Report 4 13 2026

​ENSURPLAN, INC.​ ​ ww.Ensurplan.​​net​ w ​ ivil Engineers & Land Surveyors C Ph: (732) 469-0400​ ​Certificate of Authorization 24GA27997700​ ​STORMWATER DRAINAGE REPORT​ ​04/13/26​ ​Minor Subdivision 15 Ridgeway Ave West Orange, NJ​ ​Infiltration Mounding Analysis One​ ​14​ ​Mailing Address: Post Office Box 4304, Warren, NJ 07059​

​ENSURPLAN, INC.​ ​ ww.Ensurplan.​​net​ w ​ ivil Engineers & Land Surveyors C Ph: (732) 469-0400​ ​Certificate of Authorization 24GA27997700​ ​STORMWATER DRAINAGE REPORT​ ​04/13/26​ ​Minor Subdivision 15 Ridgeway Ave West Orange, NJ​ ​Infiltration Mounding Analysis Two​ ​15​ ​Mailing Address: Post Office Box 4304, Warren, NJ 07059​

DEPTH 0-31" 31"-68" 68-144" DEPTH 0-13" 31"-68" 68"-130" LOGGED BY:VINCENT CREEVY Block 158, Proposed Lot 28.04 West Orange SOIL LOG -3-Dry Well-03/20/2026 SOIL DESCRIPTION 7.5YR 4/4 Brown, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic **xeee***NC) MOTTLES OR WATER OBSERVED 7.5YR 6/6 Redish yellow, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic “eeeNOQ MOTTLES OR WATER OBSERVED 7.5YR 5/4 Brown siltloam (SAMPLE @ 73") 15% Gravel-25% Cobble-3" to 8" 110" -144" slightly moist, subangular blocky, friable, plastic “““*“MOTTLES OBSERVED 10YR 5/6 @ 95"(few, medium, distinct) SEASONAL HIGH WATER “ene WATER SEEPAGE OBSERVED @ 105" LOGGED BY:VINCENT CREEVY,Block 158, Proposed Lot 28.03 West Orange SOIL LOG -1-Dry Well-03/20/2026 SOIL DESCRIPTION 7.5YR 3/3 Dark brown, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic **«***4NC) MOTTLES OR WATER OBSERVED 7.5YR 6/4 light brown, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic *eexx***NIC) MOTTLES OR WATER OBSERVED 7.5YR 5/4 Brown siltloam (SAMPLE @ 73") 15% Gravel-25% Cobble-3" to 10" 108" -130" moist, subangular blocky, friable, plastic “<*""*MOTTLES OBSERVED 10YR 5/6 @ 68"(few, medium, distinct) SEASONAL HIGH WATER ween" WATER SEEPAGE OBSERVED @ 70"

LOGGED BY:VINCENT CREEVY Block 158, Proposed Lot 28.04 West Orange DEPTH SOIL LOG -2-Dry Well-03/20/2026 SOIL DESCRIPTION 0-44" —_7.5YR 4/4 Brown, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic *xxe**4NIC) MOTTLES OR WATER OBSERVED 44"69" _7.5YR 6/6 Redish yellow, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic *“*“MOTTLES OBSERVED 10YR 5/6 @ 60"(few, medium, distinct) SEASONAL HIGH WATER “tex ATER SEEPAGE OBSERVED @ 65" 69"-144" 7.5YR 5/4 Brown siltloam (SAMPLE @ 75") 15% Gravel-10% Cobble-3" to 8" 101" -144" moist, subangular blocky, friable, plastic *eeeee.V ET THROUGH OUT LOGGED BY:VINCENT CREEVY Block 158, Proposed Lot 28.03 West Orange DEPTH SOIL LOG -4-Dry Well-03/20/2026 SOIL DESCRIPTION 0-65" _7.5YR 4/4 Brown, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic “NO MOTTLES OR WATER OBSERVED 65"-75" __7.5YR 6/6 Redish yellow, siltloam slightly moist, subangular blocky, friable, slightly plastic to plastic “*«****MIOTTLES OBSERVED 10YR 5/6 @74"(few, medium, distinct) SEASONAL HIGH WATER 75"-144" 7.5YR 5/4 Brown siltloam (SAMPLE @ 80") 15% Gravel-25% Cobble-3" to 8" 105" -144" moist, subangular blocky, friable, plastic aueee***WATER SEEPAGE OBSERVED @ 76"

