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July 1993 through June 1994 for the environmental sampling <br />location (205) which approximates the nearest feasible <br />resident. <br />B. Inhalation <br />Airborne particulate sampling was conducted throughout the <br />July 1993 through June 1994 period at the location <br />proximate to the northeast property boundary (205) using a <br />continuously-operated, high-volume air sampler. Average <br />annual particulate concentrations at this location were: <br />Unat: 6.48E-5 pCi/m3 <br />Th230: 4.70E-5 pCi/m3 <br />Ra226: 4.11E-5 pCi/m~ <br />Average annual particulate concentrations at t1.ie <br />background location offsite on Pine Ridge Road (204) were: <br />Unat: 4.37E-5 pCi/m~ <br />Th230: 3.25E-5 pCi/m; <br />Ra226: 4.49E-5 pCi/m' <br />Subtracting the background concentrations from the gross <br />concentrations obtained at the assessment location leaves <br />net concentrations of: <br />Unat: 2.21E-5 pCi/m3 <br />Th230: -3.06E-5 pCi/m3 <br />Ra226: 1.45E-5 pCi/m' <br />Note: Values less than the detection limit were <br />computed as the LLD value. <br />C. Ingestion of Contaminated Vegetation <br />There is no crop production at the nearest feasible <br />residence, thereby eliminating this pathway from further <br />consideration. <br />D. Ingestion of Meat or Milk Grazed on Contaminated <br />Vegetation <br />