---
title: "Spectrum Geological Services, PC (dba Preferred Environmental Services, P.C), North Merrick, NY | Mold Roster"
description: "Spectrum Geological Services, PC (dba Preferred Environmental Services, P.C): mold assessment in North Merrick, NY. NYS DOL licence details, contact and free quotes."
canonical: https://moldroster.com/ny/firms/spectrum-geological-services-pc-dba-preferred-environmental-ny1261/
---

# Spectrum Geological Services, PC (dba Preferred Environmental Services, P.C)

* Mold assessment
* Licensed by NYS DOL (New York State Department of Labor)
* North Merrick, NY (Nassau County)
* Address: 323 Merrick Ave, North Merrick, NY
* Phone: (516) 546-1100
* Website: http://www.preferredenv.com/
* Google rating: 5.0 from 3 reviews (as of Oct 30, 2026)
* Mold Assessment Contractor License (SH125) #26-63p3n-shmo (exp. 2028-10-31)

Added by us, not on the state list: website and rating from the firm's [Google Maps listing](https://maps.google.com/?cid=16440927659693549361&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA), retrieved 2026-10-30.

Source: https://data.ny.gov/Government-Finance/Mold-Contractor-Licenses-Four-Year-Window/ikqx-ispy, retrieved 2026-10-12. Verify: https://dol.ny.gov/mold-program. Claim / correct: https://moldroster.com/claim-listing/?id=NY1261