(1) (a) What are the detailed (i) plans, (ii) designs and (iii) solutions for the waterproofing of the Gautrain section of the tunnel between Park Station and E2, (b) when will construction (i) commence and (ii) end and (c) what are the respective costs to her department; (2) what are the detailed costs for each element of the waterproofing project; (3) what (a) processes, (b) procedures and (c) mechanisms exist to ensure that this remedial work will be a success?