Repair of Diffuser System in Aeration Basin #3 at the GWRP

The City of Mesa issued a sole‑source procurement to repair the diffuser system in Aeration Basin #3 of its Ground‑Water Replenishment Plant. The contract is valued at $180,000 and was awarded to Environmental Dynamics International after a seven‑day window for competing bids elapsed without response. This project is highly specific to water‑treatment equipment repair, making it relevant only to firms that specialize in diffuser or aeration system maintenance and related engineering services. • Scope: Repair of diffuser system in Aeration Basin #3 (no additional construction or treatment work). • Procurement method: Sole‑source; no competitive bidding after a 7‑day response period. • Value: $180,000 lump‑sum award to Environmental Dynamics International. • Timeline: Intent to award notice on April 30 2025; award finalized May 13 2025.