I am working on roadway reconstruction in the Caribbean where we are using a 12" S-III asphaltic base and a 5" S-I surface course. The Sub-base is compacted crushed rock. The contractor placed 1 km of the surface course over the sub-base. Since the design mix of the S-I uses a smaller gravel, we thought that it would inappropriate for use under the S-III lift(which uses a larger gravel)... what do you think? [email protected]