Gregory Ullrich, 24, of Arvada pleaded guilty to two counts of vehicular homicide in the deaths of Alexander Livesay and Chayce Miller in January.
They were killed when Ullrich crashed his car into a light pole at 92nd and Wadsworth Boulevard on May 13, 2006.
Ullrich was driving, even though he had previously been convicted of drinking and driving and his license had been revoked.
Blood tests have shown Ullrich had a blood alcohol level twice the legal limit when he crashed last May.
Prosecutors had asked the judge for the maximum sentence of 24 years because of Ullrich's previous conviction. The defense had asked for an eight year sentence.
The Jefferson County District Attorney's office says Ullrich was going between 55 and 67 mph in a 45 mph zone when he hit the pole.
Ullrich took the stand on Monday during the sentencing hearing, telling the family and friends of Livesay and Miller he was truly sorry.
"I'm sorry for letting my addiction and my life get so out of control and so destructive that I couldn't see five minutes further than my next drink," he said. "Just because I was careless with my life did not give me the right to be careless with the lives of others."
"I can stand here and apologize a million times, but all these folks and these people here just want their friends and their family and their sons back. So there's no amount of time that you can give me that will make up for what I am responsible for," said Ullrich.
Earlier, some of those friends and families had testified before the judge.
"I'm afraid of love. Everyone goes on with their lives. No one understands what has happened. No one can or wants to imagine. This is hell, there's no question in my mind. This wasn't how it was supposed to be," said Erin Miller, Chayce Miller's mother.
"The outpouring of love and support for these two young men was absolutely daunting," said Christine Hunsucker, a friend of the victims.
"Chayce Miller was a completely different kid. This kid was everybody's friend, everybody's son, everybody's brother," said Michael Osborne, a friend of the Miller family.
Several Pomona High School students were also in court on Monday in support of Miller and Livesay, who were both students at Pomona. The students wore black shirts to honor the two teens.
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