23 1345 010 ZB 24 15 42 Eagle Ridge Way Engineering Review No 2 Sept 2 2025

23-1345-010 – ZB24-15 (Waystone Realty LLC – 42 Eagle Ridge Road) Page 3 of 4 3. Layout Plan 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 were submitted, but there is an error in the land area with slopes between 10 and 14.99 percent. Also a plan that shows the location of each area of steep slopes is required. The Applicant will need to provide testimony relative to the steep slope calculations. 3.3. Modular block walls are proposed in the easterly portion of the site. The plan and detail indicates the walls will not exceed four feet in height. A building permit is not required for a wall four feet or less in height. However, a global stability analysis with supporting calculations shall be submitted by the Engineer to ensure that the wall can sustain the proposed wall loadings. 3.4. The Engineer prepared a plan superimposing existing and proposed contours using different grey scales to distinguish between the two sets of contours. 3.5. Soil movement calculations within the limit of Disturbance were provided by the Engineer. 3.6. The Engineer shall provide information and testimony on the types of vehicles that will frequent this Site and how those vehicles will maneuver within the Property. 3.7. Waste disposal, particularly horse waste, shall be addressed. A dumpster is depicted along the southerly elevation of the structure, but information and testimony are required on how this dumpster will be used along with frequency of collection and vehicle maneuverability. 3.8. A detail of the Proposed Pavement (Typ,) was provided. 3.9. The Engineer shall provide testimony if any of the proposed improvements encroach on wetlands or wetlands buffers that exist along the westerly side of Eagle Ridge Way opposite this site. The NJDEP advised the Township that the drainage way on the easterly side of Eagle Ridge Way is not a regulated waterway. 4. Grading & Drainage Plan 4.1. The storm water management plan was designed to comply with the regulations that were in effect at the time of the submission of the application. 4.2. The approval by the West Orange Planning Board for the adjoining parcel at 40 Eagle Ridge Way included some drainage improvements on this parcel. These plans now reflect these improvements. 4.3. The

. The approval by the West Orange Planning Board for the adjoining parcel at 40 Eagle Ridge Way included some drainage improvements on this parcel. These plans now reflect these improvements. 4.3. 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. 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 Times of Concentration were provided along with the method in which they were calculated. 4.6. 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.