Johnny Lujan Aguon, 58, will spend the next 30 years of his life in the custody of the Department of Corrections.
Superior Court Judge Arthur Barcinas sentenced Aguon Thursday after he was convicted of first-degree criminal sexual conduct and second-degree criminal sexual conduct.
The abuse started when the victim was 5 and continued through her middle school years.
"I do maintain my innocence," Aguon said. "I will not violate. I am a good, law-abiding citizen. I do not commit crime. I always stop crime."
Aguon said the charges he was found guilty of are "bogus."
"I did not commit such a heinous crime," he said. "I wouldn't do that because when I was 8 years old it happened to me by a male. I told myself that's not going to happen to anybody. I follow some kind of creed that I would never be violated or violate anybody."
The victim also spoke before the court handed down Lujan's 30-year sentence.
"It affected me because I was thinking it was all my fault ... I feel so ashamed for not letting anyone know ever since it first started," the girl said during the sentencing. "I didn't want police to be involved. All I wanted was for him to stop doing what he was doing."
Prosecuting attorney Christine Tenorio said the evidence was clear at trial, despite Aguon's claims of innocence.
"It's very clear during the trial, and even right now, the victim has a lot of self-blame and I think that is going to have a lasting impact on her," Tenorio said. "On top of the sexual abuse and violation of her physically, there's been an impact on her mental health."
The prosecution recommended the sentence for each criminal sexual conduct charge against Aguon to run concurrently, which means he would serve his sentence all at once.
Judge Barcinas decided in favor of the recommendation.
"The offender's conduct caused harm," said Barcinas, "and demonstrated no sense of remorse or acceptance of responsibility."
Aguon was immediately sent to prison.
He plans to appeal his conviction and sentencing.