General geology and water quality analysis of abandoned dumpsite with its potential health hazard impact at Kampung Pantai Dasar, Kota Bharu, Kelantan

The study area was located at Kampung Pantai Dasar, Kota Bharu with the coordinate of longitude extended from 109°17'30"E to 102°19'30"E and also latitude extended from 6°08'30"N to 6°11'0"N. The objective of this study was to update geological map of Kampung Pantai Dasar to the scale of 1:25,000. The abandoned dumpsite in the study area was selected to analyse the water quality (surface water and groundwater) and identify its potential health hazard impact. Field mapping and soil analysis such as moisture content, specific gravity and particle-size distribution were conducted to study the general geology of the study area. Physical parameters of water samples were carried out in-situ to determine the temperature, pH, TDS, EC and DO using YSI 556 MPS and YSI Model 85. The chemical parameters such as Cr, Fe, Ni, Zn. Cu, Cd, Sr, Mn, Co, Pb, Se, As, Ba and Al were determined using ICP-OES. Milestone Direct Mercury Analyzer DMA 80 was used to analysis the concentration of Hg whereas identification of NO₃⁻ was conducted with Varian Cary 50 UV-Visible Spectrophotometer. Total hardness of the water samples was calculated by the formula of (2.50 x Ca concentration) + (4.12 x Mg concentration). In the part of general geology, the study area was deposited by alluvium and the soil was classified into sand, loamy sand as well as sandy clay. In the part of water quality analysis, the surface water was classified as Class 1. There were 80 % of groundwater was detected with NO₃⁻ concentrations far exceeded the drinking water standard (MOH). This caused by both abandoned dumpsite and human activity. The potential health hazard impact was Blue Baby Syndrome. The interaction of N₃⁻- with organic compounds would also form N-nitrosamines that cause cancer