Detection and Effects of Aperiodic Leachate Discharges from Landfills

摘要

Pilot studies showed that aperiodic pulses of leachate were emanating from a nearby landfill. To evaluate methods of monitoring aperiodic leachate pulses and to characterize their composition, this study was initiated. Monthly variations in pH, specific conductivity, Ca, Cl, Fe, Mg, NH4-N, NO3, K and Zn were monitored in water taken at well point depths of about 10, 20, and 40 feet from six wells and from nearby surface streams. By ground electromagnetic conductivity, a leachate plume was located emanating in a southerly direction from the landfill. A limited organic dye test showed groundwater movement to the south-southwest from the landfill to be rapid and descending. Purgeable hydrocarbons and halocarbons, compounds including methylene chloride, chloroform, toluene, and benzene were found in the leachate and in some residential wells adjacent to the landfill.