International Journal of Engineering Research and Advanced Technology (IJERAT) E-ISSN : 2454-6135 DOI: 10.31695/IJERAT.2020.3597 Volume.6, Issue 1 January -2020 www.ijerat.com Page 9 Licensed Under Creative Commons Attribution CC BY Post-Project Environmental Impact Evaluation of Ota Industrial Housing Estate on the Localized Environment and Environs in Ogun State, Nigeria *Peter Ibhadode 1 A. P. Ibhadode 2 Osagie Ibhadode 3 O. M. Sosanolu 4 Independent Researcher and Safety, Health & Environmental (SHE) Officer 1, 2 ; Research Engineer 3 , Research Officer 4 * Hafalix Nigeria Limited, Port Harcourt, Nigeria 1 IHE Delft Institute of Water Education, Delft, The Netherland 2 Cintojon Company (Nigeria) Limited, Ota-Lagos, Nigeria 2 Nigerian Building and Road Research Institute (NBRRI), Abuja, Nigeria 3, 4 _______________________________________________________________________________________ ABSTRACT In this research paper, twelve (12) consecutive weekly field-studies were carried-out within a study-period of three (3) months to determine the current baseline environmental data of the study-area—'Ota Industrial Housing Estate and Environs' by conducting a Post-Project Environmental Impact Evaluation (EIE) of the Estate's industrial wing on its residential wing —which was divided into three Catchments (Catchment 1, Catchment 2 and Catchment 3) in addition to Catchment 4 (i.e. its Environs) which is a proximal neighbouring community to the study-area called ‘Obasanjo locality’. Consequently, standard experimental procedures were engaged to determine the baseline data values of the selected biophysiochemical environmental parameters of the study area, which were then compared with the values obtained at the Control-environment [i.e. ‘Atan locality’ which is a distant community located about 15 km from the study-area] and/or with the benchmark values/limits recommended by global and national standardizing bodies (organizations) [such as the ' ' WHO , ' ' ISO , ' ' OSHA , ' ' ASTM , ' ' APHA , ' ' DPR , ' ' SON and ' ' FMEnv ] for human safety. Based on the experimental results obtained, some of the inferences made are summarily stated below. Majority of the measured microclimatic, acoustic and outdoor air quality parameters are higher than the standard recommended limits and the control environment’s values. The Soil Nutrients' and Heavy metals' concentrations are randomly distributed. The predominant land-use type is 'Residential' while the least is 'Educational'. The predominantly occurring vegetation is 'Elephant grass (Botanical name: Permisetum Purpuretum)'. Apart from pH , Electrical Conductivity, Temperature, Dissolved Oxygen ( ) DO and Biochemical Oxygen Demand ( ) BOD , all the other Groundwater quality assessment parameters are higher than the standards’ recommended limits. Thus, the industrial wing of ‘Ogun State Industrial Housing Estate’ environmentally impacts its residential wing and environs negatively. Key Words: Environmental Impact Evaluation, Pollution, Human Safety, Air Quality, Groundwater. _________________________________________________________________________________________ 1. INTRODUCTION There is no doubt that in most developing countries, certain national developmental strides (achievements) such as increased industrial productivity, mining activities and exploration of natural resources etc.; which are aimed at achieving local consumer- product sufficiency and balancing bilateral trade deficits with other nations, also come with adverse environmental impacts. More often than not, in most cases of unregulated industrialization, mining and natural resource exploration etc., the environment is at the receiving end, with man bearing the brunt, by paying the ultimate price with his health—due to the numerous associated hazardous environmental conditions including: Noise pollution [1], [2], [3]; low outdoor Air Quality Index [4], poor natural ventilation performance [5], inadequate indoor illumination [6], consumption of contaminated water [7] and [8], indoor exposure to radiological hazards from unexpected sources like building materials [9] and indiscriminate industrial waste disposal [10], [11], [12] [13], which can be significantly controlled by the safe recycling of wastes to transform them into useful products [14] and [15]. At the moment, these and a number of other factors are considered to be of critical importance, as both the Natural and the Built environmental experts clearly harp on the need to have them factored-in them in before, during and after the design and execution of developmental projects [16] and [17]; while prioritizing eco-friendly project execution methods & strategies over others [18].