[Code of Federal Regulations]
[Title 40, Volume 21]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR257.3-8]

[Page 373-374]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
                   CHAPTER I--ENVIRONMENTAL PROTECTION
                           AGENCY (CONTINUED)
 
PART 257--CRITERIA FOR CLASSIFICATION OF SOLID WASTE DISPOSAL FACILITIES AND PRACTICES--Table of Contents
 
    Subpart A--Classification of Solid Waste Disposal Facilities and 
                                Practices
 
Sec. 257.3-8  Safety.

    (a) Explosive gases. The concentration of explosive gases generated 
by the facility or practice shall not exceed:
    (1) Twenty-five percent (25%) of the lower explosive limit for the 
gases in facility structures (excluding gas control or recovery system 
components); and
    (2) The lower explosive limit for the gases at the property 
boundary.
    (b) Fires. A facility or practice shall not pose a hazard to the 
safety of persons or property from fires. This may be accomplished 
through compliance with Sec. 257.3-7 and through the periodic 
application of cover material or other techniques as appropriate.
    (c) Bird hazards to aircraft. A facility or practice disposing of 
putrescible wastes that may attract birds and which occurs within 10,000 
feet (3,048 meters) of any airport runway used by turbojet aircraft or 
within 5,000 feet (1,524 meters) of any airport runway used by only 
piston-type aircraft shall not pose a bird hazard to aircraft.
    (d) Access. A facility or practice shall not allow uncontrolled 
public access so as to expose the public to potential health and safety 
hazards at the disposal site.
    (e) As used in this section:

[[Page 374]]

    (1) Airport means public-use airport open to the public without 
prior permission and without restrictions within the physical capacities 
of available facilities.
    (2) Bird hazard means an increase in the likelihood of bird/aircraft 
collisions that may cause damage to the aircraft or injury to its 
occupants.
    (3) Explosive gas means methane (CH4).
    (4) Facility structures means any buildings and sheds or utility or 
drainage lines on the facility.
    (5) Lower explosive limit means the lowest percent by volume of a 
mixture of explosive gases which will propagate a flame in air at 25 
[deg]C and atmospheric pressure.
    (6) Periodic application of cover material means the application and 
compaction of soil or other suitable material over disposed solid waste 
at the end of each operating day or at such frequencies and in such a 
manner as to reduce the risk of fire and to impede disease vectors' 
access to the waste.
    (7) Putrescible wastes means solid waste which contains organic 
matter capable of being decomposed by microorganisms and of such a 
character and proportion as to be capable of attracting or providing 
food for birds.