[Code of Federal Regulations]
[Title 40, Volume 22]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR180.1025]

[Page 555]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 180_TOLERANCES AND EXEMPTIONS FROM TOLERANCES FOR PESTICIDE CHEMICALS 
IN FOOD--Table of Contents
 
                  Subpart D_Exemptions From Tolerances
 
Sec. 180.1025  Xylene; exemption from the requirement of a tolerance.

    Xylene is exempted from the requirement of a tolerance when used as 
an aquatic herbicide applied to irrigation conveyance systems in 
accordance with the following conditions:
    (a) It is to be used only in programs of the Bureau of Reclamation, 
U.S. Department of Interior, and cooperating water user organizations.
    (b) It is to be applied as an emulsion at an initial concentration 
not to exceed 750 parts per million.
    (c) It is not to be applied when there is any likelihood that the 
irrigation water will be used as a source of raw water for a potable 
water system or where return flows of such treated irrigation water into 
receiving rivers and streams would contain residues of xylene in excess 
of 10 parts per million.
    (d) Xylene to be used as an aquatic herbicide shall meet the 
requirement limiting the presence of a polynuclear aromatic hydrocarbons 
as listed in 21 CFR 172.250.

[38 FR 16352, June 22, 1973, as amended at 50 FR 2980, Jan. 3, 1985]