The area will be fine surveyed and isopleths drawn which define the region which exceeds local background. (>) ; Vertical soil profiles will be taken to evaluate the effectiveness of excavation as a means of reducing the Resuspension Potential. (c) An-iterative excavation plan will be executed to: 1. Reduce the half hectare area average concentration 2. Reduce the average concentration of the "defined below 100 pCi/g. region'' to some lower number which shall be determined by cost-benefit considerations but will usually not be below local background. (d) The region will be resurveyed and the results documented. (3) Condition C: When a quarter hectare is determined by either direct measurement or extrapolation to exceed 40 pCi/g (at the 67 percent confidence level number), the following actions will be taken: (a) The area will be fine surveyed and isopleths drawn which define the region which exceeds local background. (2} ; Vertical soil profiles will be taken to evaluate the effectiveness or excavation as a means of reducing the Resuspension Potential. (c} An iterative excavation plan will be executed to: 1. Reduce the quarter hectare area average concentration C-2-E-6 “ o,f pene ri vw: aid 7, eg ans . SC ES ARI EY wena «aus 2 *, ye ENT ee SR ee Use fe ty 1 Poe . . 74. + ‘ ~~ 7 4 ‘ ey tM Re ee ’ a ~~ ~~ ET 2 7 a ee ee le we ease ater Re ge re pe wy . . oa . ety aie : |e (a)