Project Overview

MH Civil Constructors partnered with DN Tanks to deliver the North Water Treatment Plant 8 Million Gallon Ground Storage Tank Improvements in Lubbock, Texas. This critical infrastructure project focused on replacing high-capacity finished-water storage to secure the City’s water supply. While DN Tanks handled the tank construction, MH Civil executed the comprehensive sitework and civil infrastructure package. The project successfully grew from an original subcontract of $3.47 million to a final value of $4.59 million, reflecting a massive scale-up in site preparation and utility support.

The Problem

• Structural Failure: The plant’s existing ground storage tank sustained severe structural damage during a catastrophic 2018 freeze event, rendering it unreliable.
  
• Loss of Redundancy: As a key facility serving more than 300,000 people, the damaged tank created a critical gap in the City’s water storage redundancy and operational flexibility.
  
• Maintenance Constraints: Without the storage capacity of the North Water Treatment Plant, the City faced significant challenges in balancing system demands during ongoing maintenance.

Our Solution

MH Civil managed the full lifecycle of the site’s civil requirements, ensuring the foundation and surrounding infrastructure were prepared for a massive 8-million-gallon structure. The scope began with specialized site preparation, including comprehensive tank excavation, select fill placement, and the construction of stabilized winding tracks and heavy-duty crane positions to facilitate tank assembly. This foundation was further reinforced by advanced infrastructure such as underslab encasements, complex vault piping, transfer pump station improvements, and dedicated electrical and instrumentation duct banks.

To ensure long-term site connectivity and efficient drainage, the team constructed a network of access roads, ramps, and specialized paving bases. The project concluded with full site restoration, involving strategic backfill, protective coatings, and the installation of water distribution piping to seamlessly integrate the new storage facility into the existing municipal network.

The Results

Project Overview

The City of Greenville, Texas, relies on Lake Tawakoni as its sole source of raw water. With intake and transmission infrastructure dating back to the 1950s and 1960s, the City launched a major capital improvement program to modernize its delivery corridor. MH Civil was selected to execute the Raw Water Main Parallel Pipe Project and related pump station improvements, a critical infrastructure effort with a contract value exceeding $33 million. The scope featured the installation of a 20-mile-long parallel transmission main and significant upgrades to the Lake Tawakoni raw water pump station.

The Problem

• Single Source Vulnerability: The existing raw water line was the City’s only source of water; any failure in the aging 1950s-era infrastructure posed a catastrophic risk to Greenville’s water supply.
  
• Capacity Constraints: The original system was limited to 19 MGD (million gallons per day), which was insufficient to meet the City’s ultimate future demand of 38 MGD.

• Aging Infrastructure: Decades of service had left the intake and header facilities at the pump station in need of modernization to ensure long-term operational resilience.

Our Solution

The project centered on a massive logistical and engineering effort: the installation of over 102,000 linear feet of 36-inch fusible C900 PVC pipeline. MH Civil self-performed critical scopes, including excavation, pipe installation, and complex jack-and-bore crossings, including over 1,800 linear feet of 48-inch steel casing.

To stabilize the system and prepare for increased flow, the solution included pump station and header improvements, highlighted by the installation of two 25,000-gallon bladder surge tanks and new ductile iron headers. Throughout construction, MH Civil prioritized stakeholder coordination, managing traffic control, utility locating, and proactive public communication to minimize the impact on local residents and businesses.

The Results

Project Overview

Martin Road Lake, originally a natural playa before its designation as a lake in 1952, has been a central feature in Amarillo. Recognizing the need to enhance flood control, improve water quality, and provide recreational amenities, the City of Amarillo initiated a comprehensive improvement project. The project encompasses four phases, with Phases 3 and 4 approved by the Amarillo City Council on January 11, 2022, with a budget allocation of $10.8 million.

The Problem

• Flood Control: The area surrounding Martin Road Lake has experienced frequent flooding due to inadequate stormwater management systems.
• Water Quality: Stagnant water and limited circulation have led to poor water quality, affecting local wildlife and recreational use.
• Recreational Facilities: The existing amenities were outdated, limiting community engagement and use of the lake area.

Our Solution

The project centered on a critical upgrade to the stormwater drainage system, utilizing high-capacity pipes and redirection channels to mitigate frequent local flooding. This infrastructure simultaneously improved water quality by eliminating stagnant zones, boosting oxygen levels for aquatic life, and ensuring safer recreational use.

Beyond engineering, the lake’s perimeter was transformed into a recreational hub featuring extended walking trails, a new sustainable fishing pond, and improved public safety through updated lighting, surveillance, and expanded parking.

The Results