V4 11 Stormwater Report Rev 3 1 26 2023

Time of Concentration Calculations Project #: 20-0265 Pre-Development Project: Daughters of Israel Post-Development County: Essex Drainage Area: DA-3 Sheet Flow Segment 1 Segment 2 Segment 3 Woods, Light Woods, Light Surface Description (Table 3-1) Grass, Dense Grasses Underbrush Underbrush Manning's Roughness Coeff., n (Table 3-1) 0.24 0.4 0.4 Flow Length, L (total ≤ 100 ft) 23 51 26 Two-Year 24-Hour Rainfall, P2 3.44 3.44 3.44 Land Slope, s (ft/ft) 0.04 0.08 0.46 Tt 3.22 6.94 2.01 12.17 Shallow Concentrated Flow Segment 1 Segment 2 Segment 3 Surface Description Unpaved Unpaved paved Flow Length, L 345 185 207 Watercourse Slope, s 0.31 0.06 0.04 Average Velocity 8.9 3.9 4.1 Tt 0.65 0.79 0.85 2.28 Channel Flow Segment 1 Segment 2 Segment 3 Cross Sectional Flow Area, a Wetted Perimeter, Pw Hydraulic Radius, r - - - Channel Slope, s Manning's Roughness Description Manning's Roughness - - - Velocity - - - Flow Length Tt - - - 0.00 14.46

Time of Concentration Calculations Project #: 20-0265 Pre-Development Project: Daughters of Israel Post-Development County: Essex Drainage Area: DA-4 Sheet Flow Segment 1 Segment 2 Segment 3 Woods, Light Woods, Light Surface Description (Table 3-1) Underbrush Underbrush Manning's Roughness Coeff., n (Table 3-1) 0.4 0.4 - Flow Length, L (total ≤ 100 ft) 48 52 Two-Year 24-Hour Rainfall, P2 3.44 3.44 3.44 Land Slope, s (ft/ft) 0.08 0.19 Tt 6.61 4.99 - 11.60 Shallow Concentrated Flow Segment 1 Segment 2 Segment 3 Surface Description Unpaved Unpaved paved Flow Length, L 52 117 270 Watercourse Slope, s 0.06 0.24 0.01 Average Velocity 3.9 7.8 2.0 Tt 0.22 0.25 2.23 2.70 Channel Flow Segment 1 Segment 2 Segment 3 Cross Sectional Flow Area, a Wetted Perimeter, Pw Hydraulic Radius, r - - - Channel Slope, s Manning's Roughness Description Manning's Roughness - - - Velocity - - - Flow Length Tt - - - 0.00 14.30

Project #: 20-0265 Green Roof Calculations Project: Daughters of Israel County: Essex Depth of Media (In) 4 *Based on 20% 1-7mm pumice, Available water capacity for Runoff retention * 0.231 60% 4-10mm pumic, 20% Drainage Layer Depth 0 composted pine bark fines (BMP Manual) Drainage Layer Field Capacity 0 Area of Area of Total Rainfall (IN) Green Sv (SF) Roof (SF) Roof (SF) 2 YR 10 YR 100 YR Phase I 44933 4492 345.9 3.44 5.22 8.66 Phase II & III 76224 18366 1414.2 Volume Without Green Roof (CF) Volume With Green Roof (CF) 2 YR 10 YR 100 YR 2 YR 10 YR 100 YR P1 11,240 17,466 29,513 P1 10,894 17,120 29,167 P2/3 19,097 29,675 50,144 P2/3 17,683 28,261 48,730 Q (CFS) Adjusted CN 2 YR 10 YR 100 YR 2 YR 10 YR 100 YR P1 2.91 4.57 7.79 P1 95 94 93 P2/3 2.78 4.45 7.67 P2/3 94 93 92

100-yr 10-yr 2-yr Phase 1 Phase 2/3 Step 5: Caculate Peak Flow Rates by Adjusted Curve Number Calculate the time of concentration and use it along with the adjusted curve numbers determined in Step 4 to calculate the peak flow rates of each of the storm events using NRCS methodology. Note that the time of concentration of a green roof must be calculated based on the vegetation condition, roof slope and drainage path. A green roof with dense vegetation and a milder slope may provide a longer time of concentration, which will slow down the discharge of the roof runoff and lower the peak rate of the runoff. The time of concentration must be calculated in accordance with the velocity method described in the NEH, Chapter 15 - Time of Concentration. New Jersey Stormwater Best Management Practices Manual March 2021 Green Infrastructure BMPs, Chapter 9.4: Green Roofs Page 15

The Newest GreenGrid® Modular Vegetative Green Roof System The 5th Generation GreenGrid® Module Launches 2021 These new zero-edged modules are an imporvement to the previous generation of GreenGrid®, maintaing the functionality of the original modular green roof system, but adding improved structural design, multiple depth configurations, connectivity, and excellent stormwater retention. Unlike hybrid /subterranean modular systems and traditional layered systems, G5 modules can be easily accessed and removed to perform maintenance or repairs to the underlying roof without damaging the vegetation. Additionally, G5 modules are specifically designed to maximize stormwater control, and now allow irrigation lines directly beneath modules. GreenGrid offers versatility and design flexibility, with modules available in FOUR different depths for a variety of planting options. Modules can be pre-grown at our nurseries to meet plant coverage specifications up to 95% and delivered to the job site to create an instant mature green roof. This translates to a successful green roof with less up-front maintenance, plus a beautiful look from day one. In addition, GreenGrid modules can be custom cut with curves or angles. www.GreenGridRoofs.com GreenGrid is a registered trademark of Weston Solutions, Inc. (WESTON). The GreenGrid® system is a proprietary technology of WESTON in the U.S. and Canada. U.S. patents 7,900,397 / 7,997,027 / 8,555,545 ® Canadian patents 2,416,457 / 2,416,463 / 2,418,262

