the ambient medium. (Note that we are not tracking the ionization which would change these values if the ionization level were lower in the clouds than in the intercloud medium.) These values are consistent with typical cold neutral () cloud values. We do not expect the cloud temperature to be important to the remnant evolution. The cloud density could have some effect, since a larger density, for the same ratio of cloud mass to intercloud mass, would imply a lower cloud filling factor, though we think that our assumed density is realistic. For the cloud sizes we use a power law in radius. We took the distribution used in @McKee+Ostriker_1977, which was partly based on observations by @Hobbs_1974 and has lower and upper radius cutoffs of 0.48 and 10 pc and a power law exponent of -3 in radius. We create realizations of the cloud distribution by drawing randomly from this power law distribution and also choosing cloud location randomly within the simulation volume. We discard clouds that overlap with previously generated clouds such that each cloud is distinct from all the others. We also discard clouds that extend outside of the simulation volume. For our 2D cylindrically symmetric runs 