EPA published revisions to certain sections of the Emergency Preparedness & Community Right-to-know Act (EPCRA). The revisions made to EPCRA relate to reporting of storage of hazardous materials under Sections 311 and 312, revisions made by EPA are primarily in two areas:Changes in how on-site quantities are calculated, especially for mixtures, and, Changes regarding how soon changes at a facility related to hazardous materials must be reported to the appropriate agencies