SLED Opportunity · INDIANA · GARY SANITARY DISTRICT
AI Summary
Request for quotation for installation of a complete HVAC system at Gary Sanitary District's 27th & Chase facility drywell. Includes mechanical, electrical, structural, and controls work in a hazardous wastewater environment with strict safety and environmental compliance requirements.
Project: 27th & Chase Drywell – HVAC Installation
Location: Gary Sanitary District – 27th & Chase Facility
Requesting Department: Operations / Facilities
Requested By:David L Walton
Date: March 20, 2026
1. PROJECT OVERVIEW
This requisition is for the installation of a complete HVAC system within the drywell structure at the 27th & Chase facility. The work includes mechanical, electrical, structural, and controls integration in a high-risk, gas-prone wastewater environment.
All work shall comply with OSHA, IDEM, NEC, and applicable local/state codes, including hazardous location requirements.
2. SCOPE OF WORK
A. HVAC EQUIPMENT INSTALLATION
Install (1) 5-ton air handler unit with electric heat kit (equipment provided by Gary Sanitary District)
Install (1) 5-ton condenser unit (provided by Gary Sanitary District)
Full system integration and operational setup
B. ELECTRICAL INSTALLATION
Install dedicated 50-amp circuit for air handler heat kit
Install 30-amp electrical service for condenser unit (120/24/240 VAC)
Provide and install:
Electrical disconnects
Breakers
Safety shutoffs
Control transformers and wiring
All electrical components shall be:
Explosion-proof / hazardous-location rated (NEMA compliant)
Suitable for environments containing:
Hydrogen Sulfide (H₂S)
Oxygen-enriched atmospheres
Lower Explosive Limit (LEL) gases
Carbon Monoxide (CO)
C. MECHANICAL & REFRIGERATION WORK
Install refrigerant line set, including:
Proper sizing
Insulation
Protection and routing
Install condensate drain system, including:
Proper slope
Corrosion-resistant piping
Safe discharge routing
D. CONTROLS & THERMOSTAT
Install Wi-Fi-enabled thermostat (provided by Gary Sanitary District)
Complete:
Low-voltage wiring
Control integration
System programming and commissioning
E. FRESH AIR INTAKE SYSTEM
Install dedicated fresh air intake:
Routed to exterior
Properly sealed and protected
Designed to prevent gas infiltration
F. STRUCTURAL & INSTALLATION COMPONENTS
Equipment mounting and installation including:
Bracketing
Anchoring systems
Vibration isolation
Perform masonry penetrations as required
Seal and reinforce all penetrations per code
G. ROOF & DEMOLITION WORK
Remove (2) existing RTU units
Close and seal existing roof curb openings:
Weatherproofing
Structural integrity restoration
H. STARTUP & COMMISSIONING
Complete full system startup and testing
Verify:
Cooling performance
Electrical operation
Control functionality
Provide commissioning documentation
3. ENVIRONMENTAL & SAFETY REQUIREMENTS
This project is located in a classified hazardous wastewater environment, including drywell and wet well areas.
A. HAZARDOUS LOCATION REQUIREMENTS
All equipment and electrical components must meet:
Explosion-proof standards
NEMA-rated enclosures for hazardous gases
Contractor must verify classification requirements before installation
B. OSHA COMPLIANCE
Confined space entry procedures required
Continuous gas monitoring (H₂S, LEL, O₂, CO)
Lockout/Tagout (LOTO) required
PPE for hazardous atmospheres mandatory
C. IDEM REQUIREMENTS
All work within drywell and wet well environments must comply with:
Indiana Department of Environmental Management (IDEM) standards
Contractor must ensure:
No contamination of wastewater systems
Proper handling of condensate and drainage
Protection of process integrity
4. CONTRACTOR RESPONSIBILITIES
Provide all labor, supervision, tools, and incidental materials
Coordinate with Gary Sanitary District personnel
Maintain site safety and compliance at all times
Protect all existing infrastructure and systems
Remove debris and maintain clean worksite
5. SPECIAL CONSIDERATIONS (CRITICAL)
This is a high-gas, volatile environment—failure to use proper rated equipment will result in rejection
System must be designed to prevent ignition sources
Downtime and disruption to operations must be minimized
All penetrations and installations must maintain gas-tight integrity
6. DELIVERABLES
Fully installed and operational HVAC system
Electrical and control system integration
Startup and commissioning report
As-built documentation (if required)
Project: 27th & Chase Drywell – HVAC Installation Location: Gary Sanitary District – 27th & Chase Facility Requesting Department: Operations / Facilities Requested By: [Your Name / Title] Date: March 20, 2026
1. PROJECT OVERVIEW
This requisition is for the installation of a complete HVAC system within the drywell structure at the 27th & Chase facility. The work includes mechanical, electrical, structural, and controls integration in a high-risk, gas-prone wastewater environment.
