PASS Contracts, page-101

This is not just for you punter but also all the potential and current investors unsure about pass , here is what is going to happen!

the tunnel boring machine will start boring and material will be extracted and removed to around five or six different sites depending on material type etc., there will be samples taken by independent contractors and tested for variouse things , if the material has a high or certain leven of acid sulphates then this material is classified as  acid suphate soils (ass) and in accordance to epa guidelines it is to be removed and stored in a epa approved site