Usually carrying a ton of dirt, a dump truck may warn that someone in your life is about to dump a load of dirt on you. Thus, it may remark on being the target of ridicule. It may also carry away the negativity in your life. (See Truck)... Ariadne's Book of Dream
(Dump; Garbage) In a dream, a garbage dump represents the world and its refuse represents money. Ifone’s house becomes a garbage dump, or if one buys or inherits a dump, or if he manages one in a dream, it means dispelling fear, recovering from illness or pursuing the road to prosperity and success in this world. It also means dispelling poverty, receiving an inheritance or getting married. Otherwise, the dump represents one’s business, office or store. As for a governor, a garbage dump in a dream represents his treasury.
If one takes off his clothing and stands naked on top of a pile of trash in a dream, it means that he will lose his office, and ifhe is sick, it means his death, and if he is wealthy, it means renouncing his wealth and status, or pursuing an ascetic life.... Islamic Dream Interpretation