Title
Wastewater Odor Control Chemicals Contract
Action
Action:
A. Award a unit price contract to the lowest responsive bidder Evoqua Water Technologies LLC for the purchase of Calcium Nitrate for up to 16 months, and
B. Authorize the City Manager to renew the contract for up to two one-year terms with possible price adjustments and to amend the contract consistent with the City’s business needs and the purpose for which the contract was approved.
Body
Staff Resource(s):
John Huber, Charlotte Water
Explanation
§ Charlotte Water currently operates 82 sewage lift stations in the wastewater collection system.
§ Lift stations pump sewage from low areas up to the gravity mains which then flow to the various Wastewater Treatment Plants.
§ During normal operations hydrogen sulfide, an odor that resembles rotten eggs, is produced and emitted from the system due to the retention times and the pump action.
§ Charlotte Water would like to use calcium nitrate, an environmentally safe chemical, to effectively prevent sulfide from forming thereby eliminating odor from and corrosion in the wastewater collection system.
§ On November 15, 2016, Charlotte Water issued an Invitation to Bid; one bid was received from an interested service provider.
- One bid is acceptable per the North Carolina General Statutes for commodities. Furthermore, it is not unusual to receive one bid for a chemical due to the limited number of suppliers.
§ Evoqua Water Technologies LLC was selected as the lowest responsive, responsible bidder.
§ Unit prices may adjust at the renewal period based on the Producer Price Index.
§ Estimated annual expenditures are $627,900 based on the current number of sites and dosage.
Charlotte Business INClusion
No subcontracting goals were set because there are no subcontracting opportunities (Part C: Section 2.1 (a) of the Charlotte Business INClusion Policy).
Fiscal Note
Funding: Charlotte Water Operating Budget