these Specifications are included in the Work and the Contract Amount even though these appurtenances may not be specifically called for in these Specifications.

D. Quality of Work: Regard the apparent silence of the Contract Documents as to any detail, or the apparent omission from them of a detailed description concerning any Work to be done and materials to be furnished as meaning that only the best general practice is to prevail and that only materials and workmanship of the best quality are to be used.

Interpretation of these specifications will be made upon this basis.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 011100-3

1.03 BID ALTERNATE

A. This project will include a Bid Alternate for the construction of the two 2.5-million-gallon reclaimed water storage tanks, the reclaimed water high service pump station, and the associate piping and electrical improvements associated with each location.

B. The Drawings include delineation of work that is included in the Base Bid vs. the Bid Alternate.

All items included in the Bid Alternate shall be included under the appropriate Bid Form item.

1.04 CONTRACTOR'S USE OF SITE

A. Limit use of site and premises for work and storage to allow for the following:

1. Coordination of the Work under this CONTRACT with the work of the other contractors where Work under this CONTRACT encroaches on the Work of other contractors.

2. COUNTY occupancy and access to operate existing facilities.

3. Coordination of site use with ENGINEER.

4. Responsibility for protection and safekeeping of products under this CONTRACT.

5. Providing additional off-site storage at no additional cost to the COUNTY as needed.

1.05 WORK SEQUENCE

A. Construct Work in stages to accommodate the COUNTY’s use of premises during construction period and in accordance with the limitations on the sequence of construction specified. Coordinate construction schedules and operations with

ENGINEER.

B. Coordinate Work of all subcontractors.

C. Contractor shall coordinate work sequence per the following:

1. Construct and bring into service the chlorine contact tank, sodium hypochlorite storage and feed system, effluent transfer pump station, ground storage tanks and high service pump station. The ground storage tanks and high service pump station maybe used to store treated effluent for construction use and testing once the have been accepted by the Owner (if included in the project). The Owner does not guarantee the quantity of water that will be available for Contractor’s use. Any water needed for construction purposes and testing prior to or in addition to that stored in the ground storage tanks shall be provided by the Contractor. The Owner will provide effluent as available for construction use.

Contractor shall provide temporary connections, flow meters, and pumps, if necessary, to convey plant effluent for construction use.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 011100-4

2. Prior to commissioning the membrane bioreactor, the mixed liquor needs to be screened thru a 2.0 mm screen for a minimum of 30 day. Refer to Specification 444300 Membrane Filtration System. To achieve this the Contractor shall construct and bring into service the preliminary treatment screening equipment (Specification 444333 Mechanically Cleaned Bar Screen and Screenings Compactor), Headcell Grit Removal System (Specification 444203) and MBR fine screens (Specification 444330 Tank Mounted Cylindrical Perforated Plate Screen).

Contractor shall provide temporary pumps and piping to pump mixed liquor from the existing WWTP No. 1 to the head of the preliminary treatment structure.

Mixed liquor shall pass thru the 6.0 mm screens at the preliminary treatment structure and bypass the grit equipment to flow by gravity to the fine screens (2.0

mm) screen and to one of the fermentation basins. The Contractor shall also provide temporary pumping and piping to return the screened mixed liquor from the fermentation basin back to the existing WWTP.

3. Transfer raw wastewater to new preliminary treatment structure, bring online the remaining equipment at the preliminary treatment structure, flow equalization basin and odor control system, one train of the membrane bioreactor (all four) membrane trains), MBR odor control system, sludge holding tank, sludge dewatering facility. Anticipate up to sixty-five (65) days to seed the new process treatment train, achieve operating levels, and complete membrane filtration system acceptance testing. Operating levels shall be achieved prior to final acceptance testing of the membrane filtration equipment. The existing headworks structure and piping shall remain in operation until the proposed preliminary treatment structure is substantially complete and ready to accept raw wastewater. Any temporary piping, excavation, tankage, and pumping that may be required in order to keep the existing wastewater treatment plant in operation while the construction of the new facility is being completed shall be the responsibility of the Contractor.

4. Upon completion of demonstration and acceptance testing of the membrane filtration system, transfer mixed liquor to the other treatment train and operate for 30 days. Upon Owner’s request, drain and clean the remaining treatment train. Prepare mixers and diffusers for long term storage in place per the manufacturer’s recommendations.

