EPA 40 CFR 264.175

[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]