Stormwater Management Report Feb 2026 resubmissionrcd 2 26 2026

15 used (noun only; e.g., Very Gravelly VGR GRV ≥ 35% but < 60% gravel loam). Extremely Gravelly XGR GRX ≥ 60% but < 90% gravel Use adjective for Cobbly CB CB ≥ 15% but < 35% cobbles 15 to < 35 appropriate size; e.g., Very Cobbly VCB CBV ≥ 35% but < 60% cobbles gravelly. Extremely Cobbly XCB CBX ≥ 60% but < 90% cobbles Use “very” with the Stony ST ST ≥ 15% but < 35% stones 35 to < 60 appropriate size adjective; Very Stony VST STV ≥ 35% but < 60% stones e.g., very gravelly. Extremely Stony XST STX ≥ 60% but < 90% stones Use “extremely” with the Boudlery BY BY ≥ 15% but < 35% boulders 60 to < 90 appropriate size adjective; Very Bouldery VBY BYV ≥ 35% but < 60% boulders e.g., extremely gravelly. Extremely Bouldery XBY BYX ≥ 60% but < 90% boulders No adjective modifier. If ≤ Channery CN CN ≥ 15% but < 35% channers 10% fine earth, use the Very Channery VCN CNV ≥ 35% but < 60% channers appropriate noun for the ≥ 90 Extremely Channery XCN CNX ≥ 60% but < 90% channers dominant size class; e.g., Flaggy FL FL ≥ 15% but < 35% flagstones gravel. Use terms in lieu of Very Flaggy VFL FLV ≥ 35% but < 60% flagstones texture. Extremely Flaggy XFL FLX ≥ 60% but < 90% flagstones

SUBSURFACE EXPLORATION PROCEDURE: TEST PIT EXCAVATION A test pit is an excavation of subsurface materials to characterize the composition and rippability/excavation efforts. Test pit exploration allows observation of the boundary relationships within a soil and rock profile and is useful to identify existing fill composition, disturbed material or the depth of soft sediments. Both track mounted excavators and backhoes are used in a variety of ground conditions allowing for difficult terrain to be accessed. The excavation process also provides access for in-situ and field testing and acquisition of samples for laboratory testing. TEST PIT Procedure:  Involves excavation subsurface material to observe composition and physical characteristics  Recording the approximate depth of subsurface strata  Excavation is continued as prescribed or to limits of equipment and subsurface conditions  The exploration is typically carried out with an excavator or backhoe, with the depth dependent on machine size and ground

Soil Profile Report Project Name/#: Mavis #2296 - Additional Infiltration Testing Municipality: West Orange Project Location: 460 Prospect Avenue Block/Lot: Block: 105 Lot: 64.01 Driller: Sano Drilling Inspector: Maddie Trudnak / ECS Date of Observation: 1/14/2025 Lowest point in BMP (ft) = - Prepared by: JCY Maximum Impounded Water Depth (ft) = - Required Soil Profile Depth (ft) = 8.0 Exploration ID: TP-01 Elevation (ft) Existing Ground Level: 619.0 Elevations are approximate and based on Google Earth©. Proposed SWM Basin Bottom Level: - Seasonal High Water Table: - Termination: 611.0 Mark Most Top Elevation/Bottom Observed Water Table Soil Morphological USDA Soil Texture Hydraulically Elevation Elevation Note Observations Restrictive (ft.) (ft.) 10 YR 4/2 dark grayish Loamy Silt 619.0/618.5 brown, moist, blocky, Topsoil, contains roots friable

brown, moist, blocky, Topsoil, contains roots friable 7.5 YR 4/4 brown, Fill, contains metal nails, Silt Loam 618.5/617.0 moist, blocky, very plastic sprinkler system, friable roots 5 YR 3/3 dark reddish Infiltration Test at 615.0 SANDY LOAM x 617.0/611.0 Not encountered brown, moist, blocky, very friable, 10% gravel

