2025 09 08 Work Session Packet

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ORDINANCE NO. XXXX 
Page 1 of 1 
 
AN ORDINANCE TO AMEND TITLE 14, CHAPTER V, SECTION 14 -130 OF THE 
ATHENS CITY CODE RELATIVE TO PERMANENT STORMWATER 
MANAGEMENT: DESIGN AND CONSTRUCTION INSPECTION. 
 
WHEREAS, the City of Athens is required to comply with the Tennessee Department of 
Environment and Conservation (TDEC) National Pollutant Discharge Elimination System 
(NPDES) Small Municipal Separate Storm Sewer System (MS4) General Permit; and 
 
WHEREAS, TDEC has clarified its requirements concerning manufactured treatment 
devices (MTDs) and total suspended solids (TSS) removal standards, including recognition of 
certification programs and the prohibition of sequential “treatment-train” designs for 
hydrodynamic separator devices; and 
 
WHEREAS, it is necessary to amend the City Code to maintain compliance with state 
regulations and ensure the City’s stormwater management program reflects current standards; 
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE 
CITY OF ATHENS, TENNESSEE AS FOLLOWS: 
SECTION 1. 
That Title 14, Chapter V, Section 14-130(4) of the Athens City Code is hereby amended to read 
as follows: 
 
14-130 Permanent Stormwater Management: Design and Construction Inspection 
 
(4) Total suspended solids (TSS) removal rate shall be the City’s recognized metric for the 
reduction of pollutants in stormwater effluent. Design TSS removal rates for approved 
MTDs shall be established by a 3rd party certification program recognized by the City. 
The two certification programs currently recognized by the City include NJDEP and 
WSDOE; additionally, use of sequential MTDs, e.g. a treatment train of two or more 
HDS units, in an attempt to cumulatively meet the 80% TSS requirement are not 
recognized as achieving such and shall not be permissible in permanent SCM design(s). 
 
SECTION 2. 
That Title 14, Chapter V, Section 14-128 of the Athens City Code is hereby amended to include 
the following two definitions and renumber the items appropriately: 
 
14-128 Definitions 
 
 
SECTION 3. 
That this Ordinance shall take effect from and after its adoption, the public welfare requiring it. 
    
   
FIRST READING: September 16, 2025  
PUBLIC HEARING NOTICE:   
DATE OF PUBLIC HEARING:   
SECOND READING: October 21, 2025  
 
 
 
 
ATTEST:  LARRY EATON, Mayor 
   
   
RANDALL DOWLING, City Manager   
   
APPROVED AS TO FORM:   
   
   
CHRISTOPHER M. CALDWELL, City Attorney   
 
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