# The Landfill (Amendment No.2) Regulations (Northern Ireland) 2007, Regulation 10: Amendment of Schedule 1 (Criteria and Procedures for the acceptance of waste at landfills)


For paragraph 14 of Schedule 1 (criteria for granular stable non-reactive hazardous waste and non-hazardous waste deposited in the same cell with such waste) substitute—
“Criteria for stable non-reactive hazardous waste and non-hazardous waste deposited in the same cell with such waste
14. Stable, non-reactive hazardous waste and non-hazardous waste which is to be landfilled in the same cell with such waste shall only be accepted if—
(a) in the case of granular waste–
(i) it meets the limit values for leaching set out in Table 4;
(ii) it meets the additional criteria set out in Table 5; 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 4; or
(bb) the limit values for leaching set out in Table 5A;
(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 4
Component
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)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 shall be considered as complying with the acceptance criterion for DOC if the result of this determination does not exceed 800 mg/kg.
(c)The value for Total Dissolved Solids can be used alternatively to the values for Sulphate and Chloride.
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
0.5
Zinc
Zn
50
Chloride
Cl-
15,000
Fluoride
F-
150
Sulphate
SO42-
20,000
Dissolved Organic Carbon
DOC
800
Total Dissolved Solids
TDS
60,000
Table 5
Parameter
Value
(a)If this value is not achieved, a higher limit value may be permitted by the Chief Inspector, provided that the Dissolved Organic Carbon value of 800 mg/kg is achieved at L/S=10l/kg, either at the material’s own pH or at a pH value between 7.5 and 8.0.
Total Organic Carbon (TOC)
5%
pH
Minimum 6
Acid Neutralisation Capacity (ANC)
Must be evaluated
Table 5A
Component
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.
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 5B
Parameter
Value
pH of the eluate from the monolith or crushed monolith
Must be evaluated
Electrical conductivity (μS.cm-1m-2) of the eluate from the monolith or crushed monolith
Must be evaluated
Acid Neutralisation Capacity (ANC) of the crushed monolith
Must be evaluated.
”

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Source: https://www.legislation.gov.uk/nisr/2007/258/regulation/10 (the official version)
Page: https://openlegislation.uk/landfill-amendment-no2-regulations-northern-ireland-2007/regulation-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.