Project Overview

MH Civil Constructors partnered with the City of Sundown and Parkhill to deliver a New Wastewater Treatment Plant, a comprehensive infrastructure replacement designed to secure the community’s utility future. Moving beyond simple repairs, the City utilized the Clean Water State Revolving Fund to finance a complete system overhaul. The scope featured the construction of a new facultative lagoon, an effluent storage pond, a high-efficiency lift station, and a modern irrigation-based effluent handling system, alongside the formal closure of the City’s outdated treatment facilities.

The Problem

• System Obsolescence: The existing wastewater plant had reached the end of its functional life, requiring a full-scale replacement rather than incremental maintenance.
  
• Environmental Compliance: To meet modern standards and secure state funding, the City needed a system capable of sophisticated effluent handling via irrigation.
  
• Long-Term Reliability: As a primary municipal service, the wastewater system required a design that ensured operational resilience for decades to come.
  
• Decommissioning Needs: The project required a seamless transition from the old plant to the new facility, including the safe and permanent closure of existing infrastructure.

Our Solution

MH Civil managed the end-to-end construction of the new treatment facility, beginning with the installation of a new lift station and 3,268 linear feet of 6-inch PVC force main. The core treatment capacity was established through the placement of over 184,771 square feet of high-performance pond liner and geotextile for the facultative lagoon and storage ponds. To manage effluent, the team constructed a specialized irrigation structure equipped with integrated pumps, electrical controls, and flow meters, supported by 1,204 linear feet of irrigation line and a “Big Gun” irrigation system.

The scope extended to vital site improvements, including the construction of access roads, culverts, and over 2,300 linear feet of security fencing. Throughout the process, MH Civil coordinated the transition of services, ensuring the new plant was fully integrated into the City’s grid before finalizing the closure of the previous facility.

The Results

The project was successfully delivered to a fully operational status, closing out at a final value of $2,515,493.60—significantly under the original contract price through disciplined management and change-order efficiencies. By completing this project within the rigorous requirements of the State Revolving Fund, MH Civil provided the City of Sundown with a modernized, compliant, and highly efficient wastewater solution. Local reporting confirmed the plant’s successful transition into active service, marking a major milestone in the City’s effort to provide reliable, long-term utility service to its residents.

Project Overview

MH Civil Constructors executed the North Water Treatment Plant (WTP) Improvements Project No. 3 and the South WTP Uprating Improvements for the City of Lubbock. This dual-facility modernization program, totaling $15.72 million, represents a significant investment in the region’s water security. The project encompassed critical upgrades to the North WTP—a regional hub serving Lubbock and six neighboring cities—and the South WTP, a membrane-based facility processing surface water from Lake Alan Henry.

The Problem

• Regional Dependency: As a primary regional asset serving multiple member cities, the North WTP required modernized infrastructure to ensure uninterrupted service for a broad population.
  
• Capacity Bottlenecks: Rapid local growth necessitated an “uprating” of the South WTP to increase permitted treatment capacity to approximately 19–20 MGD.
  
• System Modernization: Aging clarifiers, backwash waste storage basins, and pump stations required technological and structural upgrades to maintain operational efficiency.
  
• Operational Continuity: All improvements had to be executed within a live-facility environment, requiring precise coordination to avoid any disruption to the City’s daily water supply.

Our Solution

MH Civil managed a complex, live-facility improvement program that integrated heavy civil construction with sophisticated process mechanical work. At the North WTP, the scope focused on the backwash waste storage basin and pump station, as well as clarifier-related improvements and extensive yard piping. Simultaneously, the team implemented process upgrades at the South WTP—including additional plate settlers and membranes—specifically designed to uprate the facility’s treatment output. To ensure long-term reliability, the project integrated modernized electrical systems, high-performance slide gates, and advanced SCADA programming, providing the City with a fully modernized control interface across both plants.

The Results

The project was successfully completed with a final contract value of $15,719,127, effectively achieving the City’s goal of raising the South WTP capacity to 20 MGD. This modernization effort has secured the 75 MGD output of the North WTP, providing long-term reliability for both Lubbock and its regional partners. By delivering these high-consequence upgrades on time and through disciplined change-order management, MH Civil has strengthened the infrastructure that supports the City’s future growth and its commitment to providing high-quality water from Lake Alan Henry.

