A plea to reduce the bail for the driver involved in a fatal car crash in Marshall in January was denied on Tuesday by a Marin County Superior Court judge. Lucas McFadden, 23, will remain in custody with a $500,000 bail until his preliminary hearing on June 4. The Petaluma resident was charged with gross vehicular manslaughter while intoxicated after his Honda drifted into incoming traffic on Highway 1 and crashed into a truck, killing 18-year-old Ricardo De Santiago, his passenger, on Jan. 29. He faces up to 10 years in a state prison. Mr. McFadden allegedly lied to a police officer when he stated that hadn’t consumed alcohol. A blood test later conducted at the hospital indicated his blood-alcohol level to be .281 percent, three times the legal limit. Michael Lizo Schroettner, Mr. McFadden’s public defender, pleaded with Judge James Chou to reduce the bail to $100,000. He noted Mr. McFadden’s lack of prior convictions and the dozen family members and friends who appeared in court to support him as evidence that his client does not pose a threat to society. “He’s a local boy,” Mr. Schroettner said. “He knows the seriousness of the charges. His family and community is here to support him. Bail at $100,000 is sufficient to meet government and community interest.” Judge Chou was not convinced, however. “Mr. McFadden has already demonstrated that he acted in a grossly negligent way,” he said. “We’re not talking about a run-of-the-mill D.U.I. We’re talking about vehicular manslaughter.” Mr. McFadden, appearing in court with his right arm in a sling, spoke only once during the hearing, when he agreed to have his next hearing in June, as opposed to an earlier date, to allow his defense to fully prepare his case. (Mr. Schroettner said he was missing documents from the prosecution.) On Jan. 29, Mr. McFadden and Mr. De Santiago, a Tomales High School graduate and brother to four siblings, had just left the Marshall Store, where they both worked, when they collided headlong into a dump truck driven by Kevin Furlong, a 54-year-old Tomales resident. Mr. De Santiago was pronounced dead at the scene and Mr. McFadden suffered a broken pelvis and shoulder, a rib fracture and head injuries. Mr. Furlong was uninjured. Judge Chou stated that the nature of the accident—driving while under the influence at 4:30 p.m. on a Monday—and the empty containers of alcohol discovered at the accident proved Mr. McFadden was a substantial risk.