EIA application in China's expressway infrastructure: clarifying the decision-making hierarchy.

Area of Science:

• Environmental Science
• Environmental Law
• Transportation Engineering

Background:

• China's Environmental Impact Assessment (EIA) Law, enacted in 2003, mandates assessments for road transport infrastructure.
• Environmental Impact Assessments (EIAs), encompassing project-level and strategic environmental assessments (SEAs), are integral to expressway planning.
• SEAs are utilized for provincial-level expressway network (PLEI) plans, while project EIAs address specific development projects within these plans.

Purpose of the Study:

• To investigate the current application of EIAs in China's expressway infrastructure development planning.
• To identify challenges impacting the quality of EIA implementation in this sector.
• To propose solutions for improving EIA practices and environmental outcomes.

Main Methods:

• Analysis of three case studies: one expressway project EIA and two PLEI plan SEAs.
• Examination of current EIA application procedures in expressway planning.
• Identification and analysis of problems and their root causes within EIA processes.

Main Results:

• Several issues significantly affecting the quality of EIA application in expressway development were identified.
• Root causes for these identified problems were analyzed.
• Specific recommendations for enhancing EIA practice were developed.

Conclusions:

• The study highlights critical areas for improvement in China's EIA system for expressway infrastructure.
• Addressing identified problems can lead to better decision-making in infrastructure planning.
• Enhanced EIA practices are crucial for improving the environmental performance of expressway development.