Annual Wastewater Flow Meter Accuracy Verification Process

The City of Mesa issued a Request for Quote (RFQ‑2025194) to establish a five‑year, requirements‑type contract for the annual verification of wastewater flow‑meter accuracy at 15 municipal sites across Mesa, Queen Creek, and Gilbert. The contract was ultimately awarded to RDH Environmental Services, LLC with an annual ceiling of $50,000. The scope includes confined‑space inspections, calibration, certification of accuracy, and delivery of detailed reports within 30 days of each site’s service. The award is a single‑vendor unit‑price contract with a base period of July 1 2025 – June 30 2030 and a possible six‑month extension. • Scope: annual inspection, calibration, and certification of flow meters (Parshall flumes, Pulsar, Teledyne/ISCO meters). • Geography: sites in Mesa, Queen Creek, and Gilbert, AZ. • Budget: $50,000 per year (approx. $250,000 total over 5 years). • Requirements: OSHA/confined‑space compliance, insurance, QC plan, and timeliness penalties.