Paragraph 20 Additional criteria for acceptance of waste at landfills for hazardous wasteF1
The following criteria apply to granular waste to be accepted at a landfill for hazardous waste—
the leaching limit values set out in Table 1,
the additional criteria set out in Table 2, and
the waste must have a load bearing capacity of at least 50kPa.
Subject to sub-paragraph (3), the following criteria applies to monolithic hazardous waste to be accepted at a landfill—
the limit values set out in Table 3,
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 meets the following limit values—
loss of ignition of 10%, or
total organic carbon of 6%.
Table 1
| Component | Symbol | L/S = 10 1/kgf1 |
|---|---|---|
(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 1,000 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 | 25 |
| Barium | Ba | 300 |
| Cadmium | Cd | 5 |
| Total chromium | Cr total | 70 |
| Copper | Cu | 100 |
| Mercury | Hg | 2 |
| Molybdenum | Mo | 30 |
| Nickel | Ni | 40 |
| Lead | Pb | 50 |
| Antimony | Sb | 5 |
| Selenium | Se | 7 |
| Zinc | Zn | 200 |
| Chloride | Cl- | 25 000 |
| Fluoride | F- | 500 |
| Sulphate | SO42- | 50 000 |
| Phenol index | Pl | 1 |
| Dissolved Organic Carbonf2 | DOC | 1000 |
| Total dissolved solidsf3 | TDS | 100 000 |
Table 2
| Parameter | Values |
|---|---|
(1) Either Loss on Ignition (LOI) or Total Organic Carbon (TOC) must be used. | |
(2) If this value for TOC is not achieved, a higher limit value may be permitted by SEPA provided that the Dissolved Organic Carbon (DOC) value of 1,000 mg/kg is achieved at L/S = 10 l/kg at its own pH or a pH value of between 7.5 and 8.0. | |
| Loss on Ignition (LOI)f4 | 10% |
| Total organic carbon (TOC)f5 | 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 3
| Component | Symbol | Mg/m2f6 |
|---|---|---|
(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 | 20 |
| Barium | Ba | 150 |
| Cadmium | Cd | 1 |
| Total chromium | Cr total | 25 |
| Copper | Cu | 60 |
| Mercury | Hg | 0.4 |
| Molybdenum | Mo | 20 |
| Nickel | Ni | 15 |
| Lead | Pb | 20 |
| Antimony | Sb | 2.5 |
| Selenium | Se | 5 |
| Zinc | Zn | 100 |
| Chloride | Cl- | 20 000 |
| Fluoride | F- | 200 |
| Sulphate | SO42- | 20 000 |
| Dissolved Organic Carbon | DOC | 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 1,000 mg/kg.
- f3
(3)
The values for TDS (Total Dissolved Solids) can be used alternatively to the values for Sulphate and Chloride.
- f4
(1)
Either Loss on Ignition (LOI) or Total Organic Carbon (TOC) must be used.
- f5
(2)
If this value for TOC is not achieved, a higher limit value may be permitted by SEPA provided that the Dissolved Organic Carbon (DOC) value of 1,000 mg/kg is achieved at L/S = 10 l/kg at its own pH or a pH value of between 7.5 and 8.0.
- f6
(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.