1.06 COUNTY OCCUPANCY

A. The COUNTY will occupy premises during entire period of construction in order to maintain normal operations. Cooperate with the COUNTY's Manager or designee in all construction operations to minimize conflict, and to facilitate COUNTY usage.

B. Conduct operations with the least inconvenience to the general public.

1.07 PROTECTION OF EXISTING UTILITIES

A. In case of damage to existing utilities caused by construction activities, contact the owner of the utility or appropriate COUNTY department (Water or Wastewater) immediately.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 011100-5

Repair any damage to existing utilities caused by construction activities in coordination with or as directed by the owner of the utility.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXECUTION

3.01 Starting Work: Start Work within 10 days following the date stated in the Notice to Proceed and execute with such progress as may be required to prevent delay to other contractors or to the general completion of the project. Execute Work at such items and in or on such parts of the project, and with such forces, material, and equipment, as to complete the Work in the time established by the Contract. At all times, schedule and direct the Work so that it provides an orderly progression to completion within the specified time for completion.

END OF SECTION

COLLIER COUNTY MEASUREMENT AND PAYMENT

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-1

SECTION 012200

MEASUREMENT AND PAYMENT

PART 1- GENERAL

1.01 DESCRIPTION

A. This section describes the method used to determine quantities of Work performed or materials supplied for which a price is given in the Bid. It establishes the basis upon which payment will be made for Payment Items.

B. Subject to the provisions in General Conditions, all Work and payment for the Work is represented by Payment Items and associated unit prices.

1.02 PAYMENT

A. Subject to all other contract requirements, the Contractor shall be paid for "as-built" quantities of Work for which a price is given in the bid.

B. Quantities on the Bid Form are for comparison in competitive bidding only and do not constitute the basis for payment or measurement of quantities.

C. Quantities on the Bid Form are estimated and may be increased or decreased without limit.

D. No separate payment will be made for one Payment Item as Work incidentally required to complete the Work of another.

E. Payment for Work performed shall be made in accordance with the unit prices in the

Bid. Retainage shall apply to all Contractor payments prior to final acceptance.

1.03 MEASUREMENT FOR PAYMENT

A. Methods of Measurement:

1. Measurements of lengths, widths, slope angles, and depths or elevations shall be made to determine "as-built" quantities of lengths, areas, and volumes pertinent to Payment Items.

a. Unless otherwise specified, all lengths shall be horizontal distances.

b. Slope angles and elevations shall be measured using land surveying equipment.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-2

2. Graphic representations of measured quantities shall be drafted to scale using the Drawings where convenient and appropriate. Additional drawings shall be drafted if required.

a. Irregular shapes representing areas and volumes shall be measured using a compensating polar planimeter or a computer digitizer.

b. Regular shapes shall be scaled.

3. Use of Drawings:

a. Unless otherwise agreed upon between the Contractor and Owner, the

Drawings shall be used as the basis to establish existing grades and other existing topographic features.

B. Payment limits where Payment Lines are not shown on the Drawings:

1. Pipe Length: Measurement of pipe shall be made along the top of pipe, excluding fittings, valves, and manholes, in place, taken as the laying length.

2. Except as specified otherwise, measurements of Payment Item quantities of weights, lengths, areas, and volumes shall be made:

a. On "as-built" and in-place completed Work, during construction or at the time of Substantial Completion.

b. If no other feasible and practical methods of measurements are available, by delivery slips delivered to the Engineer.

3. Adjustments shall be made to eliminate overlaps in area and volume measurements.

1.04 PAYMENT ITEMS

A. Separate payment will be made for the Unit Price and Lump Sum items listed on the Bid Form. Related work not specifically listed or identified below in 1.04 B and C, but evidently necessary for satisfactory completion of the Item shall be considered to be included.

