An Evaluation of the Role of ISO 14001 Environmental Management Systems in Enhancing Environmental Impact Assessment Processes in Nigeria

This study examines how ISO 14001 Environmental Management Systems (EMS) enhance Environmental Impact Assessment (EIA) processes in Nigeria. Using a mixed-methods approach involving interviews, surveys (n=127), and document analysis across oil and gas, manufacturing, infrastructure, and mining sectors, results show that EMS-certified organisations outperform non-EMS entities in implementing mitigation measures (87% vs. 54%), conducting environmental audits (3.2 vs. 1.1 per year), resolving non-compliance (30 vs. 75 days), and disclosing monitoring results (76% vs. 29%). Case studies, including the NLNG Train 7 Project and Dangote Cement operations, highlight improved environmental performance when EMS principles are integrated into EIA follow-up. Key barriers include certification costs, limited technical capacity, and weak regulatory linkages. The study recommends mandating EMS alignment in EIA approvals, enhancing capacity, and offering incentives to strengthen environmental governance.