11 Pa.C.S. § 127A10
(f) Reduction or cancellation of assessment.— The department, in administrative review, or the appeals board, on appeal, may reduce or cancel a proposed assessment if it is determined that any of the following did not conform to the provisions of this chapter:
(g) Elimination of civil penalty.— The department, in administrative review, or the appeals board, on appeal, may reduce a proposed assessment by eliminating the civil penalty portion of the statement of costs if any of the following apply:
(2) The owner did not receive the notice to remove the public nuisance, did not have knowledge of the public nuisance and could not, with the exercise of reasonable diligence, have had knowledge of the public nuisance.
Cross References. Section 127A10 is referred to in section 127A11 of this title.