Sanitas Technologies articles

Abstract

This paper will provide an overview of how ground water monitoring statistical choices can significantly impact a facility`s ground water monitoring costs. For example, a recent study analyzed the long term ground-water monitoring cost impacts of different statistical analysis approaches on over 20 landfills. The study found that the choice of statistical approach can make over a 50% difference in long term monitoring costs. Four key issues in choosing a stat

Abstract  

The reality of the new statistical evaluation requirements for ground water at Subtitle D facilities are being felt nationwide. All too often these requirements are resulting in unnecessary increases in ground water monitoring costs and erroneous indications of facility impacts. For example, a common situation faced by many older facilities is that there is statistically significant natural spatial variation in the hydrogeology underlying their si

Peer-reviewed guidance documents for the statistical analysis of ground-water monitoring data have been available for years, from the US EPA and from other bodies such as state Departments of Environmental Quality and ASTM. The truth, however, is that many of the statistical requirements are not being enforced by state regulators, with the result that statistics — where performed at all — may be not applied correctly. The long-term consequences of this inconsistent regulatory envi