and/or windrow mixing. field. The method used will be determined in the Encrypment of the contaminated material will be at the Cactus Crater site withne the mound adjusted to accommodate the volume of contaminated material generated by the cleanup operations. Consideration has been given to the use of LaCrosse Crater in addition to Cactus Crater but is not recommended since more time, materials and tet costs will be incurred under this scheme, a. See Appendix A. Recommended sequence of contaminated material placement is as follows: (1) of crater. Dump large pieces of radioactive material into bottom Material should be well dispersed to preclude subsequent material from "hang-up", prevent voids. Scrap metal should be cut up into pieces to The dispersion should be monitored to assure optimum placement of concrete slurry, Place concrete slurry with concrete pump and barge as shown on the drawings. : Ee. PAs aber et iw rngtt Awd tt : yet. Re RRR Poh Bg or + AE wes Re SSAA ao hee CPW, a ee, We y ee cay ya eReaeauoeReBRIER mt Fg) : * en tear esi ¥ ' Pene aSee geen se, Piri (approximate elevation +5,0). Be Fy eh the tidal level Concrete slurry shall be placed up to the top of & (2)