A well-intentioned effort by the Inverness Association to reduce fire risk has resulted in a warning from the county. Earlier this month, the association cut down a grove of acacia trees on a lot they own at the corner of Vison Road and Sir Francis Drake Boulevard. A Marin County code enforcement officer tagged the site last week and told them to get in touch. “It’s a clear violation of the Marin County Code,” said Gil Sanchez, supervisor of the code enforcement division. The property has a stream running through it, making it a potentially sensitive environmental area, Mr. Sanchez said. Removing vegetation from streams or land adjacent to them requires a coastal development permit. “I’ve instructed the property owners to stop the work until they apply and get approval,” he said. The warning from the county took William Barrett, the association president, by surprise. “We don’t think we did anything that warranted being tagged,” he said. “We do know there are people in the community who are very concerned anytime a tree gets cut down. But acacias are very burnable, and we were cutting them down to reduce the fuel load.” The Marin Wildfire Prevention Authority has made a priority of removing potential wildfire accelerants from roadsides. The association intended to plant native trees on the site after clearing it, said Jerry Meral, an Inverness resident and board member of Fire Safe Marin. “Public safety was the primary purpose,” he said.