Stormwater State of Affairs
Water quality in the United States has been studied and regulated for many decades. However, it was not until the early 1990s that the U.S. Environmental Protection Agency (EPA) began to acknowledge the impact of diffuse sources of pollution in runoff and to regulate these more nebulous discharges. Various studies published in the 1980s and early 1990s found that approximately 46 percent of pollutants in the nation’s surface waters were attributable in some way to stormwater runoff. Additionally, findings indicated that stormwater runoff contributed heavy metals, coliform bacteria, suspended solids, and other pollutants at concentrations exceeding water quality standards and sometimes at concentrations high enough to threaten the beneficial use of receiving waters.
Los Angeles International Airport LAX
Wheat, barley, and lima beans once grew where the world’s third-busiest airport, Los Angeles International Airport (LAX), is located today. The airport serviced 67.3 million passengers in 2000, who traveled to destinations in the United States, as well as Canada, Latin America, Europe, Asia, and Australasia. The city’s penchant for attracting world events – such as the 1984 Olympic Games the 1994 World Soccer Cup – also has played an important part in boosting the airport’s growth.
Project Case Study: Flexible support retaining and pressure-relief walls adapt sloped site to evolving retail development
On a complex commercial project, where the developer is trying to attract tenants even as construction is getting under way, site designs sometimes have to evolve to keep up with changing client needs and budgets.
George Y. Karmo, P.E., was appointed president of Detroit-based Tucker, Young, Jackson, Tull, Inc., as part of a reorganization plan that includes the phased retirement of former President Paul Tucker, Jr., one of the founders of the firm. Karmo has 30 years of engineering experience, including design, construction, and business development in the areas of water, wastewater, environmental management, and infrastructure.