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The study has taken a detailed look at selected components involved in establishing the feasibility of aerially applying dispersants on oil spills. The approach has purposely been focused onto only those areas affecting operational feasibility. Little attention has been given to other critical areas such as ecology, comparisons with alternative countermeasures, or even a detailed comparison with alternative dispersant platforms.
The study attempts to include a wide scope in that it has purposely been based on general assumptions and mathematical formulas and could be used to evaluate other spill configurations, volumes, locations, or even other dispersant platforms. The formulas are used to discuss a scenario to disperse the main oil slick resulting from a blowout. Many other scenarios, oil volumes, periods of operation, etc. could be evaluated using these equations.
Based on the developed scenario, the total cost to disperse 20 000 m3 of oil is in the neighborhood of $10.22 million or $511/m3. This figure consists of about $1.3 million for equipment rental and fuel and $8.85 million for dispersants. No allowance has been made for other costs such as manpower or ancillary logistics such as shelter, food, waste disposal, and development of airstrips.
dispersants, oils, aircraft, Arctic, logistics
Head, Environmental Protection Service, Ottawa, Ont.
Vice-president, The Environmental Applications Group Ltd., Toronto, Ont.
Manager, Crowley Environmental Services Corp., Anchorage, Alaska