v>EPA
United States
Environmental Protection
Agency
Office of
Solid Waste and
Emergency Response
DIRECTIVE NUMBER: 9443.01(83)
TITLE: Definition of Ignitable Solids
APPROVAL DATE: i-io-83
EFFECTIVE DATE: 1-10-83
ORIGINATING OFFICE: Office of Solid Waste
0 FINAL
D DRAFT
STATUS:
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A- Pending OMB approval
B- Pending AA-OSWER approval
C- For review &/or comment
D- .In development or circulating
headquarters
REFERENCE (other documents):
OSWER OSWER OSWER
/£ DIRECTIVE DIRECTIVE Di
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PART 261 SUBPART C - CHARACTERISTICS DOC: 9443.01(83)
Key Words: Ignitable Waste
Regulations: 40 CFR 261.21
Subject: Definition of Ignitable Solids
Addressee: David A. Wagoner, Director, Air and Waste Management Division,
Region VII
Originator: John H. Skinner, Acting Director, Office of Solid Waste.
Source Doc: #9443.01(83)
Date: 1-10-83
Summary:
In order for a solid waste to be considered "ignitable," two specifications
must be met. Such a waste must be capable under standard temperature and
pressure of:
1. Causing fires through friction, absorption of moisture or spontaneous
chemical changes; and
2. Burning so vigorously and persistently that it creates a hazard.
As an example, titanium swarf which is difficult to ignite, would not be
classified as a hazardous waste even though once ignited, it may pose a hazard.
To remove ambiguities in the definition, OSW is in the process of developing
specific testing methods and hazardous waste thresholds for ignitable solids.
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JAN I 0 1983
RE: WCbDf034b
MEMORANDUM
SUBJECT: lynitable Solids Definition
PROM: John H. Skinner, Acting Director
Office of Solid Waste (WH-562)
TO: David A. Wagoner, Director
Air and Waste Management Division, Region VII
As you requested in your memo of December 15, I am writing
to clarify th« definition of an ignitable solid under 40 CFR
261.21 as it applies to materials such as titanium swarf.
As Gene Grumpier correctly advised Greg Weber- of Region V,
in order for a solid waste to be an ignitable waste it must
be capable, under standard temperature and pressure, of both
causing fires through friction, absorption of moisture or
spontaneous chemical changes and burn so vigorously and per-
sistently that it creates a hazard. Thus, if the titanium
swarf is very difficult to ignite it would not be classified
as a hazardous waste even thouyh, once ignited, it raay pose a
hazard.
In order to remove the ambiguities inherent in such a
definition, OSW is in the process of developing specific testing
methods and hazardous waste definition thresholds for ignitable
solids. However, s\ich tests are not expected to b« ready tor
proposal until PY 84. \
If you have any comments or questions concerning the
ignitabla waste definition please give David Friedman or
Florence Richardson a call at PTS 382-4770.
WH-565B:DFRIEDMAN:df:S248:382-4770:WSM:1-5-83 Disk DF:03:45
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