Hazen and Sawyer's focus on water, wastewater and solid waste solutions. The environmental engineering firm specializes in planning, designing, and constructing clean drinking water systems for public and private clients around the world. Specific areas of expertise include architectural design, aquatic sciences, biosolids management, buried infrastructure, odor control, resource economics, risk management, utility management services, and wastewater and stormwater collection. The employee-owned firm operates from some 25 offices throughout the eastern US and two international branch offices in South America.

Tetra Tech EM, a subsidiary of Tetra Tech, provides environmental engineering and consulting services to government and commercial customers. Environmental consulting areas of expertise include site cleanup and restoration, hazardous waste management, air quality, water resources, regulatory permits and compliance, natural resources management, energy management, and environmental management systems. The company, which was established in 1982, also offers management consulting services such as strategic planning and analysis, graphic and production services, communication and conference facilitation, and information management.

The Korte Company provides design/build, design/build/furnish, construction management, and interior design services for a variety of commercial and industrial construction projects. The group works on projects that include warehouse/distribution centers, recreational centers, schools, office complexes, churches, and facilities for local, state, and federal government agencies, including Department of Defense. The Korte Company, which was founded in 1958, operates from offices in Las Vegas, St. Louis, and Highland, Illinois.

Falkenberg Construction Company provides general contracting and construction management services for commercial, light industrial, remodeling, and tenant finish-out projects. Its customers include banks, restaurants, hospitals, grocery stores, and government agencies. Projects include the Haltom City Recreation Center in Haltom City, Texas and the Kiest Athletic Complex in Dallas, as well as a variety of retail shopping complexes throughout Texas. The company was founded in 1983.

Titan Technologies, Inc. licenses recycling technologies to tire recycling plants in the United States and internationally. It utilizes thermolysis, together with a proprietary reactor catalyst, to recycle tires and other scrap material. The company offers its technology for construction and operation of commercial plants to recycle waste tires and plastics into marketable products. Titan Technologies has a working relationship with Adherent Technologies, Inc. to develop technologies for recycling electronic (computer) scrap and waste plastic. The company was formerly known as Titan Uranium Corporation and changed its name to Titan Technologies, Inc. in 1986. Titan Technologies was founded in 1954 and is based in Albuquerque, New Mexico.

A. G. Spanos Companies bridges many operations -- from building, managing, and selling multifamily housing units to constructing master-planned communities, as well as developing land and building commercial space. With divisions and operations in about 10 states, the firm has built about 2 million sq. ft. of office space properties, 120,000-plus apartment homes, and more than 400 developments. Other operations include mixed-use development and property management. Alex Spanos also owns the NFL's San Diego Chargers. He operates the companies with his sons Dean (president and CEO) and Michael Spanos (EVP).

Clark Builders Group, L.L.C. company builds some 6,000 units a year, including apartments, condominiums, and senior housing, as well as military dwellings. While it acts as owner, developer, and builder on some projects, the company primarily serves as third-party general contractor. The company mainly builds in the Washington, DC, area; the Southeast; and California. Founded in 1992, Clark Builders Group is an affiliate of property investment and management firm Clark Investment Group.

Michael Crews Development designs and builds single-family homes and suburban communities in Southern California, Utah, and Texas. Its Tyson-Crews Development partnership develops residential properties in and around Phoenix. Michael Crews Development also offers services that include financing, marketing, purchasing, and selling of homes. Its Emerald Crest Engineering division provides land planning and environmental assessment, project feasibility, engineering, construction management, and structural design services. Its Michael Crews Commercial Development unit manages commercial properties, from buying, building, and selling to leasing and tenant build-outs. President Michael Crews owns the company.

Apogee Enterprises, Inc., through its subsidiaries, engages in the design and development of glass products, services, and systems. The company operates through two segments, Architectural Products and Services, and Large-Scale Optical Technologies. The Architectural Products and Services segment designs, engineers, fabricates, installs, maintains, and renovates the walls of glass, windows, storefront, and entrances comprising the outside skin of commercial and institutional buildings. This segment involves in the fabrication of coated and high-performance architectural glass; installation, maintenance, and renovation of full-service building glass; manufacture of aluminum window systems and curtain walls; paint and anodizing finish of architectural aluminum and PVC shutters; and fabrication of aluminum storefront, entrance, and curtain wall products. This segment markets its products through direct sales, and distribution and independent sales representatives to architects, building owners, general contractors, and glazing subcontractors in the commercial construction market. The Large-Scale Optical Technologies segment manufactures glass and acrylic products for the custom picture framing market and commercial optics. This segment distributes its products through independent distributors and mass merchandisers, as well as directly to museums, and public and private galleries. Apogee Enterprises, Inc. offers its products primarily in the United States, Europe, Australia, and New Zealand. Apogee Enterprises, Inc. was founded in 1949 and is based in Minneapolis, Minnesota.

One of the largest lime companies in the world, Lhoist Group of Belgium, owns Lhoist North America, which was founded in 1966. Lhoist North America (formerly Chemical Lime Company) produces lime and lime-based products derived from calcium-rich limestone. The company's primary product, quicklime (or calcium oxide) is used for steelmaking, ore processing, industrial manufacturing, and construction. The company's products also serve environmental purposes such as wastewater treatment and softening drinking water, as well as roadbed stabilization. Lhoist North America provides lime slurry (hot liquid lime) to its customers from its mobile PORTA BATCH concentrated production units.

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