12 2026 02 12 Crestmont CC Stormwater Management Report

4. Urban Hydrology for Small Watersheds, Technical Release No. 55, USDA Soil Conservation Service Publication, June 1986. 5. New Jersey Stormwater Best Management Practices Manual, New Jersey Department of Environmental Protection, Division of Watershed Management, April 2004, last revised March 2024. 6. New Jersey Stormwater Management Rules N.J.A.C. 7:8, last amended July 17, 2023. 7. New Jersey Flood Hazard Area Control Act Rules N.J.A.C. 7:13, last amended July 17, 2023. 8. Township of West Orange Code of Ordinances Chapter 25-29 –Stormwater Control. 9. The Standards for Soil Erosion and Sediment Control in New Jersey, New Jersey Department of Agriculture, revised July 2017. 10. New Jersey Department of Transportation 2015 Roadway Design Manual, last revised December 2023. \\langan.com\data\PAR\data8\101049801\Project Data\_Discipline\Site Civil\Reports\Stormwater\2026-02-12 SWM Report\Eagle Rock Ave Stormwater Management Report.docx 22

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© 2018 Langan Langan Engineering and Environmental Services, LLC. 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900F: 973.560.4901www.langan.com NJ CERTIFICATE OF AUTHORIZATION NO. 24GA27996400 Date: 10/24/2025 Time: 08:35 User: tgreen Style Table: Langan.stb Layout: Layout1 Document Code: FG01-101049802-0202-GR101-0101

© 2018 Langan Langan Engineering and Environmental Services, LLC. 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900F: 973.560.4901www.langan.com NJ CERTIFICATE OF AUTHORIZATION NO. 24GA27996400 Date: 10/24/2025 Time: 08:44 User: tgreen Style Table: Langan.stb Layout: Layout1 Document Code: FG02-101049802-0202-GR101-0101

© 2018 Langan Langan Engineering and Environmental Services, LLC. 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900F: 973.560.4901www.langan.com NJ CERTIFICATE OF AUTHORIZATION NO. 24GA27996400 Date: 10/24/2025 Time: 09:18 User: tgreen Style Table: Langan.stb Layout: Layout1 Document Code: FG03-101049802-0202-GR101-0101

Langan Engineering and Environmental Services, LLC 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900 F: 973.560.4901 www.langan.com NJ Certificate of Authorization No. 24GA27996400 © 2024 Langan Date: 10/23/2025 Time: 12:39 User: tgreen Style Table: Langan.stb Layout: FG04 Document Code: FG04-101049802-0202-CG101-0101

Langan Engineering and Environmental Services, LLC 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900 F: 973.560.4901 www.langan.com NJ Certificate of Authorization No. 24GA27996400 © 2024 Langan Date: 3/5/2026 Time: 10:02 User: tgreen Style Table: Langan.stb Layout: FG05 Document Code: FG05-101049802-0202-CG101-0101

Langan Engineering and Environmental Services, LLC 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900 F: 973.560.4901 www.langan.com NJ Certificate of Authorization No. 24GA27996400 © 2024 Langan Date: 10/23/2025 Time: 13:22 User: tgreen Style Table: Langan.stb Layout: FG04 Document Code: FG06-101049802-0202-CG101-0101

Langan Engineering and Environmental Services, LLC 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900 F: 973.560.4901 www.langan.com NJ Certificate of Authorization No. 24GA27996400 © 2024 Langan Date: 3/5/2026 Time: 10:09 User: tgreen Style Table: Langan.stb Layout: FG07 Document Code: FG07-101049802-0202-CG101-0101

Langan Engineering and Environmental Services, LLC 300 Kimball Drive Parsippany, NJ 07054 T: 973.560.4900 F: 973.560.4901 www.langan.com NJ Certificate of Authorization No. 24GA27996400 © 2024 Langan Date: 3/5/2026 Time: 10:16 User: tgreen Style Table: Langan.stb Layout: FG05 Document Code: FG08-101049802-0202-CG101-0101