<p>Leakage or seepage in reservoirs and dams has the potential for structural instabilities persuaded by water leakage pathways linked to economic consequences. An environmental isotopic hydrochemical research was conducted determine source origin of seepages on tunnel Pandanduri dam, Lombok Island, Indonesia. This study aimed examine leak dam site at point based chemistry data stable iso...

Effective long-term monitoring of commercial carbon dioxide (CO2) geosequestration sites must involve multiple and integrated measurement, monitoring, and sampling techniques in order to identify and quantify CO2 leakage. Measuring changes in CO2 soil gas concentrations in the shallow sub-surface can be problematic due to naturally variable background levels, water table elevation changes, and ...

Various physico-chemical parameters, including fluoride (F(-)), were analyzed to understand the hydro-geochemistry of an aquifer in a semi-arid region of India. Furthermore, the quality of the shallow and deep aquifer (using tube well and hand pumps) was also investigated for their best ecological use including drinking, domestic, agricultural and other activities. Different multivariate techni...

Crystalline aquifers of semi-arid southern India represent a vital water resource for farming communities. A field study is described that characterizes the hydrodynamic functioning of intensively exploited crystalline aquifers at local scale based on detailed well monitoring during one hydrological year. The main results show large water-table fluctuations caused by monsoon recharge and pumpin...

Nitrogen isotopes have been used as a tool for identifying sources of nitrate contamination in groundwater for almost 30 years. The method is used most successfully in areas with permeable vadose zones with a shallow groundwater table and in rock units such as fractured limestone, where travel times and/or distances from the source(s) are short. The hydrogeology of Kansas is variable – groundwa...

This review quantitatively examines a number of published studies that evaluated survival and inactivation of public-health-related microorganisms in groundwater. Information from reviewed literature is used to express microbial inactivation in terms of log10 decline per day for comparison to other studies and organisms. The geometric mean value for inactivation rates for coliphage, poliovirus,...

The Ordesa and Monte Perdido National Park, located in the Southern Pyrenees, constitutes the highest karst system in Western Europe. No previous studies regarding its geochemical and isotopic groundwater characterization are available in this area. This work presents the results of field and sampling campaigns carried out between July 2007 and September 2013. The groundwater presents high calc...

Environmental chemistry is a new field of study in many chemistry departments and only three published summaries of environmental laboratory experiments are available (1–3). While these laboratory manuals contain excellent experiments for the training of students in environmental monitoring, relatively few standardized procedures have been published for broader issues such as the measuring of f...

We used the natural geochemical tracers radon-222 and radium isotopes (223Ra, 224Ra, 226Ra, 228Ra) to assess exchange rates between the Chao Phraya River and the Gulf of Thailand, and the magnitude of groundwater discharge in the estuary. We performed tracer surveys during two periods in 2004, in January (dry season, gauged river discharge 47 m3 s21) and in July (wet season, 430 m3 s21). The is...

1-Introduction: Some researchers defined environment pollution as any change in properties of the environment members in a way that makes not only natural performance and biological balance disordered but also jeopardizes the benefits and the life of living creatures directly and indirectly. For centuries, different heavy metals, whether anthropogenic or earth-made, have been releasing into wat...