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"Journal of Environmental Engineering presents broad interdisciplinary information on the practice and status of research in environmental engineering science, systems engineering, and sanitation."

"ABSTRAKIn this paper, we present the results of a study of the temporal 3D characteristics of earthquake ground motion at a single point, which are a completely different set from the frequently used spatial 3D characteristics. A ground motion trajectory from the 1995 Kobe earthquake is analyzed, based on the concept of temporal curvature and torsion. Kinematic turning and twisting of the ground motion are found to have occurred in the form of temporal curvature and torsion pulses. These pulses have typical durations of 100 or 20 ms, respectively. These two types of pulses offer some detailed characterization of the ground acceleration behaviors. "

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"ABSTRAKIn recent years, land development in many suburban and rural counties has been impeded by the combined lack of municipal sewers and soil conditions necessary for conventional septic tank and soil absorption systems. Prince William County, Virginia, is such a county. When faced with an influx of population and commercial enterprises, it became obvious that some alternative, and innovative, on-site sanitary wastewater management system was required for many areas of the county.In 1974, the Prince William County Department of Public Health undertook the evaluation of one alternative and innovative on-site wastewater management system. The test site was a major oil company's full service gasoline station in Gainesville, Virginia. After five years of close observation, the conclusion is that the system can provide an effective and environmentally sound method for on-site wastewater treatment. This article summarizes the evaluation criteria used, data collection parameters, and analysis results. A presentation was made to the NEHA annual conference in Charleston, S.C."