[Code of Federal Regulations]
[Title 40, Volume 26]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR420.21]

[Page 399]
 
                TITLE 40-PROTECTION OF ENVIRONMENT
 
      CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 420-IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY--Table of Contents
 
                 Subpart B-Sintering Subcategory
 
Sec. 420.21  Specialized definitions.

    As used in this subpart:
    (a) For the sintering subcategory, the term product means sinter 
agglomerated from iron-bearing materials.
    (b) The term dry air pollution control system means an emission 
control system that utilizes filters to remove iron-bearing particles 
(fines) from blast furnace or sintering off-gases.
    (c) The term minimum level (ML) means the level at which the 
analytical system gives recognizable signals and an acceptable 
calibration point. For 2,3,7,8-tetrachlorodibenzofuran, the minimum 
level is 10 pg/L per EPA Method 1613B for water and wastewater samples.
    (d) The term pg/L means picograms per liter (ppt = 1.0x10-12 gm/L).
    (e) The term sintering means a process for agglomerating iron-
bearing materials into small pellets (sinter) that can be charged to a 
blast furnace.
    (f) The term wet air pollution control system means an emission 
control system that utilizes water to clean process or furnace off-
gases.

[67 FR 64264, Oct. 17, 2002]