[Code of Federal Regulations]
[Title 40, Volume 24]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR264.175]

[Page 312-313]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 264_STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, 
STORAGE, AND DISPOSAL FACILITIES--Table of Contents
 
               Subpart I_Use and Management of Containers
 
Sec. 264.175  Containment.

    (a) Container storage areas must have a containment system that is 
designed and operated in accordance with paragraph (b) of this section, 
except as otherwise provided by paragraph (c) of this section.
    (b) A containment system must be designed and operated as follows:
    (1) A base must underly the containers which is free of cracks or 
gaps and is sufficiently impervious to contain leaks, spills, and 
accumulated precipitation until the collected material is detected and 
removed;
    (2) The base must be sloped or the containment system must be 
otherwise designed and operated to drain and remove liquids resulting 
from leaks, spills, or precipitation, unless the containers are elevated 
or are otherwise

[[Page 313]]

protected from contact with accumulated liquids;
    (3) The containment system must have sufficient capacity to contain 
10% of the volume of containers or the volume of the largest container, 
whichever is greater. Containers that do not contain free liquids need 
not be considered in this determination;
    (4) Run-on into the containment system must be prevented unless the 
collection system has sufficient excess capacity in addition to that 
required in paragraph (b)(3) of this section to contain any run-on which 
might enter the system; and
    (5) Spilled or leaked waste and accumulated precipitation must be 
removed from the sump or collection area in as timely a manner as is 
necessary to prevent overflow of the collection system.

[Comment: If the collected material is a hazardous waste under part 261 
of this Chapter, it must be managed as a hazardous waste in accordance 
with all applicable requirements of parts 262 through 266 of this 
chapter. If the collected material is discharged through a point source 
to waters of the United States, it is subject to the requirements of 
section 402 of the Clean Water Act, as amended.]

    (c) Storage areas that store containers holding only wastes that do 
not contain free liquids need not have a containment system defined by 
paragraph (b) of this section, except as provided by paragraph (d) of 
this section or provided that:
    (1) The storage area is sloped or is otherwise designed and operated 
to drain and remove liquid resulting from precipitation, or
    (2) The containers are elevated or are otherwise protected from 
contact with accumulated liquid.
    (d) Storage areas that store containers holding the wastes listed 
below that do not contain free liquids must have a containment system 
defined by paragraph (b) of this section:
    (1) FO20, FO21, FO22, FO23, FO26, and FO27.
    (2) [Reserved]

[46 FR 55112, Nov. 6, 1981, as amended at 50 FR 2003, Jan. 14, 1985]