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PROTOZOA IN SUBSURFACE SEDIMENTS FROM SITES CONTAMINATED WITH AVIATION GASOLINE OR JET FUEL
Citation:
Sinclair, J., D. Kampbell, M. Cooke, AND J. Wilson. PROTOZOA IN SUBSURFACE SEDIMENTS FROM SITES CONTAMINATED WITH AVIATION GASOLINE OR JET FUEL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-93/279.
Description:
Numbers of protozoa in the subsurface of aviation gasoline and jet fuel spill areas at a Coast Guard base at Traverse City, Mich., were determined. oreholes were drilled in an uncontaminated location, in contaminated but untreated parts of the fuel plumes, and in the aviation gasoline source area undergoing H2O2 biotreatment. amples were taken from the unsaturated zone to depths slightly below the floating free product in the saturated zone. rotozoa were found to occur in elevated numbers in the unsaturated zone, where fuel vapors mixed with atmospheric oxygen, and below the layer of floating fuel, where uncontaminated groundwater came into contact with fuel. he same trends were noted in the biotreatment area, except that numbers of protozoa were higher. umbers of protozoa in some contaminated areas equalled or exceeded those found in surface soil. he abundance of protozoa in the biotreatment area was high enough that it would be expected to significantly reduce the bacterial community that was degrading the fuel. ittle reduction in hydraulic conductivity was observed, and no bacterial fouling of the aquifer was observed during biotreatment.