Specifications include, but are not limited to: Provide a penetrating water repellent treatment solution that consists of an organosilicon compound dissolved in a solvent carrier that, when applied, produces a hydrophobic surface covalently bonded to concrete. Use the following organosilicon compound: Alkyl-Alkoxysilane Provide a solution meeting the following requirements: Solvent carrier leaves less than 1 percent residue upon evaporation; Contains a minimum of 100 percent solids; Certified to meet or exceed the performance criteria listed below based on a single application of the solution according to the specified rate of coverage; Does not stain, discolor, or darken concrete; Application does not alter the surface texture or form a coating on concrete surfaces; Compatible with the use of special surface finish texture coatings as specified; and Treated concrete is surface dry a maximum of 2 hours after application.