# The Landfill (Amendment No.2) Regulations (Northern Ireland) 2007, Regulation 11: Amendment of Schedule 1 (Criteria and Procedures for the acceptance of waste at landfills)


For paragraph 17 of Schedule 1 (criteria for waste acceptable at landfills for hazardous waste) substitute—
“Criteria for waste acceptable at landfills for hazardous waste
17. Waste shall only be accepted at a landfill for hazardous waste if—
(a) in the case of granular waste–
(i) it meets the limit values for leaching set out in Table 6;
(ii) it meets the additional criteria set out in Table 7; and
(iii) it will have either–
(aa) if it is cohesive waste, a mean in situ shear strength of at least 50kPa; or
(bb) if it is non-cohesive waste, an in situ bearing ratio of at least 5%;
(b) in the case of monolithic waste–
(i) it meets either–
(aa) the limit values for leaching set out in Table 6; or
(bb) the limit values for leaching set out in Table 8;
(ii) it meets the additional criteria set out in Table 5B;
(iii) it has a mean unconfined compressive strength of at least 1MPa after 28 days curing;
(iv) it has either–
(aa) dimensions of greater than 40cm along each side; or
(bb) a depth and fracture spacing when hardened of greater than 40cm; and
(v) where the waste was subjected to treatment to render it monolithic, prior to such treatment it met the following limit values—
(aa) Loss on Ignition of 10%; or
(bb) Total Organic Carbon of 6%.
Table 6
Components
Symbol
L/S = 10 l/kg
mg/kg dry substance
(a)These values must be determined using EN 12457/1 to 3 (applied, in the case of monolithic waste, to a sample which has been crushed).
(b)The Chief Inspector may include conditions in a permit authorising limit values for specific parameters (other than Dissolved Organic Carbon (DOC)) up to three times higher for specified wastes 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.
(c)If the waste does not meet this value for 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 shall be considered as complying with the acceptance criterion for DOC, if the result of this determination does not exceed 1,000 mg/kg.
(d)The value for Total Dissolved Solids can be used alternatively to the values for Sulphate and Chloride.
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
Dissolved Organic Carbon
DOC
1,000
Total Dissolved Solids
TDS
100,000
Table 7
Parameter
Values
(a)Either Loss on Ignition or Total Organic Carbon must be used
(b)If this value for Total Organic Carbon is not achieved, a higher limit value may be permitted by the Chief Inspector, provided that the 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)
10 %
Total Organic Carbon (TOC)
6 %
Acid Neutralisation Capacity (ANC)
Must be evaluated
Table 8
Components
Symbol
mg/m2
(a)These values must be determined using EA NEN 7375:2004. Where it is appropriate for compliance testing, the Chief Inspector may specify use of a shortened version of the 64-day tank test provided for in EA NEN 7375:2004 comprising only the first four steps, and in such cases, the limit values shall be a quarter of the values in the table.
(b)The Chief Inspector may include conditions in a permit authorising limit values for specific parameters (other than DOC) up to three times higher for specified wastes 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.
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.
”

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Source: https://www.legislation.gov.uk/nisr/2007/258/regulation/11 (the official version)
Page: https://openlegislation.uk/landfill-amendment-no2-regulations-northern-ireland-2007/regulation-11
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.