The impact of urban groundwater upon surface water - eTheses ...

WATER QUALITY INTERACTIONS
occurrence and/or the stringent toxicity standards that apply to them. These toxicity standards
are extremely useful in assessing the impact on the ecology in specific areas, but to manage
the overall river quality effectively and to assess any attenuation processes that may be taking
place a calculation of contaminant flux is required. Some of the high concentration plumes
identified may have only a limited discharge, while other lower concentrations may discharge
at a greater level and so provide a more significant mass input to the surface water. The mass
flux to the river from the groundwater will be considered in Chapter 8.
314