B. No separate payment will be made for the following Work, and its cost shall be included in the Bid Price of the Payment Item to which it is associated:

1. Trench excavation, sheeting, shoring, and bracing.

2. De-watering, erosion and sedimentation control, and turbidity screening.

3. Removal, replacement and restoration of culverts and storm sewer pipe crossings of driveways and roads.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-3

4. Cleanup.

5. Testing, including all materials and equipment.

6. Maintenance of utility service.

7. Appurtenant work.

8. Record Drawings.

9. Field Office.

10. Saw cutting.

11. Coordination with other contractors.

12. Layout of the work.

13. Notifications to property owners of construction schedule and service interruptions.

14. Restoration and Sodding

15. Rock and muck removal

C. Measurement and Payment Items as listed in the Bid Schedule:

Bid Items 1 through 7 are included in the Base Bid:

1. Mobilization/Demobilization & General Requirements (Bid Item No. 1)

Preparatory Work and operations in mobilizing for beginning work on the

Project and demobilizing for ending work on the Project. The establishment of field offices, buildings, safety equipment, first aid supplies, sanitary and other facilities, as required by these Specifications, State and local laws and any other preconstruction expense necessary for the state of the Work; the cost of field engineering, including permits and fees, construction schedules, insurance requirements costs, the costs of all bonds, and all administrative costs associated with acquiring and maintaining the necessary coverage as described in the Contract Documents, and the cost of obtaining an NPDES permit, construction photographs, project signs, shop drawings, temporary facilities, lay down storage area, construction aids, work associated with Contractor support during Owner testing, reviews and inspection, re-inspection and any rework resulting from same, cleaning, surveyed project as-built documents, operating and maintenance data. The Contractor shall submit invoices substantiating the cost of mobilization with each pay request. Payment for mobilization / demobilization & general requirements shall be as follows: 75% shall be paid at the time of first invoice after the Contractor has mobilized to the site and established field operations. The remaining 25% shall be paid at the completion

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-4

of the project when the contractor has properly demobilized, cleaned the site, and completed all restoration.

2. Civil Site Improvements (Bid Item No. 2)

The work under this item includes all labor, materials, equipment, and incidentals required to perform all civil site work necessary for the development of the wastewater treatment plant site. This includes, but is not limited to, clearing and grubbing, site grading, excavation and fill, stormwater pond construction, stormwater piping and structures, roadway improvements, sidewalks, driveways, parking areas, fencing, and final restoration.

This item shall include, but is not limited to, the following:

• Clearing, Grubbing, and Site Preparation

• Removal of trees, stumps, vegetation, and debris

• Stripping of topsoil and disposal off-site

• Preservation of existing utilities and features not to be disturbed

• Earthwork

• Excavation, embankment, and grading of the entire site

• Subgrade preparation, compaction, and soil stabilization

• Import and placement of fill material as required

• Roadway and Hardscape Construction

• Internal roadways, parking lots, and driveways

• Base course, asphalt paving, curbs, gutters, and striping

• Sidewalks, ADA-compliant ramps, and concrete aprons

• Stormwater Management

• Construction of stormwater retention/detention ponds

• Stormwater piping, culverts, structures, manholes, and inlets

• Erosion and sediment control systems during construction

• Stabilization and final grading around stormwater features

• Fencing and Site Security

• Perimeter security fencing with gates

• Access controls, bollards, and signage

• Miscellaneous Civil Items

• Concrete pads and slabs not associated with buildings

• Construction of swales, berms, or drainage ditches

• Site restoration and seeding/sodding of disturbed areas

• Dust control and temporary erosion control

• Coordination and Protection

• Utility locates and protection of existing infrastructure

• Coordination with other trades and site features

a. Measurement for this item will be made on a lump sum basis, encompassing all components of civil site work as described above and as shown on the Drawings. No separate or additional measurement will be made for individual elements or components.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-5

b. Payment shall be made at the lump sum price bid for “Civil Site

Improvements.” This price shall constitute full compensation for all labor, materials, equipment, excavation, fill, grading, stormwater system construction, roadways, sidewalks, fencing, restoration, and other site-related civil work as required to prepare and finish the site in accordance with the Contract Documents. No separate payment will be made for clearing, erosion control, dust control, or minor grading adjustments unless otherwise stated. All work shall comply with applicable local, state, and federal regulations including the Florida Building Code, FDEP stormwater rules, NPDES requirements, and the project’s approved site development plan.

3. Process (Bid Item No. 3)

The work under this item includes all labor, materials, equipment, installation, testing, startup, and commissioning required to furnish and install the complete process systems for the wastewater treatment plant. This includes, but is not limited to, the membrane bioreactor (MBR) system, process piping, process pumps and motors, gauges and instruments, mixers, blowers, odor control systems, and all other process equipment and components necessary to provide a fully functional and operational wastewater treatment process in accordance with the Contract Documents.

