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/kgf1 f2
		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 Carbonf3	DOC	1,000
Total Dissolved Solidsf4	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) f5	10 %
Total Organic Carbon (TOC) f6	6 %
Acid Neutralisation Capacity (ANC)	Must be evaluated

Table 8

Components	Symbol	mg/m2f7 f8
(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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