f) Approval of site closure plan report. Many states require that a
final site closure plan report be submitted for approval before a landfil
site can be officially closed. The closure plan report incorporates the
above-mentioned activities. The required components of the closure plan
report are given in Table 27.
g) Postclosure monitoring. The monitoring schedule will call for
frequent monitoring initially (e.g., once per month) with these frequenci
generally reduced after a year or so if there are no problems during that
time. Postclosure monitoring elements to be covered include:
1) Groundwater quality.
2) Leachate volumes generated and effectiveness of leachate
control facilities in controlling infiltration into groundwater.
3) Surface water quality.
4) Effectiveness of landfill gas control facilities in
controlling landfill gas migration.
5) Settlement and subsequent surface ponding.
h) Postclosure maintenance. Maintenance of mechanical items will
generally be per manufacturer's recommendation. Maintenance frequencies
other items will be based on need. Typical maintenance items include:
1) Clearing drainage and flood control facilities of debris
(e.g., mud, leaves, and plant growth if natural channels are employed).
2) Filling surface depressions caused by differential
settlement.
3) Replacement of trees and other vegetation destroyed by
landfill gas in the root zone.
4) Eroded slopes.
5) Ensure that landfill gas control equipment is working and
is being utilized.
6) Maintain pumps to remove collected leachate.
7) Repair damaged road surfaces.
7.7 Personnel. The variety of positions and subsequently, the number of
employees required at a landfill depends on the size of the operation. F
small sites handling less than 50 to 70 tons (45 to 64 metric tons) per d
a single full-time operator may be able to satisfactorily operate equipme
record waste quantities, and perform administrative and maintenance
functions. Larger sites will require more positions, including one or mo
of the following:
a)
Supervisor
b)
Equipment operator.
c)
Check station attendant.
d)
Mechanics.
e)
Laborers.
5.10-107
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