RCP developed its own HCA model to identify segments along a hazardous liquid or natural gas transmission pipeline that could affect a High Consequence Area in accordance with 49 CFR §192.903 and §195.452. RCP’s final reports for gas pipelines include detailed findings, calculations regarding Potential Impact Radius (PIR), and maps showing HCAs. For liquid pipelines, final report calculations and maps show NPMS identified HCAs, pipeline centerline location and hazard buffers generated from the air dispersion analysis; overland flow analysis and/or a waterborne transport analysis, as applicable, capable of affecting that HCA and identification of any further action required relative to the DOT/PHMSA’s pipeline integrity management rules.