The irrigation events on LEO-C and LEO-W on 2/10/15 revealed that water leaked from several of the port holes in the base of the structure.  On LEO-C leaks were observed at port holes at x=2, 4, 6, 8, 10, 14, 16 and y=0.  Leaks were also observed at x=6, y= -1 and +1.  On LEO-W leaks were observed at x=2, 4, 6, 8, 10, 12, 16 and y=0.  To correct these leaks small holes were drilled into the acrylic tubing where sensor cables span out of the slope.  Dural 2-part low viscosity epoxy was injected through the hole to fill air space within the tubing, and hopefully provide a perfect seal.  The rain event on 4/29/2015 on LEO-C and LEO-W generated a water table that covered most of these locations, and no leaks were observed.  We preemptively performed the same sealing operation on ports at x=2, 4, 6, 8, 10, 12, 14 and y=-2 and +2 on LEO-C and LEO-W, in anticipation that the water table may regularly expand to that extent.

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