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PUBLIC HEALTH ASSESSMENT

OKLAHOMA REFINING COMPANY
CYRIL, CADDO COUNTY, OKLAHOMA


APPENDICES

APPENDIX I
FIGURES


Figure 1. Oklahoma Refining Company



Figure 2. Site-Specific map of the ORC
Superfund Site indicating waste sources.



Figure 3. Location of LNAPL Detected in
Rush Springs Sandstone Aquifer



Figure 4. Oklahoma Refining Company -
Active Area



Figure 5. Oklahoma Refining Company -
Inactive Area



APPENDIX II
CONTAMINANT TABLES

Only contaminants at levels of concern for which there is a completed or potential exposurepathway are discussed in the contaminant tables. For purposes of these estimations, an adult is assumed to weigh 70 kg (150 pounds), and a child is assumed to weigh 10 kg (22 lbs.).


The data tables include the following abbreviations:
  • CREG
  • =Cancer Risk Evaluation Guide
  • EMEG
  • =Environmental Media Evaluation Guide
  • MDL
  • =Minimum Detection Limit
  • ND
  • =Not Detected
  • ppm
  • =parts per million
  • ppb
  • =parts per billion
  • RMEG
  • =Reference Dose Media Evaluation Guide


    Table 1.

    WASTES SOURCES: ON-SITE SOILS
    INORGANIC COMPOUNDS
    1991 REMEDIAL INVESTIGATION REPORT
    CONTAMINANT CONCENTRATION
    RANGE
    COMPARISONVALUE FOR
    INGESTION -
    REFERENCE ADULT

    ppmppmSource
    ArsenicND - 2000.4CREG
    Barium1.5 - 54649,000RMEG
    BerylliumND - 1.30.16CREG
    Chromium1.3 - 24,020700,000*RMEG
    Lead5.1 - 20,530NoneNone

    * Assumes chromium III species in soil.


    Table 2.

    WASTES SOURCES: ON-SITE SOILS
    ORGANIC COMPOUNDS
    1991 REMEDIAL INVESTIGATION REPORT
    CONTAMINANTCONCENTRATION
    RANGE
    COMPARISON VALUE
    FOR INGESTION -
    REFERENCE ADULT

    ppmppmSource
    BenzeneND - 4024CREG
    Benzo(a)
    anthracene
    ND - 300None
    Benzo(a)pyreneND - 2800.096CREG
    Benzo(b)
    fluoranthene
    ND - 120None
    Benzo(k)
    fluoranthene
    ND - 40None
    ChryseneND - 456None
    Dibenzo(ah)
    anthracene
    ND - 34None
    Indeno(1,2,3
    cd)pyrene
    ND - 84None



    Table 3.

    ON-SITE SURFACE SOILS
    INORGANIC COMPOUNDS
    1991 REMEDIAL INVESTIGATION REPORT
    CONTAMINANTCONCENTRATION
    RANGE
    COMPARISONVALUE FOR
    INGESTION -
    REFERENCE ADULT

    ppmppmSource
    ArsenicND - 3450.4CREG
    Barium46 - 144649,000RMEG
    BerylliumND - 1.40.16CREG
    Chromium5.5 - 310700,000RMEG
    Lead6.7 - 1119None



    Table 4.

    ON-SITE SURFACE SOILS
    ORGANIC COMPOUNDS
    1991 REMEDIAL INVESTIGATION REPORT
    CONTAMINANTCONCENTRATION
    RANGE
    COMPARISONVALUE FOR
    INGESTION -
    REFERENCE ADULT

    ppm ppmSource
    BenzeneND - 0.0924CREG
    Benzo(a)
    anthracene
    ND - 5.3None
    Benzo(a)pyreneND - 3.5 0.096CREG
    Benzo(b)
    fluoranthene
    ND - 6.5None
    Benzo(k)
    fluoranthene
    NDNone
    ChryseneND - 24None
    Dibenzo(ah)
    anthracene
    ND None
    Indeno(1,2,3 cd)
    pyrene
    ND None



    Table 5.

