PCD Credit 2: Landfill Stormwater Management

 

PCD Credit 2: Landfill Stormwater Management (1 point)

Reciprocal

Intent:

To effectively manage stormwater at a landfill to minimize run-off exposure to waste and production of leachate.

 

Local Government and Industry Requirements:

Develop a comprehensive stormwater management plan that

●      Minimizes stormwater penetration of open and closed cells

 

●      Provides for regular inspection of stormwater control measures

 

●      Meets the performance objectives of the stormwater management system

 

●      Keeping and maintaining comprehensive operations, maintenance, and discharging records

Demonstrate that the landfill has an effective stormwater management system in place to prevent precipitation from entering the waste, including:

●      Landfill must not be sited:

○      in wetlands

○      in the 100-year flood plain of adjacent rivers or streams 

●      Leachate and stormwater management systems must be separate

 

●      Landfill is designed and managed to minimize oozing

 

●      Stormwater run-on must not come within 100 yards of the base of capped or active cells.

 

●      Stormwater runoff must not exit site untreated

Potential Strategies:

●      Design of the daily cell to minimize ponding and run-off

●      Maintaining the slopes of the landfill to minimize erosion and increased runoff

●      Define existing and intermittent flow channels and the area and characteristics of the contributing watershed;

●      Schedule landfilling operations to minimize disturbed areas (i.e., phase-in operations);

●      Attempt to limit the handling of topsoil or cover materials to only one operation;

●      Construct and stabilize stormwater controls in advance of landfilling;

●      Stop flowing water from entering the active fill area with permanent perimeter diversions;

●      Establish a complete sequence of controls (i.e. interception, conveyance, transportation, energy dissipation and sediment disposition);

●      Use stormwater detention to improve the quality and reduce the intensity of stormwater runoff;

●      Plan for the National Pollutant Discharge Elimination System (NPDES) stormwater permit by keeping good operations records and monitoring discharges off the site;

●      Use a surface water collection/ removal (SWCR) system immediately above the hydraulic barrier in the final closure cap. Geonets, geocomposites and/or granular material can be used for this purpose;

●      Inspect and maintain controls after each significant storm

●      Integrate run-off/run-on and erosion and sediment control into every phase of the landfill operation.

Resource on how to measure/manage stormwater:

https://www.waste360.com/mag/waste_fighting_elements_keys

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