Some further literature that may be of use:
Byron, H (2000) Biodiversity Impact - Biodiversity and Environmental Impact Assessment: A Good Practice Guide for Road Schemes. The RSPB, WWF-UK, English Nature and the Wildlife Trusts, Sandy, UK.
Rajvanshi A., Mathur V.B., Teleki G. C., Mukherjee S.K. (2001) Roads, Sensitive Habitats and Wildlife: Environmental Guideline for India and South Asias. Wildlife Institute of India, Dehradun and Canadian Environmental Collaborative Ltd., Toronto. document
Slootweg, R and Kolhoff, A (2003) A generic approach to integrate biodiversity considerations in screening and scoping for EIA. Environmental Impact Assessment Review 23: 657-681. document
Treweek, J (1999) Ecological Impact Assessment Blackwell Science, Oxford, UK. document