27000830 Turnkey Arsenic Pre-Treatment Services RFP

The City of Midland (the City) is soliciting competitive proposals from qualified firms to provide complete turnkey arsenic pretreatment services for groundwater produced from the City-owned T-Bar Wellfield. The primary and controlling purpose of this procurement is to achieve reliable and consistent reduction of naturally occurring arsenic before groundwater sourced from the TBar Wellfield enters the City's transmission system and downstream disinfection facilities.

The Contractor shall provide all professional services, permitting support, equipment, structures, piping, electrical power delivery, controls, instrumentation, communications, labor, treatment media and chemicals, testing, operation, maintenance, residual management, reporting, site restoration, and other lifecycle services necessary to provide an uninterrupted treatment service and fulfill the requirements of this RFP and the final Agreement. The Contractor shall own, operate, and maintain the system throughout the contract term unless the final agreement expressly provides otherwise.

The Contractor shall provide a complete turnkey treatment and shall furnish every item reasonably necessary to receive raw groundwater, treat it for arsenic, consistently meet the applicable contractual performance and treated water quality requirements, deliver the accepted treated water to the City at the designated connection, and manage all resulting residuals. The scope includes items not expressly listed when they are necessary for a safe, permitted, compliant, reliable, and complete system.

Scope areas

• Site Investigation and Basis of Design
• Engineering and Permitting
• Treatment Equipment and Facilities
• Civil, Structural, and Site Work
• Electrical Power Delivery
• Controls, Instrumentation, and GE iFIX Integration
• Startup, Commissioning, and Acceptance
• Operations and Maintenance
• Sampling, Laboratory Services, and Reporting
• Demobilization or Transfer at End of Term

Flow requirements

| Operating Condition | Required Flow | Approximate Flow |
| --- | --- | --- |
| Winter operating condition | 5.0 MGD | 3,472 gpm |
| Summer operating condition | 12.0 MGD | 8,333 gpm |
| Normal turndown and intermediate operation | Between 5.0 and 12.0 MGD | Continuous and stable operation required |

The proposed system shall be designed for a treated-water arsenic target of 0.005 mg/L or lower and shall contractually guarantee accepted treated water at or below 0.008 mg/L. Water with arsenic at or above 0.010 mg/L shall not be delivered as accepted treated water.

The proposal shall describe the disposition of the treatment facility at the end of the initial term and each extension. The proposer shall provide optional buyout values at the end of years 10, 15, and 20.

**Submission:** Proposals may be mailed or delivered to the City Secretary, City of Midland, Suite 330. Proposals will be accepted until **2:00 P.M. on December 9, 2026**. No late proposals will be accepted.

**Mandatory** attendance at the pre-proposal conference and site visit is required. Failure to attend or to provide the required documentation of attendance may result in rejection of the proposal as nonresponsive.

The City intends to select the proposal that provides the best overall value. Award will not be based on price alone. The published evaluation criteria in Section 16 will control the scoring. Arsenic performance is the highest-weighted technical criterion.

Initial term: Ten (10) years beginning on the Commercial Operation Date. Renewal options: Two (2) additional five-year terms, exercised at the City's sole discretion.

The attached contract and insurance requirements are non-negotiable. Proposer must provide properly executed bonds (if applicable) and provide insurance as required within the contract documents within 21 days of the date of the transmittal letter.