Site Map of Manual
Lab Safety Manual
1st Page
Chapter 1
Emergency
Response
Chapter 2
General
Safety
Chapter 3
Chemical
Hygiene Plan
Chapter 4
Radiological
Safety
Chapter 5
Biological
Hygiene Plan
Chapter 6
Laser
Safety
Chapter 7
Administrative
Concerns
Chapter 8
Standard
& Special Operating Procedures
Chapter 9
Facility
Data
Appendicies
Bibliography
Glossary
Index
On-Campus Contact Information
1st Rule of Lab Safety
Haz-Waste No-No
|
Updated February 2003
Chemical Hygiene Plan
Section 3.4 - Chemical Waste
E. Labeling
of Containers
Please see Appendix K for an example of a Hazardous Chemical Surplus Tag.
Each container shall bear the Hazardous Chemical Surplus Tag which
clearly and neatly indicates the chemical or common name of each substance which is at
least 1% by volume of the total contents or mixture. Carcinogens or highly toxic
substances which are 0.1% or more by volume must also be listed. Any amount of a heavy
metal (e.g. As, Ba, Cd, Cr, Hg, Ni, Se, Ag, Th) greater than 1 part per million (1 ppm) in
the container must be listed.
Indicate the strength or concentration of the substance where
applicable. Example: Hydrochloric Acid may have a strength of 10%, 28%, 38%.
Do not use chemical formulas, chemical symbols, chemical equations or
abbreviations.
Indicate the physical and/or health hazards of the substance, if known.
Indicate the name of the building, room, and principal investigator or
person responsible for generating the waste (or someone with direct knowledge of the
process).
In the instances of time sensitive substances such as ethers, the date
of container opening or initial accumulation shall be included on the form.
Remove or obliterate any other labels or wordings not related to the
current substance.
Do not allow the creation of "UNKNOWNS" through lack of secure
readable labeling.
F. Disposal of
Empty Containers
Containers that are empty and no longer needed must be
disposed of properly. Container disposal shall be as directed by 40 CFR 261.7
"Residues of hazardous waste in empty containers." Containers which have held acute hazardous materials as defined in 40 CFR 261.31, 261.32,
or 261.33 require special handling. To assist you in determining if an empty container is
regulated, here are some further guidelines.
A container shall be considered "empty" if all
the following conditions exist (for this section, a container shall be considered to be a
primary container or an inner liner):
- The container contained none of the chemicals that are listed in 40 CFR 261.33(e)
[attached] or Tri- Tetra- or Penta-phenol, and
- All chemicals have been removed that can be removed using practices commonly employed to
remove materials from that type of container eg pouring, pumping, aspirating, etc., and
- There is less than one inch of residue left in the bottom of the container, and
- There is less than 3% by weight of residue left in the container (0.3% for >110 gal.
containers), and
For compressed gas cylinders only, when
the pressure in the container approaches atmospheric.
If a container does contain chemicals listed below, or Tri-
Tetra- or Penta-phenol, the container shall be considered empty only if the container has
been triple rinsed using a solvent capable of removing the chemical or cleaned by another
method that has been shown in the scientific literature to achieve equivalent removal. The
rinsate then becomes a hazardous waste. If the container has not been cleaned as stated
above, the container shall become hazardous waste.
Once a container has been declared "empty" by the
above criteria, it can be placed in the normal refuse.
[Above adapted from 40 CFR 261.7] [Next: P-Waste List]
skip to (G. Storage of Waste
Chemicals)
|
P-Waste List
