# The Environmental Permitting (England and Wales) Regulations 2010, Paragraph 9: Interpretation of the Decision Annex for the exercise of relevant functions: additional acceptance criteria in relating to monolithic waste


When interpreting the Decision Annex for the purposes of paragraph 5(3)—
(a) point 2.3.1 is to be read as if, in addition to the criteria listed, it requires the satisfaction of the following criteria in relation to stable, non-reactive monolithic hazardous waste and non-hazardous waste which is to be landfilled in the same cell with such waste—
(i) it meets either—
(aa) the limit values for leaching set out in the table in point 2.3.1, or
(bb) the limit values for leaching set out in the following table—
Component
Symbol
mg/m2
Arsenic
As
1.3
Barium
Ba
45
Cadmium
Cd
0.2
Total Chromium
Crtotal
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
(ii) it meets the additional criteria set out in the following table—
Parameter
Value
pH of the eluate from the monolith or crushed monolith
Must be evaluated
Electrical conductivity (μ S.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
(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%;
(b) point 2.4.1 in the Decision Annex is to be read as if, in addition to the criteria listed, it requires the satisfaction of the following criteria in relation to monolithic waste to be accepted at a landfill for hazardous waste—
(i) it complies with paragraphs (a)(ii) to (a)(v), and
(ii) it meets either—
(aa) the limit values for leaching set out in the table in point 2.4.1, or
(bb) the limit values for leaching set out in the following table—
Components
Symbol
mg/m2
(1)The regulator may include conditions in an environmental permit authorising limit values for specific parameters (other than Dissolved Organic Carbon) up to 3 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
Crtotal
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/ukdsi/2010/9780111491423/schedule/10/paragraph/9 (the official version)
Page: https://openlegislation.uk/draft-environmental-permitting-england-and-wales-regulations-2010/schedule-10/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.