Martin Ambrose is an Asbestos Investigator. He collects samples to see if there is Asbestos. He prepares and files ACP 5 or 7 depending on the job. Martin is fair, prompt, and has a lot of patience. Martin handled our repeated phone calls Me Owner and my builder.. When we called he came out with in two days. We need the job rushed due to the cold weather settling in. He was always polite and returned our phone calls. I had to wait like a day for an estimate. He had forgotten his pad... It was my fault I didn't realize he was coming to do the sampling and not give an estimate. I recommend Martin very much!! When the job cost more.. He didn't realize he need to take a few more sample of something else. Even though he had a clause in the contract to charge me more he did not. I'm really glad I found such a stand up guy! his credentials were current as of this posting. He is listed on NYC's Certified Asbestos Investigator.