1240815StormWaterManagementReportrcd 3 12 2026

0 90 100 -0.500 Disclaimer This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater mounding beneath hypothetical stormwater infiltration basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions. 146 150

IX IX DRAINAGE AREA DRAINAGE AREA MAPS MAPS 151 151

152

Chain-Link Fence 41 Chain-Link Fence 18 2.87' over E 3 41 2 3.04' over E 412 413 416 413 415 41 414 28 LF SHALLOW 4 CONCENTRATIED FLOW 13 LF 3.6%

13 LF 3.6% 4 SHEET FLOW 414 41 13 LF SHALLOW 3.9% CONCENTRATIED FLOW 41 3.9% 5 Vinyl Fence 0.25' over S 5 415 41 DA EXISTING 415 21 LF 417 416

21 LF 417 416 SHEET FLOW 16242 SF 6 9.5% 0.373 AC 41 N 62°02'20" W 130.00' S 61°58'0" E 130.00' Cn=90 417 416 Curb 416 1.0' 17 FF=417.00

FF=417.00 Over N 4 FF=417.28 FF=416.93 FF=424.50 418 FF=417.16 AC 417 417 FF=424.65 418 Curb 418 1.06' over S AC 41 66 LF 1-Story 8 2-Story 418 SHEET FLOW Frame

2-Story 418 SHEET FLOW Frame Mixed-Use 6.8% Dwelling AC 41 41 Masonry 9 9 Building 41 9 9 41 419 FF=420.71 420 FF=420.72 420 FF=423.32 42 FF=424.59 0 Point of 420

0 Point of 420 420 IP Found BEGINNING 421 CO San. Manhole 421 0.05' E 421 421 422.48 Rim 6 IE 8" Clay S 421 3 IE 8" Clay N 422 IE 8" Clay W 421.5 422 422 Curb 1" 1.78' over S WV 17 14 421.85bc 421.78bc 421.60bc 421.50bc 421.12bc 421.01bc 421.03bc

421.78bc 421.60bc 421.50bc 421.12bc 421.01bc 421.03bc San. Manhole 421.70 Rim 414.87 IE 8" Clay S 422 414.70 IE 8" Clay N WV PLEASANT VALLEY WAY Project No.: Calc.By: Page: CASEY & KELLER, INC. 512-516 PLEASANT VALLEY WAY, WEST ORANGE 1240815 JAA 258 MAIN STREET, MILLBURN, NJ 07041 Scale: File Name: Check.By: Date: (973) 379-3280 Fax: (973) 379-7993 EXISTING DRAINAGE AREA 1" = 20' DA-EXISTING JAA 153 12/4/25