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Tommy Koloski ExcavationLicensed

Name: Tommy Koloski Excavation
Address: Marshall, NC

Licensed septic contractor based in Marshall, Madison County, NC

License number	6662
License type	Certified Onsite Wastewater System Contractor - Grade II
License status	Current, on the NCOWCICB certified list effective 2026-09-16
License issued	March 2, 2020
Based in	Marshall, Madison County, North Carolina

"Based in" is the city and county of the address on the business's license record. That can be a mailing address; it doesn't tell you where the business works.

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What this license covers

Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.

How to verify this license

We publish the license details exactly as they appear in the official licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #6662 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: NCOWCICB - certified onsite wastewater contractor and inspector list, last checked 2026-09-23. Verify at the official source.

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