Browsing by Author "Oyanameh, O. E."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Geotechnical Investigation of a Proposed Dam Project, Iyah Gbede, Kogi State, Nigeria
    (RSIS International, 2021) Oyanameh, O. E.; Olabode, O. O.; Korode, A. I.; Osisanya, O.W.; Fatoye, O. V.
    Geotechnical study was conducted at the proposed Dam project of Iyah Gbede, Ijimu Local Government Area of Kogi State with the aim of evaluating the subsoil layers that constitute the foundation soils and their competence as foundation soils for the civil engineering structures. The study involved drilling of three (3) boreholes and eleven (11) trial pits as well as Standard Penetration Test (SPT) to obtain the in situ strength parameters of the sandy layers. The lithological formations that constitute the study area layers are lateritic top soil, grey brown sandy clay, yellowish brown coarse sand, gravel and weathered rock. All the soils have average natural moisture content because it agrees with the average range of (5 – 15%) specified by Federal Ministry of Works and Housing FMWH, (1997) for civil engineering construction which is an indication of low water absorption capacities of the soil materials. The results of the geotechnical parameters of the soils obtained indicate good characteristics as construction materials with good bearing strength, good baseline information and foundation design for the establishment of the proposed dam site. .
  • No Thumbnail Available
    Item
    Integration of Heavy Metal Indexes and Health Risk Assessment in Groundwater Studies in Urban Area of Port Harcourt, Niger Delta Region of Nigeria
    (Anchor University, 2024) Osisanya, W.O.; Akpeji, B. H.; Agho, I.O.; Saleh, S.A.; Oyanameh, O. E.
    The Niger Delta region of Nigeria is faced with a serious environmental hazard from heavy metal (HM) pollution in groundwater, mostly as a result of local oil corporations' operations within the communities and its suburbs.. Physical characteristics such as pH, and Ec, heavy metals (Fe, Pb, Mn, As, Ni, Co, Cu, Zn, and Cr) were measured in 17 groundwater samples that were collected. The influence of heavy metals on groundwater chemistry is revealed by the principal component analysis (PCA) analysis results. According to the child population's dermal techniques, findings showed that 6 % of samples with low risk, 41 % with medium risk, and 51 % with high risk. Yet, 29 % of adults are at medium risk and 71 % of adults pose insignificant to low risk. According to the evaluated Carcinogenic Risk (CR) scores of the groundwater samples that were considered in this study, there was a very high propensity to effect the development of cancer in consumers, including adults and children. The research area's Heacy Metal Pollution Index ( HPI) ranges from 7.15 to 63.08with an average value of 27.16 according to the HPI data. This suggests that there is generally safe water because the HPI throughout the research area is below 100. Fe was found to be positive in 12 (70.59%) samples (FET/01,02,03,07,08,10,11,12,14,15,16, and 17) and zero in 5 (29.41%) samples (FET/04/05/06/09,13) based on the results of the Quantification of Contamination (QoC).For Ni, 58.82% of samples (FET/01, 02, 03, 08, 09, 10, 11, 12, 14, and 16) had negative QoC scores, while seven (41.18%) samples (FET/04, 05, 06, 07, 13, 15, and 17) had positive QoC scores. These findings underscore the urgent need for continued groundwater monitoring and implementation of effective purification technologies before consumption to mitigate health risks associated with heavy metal contamination in the Niger Delta region.. The present investigation concluded that this location's groundwater needed to have its HM level measured