Request for Qualifications-Membrane Retrofit Project

MRB Group, PC is soliciting qualification statements for a professional engineering subconsultant to assist with full-scale membrane demonstration and retrofit services for the City of Marlin, Texas. The project is being funded through the Drinking Water State Revolving Fund.  The subconsultant shall be a Texas-licensed professional engineer (PE) and shall have prior experience piloting and retrofitting ceramic membrane filters at a minimum of two or more water treatment plants.

The successful subconsultant shall enter into agreement with MRB Group, PC to act as liaison with the Texas Commission on Environmental Quality (TCEQ), and handle all formal written communications regarding a proposed membrane retrofit and demonstration project.

The subconsultant shall be responsible for the following:

  • Preparation of a pilot study protocol to TCEQ meeting their approval that covers items such as, but is not necessarily limited to:
    • Calibration of alarms, instrumentation, sensors and metering to ensure they are deemed acceptable and reliable, and that the system demonstrates reliable Direct Integrity Tests (DITs);
    • Addressing of flow rates, both forward flow and backwash, including routing and destination of the streams during full scale pilot operations;
    • Discussion of PLC programming that addresses provision of new controls for pilot purposes and / or simultaneous operation of pilot and existing membrane system using existing PLC controls
    • Requesting permission to perform the retrofit construction
  • Securing approval from TCEQ to proceed with retrofit and full-scale pilot

The final scope of work and fee will be negotiated between MRB Group and the successful proposer. Further engagement on the project will be directly with the membrane system manufacturer.

This contract is subject to the Environmental Protection Agency’s (EPA) Disadvantaged Business

Enterprise (DBE) Program, which includes EPA-approved fair share goals toward procurement

of Minority and Women-owned Business Enterprise (M/WBE) businesses. EPA rules require that

applicants and prime contractors make a good faith effort to award a fair share of contracts,

subcontracts, and procurements to M/WBEs through demonstration of the six affirmative steps.

For more details of the DBE Program and the current, applicable fair share goals, please visit

Information that needs to be submitted include:

  • Name of firm.
  • Resume of Principal with contact information
  • DBE certification, if any
  • List of two references with contact information.
  • A completed DBE 6100-4 subcontractor utilization form (attached)

Since the final scope of work is yet to be determined no bids or hourly rates should be submitted.

All costs associated with the submission of this proposal are solely the responsibility of the proposer.

Proposals shall be submitted via email or hard copy by 3:00 p.m., December 4, 2020 to:

Mailing address:

Alan Phillips, P.E.

MRB Group

8834 N. Capital of Texas Hwy.

Suite 147

Austin, Texas 78759