Sentence examples for pollutant attenuation from inspiring English sources

However, chemical and microbiological sampling of the water in the sumps and ponded water over the winter periods demonstrated that the systems were acting as excellent passive pollutant attenuation processes.

Recharge water transports the contaminants to the aquifer 4 Hydraulic conductivity Defines the ability of the aquifer to transport water, which determines the flow rate of contaminants 3 Aquifer media Refers to the saturated zone material properties, which controls the pollutant attenuation processes 3 Soil media The unconsolidated or loose covering that covers the surface of the earth.

Key areas highlighted for future research efforts include: (1) wider collation of mine drainage wetland performance data in regionalised datasets to improve empirically-derived design guidelines and (2) obtaining an improved understanding of nature of the extremophile microbial communities, microbially-mediated pollutant attenuation and rhizospheral processes in wetlands at extremes of pH.

A classification scheme for pollutant natural attenuation potential at the groundwater surface water interface is presented, and its predictive power for explaining baseflow river nitrate concentration investigated.

For regional regional pollutant pairs, the attenuation of model coefficients was likely to be minimal given the relatively low variance of the exposure error [var < 0.16 for all regional pollutants and types of exposure error].

We compared exposure metrics and exposure errors within and across pollutants and derived attenuation factors (ratio of observed to true coefficient for pollutant of interest) for single- and bipollutant model coefficients.

When modelled as classical-type error, risk ratios were attenuated, particularly for primary air pollutants, with average attenuation in risk ratios on a per unit of measurement basis ranging from 18% to 92% and on an IQR basis ranging from 18% to 86%.

Examination of low-relief watersheds characteristic of the southeastern coastal plain reveals common hierarchical patterns of surface water convergence that may be emulated in developed watersheds to enhance the efficacy of peak-flow attenuation and pollutant removal.

For example, the λ associated with δspatial in a single-pollutant model reflects the attenuation of model coefficients due to error from incomplete characterization of the spatial variation in the concentration of the pollutant in question.

The addition of a co-pollutant appears to increase attenuation.

For the sensitivity analysis, we constructed single- and two-pollutant models based on five pollutants PM10, NO2, O3, CO, and SO2 and observed any attenuation of a single-pollutant effect by adjusting for another pollutant in the model.