areas to be sampled in greater detail or will serve to define areas If more data is potentially (see Cleanup ranking below) to be cleaned. deemed necessary in order to better define cleanup areas, the survey / sampling process described above will be repeated. G. CLEANUP. 1. veyors. The border of areas to be cleaned will be marked by sur- The entire enclosed area will then be devegetated in the manner which causes the least disturbance to underlying soil. will be removed for mulching. Mowed vegetation Easily removable contaminated and noncon- taminated debris will also be taken away (see Part III B Criteria). Large structures and concrete slabs which likely were in place prior to the deposition of any plutonium and which do not interfere with Cleanup will not be removed unless "swipes" show excessive removable plutonium is present. ? 2. a Boas trations near the air-ground interface (the majority of the Pu suspect a a . For those Pu-contaminated areas. which have highest concen- . ‘¢e . u® dial - a A . . . ee ‘ 4 ‘ - , ; areas), the soil will be removed in thin layers, one layer at a time, to fet aan a ve Pe ~if/a The layers of soil and root mats will be Sort “ ( - ys fh woe " gs \ac. fassembled at central collection points, loaded into open bed trucks, hoe Sey Ce depth of at least 15 cm. . ye SY oy ee hoe as . ” * . eet ote > td 2 :, °3. . ° covered and transported to the ultimate disposal site. te bd er . CA tJ bu . For Pu-contaminated areas which have high Pu concentrations Ae ye at great depths, soil will be removed in conveniently thick layers until pene approaching the required excavation limits, then they will be removed in ory thin layers as described above. AP oe re * tS 7 “me ae ney j ’ ; REE aSre pases VAee ee Bi “¢ wy Revie ; estat . - an i 5 Saal? “hy9-3 ptCATFee ree, or PUA, Chie ie ee aee’ a oderee} HT sete funyRe Heratce oh a ee Be he eae eRHeBOPEe}Fe ENoceaneh ae 7