... not know when defendant initiated remediation of the subject property. N.J.S.A. 58:10B-24.1(a), effective on August 2, 2006, read in pertinent part ... in effect as of May 19, 1997 at the latest.] N.J.S.A. 58:10B-24.1(a) was amended by L. 2007, c. 276, ยง 1 ...