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Coal Combustion Waste Management at - DOE - Fossil Energy ...

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TABLE K.1 (Cont.)<br />

ID St<strong>at</strong>e Granted<br />

Variance<br />

C<strong>at</strong>egory<br />

205 WV Yes Landfill gas<br />

management<br />

requirements<br />

204 WV Yes Landfill gas<br />

management<br />

requirements<br />

204 WV Yes Liner<br />

requirements<br />

205 WV Yes Liner<br />

requirements<br />

204 WV Yes Loc<strong>at</strong>ion<br />

requirements<br />

Variance<br />

Description<br />

Variance to waive the requirement for<br />

management of decomposition gases<br />

gener<strong>at</strong>ed within a landfill.<br />

Variance to waive the requirement for<br />

management of decomposition gases<br />

gener<strong>at</strong>ed within a landfill.<br />

Variance to waive the requirement for<br />

surface impoundments to have double<br />

liners and leach<strong>at</strong>e-collection systems.<br />

Variance to waive the requirement for<br />

surface impoundments to have double<br />

liners and leach<strong>at</strong>e-collection systems.<br />

Variance to waive the prohibition on<br />

loc<strong>at</strong>ing a new SWLF above an<br />

underground mine.<br />

Regul<strong>at</strong>ion<br />

Summary<br />

Concentr<strong>at</strong>ions of methane or other<br />

explosive gases must not exceed 25% of<br />

the lower explosive limit for the gas. Gas<br />

monitoring programs are required, and the<br />

proposed gas monitoring plan must be<br />

included in the landfill applic<strong>at</strong>ion.<br />

Decomposition gases gener<strong>at</strong>ed within a<br />

landfill must be controlled to avoid hazards<br />

to health, safety, or property by meeting<br />

certain requirements regarding control,<br />

monitoring, and reporting the detection of<br />

explosive gases such as methane.<br />

Double liners required. Top = synthetic<br />

> 60 mil; bottom = compacted clay > 2 ft<br />

with permeability < 1 × 10-7 overlain by<br />

synthetic > 60 mil. Leak detection system<br />

required between liners. Existing surface<br />

impoundments must be already compliant,<br />

retrofitted, or closed.<br />

Surface impoundments must have two<br />

liners and a leak detection system.<br />

Impoundments in use without liners and<br />

leak detection systems must close or be<br />

retrofitted.<br />

New SWLFs and l<strong>at</strong>eral expansions cannot<br />

be loc<strong>at</strong>ed above underground mine<br />

workings or within the critical angle of<br />

draw of such workings, unless otherwise<br />

approved by the Secretary in writing.<br />

Regul<strong>at</strong>ion<br />

Cit<strong>at</strong>ion<br />

33 CSR 4.10; 33 CSR 3.10.a.2;<br />

33 CSR 3.10.a.4<br />

33 CSR 4.10<br />

33 CSR 4.8.c.3.B<br />

33 CSR 4.8.c.30B<br />

33 CSR 3.2.k<br />

K-12

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