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AS EPA BEGINS TO EMBRACE 'PASSIVE' BIOREMEDIATION, TOXIC SITE TESTING, MONITORING GAINS MARKET DEMAND

 AS EPA BEGINS TO EMBRACE 'PASSIVE' BIOREMEDIATION,
 TOXIC SITE TESTING, MONITORING GAINS MARKET DEMAND
 COSTA MESA, Calif., Feb. 10 /PRNewswire/ -- With last year's announcement by the Environmental Protection Agency (EPA) that passive bioremediation showed promise as a method for cleaning up some toxic leaks in underground storage tanks, the need for monitoring and testing the contamination from such spills has significantly expanded, according to Adam Zipp, Ph.D., chairman of Toxic Technology Inc., based in Costa Mesa.
 Passive bioremediation merely means letting nature do the mopping up of toxic leaks from underground storage tanks such as those found beneath the corner gas station. Naturally occurring bacteria and nutrients found in the soil literally eat the harmful hydrocarbons associated with such leaks.
 As an alternative to "active" remediation methods, such as excavation or thermal oxidation, the application of naturally occurring bacteria on a toxic spill, or the utilization of bacteria already present in the soil (passive bioremediation) are much less costly methods of cleaning up toxic hydrocarbons, said Zipp.
 David Ziegele, chief of EPA's Office of Underground Storage Tanks, said the agency is conducting further studies of passive bioremediation effectiveness, which could eventually be used in 20 percent of all leak cases.
 Toxic Technology Inc. (TTI), which owns the patent on the testing and monitoring technology most widely used by the environmental industry for monitoring the course of passive bioremediation, sees a huge potential market for its technology given the EPA's new stand on passive bioremediation.
 "Our monitoring and testing procedures are going to play a big role in the future assessment of underground storage tank leaks," said Zipp. "Whether passive or active remediation is called for in mitigating a toxic site depends on the nature and severity of the soil contamination. The only way you can determine that passive remediation is effective and that ground water is not being impacted by contamination is through very precise testing and monitoring of the hydrocarbon plume stability. This patented monitoring system is afforded only by the TTI technology."
 TTI's patented methodology for assessing toxic leaks and monitoring their natural degradation where appropriate is called the TTI Mapping System.
 According to Zipp, the four-step testing and monitoring procedure first maps where toxic substances are in the soil, then carefully monitors the site to determine the lateral and vertical profile of the discovered contaminants. Subsequently, the process samples the vapors emitted by the contaminants which allows TTI to identify the specific hydrocarbons in the soil.
 The final step calls for an analysis of vapors emitted from the contaminated soil to determine whether or not naturally occurring soil bacteria are digesting the contaminant hydrocarbons, thus confirming that passive bioremediation is occurring. This technique has also enjoyed wide applicability as a leak detection method for underground storage tanks, thereby affording significant cost savings compared to conventional techniques.
 "Once the state and local agencies follow the EPA's lead and fully accept the viability of passive bioremediation as a mitigation methow it is gaining widespread acceptance as the only method of choice for monitoring unique types of bioremediation projects. However, its true beauty is going to be its utility in permitting site closure through passive remediation methods rather than costly active methods currently used. Ultimately, this translates to huge monetary savings with respect to toxic waste management."
 Toxic Technology Inc. is an integrated environmental consulting company specializing in the detection and identification of pollution problems resulting from the use, handling, storage and disposal of hazardous chemicals and toxic substances.
 For more informati,? contact Zipp at Toxic Technology Inc., 3197-C Airport Loop Drive, Costa Mesa, CA 92626, 714-668-1669.
 -0- 2/10/92
 /CONTACT: Dana Kovach of Hubbert Kovach, 714-751-2160, for Toxic Technology/ CO: Toxic Technology Inc. ST: California IN: SU:


KJ-JL -- LA001 -- 3596 02/10/92 12:11 EST
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Publication:PR Newswire
Date:Feb 10, 1992
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