23 1345 008 PB 24 19 40 Eagle Ridge Way Engineering Review Revised 8 Jan 2025

23-1345-008 – PB24-19 (TheWayMaker LLC – 40 Eagle Ridge Road) Page 3 of 4 3.1. The Applicant shall provide testimony regarding the existing site conditions, proposed improvements, and conformance with applicable ordinances and regulations. 3.2. Steep slope calculations are required as per Section 25-28 of the Land Use Regulations. The plan shall comply with the provisions of the Ordinance. 3.3. A boulder wall that is over ten feet in height was constructed along the rear property line. No permit was issued for this wall and since it is over six feet in height, the wall violates Ordinance 25-8.4a. A violation notice was issued. To bring the wall into compliance with the Ordinance, the plan proposes to place fill material along the face of the wall. However, a construction detail of this wall is required and since the original wall exceeded four feet, a building permit must also be obtained. Details of the retaining wall are not depicted in the Plans on Sheets 3, 6 and 7 of 8. A global stability analysis with supporting calculations shall be submitted by the Engineer to ensure that the wall can sustain the proposed wall loading. The wall will need to be inspected and certified. 3.4. The Engineer shall prepare a plan superimposing existing and proposed contours in color to clearly show the differences between the two sets of contours including elevations at the proposed walls. 3.5. Soil movement calculations within the limit of Disturbance shall be provided by the Engineer. 4. Grading & Drainage Plan 4.1. The Applicant’s engineer shall provide details of the previously installed drywell system/seepage tank field. 4.2. The Applicant’s engineer shall provide clarify how stormwater runoff will discharge from the existing drywell system/seepage tank field. If there is an outflow pipe connecting to an off-site system, it shall be detailed on the plans and noted in the stormwater management report. 4.3. The Applicant’s engineer shall explain the purpose of removing the portion of the 36” elliptical pipe and the addition of the proposed single chamber outlet control structure and scour hole at the southwest corner of the property. This change in the drainage system shall also be addressed in the stormwater management report. 4.4. The Applicant’s engineer shall provide results of a geotechnical investigation to ensure the infiltration system meets the requirements of

l also be addressed in the stormwater management report. 4.4. 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-water table 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. 4.5. The Drainage Report needs to account for un-detained areas as the flow for these areas is not accounted for. Check page 9 page 11 and page 13 of the report as this un-detained area is approximately 0.06 acres. 4.6. The Time of Concentration calculations were not provided. They need to be depicted on the drainage area maps. 4.7. Drywell overflow pipe calculations are required for capacity and discharge as well as offsite stability (velocity) as per NJ Soil Erosion and Sediment Control Standards. 4.8. On page 52 of the Report, the Engineer shall check the rise and span of the elliptical pipe in the calculations as the survey states 36 inch elliptical. Also review the “n” value fo this pipe as well as its slope which appears to be 6.4 percent (0.064 and not 0.100). 4.9. On page 62 of the Report, the Engineer shall verify from the manufacturer of the pervious pavers that there is sufficient storage of 305 cubic feet. 4.10 On page 66 of the Report the Engineer shall indicate on the plans where this inlet with the orifice is located.