Delhi Pollution Control Committee
Government of NCT of Delhi
CPCB Standards
Chemical Standards
Schedule - 2
[See rule 3(14)(b)]
List of Wastes Constituents with Concentration Limits Class A
Concentration limit: = 50 mg/kg
| A1 | Antimony and antimony compounds |
| A2 | Arsenic and arsenic compounds |
| A3 | Beryllium and beryllium compounds |
| A4 | Cadmium and cadmium compounds |
| A5 | Chromium (VI) compounds |
| A6 | Mercury and mercury compounds |
| A7 | Selenium and selenium compounds |
| A8 | Tellurium and tellurium compounds |
| A9 | Thallium and thallium compounds |
| A10 | Inorganic cyanide compounds |
| A11 | Metal carbonyls |
| A12 | Napthalene |
| A13 | Anthracene |
| A14 | Phenanthrene |
| A15 | Chrysene, benzo (a) anthracene, fluoranthene, benzo (a) pyrene, benzo (K) fluoranthene, indeno (1, 2, 3-cd) pyrene and benzo (ghi) perylene |
| A16 | halogenated compounds of aromatic rings, e.g. polychlorinated biphenyls, polychloroterphenyls and their derivatives |
| A17 | Halogenated aromatic compounds |
| A18 | Benzene |
| A19 | Organo-chlorine pesticides |
| A20 | Organo-tin Compounds |
Waste constituents and their concentration limits given in this list are based on BAGA (the Netherlands Environment Protection Agency) List of Hazardous Substances. In order to decide whether a specific material listed above is hazardous or not, following points be taken into consideration:
- If a component of the waste appears in one of the five risk classes listed above (A,B,C,D or E) and the concentration of the component is equal to or more than the limit for the relevant risks class, the material is then classified as hazardous waste.
- If a chemical compound containing a hazardous constituent is present in the waste, the concentration limit does not apply to the compound, but only to the hazardous constituent itself.
- If multiple hazardous constituents from the same class are present in the waste, the concentrations are added together.
- If multiple hazardous constituents from different classes are present in the waste, the lowest concentration limit corresponding to the constituent(s) applies.
- For substances in water solution, the concentration limit for dry matter must be used. If the dry matter content is less than 0.1% by weight, the concentration limit, reduced by a factor of one thousand, applies to the solution.
Class B
Concentration limit: = 5, 000 mg/kg
| B1 | Chromium (III) compounds |
| B2 | Cobalt compounds |
| B3 | Copper compounds |
| B4 | Lead and lead compounds |
| B5 | Molybdenum compounds |
| B6 | Nickel compounds |
| B7 | Inorganic Tin compounds |
| B8 | Vanadium compounds |
| B9 | Tungsten compounds |
| B10 | Silver compounds |
| B11 | Halogenated aliphatic compounds |
| B12 | Organo phosphorus compounds |
| B13 | Organic peroxides |
| B14 | Organic nitro-and nitroso-compounds |
| B15 | Organic azo-and azooxy compounds |
| B16 | Nitriles |
| B17 | Amines |
| B18 | (Iso-and thio-) cyanates |
| B19 | Phenol and phenolic compounds |
| B20 | Mercaptans |
| B21 | Asbestos |
| B22 | Halogen-silanes |
| B23 | Hydrazine (s) |
| B24 | Flourine |
| B25 | Chlorine |
| B26 | Bromine |
| B27 | White and red phosphorus |
| B28 | Ferro-silicate and alloys |
| B29 | Manganese-silicate |
| B30 | Halogen-containing compounds which produce acidic vapours on contact with humid air or water, e.g. silicon tetrachloride, aluminium chloride, titanium tetrachloride |
Class C
Concentration limit; = 20, 000 mg/kg
| C1 | Ammonia and ammonium compounds |
| C2 | Inorganic peroxides |
| C3 | Barium compounds except barium sulphate |
| C4 | Fluorine compounds |
| C5 | Phosphate compounds except phosphates of aluminium, calcium and iron |
| C6 | Bromates, (hypo-bromites) |
| C7 | Chlorates, (hypo-chlorites) |
| C8 | Aromatic compounds other than those listed under A12 to A18 |
| C9 | Organic silicone compounds |
| C10 | Organic sulphur compounds |
| C11 | Iodates |
| C12 | Nitrates, nitrites |
| C13 | Sulphides |
| C14 | Zinc compounds |
| C15 | Salts of per-acids |
| C13 | Acid amides |
| C14 | Acid anhydrides |
Class D
Concentration limit: = 50, 000 mg/kg
| D1 | Total Sulphur |
| D2 | Inorganic acids |
| D3 | Metal hydrogen sulphates |
| D4 | Oxides and hydroxides except those of hydrogen, carbon, silicon, iron, aluminum, titanium, manganese, magnesium, calcium |
| D5 | Total hydrocarbons other than those listed under A12 to A18 |
| D6 | Organic oxygen compounds |
| D7 | Organic nitrogen compounds expressed as nitrogen |
| D8 | Nitrides |
| D9 | Hydrides |
Class E
Regardless of concentration limit; Classified as hazardous wastes at all concentrations
| E1 | Flammable substances |
| E2 | Substances which generate hazardous quantities of flammable gases on contact with water or damp air |
