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The Cumulative Hazard Index method has been proposed for the first time to determine the low and high-risk levels of radionuclides. The significant radiological parameters and risk analyses for ²²⁶Ra, ²³²Th and ⁴⁰K pollution levels control in the soil are determined through the probability distribution functions. The activity concentration of ²²⁶Ra, ²³²Th and ⁴⁰K in samples were found to vary from of 16 ± 0.6 to 62 ± 3.2 Bq kg⁻¹ with an average 30 ± 1.1 Bq kg⁻¹, 24 ± 0.9 to 63 ± 1.3 Bq kg⁻¹ with an average 37 ± 1.0 Bq kg⁻¹ and 316 ± 5.8 to 878 ± 6.9 Bq kg⁻¹ with an average 525 ± 6.2 Bq kg⁻¹, respectively.