NOTE 5 PERMIT AND OTHER INTANGIBLE ASSETS

The following table summarizes changes in the carrying value of permits, which exist only in our Treatment Segment.

SCHEDULE OF INTANGIBLE ASSETS 

The following table summarizes information relating to the Company’s definite-lived intangible assets:

SCHEDULE OF DEFINITE LIVED INTANGIBLE ASSETS 

The intangible assets noted above were amortized on a straight-line basis over their useful lives with the exception of customer relationships which were amortized using an accelerated method.

The following table summarizes the expected amortization over the next five years for our definite-lived intangible assets:

SCHEDULE OF FINITE LIVED INTANGIBLE ASSETS, FUTURE AMORTIZATION EXPENSE 

Amortization expense recorded for definite-lived intangible assets was approximately $237,000 and $211,000, for the years ended December 31, 2022 and 2021, respectively.