26 03 25 CME Engineering Review 2

= al Consulting & Municipal ENGINEERS A Subsidiary of Artheon, Inc. Chairman and Members of the West Orange Township Zoning Board March 25, 2026 Re: Mavis Tire Supply, LLC (ZB-25-07) Our File No. 115.WRZ0105.V01 (60001) Preliminary & Final Major Site Plan with ‘C’ & ‘D' Page 7 Variances and Tree Removal Permit - Review #2 11. The stormwater collection system calculations in the stormwater report must be revised to consider the stormwater conveyed through the existing 6” CIP upstream of the existing round inlet. 12. The stormwater report has a section which shows the results of several test pits performed on site. The test pit locations must be shown on the plans. At this time, our office cannot confirm if the required number of test pits were performed or if the minimum separation from the seasonal high water table to proposed basin was met. 13. The drainage area maps and hydrograph summary reports must be revised to include a separate drainage area within the ROW as sidewalk is now proposed. 14. The existing and proposed drainage area maps and hydrograph summary reports must be revised to separate the drainage areas between which stormwater enters the underground pipe system and which stormwater sheet flows off site. 15. The maintenance plan should be revised to include as-built construction plans of the stormwater management measures and copies of pertinent construction documents such as laboratory test results, permits and completion certificates. 16. The maintenance plan should be revised to note that the party responsible for maintenance must submit to the Township every May 1% an annual maintenance report including all preventative and corrective maintenance for the structural stormwater management measures incorporated into the design of the development. 17. The maintenance plan must be revised to include the language from §25-29.13 (Stormwater License and Inspection Requirements). 18. As stipulated in §25-29.12b7(d), the party responsible for maintenance of the site’s stormwater system must post a two-year maintenance guarantee in accordance with N.J.S.A. 49:55D-53. 19. The stormwater management operation and maintenance manual and any future revisions must be recorded upon the deed of record for the property. Prior to recording, the form of the deed must be approved by the Board Attorney and our office. 20. There is a discrepancy

future revisions must be recorded upon the deed of record for the property. Prior to recording, the form of the deed must be approved by the Board Attorney and our office. 20. There is a discrepancy between sheet 6 and the ‘Underground Basin Outlet Control Structure’ Detail on sheet 16 regarding the rim elevation. Revise plans accordingly. 21. There is a discrepancy between sheet 7 and the ‘Outlet Control Structure #2 Detail’ on sheet 15 regarding the invert of the 6” pipe. Revise accordingly. 22. The Drainage & Utility Plan (sheet 7) shows an existing manhole at the southeast corner of the site which could not be opened. The plans must be revised to clarify the purpose of this manhole and to show any associated piping. In their February 19, 2026 letter, Messrs. Ritchie and Freud state that they are working with project surveyor to identify the purpose of this manhole, and this information will be provided as a condition of approval. 23. Sheet 7 shows a proposed storm cleanout within the bioretention basin at elevation 619.39. This will result in the separation between the underdrain and the sand layer being less than the minimum three inches. Revise to ensure the minimum separation is met. H:\Legacy\Howell-FS1\SEC\West OrangelZoning Board\ 15 WRZ0105.VO1 - Mavis Tire Supply, LLC\26-03-25 Review #2 docx