CME Associates Review 1

\ ASSOCIATES Chairman and Members of the West Orange Township Planning Board June 26, 2024 Re: West Essex Highlands, LLC (PB 24-01) Our File No. VWRP0179.01 Preliminary & Final Site Plan - Review #1 Page 11 $:\West Orange\Planning Board\VWRPO179.01 - West Essex Highlands, Inc\Review #1 0 15. The front end of the report should be revised to adjust text outside the header of the report. \n addition, the language in the report should be revised to be consistent with the proposed conditions. We note several areas where the report references the incorrect number of basins as well as the incorrect type of BMP being proposed (i.e., infiltration basin vs. pervious pavement). 16. The tables at the front end of the SWM report which outline pre- and post-development peak runoffs should be revised to be consistent with the stormwater analysis. 17. The Pre-Development Drainage Area Map should be revised to remove all proposed improvements and should only reflect current existing conditions. 18. Each subdrainage area shall be clearly delineated on the drainage area map. In addition, the total area, CN, Tc, for each subdrainage area should be included on the map. Hydrograph names should be consistent with the drainage areas indicated on the revised DA maps. 19. Full size drainage area maps at an enlarged scale should be provided for review. 20. The Tc paths for all subdrainage areas should be clearly indicated on the drainage area maps. 21. Verify drainage areas indicated in the SWM report for all subdrainage areas as same are inconsistent with drainage area maps. Check and revise as necessary. 22. We note that the Point of Analysis (POA) in the Pre- and Post-Development Drainage Area maps are inconsistent; the POA’s should be the same to verify consistency in the analysis. The stormwater analysis should be revised as necessary. 23. Provide callouts for all Filterra systems depicted on the site plan. Verify that the dimensions included on same are consistent with the dimensions in the SWM report. 24. Revise names of proposed BMPs for consistency with the site plan and SWM report. We note that BMPs are identified as detention basins whereas small-scale infiltration basins and/or pervious pavement systems are proposed. Check and revise as necessary. 25. Verify drainage area for hydrograph ‘Basin 1 Undetained’ as same is inconsistent with the DA map. 26. Verify

basins and/or pervious pavement systems are proposed. Check and revise as necessary. 25. Verify drainage area for hydrograph ‘Basin 1 Undetained’ as same is inconsistent with the DA map. 26. Verify invert elevation of 8” orifice for Basin 1 in the site plan as same is inconsistent with SWM report. 27. Verify drainage area for hydrograph ‘All basin’s 2 undetained’ as same is inconsistent with the DA map. 28. Verify drainage area for hydrograph ‘Basin 2-1’ as same is inconsistent with the DA map. 29. Verify drainage area for hydrograph ‘Basin 2-2’ as same is inconsistent with the DA map. docx