Determination of the Hydraulic Conductivity of the Alachua County Southwest Landfill
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Slug tests were conducted in the existing gas vents of the municipal landfill of Alachua County, Florida, for the purpose of determining the hydraulic conductivity of the landfilled municipal solid waste. The Bouwer and Rice method of analysis was applied. Two types of slug tests were conducted a conventional method with a volumetric slug and a new method with the removal of a slug by means of a submersible pump. The conventional method measured the hydraulic conductivity of the 24-inch diameter gravel pack and was unsuccessful for the measurement of the municipal solid waste. The pumped slug method successfully simulated the instantaneous removal necessary to hydraulically impact the municipal solid waste. The geometric mean of the late time response of the pump slug tests, 0.00032 cmsec, is the best representation of the horizontal hydraulic conductivity, K sub h, of the municipal solid waste in the vicinity of the gas vents tested. The ranged 0.000067 to 0.00098 cmsec. The range of values can be attributed to the heterogeneities of landfilled municipal solid waste.
- Solid Wastes and Pollution and Control