Queen Anne's County Civicplus #SAN 26-01

Queen Anne's County Solicits Bids for Sudlersville Wastewater Treatment Plant ENR Upgrades

Queen Anne's County is seeking bids for a major upgrade to the Sudlersville Wastewater Treatment Plant to enhance nitrogen removal capabilities. - Government Buyer: - County Commissioners of Queen Anne's County, through the Queen Anne's County Sanitary District and Department of Public Works - Project Scope: - Construction of a cast-in-place concrete Post Anoxic Reactor (PAR) tank - Rehabilitation of the existing Biolac reactor, including robotic removal of approximately 136,000 gallons of biosolids and full replacement of air diffusers - Replacement and enhancement of the chemical feed delivery system, including installation of 4 Watson-Marlow Model 521V chemical feed pumps and a 1,000-gallon UL-listed methanol storage tank - Installation of 4 submersible mixers (model 4620 or equal), 3 Republic Manufacturing KENC-Series regenerative blowers, 12 Sanitaire Model D-12 coarse bubble diffusers, 2 RW Gate Company Model RW750-S slide gates, and 4 THERN, INC. portable davit cranes - Upgrades to electrical and system control facilities, including new instrumentation (DO probes, ORP sensors, nitrate sensors), variable frequency drives, and motor control centers - Additional improvements: yard piping, cast-in-place concrete, roofing panels, safety equipment, baffle walls, and signage - Notable Requirements: - Mandatory site visit for bidders - Compliance with Maryland prevailing wage rates and M/WBE participation - Operator training and reliability testing required - Project duration: 395 days for substantial completion, 455 days for final completion, with liquidated damages for delays - OEMs and Vendors Mentioned: - Watson-Marlow (chemical feed pumps) - Republic Manufacturing (regenerative blowers) - Sanitaire (coarse bubble diffusers) - RW Gate Company (slide gates) - THERN, INC. (davit cranes) - No specific system integrators or general contractors are named; bidders may propose equivalent products meeting specifications.

Description

Sealed bids are requested for the construction of a Post Anoxic Reactor (PAR) tank at the Sudlersville Wastewater Treatment Plant in Queen Anne's County, Maryland. The project aims to enhance the plant's nitrogen removal processes, which currently do not reliably meet permit standards. The scope includes rehabilitation of the existing Biolac reactor by removing accumulated sludge, full replacement of air diffusers, replacement and enhancement of the chemical feed delivery system, construction of a cast-in-place concrete PAR tank, and associated electrical and system control facilities. Bids are due by 9:00 a.m. local time on September 1, 2026, and will be publicly opened and read aloud.

View original listing