ABSTRACT
With the continuing competition for dwindling space and the tightening of regulations on surface water and groundwater discharges, the large surface impoundments being used by electric utilities for the disposal of their high-volume coal combustion residues are slowly being replaced by managed landfills and stockpiles. Even so, the waste water resulting from the operation of these landfills must be managed so that local surface and groundwater supplies are protected. This chapter presents information on the design, construction, and instrumentation of the test cell and the hydrophysical and chemical data from the site. The meteorology at the site of the test cell is monitored by a variety of devices, including a heated tipping bucket "rain" gauge, temperature and relative humidity sensors, and radiometers to use in evapotranspiration calculations. An essential part of the ash cell monitoring program is the water quality studies being performed to establish the long-term changes in pore water, surface runoff, and leachate chemistry.
