15 2026 02 12 Crestmont CC Preliminary and Final Site Plans

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 SUPPORT RIBS 24"

NJ Certificate of Authorization No. 24GA27996400 SUPPORT RIBS 24" NOTES: ENGINEERING PROPERTIES: 1. COMPRESSIVE STRENGTH OF TT24 PAVER: EMPTY PAVER: ULTIMATE LOAD = 86,563 LBS / 601 PSI FILLED PAVER: ULTIMATE LOAD = 400,000 LBS 2. POROSITY OF AASHTO #57 AGGREGATE = 0.4 TOP SOIL FILL: 24" 3. NDS RECOMMENDS NATIVE TOP SOIL FOR BACKFILL INSIDE THE PAVERS. 4. EXTEND TOP SOIL INSIDE PAVER AN ADDITIONAL ¼ TO ½ INCH ABOVE PAVER SURFACE AND MATCH SURROUNDING GRADE. PROPOSED FINISHED GRADE SLOPE PER PROJECT GRADING PLAN. PROTECT PAVER AREA UNTIL GRASS IS SUFFICIENTLY ESTABLISHED TO HANDLE TRAFFIC. PROVIDE 1" (MIN.) CLEARANCE BETWEEN ANY CONCRETE EDGE AND PAVER.

TRAFFIC. PROVIDE 1" (MIN.) CLEARANCE BETWEEN ANY CONCRETE EDGE AND PAVER. 5. GRASS PAVERS ARE TO BE USED FOR AREAS OF PEDESTRIAN USE AND OCCASIONAL VEHICULAR TRAFFIC USE (E.G., OVERFLOW PARKING AND EMERGENCY VEHICLE/FIRE LANES). AASHTO #57 BASE ROCK: SNAP LATCHING SYSTEM 6. GRADATION OF AASHTO #57 COARSE BASE ROCK: 100% PASSING 1 ½” SCREEN, 95-100% PASSING 1”, 25-60% PASSING ½”, AND 0-10% PASSING #8 SCREEN. OPTIONAL: ADD PULVERIZED NATIVE TOP SOIL EQUAL TO 15% OF TOTAL VOLUME. BLEND TO OBTAIN HOMOGENEOUS MIXTURE PRIOR TO PLAN VIEW 7. PLACEMENT. THICKNESS OF AGGREGATE LAYER IS AS FOLLOWS: NO BASE REQUIRED FOR EROSION CONTROL AND PEDESTRIAN-ONLY LOADS PRODUCT DESCRIPTION (COMPACTION OF NATIVE SOIL RECOMMENDED FOR SLOPES UP TO 3%); 4 INCHES FOR LIGHT LOADS (GOLF CARTS); 6 INCHES FOR MEDIUM

(COMPACTION OF NATIVE SOIL RECOMMENDED FOR SLOPES UP TO 3%); 4 INCHES FOR LIGHT LOADS (GOLF CARTS); 6 INCHES FOR MEDIUM PANEL SIZE: 24" X 24" X 1 1/2" LOADS (CARS AND PICKUP TRUCKS); 8 INCHES FOR HEAVY LOADS (FIRE TRUCKS). DOMED CELLS PER PANEL: (120) 2-1/2" HEXAGONAL CELLS 8. COMPACT WITH ONE TO THREE PASSES OF 5-TON STEEL WHEEL ROLLER. SINCE IT IS DIFFICULT TO MEASURE DENSITY OF COARSE REFLECTIVE AGGREGATE, APPROACH OF REQUIRING A FIXED DENSITY IS NOT APPLICABLE. DELINEATOR (OPTIONAL) SOD PLANTING LEVEL FILTER FABRIC (OPTIONAL): 6" X 6" CONC. EDGING 9. FILTER FABRIC MAY BE USED TO PREVENT MIGRATION OF FINES FROM SURROUNDING NATIVE SOILS INTO COARSE AGGREGATE LAYER. (OPTIONAL) TUFFTRACK PAVER THE FABRIC PREVENTS CLOGGING OF AGGREGATE LAYER AND EXTENDS ITS USEFUL LIFE. USE OF FILTER FABRIC IS STRONGLY REINFORCING AS REQUIRED 1" MIN. CLEARANCE PROPOSED FINISHED GRADE RECOMMENDED AROUND EDGE DRAIN. (OPTIONAL) 10. NDS RECOMMENDS NON-WOVEN NEEDLE-PUNCHED GEOTEXTILE. WOVEN GEOTEXTILES SHOULD NOT BE USED. SEED PLANTING LEVEL EXISTING

