Feature Photo: View of the City of Mart from State Highway 164. Image: Google Streets.
by Adolfo Pesquera
Mart (McLennan County) — The Texas Water Development Board has approved $7,305,000 in financial assistant to help the town of Mart to design and rebuild the wastewater system.
The City of Mart, located 20 miles east of Waco, provides water and wastewater services to approximately 2,000 residents and 850 active connections. Its wastewater treatment plant (WWTP) is hydraulically limited, and many basins are process limited such that they are not able to treat permitted flows, especially during rain events.
The WWTP discharges into a stream segment that is listed as impaired due to high bacteria levels. The city received a Notice of Enforcement from the Texas Commission on Environmental Quality in March 2019 for numerous deficiencies at the WWTP, including overflow at the headworks and oxidation ditch, nonoperational aeration system rotors, and insufficient dissolved oxygen in treated effluent.
The collection system is also subject to high rates of inflow and infiltration due to aged, vitrified clay collection lines and manhole deficiencies.
Proposed improvements to the WWTP include demolition of abandoned process structures and piping, and installation or construction of new lift station pumps, aeration basin, clarifier, aeration blower facility, chemical feed facility, aerobic digester basin, sludge drying beds, motor control center, Supervisory Control and Data Acquisition facilities, and other improvements.
Other existing structures and processes will be upgraded, including expansion of the chlorine contact basin, recycle sludge pumping, yard piping, and electrical systems.
In addition, the city plans to repair or replace approximately 7,900 linear feet of collection lines and 18 manholes. Additional collection system rehabilitation will be included as funding permits.
The state water development board agreed on Nov. 19 to two action on Mart’s behalf that consist of $3,055,000 in financing and $4,250,000 in principal forgiveness from the Clean Water State Revolving Fund.
The City of Mart is scheduled to close on the TWDB financing March 1, 2022.
The engineering feasibility report, which represents the end of the planning phase, will be completed September 30, 2022. The design phase is projected for completion by May 30, 2023.
Construction should begin by Aug. 31, 2023 and reach completion by the end of January 2025.
The budget statement estimates a construction cost of $5,350,000. Other associated costs include $807,000 for basic engineering; $443,000 for special services; $162,641 for fiscal services; and $542,359 for a contingency fund.
VBX Project ID: 2021-80FA