Received a call from Mass State Police for us to respond immediately to Rte 24S by exit #9 for a tt-unit that was over the guardrail down a 30 foot embankment. When we arrived on scene we had to remove the damaged guardrail with our loader and torches. Once the guardrail was removed we then set up our two rotators and our 7035 to lift the entire unit up and out of the woods. The incline was very steep so we needed to work all 3 wreckers at the same time to remove the loaded tt-unit. After the unit was removed from the woods our crew had to pump out the fuel tank that was leaking from the passenger side. We also worked in conjunction with Frank Corp. Environmental to dig up the contaminated soil with our excavator and loaded it into Frank Corps. dump truck. We then cleared all the debris from the scene with our roll-off truck and it was disposed of.