Form 3b. Tube Permeameter Test Data: Bik. 158, Prop. Lot 28.03 W. Orange (Dry Well) 1. Test Number__Log -4_ Replicate (letter) _B Date Collected 03/20/2025 2. Material Tested: Test in Native Soil — Indicate Depth_80” 3. Type of Sample:__X__ Undisturbed Disturbed 4. Sample Dimensions: Inside Radius of Sample Tube, R, in inches _ 1.88” Length of Sample, L, in inches. 3.77 5. Bulk Density Determination: 6. Standpipe used: No Xx Yes Indicate Internal Radius, 0.44” 7. Height of Water Level Above Rim of Test Basin, in inches: At the Beginning of Each Test Interval, H;__7.0” At the End of Each Test Interval, H2__6.0” 8. Rate of Water Level Drop: ***STOPWATCH USED Length of Test Interval, T in Minutes (decimal) 5.62min./inch 5.64min./inch 5.65min finch 9. Calculation of Permeability: K, (in/nr) = 60 min/hr x 7/R? x L(in)/T(min) x In(Hy/H2) = (60 min/hr x 0.194/3.534) x__ 3.7" /__ 5.63 x In (7.0/6.0 ) = _0.33 in/hr = K-1 10. Defects in the Sample: None 11. | hereby certify that the information farnishad on Form 3B of this application is true of data is a violation of the Water Pollution Control Act (N.J.S.A. 58:10A-1 et[seq. )fand is}subject to penalties as prescribed in N.J.A.C. : 7:14-8. Signature of Soil Evaluator Date __ 03/21/2026 Vincent Cr Signature of Professional Engineer Date __ 03/21/2026 -E., License No. 44863

Form 3b. Tube Permeameter Test Data: Blk. 158, Prop. Lot 28.03 W. Orange (Dry Well) 1. Test Number__Log -4_ Replicate (letter) A Date Collected 03/20/2025 2. Material Tested: Test in Native Soil — Indicate Depth_80” 3. Type of Sample:__X__ Undisturbed Disturbed 4. Sample Dimensions: Inside Radius of Sample Tube, R, in inches _ 1.88” Length of Sample, L, in inches 3.5” 5. Bulk Density Determination: 6. Standpipe used: No Xx Yes Indicate Internal Radius, __ 0.44” 7. Height of Water Level Above Rim of Test Basin, in inches: At the Beginning of Each Test Interval, H;__7.0” At the End of Each Test Interval, H,__ 6.0” 8. Rate of Water Level Drop: *““"*S TOPWATCH USED Length of Test Interval, T in Minutes (decimal) 5.60min./inch 5.62min./inch 5.62min./inch 5.63min./inch 5.63min./inch 5.63min./inch 9. Calculation of Permeability: K, (in/hr) = 60 min/hr x 7/R? x L(in)/T(min) x In(Hy/H2) = (60 min/hr x 0.194/3.534) x__ 3.5" /__ 5.63 x In (7.0/6.0 ) = _0.32 in/hr = K-1 10. Defects in the Sample: None Control Act (N.J.S.A. 58:10A-1 et sex NJAC. : 7:14-8. Signature of Soil Evaluator Lox Date _ 03/21/2026 -E., License No. 44863 Signature of Professional Engineer William S. Scott,

Form 3b. Tube Permeameter Test Data: Bik. 158, Prop. Lot 28.03 W. Orange (Dry Well) 1. Test Number__Log -4 Replicate (letter) A Date Collected___ 03/20/2025 2. Material Tested: Test in Native Soil — Indicate Depth_80” 3. Type of Sample: __X Undisturbed Disturbed 4. Sample Dimensions: Inside Radius of Sample Tube, R, in inches _ 1.88” Length of Sample, L, in inches 3.5” 5. Bulk Density Determination: 6. Standpipe used: No X___ Yes Indicate Internal Radius, 0.44” 7. Height of Water Level Above Rim of Test Basin, in inches: At the Beginning of Each Test Interval, H, _7.0” At the End of Each Test Interval, H» 6.0" 8. Rate of Water Level Drop: “STOPWATCH USED Length of Test Interval, T in Minutes (decimal) 5.60min./inch 5.62min./inch 5.62min./inch 5.63min./inch 5.63min./inch 5.63min./inch 9. Calculation of Permeability: K, (in/hr) = 60 min/hr x r/R? x L(in)/T(min) x In(H,/H2) = (60 min/hr x 0.194/3.534) x__3.5" /__5.63 x In (7.0/6.0 ) = _0.32_in/hr = K-1 10. Defects in the Sample: None 11. | hereby certify that the informatior| furnighed on Form 3B of this application is true and accurate. | am aware that falsification of data i a violation of the Water Pollution Control Act (N.J.S.A. 58:10A-1 et se ) and is sulject to penalties as prescribed in NJAC. : 7:14-8. Signature of Soil Evaluator WA Date __ 03/21/2026 Vincent Cree Signature of Professional Engineer Date __03/21/2026 William S. Scott, PZ, License No. 44863