Two and a Half Inch Tray Pre-Vegetated 4-inch Module Four Inch Tray Six Inch Tray Top View Four Inch Tray Eight Inch Tray GreenGrid Component Specification Description and Notes Dimensions (W x L) Depth (D) G5 System Modules Standard Units SI Units Standard Units SI Units Ultra-Extensive 2.5 in. 6.35 cm Extensive 24 in. x 24 in. 60.96 cm x 60.96 cm 4.0 in. 10.80 cm Semi-Intensive [OD ± 1/8 in.] [OD ± 0.318 cm] 6.0 in. 15.24 cm Intensive 8.0 in. 29.32 cm Weight Range Approximate Minimum Note 1 Approximate Maximum Note1 Ultra-Extensive 10 lbs/sf 48.82 kg/m2 15 lbs/sf 73.24 kg/m2 Extensive 20 lbs/sf 97.65 kg/m2 30 lbs/sf 141.59 kg/m2 Semi-Intensive 25 lbs/sf 122.06 kg/m2 45 lbs/sf 214.83 kg/m2 Intensive 30 lbs/sf 141.59 kg/m2 60 lbs/sf 292.95 kg/m2 Drainage Clearance 3/4 in. 1.91 cm All size modules Module Material Ultra-Extensive 100% pre-consumer linear low density or medium density polyethylene. Extensive Protected with UV inhibitors and stabilizers. Semi-Intensive Intensive Module Color Black [custom colors available upon request]

ive Protected with UV inhibitors and stabilizers. Semi-Intensive Intensive Module Color Black [custom colors available upon request] Pre-planted and grown to mature coverage. Upgrades for higher planting density, larger plants, Planting options and/or sedum mats available. Crossover (hidden module) planting option with sedum mat. FLL-compliant extensive, semi-intensive, and intensive regional blends. Custom blends also Growing Medium available. Varies by depth and project location. Succulents and groundcovers typical in all module depths. Vegetation Ornamental grasses and perennials for 6-in and 8-in applications. Native and other custom plantings also available. Typical Underlayment Single-source warranties available with Carlisle. Module Connectors Nylon/Plastic panel fasteners or zip ties. 1/4 in. (0.64 cm) drill hole diameter required. Irrigation Systems Proprietary system designed based on project-specific requirements. Note 1: All weights are presented with growing media at maximum water-holding capacity. Conservative estimates for vegetation and module weight per SF have been included in above weight ranges. Weights may vary based on requirements for project-specific vegetation selections and variations in regional materials incorporated into engineered growing media. Consult GreenGrid representative for further information. Local contacts are available on our Web site www.GreenGridRoofs.com or contact our headquarters office at 888-404-4743 © Weston Solutions 2021 B-GG-8 6.21

REVISION DESCRIPTION DATE BY PREPARED FOR DAUGHTERS OF ISRAEL 1155 PLEASANT VALLEY WAY BLOCK 171 LOT 12 TOWNSHIP OF WEST ORANGE ESSEX COUNTY, NEW JERSEY EXISTING CONDITIONS Designer: JMP Draftsman: PPP Checked By: JMP Project No.: 19-265 ENGINEERING , LLC DIVISION OF CONSUMER AFFAIRS LICENSE NUMBER 24GA28155900 Scale: 1" = 150' 155 PASSAIC AVENUE FAIRFIELD NEW JERSEY 07004 TEL. (973) 227-7004 FAX (973) 227-7074 Sheet: MV-1

REVISION DESCRIPTION DATE BY PREPARED FOR DAUGHTERS OF ISRAEL 1155 PLEASANT VALLEY WAY BLOCK 171 LOT 12 TOWNSHIP OF WEST ORANGE ESSEX COUNTY, NEW JERSEY PROPOSED CONDITIONS Designer: JMP Draftsman: PPP Checked By: JMP Project No.: 19-265 ENGINEERING , LLC DIVISION OF CONSUMER AFFAIRS LICENSE NUMBER 24GA28155900 Scale: 1" = 150' 155 PASSAIC AVENUE FAIRFIELD NEW JERSEY 07004 TEL. (973) 227-7004 FAX (973) 227-7074 Sheet: MV-2

REVISION DESCRIPTION DATE BY PREPARED FOR DAUGHTERS OF ISRAEL 1155 PLEASANT VALLEY WAY BLOCK 171 LOT 12 TOWNSHIP OF WEST ORANGE ESSEX COUNTY, NEW JERSEY EXISTING & PROPOSED OVERLAY Designer: JMP Draftsman: PPP Checked By: JMP Project No.: 19-265 ENGINEERING , LLC DIVISION OF CONSUMER AFFAIRS LICENSE NUMBER 24GA28155900 Scale: 1" = 150' 155 PASSAIC AVENUE FAIRFIELD NEW JERSEY 07004 TEL. (973) 227-7004 FAX (973) 227-7074 Sheet: MV-3