In order to facilitate the earliest possible start of the urban fishing program and to gain familiarity with the types of lakes that are most suitable for rehabilitation for sportfishing purposes, the Department of Parks and Recreation shall make grants, on a demonstration basis during the 1981–82 fiscal year only, for the rehabilitation of lakes that satisfy the requirements and criteria set forth in this chapter and are representative of lakes of different size, physical characteristics, and degree of degradation found in major metropolitan areas of the state.