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PRE-INCIDENT PLANNING on the other hand would delay toxic Agricultural burn days are predicated on runoff from filtering down to underground inversion layers and wind shearing. An water tables. inversion layer would contain the smoke plume to ground level, indicating the need The permeability of the soil can be for extinguishment and potential identified by contacting an engineering evacuation. Wind shearing allows the firm located or working in the area of the smoke column to dissipate into the upper tire pile. The collection of this atmosphere. information may also be included in the use permit application. The U.S. Weather conditions affected the response Department of Agriculture Soil of fire fighters in Canada. The tires were Conservation Service can also provide the essentially surrounded by frozen ground. necessary soil information on a county-by- As the ground thawed, fire fighters county basis. sloshed knee deep in the cold oily mud. The application of water in mid January at Topography the Morganstown, Pennsylvania tire fire, had fire fighters skating on pools of ice. Topography, the lay of the land, would indicate where potential runoff could be Conversely, imagine fighting a tire fire arrested using holding ponds, dikes, and with 100° plus temperatures--typical dams. A topographical map would be summer temperatures here in California. useful to identify these containment areas, as well as identifying above ground water Emergency Contacts ways and natural drainage. Identifying emergency contacts and Weather resources is crucial. Site owner/operator, mutual aid resources, law enforcement, Weather should also be included in your environmental agencies from the County, data collection. Knowing the average State, and Federal Governments should wind speed and direction would be useful top your list. Also include media and in determining your initial approach and other political and social representatives set-up. As with other hazardous materials from the surrounding area. incidents, the approach to a tire fire should be upwind and upstream. The fire service manufacturing industry and suppliers for equipment and The average humidity and rainfall as it specialized extinguishing agents should affects the growth and dryness of also be included. Suppliers of foam, sand vegetation around the site could also be and gravel, even refineries and waste noted. recovery companies should be identified. 41