Archive for July, 1989

Based upon results of EPA’s research program, the Exxon Corp. will soon begin bioremediation applications on 5800 yards of shoreline on Green and Seal Islands in Prince William Sound, Alaska. Exxon’s proposal has been approved by the Regional Response Team, chaired by the U.S. Coast Guard.

EPA informed Exxon on July 26 that it would support a proposal by the company to use bioremediation to aid in cleaning up the oil spilled from the Exxon Valdez in Prince William Sound.

In a letter to Exxon, EPA provided information that would support the use of bioremediation as a cleanup technique for the Valdez oil spill. EPA’s recommendations are based on the preliminary results of a small-scale feasibility test the agency began in June using indigenous microorganisms to degrade spilled oil on the Sound shoreline.

The bioremediation technique being used in the test involves adding fertilizers to enhance the growth of bacteria naturally present in the environment. These bacteria naturally degrade certain of the toxic hydrocarbons in oil. Bacterial growth can be increased by applying fertilizers, which increase the availability of nitrogen and phosphorus, the nutrients bacteria need to utilize hydrocarbons as a food source. EPA is recommending both fast- and slow-release fertilizers to optimize cleanup.

Attached is a copy of EPA’s letter to Exxon in which the agency states its support of an Exxon proposal for the use of bioremediation to clean up the Valdez oil spill. Read more…

Source: EPA


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