The (110) surface is not as atomically smooth as the (100) and (111) surfaces. Hydrogen atoms can adsorb onto short-bridge (SB) sites on top of plutonium ridges, or onto hollow (H), fcc, and long-bridge (LB) sites in the grooves between ridges. Unlike the (100) and (111) slabs which had 8-16 of each site, the (110) slab only has 4 LB, SB, or H sites. As a result, we cannot compute the adsorption energies of some hydrogen adsorption dimers or double vacancies since, for example, two hydrogen atoms in neighboring LB sites would fill the entire periodic valley. We will limit our analysis of (110) configurations to isolated hydrogen atoms, single vacancies, and dimers or double vacancies involving different types of sites. Even still, the number of possible combinations of site types leads to a large number of configurations to evaluate. To make the problem tractable, we further restrict our analysis to LB-SB, LB-H, and LB-fcc pair combinations.