12 2026 02 12 Crestmont CC Stormwater Management Report

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: 10:22 User: tgreen Style Table: Langan.stb Layout: FG09 Document Code: FG09-101049802-0202-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: 10:29 User: tgreen Style Table: Langan.stb Layout: FG10 Document Code: FG10-101049802-0202-CG101-0101

DRAWINGS

OVAL RD EAGLE ROCK AVE VE ELA UR LA 2/12/2026 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: 3/4/2026 Time: 18:10 User: tgreen Style Table: Langan.stb Layout: CG101 Document Code: 101049802-0102-CG101-0102

OVAL RD EAGLE ROCK AVE VE E LA A UR L 2/12/2026 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: 3/4/2026 Time: 18:12 User: tgreen Style Table: Langan.stb Layout: CG102 Document Code: 101049802-0102-CG101-0103

OVAL RD EAGLE ROCK AVE VE ELA UR LA 2/12/2026 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: 3/4/2026 Time: 18:13 User: tgreen Style Table: Langan.stb Layout: CG103 Document Code: 101049802-0102-CG101-0104

OVAL RD EAGLE ROCK AVE E AV EL UR LA 2/12/2026 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: 3/4/2026 Time: 18:14 User: tgreen Style Table: Langan.stb Layout: CG104 Document Code: 101049802-0102-CG101-0105

A B B A SECTION A-A SECTION B-B B DOWNSPOUT A A WYE FITTING 6" SCHEDULE 40 PVC WITH PVC BOOT ADAPTER DOWNSPOUT COVER PAINTED TO MATCH B 2" MAXIMUM SEE NOTE #1

#1 1% MINIMUM SLOPE SEE NOTE #2 45° BEND STORM SEWER PIPE (SIZE (SCH 40 PVC) VARIES) SEE GRADING PLAN FOR LOCATION INSTALL FLEXIBLE CONNECTION AFTER BEND

AFTER BEND NOTES: 1. FOR ALL DEPTHS OF COVER LESS THAN TWO (2) FEET, PIPE MUST BE SCHEDULE 40 PVC. FOR DEPTHS OF COVER GREATER THAN TWO (2) FEET, FLEXIBLE PIPE MAY BE USED. REFER TO SPECIFICATIONS FOR ALLOWABLE PIPE TYPES. 2. A WATERTIGHT CONNECTION SHALL BE MAINTAINED WITH ANY TRANSITION FROM SCHEDULE 40 PVC PIPE TO ANY OTHER PIPE TYPE. 3. THE DOWNSPOUT COLLECTOR DRAIN SHALL BE INSTALLED BEFORE THE