Soil Profile Report Project Name/#: Mavis #2296 - Additional Infiltration Testing Municipality: West Orange Project Location: 460 Prospect Avenue Block/Lot: Block: 105 Lot: 64.01 Driller: Sano Drilling Inspector: Maddie Trudnak / ECS Date of Observation: 1/14/2025 Lowest point in BMP (ft) = - Prepared by: JCY Maximum Impounded Water Depth (ft) = - Required Soil Profile Depth (ft) = 8.0 Exploration ID: TP-02 Elevation (ft) Existing Ground Level: 619.0 Elevations are approximate and based on Google Earth©. Proposed SWM Basin Bottom Level: - Seasonal High Water Table: - Termination: 611.0 Mark Most Top Elevation/Bottom Observed Water Table Soil Morphological USDA Soil Texture Hydraulically Elevation Elevation Note Observations Restrictive (ft.) (ft.) 10 YR 4/2 dark grayish Silt Loam 619.0/618.75 brown, moist, blocky, Topsoil, Fill hard

oist, blocky, Topsoil, Fill hard 7.5 YR 4/4 brown, Loamy Silt x 618.75/615.75 moist, blocky, very Fill, contains brick friable 5 YR 3/3 dark reddish Infiltration Test SANDY LOAM 615.75/611.0 Not encountered brown, moist, single at 615.0 grain, loose, 10% gravel

Soil Profile Report Project Name/#: Mavis #2296 - Additional Infiltration Testing Municipality: West Orange Project Location: 460 Prospect Avenue Block/Lot: Block: 105 Lot: 64.01 Driller: Sano Drilling Inspector: Maddie Trudnak / ECS Date of Observation: 1/14/2025 Lowest point in BMP (ft) = - Prepared by: JCY Maximum Impounded Water Depth (ft) = - Required Soil Profile Depth (ft) = 8.5 Exploration ID: TP-03 Elevation (ft) Existing Ground Level: 619.0 Elevations are approximate and based on Google Earth©. Proposed SWM Basin Bottom Level: - Seasonal High Water Table: - Termination: 610.5 Mark Most Top Elevation/Bottom Observed Water Table Soil Morphological USDA Soil Texture Hydraulically Elevation Elevation Note Observations Restrictive (ft.) (ft.) 10 YR 4/2 dark grayish Loamy Silt 619.0/618.5 brown, moist, blocky, Topsoil, contains roots loose

, moist, blocky, Topsoil, contains roots loose 10 YR 3/2 very dark grayish brown, moist, Fill, plastic sprinkler Silt Loam x 618.5/616.0 blocky, friable, 10% system gravel 5 YR 3/3 dark reddish brown, moist, single Sandy Silt 616.0/610.5 Not encountered Bucket refusal @ 8.5' bgs grain & blocky, loose, 50% gravel

Soil Profile Report Project Name/#: Mavis #2296 - Additional Infiltration Testing Municipality: West Orange Project Location: 460 Prospect Avenue Block/Lot: Block: 105 Lot: 64.01 Driller: Sano Drilling Inspector: Maddie Trudnak / ECS Date of Observation: 1/14/2025 Lowest point in BMP (ft) = - Prepared by: JCY Maximum Impounded Water Depth (ft) = - Required Soil Profile Depth (ft) = 12.0 Exploration ID: TP-04 Elevation (ft) Existing Ground Level: 618.0 Elevations are approximate and based on Google Earth©. Proposed SWM Basin Bottom Level: - Seasonal High Water Table: - Termination: 606.0 Mark Most Top Elevation/Bottom Observed Water Table Soil Morphological USDA Soil Texture Hydraulically Elevation Elevation Note Observations Restrictive (ft.) (ft.) 10 YR 3/2 very dark Silt Loam 618.0/617.7 grayish brown, moist, Topsoil blocky, loose

, moist, Topsoil blocky, loose 7.5 YR 5/4 brown, Sandy Loam 617.7/617.4 moist, blocky, loose, 5% Fill gravel 2.5Y 5/1 gray, moist, Fill, contains glass Silty Loam 617.4/617.0 blocky, loose, 90% bottles gravel 7.5 YR 3/1 very dark Clay Loam x 617.0/615.0 gray, moist, blocky, friable, 20% gravel 5 YR 3/3 dark reddish Sandy Silt 615.0/606.0 Not encountered brown, moist, single grain, loose, 40% gravel