- yy vo Runit (Yvonne) Cleanup and Crater Containment 423 facilities had to be constructed just north of the hotline. During tremie operations, transit-mix trucks would be loaded at the batch plant with contaminated soil, cement, and attapulgite. These materials would be charged with water and mixedas the truck was driven from the batch plant to the crater, where the mix would be discharged into the tremie pump. Batch plant facilities included a sprinkler system to contro! dust, a t-1/2inch screening plant to separate large rocks, branches, and similar extraneous material from the contaminated soil, feeder belts, and the plant itself. Materials placed in the hoppers were measured and gravity fed into the transit-mix trucks (Figure 8-16). Foundations and pads for the batch plant facilities were constructed in February 1978 by personnel from ~ Company B, USAE, assigned to assist Company A in Runit site preparation work. They also completed the large cement storage S , warehouse, installed a power distribution system, and constructed the northern island road system while Company A completed installation of the batch plant and rock crusher plant.39 Before work could begin on the haul roads between the batch plant and the crater, an IMP survey of the routes was required. Since DOE’s soil characterization work on Runit was still being delayed, priorities were adjusted to permit the survey and ~ w completion of the roads.40 Runit site construction and the crater containment operations required large quantities of aggregate and rock. Until a quarry could be opened on FIGURE 8-16. BATCH PLANT OPERATION.