Pennsylvania Code
Title 25 - ENVIRONMENTAL PROTECTION
Part I - Department of Environmental Protection
Subpart D - Environmental Health and Safety
Article VI - General Health and Safety
Chapter 245 - ADMINISTRATION OF THE STORAGE TANK AND SPILL PREVENTION PROGRAM
Subchapter E - TECHNICAL STANDARDS FOR UNDERGROUND STORAGE TANKS
OUT-OF-SERVICE UNDERGROUND STORAGE TANK SYSTEMS AND CLOSURE
Section 245.453 - Assessing the site at closure or change-in-service

(a) Before permanent closure or a change-in-service is completed, owners and operators shall measure for the presence of a release where contamination is most likely to be present at the underground storage tank site. Owners and operators shall sample for releases. Sampling may be accomplished in a manner consistent with the Department technical document entitled "Closure Requirements for Underground Storage Tank Systems" or in a manner at least as protective of public health and safety and the environment and which meets all statutory and regulatory requirements.

(b) If contaminated soils, contaminated groundwater or free product as a liquid or vapor is discovered under subsection (a), or by another manner, owners and operators shall begin corrective action in accordance with Subchapter D (relating to corrective action process for owners and operators of storage tanks and storage tank facilities and other responsible parties).