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Municipal Solid Waste Defined in 40 CFR Part 258.2 Regulated by 40 CFR Part 258: RCRA Subtitle D.

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Presentation on theme: "Municipal Solid Waste Defined in 40 CFR Part 258.2 Regulated by 40 CFR Part 258: RCRA Subtitle D."— Presentation transcript:

1 Municipal Solid Waste Defined in 40 CFR Part Regulated by 40 CFR Part 258: RCRA Subtitle D

2 Landfill Diagram Solid Waste

3 Liner Compacted Clay Liner HDPE Liner

4 Liner Purposes To prevent leachate from seeping into groundwater To prevent landfill gas from migrating out of the landfill below grade

5 Liner Purposes To prevent leachate from seeping into groundwater To prevent landfill gas from migrating out of the landfill below grade Typical Materials 3-foot layer of compacted soil, underlying 60-mil high density polyethylene (HDPE)

6 Leachate Drainage Blanket and Collection System Leachate Drainage Blanket Collection Pipes

7 Leachate Drainage Blanket and Collection System Purposes To enhance the effectiveness of the liner by minimizing leachate head To protect the liner from puncture

8 Leachate Drainage Blanket and Collection System Purposes To enhance the effectiveness of the liner by minimizing leachate head To protect the liner from puncture Typical Materials Blanket: 1 foot of sand or gravel, underlying Collection System: HDPE or PVC piping

9 Final Cover System Protective Layer Vegetation Low Permeability Layer FML Liner

10 Final Cover System Composed of: Low Permeability Layer Protective Layer

11 Low Permeability Layer of Final Cover System Purposes To minimize leachate production by shedding precipitation rather than allowing it to percolate through waste

12 Low Permeability Layer of Final Cover System Purposes To minimize leachate production by shedding precipitation rather than allowing it to percolate through waste To prevent leachate popouts

13 Low Permeability Layer of Final Cover System Purposes To minimize leachate production by shedding precipitation rather than allowing it to percolate through waste To prevent leachate popouts To provide a barrier (along with the protective layer) between the waste and receptors

14 Low Permeability Layer of Final Cover System Purposes To minimize leachate production by shedding precipitation rather than allowing it to percolate through waste To prevent leachate popouts To provide a barrier (along with the protective layer) between the waste and receptors To prevent uncontrolled emission of landfill gas into atmosphere through top of landfill

15 Low Permeability Layer of Final Cover System Typical Materials Compacted soil and 30 or 40-mil polyethylene or PVC flexible membrane liner (FML)

16 Protective Layer of Final Cover System Purposes To protect the low permeability layer from freeze/thaw, desiccation cracking, root penetration and puncture To provide a durable, low maintenance surface

17 Protective Layer of Final Cover System Typical Materials Uncompacted soil with Grass on surface

18 Gas Monitoring System Purposes To characterize gas production within the landfill To detect any methane moving out of the landfill either below grade or through the final cover system

19 Groundwater Monitoring System Groundwater Monitoring Well

20 Groundwater Monitoring System Purpose To detect any groundwater contamination caused by the landfill

21 Surface Water Control System Purposes To enhance the effectiveness of the final cover system in shedding precipitation, and To prevent surface water contamination

22 Landfill Operation Dry Entombment Attempt to prevent introduction of water or air to the landfill – Minimal degradation.

23 Landfill Operation Dry Entombment Attempt to prevent introduction of water or air to the landfill – Minimal degradation. Bioreactor Any liquid (other than leachate) is added in a controlled fashion into the waste to accelerate or enhance the anaerobic (without oxygen) biodegradation of the waste.

24 Gas Production Graph


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