CME Associates Review 2

py of the NJDEP approval must be submitted to the Planning Board. It shows on the Zoning Schedule on sheet SP-3 that 1,070 parking spaces are proposed. We note that the Overall Development Summary on sheet SP-3 shows that 1,070 parking spaces are proposed for the apartment units. In addition, the plans show that 55 parking spaces are proposed at the clubhouse and 17 parking spaces are proposed at the dog park. Therefore, a total of 1,142 parking spaces are proposed. The Zoning Schedule must be revised accordingly. Our office notes that Sheet SP-6 has been revised to label the improvements that are proposed at the Warner Road wetlands crossing. However, some of the labels are not visible as they are out of the viewport. The plan must be revised accordingly. Our office notes that Sheet SP-6 has been revised to provide a handicap parking space near the dog park and maintenance building. It shall be clarified how ADA access will be 'S:\West Orange\Planning Board\VWRPO179.01 - West Essex Highlands, Inc\Review #2 07-29-24.docx

\ ASSOCIATES Chairman and Members of the West Orange Township Planning Board July 29, 2024 Re: West Essex Highlands, LLC (PB 24-01) Our File No, VWRP0179.01 Preliminary & Final Site Plan - Review #2 Page 7 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. provided to the buildings as it appears a full height curb is proposed in front of the handicap parking space aisle. The grading plans must be revised to indicate the top of curb and grade elevations of all proposed full height curb and flush curb. Additionally, spot elevations must be added to all ADA ramps and ADA accessible landing areas. Additional spot elevations must be added to the handicap accessible parking spaces on the west side of the roadway across from Building D.1. Spot elevations must be added to the northern corner of Building B, the corners of the Clubhouse Building, the corners of the Pump Station Building, and the rear of Building D.1. Further, spot elevations must be added to southerly door at Building B, the northerly door at Building C, the easterly door with steps at Building C, the doors at the Clubhouse Building, the doors on each side of the Kennel Building, the door at the Maintenance Building, and the doors along the east side of Building D. It shows on sheets SP-13 and SP-14 that the dog kennel building has a finish floor elevation of 563 whereas the ground elevation in front of the door on the easterly side of the building is approximately 557.9 and the ground elevation in front of the door on the westerly side of the building is approximately 558.5. The grading must be adjusted to provide proper access to the building. Sheet SP-13 must be revised to label the contours between Building A.1 and Kuzik Drive. Additionally, the contours on the north and easterly side of Kuzik Drive across from Building A.1 and the Maintenance Building must be labeled. Sheets SP-13 and SP-14 shall be revised to clarify or remove the unlabeled contour that ties into the maintenance building between the proposed 560 and 562 contours and ties into the Kennel Building between the proposed 558 and 560 contours. Additionally, the spot elevation at the northeastern corner of the Kennel building shall be evaluated. Sheet SP-15 must be revised to include additional elevation information for the retaining walls east of the clubhouse. Sheets SP-16 and SP-17 shall be revised to label the proposed

all be evaluated. Sheet SP-15 must be revised to include additional elevation information for the retaining walls east of the clubhouse. Sheets SP-16 and SP-17 shall be revised to label the proposed contours on the east and west sides of building D.2. Detail No. 10 on Sheet SP-59 must be named. The plans should be revised to include details of the following improvements that are proposed: a) Keep Right Around Circle sign. b) Electric Vehicle parking space sign. c) Pump stations. d) Emergency access drive to Howell Drive. S:\West Orange\Planning Board\VWRPO179.01 - West Essex Highlands, Inc\Review #2 07-29-24 docx

- ASSOCIATES Chairman and Members of the West Orange Township Planning Board July 29, 2024 Re: West Essex Highlands, LLC (PB 24-01) Our File No. VWRP0179.01 Preliminary & Final Site Plan - Review #2 Page 8 e) Emergency access drive gate. f) Retaining walls. g) Porous HDPE pipe installation detail. h) Sanitary sewer manhole. i) Sanitary force main. j) Tennis courts k) Gazebo |) Pergola m) Span bridge E. DRAINAGE COMMENTS 1. The proposed development will result in the disturbance of more than one acre. As a result, it is classified as a Major Development and is subject to the stormwater management requirements set forth in Section 25-29.4 of the Ordinance. In accordance with Section 25-29.4.j, manufactured treatment devices may be used to meet the requirements of this subchapter, provided the pollutant removal rates verified by the New Jersey Corporation for Advanced Technology and certified by NJDEP. The Applicant should provide copies of the NUDEP certification to confirm the proposed MTD’s will meet the green infrastructure requirements. It appears that soil testing, including soil profile pits and/or soil borings, have been performed throughout the site. However, copies have not been provided to the Board. The Applicant should provide a copy of the soil report to the Planning Board and our office for review. The Stormwater Management Report should be revised to include a Low Impact Development Checklist. The Stormwater Management Report should be revised to include a completed Hydrologic Modeling Database - Data Entry Short Form. Our office notes that storm sewer pipe size calculations were provided and appear to be acceptable. However, a storm inlet drainage area map should be included in the Stormwater Management Report to verify the area draining to each inlet. The Stormwater Management Report must be revised to include existing conditions hydrographs to verify the existing runoff rates as described in the report narrative. The tables in the Stormwater Management Report which outline pre- and post- development peak runoffs should be revised to be consistent with the stormwater analysis. All un-detained areas must be included. The Pre-Development Drainage Area Map should be revised to remove all proposed improvements and should only reflect current existing conditions. Additionally, the time of concentration flow path for each point

