Historically, studies of surface detector response have been severely limited by the inability to simulate charge density fluctuations at the distance scale of individual detector units. We present a two-prong solution. First, we have developed a technique that allows us to run the unmodified CORSIKA in parallel mode. This has allowed us to simulate $\sim100$ non-thinned CORSIKA showers in the $10^{19}$~eV epoch. Second, we have developed a dethinning algorithm that enables us to reconstruct the information lost using the CORSIKA thinning option. This algorithm is validated by comparison with the unthinned parallel showers mentioned above. By convolving a $10^{4}$ event shower library of dethinned CORSIKA events with the Telescope Array surface detector response, we will characterize our surface detector observational capabilities and present extensive Data/Monte Carlo comparisons.