I brought in the Healthy Abode to test for Asbestos in my home and produce a DSS. What set them apart from everyone else I had quote was the level of detail in describing the process to me. The owner, Angelina, walked me through the process when I called for a quote, much unlike the other firms who seemed to just want me off the phone.
When the two technicians came they walked my through the where the sampled, where asbestos and other substances typically are found and gave me great advice on abatement (they don't offer this service unfortunately).
Since the DSS was produced and my remodel has started I uncovered a couple potential sources of asbestos that were not visible during their initial visit. Angelia offered to send her team to come and collect the samples without charging for a site visit.
She has also been very detailed in answering questions even since the DSS was produced.
I strongly recommend this company.
Update:
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Despite the last time I bought their services was a couple months ago, the owner, Angelina, still makes time to answer questions and provide advice as "suspicious" materials are uncovered during demo. Thanks to her, I have a lot more peace of mind while undertaking my project.