evelopment Drainage Area Map should be revised to remove all proposed improvements and should only reflect current existing conditions. Additionally, the time of concentration flow path for each point of analysis shall be indicated. S:\West Orange\Planning Board\VWRPO179 01 - West Essex Highlands, Inc\Review #2 07-29-24 docx

\ ASSOCIATES Chairman and Members of the West Orange Township Planning Board July 29, 2024 Re: West Essex Highlands, LLC (PB 24-01) Our File No. VWRP0179.01 Preliminary & Final Site Plan - Review #2 Page 9 10. Submit a clear Post-Development Drainage Area Map that is to scale. 11. 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. 12. The impervious time of concentration calculations for large scale infiltration basin #1, small scale infiltration basin #2, porous pavement system #3, small scale infiltration basin #7, porous pavement system #8, porous pavement system #9, small scale infiltration basin #10, porous pavement system #11, and small scale subsurface infiltration basin #12 must be revised. It is not acceptable to use a pervious time of concentration calculation for impervious areas. 13. The Post-Development Drainage Area Map must be revised to depict time of concentration flow paths for DA #2, DA #3, DA #7, DA #8, and the un-detained drainage areas. Additionally, the Tc line for DA #10 must be labeled. 14. The overland flow areas listed for DA #1 and DA #6 on the Post-Development Drainage Area Map shall be reviewed for consistency with the areas listed in the “Total Undetained to PA-1” note as the overland flow areas do not add to the total un-detained area. 15. The overland flow areas listed for DA #2, DA #4, DA #7, DA #9, DA #10 and DA #11 on the Post-Development Drainage Area Map shall be reviewed for consistency with the areas listed in the “Total Undetained to PA-2” note as the overland flow areas do not add to the total un-detained area. 16. The ‘Total Undetained to PA-1’ and ‘Total Undetained to PA-2’ notes on the Post- Development Drainage Area Map shall be evaluated. It appears un-detained impervious areas are incorrectly indicated as ‘pervious’ and un-detained pervious areas are incorrectly indicated as ‘pervious’. This discrepancy must be resolved. 17. Sheet SP-21 depicts a 24” HDPE inlet pipe to large-scale basin #1 at invert elevation 24.00, whereas the basin bottom is at elevation 23.50. This discrepancy must be resolved. Further, the basin bottom at elevation 23.50 must be depicted on the plan. 18. The top of grate elevation for outlet

whereas the basin bottom is at elevation 23.50. This discrepancy must be resolved. Further, the basin bottom at elevation 23.50 must be depicted on the plan. 18. The top of grate elevation for outlet structure #1 is inconsistent between Sheet SP-21, SP- 25 and the hydrographs. This discrepancy must be resolved. 49. Sheet SP-25 must be revised to indicate top of grate in lieu of ‘100 year overflow elevation’ on the outlet structure #1 detail. 20. The Stormwater Management Report indicates that exfiltration will be utilized for small scale infiltration basin #2, however, the hydrograph routings do not include exfiltration. This discrepancy must be clarified. ‘S:\West Orange\Pianning Board\VWRPO179,01 - West Essex Highlands, Inc\Review #2 07-29-24 docx