This item shall include, but is not limited to, the following components:

• Membrane Bioreactor System (MBR)

• Membrane units, cassettes, supports, tanks

• Air scouring systems, permeate pumps, sludge pumps, and associated control panels

• Integration with SCADA and I&C systems (in coordination with Electrical and I&C pay item)

• Compliance with testing, commissioning, and performance requirements

• Process Pumps and Motors

• Submersible, centrifugal, or positive displacement pumps

• Sludge, return activated sludge (RAS), waste activated sludge (WAS), permeate, and chemical dosing pumps

• Process Piping and Valves

• Aboveground and in-structure process piping

• Air, sludge, mixed liquor, filtrate, permeate, and chemical lines

• Isolation valves, check valves, control valves, flow control devices

• Process analyzers and in-line monitoring equipment

• Tubing, fittings, stands, and supports

• Mixers and Aeration Systems

• Submersible or mechanical mixers

• Fine bubble or coarse bubble diffusers (if included)

• Aeration piping and air flow control valves

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-6

• Blowers and Odor Control

• Air blowers, silencers, bases, piping, and accessories

• Chemical scrubbers, biofilters, carbon units, ducting, fans, and instrumentation

• Startup and Commissioning

• Equipment alignment, lubrication, flushing, and hydrotesting

• Manufacturer assistance during installation and startup

• Operational testing and certification

• O&M manuals and operator training

a. Measurement for this item will be made on a lump sum basis, covering the complete installation of all process mechanical systems and equipment required to deliver a fully operational wastewater treatment process. No separate or additional measurement will be made for individual components or subsystems.

b. Payment shall be made at the lump sum price bid for “Process.” This price shall constitute full compensation for all labor, materials, equipment, services, coordination, and incidentals necessary to complete the installation and commissioning of all process equipment and appurtenances as shown in the Contract Documents. This includes all required testing, startup, training, O&M documentation, equipment supports, rigging, access platforms, and coordination with electrical and instrumentation systems. All work shall comply with applicable industry standards and specifications, including FDEP, NSF, AWWA, and manufacturer requirements.

4. Structural and Architectural (Bid Item No. 4)

The work under this item includes all labor, materials, equipment, formwork, reinforcement, testing, installation, and finish work required to construct the complete structural and architectural systems associated with the facilities at the wastewater treatment plant. This includes but is not limited to foundations, structural concrete, framing, walls, roofing systems, building envelopes, doors, windows, and architectural finishes in accordance with the Drawings and Specifications.

This item shall include, but is not limited to, the following:

• Structural Concrete Work

• Foundations, slabs, walls, grade beams, columns, and elevated slabs

• Reinforcing steel, waterstops, embedded items, and anchor bolts

• Concrete testing and quality control

• Structural Framing

• Structural steel members, cold-formed metal framing, or masonry wall systems as applicable

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-7

• Lintels, joists, beams, trusses, and related hardware

• Bracing, anchors, and structural connections

• Roofing Systems

• Roof framing and sheathing

• Installation of roofing membrane or panels (e.g., TPO, metal, etc.)

• Flashing, sealants, gutters, downspouts, and roof hatches

• Building Envelope and Exterior Finishes:

• Exterior wall construction (e.g., masonry, stucco, siding)

• Windows, louvers, and storefront systems

• Insulation and vapor barriers

• Interior Architectural Finishes

• Wall finishes, painting, ceilings, and trim

• Doors and hardware, frames, access panels, and fire-rated assemblies

• Flooring systems and base trim

• Bollards, access hatches, ladders, stairs, and walkways as required by structural drawings

• Fire stopping, caulking, and weatherproofing

• Coordination with other trades for embedded or mounted elements

• Code compliance with ADA, Florida Building Code, and applicable standards.

• Furniture and furnishings, and installing all furniture shown in the attached Attachment A.

a. Measurement for this item will be made on a lump sum basis, covering all structural and architectural work required to complete the building components shown in the Contract Documents. No separate measurement will be made for individual elements or components.

b. Payment shall be made at the lump sum price bid for “Structural and Architectural.” This price shall constitute full compensation for all labor, materials, equipment, formwork, rebar, erection, finishes, roofing, and incidentals necessary to complete the structural and architectural work for all project buildings and facilities as shown in the Drawings and specified in the Contract Documents. No additional payment will be made for temporary supports, shoring, or coordination with other trades unless specifically identified elsewhere. All work shall be performed in accordance with applicable codes and standards including the Florida Building Code, ACI, AISC, and other referenced industry standards.

