Today our laboratory contactors are on site sampling leachate which will be tested in their laboratory. This is done three times a year and it takes roughly two days to sample all the locations.
Leachate is any liquid (in our case this liquid is rainwater) that, in passing through matter, extracts solutes, suspended solids or any other component of the material through which it has passed.
The samples collected are then sent to the laboratory where it is tested for e.g. conductivity, pH, metal contents and BOD (Biological Oxygen Demand). The results from the leachate testing are used together with for example the gas testing results to effectively manage and prevent leachate from reaching the waterways. One of the purposes of the work we do on site is to drastically reduce the amount of leachate formed.
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