Agribusinesses now deal with various governmental regulations, such as clean air (odors and other emissions), clean water (surface and groundwater) and other environmental laws and permitting requirements. A significant amount of resources are also expended on litigation-related issues.
Golder Associates defines tunnelling excellence as Performance under pressure. This is because that of all underground openings, pressure tunnels provide the greatest design challenges. Failure to understand and address the technical issues of pressure tunnel design often leads to excessive leakage, water loss, slope failures and/or groundwater contamination.