Prior to signing an agreement for over $40,00 to replace outbuilding roof and home roof, we specified the importance of no leaking oil, gas, equipment or vehicles on any black-top. This was covered in person to sales rep, and project manager. It was conveyed to me that I would be notified every step of the way and of any issues. Gas was stored and then spilled on blacktop. blacktop, oil was dripped from machinery User's recommendation: Not again. They did not let me know of spill, refused to apply gas absorbent.