23 1345 008 PB 24 19 40 Eagle Ridge Way Engineering Review

23-1345-008 – PB24-19 (TheWayMaker LLC – 40 Eagle Ridge Road) Page 3 of 3 3.2. 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. The wall will need to be inspected and certified. 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 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. 5. Landscaping Plan 5.1 Matrix has no comment on the landscaping plan. 6. Soil Erosion & Sediment Control 6.1. The Applicant shall obtain a soil erosion and sediment control permit from the Hudson-Essex-Passaic Soil Conservation District. Matrix reserves the right to review the certification and approved plans from the district. We thank you for the opportunity to be of service to the Township of West Orange Planning Board. Please feel free to contact me directly with any questions or comments at (973) 295-3279 or via e-mail at pscott@mnwe.com. Sincerely, MATRIX NEW WORLD ENGINEERING Phillip Scott, P.E.,

Planning Board. Please feel free to contact me directly with any questions or comments at (973) 295-3279 or via e-mail at pscott@mnwe.com. Sincerely, MATRIX NEW WORLD ENGINEERING Phillip Scott, P.E., C.M.E. Director of Urban Engineering and Development LL:PS Enclosures Cc: Dennis Petrocelli, PG – Vice President, Matrix F:\2023\23-1345 West Orange 2024 Municipal Engineering Services\008 - PB-24-19, TheWayMaker LLC - 40 Eagle Ridge Way\Correspondence\Letters\23-1345-008 - PB-24-19 - 40 Eagle Ridge Way - Engineering Review.docx