K5 million too much?

SOMETHING is not right with the cost of sealing the Tsak Road in Enga.
At current sealing rates it should cost around K5 million to carry out a double coat of bitumen, including priming works, on the 20km road.
I have heard that it is going to cost K10 million. What’s this for?
Are they doing hot-mix asphalt or what?  If this is true then the authorities, especially the Department of Works, should explain.

Concerned Taxpayer