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From the State of Tennessee Executive Order 83
"18. Temporary quarantine and isolation facilities may be constructed
I. The provisions of Tennessee Code Annotated, Section 68-11-202( c )( 1 )-(8), are hereby suspended to allow for the construction of temporary structures, the plans for which would otherwise be subject to review for new construction, additions, or substantial alterations, as directed by the Commissioner of Health and the Director of TEMA in response to COVID-19; provided, that there shall be inspections of such structures to ensure safety, as necessary."
First they came for the "high risk" people...