Despite being asked to clean up after themselves, about 3,000 students celebrating Memorial Day weekend left piles of debris

College students celebrating Memorial Day weekend by California’s Shasta Lake left behind hoard of trash, according to US Forest Service officials.

Last weekend, approximately 3,000 students from the University of California, Davis and the University of Oregon partied at Shasta Lake, a 30,000-acre reservoir in the golden state, and left piles of debris cluttered around the lake.

According to forest service officials, despite being asked to clean up after themselves, the students left behind trash including cups, cans, plastic wrappers and pool floats.

Speaking to CBS, Shasta-Trinity National Forest recreation staff officer Deborah Carlisi said that staff members handed out trash bags to students for them to pack up their items.

“Some students used them, some students didn’t,” Carlisi said. A three-person cleanup crew ultimately spent six hours picking up the trash around the lake. Nevertheless, not all the trash was removed.