Police recommended that Garrison, "Tweener" in the Fox's "Prison Break," be charged with gross vehicular manslaughter and other charges, People magazine said.
The Los Angeles city attorney's office is reviewing the report and deciding whether to prosecute, People magazine said.
Garrison was driving his SUV with three teenage passengers when the vehicle struck a tree Dec. 2, police said. A 17-year-old male passenger died and two 15-year-olds were injured.
Beverly Hills police said Garrison's blood alcohol level was 0.20 percent -- more than two times California's limit of 0.08 percent. A blood test also revealed he had cocaine his system, the report said.
If convicted of gross vehicular manslaughter, Garrison could face 10 years in state prison. The other charges police recommended would add to the term.
Garrison's attorney, Harland Braun, criticized police for releasing test results before showing them to his client and before the district attorney made a decision on charges.
Braun said Garrison had "a couple of drinks" but was not driving impaired. Braun said faulty brakes could have been the cause.