Langan Rebuttal Report 9 15 2025

Global Stability Study for Eastern Slope near Building D West Essex – Highlands Development West Orange, New Jersey Langan Project No.: 101049801 15 September 2025 Page 7 of 7 CLOSURE We maintain the analysis and conclusions presented in our 18 June 2025 report. Please call with questions. Sincerely, Langan Engineering and Environmental Services, LLC Mark K. Seel, P.E. Associate Principal / Vice President Ronald D. Boyer, P.E. Senior Principal / Senior Vice President MKS/RDB:mks Enclosure(s): Exhibit A – RMR Output files Exhibit B – SlopeW Output files Exhibit C – Rock Core Photos Exhibit D – N-value – Friction correlations NJ Certificate of Authorization No. 24GA27996400