The existing, plaza deck system is an expansive, mixed-use facility that acts as the waterproofing for the roof of an underground parking garage. This plaza also serves as access to multiple storefronts and as such, has multiple planters, trees, and landscape architecture features. The owner reported that they have observed leaking from the garage roof slab, which appears to be sourced from the plaza above. Additionally, the concrete overburden on the plaza is deteriorated and cracked along the balance of the structure. This appeared to be due to poor design, differed maintenance and years of exposure to the environment.