2025 06 18 WEH Slope Stability Analysis Letter Report

NTP-3 Log of Test Pit Project 1 of 1 Date West Essex Highlands Location 101049801 4/10/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 593.0 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 5.0 ft Excavation Foreman +593.0 Roy Westervelt Depth Scale Type DESCRIPTION - Field Engineer Bhumi Peer SAMPLE Number Elev. (ft) Water Level - Completion - CAT Excavator 308 SYMBOL Sheet Project No. REMARKS Topsoil (Approx. 8") [TOPSOIL] 0 Began excavating 4/10/2025 at 10:55 AM. Brown fine to coarse SAND, some silt, some gravel with cobbles and roots (moist) [SM] 1 Roots greater than 1" in diameter extend to 1 ft bgs. Roots 1/2" to 1" in diameter extend to 1.5 ft bgs. +592.3 2 Roots less than 1/2" in diameter extend to 2 ft bgs. Orangish brown Clayey fine to coarse SAND, some gravel (moist) [SC] +588.0 End of Test Pit at 5.0ft. 4 5 GRAB GRAB +589.0 G-2 G-1 3 Hard excavating starting at 4 ft bgs. Excavator bucket refusal at 5 ft bgs. No water seepage or mottling observed in test pit. 6 End of test pit 4/10/2025 at 11:10 AM. Test pit backfilled with excavated material and area leveled. 7 Top of Rock Encountered at 5 ft. 8 9 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:48

NTP-4 Log of Test Pit Project 1 of Date West Essex Highlands Location 101049801 4/9/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 538.0 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 8.0 ft Excavation Foreman +538.0 Roy Westervelt Depth Scale Topsoil (Approx. 8") [TOPSOIL] 0 Brown fine to coarse SAND, some gravel, trace silt, trace clay with roots (moist) [SM] 1 Type DESCRIPTION - Field Engineer Bhumi Peer SAMPLE Number Elev. (ft) Water Level - Completion - Hitachi Excavator 7X85 SYMBOL Sheet Project No. REMARKS Began excavating 4/09/2025 at 1:10 PM. Roots greater than 1" in diameter extend to 6" bgs. +537.3 Roots 1/2" to 1" in diameter extend to 1 ft bgs. GRAB G-1 2 3 Roots less than 1/2" in diameter extend to 2 ft bgs. Boulder with 1 ft diameter encountered at 3 ft. 4 5 6 GRAB Boulders with greater than 1.5 ft diameter encountered 6 ft bgs. G-2 Brown Silty fine to coarse SAND, trace gravel, trace clay with cobbles and boulders (moist) [SM] 7 +530.0 End of Test Pit at 8.0ft. 8 No water seepage or mottling observed in test pit. 9 End of test pit 4/09/2025 at 1:40 PM. Test pit backfilled with excavated material and area leveled. Top of Rock not Encountered. 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:48 1

NTP-5 Log of Test Pit Project 1 of Date West Essex Highlands Location 101049801 4/9/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 559.0 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 11.0 ft +559.0 +558.7 Topsoil (Approx. 4") [TOPSOIL] Brown fine to coarse SAND, some silt, some gravel with cobbles and boulders and trace roots (moist) [SM] Roy Westervelt Depth Scale Type DESCRIPTION - Field Engineer Bhumi Peer SAMPLE Number Elev. (ft) Water Level - Completion - Excavation Foreman Hitachi Excavator 7X85 SYMBOL Sheet Project No. REMARKS 0 Began excavating 4/09/2025 at 2:20 PM. 1 Roots greater than 1/2" in diameter extend to 1 ft bgs. 2 Roots less than 1/2" in diameter extend to 1.5 ft bgs. Boulder with 1.5 ft diameter encountered 2 ft bgs. 3 4 5 6 GRAB 7 G-1 Brown Gravelly fine to coarse SAND, some silt with cobbles (moist) [SM] 8 9 10 +548.0 End of Test Pit at 11.0ft. 11 No water seepage or mottling observed in test pit. 12 End of test pit 4/09/2025 at 2:50 PM. Test pit backfilled with excavated material and area leveled. Top of Rock not Encountered. 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:48 1

