The soil-water characteristic curve for Beaver Creek Sand and details of the evaporation tests procedure are presented in the following sections.

3.1 Soil used

The Beaver Creek sand was used in this research study. The sand was air dried, passed through the sieve #10 (2 mm) and washed thoroughly in order to minimize the amount of salt. Then the properties of the soil were measured. Table 1 summarizes some of the properties of the Beaver Creek Sand. The soil will be referred to as ‘‘Sand’’ throughout the paper.