Amends the Environmental Protection Act. Provides that one year after the effective date of the amendatory Act, the Agency shall develop and begin implementation of requirements for a Stormwater Pollution Prevention Plan or other similar best management practice requirements, to be included in National Pollutant Discharge Elimination System (NPDES) permits issued to facilities regulated under certain federal regulations. Provides that these requirements apply to the control of plastic pellets or other preproduction plastic materials, in stormwater runoff from these facilities.