Page 37 - DPR Rishikesh Legacy_Neat

- A properly selected offsite testing laboratory capable of measuring the constituents at
correct detection levels
- A methodology for acquiring and storing data
- A statistical procedure for analysis of the data
- The following instruments/ equipment shall be used for monitoring
- Ground water samplers for monitoring water in wells
- Leachate samplers for leachate monitoring in the vicinity of closure
- Surface water samplers for collection of sample sedimentation basin
- Down hole water quality sensors for measuring conductivity, pH, DO, temperature in
ground water wells and sedimentation basins.
- Portable gas monitors for onsite monitoring of gases
- Active and passive air samplers for monitoring ambient air quantity

It is recommended that location of each type of instrument/ equipment shall be
finalized in consultation with an expert on the basis of topography of the area and
layout of the dumpsite closure. A minimum of 4 sets of ground water monitoring
wells (one up – gradient and three down gradient) for each aquifer are considered
desirable.

Quantitative parameter to be monitored will be;
- Gas quantity;
- Surface water run –off quantity and
- Cover system settlement quantities.
Qualitative parameters to be monitored will be:

- Leachate quality within vicinity of dumpsite closure (if observed)
- Groundwater quality (up gradient and down gradient)
- Surface water quality at the exit of dumpsite closure
- Gas quality within the dumpsite closure
- Air quality above the dumpsite closure and at gas vents
- Air quality at gas control facilities.

The regulatory limits for various parameters of quality will be prescribed by the
regulatory authorities.

4.1.8 PERIODIC INSPECTION AND MAINTENANCE
Periodic inspection and routine maintenance at a dumpsite closure shall be carried
out for a period of 25 year after closure. The following components of a dumpsite
closure are inspected visually to confirm that all functional elements are working
satisfactorily. A maintenance schedule with specified reporting formats is drawn up
after each inspection.

4.1.9 COVER SYSTEM

The final cover is inspected 2 to 4 time a year

- To check that vegetation growth is occurring satisfactorily and that plants are not
showing stunted growth,
- To detect if any erosion gullies have been formed thereby exposing the barrier layers,
- To earmark depressions that may have developed with time and
- To identify ponding of water on the landfill cover. At least one inspection shall be carried
out during or immediately after peak of the monsoon season.
37