All work shall comply with OSHA, IDEM, NEC, and applicable local/state codes, including hazardous location requirements.
2. SCOPE OF WORK A. HVAC EQUIPMENT INSTALLATION
Install (1) 5-ton air handler unit with electric heat kit (equipment provided by Gary Sanitary District)
Install (1) 5-ton condenser unit (provided by Gary Sanitary District)
Full system integration and operational setup
B. ELECTRICAL INSTALLATION
Install dedicated 50-amp circuit for air handler heat kit
Install 30-amp electrical service for condenser unit (120/24/240 VAC)
Provide and install:
Electrical disconnects
Breakers
Safety shutoffs
Control transformers and wiring
All electrical components shall be:
Explosion-proof / hazardous-location rated (NEMA compliant)
Suitable for environments containing:
Hydrogen Sulfide (H₂S)
Oxygen-enriched atmospheres
Lower Explosive Limit (LEL) gases
Carbon Monoxide (CO)
C. MECHANICAL & REFRIGERATION WORK
Install refrigerant line set, including:
Proper sizing
Insulation
Protection and routing
Install condensate drain system, including:
Proper slope
Corrosion-resistant piping
Safe discharge routing
D. CONTROLS & THERMOSTAT
Install Wi-Fi-enabled thermostat (provided by Gary Sanitary District)
Complete:
Low-voltage wiring
Control integration
System programming and commissioning
E. FRESH AIR INTAKE SYSTEM
Install dedicated fresh air intake:
Routed to exterior
Properly sealed and protected
Designed to prevent gas infiltration
F. STRUCTURAL & INSTALLATION COMPONENTS
Equipment mounting and installation including:
Bracketing
Anchoring systems
Vibration isolation
Perform masonry penetrations as required
Seal and reinforce all penetrations per code
G. ROOF & DEMOLITION WORK
Remove (2) existing RTU units
Close and seal existing roof curb openings:
Weatherproofing
Structural integrity restoration
H. STARTUP & COMMISSIONING
Complete full system startup and testing
Verify:
Cooling performance
Electrical operation
Control functionality
Provide commissioning documentation
3. ENVIRONMENTAL & SAFETY REQUIREMENTS
This project is located in a classified hazardous wastewater environment, including drywell and wet well areas.
A. HAZARDOUS LOCATION REQUIREMENTS
All equipment and electrical components must meet:
Explosion-proof standards
NEMA-rated enclosures for hazardous gases
Contractor must verify classification requirements before installation
B. OSHA COMPLIANCE
Confined space entry procedures required
Continuous gas monitoring (H₂S, LEL, O₂, CO)
Lockout/Tagout (LOTO) required
PPE for hazardous atmospheres mandatory
C. IDEM REQUIREMENTS
All work within drywell and wet well environments must comply with:
Indiana Department of Environmental Management (IDEM) standards
Contractor must ensure:
No contamination of wastewater systems
Proper handling of condensate and drainage
Protection of process integrity
4. CONTRACTOR RESPONSIBILITIES
Provide all labor, supervision, tools, and incidental materials
Coordinate with Gary Sanitary District personnel
Maintain site safety and compliance at all times
Protect all existing infrastructure and systems
Remove debris and maintain clean worksite
5. SPECIAL CONSIDERATIONS (CRITICAL)
This is a high-gas, volatile environment—failure to use proper rated equipment will result in rejection
System must be designed to prevent ignition sources
Downtime and disruption to operations must be minimized
All penetrations and installations must maintain gas-tight integrity
6. DELIVERABLES
Fully installed and operational HVAC system
Electrical and control system integration
Startup and commissioning report
As-built documentation (if required)
2 Year service warranty and Schedule Service required
(provide detail here)
Please download the below documents, complete, and upload.
If applicable
SLED stands for State, Local, and Education. These are solicitations issued by state governments, counties, cities, school districts, utilities, and higher education institutions — as opposed to federal agencies.
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