Ne ASSOCIATES Chairman and Members of the West Orange Township Planning Board July 29, 2024 Re: West Essex Highlands, LLC (PB 24-01) Our File No. VWRP0179.01 Preliminary & Final Site Plan - Review #2 Page 10 21. The 10-year and 100-year water surface elevations on outlet structure #2 and infiltration basin #2 details are inconsistent with the hydrographs. This discrepancy must be resolved. 22. The top of grate elevation for outlet structure #2 is inconsistent between Sheet SP-21, SP- 25 and the hydrographs. This discrepancy must be resolved. 23. Per Chapter 9.8 of the NJ BMP Manual, small-scale infiltration basins require a minimum of 2.0 ft of separation between the lowest elevation of the sand layer and the seasonal high-water table, whereas small-scale basin #2 provides a separation of 1.5 ft between the lowest elevation of the sand layer and the seasonal-high water table. Design modifications appear to be required. 24. Sheet SP-20 must be revised to identify the pipes proposed in conjunction with porous pavement system #3. 25. Sheet SP-20 indicates that outlet structure #3 has a 6” orifice at elevation 559.5, however, the hydrograph routings and outlet structure #3 detail on Sheet SP-25 indicate that a 4’ weir is proposed at elevation 559.22. This discrepancy must be resolved. 26. The hydrograph routings for porous pavement system #3 utilize an exfiltration rate of 10 inches per hour while the Stormwater Management Report indicates a permeability rate of 4 inches per hour and the porous pavement #3 section on Sheet SP-25 indicates a permeability rate of 8 inches per hour. This discrepancy must be resolved. 27. Verify the sizes of the pipes connected to outlet structure #3 as they are inconsistent between the plans and details. Sheet SP-20 and the details on sheet SP-25 must be revised accordingly. 28. Sheet SP-20 indicates that outlet structure #4 has a 6” orifice at elevation 573.5, however, the hydrograph routings and the outlet structure #4 detail on Sheet SP-25 indicate that outlet structure #4 has a 6” orifice at elevation 572.5 and a 4’ weir at elevation 574.0. This discrepancy must be resolved. 29. Sheet SP-19 indicates that outlet structure #5 has a 6” orifice at elevation 579.5, however, the hydrograph routings and the outlet structure #5 detail on Sheet SP-25 indicate that outlet structure #5 has a 4’ weir at elevation 579.25. This

ure #5 has a 6” orifice at elevation 579.5, however, the hydrograph routings and the outlet structure #5 detail on Sheet SP-25 indicate that outlet structure #5 has a 4’ weir at elevation 579.25. This discrepancy must be resolved. 30. Verify the size of pipes connected to outlet structure #6 as they are inconsistent between the plans and details. Sheet SP-19 and the details on Sheet SP-25 must be revised accordingly. 31. Sheet SP-19 indicates that outlet structure #6 has a 6” orifice at elevation 600.5, however, the hydrograph routings and the outlet structure #6 detail on Sheet SP-25 indicate that outlet structure #6 has a 6’ weir at elevation 600.02. This discrepancy must be resolved. S:\West Orange\Planning Board\VWRP0179.01 - West Essex Highlands, Inc\Review #2 07-29-24 docx

\ ASSOCIATES Chairman and Members of the West Orange Township Planning Board duly 29, 2024 Re: West Essex Highlands, LLC (PB 24-01) Our File No. VWRP0179.01 Preliminary & Final Site Plan - Review #2 Page 11 32. 33. 34. 35. 36. 37. 38. 39. 40. At. 42. 43. 44, The hydrograph routings for porous pavement system #6 utilize an exfiltration rate of 10 inches per hour. The Stormwater Management Report indicates that a design permeability rate of 4 inches per hour is utilized and the porous pavement #6 section on Sheet SP-25 indicates the soil replacement permeability will be 20 inches per hour. This discrepancy must be resolved. Sheet SP-25 must be revised to correct the finished grade elevation on porous pavement section #6 detail. Verify drainage areas ‘Basin 7 — Imp’ and ‘Basin 7 — Perv’ as same is inconsistent with the Post-Development Drainage Area Map. The Stormwater Management Report indicates that exfiltration will be utilized for small scale infiltration basin #7, however, the hydrograph routings do not include exfiltration. Clarify. Sheet SP-22 must be revised to indicate the size and elevation of the orifice and or weir associated with outlet structure #7. Additionally, the label for outlet structure #7 includes an invert into the structure at elevation 531.6, however, there does not appear to be a connection into outlet structure #7. This discrepancy must be resolved. Sheet SP-22 indicates that the top of grate for outlet structure #7 is at elevation 533.00, however, the outlet structure #7 detail on Sheet SP-22 indicates a grate elevation of 533.02. This discrepancy must be resolved. Sheet SP-22 must be revised to indicate the size and elevation of the orifice(s) and or weir(s) associated with outlet structure #8. Verify the size of the pipe that exits outlet structure #8 as it is inconsistent between the plan and detail. Sheet SP-22 and the detail on Sheet SP-26 shall be revised accordingly. Verify the size of the pipe that connects to outlet structure #9 as it is inconsistent between the plan and detail. Sheet SP-23 and the detail on sheet SP-26 must be revised accordingly. Sheet SP-23 indicates that outlet structure #9 has a 4”x40” weir at elevation 564.9 while the hydrograph routings and Sheet SP-25 indicate that the weir is a 4’ weir at elevation 564.0. This discrepancy must be resolved. Sheet SP-23 shall be revised to