JMA02P003 262 270 Main Street Development Stormwater Management Report

Engineering Stormwater Narrative JMA02P003- May 26, 2026 262-270 Main St Development 7 Groundwater Mounding GROUNDWATER MOUNDING BMP ESTIMATED BOTTOM OF BMP GROUNDWATER GROUNDWATER SHGWT ELEVATION MOUNDING HEIGHT MOUNDING ELEVATION Basin A 91.50 95.70 3.19 94.69 Porous Pavement B 91.50 97.00 4.00 95.50 As shown in the table above, the groundwater mounding does not exceed the bottom elevation of the stormwater management measures. Therefore, the groundwater mounding requirements have been met. 8 Conclusion The stormwater management plan proposed meets all the requirements set forth by the NJDEP. Design modification requirements that may occur during the approval process will be performed and submitted for review to the Township of West Orange. 3