Stack Height Increase and Structural Modification

This subcontract involves the physical alteration of the S-1 Sulfuric Acid Plant stack located in Martinez, California, for projects under the Bay Area Air Quality Management District. The primary scope of work includes increasing the existing stack height and relocating test ports to ensure full compliance with regulatory requirements and local building codes. The contractor is responsible for maintaining structural integrity throughout the modification process, utilizing industrial steel materials, cranes, and specialized welding equipment. The project aims to deliver a modified, taller stack that meets all Air District specifications. This work is categorized under NAICS code 238990 and is scheduled for posting on August 12, 2026. The final deliverable is a structurally sound stack with correctly positioned test ports that satisfy all environmental and safety mandates.