Form 3b. Tube Permeameter Test Data: Bik. 158, Prop. Lot 28.03 W. Orange (Dry Well) 1. Test Number__Log -3_ Replicate (letter) _B Date Collected 03/20/2025 2. Material Tested: Test in Native Soil — Indicate Depth_73” 3. Type of Sample: _X Undisturbed Disturbed 4. Sample Dimensions: Inside Radius of Sample Tube, R, in inches _ 1.88” Length of Sample, L, in inches 3.4” 5. Bulk Density Determination: 6. Standpipe used: No Xx Yes Indicate Internal Radius, 0.44” 7. Height of Water Level Above Rim of Test Basin, in inches: At the Beginning of Each Test Interval, H;__7.0” At the End of Each Test Interval, H2__6.0” 8. Rate of Water Level Drop: *““*STOPWATCH USED Length of Test Interval, T in Minutes (decimal) 2.47min./inch 2.48min./inch 2.49min./inch 2.49min./inch 9. Calculation of Permeability: K, (in/hr) = 60 min/hr x r/R? x L(in)/T(min) x In(Hy/He) = (60 min/hr x 0.194/3.534) x__3.4” /__2.49 x In (7.0/6.0 ) = _0.69 in/hr = K-1 10. Defects in the Sample: None 11. | hereby certify that the information furnjshed on Form 3B of this application is true and accurate. | am aware that falsificetion df datas a violation of the Water Pollution Control Act (N.J.S.A. 58:10A-1 et sed. ) and is sipbject to penalties as prescribed in N.J.A.C. : 7:14-8. W Vincent Cree Signature of Soil Evaluator Z. Date 03/21/2026 Signature of Professional Engineer William S. Scott, P.E. £Zicense No. 44863

Form 3b. Tube Permeameter Test Data: Bik. 158, Prop. Lot 28.03 W. Orange (Dry Well) 1. Test Number__Log -3_ Replicate (letter)__A__ Date Collected 03/20/2025 2. Material Tested: Test in Native Soil — Indicate Depth_73” 3. Type of Sample:___X___ Undisturbed Disturbed 4. Sample Dimensions: Inside Radius of Sample Tube, R, in inches _ 1.88” Length of Sample, L, in inches 3.5” 5. Bulk Density Determination: 6. Standpipe used: No Xx Yes Indicate Internal Radius, _0.44” 7. Height of Water Level Above Rim of Test Basin, in inches: At the Beginning of Each Test Interval, H,__7.0” At the End of Each Test Interval, H__6.0” 8. Rate of Water Level Drop: *****STOPWATCH USED Length of Test Interval, T in Minutes (decimal) 2.62min./inch 2.63min./inch 2.63min./inch 2.65min./inch 2.65min./inch 2.65min./inch 9. Calculation of Permeability: K, (in/hr) = 60 min/hr x P/R? x L(in)/T (min) x In(H,/H,) = (60 min/hr x 0.194/3.534) x__3.5" /__ 2.65 x In (7.0/6.0 ) =_0.67_in/hr = K-1 10. Defects in the Sample: None 11. | hereby certify that the informatin furnished on Form 3B of this application is true and accurate. | am aware that falsifiqation] of data is a violation of the Water Pollution Control Act (N.J.S.A. 58:10A-1 et sq. ) dnd is| subject to penalties as prescribed in Signature of Soil Evaluator L L Date __03/21/2026 Vincent ~X, | Signature of Professional Engineer we Date __ 03/21/2026 William S. Scott, PE., License No. 44863

Form 3b. Tube Permeameter Test Data: Blk. 158, Prop. Lot 28.04 W. Orange (Dry Well) 1. Test Number__Log -2_ Replicate (letter) B Date Collected 03/20/2025 2. Material Tested: Test in Native Soil — Indicate Depth_75” 3. Type of Sample:__X___ Undisturbed Disturbed 4. Sample Dimensions: Inside Radius of Sample Tube, R, in inches _ 1.88” Length of Sample, L, in inches. 3.6" 5. Bulk Density Determination: 6. Standpipe used: No X Yes Indicate Internal Radius, 0.44” 7. Height of Water Level Above Rim of Test Basin, in inches: At the Beginning of Each Test Interval, H;__7.0” At the End of Each Test Interval, H__6.0” 8. Rate of Water Level Drop: *“**STOPWATCH USED Length of Test Interval, T in Minutes (decimal) 4.14min./inch 4.15min./inch 9. Calculation of Permeability: K, (in/hr) = 60 min/hr x PR? x L(in)/T(min) x In(Hy/Hp) = (60 min/hr x 0.194/3.534) x__3.6"/ 4.15 x In (7.0/6.0 ) = _0.44 in/hr = K-1 10. Defects in the Sample: None 11. | hereby certify that the informatipn furfishedgon Form 3B of this application is true and accurate. | am aware that falsififation|of datd is a violation of the Water Pollution Control Act (N.J.S.A. 58:10A-1 et sbq. ) ahd is ibject to penalties as prescribed in N.J.A.C. : 7:14-8. {Date 03/21/2026 ME fam 03/21/2026 William S. Scott, PZ License No. 44863 Signature of Soil Evaluator Vincent Cre Signature of Professional Engineer