Assessment of potential for natural attenuation of chlorinated ethenes and ethanes in ground water at a petrochemical reclamation site, Harris County, Texas

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dc.acquisition-srcen_US
dc.call-noGB 701 .W375 no.00-4121 GBAYen_US
dc.contract-noen_US
dc.contributor.authorHuff, Glenn F.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:37:56Z
dc.date.available2010-02-15T17:37:56Z
dc.date.issued2000en_US
dc.degreeen_US
dc.description23 pgs.en_US
dc.description-otheren_US
dc.description.abstractRedox conditions in the numerous sand channels zone beneath a petrochemical reclamation site in Harris County, Texas, range from sulfate reducing to methanogentic as indicated by the presence of methane in ground water and the range of molecular hydrogen concentrations. Assessment of the potential for reductive dechlorination using BIOCHLOR as a screening tool indicated conditions favoring anaerobic degradation of chlorinated organic compounds in the numerous sands channels zone. Evidence supporting reductive dechlorination includes apparently biogenic cis-1,2 dichloroethene; an increased ratio of 1,2 dichloroethane or 1,1,2 trichloroethane down gradient from the assumed containment source area; ethane and methane concentrations greater than background concentrations within the area of the containment plume; and a positive correlation of the ratio of ethane to vinyl chloride as a function of methane concentrations. The body of evidence presented in this report argues for hydorgenolysis of trichloroethane to cis-1,2 dichloroethene; of 1, 1,2, trichloroethane to 1,2 dichloroethane; and of vinyl chloride to ethane within the numerous sand channels zone. Simulations using BIOCHILOR yielded apparent first order decay constants for reductive dechlorination in the sequence Tetachloroethene trichloroethene Cis-1,2 dichloroethene vinyl chloride ethene with the range of literature values reported for each compound and apparent first order decay constants for reductive dechlorination in the sequence 1,1,2, trichloroethane 1,2 dichloroethane slightly greater than literature values reported for each compound along the upgradient segment of a simulated ground water flow path. Except for vinyl chloride, apparent rates of reductive dechlorination for all simulated species show a marked decreases along the downgradient segment of the simulated ground eater flowpath. Evidence for reductive dechlorination of chlorinated ethenes within the numerous sand channels zone indicates potential for natural attenuation of chlorinated ethenes. Reductive dechlorination of chlorinated ethenes apparently occurs to a lesser extent, including relatively less potential for natural attenuation of chlorinated ethenes. Additional data are needed on the concentrations and distribution of chlorinated ethenes and ethenes in individual fine minimum reporting levels for future chloroethane analyses, might enable a more complete and quantitative assessment of the potential for natural attenuation at the site.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeHoustonen_US
dc.geo-codeHarris Countyen_US
dc.geo-codeHarrisen_US
dc.geo-codeTexasen_US
dc.geo-codeUnited Statesen_US
dc.history10/18/05 easen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/26282
dc.latitudeen_US
dc.locationGBIC Circulating Collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.placeAustin, TXen_US
dc.publisherU.S Department of the Interior, U.S. Geological Surveyen_US
dc.relation.ispartofseries9184.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesWater resources investigation report no.00-4121en_US
dc.subjectchlorohydrocarbonsen_US
dc.subjectenvironmental aspectsen_US
dc.subjectgroundwateren_US
dc.subjectpurificationen_US
dc.subjectnatural attenuationen_US
dc.subjecthazardous wastesen_US
dc.titleAssessment of potential for natural attenuation of chlorinated ethenes and ethanes in ground water at a petrochemical reclamation site, Harris County, Texasen_US
dc.typeBooken_US
dc.universityen_US
dc.vol-issueen_US

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