2.2 Haulage routes, vehicles and construction plant 12 2.2.1 Roads, surfaces and public highways 12 2.2.2 Static and mobile combustion plant emissions 14 2.2.3 Tarmac laying, bitumen surfacing and coating 15 2.3 Materials handling, storage, stockpiling, spillage and disposal 16 2.3.1 Handling, storage, stockpiling and spillage of dusty materials16