Statement of Work (SOW)

Maintenance Base and Locks Vehicle Gate Replacement

1. Background Information:

The Great Lakes St. Lawrence Seaway Development Corporation (GLS) is a wholly owned U.S. Government corporation within the U.S. Department of Transportation. GLS operates and maintains the U.S. portion of the St. Lawrence Seaway between Lake Ontario and Montreal, Quebec.

GLS maintains multiple vehicle access gates at Eisenhower and Snell Locks that provide controlled access to lock facilities, operational areas, and maintenance zones. Several existing vehicle gates have reached the end of their service life and require replacement to maintain security, operational reliability, and safety.

GLS requires removal and replacement of eight (8) existing vehicle gate systems with new, fully functional, automatic horizontal cantilever sliding gate and operator systems that meet current safety, operational, and performance requirements.

2. Mission/Purpose

GLS is seeking a qualified contractor to remove and replace existing vehicle gate systems at Eisenhower and Snell Locks with new, fully functional, automatic horizontal cantilever sliding gate and operator systems that meet current safety, operational, and performance requirements.

3. Scope:

The Contractor shall provide all labor, materials, equipment, tools, supervision, and incidentals necessary to remove existing horizontal sliding gates and associated components and furnish and install eight (8) new horizontal sliding gate systems, including gates, operators, controls, safety devices, electrical components, and accessories.

The work includes:

Field verification of existing conditions, dimensions, and utility connections for each gate location

Removal and proper disposal of existing gates, operators, controls, and associated hardware

Design, fabrication, and installation of eight (8) new horizontal cantilever sliding gates

Installation of new automatic gate operator systems with all required safety, control, and detection devices

Electrical connections, testing, and commissioning

Training, documentation, and closeout submittals

Gate replacement locations include:

Lock Gate Number Gate Opening Size (ft)

Maintenance Base M1 24’ 4”

Eisenhower E1 24’

Eisenhower E2 23’

Eisenhower E3 30’

Eisenhower E4 16’

Snell S1 24’

Snell S2 18’

Snell S4 20’

The Contractor shall be responsible for all site verification, coordination, and adjustments necessary to ensure proper fit and operation of each installed system.

The Contractor shall provide on-site training to Government personnel on operation, safety features, and routine maintenance of the gate systems.

The Contractor shall perform full system commissioning including functional testing of all mechanical, electrical, and safety components.

4. Technical Requirements

The installed systems shall meet or exceed the following requirements. Equivalent systems are acceptable provided they meet all stated performance requirements. See attached print SLS-340-97 for general layout of gates.

4.1 Horizontal Sliding Gates

Type II Cantilever Slide Gate, Class 2, with internal roller assemblies.

Gate opening size: See Schedule of Gates above.

Gate Height: 84”

Zinc-coated steel construction with finish to match existing fence framework.

Gate posts: Round tubular steel complying with ASTM F1184.

Gate frame and bracing: Tubular steel or aluminum.

Welded frame corners with 3/8-inch adjustable truss rods for panels 60 inches or wider.

Gate posts and frame end members shall extend 12 inches above the top of chain-link fabric to accommodate barbed wire assemblies.

Chain-Link Fence Fabric:

a. 9-gauge wire diameter

b. Mesh Size: 2 inches

c. Zinc-Coated Fabric: ASTM A392, Type II, Class 1, 1.2 oz./sq. ft. with zinc coating applied before weaving

d. Coat selvage ends of metallic-coated fabric before the weaving process with manufacturer’s standard clear protective coating.

4.2 Hardware and Track

Manufacturer’s standard overhead track, supports, bracing, and accessories engineered for the gate size and weight.

Hangers, roller assemblies, and stops fabricated from galvanized steel or Grade 319 aluminum-alloy castings with stainless-steel fasteners.

Manufacturer’s standard internal locking device.

4.3 Gate Operator System

Proposed system shall be compatible with existing electrical service

Factory-assembled, automatic, heavy-duty commercial/industrial slide gate operator.

UL 325 listed and labeled.

Minimum gate speed: 60 feet per minute.

Maximum gate weight: 1000 pounds.

Frequency of use: Minimum 30 cycles per hour.

Operating type: Wheel and rail or roller chain with manual release.

Drive type: V-belt and worm gear or chain-and-sprocket reducers.

Motor complying with NEMA MG 1.

Continuous duty at 40 °C ambient temperature.

Service factor: 1.15.

Minimum 2 hp motor.

Electrical service: 208 V AC, 3 phase.

Controls housed in NEMA 250 Type 4 enclosure, physically separated from drive mechanism.

Vehicle loop detector system with adjustable sensitivity and automatic closing timer.

Vehicle presence detector using infrared emitter/receiver technology.

Obstruction detection via internal sensing, safety edges on all gate edges and posts, and photoelectric/infrared sensors.

Adjustable limit switches for fully open and closed positions.

Emergency manual release allowing gate operation without special tools and disconnecting control power during manual operation.

Digital microprocessor control with surge protection.

Automatic closing timer and open override circuit.

Reversal time delay and maximum run timer.

24-hour programmable clock timer.

Audio/visual warning system with strobe and alarm.

Battery backup system with fail-safe and fail-secure operation.

Acceptance Criteria:

Gate shall open and close smoothly without binding, excessive vibrations, or abnormal noise

Meets minimum speed (60 ft/min)

Safety systems fully functional (UL 325 compliance verified)

All detection systems operational and tested

No exposed sharp edges or hazards

The Contractor shall perform a full operational test witnessed by the Government COR

System works under normal and backup power

5. Period of Performance/Place of Performance:

The Contractor shall complete all work within 90 calendar days from Notice to Proceed (NTP).

Work will be performed at the GLS Maintenance Base, Eisenhower and Snell Locks, located in Massena, NY 13662.

6. Deliverables:

Tasks Deliverable Due

Project Plan Within 5 days of Award

Test Reports At completion

O&M Manuals At project completion

Training At project completion

CLIN 0001 Mobilization Within 30 days of NTP

CLIN 0002 Replacement of Gate and Operator M1

CLIN 0003 Replacement of Gate and Operator E1

CLIN 0004 Replacement of Gate and Operator E2

CLIN 0005 Replacement of Gate and Operator E3

CLIN 0006 Replacement of Gate and Operator E4

CLIN 0007 Replacement of Gate and Operator S1

CLIN 0008 Replacement of Gate and Operator S2

CLIN 0009 Replacement of Gate and Operator S4

CLIN 0010 Demobilization (includes disposal of all removed gates and operators and site restoration)

7. Reference Documents:

SLS-340-97 GLS MAINTENANCE BASE, AUTOMATIC VEHICLE GATE, GENERAL LAYOUT