5. Mechanical (Bid Item No. 5)

The work under this item includes all labor, materials, equipment, testing, insulation, accessories, and documentation required to furnish and install all mechanical systems serving the buildings at the wastewater treatment plant. This includes heating, ventilation, and air conditioning (HVAC) systems, domestic plumbing, and fire protection systems, as shown on the Drawings and as specified in the Contract Documents. This

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-8

item does not include process piping or buried yard piping, which are covered under separate items.

This item shall cover, but is not limited to, the following:

• Air handling units, split systems, exhaust fans, ductwork, dampers, and grilles

• Direct Digital Control (DDC) or programmable thermostats

• HVAC insulation and vibration isolation

• Condensate drainage and piping

• Start-up, testing, and balancing

• Domestic cold and hot water supply piping

• Sanitary waste and vent systems

• Floor drains, cleanouts, backflow preventers, water heaters

• Plumbing fixtures (sinks, lavatories, hose bibs, etc.)

• Associated hangers, supports, identification, and insulation

• Wet-pipe fire sprinkler system(s) as required

• Fire risers, sprinkler heads, piping, alarms, and valves

• Fire service connections and associated valves inside the building

• Coordination with alarm systems and code compliance inspections

• All mechanical coordination, equipment pads (if not provided separately), anchors, and seismic restraints

• Testing, certification, and flushing as required by applicable codes

• Commissioning and startup assistance for all systems

• Operations and maintenance manuals and training

a. Measurement for this item will be on a lump sum basis, and no separate or additional measurement will be made for individual systems or components. This includes all equipment, ductwork, pipe systems, insulation, testing, and accessories necessary to deliver fully functional and code-compliant mechanical systems for the plant buildings.

b. Payment shall be made at the lump sum price bid for “Mechanical.” This price shall constitute full compensation for all labor, materials, equipment, installation, testing, inspections, start-up, documentation, and related services required to furnish and install the HVAC, plumbing, and fire protection systems as shown in the Drawings and as specified.

No separate payment will be made for minor field modifications, coordination, or incidental items necessary to complete the mechanical work in full compliance with applicable codes and standards, including the Florida Building Code, NFPA, and ASHRAE guidelines.

6. Yard Piping (Bid Item No. 6)

The work under this item includes all labor, materials, equipment, excavation, backfill, testing, connections, and appurtenances required to furnish and install all yard piping

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-9

for the wastewater treatment plant. Yard piping includes all aboveground and underground pressure and gravity piping, associated valves, fittings, supports, thrust restraints, and necessary connections to structures, tanks, buildings, and equipment as shown on the Drawings and specified in the Contract Documents.

• Excavation, trenching, shoring, dewatering, and backfilling

• Installation of underground piping, including but not limited to:

• Potable water piping

• Reuse/irrigation water piping

• Plant service water piping

• Gravity and force main sewer piping

• Drainage and process piping

• Installation of aboveground yard piping

• All valves and fittings, including:

• Gate valves, check valves, air release valves, isolation valves

• Expansion joints, couplings, and reducers

• Pipe supports and anchoring systems

• Thrust blocks and restraint systems

• Concrete encasement or protection slabs, if required

• Connections to process equipment, tanks, basins, and buildings

• Flushing, disinfection, pressure testing, and leakage testing

• Labeling, identification, and locator tape/wire installation

• As-built documentation and GPS survey data, if applicable

a. Measurement for this item will be made on a lump sum basis and shall include the installation of all yard piping, valves, fittings, and associated work as defined above and shown in the Contract Documents. No separate or additional measurement will be made for individual pipe sizes, material types, or valve components.

b. Payment shall be made at the lump sum price bid for “Yard Piping.” This price shall be full compensation for all labor, materials, equipment, excavation, backfill, supports, appurtenances, fittings, testing, disinfection, and incidentals necessary to furnish and install a complete yard piping system in accordance with the Drawings and Specifications.

No additional compensation will be made for trench safety systems, over-excavation, groundwater control, or modifications due to field conditions unless specifically provided for by Change Order.

7. Electrical and Instrumentation Improvements (Bid Item No. 7)

The work under this item includes all labor, materials, equipment, testing, startup, and coordination required to furnish and install the complete electrical and instrumentation

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-10

systems for the new wastewater treatment plant and modifications to the existing wastewater treatment plant. This includes but is not limited to power distribution, grounding, lighting, control systems, conduit and wiring, electrical panels, motor control centers (MCCs), programmable logic controllers (PLCs), instrumentation devices, signal wiring, SCADA interface, and all other electrical and control components necessary to render the plant fully operational.

