A Santa Rosa teen is suspected of being impaired while driving in a Friday collision in west Sonoma County that killed one and seriously injured three, according to the CHP Monday.

CHP officers arrested Isidro Antonio Moya, 19, following Friday’s 4:40 p.m. crash on Valley Ford Road, the CHP said.

Killed in the crash was David Bradley Etling, 18, of Petaluma, one of two passengers in a 2007 Infinity driven by Moya.

“If anyone was going through any sort of problems or going through something bad, he’d help you through it,” said Etling’s friend, Kiera Lager, 16. “He was just so easy to talk to and so willing to help other people. I just know that everyone is heartbroken.”

Etling was a first-year student at Santa Rosa Junior College after completing high school through a private online program, she said. He planned to complete his college coursework at the junior college and transfer to a four-year school, but was also considering joining the U.S. Marines.

The crash occurred north of the community of Two Rock, near Walker Road. The CHP said Moya was speeding east on Valley Ford Road when his car drifted right and lost control, causing the car to spin into the path of a westbound 2012 Lexus.

The Lexus was driven by Douglas Kaye, 70, of Kentfield. Kaye, his passenger Cessna Kaye, 82 of Kentfield, and Moya’s second passenger Allejandro Hernandez, 18, were taken to Santa Rosa Memorial Hospital with major injuries.

Moya had minor injuries and was arrested Friday night on suspicion of driving under the influence of a drug after being treated at the hospital. The CHP didn’t release what drug it suspected.

Moya was booked into the Sonoma County Jail at 10:45 p.m. Friday. He was released Saturday after posting a bond for his $100,000 bail, according to jail records.

The Kayes remained in Santa Rosa Memorial Hospital Monday in fair condition, according to a hospital spokeswoman. Hernandez was not listed as a patient Monday.

Staff Writer Kevin Fixler contributed to this story.

You can reach Staff Writer Randi Rossmann at 707‑521-5412 or randi.rossmann@pressdemocrat.com. On Twitter@rossmannreport.