ENVIRONMENTAL IMPACT MITIGATION PRACTICES AND CONSTRUCTION PROJECT DELIVERY IN AKURE SOUTH L/G AREA, ONDO STATE, SOUTHWEST NIGERIA

Abstract

The construction industry is an important sector in global economic and social development. This sector significantly impact the environment, contributing approximately 23% of air pollution, 40% of water pollution, and 50% of landfill waste. This study investigated the environmental impact mitigation practices within construction project delivery, particularly focusing on the effectiveness of Environmental Impact Assessments (EIAs) in minimizing adverse effects. Findings revealed that construction activities predominantly contribute to air, water, and noise pollution, soil erosion, habitat destruction, and improper waste disposal, with pollution ranked as the most significant impact with a mid-index (RII) of 4.58 followed by soil erosion ( RII of 4.54) and habitat destruction (RII of 4.38). Despite the recognized importance of EIAs in identifying and managing these environmental impacts, their implementation is often inconsistent, with a moderate average index of 3.2 indicating that EIAs are not always conducted consistently before project execution. The study further revealed that financial constraints, stakeholder awareness, and regulatory complexities, are factors that hinder effective environmental management in construction. It emphasizes the need for more rigorous and inclusive EIA practices that engage local communities and incorporate long term sustainability goals. The study therefore suggest that an adequate monitoring system must be put in place to ensure that the mitigation measures outlined in the EIA are followed throughout the construction process.