1-FY27 Crushing Operations Technical Specs.pdf

Technical Specifications

Part 1 - General

1.1 Scope of Work.

The Contractor shall furnish all labor, supervision, equipment, fuel, maintenance, testing, dust-control measures, traffic control within the work area, and incidental items necessary to crush and stockpile City-owned asphalt and concrete rubble at the City of St. George Reuse Center.

1.2 Material Requirements.

All crushed material shall conform to the City of St. George Standard Specifications for Design and Construction for untreated road base, ¾-inch minus, unless otherwise directed in writing by the City. The finished material shall be uniformly graded, suitable for use as road base, and free of deleterious material.

1.3 Crushing Equipment.

The Contractor shall provide and operate an impact-type crusher suitable for processing asphalt and concrete rubble into the specified finished product.

1.4 Stacking and Stockpiling.

The Contractor shall provide a stacker conveyor belt to stockpile finished material. Stockpiles shall be maintained in an orderly manner, with adequate separation between material types and sufficient access for City inspection and loading operations.

1.5 Sequencing and Separation of Materials.

The Contractor shall crush all asphalt material before beginning concrete crushing operations.

Asphalt rubble and concrete rubble shall be maintained in separate stockpiles.

1.6 Permits, Compliance, and Testing Costs.

The Contractor is responsible for obtaining and maintaining all permits, approvals, certifications, monitoring, inspections, and testing required for its operations. All costs for air-quality compliance, dust monitoring, noise monitoring, material testing, and related documentation shall be included in the Contractor’s unit price, unless specifically identified otherwise in the contract.

1.8 Site Cleanliness and Safety.

A. The Contractor shall maintain the work area in a clean, orderly, and safe condition throughout the work. Waste, debris, spilled material, and other obstructions shall be removed promptly.

B. The Contractor shall conduct daily housekeeping activities and shall clean up the work area upon completion of crushing operations.

C. The Contractor shall ensure that all equipment, stockpiles, conveyors, access routes, and work areas are maintained in a safe condition.

D. At the end of each workday, the Contractor shall secure all equipment and the work area to prevent unauthorized access, hazards to City staff or the public, and accidental release of material.

E. Crushing operations, work sequencing, stockpile locations, and access routes may be adjusted by City as necessary to meet operational, safety, air-quality, noise, material-quality, or site-management objectives.

1.9 Regulatory Compliance.

The Contractor shall perform all work in accordance with all applicable federal, state, and local safety, health, environmental, and occupational requirements, including applicable Occupational

Safety and Health Administration (OSHA) and Mine Safety and Health Administration (MSHA) requirements.

1.10 Site Safety Representative.

The Contractor shall designate a qualified on-site safety representative with authority to stop work and correct unsafe conditions. The safety representative shall be available during all crushing operations.

1.11 Required Inspections and Monitoring.

A. Before crushing operations begin, the Contractor shall inspect all crushing, screening, conveying, and support equipment following setup. The inspection shall verify that equipment guards, emergency stops, access controls, fire extinguishers, warning devices, and other required safety features are in place and operational.

B. The Contractor shall conduct at least two (2) additional silica-dust monitoring events during the crushing operation. Monitoring shall include representative sampling during active crushing conditions and documentation of sampling locations, dates, operating conditions, results, and corrective actions, if any.

C. The Contractor shall conduct at least two (2) noise-monitoring events during crushing operations. Noise-monitoring records shall identify the date, time, equipment in operation, monitoring location, measured noise level, and any corrective action taken.

D. The Contractor shall conduct additional inspections, testing, or monitoring when required by the City or when operating conditions indicate that additional controls may be necessary.

E. The Contractor shall provide copies of all inspection reports, material test results, air-monitoring records, noise-monitoring records, and corrective-action documentation to the

City within two (2) business days of completion or receipt.

1.12 Location of Work.

All crushing operations shall be performed at the City of St. George Reuse Center, located at:

575 East Brigham Road

St. George, Utah

The Contractor shall confine operations to areas designated by the City.

Part 2 – Measurement and Payment

Payment shall be based on the number of tons of source material stockpiled on-site before crushing, as measured using the State-certified scale at the Reuse Center. The Contractor shall coordinate all load weighing with the City and provide weight tickets and daily production records to the City.

Item

No.

Pay Item Unit Description

1 Mobilization Lump Sum Mobilization, setup, permits, equipment delivery and removal, and final site cleanup.

2 Crush and Stockpile

Asphalt Rubble

Ton Process asphalt rubble into specified recycled aggregate material; includes crushing, screening, stacking, dust suppression, quality control, and all incidentals.

3 Crush and Stockpile

Concrete Rubble

Ton Process concrete rubble into untreated road base, ¾-inch minus; includes crushing, screening, removal of incidental reinforcing steel, stacking, dust suppression, quality control, material testing, and all incidentals.

Part 3 - Quality Control and Material Acceptance

3.1 Contractor Quality Control.

The Contractor shall establish and maintain a quality-control program sufficient to ensure that the finished product consistently meets City specifications for untreated road base, ¾-inch minus.

3.2 Sampling and Testing.

The Contractor shall sample and test finished crushed material no less than once per production day. Additional samples shall be taken when there is a change in source material, crusher settings, screening configuration, material appearance, gradation, or as directed by the City.

3.3 Nonconforming Material.

Material that does not meet City specifications shall be identified, segregated, and reprocessed or removed from the site at the Contractor’s expense. The Contractor shall not incorporate nonconforming material into an accepted stockpile.

3.4 City Inspection and Acceptance.

The City reserves the right to inspect operations, observe sampling and testing, obtain independent samples, reject nonconforming material, suspend operations for unsafe or noncompliant conditions, and require corrective action before work resumes.

Part 4 - Crushing Production and Operating Plan

4.1 Production Rate.

The Contractor shall state its proposed minimum average production rate in tons per hour and tons per day. Production rates shall account for normal setup, crushing, screening, stockpiling, quality-control testing, dust-control activities, and routine equipment maintenance.

4.2 Dust Control and Abatement.

The Contractor shall submit a written dust-control and abatement plan before mobilization. At a minimum, the plan shall identify:

A. Water application methods and anticipated water demand;

B. Dust-suppression equipment installed on crushing, screening, and conveying equipment;

C. Methods for controlling fugitive dust from material transfer points, stockpiles, haul routes, and vehicle traffic;

D. Procedures for modifying or suspending operations during high-wind conditions or when visible dust cannot be adequately controlled; and

E. The person responsible for monitoring and implementing dust-control measures.

The City will provide water at the Reuse Center. The Contractor shall provide all hoses, pumps, spray bars, fittings, application equipment, and labor necessary to use the available water effectively.

4.3 Noise Control.

The Contractor shall submit a written noise-control plan before mobilization. The plan shall identify the equipment to be used, anticipated operating hours, equipment placement, noise-reduction measures, monitoring locations, and procedures for responding to excessive noise levels or complaints.

4.4 Personnel and Equipment List.

Before mobilization, the Contractor shall submit a list of all personnel and equipment proposed for the project. The submittal shall include:

A. On-site superintendent contact information;

B. Designated safety representative;

C. Equipment operators and key support personnel;

D. Crusher make, model, capacity, and emissions-control information;

E. Screens, conveyors, stackers, magnets, loaders, water trucks, generators, and support equipment;

F. Dust-control and noise-control equipment; and

G. Emergency-response equipment and fire-suppression resources.

No substitution of major crushing, screening, dust-control, or safety equipment shall be made without prior approval from the City.