Domestic wells in North America and elsewhere are typically constructed at relatively shallow depths and with the sand or gravel pack extending far above the intake screen of the well (shallow well seal). The source areas of these domestic wells and the effect of an extended gravel pack on the source area are typically unknown, and few resources exist for estimating these. In this article, we u...

Polycyclic aromatic hydrocarbons are a class of potentially hazardous chemicals of environmental and health concern. PAHs are one of the most prevalent groups of contaminants found in soil. Biodegradation of complex hydrocarbon usually requires the cooperation of more than single specie. In this research biotreatment of PAH (phenanthrene) was studied in a solid-phase reactor using indigenou...

The models that were analyzed using FLAC version 4.0 (FLAC, 2000) are shown on Figure 5.1. The models have different soil types: loose silty sand with 20% fines content (Figures 5.1a and 5.1b), soft clay (Figure 5.1c), and silt (Figure 5.1d). Hence, the determination of the parameters is different for each model. The following sections discuss the determination of the parameters used in the ana...

The Yogyakarta – Bawen Toll Road construction is one of the National Strategic Projects because it passes through four regencies in Central Java Province and Special District Yogyakarta. As general consideration for infrastructure planning, was required to consider preventing damages due natural disasters, including liquefaction caused by an earthquake. study area has a shallow groundwater tabl...

Site characterization is a prerequisite for the successful and economic design of engineering structures earthworks by providing geological information any proposed project. Until now, no detail study has been carried out on site classification using shear wave velocity (Vs) up to top 30 m depth in Hawassa town. For this study, multichannel analysis surface waves (MASW) was used determine varia...

Rock lithology modeling of flood-prone areas has been carried out using the Vertical Electrical Sounding (VES) method in Rawa Makmur village, Bengkulu city. Field data acquisition a stretch length 160 with MAE X612-EM Geoelectric tool forming straight line. VES method, Excel software for resistivity variations depth and Progress modeling. This research aims to determine subsurface condition cha...

the northern sector of the Kent interlobate Complex, created by two major ice lobes of the Laurentide ice sheet during late Wisconsinan times, dominates the glacial landscape of northeast Ohio. the geomorphology of this impressive complex reveals the presence of large hummocks, kettle lakes and substantial esker chains. the esker chains, usually smaller than 1.3 km long, run parallel to the int...

Soil moisture is a key variable in dryland ecosystems since it determines the occurrence and duration of vegetation water stress and affects the development of weather patterns including rainfall. However, the lack of ground observations of soil moisture and rainfall dynamics in many drylands has long been a major obstacle in understanding ecohydrological processes in these ecosystems. It is al...