MDWASD Wastewater Treatment Plant Selects Severn Trent Services' TETRA DeepBed Filtration Technology

Fort Washington, PA — The Miami-Dade Water and Sewer Department (MDWASD) South District Wastewater Treatment Plant has selected Severn Trent Services' TETRA® DeepBed™ filtration technology as part of a high-level disinfection (HDL) project that expands the plant's capacity by 60 million gallons per day (MGD) up to 142 MGD and is the precursor to future wastewater reclamation. As Miami-Dade County's population continues to increase, using reclaimed water enables the MDWASD to provide a sustainable water resource for its environment and its future.

The HDL project includes the construction of one of the largest deep bed sand filter systems in the United States. As the general contractor, Poole and Kent, a subsidiary of EMCOR Group, Inc., will oversee the construction of 30 TETRA DeepBed filter cells measuring 15'3" wide by 88' long or more than 40,000 square feet. The filters will employ the new TETRA SNAP T™ HDPE jacketed, concrete filter underdrain, which is designed to provide resistance to uplift during air and water backwash as well as superior resistance to live load.

The filters will have space for expansion up to 48 cells in the future and include the capability of denitrifying. Once in operation, the TETRA DeepBed filters will provide effluent meeting Florida Department of Environmental Protection regulations of <5 ppm TSS. In the short term, the effluent from these filters will be pumped down a deep well. Long term plans include using this quality effluent for irrigation and possible industrial reuse.

In 2006, an eight-month pilot study was conducted by design engineer Hazen & Sawyer in Hollywood, Fla., to evaluate several types of commercially available filter technologies, and TETRA DeepBed filters were concluded to give MDWASA the most reliable and flexible choice. Severn Trent Services was represented by Moss-Kelley, Inc. on this project.

Once started, construction is expected to be completed in about five years.

About Severn Trent Services
Severn Trent Services, with global headquarters in Fort Washington, Pa., USA, is a leading supplier of water and wastewater solutions. The company's broad range of products and services is concentrated around disinfection, instrumentation and filtration technologies, contract operating services and state-of-the-art residential metering products and services. Our analytical services group is the United Kingdom's leading environmental testing organization, and our international operating services business provides worldwide contract operation and support for all aspects of water and wastewater utility operational development and business transformation. Severn Trent Services is a member of the Severn Trent Plc group of companies. Severn Trent is a FTSE 100 company.

About EMCOR Group, Inc.
A Fortune 500 company with more than $5.9 billion in annual revenues, EMCOR Group, Inc. is a global leader in mechanical, environmental and electrical construction, energy infrastructure and facilities services. EMCOR gives life to new structures and sustains life in existing ones by its planning, installing, operating and maintaining the sophisticated and dynamic systems that create facility environments — such as electrical, mechanical, lighting, air conditioning, heating, security and power generation systems — in virtually every sector of the economy and for a diverse range of businesses around the world. EMCOR represents a rare combination of reach with local execution, combining the strength of an industry leader with the knowledge and care of 170 locations worldwide. The 30,000 skilled employees of EMCOR have made the company, in the eyes of leading business publications, among America's "Most Admired" and "Best Performing." EMCOR's diversity — in terms of the services it provides, the industries it serves and the geography it spans — has enabled it to create a stable platform for sustained results. The Company's strong financial position has enabled it to attract and retain among the best local and regional talent, to undertake and complete the most ambitious projects and to redefine and shape the future of the construction and facilities services industry.

About Moss-Kelley, Inc.
Moss-Kelley, Inc., formed in 1984, is a manufacturer's representative firm dedicated to providing the most highly qualified, technically competent and professional sales and service in the water and wastewater industry in the State of Florida. The Company operates from sales offices in Coral Springs and Lake Mary, Fla. The current sales staff has more than 50 years of combined manufacturer's representative experience.

SOURCE: Severn Trent Services