In a July 30 letter to the city, DNR spokeswoman Li Lan Carson wrote, “If a fee is charged at the facility, it must be applied to all users of the facility. Or in the case of a special event where the fee will be waived or reduced, it must be applied to all users. It is not acceptable to apply a waiver or fee reduction to a small group or special group of users while other members of the public are still charged full price.”