Valero is required to provide funding for emergency sirens in Paulsboro and Greenwich Township, improve Paulsboro High School's heating and ventilation system to block the flow of outside air into the building when the refinery releases excessive pollution, and acquire properties to improve public access to an adjacent park. The settlement agreement resolves dozens of pollution violations that occurred at the refinery, located in Greenwich Township along the Paulsboro border, during 2005, 2006 and early 2007. In a series of administrative notices and other enforcement actions, the DEP cited Valero for exceeding overall emissions limits, violating stack-emission testing requirements, exceeding emission standards for pollutants during stack tests, failing to maintain records for monitoring of an air scrubber, and deviating from various other leak detection and repair requirements.