APPENDIX C LOGS OF LANGAN OUTCROP TEST PITS LANGAN

R-1A Log of Test Pit Project 1 of 1 Date West Essex Highlands Location 101049801 4/9/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 598.0 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 4.0 ft Excavation Foreman +598.0 Topsoil (Approx. 15") [TOPSOIL] Roy Westervelt Depth Scale Type DESCRIPTION - Field Engineer Bhumi Peer SAMPLE Number 0 REMARKS Began excavating 4/09/2025 at 9:17 AM. 1 +596.8 Roots greater than 1/2" in diameter extend to 2 ft bgs. Roots less than 1/2" in diameter extend to 2.5 ft bgs. 2 G-1 Brown Silty fine to coarse SAND, some gravel with cobbles (moist) [SM] +594.0 End of Test Pit at 4.0ft. GRAB Elev. (ft) Water Level - Completion - Hitachi Excavator 7X85 SYMBOL Sheet Project No. 3 Possible bottom of boulder at 3 ft. 4 Hit obstruction at 4 ft and excavator bucket refusal at 4 ft. No water seepage or mottling observed in test pit. 5 End of test pit 4/09/2025 at 9:45 AM. Test pit backfilled with excavated material and area leveled. 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:49

R-1B Log of Test Pit Project 1 of Date West Essex Highlands Location 101049801 4/9/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 601.0 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 2.0 ft Excavation Foreman Topsoil (Approx. 12") [TOPSOIL] +600.0 Brown Silty fine to coarse SAND, some gravel with cobbles and root hairs (moist) [SM] +599.0 End of Test Pit at 2.0ft. Bhumi Peer REMARKS Type Depth Scale 0 Began excavating 4/09/2025 at 9:50 AM. 1 Roots extend to 2 ft bgs. GRAB +601.0 Roy Westervelt Number DESCRIPTION - Field Engineer SAMPLE G-1 Elev. (ft) Water Level - Completion 2.0 Hitachi Excavator 7X85 SYMBOL Sheet Project No. 2 Very slow water seepage at 2 ft. No mottling. Excavator bucket refusal at 2 ft. 3 End of test pit 4/09/2025 at 10:04 AM. Test pit backfilled with excavated material and area leveled. 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:49 Top of Rock Encountered at 2 ft. 1

R-2 Log of Test Pit Project 1 of Date West Essex Highlands Location 101049801 4/9/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 585.5 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 6.0 ft Excavation Foreman +585.5 Topsoil (Approx. 12") [TOPSOIL] +584.5 Brown Silty fine to coarse SAND, some gravel with trace roots (moist) [SM] Roy Westervelt Depth Scale Type DESCRIPTION - Field Engineer Bhumi Peer SAMPLE Number Elev. (ft) Water Level - Completion - Hitachi Excavator 7X85 SYMBOL Sheet Project No. REMARKS 0 Began excavating 4/09/2025 at 10:10 AM. 1 Roots greater than 1/2" in diameter extend to 1.5 ft bgs. 2 Roots less than 1/2" in diameter extend to 2.5 ft bgs. 3 4 5 +579.5 End of Test Pit at 6.0ft. GRAB G-1 Boulder with diameter of 1 ft encountered at 5 ft bgs. 6 Obstruction at 6 ft bgs and excavator bucket refusal. No water seepage or mottling observed in test pit. 7 End of test pit 4/09/2025 at 10:25 AM. Test pit backfilled with excavated material and area leveled. 8 9 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:49 1

