These guys are wrong, sorry. There is no use for an extra pump in your situation. In fact I just checked NJ homebrew laws and you are limited to 2 pumps per household. You should find a level 7 containment plant to and give it to them to properly dispose of.
What's that, you don't have any level 7 containment plants near you? Don't worry, there is one near me and I can handle that part for you. Just send me the pump and I'll take care of the rest.