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The National Toxic Substance Incidents Program (NTSIP) collects and combines information from many resources to protect people from harm caused by spills and leaks of toxic substances. NTSIP gathers information about harmful spills into a central place. People can use NTSIP information to help prevent or reduce the harm caused by toxic substance incidents. NTSIP can also help experts when a release does occur. NTSIP is modeled partially after the Hazardous Substances Emergency Events Surveillance (HSEES) Program (1990-2009), with additions suggested by stakeholders to have a more complete program. NTSIP has three components National Database, State Partners, and Incident Investigation.