    ON-SITE SEDIMENT
    (Seeps & drainage ditch)
    1991 REMEDIAL INVESTIGATION REPORT
    CONTAMINANTCONCENTRATION
    RANGE
    COMPARISONVALUE FOR
    INGESTION -
    REFERENCE ADULT

    ppmppmSource
    ArsenicND - 230.4CREG
    Barium36.00 - 23649,000RMEG
    Beryllium0.160.16CREG
    Chromium4.60 - 1533700,000RMEG
    Lead8.3 - 130None
    Organic compounds of concern were not detected or did notexceed comparison values in on-site sediment.



    Table 6.

    ON-SITE CONTAMINANT CONCENTRATIONS INWATER
    1991 REMEDIAL INVESTIGATION REPORT
    INORGANIC COMPOUNDS
    CONTAMINANTCONCENTRATION RANGE
    Groundwater*Surface water

    ppbppb
    ArsenicND - 4950ND - 96,550
    BariumND - 682020 - 1340
    BerylliumND - 70ND - 160
    ChromiumND - 570ND - 1340
    LeadND - 24,520ND - 610
    * maximum values may represent concentrations floating onthe water table in LNAPLs or in the hydrocarbon layer.

    No ATSDR comparison values are listed becausegroundwater and surface water were and are not being usedby people as drinking water.




    Table 7.

    ON-SITE CONTAMINANT CONCENTRATIONS IN WATER
    REMEDIAL INVESTIGATION REPORT
    1991 REMEDIAL INVESTIGATION REPORT
    ORGANIC COMPOUNDS
    CONTAMINANTCONCENTRATION RANGE
    Groundwater*Surface water:
    Drainage Ditch,
    Seeps

    ppbppb
    BenzeneND - 13,000,000ND - 130
    Benzo(a)anthraceneNDND - 3
    Benzo(a)pyreneNDND - 2
    Benzo(b)
    fluoranthene
    NDND
    Benzo(k)
    fluoranthene
    NDND
    ChryseneNDND - 9
    Dibenzo(ah)
    anthracene
    NDND
    Indeno(1,2,3 cd)
    pyrene
    NDND
    * maximum values may represent concentrations floating onthe water table in LNAPLs or in the hydrocarbon layer.



    Table 8.

    OFF-SITE CREEK SEDIMENT
    1982-1983 INSPECTION REPORT
    1991 REMEDIAL INVESTIGATION REPORT
    CONTAMINANTCONCENTRATION
    RANGE
    COMPARISON VALUE
    FOR INGESTION-
    PICA CHILD

    ppmppmSource
    Arsenic*3.3 - 24.50.4CREG
    Barium*ND - 170140RMEG
    Chromium7 - 21
    4.70 - 17
    2000RMEG
    LeadND - 25
    ND - 20
    NoneNone
    * Local background concentrations of arsenic and barium in creeksediment also exceed the comparison values.

    No volatile or semivolatile organic compounds exceededcomparison values for the pica child. If there is no reportedconcentration range for a contaminant from the 1991 RI, it wasanalyzed for but did not exceed a comparison value.




    Table 9.

    OFF-SITE CREEK WATER
    1982-1983 INSPECTION REPORT
    1984 MONITORING PROGRAM: Arsenic and chromium mean conc. only
    1991 REMEDIAL INVESTIGATION: Not listed because Conc. < MDL
    CONTAMINANTCONCENTRATION
    RANGE
    COMPARISONVALUE FORINGESTION*

    ppbppbSource
    ArsenicND - 280
    14.03 - 67.81
    0.02CREG
    BariumND - 3210700RMEG
    Beryllium<MDL0.0081CREG
    ChromiumND
    <CV
    10,000RMEG
    Lead<MDLNoneNone
    * Based on use as drinking water
    ** Local background concentrations of arsenic and barium increek water also exceed the comparison values.
    No organic compounds in the 1991 RI for creek water exceededcomparison values for the pica child.



    APPENDIX III

    PATHWAYS


    Table I.

