Risk Model on Target Receptors

Soil hydrocarbon pollution migrates due to deep percolation and sorption and affects public health via ingestion (soil and vegetation), inhalation, or dermal contact. The RISC 5 models predict the human or environmental toxicological effects that drive the release of a contaminant and its migration toward exposed receptors. Basically, this involves a measurable narrative of the relations in the systems of “source-pathway-receptor.” The estimated lifetime average daily dose (LADD), average annual risk (AR), cancer risks (CR), and hazard quotient risk (HQ) were evaluated for exposure-related risks in adults and children. The LADD, CR, AR, and HQ on carcinogenic and hazard risks are relatively higher in children than adults. The adult resident hazard risk ranges from 10⁻⁵ to 10⁻⁹ which indicates a safe value of too little to no risk, while the cancer risk 10⁻³–10⁻⁹ shows a potentially high risk of too little to no risk. The child resident hazard risk ranging from 10⁻³ to 10⁻⁶ denotes high hazard risk too little to no risk, while the cancer risk was 10⁻³–10⁻⁶ signifying potential high risk to exceed the critical value. The 25th and 75th percentiles were 10⁻⁵–10⁻⁶ and 10⁻³–10⁻⁵, respectively, while hazard index ranges from 10⁻² to 10⁻⁴. The model proves to be a good predictor for the calculation of migration from source, pathway, and receptor.