CHAPTER V
 RESULTS AND DISCUSSION


 This chapter presents and reviews the results of all

experiments performed in this research, followed by a

discussion of each topic. Major categories are soil

characterization, batch sorption, column sorption, batch

biodegradation, column biodegradation, and hydraulic

conductivity determination.


 5.1 Soil Characterization


 The aquifer materials used in this research were dry,

clean, uniformly sized, yellowish brown in appearance, and

predominantly fine grained sands. The selected physical

properties of the soil are presented in Table 5-1.

 Soil analysis indicated that there was very little

(non-detectable), if any, organic carbon content in the soil

matrix. For practical purposes it was assumed that the

organic carbon content in the soil matrix was zero. The

bulk density and porosity were not measured under

undisturbed, in-situ conditions.

 All the soils were obtained at the same time and stored

in a capped bucket in the laboratory for later use. They

were visually inspected and foreign objects such as grass

roots and wood chips were removed before use.