Removal of short/long alkanes and BTE X investigated was different, from 97% (for hexane degraded by the mixture of the isolates) to 22% (for tridecane degraded by Alcaligenes piechaudii SRS).Hexadecane, pristane and cyclohexane were degraded with high efficiency between 72-91%. Among BTE X, toluene was degraded very well by both strains and their mixture. Benzene and m+p-xylenes were efficiently degraded by the mixture of the isolates, 78% and 87%, respectively.