HANOVER — The director of Dartmouth’s Outdoor Programming Office resigned on Thursday, the same day the college issued a summary of an investigation that found “significant room for improvement” after a student who was unprepared for the snow and cold became lost for two days on a college-sponsored trip to the White Mountains.

Tim Burdick, a 1989 Dartmouth College graduate, physician and lifelong outdoors enthusiast, started in the post last summer but resigned on Thursday.

Asked for comment, Burdick, who was hired in part for his expertise in risk management and wilderness medicine, declined to say precisely why he resigned.

“It was a great honor to serve as the Director of Dartmouth Outdoor Programs for 11 months,” Burdick said via email. “I’m proud of the many enduring things the staff and student leaders accomplished during my tenure. I wish them and Outdoor Programs all the best going forward.”

Burdick himself was not on the trip in May, but the Outdoor Programs Office has administrative responsibility for a number of programs at Dartmouth including the student-led Dartmouth Outing Club, outdoor education classes, the Ledyard Canoe Club and the Moosilauke Ravine Lodge.

The college brought in an external investigator after Arun Hari Anand, 21, became lost on Mount Moosilauke on May 11 while on a “Hiking Overnight” class that originally had been scheduled to take place on the 2,303-foot Moose Mountain in Hanover. Instead, it was shifted to Moosilauke, which has an elevation of 4,802 feet and still had deep snow at higher elevations.

Anand, who had turned back and was trying to get to the college-owned Moosilauke Ravine Lodge by himself, was found after an extensive search two days later shoeless, dehydrated and hypothermic, and a New Hampshire Fish and Game official said it was a “miracle” he had survived.

Dartmouth last month said there were “a number of troubling factors” involved and pledged to pay for rescue costs, and to investigate what had gone wrong. On Thursday it released a summary — but not the entire report — of the investigation.

The two-page executive summary does not name any of the people on the trip, but said the Outdoor Programming Office will in the future “take steps to improve the preparation of students” going on college-backed excursions, “including the conditions they might expect, the gear they would require and appropriate ways for the group to approach the hike.”

The qualifications of staff members who are leading trips also will “be more closely scrutinized,” as will their adherence to college protocols, the report said.

Other changes will include making sure all physical education classes for credit will have contingency plans for bad weather; requiring that college trips use “reasonably available” communications technology for trip leaders in the backcountry, where cell service is spotty; and requiring Outdoor Programming Office leaders “to personally review and approve the plans for all OPO-led trips.”

The report said Anand, who is a member of the class of 2019 but did not graduate earlier this month, suffered “significant exposure-related injuries.”

Attempts to reach him for comment on Friday were unsuccessful, though he was seen on campus this week.

Burdick, who also has a master of science degree in forestry, previously worked as associate medical director and clinical leader at Dartmouth-Hitchcock Manchester and as a medical officer on the Stowe Mountain Rescue team, among other jobs.

He said he had several “great job opportunities” in the Upper Valley and intends to remain part of the Upper Valley community.

“I have a wonderful life, and it’s important to keep all things in perspective,” he said in his email responding to questions about his resignation. “There are lots of trails to walk in this journey.”

John P. Gregg can be reached at jgregg@vnews.com.