Find Some Rune that the naga have in their possession in the Ruins of Eldarath and return it to Kim'jael in Azshara.
That wasn't good enough for you? You know how expensive those explosives are? They sell for... oh, nevermind. Fine, you want to make some real money? Cause that's how business is done: you prove you're a valuable employee and then you're rewarded adequately after you stick it out some.
If you're a "valuable" employee, then hit the Ruins of Eldarath and find me some rune that them Blood elves were lookin' for. The naga apparently have it in their possession.