Paragraph 22 Criteria for granular stable non-reactive hazardous waste deposited in a cell on its own and granular stable non-reactive hazardous waste and non-hazardous waste deposited in the same cellF1
The following criteria apply to granular, stable, non-reactive hazardous waste and to granular non-hazardous waste which is landfilled in the same cell with such waste—
the limit values set out in Table 4,
the additional criteria set out in Table 5, and
the waste must have the load bearing capacity of at least 50kPa.
Subject to sub-paragraph (3), the following criteria apply to monolithic stable, non-reactive hazardous waste and to monolithic non-hazardous waste which is landfilled in the same cell with such waste—
the limit values set out in Table 6,
the additional criteria set out in Table 7,
the waste must have a load bearing capacity of at least 1.5MPa, and
the monolith must be at least 40 cm in any direction or have a fracture spacing of at least 40 cm.
Where waste is subject to treatment to render it monolithic, the waste must only be accepted at a landfill if, prior to such treatment, the waste met the following limit values—
loss of ignition of 10%, or
total organic carbon of 6%.
Table 4
| Component | Symbol | L/S = 10 1/kg>f1 |
|---|---|---|
(1) SEPA may include conditions in a permit authorising limit values for specific parameters (other than dissolved organic carbon) up to three times higher for specified waste accepted in a landfill taking into account the characteristics of the landfill and its surroundings and provided a risk assessment demonstrates that emissions (including leachate) from the landfill will present no additional risk to the environment. | ||
(2) If the waste does not meet this value for Dissolved Organic Carbon (DOC) at its own pH, it may alternatively be tested at L/S = 10 l/kg and a pH of between 7.5 and 8.0. The waste may be considered as complying with the acceptance criteria for DOC if the result of this determination does not exceed 800 mg/kg. | ||
(3) The values for TDS (Total Dissolved Solids) can be used alternatively to the values for Sulphate and Chloride. | ||
| mg/kg dry substance | ||
| Arsenic | As | 2 |
| Barium | Ba | 100 |
| Cadmium | Cd | 1 |
| Total Chromium | Cr total | 10 |
| Copper | Cu | 50 |
| Mercury | Hg | 0.2 |
| Molybdenum | Mo | 10 |
| Nickel | Ni | 10 |
| Lead | Pb | 10 |
| Antimony | Sb | 0.7 |
| Selenium | Se | 0.7 |
| Zinc | Zn | 50 |
| Chloride | Cl- | 15 000 |
| Fluoride | F- | 150 |
| Sulphate | SO42- | 20 000 |
| Dissolved organic Carbonf2 | DOC | 800 |
| Total dissolved solidsf3 | TDS | 60 000 |
Table 5
| Parameter | Value |
|---|---|
(1) If this value is not achieved, a higher limit value may be permitted by SEPA, provided that the Dissolved Organic Carbon (DOC) value of 800 mg/kg is achieved at L/S = 10 l/kg, either at the material’s own pH or at a pH value between 7.5 and 8.0. | |
| Total organic carbon (TOC)f4 | 5% |
| pH | Minimum 6 |
| Acid neutralisation capacity (ANC) | Must be evaluated between the pH of the waste in question, pH6 and the pH of the site leachate. |
Table 6
| Component | Symbol | Mg/m2f5 |
|---|---|---|
(1) These limit values apply to tests using the 64-day tank test (NEN 7345) necessary for characterisation of the waste. Where it is appropriate for compliance testing, SEPA may specify use of a shortened version of the test comprising only the first four steps, and in such cases, the limit values will be a quarter of the values in the table. | ||
| Arsenic | As | 1.3 |
| Barium | Ba | 45 |
| Cadmium | Cd | 0.2 |
| Total Chromium | Cr total | 5 |
| Copper | Cu | 45 |
| Mercury | Hg | 0.1 |
| Molybdenum | Mo | 7 |
| Nickel | Ni | 6 |
| Lead | Pb | 6 |
| Antimony | Sb | 0.3 |
| Selenium | Se | 0.4 |
| Zinc | Zn | 30 |
| Chloride | Cl- | 10 000 |
| Fluoride | F- | 60 |
| Sulphate | SO42- | 10 000 |
| Dissolved Organic Carbon | DOC | Must be evaluated |
Table 7
| Parameter | Value |
|---|---|
| pH | Must be evaluated |
| Electrical conductivity (mScm-1m-2) | Must be evaluated |
| Acid Neutralisation Capacity (ANC) | Must be evaluated |
Annotations
Textual amendments
- F1
Sch. 13 inserted (1.11.2025) by The Environmental Authorisations (Scotland) Amendment Regulations 2025 (S.S.I. 2025/165), reg. 1(2), sch. 4 (with sch. 23)
Footnotes
- f1
(1)
SEPA may include conditions in a permit authorising limit values for specific parameters (other than dissolved organic carbon) up to three times higher for specified waste accepted in a landfill taking into account the characteristics of the landfill and its surroundings and provided a risk assessment demonstrates that emissions (including leachate) from the landfill will present no additional risk to the environment.
- f2
(2)
If the waste does not meet this value for Dissolved Organic Carbon (DOC) at its own pH, it may alternatively be tested at L/S = 10 l/kg and a pH of between 7.5 and 8.0. The waste may be considered as complying with the acceptance criteria for DOC if the result of this determination does not exceed 800 mg/kg.
- f3
(3)
The values for TDS (Total Dissolved Solids) can be used alternatively to the values for Sulphate and Chloride.
- f4
(1)
If this value is not achieved, a higher limit value may be permitted by SEPA, provided that the Dissolved Organic Carbon (DOC) value of 800 mg/kg is achieved at L/S = 10 l/kg, either at the material’s own pH or at a pH value between 7.5 and 8.0.
- f5
(1)
These limit values apply to tests using the 64-day tank test (NEN 7345) necessary for characterisation of the waste. Where it is appropriate for compliance testing, SEPA may specify use of a shortened version of the test comprising only the first four steps, and in such cases, the limit values will be a quarter of the values in the table.