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Unofficial Notice of Invitation to Bid (NIB)
Ukiah City is seeking bids from qualified and interested contractors for the following project titled, Enclosed Landfill Gas Ground Flare Station, identified under Solicitation ID: E41141. Work is to be performed near 300 Seminary Ave, Ukiah, CA 95482, USA in Mendocino County.
General Project Description
This project involves the fabrication and delivery of a unitized, modular, enclosed landfill gas (LFG) ground flare station. The flare station is designed to incinerate LFG at a closed municipal solid waste facility. The scope includes the supply of the flare unit, a gas handling system, an interconnecting flow straightening pipe assembly, and a comprehensive control system, all pre-piped and pre-wired for minimal field installation. The installation and connection to the power source and LFG collection system components are the responsibility of others.
General Bid Items
- Quantity: 1 Unit: LS Work Item: Fabricate and deliver unitized, modular LFG Ground Flare Station.
- Quantity: 1 Unit: EA Work Item: Enclosed LFG Ground Flare, including automatic block valve, flame arrester, burner unit, flare stack, interconnecting piping, isolation valves, internal electrical wiring, Propane Fueled Pilot Gas Inlet Nozzle (1/2" NPT), stainless steel insulation retainer band, weather shield, heat shield, multiple small gas port primary air mixed burner assembly (304L/316L stainless steel construction, 2,700°F rating refractory), 3 Type K thermocouples, Honeywell or Engineer approved Flame Safeguard Controller, Honeywell or Engineer approved U.V. Scanner, Propane Pilot System (40,000 Btu/hr), Total Combustion and Quenching Air Control (motor-operated, 12 gauge, galvanized steel damper(s) with 3/4" shaft), Flare Temperature Controller (with PLC integration), Electronic Spark Ignition (5,000 Volt), Flare Anchor System (HILTI HIT C-100), high performance/heat resistant primer/finish coat over sand-blasted metal, Ignition Transformer Enclosure (NEMA 4), Flare Junction Enclosure/Main Control Panel (NEMA 4), Purge Blower Assembly, and Ladder (OSHA standards).
- Quantity: 1 Unit: EA Work Item: Gas Handling System, including LFG blowers, demister filter, process valving, process piping, and system structural skid (ASTM A-36 structural members, painted, for C BC 100 MPH wind overturn loading and zone 4 seismic loading).
- Quantity: 1 Unit: EA Work Item: Two (2) LFG Blowers (11 to 110 SCFM, 7.5 HP, 60 hertz, 3 phase, 460 volt, TEFC enclosure, squirrel-cage induction motor, 1.15 service factor, VFD controlled, vibration sensor, thermocouple temperature sensors).
- Quantity: 1 Unit: EA Work Item: Demister Filter (with polypropylene fiber pad elements, 2" IPS pipe coupling for condensate removal, 1½" pipe couplings for pressure drop monitoring, Dwyer Capsuhelic or Engineer approved differential pressure gauge, ultrasonic level switch for high condensate level).
- Quantity: AS REQUIRED Unit: - Work Item: Butterfly Valves (gear operated, lug type, cast iron bodied with BUNA resilient seats, nickel plated disc and shaft, 25 PSIG minimum pressure).
- Quantity: AS REQUIRED Unit: - Work Item: Flexible Connectors (stainless steel corrugated, ANSI flanged).
- Quantity: 1 Unit: EA Work Item: Interconnecting Flow Straightening Pipe Assembly, including ANSI 125# flanged connections, flow monitoring port(s), flow measurement device (LFG applications, automatically corrects for temperature/pressure, 4-20 maDC output), and flexible coupling device.
- Quantity: 1 Unit: EA Work Item: Control System (NEMA 4 compliant control panel with weather shield, UL approved, load center, PLC based control center with Ethernet connection, surge protection devices, operator interface panel (Touch Screen), back-up battery pack, automatic restarting capability for power outages, 120 volt AC duplex utility outlet, and safety systems).
- Quantity: 1 Unit: EA Work Item: Control Panel Face Mounted Devices, including Auto Dialing Alarm System (ADAS), load center circuit breakers, Test/Off/Auto switches for pilot ignition, blowers, system, and automatic block valve, Flame failure reset, and Alarm/shutdown message annunciation via Touch Screen Display.
NAICS Classification
NAICS 333414 – Heating, Ventilation, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing, NAICS 237990 – Other Heavy and Civil Engineering Construction, NAICS 541330 – Engineering Services
Records and Due Date
This bid opportunity was entered into BidAmerica on December 5, 2025, and was last updated on December 24, 2025. All bids and/or proposals are due on January 7, 2026.
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All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by Ukiah City. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from Ukiah City prior to bidding.