SEED PLANTING LEVEL EXISTING 1/4" to 1/2" 11. USE FILTER FABRIC WITH AOS <0.60 MM FOR NATIVE SOILS WITH 50% OR LESS PARTICLES BY WEIGHT PASSING NO.200 SIEVE. USE FILTER EXISTING GRADE GRADE FABRIC WITH AOS <0.30MM FOR NATIVE SOILS WITH 50% OR GREATER PARTICLES BY WEIGHT PASSING THE NO.200 SIEVE. UNDERDRAIN: 1.5" 12. NDS RECOMMENDS UNDERDRAIN TO COLLECT PERCOLATED WATER AND CONVEY TO PROJECT STORMWATER FACILITY FOR NATIVE SOIL TOP SOIL INFILL THAT IS NRCS HYDROLOGIC SOIL GROUP C OR D (LOW INFILTRATION RATES). UNDERDRAIN IS OPTIONAL FOR SOIL GROUP B (MODERATE INFILTRATION) AND CAN BE ELIMINATED FOR SOIL GROUP A (GOOD INFILTRATION). 13. USE MINIMUM 4-INCH DIA PERFORATED PVC OR POLYETHYLENE PIPE AT 250-FT CENTERS; MINIMUM ONE PIPE. PIPE TO BE INSTALLED AT NATIVE SOILS MINIMUM 0.5% SLOPE. RECOMMENDED

NATIVE SOILS MINIMUM 0.5% SLOPE. RECOMMENDED 2 SQ. INCHES OF OPENING / LINEAR FOOT. FILTER FABRIC (OPTIONAL) 0" TO 10" 0" TO 8" 0" TO 8" 14. UNDERDRAIN TO DAYLIGHT INTO PROJECT STORMWATER FACILITY (CATCH BASIN / OPEN CHANNEL / BASIN). 15. INVERT OF PIPE RECOMMENDED TO BE ABOVE PROJECT HIGH WATER LEVEL TO PREVENT BACKING-UP OF WATER INTO PAVER SYSTEM. NATIVE SOIL SURFACE AASHTO #57 BASE ROCK 16. UNDERDRAIN TO BE SURROUNDED BY 4” OF AASHTO #57 COARSE AGGREGATE, WITH MIN. 2" BEDDING. 2" WITH OPTIONAL FILTER OR APPROVED EQUAL FABRIC IF UNDERDRAIN IS WITH OPTIONAL TOP NOT USED SOIL BLEND SUBGRADE NATIVE SOIL: 8" NATIVE SOILS 17. COMPACT SUBGRADE NATIVE SOILS 90 TO 95% STANDARD PROCTOR DENSITY PER ASTM D696 FOR SOILS WITH CALIFORNIA BEARING RATIO 3' (MIN.) >20%, R VALUE >30, AASHTO A-1, A-2, AND A-3 SOILS. LOWER COMPACTION LEVELS PROMOTE INFILTRATION THROUGH SOIL. 12" FILTER FABRIC (OPTIONAL) 18. NDS RECOMMENDS THAT ENGINEER-OF-RECORD CONSIDER HIGHER LEVEL OF COMPACTION FOR CBR 5 TO 20%, R-VALUE 10 TO 30,

18. NDS RECOMMENDS THAT ENGINEER-OF-RECORD CONSIDER HIGHER LEVEL OF COMPACTION FOR CBR 5 TO 20%, R-VALUE 10 TO 30, SEASONAL AASHTO A-4 SOILS FOR HEAVY LOADS WHERE INFILTRATION INTO NATIVE SOILS IS NOT A REQUIREMENT. 4" DIA UNDERDRAIN HIGH WATER 19. NDS RECOMMENDS THAT ENGINEER-OF-RECORD CONSULT WITH PROJECT GEOTECHNICAL ENGINEER FOR POTENTIAL SOIL MODIFICATION (SEE NOTES SHEET 2) TABLE (E.G., LIME TREATMENT) AND COMPACTION LEVEL FOR CBR <5% AND R-VALUE <10, AASHTO A-5, A-6, AND A-7 SOILS. SECTION VIEW © 2024 Langan Date: 3/4/2026 Time: 18:05 User: tgreen Style Table: Langan.stb Layout: CS501 Document Code: 101049802-0102-CS501-0101