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The Environmental Permitting (England and Wales) Regulations 2010

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Interpretation of the Decision Annex for the exercise of relevant functions: additional acceptance criteria in relating to monolithic waste

This section has no associated Explanatory Memorandum

9.  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—

ComponentSymbolmg/m2
ArsenicAs1.3
BariumBa45
CadmiumCd0.2
Total ChromiumCrtotal5
CopperCu45
MercuryHg0.1
MolybdenumMo7
NickelNi6
LeadPb6
AntimonySb0.3
SeleniumSe0.4
ZincZn30
ChlorideCl-10,000
FluorideF-60
SulphateSO42-10,000
Dissolved Organic CarbonDOCMust be evaluated

(ii)it meets the additional criteria set out in the following table—

ParameterValue
pH of the eluate from the monolith or crushed monolithMust be evaluated
Electrical conductivity (μ S.cm-1m-2) of the eluate from the monolith or crushed monolithMust be evaluated
Acid Neutralisation Capacity (ANC) of the crushed monolithMust 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—

ComponentsSymbolmg/m2 (1)
(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.

ArsenicAs20
BariumBa150
CadmiumCd1
Total ChromiumCrtotal25
CopperCu60
MercuryHg0.4
MolybdenumMo20
NickelNi15
LeadPb20
AntimonySb2.5
SeleniumSe5
ZincZn100
ChlorideCl-20,000
FluorideF-200
SulphateSO42-20,000
Dissolved Organic CarbonDOCMust be evaluated

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