LONDON, Aug 22 (Reuters) – The release of Nigeria’s October crude oil loading programs began on Monday amid further signs that supply levels were falling amid easing supply concerns.

* Nigeria’s Qua Iboe crude stream will load four loads in October, a trade source said Monday, citing a preliminary load schedule, down from September.

* Qua Iboe: Exxon offered freight believed to be destined for September at the dated Brent price plus $6.50, 50 cents lower than the…