• Main power supply and service entrance equipment

• Transformers, switchgear, panelboards, and MCCs

• Power and control conduit and wire (aboveground and underground)

• Grounding and bonding systems

• Interior and exterior lighting systems

• Lightning protection (if required)

• PLC panels, RTUs, I/O modules, and network components

• All field instrumentation, including pressure transmitters, level sensors, flow meters, analyzers, etc.

• Local control stations and junction boxes

• SCADA system integration, including cabling, terminations, programming support, and testing

• Signal wiring, terminations, and labeling

• Testing, commissioning, and startup of all electrical and instrumentation systems

• Spare parts, O&M manuals, and as-built documentation

• Coordination with utility provider, general contractor, and other trades

a. Measurement for this item will be on a lump sum basis. No separate or additional measurement will be made for individual components or sub-elements included under this work. Progress payments may be made in accordance with the approved Schedule of Values and as determined by the Engineer based on work completed.

b. Payment shall be made at the lump sum price bid for “Electrical and

Instrumentation.” This price shall be full compensation for all labor, materials, tools, equipment, testing, coordination, and incidental work required to complete the electrical and instrumentation systems in full accordance with the Contract Documents. No separate payment will be made for field testing, startup, or commissioning unless specifically noted elsewhere in the specifications. All work shall be performed to meet local, state, and national codes, including but not limited to NEC, NFPA, NEMA, and applicable sections of the Florida Building Code

Alt-1. Reclaimed Water System and Storage Tanks (Bid Item No. Alt-1)

The work under this bid alternate includes all labor, materials, equipment, installation, testing, and commissioning necessary to furnish and install a complete reclaimed water pump station

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-11

and storage system, including storage tanks, booster pumps, associated process piping, electrical and control systems, and appurtenant work, as indicated in the Drawings and Specifications.

This item is to be bid as an alternate to the base bid. It may or may not be included in the final Contract scope at the discretion of the Owner, depending on funding and project priorities.

This bid alternate shall include, but is not limited to:

• Reclaimed Water Storage Tanks

• Furnish and install the concrete storage tanks

• Site preparation, foundations, concrete pads, and anchor systems

• Tank access ladders, hatches, vents, overflow piping, and instrumentation

• Pump Station and Booster Pumps

• Vertical turbine or centrifugal booster pumps, motors, and bases

• Valves, manifolds, and supports

• Piping connections to reuse distribution systems

• Process Piping:

• Aboveground and underground piping

• Pressure relief valves, isolation valves, drain lines, flow meters

• Pipe supports, thrust blocks, and signage

• Electrical and Controls:

• Power supply and distribution equipment

• Conduit, wire, grounding, lighting, and SCADA interface

• Lightning protection and surge suppression

• Testing and Commissioning:

• Pressure testing, performance testing, and startup assistance

• Manufacturer oversight and training for Owner personnel

• O&M manuals and as-built documentation

a. Measurement for this item will be made on a lump sum basis, encompassing the full scope of work for the reclaimed water pump station and storage system as described above and as shown in the Contract Documents. No separate or additional measurement will be made for individual components or features.

b. Payment shall be made at the lump sum price bid for “Bid Alternate –

Reclaimed Water System and Storage Tanks.” This price shall be full compensation for all work required to furnish, install, test, and place into service the reclaimed water system components, including all site preparation, foundations, equipment, piping, electrical work, coordination, and documentation. This item will be considered a dedicated alternate bid item, and its inclusion in the final scope will be determined by the Owner based on project funding and priorities. If selected, it shall be incorporated into the Contractor’s Work under the terms of the awarded Contract.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012200-12

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

Tyler.Wainright Text Box

012200 ATTACHMENT A

COLLIER COUNTY CHANGE ORDER PROCEDURES

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012663-1

SECTION 012663

CHANGE ORDER PROCEDURES

A. Promptly implement change order procedures.

1. Provide full written data required to evaluate changes.

2. Maintain detailed records of work done on a time and material/force account basis.

3. Provide full documentation to Engineer on request.

B. Designate in writing the member of Contractor's organization:

1. Who is authorized to accept changes in the Work?

2. Who is responsible for informing others in the Contractor's employ of the authorization of changes in the Work?

C. Owner will designate in writing the person who is authorized to execute change Orders.

1.02 RELATED REQUIREMENTS

A. Section 012900: Application for Payment.

B. Section 012973: Schedule of Values.

C. Section 013216: Construction Schedules.

D. Section 017700: Contract Closeout.

1.03 DEFINITIONS

A. Change Order: See General Conditions.

B. Work Directive: A written order to the Contractor, signed by Owner and Engineer, which amends the Contract Documents as described, and authorizes Contractor to proceed with a change which affects the Contract Sum or the Contract Time, for inclusion in a subsequent Change Order.

