[Code of Federal Regulations]
[Title 40, Volume 18]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR130.33]

[Page 366]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 130--WATER QUALITY PLANNING AND MANAGEMENT--Table of Contents
 
   Subpart C--Identifying Impaired Waterbodies And Establishing Total 
                       Maximum Daily Loads (TMDLs)
 
Sec. 130.33  How are TMDLs expressed?

    (a) A TMDL must contain a quantitative expression of the pollutant 
load or load reduction necessary to ensure that the waterbody will 
attain and maintain water quality standards, or, as appropriate, the 
pollutant load or load reduction required to attain and maintain aquatic 
or riparian habitat, biological, channel or geomorphological or other 
conditions that will result in attainment and maintenance of water 
quality standards.
    (b) As appropriate to the characteristics of the waterbody and 
pollutant, the pollutant load or load reduction may be expressed in one 
or more of the following ways:
    (1) The pollutant load that can be present in the waterbody and 
ensure that it attains and maintains water quality standards;
    (2) The reduction from current pollutant loads required to attain 
and maintain water quality standards;
    (3) The pollutant load or reduction of pollutant load required to 
attain and maintain aquatic, riparian, biological, channel or 
geomorphological measures so that water quality standards are attained 
and maintained;
    (4) A quantitative expression of a modification of a characteristic 
of the waterbody, e.g., aquatic and riparian habitat, biological, 
channel, geomorphological, or chemical characteristics, that results in 
a pollutant load or reduction of pollutant load so that water quality 
standards are attained and maintained; or
    (5) In terms of either mass per time, toxicity or other appropriate 
measure.