The North Texas Municipal Water District recently contracted with PECI to design miscellaneous improvements to the Muddy Creek Wastewater Treatment Plant in Sachse, Texas. PECI specified a biological odor control system (bioscrubber) with organic media for the influent lift station. This allowed the District to reduce the usage of the existing chemical scrubber located at the solids handling building and resulted in substantial chemical and energy costs. To reduce corrosion in the existing electrical room, PECI specified a positive pressurization unit to pressurize the room with scrubbed air. In addition PECI redesigned the existing chemical storage area with three new bulk tanks to store a full truckload of sodium hydroxide and sodium hypochlorite. The project was completed in 2011 at a cost of $579,000.