This report gives a comprehensive checklist of good practice procedures for road engineers of rural road drainage projects; projects that do not require a formal EIA, but would still benefit from consideration of environmental issues in the manner described above. It is not intended to provide detailed designs for all eventualities - indeed it is probably impossible to do so, but it gives an overview of the approach to be taken.
Firstly, sensitive environments that might warrant special protection, or need to be avoided completely, are identified. Secondly, site survey and data assembly activities are described to ensure that the road engineer gains a full understanding of the existing value of the local environment. Thirdly, methods of mitigating potential adverse effects through informed decision making at the road planning and design stages are presented. The report gives a checklist of issues that either need to be avoided or considered carefully when aligning and/or designing a road. Methods of enhancing or reconstructing natural environments are also provided for consideration at the design stage. Finally, ways of ensuring decisions made during the design stage are carried forward into the construction and maintenance phases are presented.
Griffiths, P.J.; Hird, A.B.; Tomlinson, P. Rural road drainage design for environmental protection. (2000)