This fund has been created for the purpose of accumulating funds for the expansion and improvement of controlled substances related law enforcement activities including drug awareness education and the purchase, lease and maintenance of equipment, and any other items necessary for drug enforcement by the Cle Elum police department with the advice and consent of the Cle Elum city council. The moneys deposited in the fund shall be expended only for such purposes and for no other purposes unless directed by the city council.