Stanley, 30, was a volunteer with the organization for five years, beginning in 2009. He is also a former City of Ottawa lifeguard and swim coach.
Stanley pleaded guilty in late June to 10 counts of sexual interference, three counts of luring and three counts of invitation to sexual touching. The incidents occurred when the boys were between 12 and 15 years old.
The molestations began in the summer of 2012 and continued for a year and a half, according to an agreed statement of facts read in an Ottawa courtroom.
Stanley took the boys to movies, hosted visits in his parents' basement and drove the boys to secluded locations, court heard.
Stanley told one boy not to tell anyone about the sexual abuse because he would get in trouble, court also heard.
Another Scouts leader told CBC News he warned the organization that Stanley was spending time alone with boys, despite the "two-deep rule" that requires scouts to always be under the supervision of at least two adults. He said some of the abuse could have been prevented had the organization heeded his warnings sooner.
An Ottawa group commissioner was dismissed for inaction.
Andrew Price, executive commissioner and CEO of Scouts Canada, has said the group’s national level only heard about the allegations at Stanley's arraignment. He said several people in the local group have left and at least one person was asked to leave for not forwarding the complaints.
The Fifth Estate: Scout's Honour
A 2011 investigation by CBC-TV's The Fifth Estate and the Los Angeles Times revealed that Boy Scouts of America and Scouts Canada recorded names of pedophiles who infiltrated their ranks, but failed to share the information with the authorities. Watch "Scout's Honour" here.