FIG. 1 is a perspective view of a leaching chamber embodying the ornamental design of the present invention;
FIG. 2 is a side view thereof, the opposite side view being a mirror image;
FIG. 3 is a top view thereof;
FIG. 4 is a front view thereof; and,
FIG. 5 is a rear view thereof.
The broken lines in FIGS. 1-5 are for illustrative purposes only and form no part of the claimed design.