C. Field Order: A written order, instructions, or interpretations, signed by Engineer making minor changes in the Work not involving a change in Contract Sum or Contract Time.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012663-2

1.04 PRELIMINARY PROCEDURES

A. Owner or Engineer may initiate changes by submitting a Proposal Request to Contractor. Request will include:

1. Detailed description of the change, products, and location of the change in the Project.

2. Supplementary or revised Drawings and Specifications.

3. The projected time span for making the change, and a specific statement as to whether overtime work is, or is not, authorized.

4. A specific period of time during which the requested price will be considered valid.

5. Such request is for information only, and is not an instruction to execute the changes, nor to stop Work in progress.

B. Contractor may initiate changes by submitting a written notice to Engineer, containing:

1. Description of the proposed changes.

2. Statement of the reason for making the changes.

3. Statement of the effect on the Contract Sum and the Contract Time.

4. Statement of the effect on the work of separate contractors.

5. Documentation supporting any change in Contract Sum or Contract Time, as appropriate.

1.05 WORK DIRECTIVE

A. In lieu of Proposal Request, Engineer may issue a work directive for Contractor to proceed with a change for subsequent inclusion in a Change Order.

B. Directive will describe changes in the Work, both additions and deletions, with attachments of revised Contract Documents to define details of the change and will designate the method of determining any change in the Contract Sum and any change in Contract Time.

C. Owner and Engineer will sign and date the Work Directive as authorization for the Contractor to proceed with the changes.

1.06 DOCUMENTATION OF PROPOSALS AND CLAIMS

A. Support each quotation for time and material price proposals, with sufficient substantiating data to allow Engineer to evaluate the quotation.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012663-3

B. On request provide additional data to support time and cost computations:

1. Labor required.

2. Equipment required.

3. Products required.

a. Recommended sources of purchase and unit cost.

b. Quantities required.

4. Taxes, insurance, and bonds.

5. Credit for work deleted from Contract, similarly documented.

6. Overhead and profit.

7. Justification for any change in Contract Time.

C. Support each claim for additional costs, and for work done on a time-and-material basis, with documentation as required, with additional information:

1. Name of Owner's authorized agent who ordered the work, and date of the order.

2. Dates and times work were performed, and by whom.

3. Time record, summary of hours worked, and hourly rates paid.

4. Receipts and invoices for:

a. Equipment used, listing dates and times of use.

b. Products used, listing of quantities.

c. Subcontractors.

1.07 PREPARATION OF CHANGE ORDERS

A. Engineer will prepare each Change Order.

B. Owner's Form, per example provided by the Engineer.

C. Change Order will describe changes in the Work, both additions and deletions, with attachments of revised Contract Documents to define details of the change.

D. Change Order will provide an accounting of the adjustment in the Contract Sum and in the Contact Time.

SUPPLEMENTAL TECHNICAL SPECIFICATIONS 012663-4

1.08 TIME AND MATERIAL/FORCE ACCOUNT CHANGE ORDER/CONSTRUCTION CHANGE

AUTHORIZATION

A. Engineer and Owner will issue a Construction Change Authorization directing Contractor to proceed with the changes.

B. At completion of the change, Contractor shall submit itemized accounting and supporting data as provided in the Article "Documentation of Proposals and Claims" of this Section.

C. Engineer will determine the allowable cost of such work, as provided in General Conditions.

D. Engineer will sign and date the Change Order to establish the change in Contract Sum and in Contract Time.

E. Owner and Contractor will sign and date the Change Order to indicate their agreement therewith.

1.09 CORRELATION WITH CONTRACTOR'S SUBMITTALS

A. Periodically revise Schedule of Values and Request for Payment forms to record each change as a separate item of Work, and to record the adjusted…