The lexicon of the top500 ( The Encyclopedia for Classification Codes ) explains the codes and definitions in the world of economical classifications.
NAICS Code 5629 Remediation and Other Waste Management Services
The NAICS Code 5629 is described as
Remediation and Other Waste Management Services Description
This industry group comprises establishments primarily engaged in remediation and other waste management services (except waste collection, waste treatment and disposal, and waste management consulting services).
(2019-08-02)
It belongs to the code group
NAICS Code 562 Waste Management and Remediation Services