The EPA alleges that the Puerto Rico Department of Transportation and Public Works and the Puerto Rico Highway and Transportation Authority was discharging storm water containing untreated sewage through the storm water systems they own and operate to provide drainage for their roads and highways. Flow from these systems is conveyed to the Department of Natural and Environmental Resources pump stations. Under a legal agreement, the Puerto Rico Department of Transportation and Public Works and the Puerto Rico Highways and Transportation Authority will invest an estimated $44 million over the life of the agreement to: Comply with the permit and develop and implement a Storm Water Management Program; Eliminate all illegal connections and discharges to their storm water systems under an EPA-approved schedule; Address complaints from residents and government agencies by developing a registry of complaints of illegal discharges into their storm water systems and address those complaints; Install, inspect, maintain, monitor, and/or replace warning signs at outfalls; Submit a vacuum truck sludge disposal plan and submit standard operating procedures for pump stations; HTA must investigate the Barrio Obrero Vacuum Sewer System, and either enter into an agreement to transfer the system to PRASA, or repair the system; Develop a program, subject to EPA review, to inspect, clean and repair the storm water system; Develop plans to prevent and respond to spills; Sample water quality at a