260205_JF_Zoning Response Letter_42 ERW

Project No. 24006174A February 5, 2026 Page 5 | 7 4.5. The Applicant’s engineer shall explain the reason for offsetting the proposed impervious area by the amount of impervious area and regulated motor vehicle surfaces that existed under the prior use. At the time of this application the remnants of the prior use were removed. The application form does not indicate any impervious areas on the parcel. Under recent guidance from the NJDEP for the review of stormwater designs, the “existing conditions” are the conditions that exist today. The Demolition Plan shows structures and driveway area that were previously removed. These pre- existing improvements must be excluded from the “existing conditions” as it relates to the impervious coverage on the parcel. Response: The demolition of the existing improvements at 42 Eagle Ridge Way took place in 2022, as part and parcel of the Application before this Board. Prior to the issuance of the demolition permit and during the demolition of the improvements, communications were made with the Zoning office regarding the intended development of the property as an equine facility, and concept plans were provided to the Township with a plan to submit full plans in the fall of 2022, as records on file with the Township demonstrate. While these plans were ultimately submitted in the fall of 2024, the development of the project was continuously ongoing. The demolition of the existing improvements was done in the anticipation of the construction of new improvements, not as a stand-alone project with the intention of leaving the site vacant, therefore the demolished improvements are the appropriate surface to be used as the initial/existing conditions for the stormwater management analysis. 4.6. The Applicant’s engineer shall provide results of a geotechnical investigation to ensure the infiltration system meets the requirements of Chapter 12 of the NJ Stormwater Best Management Practices (BMP) Manual. Verification of the depth of bedrock and seasonal high-watertable shall be submitted to the Municipal Engineer and confirmed prior to the issuance of a building permit. Test pits shall be made in accordance with NJDEP BMP manual and regulations for groundwater table location. Groundwater mounding calculations for the proposed infiltration basin should be provided in accordance with Chapter 13 of the NJDEP BMP. Response: The

l and regulations for groundwater table location. Groundwater mounding calculations for the proposed infiltration basin should be provided in accordance with Chapter 13 of the NJDEP BMP. Response: The Geotechnical Report is included as Appendix E in the Stormwater Management Report, which will be provided prior to final approval. 4.7. The Times of Concentration were provided along with the method in which they were calculated. The proposed Time of Concentration calculations shall utilize the McCuen-Speiss limitation for determining the length of sheet flow. Response: The McCuen-Speiss limitation calculations for the proposed drainage areas are as follows: PR 1A-P: 𝟏𝟎𝟎 × √𝟎.𝟎𝟕𝟐𝟓 𝟎.𝟏𝟓 = 179.51, maximum sheet flow of 100 ft used PR 1B-P: 𝟏𝟎𝟎 × √𝟎.𝟎𝟒 𝟎.𝟏𝟓 = 133.33, maximum sheet flow of 100 ft used PR 1B-I: 𝟏𝟎𝟎 × √𝟎.𝟎𝟐 𝟎.𝟎𝟏𝟏 = 1285.65, maximum sheet flow of 100 ft used PR 2-P: 𝟏𝟎𝟎 × √𝟎.𝟎𝟖𝟑𝟑 𝟎.𝟏𝟓 = 192.41, sheet flow of 84 ft used A revised Stormwater Management Report including these calculations will be provided. 4.8. The Applicant’s Engineer provided calculations on the Drywell overflow for both capacity and discharge velocity and offsite stability calculations as per NJ Soil Erosion and Sediment Control Standards.