Page 73

Minnehaha and Lincoln County Hazard Information Type of Hazard Hazardous Materials Incident Definition: Hazardous materials are any substance in any quantity or form which may pose an unreasonable risk to the safety, health, environment and property of citizens. The term “hazardous materials” covers a wide array of products from relatively harmless substances like hair spray in aerosol dispensers and wash preservatives like creosote to highly toxic or poisonous materials like polychlorinated biphenyl (PCBs) and phosgene gas. The potential severity of hazardous materials varies but the primary reason they are designated as hazardous is for their risk to public safety. Hazardous materials incidents involve hazardous materials (HAZMAT) which can be classified into two separate groups. HAZMAT incidents can be of a transportation or a stationary nature, occurring at a fixed site or facility. A list of all fixed facility sites within Minnehaha County is available at the Minnehaha Emergency Management Office. This list is updated annually and dispersed to all local first responders for use in emergency situations. Lincoln County also has also developed a list. Vulnerability All geographic areas of the two counties are susceptible to hazardous materials incidents, however areas prone to higher human use are the most likely to be affected. In particular, those areas in the county within a 5-mile radius around a transportation site such as Interstate 29, Interstate 90, Interstate 229, major highways, rail lines or pipelines are in the greatest danger. Areas at risk from fixed site releases include the locations of hazardous materials manufacturing, processing, or storage facilities, as well as all hazardous waste treatment, storage, and disposal sites. Rural areas have potential for affectation due to chemical transport and use by farmers and because of railways, local highways, and pipelines. Specific populations at risk include those persons living or working next to a fixed site facility or heavily used transportation location. Depending upon the type of hazardous material, large portions of the county could be affected by a release of hazardous materials due to transportation routes running directly through the city of Sioux Falls. The property that would be at risk from a hazardous materials spill depends solely upon the type of hazardous materials release and where it occurs. The potential environmental exposure from such an incident cannot be predicted without identifying the type of hazardous material released and the exact place of

71

2016 Standards of Cover Manual  
2016 Standards of Cover Manual