    COMPLETED EXPOSURE PATHWAYS
    PATHWAYNAME EXPOSURE PATHWAY ELEMENTS TIME
    SOURCEPOINT(S) OF
    EXPOSURE
    ROUTE OF
    EXPOSURE
    EXPOSEDPOPULATION
    Creek WaterOklahomaRefiningCo. (ORC)Off site in GladysCreek &tributariesIncidental
    Ingestion,
    DermalContact
    Children/adults using (orplaying in) the creekPast*
    Creek SedimentORCOff site in GladysCreek &tributariesIncidentalIngestion,
    DermalContact
    Children/adults using (orplaying in) the creekPast*
    Ambient Air-

    General airquality may bepoor because ofindustries.

    ORC andothersOn site,
    Off site
    InhalationAll historical on-siteworkers and off-siteresidents in the generalvicinity of the refineryduring its operationPast**
    * Exposure could also occur in the present or future if on-site traps release contaminants to the creek or ifpreventative measures are not taken during remedial activities.

    ** Possible current and future exposures due to the active refinery.




    Table II.

    POTENTIAL EXPOSURE PATHWAYS*
    PATHWAY
    NAME
    EXPOSURE PATHWAY ELEMENTSTIME*

    SOURCEPOINT OFEXPOSUREROUTE OFEXPOSUREEXPOSEDPOPULATION
    Waste Material OklahomaRefining Co.(ORC)On-site pits, ponds,trapsInhalation,
    Ingestion,
    Dermal Contact
    Site workers,
    Trespassers
    Primarily
    Past
    SedimentORCOn-site drainageditch & banks aboveGladys CreekIngestion,
    Dermal Contact
    Site workers,
    Trespassers
    Primarily
    Past
    SoilsORCnear tanks, north ofrailroad, exclusiveof wasteimpoundmentsIngestion,
    Dermal Contact,
    Inhalation
    Site workers,
    Trespassers
    PrimarilyPast
    Surface WaterORCOn-site ponds &trapsDermal Contact Site workers,
    Trespassers
    PrimarilyPast
    Groundwater ORCResidencesDermal Contact,
    Inhalation
    ResidentsFuture**
    Food ChainORCOff site in nearbyfields irrigated withcreek water. Onsite.IngestionThose eating crops orcattle fed crops fromlands irrigated by GladysCreek water during theORC operation.Past
    * During remedial activities at the site, we have assumed that on-site remedial workers will be adequately protected andthat appropriate measures and controls will be used to insure the protection of public health. We have also assumed thatappropriate deed restrictions will be applied to prevent future exposure to on-site contaminants.

    **Future exposures could occur if contamination migrated off-site and private wells in the contaminated area were stillused for non-potable purposes.




    Table III.

    ESTIMATED POPULATION FOR COMPLETED AND POTENTIAL EXPOSURE PATHWAYS
    Exposed Populations and Potentially ExposedPopulationsAffected by a Completed orPotential Exposure Pathway* For:
    LocationApprox.
    No. ofPersons
    Heavy Metals(lead, chromiumetc.) PAHs
    Residents downstream of ORC on GladysCreek Past20Creek
    Sediment
    No record
    Other nearby residentsduring operation ofORCwith
    on-site exposure
    (intruders)
    25Air
    Soil
    Surface Water

    Food chain
    Air
    Soil
    Surface Water
    without on-siteexposure500Air
    Soil
    Food chain
    Air
    Previous Refinery Workers250 Air
    Soil
    Surface Water
    Air
    Soil
    Surface Water
    Current Refinery Workers100?Possibly Air,
    Soil
    Surface Water
    Possibly Air,
    Soil
    Surface Water

    * potential exposure pathways are shown in italics


    APPENDIX IV

    PUBLIC HEALTH EDUCATION FACT SHEET

    The following section was not availablein electronic format for conversion to HTML at the time of preparation of this document. To obtain a hard copy of the document, please contact:

    Agency for Toxic Substances and Disease Registry
    Division of Health Assessment and Consultation
    Attn: Chief, Program Evaluation, Records, and Information Services
    Branch, E-56
    1600 Clifton Road NE, Atlanta, Georgia 30333


    Table of Contents

      
     
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