Fig. 2 shows the dynamics of pH, DOC, and EC in the column outflow.
Leachate pH increased gradually and leveled off after about three
storms. Mean leachate pH of all storms (n = 35) was significantly
higher for Silver Springs than Royal Classics compost and influent
stormwater with LSD of 0.14. The difference in pH between the two
treatments can be explained based on the pH values of both solid composts,
with the Silver Springs compost having a higher pH than Royal
Classics compost (Table S1).