S.C. Code Regs. § ch. 61, 61-79, 61-79.265, app 61-79.265.V
Many hazardous wastes, when mixed with other waste or materials at a hazardous waste facility, can produce effects which are harmful to human health and the environment, such as (1) heat or pressure, (2) fire or explosion, (3) violent reaction, (4) toxic dusts, mists, fumes, or gases, or (5) flammable fumes or gases.
Below are examples of potentially incompatible wastes, waste components, and materials, along with the harmful consequences which result from mixing materials in one group with materials in another group. The list is intended as a guide to owners or operators of treatment, storage, and disposal facilities, and to enforcement and permit granting officials, to indicate the need for special precautions when managing these potentially incompatible waste materials or components.
This list is not intended to be exhaustive. An owner or operator must, as the regulations require, adequately analyze his wastes so that he can avoid creating uncontrolled substances or reactions of the type listed below, whether they are listed below or not.
It is possible for potentially incompatible wastes to be mixed in a way that precludes a reaction (e.g., adding acid to water rather than water to acid) or that neutralizes them (e.g., a strong acid mixed with a strong base), or that controls substances produced (e.g., by generating flammable gases in a closed tank equipped so that ignition cannot occur, and burning the gases in an incinerator).
In the lists below, the mixing of a Group A material with a Group B material may have the potential consequence as noted.
Group 1-A | Group 1-B |
Acetylene sludge | Acid sludge |
Alkaline caustic liquids | Acid and water |
Alkaline cleaner | Battery acid |
Alkaline corrosive liquids | Chemical cleaners |
Alkaline corrosive battery fluid | Electrolyte, acid |
Caustic wastewater | Etching acid liquid or |
solvent | |
Lime sludge and other corrosive | Pickling liquor and other |
alkalies | corrosive acids |
Lime wastewater | Spent acid |
Lime and water | Spent mixed acid |
Spent caustic | Spent sulfuric acid |
Potential consequences: Heat generation; violent reaction.
Group 2-A | Group 2-B |
Aluminum | Any waste in Group |
Beryllium | 1-A or 1-B |
Calcium | |
Lithium | |
Magnesium | |
Potassium | |
Sodium | |
Zinc powder | |
Other reactive metals and metal | |
hydrides |
Potential consequences: Fire or explosion; generation of flammable hydrogen gas.
Group 3-A | Group 3-B |
Alcohols | Any concentrated waste in |
Water | Groups 1-A or 1-B |
Calcium | |
Lithium | |
Metal hydrides | |
Potassium | |
SO2 Cl2 SOCl2 PCl3 | |
CH3SiCl3 | |
Other water-reactive | |
waste |
Potential consequences: Fire, explosion, or heat generation; generation of flammable or toxic gases.
S.C. Code Regs. ch. 61, 61-79, 61-79.265, app 61-79.265.V