R-3 Log of Test Pit Project 1 of Date West Essex Highlands Location 101049801 4/9/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 553.5 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 9.0 ft Excavation Foreman Brown Silty fine to coarse SAND, trace gravel with cobbles and boulders and roots (moist) [SM] Type REMARKS Began excavating 4/09/2025 at 10:45 AM. 1 Roots greater than 1/2" in diameter extend 1 ft bgs. 2 Roots less than 1/2" in diameter extend 2 ft bgs. Boulder with diameter of 1 ft encountered at 1.5 ft bgs. GRAB +552.5 Bhumi Peer 0 GRAB Topsoil (Approx. 12") [TOPSOIL] Depth Scale Number +553.5 Roy Westervelt G-1 DESCRIPTION - Field Engineer SAMPLE G-2 Elev. (ft) Water Level - Completion - Hitachi Excavator 7X85 SYMBOL Sheet Project No. 3 4 5 Brown Silty fine to coarse SAND, some gravel with cobbles (moist) [SM] +546.5 POSSIBLE DECOMPOSED ROCK 6 7 Hard digging from 7 ft. 8 +544.5 End of Test Pit at 9.0ft. 9 No water seepage or mottling observed in test pit. 10 End of test pit 4/09/2025 at 11:10 AM. Test pit backfilled with excavated material and area leveled. 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:50 1

R-4A Log of Test Pit Project 1 of Date West Essex Highlands Location 101049801 4/10/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 570.0 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First 7.0 ft Excavation Foreman Bhumi Peer REMARKS Topsoil (Approx. 6") [TOPSOIL] 0 Began excavating 4/10/2025 at 7:38 AM. Brown fine to coarse SAND, some silt, some gravel with cobbles and roots (moist) [SM] 1 Roots greater than 1/2" in diameter extend to 1 ft bgs. 2 Roots less than 1/2" in diameter extend to 2 ft bgs. 3 Boulder with diameter of 1 ft encountered at 3 ft bgs. Brown Gravelly fine to coarse SAND, some silt with cobbles and boulders (moist) [SM] 4 GRAB +569.5 Depth Scale Type +570.0 Roy Westervelt Number DESCRIPTION - Field Engineer SAMPLE G-1 Elev. (ft) Water Level - Completion - CAT Excavator 308 SYMBOL Sheet Project No. 5 6 Rock fragments encountered at 6 ft bgs. G-2 DECOMPOSED ROCK +563.0 End of Test Pit at 7.0ft. GRAB +564.0 7 Excavator bucket refusal at 7 ft. No water seepage or mottling observed in test pit. 8 End of test pit 4/10/2025 at 8:00 AM. Test pit backfilled with excavated material and area leveled. 9 Top of Rock Encountered at 7 ft. 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:50 1

R-4B Log of Test Pit Project 1 of 1 Date West Essex Highlands Location 101049801 4/10/2025 Elevation and Datum West Orange, New Jersey Excavation Company Approx. el. 577.5 (NAVD 88) Depth Frank Semeraro Construction Excavation Equipment Water Level - First - Excavation Foreman +577.5 Roy Westervelt Depth Scale Topsoil (Approx. 8") [TOPSOIL] 0 Brown fine to coarse SAND, some gravel, some silt with cobbles and boulders and roots (moist) [SM] 1 Type DESCRIPTION - Field Engineer Bhumi Peer SAMPLE Number Elev. (ft) Water Level - Completion 6.5 ft CAT Excavator 308 SYMBOL Sheet Project No. REMARKS Began excavating 4/10/2025 at 8:26 AM. Large boulder at 6" bgs (3 ft diameter). +576.8 Roots greater than 1" in diameter extend to 6" bgs. 2 Roots between 1/2" to 1" in diameter extend to 1 ft bgs. 3 Roots less than 1/2" in diameter extend to 3 ft bgs. GRAB G-1 Brown Gravelly fine to coarse SAND, some silt with cobbles and boulders (moist) [SM] 4 +571.0 DECOMPOSED ROCK End of Test Pit at 6.5ft. 6 GRAB +571.5 G-2 5 7 8 Rock fragments at 6 ft bgs. Excavator bucket refusal at 6.5 ft. No water seepage or mottling observed in test pit. End of test pit 4/10/2025 at 8:47 AM. Test pit backfilled with excavated material and area leveled. Top of Rock Encountered at 6.5 ft. 9 10 11 12 13 14 15 16 17 18 19 20 Langan Cloud Database, Project : 101049801, West Essex Highlands. Produced at 06/17/2025 21:23:50