On or before one year following the effective date of this section, the department shall modify the New York State Stormwater Management Design Manual to include the following provisions:

1. Require signage prohibiting swimming and wading, warning of possible contamination or pollution of the stormwater retention pond, and a description with the depth of the stormwater retention pond;

2. Define a reasonable slope past the aquatic bench to limit the immediate drop off to the deeper end of the stormwater retention pond;

3. Require aquatic vegetation be established in the aquatic and safety benches before the stormwater retention pond is rendered in-service;

4. Ensure maintenance plans include a requirement for examining the status of safety features by the maintenance authority in their routine maintenance schedule of stormwater retention ponds; and

5. Any other provisions the department deems essential to further promote safety in and around stormwater retention ponds.