Any presence of anthropogenically generated compounds in the soil could be regarded as "Pollution" (ie it is "contaminated" with material that would otherwise not be there naturally). If you are more concerned with knowing the level of contamination that can be a problem (for human health, natural resources or ecologically), then see also the discussion at https://www.researchgate.net/post/Are_there_any_limits_for_treating_oily_contaminated_soil_Eg_should_treatment_reduce_hydrocarbons_to_5_4_etc_or_just_depends_on_resultant_risk

Dear Osakpolor!

It depends on the guidelines limits of contaminated soil in the country and the region you are living in. Any concentration over these limits could be regarded as hazard.

Regards

Yahya

It is important for the questioner to appraise themselves with the terms contaminant and pollution"" as these are not synonymous terms. As such, they should not be used interchangeably.""" Anything found where it should not be, can be defined as a contaminant in that matrix composition. If the amount of contaminant surpasses some levelagreed of standard, say where it could be injuriuos to health, the environmento an ecosystem, etc, then the pollutant has caused pollutioncontaminant t . Thus if the amount remains below the set standard, then it remains a contaminant.