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\ back from the ends of each application so that flow through the sprays may be started and stopped on the paper, and that all sprays will be operating at full force on the surface to be treated. Immedi­ately after the application* the building paper shall be removed and destroyed. All spots missed by the distributor shall be properly treated with bituminous material. (3) ihe emulsified asphalt shall be applied between £o F and lkO F as directed by the Engineer. c. Cover Aggrega te. , (1) Spreading - Ihe covering material shall be spread uniformly over the bituminous material within twenty minutes after application of tbs bituminous material. Spreading shall be done uniformly with aggregate spread­ing equipment. Trucks spreading aggregate shall be operated backward covering the bituminous material ahead of the truck wheels. The aggregate shall be placed in sufficient quantities, within the limitations specified in Paragraph'=0? in this section of ,these specifications (below), to provide a small roll or surplus material in front of the broom drag thus pre­venting the brooms from turning over the coated aggre­gate. Areas having insufficient cover shall be back-spotted or sprinkled with additional aggregate by hand during the operations whenever necessary. (2) Brooming and Rolling — After sufficient aggregate is spread to prevent pickup of the bituminous material the aggregate shall be rolled three passes with a pneumatic roller followed by at least two passes with a steel wheel roller before commencing broom dragging. Broom dragging shall continue as long as is necessary to uniformly distribute the cover aggregate over the surface. Broom dragging and rolling shall continue until the surface material is distributed and worked in, to the satisfaction of the Engineer, After a minimum duration period of three weeks,.all surplus aggregate shall be sweptt off the surface and stock piled in the location indicated on the plans or as directed by the Engineer prior to final acceptance