Clarifies procedures for maintenance of underground storage tanks.

S 4992 clarifies New Jersey's regulations for underground storage tanks (USTs) by requiring the Environmental Protection Department to adopt specific rules within one year. The bill mandates standardized testing schedules for tanks based on age, stored substance, proximity to water sources, and corrosion risks, along with construction and operation standards aligned with federal EPA guidelines (with stricter rules allowed in wellhead protection areas). UST owners and operators must maintain records, report leaks, take corrective actions, designate a responsible person for compliance, and maintain financial responsibility for cleanup. The rules must also be incorporated into the state construction code within 60 days.