After the snow melts and while the spring rains keep coming, lots of owners and contractors get fidgety, waiting for a site to dry up enough to put in a parking lot. But if they decide to pave with concrete, they can prepare the base by drying it up and then pave immediately. An area that is rough and muddy, with pools of standing water, can be dried and stabilized with lime. This will make a base that is adequate for concrete pavement, since concrete pavement is itself a structural material. Soils containing more than 3 percent organic matter, however, cannot be stabilized this way. It's also possible to stabilize wet and soggy areas with cement-kiln dust.