26 03 25 CME Engineering Review 2

—_ Consulting & Municipal ENGINEERS “ASSOCIATES: 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 5 Variances and Tree Removal Permit - Review #2 12. Sheet 5 should be revised to show the locations of the proposed detectable warning surfaces. 13. It shows on sheet 6 that there is an existing low point on the common property line with lot 2 just north of the existing ‘A’ inlet. In order to address this issue, it is our recommendation that the elevation of the grate on the existing ‘A’ inlet be lowered to provide positive drainage to the inlet. 14. It shows on sheet 7 that the Applicant proposes to install a new 6” DIP sewer lateral which will connect to an existing 6” cast iron sewer line. However, condition of the existing 6” cast iron sewer line is not known. As discussed at the November 18, 2025 SPRAB meeting, the existing cast iron sewer lateral should be televised to the point of connection to the existing sewer main to demonstrate that it is in good condition. In addition, sheet 7 should be revised to show the existing sewer main that the existing 6” cast iron sewer line connects to. 15. The plans should be revised to include the following details: a) Detectable Warning Surface b) Trash Rack c) 4’ Wide Riprap Swale d) Striped hatching adjacent to the proposed building e) Curb Taper Cc. STORMWATER MANAGEMENT COMMENTS 1. On May 20, 2025, the Township of West Orange adopted Ordinance 2918-25 which amended the Township's Stormwater Control Ordinance (SCO). This Ordinance defines a major development as one which individually or collectively results in: a. The disturbance of 0.5 acre of land since February 2, 2004. b. The creation of 5,000 square feet or more of “regulated impervious surface” since February 2, 2004. c. The creation of 5,000 square feet or more of “regulated motor vehicle surface” since March 2, 2021, or d. A combination of b and c above that totals 5,000 square feet or more. The same surface shall not be counted twice when determining if the combination area equals one-quarter acre or more. It shows on sheet 12 that the area of disturbance will be 32,434 sf or 0.74 acres. Asa result, this project is classified as a major development and

combination area equals one-quarter acre or more. It shows on sheet 12 that the area of disturbance will be 32,434 sf or 0.74 acres. Asa result, this project is classified as a major development and must comply with the requirements in Ordinance 2918-25. 2. The Applicant proposes an underground detention basin and a bioretention basin to mitigate the increase in runoff from the site. The overflow from these basins and the stormwater runoff from the undetained portions of the site will be collected and discharged to an existing 15” pipe which exits the property at the northeast corner of the site. H:\Legacy\Howell-FS1\SEC\West OrangelZoning Board\t 15 WRZ0105 V01 - Mavis Tire Supply, LLC\26-03-25 Review #2 dock