Problems overcome include: dealing with contaminated materials; working near and in SAC (Special Area of Conservation) & SSSI; dealing with various businesses and local residents and various planning conditions.
As part of a major flood alleviation scheme in Newport, McCarthy's were contracted to undertake all enabling works, drainage, earthworks.

| Client Organisation | Natural Resources Wales |
| Main Contractor | Galliford Try |
| Contract Value | Circa £1.3 million |
| Contract Period | August 2016 - ongoing |
| Form of Contract | NEC3 Option A |
| Address | Crindau, Newport, NP20 5NH |