All products used exceed the EPA regulations and standards, ECS can clean most any surface and leave it free of hydrocarbons, oil, gas etc. If you have a gas spill or oil spill or any other type we can clean the surface restore it back to a undetectable reading. The products actually eat the hydrocarbons! Keeping the earth healthy! Our company is geared to the satisfaction of our customers and preserving mother nature. We use the top of the line power washing equipment. Remember in this fire season debris build-up on roof tops can pose a danger, we can wash it away leaving your home or business looking refreshed again!