AREA A/B ENGINEERING REPORT - Waste Management

I II III IV V VI VII VIII
Figure A-1: Generalized Phases of Landfill Waste Degradation
(from Kjeldsen, et al., 2003)
Geosyntec Consultants
Technical evaluations of MSW landfill characteristics such as these reveal that the chemistry of
leachate from modern MSW landfills is well documented and understood. Evaluation of landfill
leachate quality over time shows that leachate quality follows predictable patterns and that
leachate quality improves to the extent that over time a landfill will not be expected to impact
groundwater. Similarly, evaluation of LFG data over time shows predictable patterns that are a
function of site characteristics, and that LFG can be managed using standard engineered
collection and control systems and can be monitored for effectiveness for as long as necessary to
protect human health and the environment (HHE).
MD10186.doc 106 29 March 2009