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Clayton E. Cullison, Jr.Licensed

Licensed septic contractor based in Callaway, St. Mary's County, MD

License details

Company	Cullison Excavating, LLC
License number	01569
License type	Registered On-Site Wastewater (Septic) Professional
License status	Current, MD State Board of On-Site Wastewater Professionals
License expires	June 30, 2028
Based in	Callaway, St. Mary's County, Maryland 20620

"Based in" is the city and county of the address on the business's license record.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #01569 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: MD State Board of On-Site Wastewater Professionals - registered individuals, last checked 2026-08-17. Look it up at the issuing agency.

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