Usually if we are removing an oil tank by hand excavation it is due to lack of access.  In the past most oil tanks were removed by the hand excavation method.  We are equipment with a custom made tripod that we introduced into the industry over a decade ago.  However, with the introduction of our rubber tracked mini Kubota, we find that we can access most places and extract the oil tank fast, and efficiently with very little impact ( if any) to the surrounding environment.