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EFFECT OF GROUND-WATER REMEDIATION ACTIVITIES ON INDIGENOUS MICROFLORA
Citation:
AzadpourKeeley*, A. EFFECT OF GROUND-WATER REMEDIATION ACTIVITIES ON INDIGENOUS MICROFLORA. Presented at 2004 Society of Industrial Microbiology & Biotechnology Annual Mtg, Anaheim, CA, July 25 - 29, 2004.
Impact/Purpose:
To inform the public.
Description:
The United States Environmental Protection Agency (EPA), working with the Interagency DNAPL Consortium, completed an independent evaluation of microbial responses to ground-water remediation technology demonstrations at Launch Pad 34 at Cape Canaveral Air Station in Brevard County Florida. The three selected technologies were permanganate-based in-situ chemical oxidation (ISCO), six-phase heating (SPH), and steam injection (SI).
Comprehensive spatial and temporal screening data suggested that the technology applications did not significantly alter the site's microbial community structure. PLFA distribution for each of the three demonstration areas also indicated a high variation in biomass at each sampling event and depth. The ISCO was the only technology found to stimulate microbial abundance; a significant initial increase in biomass was observed following completion of the ISCO demonstration. This behavior is consistent with findings from other permanganate-based chemical oxidation applications. Biomass and the proportion of monounsaturates returned to normal levels shortly after chemical injections ceased.