Wastes generated from oil and gas Exploration and Production (E&P) operations contain chemicals that are considered as toxic air pollutants for the purpose of toxic release inventories (TRI) reports or hazardous air pollutants (HAP) under Title III of the 1990 Clean Air Act Amendments. A study was conducted to estimate HAP emissions from E&P waste management operations on a per-event basis. The per-event emission estimates were primarily calculated using U.S. Environmental Protection Agency's guidance and the computer program CHEMDATS. Various types of E&P wastes generated from different operations were used for per-event emission estimates based on typical waste disposal criteria and quantities. Sensitivity analyses were performed to illustrate the effects of different operational parameters on HAP emissions. Based on the per-event emission estimates, simplified procedures were developed to quantify emissions from individual waste disposal/treatment operation events. The simplified procedures can be applied to quantify toxic air pollutant emissions from E&P waste operations with very limited source information.
The Situation
Marathon Ashland Petroleum (Marathon), operated by Marathon Oil Corporation is the fifth largest refiner in the United States. The company in total has seven refineries, 100 terminals, 11,000 miles of pipeline and 5,400 retail outlets. Marathon uses more 9,200 employees to refine close to one million barrels per day. To ensure ongoing commerce, the company regularly refers to 26,000 vendor material safety data sheets (MSDS) and 450 authored product MSDSs.
The Challenge
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