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Method B – Permanent binder course reinstatement

The backfill, sub-base, base and binder course must be reinstated to a permanent standard at the first visit.
The permanent binder course material, or an alternative interim material, must be extended to the surface as the interim surface course, with or without a thin separating material layer of sand at the position of the binder course/surface course interface.
On the second visit, all interim surfacing materials must be removed to the top of the binder course, typically by cold planing, and a permanent surface course must be laid.
Where a sand separation layer is present, the sand must be removed, the surface brushed clean and a bond coat applied before reinstating the permanent surface course.