Pavillion Groundwater Investigation Pavillion Wyoming

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Pavillion Groundwater Investigation Pavillion Wyoming. Phase I Sampling Results August 11, 2009. Sampling Objectives. Determine if contamination is present in domestic wells Determine contaminant characteristics Determine potential impacts to public health and the environmennt. CLP Lab Data - PowerPoint PPT Presentation


  • Pavillion Groundwater InvestigationPavillion WyomingPhase I Sampling ResultsAugust 11, 2009

  • Sampling ObjectivesDetermine if contamination is present in domestic wells

    Determine contaminant characteristics

    Determine potential impacts to public health and the environmennt

  • CLP Lab DataSVOC + TICsVOCs + TICsPesticidesPCBsTAL MetalsR8 Lab DataLow SVOC TICsLow VOC TICsTOF-MSPMBEAnionsWater ChemistryCom Lab DataGRODROBAC-TDetermineRelevantDataProcess DataValidationInterpretationRelevanceMergeDataSourcesSelect Wells andSources for FurtherInvestigationChoose Tests/Methods for FurtherInvestigation

  • EPAR8Lab:TICs


    Sample IDTIC Compoundg/LMatch Quality

    PGDW04Cyclopentasiloxane-decamethyl0.33 ug/L91%Adamantanes

    2-butoxy ethanol phosphate0.20 ug/L93%Polymerizers

    13-Docosenamide0.23 ug/L93%Volatile Compound DNR

    PGDW07Cyclopentasiloxane-decamethyl0.28 ug/L91%Column Bleed (siloxane) DNR

    13-Docosemide0.15 ug/L94%Mustard?

    PGDW05Cyclopentasiloxane-decamethyl0.13 ug/L91%

    1,3-dimethyl adamantane0.10 ug/L91%

    Bisphenol-A6.10 ug/L87%

    PGDW10Cyclopentasiloxane-decamethyl0.39 ug/L91%

    1,1,2,2-Tetrachloroethane1.12 ug/L97%

    2-butoxy ethanol phosphate0.58 ug/L93%

    13-Docosemide0.12 ug/L93%

    PGDW17Cyclopentasiloxane-decamethyl0.53 ug/L91%

    1,1,2,2-Tetrachloroethane0.86 ug/L97%

    1,2,3-Trichloropropene0.36 ug/L90%

    13-Docosemide0.13 ug/L83%

    PGDW20Cyclopentasiloxane-decamethyl0.32 ug/L91%

    1,1,2,2-Tetrachloroetlhane0.15 ug/L94%

    2-methyl adamantane0.20 ugL91%

    PGDW21Cyclopentasiloxane-decamethyl0.24 ug/L91%

    13-Docosemide0.35 ug/L93%

    PGDW22Cyclopentasiloxane-decamethyl0.41 ug/L91%

    1,1,2,2-Tetrachloroethane0.62 ug/L97%

    1,2,3-Trichloropropene0.33 ug/L91%

    13-Docosemide0.20 ug/L94%

    PGDW23Cyclopentasiloxane-decamethyl0.47 ug/L91%

    1,1,2,2-Tetrachloroethane0.12 ug/L94%

    2,4-bis(1-phenyl)-phenol0.15 ug/L86%

    13-Docosemide0.29 ug/L93%

    PGDW301,1,2,2-Tetrachloroethane>100 ug/L97%

    Pentachloroethane0.17 ug/L98%

    Tetrachlorobutadiene0.27 ug/L99%

    PGDW32Cyclopentasiloxane-decamethyl0.45 ug/L91%

    1,1,2,2-tetrachloroethane0.21 ug/L97%

    1,3,5-Trimethylbenzene0.16 ug/L97%

    PGDW35Cyclopentasiloxane-decamethyl0.56 ug/L91%

    PGDW38Cyclopentasiloxane-decamethyl0.52 ug/L91%

    1,1,2,2-Tetrachloroethane0.35 ug/L97%

    1,2,3-Trichloropropene0.25 ug/L87%

    PGDW29Cyclopentasiloxane-decamethyl0.63 ug/L91%

    13-Docosemide0.92 ug/L93%



  • VOC & SVOC TICs: Summary

  • Methane Detections

  • Summary and Interpretation of ResultsOur results show most wells sampled have no apparent health concerns

    11 wells have insufficient data for us to assure well owners of no health concerns from drinking their well water (EPA is working with those well owners)

    Potentially a connection between our results and oil and gas production activities. We cannot pinpoint any specific source at this time.

  • Next StepsFurther Sampling for specific drinking water wells and potential sources

    Meeting with stakeholders to determine the best way to approach the next sampling effort

    Parallel issue: EPA will be talking with EnCana to evaluate and reduce any potential overall adverse impacts of oil and gas production.