Forge 1614
Mekanism-1.7.10-8.1.9.267.jar
MekanismGenerators-1.7.10-8.1.9.267.jar
MekanismTools-1.7.10-8.1.9.267.jar
SMP
Linux
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)

Steps to reproduce:
Create a solar evap tower 15 - 18 blocks high (biome doesn't matter)
Place controller down near the bottom of the tower (+2 blocks up from base)
Forces a 8GB instance of just Mek alone to push past 8GB and start to use swap (memory leak)

This has been fixed for v9, thanks.