in detail in fig2 4 are used with the soil decontamination and remediation system of the present invention the combustion chambers 56 of each unit are attached directly into the side of the second stage of the soil remediation system specifically the horizontal trammel unit 10 turning now to fig5 the horizontal trammel unit 10 is shown in vertical section the trammel includes the internal rotating drum 12 that rotates on trunnions 70 on the left and 72 on the right the rotating drum 12 rotates concentrically about its longitudinal axis within a longitudinal insulated shell 74 into which the combustion chambers 56 from the heat energy units 14 direct their respective blasts of ignited volatile gas and air mixtures the rotating drum 12 is essentially a closed drum open only at one end the right end as shown in fig5 for the introduction of contaminated soil thereinto and the withdrawal of hydrocarbon vapors therefrom in addition the drum includes two openings adjacent the opposite end the left end as shown in fig5 which permit the decontaminated and remediated soil to drop out therefrom as the drum rotates in operation two respective combustion chambers 56 are attached directly to the insulated shell 74 of the trammel unit as indicated in fig1 specifically each combustion chamber 56 attaches to the shell 74 at a respective inlet 76 for injecting heat from the pair of high heat energy units 14 directly into the annular space within the insulated shell and around the rotating drum in order to indirectly heat the contaminated soil as the soil migrates through the drum soil is introduced into.