Project Overview

The Kemp-Monroe Drainage Phase 2 project was a major storm drainage and street rehabilitation initiative for the City of Wichita Falls. As a critical continuation of the program’s first phase, this project was designed to transition stormwater from surface streets into a high-capacity underground system. Spanning the Kemp/Monroe corridor, the work combined heavy civil drainage installation with comprehensive roadway reconstruction, utility relocations, and safety improvements. With a final contract value of approximately $4.5 million, the project stands as a signature infrastructure effort for the City’s Stormwater Drainage Improvement Fund.

The Problem

• Chronic Nuisance Flooding: The intersection of Kemp Street and Avenue M suffered from recurring flooding that disrupted daily traffic and damaged local infrastructure.
  
• Public Safety Risks: During significant rain events, water depths on Monroe Street could reach up to 4 feet, rendering the corridor impassable for residents and pedestrians.
  
• Emergency Access Barriers: High water levels frequently blocked emergency vehicles, creating a life-safety risk for the surrounding neighborhood during storms.
  
• Residential Vulnerability: Dozens of homes in the immediate area were at risk of property damage during 100-year rain events due to inadequate drainage capacity.

Our Solution
MH Civil Constructors delivered a massive subterranean drainage network and surface overhaul to reclaim the corridor from floodwaters. The technical core of the project involved the installation of thousands of linear feet of high-capacity conveyance, including 42-inch RCP storm sewers and an extensive network of reinforced concrete box culverts ranging in size from 5′ x 5′ to 7′ x 5′. To facilitate this new system, the team managed significant utility relocations, including nearly 1,500 linear feet of 12-inch C-900 waterline and multiple sewer lowerings.

The surface of the corridor was completely transformed through the placement of over 19,000 square yards of 6-inch reinforced concrete paving, complemented by the installation of 25 large-scale curb inlets and modern pedestrian ramps. Throughout the construction process, MH Civil maintained a complex traffic-control package to ensure public safety while navigating the “dips and ditches” of the existing terrain to provide a level, resilient roadway.

The Results
The project achieved its primary engineering goals, effectively reducing the 100-year flood depth on Monroe Street from 4.0 feet to a manageable 1.3 feet, ensuring that emergency vehicles can maintain access during even the most severe weather. The new system now provides direct protection for 35 homes that were previously vulnerable to catastrophic storm events.

Financially and operationally, the project was a success, finishing with 101.5% of adjusted bid quantities delivered and a final value of $4.496 million. By moving stormwater underground and rehabilitating the street surface, MH Civil has helped Wichita Falls eliminate nuisance flooding at key intersections and provided the community with a safer, more reliable transit corridor for years to come.

Project Overview

The City of Lubbock initiated the Lift Station 31 Force Main Reroute to modernize a critical wastewater conveyance corridor serving the 34th Street and Quaker Avenue area. As the City’s second-largest lift station, this facility required a reliable long-term solution to accommodate local growth and replace aging infrastructure. MH Civil Constructors was awarded Contract 15659 to execute the reroute, managing a complex scope that integrated the installation of a new 14-inch force main while navigating a high-density urban environment.

The Problem

• Urban Congestion: The project was located in a heavily traveled corridor near a major hospital district, necessitating strict traffic management and minimal public disruption.
  
• Infrastructure Resilience: The existing force main required a complete reroute and abandonment to ensure system integrity and prevent potential service failures in a high-demand area.
  
• High-Stakes Operations: Because Lift Station 31 is one of the City’s primary wastewater assets, maintaining continuous service during construction was vital to avoid environmental risks.
  
• Utility Density: The new alignment crossed a corridor packed with existing utility lines, requiring precise coordination to avoid damaging critical local infrastructure.

Our Solution

MH Civil delivered a comprehensive construction strategy centered on the installation of approximately 4,476 linear feet of 14-inch C900 DR18 force main. The technical scope included the construction of a new 60-inch fiberglass manhole at 34th Street and the systematic abandonment and cleanup of the decommissioned line. To maintain uninterrupted wastewater service throughout the transition, the team implemented strategic bypass pumping and utilized additional flowable fill for structural stability. The project concluded with a full-scale site restoration effort, including the replacement of asphalt, curb and gutter systems, sidewalks, and driveways to return the sensitive hospital district corridor to its original state.

The Results

The Lift Station 31 Force Main Reroute was completed on time and on budget, with the final project value reaching approximately $803,000. The successful installation of nearly 4,500 linear feet of new pipeline has secured the conveyance capacity for one of Lubbock’s most essential wastewater assets. By executing a disciplined reroute approach, MH Civil successfully minimized disruption in a high-traffic area while ensuring the city’s infrastructure is prepared for future expansion. The project’s completion reflects a total commitment to operational continuity and urban safety.