Fig. 1: Map of landfill sampling locations at the Southern Ontario landfill. | ISME Communications

Fig. 1: Map of landfill sampling locations at the Southern Ontario landfill.

From: Substrate-restricted methanogenesis and limited volatile organic compound degradation in highly diverse and heterogeneous municipal landfill microbial communities

Fig. 1

Two groundwater wells accessing the adjacent aquifer were sampled. The three samples from the leachate collecting cistern were all sampled from the same cistern at two time points. Two filter sizes were used for collecting microbial biomass on July 14, 2016 (CLC_T1_0.1 µm filter and CLC_T1_0.2 µm filter) and one filter size was used on July 20, 2016 (CLC_T2_0.1 µm filter). The three leachate wells are located within the active landfill, and leachate from these wells is pumped to the leachate collecting cistern. The catchment area for LW3 has an active leak infiltrating into the groundwater near GW1. GW1, the impacted groundwater well, shows geochemical evidence of leachate infiltration into the aquifer, where GW2 is upstream and shows no leachate chemical signature in the groundwater. The topographic map was modified from maps provided by the Ontario Ministry of Natural Resources and Forestry.

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