Draft Impervious Cover Reduction Action Plan for Newark, Essex County, New Jersey Volume 2

Draft Impervious Cover Reduction Action Plan for Newark, Essex County, New Jersey Volume 2 Prepared for the City of Newark by the Rutgers Cooperative Extension Water Resources Program April 16, 2018

Table of Contents Introduction 1 Methodology... 1 Green Infrastructure Practices 8 Potential Project Sites 10 Conclusion... 11 Appendix A: Climate Resilient Green Infrastructure a. Green Infrastructure Sites b. Proposed Green Infrastructure Concepts c. Summary of Existing Conditions d. Summary of Proposed Green Infrastructure Practices

Introduction Located in Essex County in northern New Jersey, Newark covers approximately 26.22 square miles. Figures 1 and 2 illustrate that Newark is dominated by urban land uses. A total of 86.8% of the municipality s land use is classified as urban. Of the urban land in Newark, high density residential is the dominant land use (Figure 3). The New Jersey Department of Environmental Protection s (NJDEP) 2012 land use/land cover geographical information system (GIS) data layer categorizes Newark into many unique land use areas, assigning a percent impervious cover for each delineated area. These impervious cover values were used to estimate the impervious coverage for Newark. Based upon the 2012 NJDEP land use/land cover data, approximately 63.2% of Newark has impervious cover. This level of impervious cover suggests that the streams in Newark are likely non-supporting streams. 1 Methodology Newark contains portions of six subwatersheds (Figure 4). For this impervious cover reduction action plan, projects have been identified in each of these watersheds. Initially, aerial imagery was used to identify potential project sites that contain extensive impervious cover. Field visits were then conducted at each of these potential project sites to determine if a viable option exists to reduce impervious cover or to disconnect impervious surfaces from draining directly to the local waterway or storm sewer system. During the site visit, appropriate green infrastructure practices for the site were determined. Sites that already had stormwater management practices in place were not considered. 1 Caraco, D., R. Claytor, P. Hinkle, H. Kwon, T. Schueler, C. Swann, S. Vysotsky, and J. Zielinski. 1998. Rapid Watershed Planning Handbook. A Comprehensive Guide for Managing Urbanizing Watersheds. Prepared by Center For Watershed Protection, Ellicott City, MD. Prepared for U.S. Environmental Protection Agency, Office of Wetlands, Oceans and Watersheds and Region V. October 1998. 1

Figure 1: Map illustrating the land use in Newark 2

Water 8.5% Wetlands 1.0% Agriculture 0.0% Barren Land 1.0% Forest 2.7% Urban 86.8% Figure 2: Pie chart illustrating the land use in Newark 3

Transportation/Infrastructure 26.4% Commercial 15.3% Rural Residential 0.0% Recreational Land 6.4% High Density Residential 30.9% Mixed Urban 6.5% Medium Density Residential 0.5% Low Density Residential 0.0% Industrial 14.0% Figure 3: Pie chart illustrating the various types of urban land use in Newark 4

Figure 4: Map of the subwatersheds in Newark 5

For each potential project site, specific aerial loading coefficients for commercial land use were used to determine the annual runoff loads for total phosphorus (TP), total nitrogen (TN), and total suspended solids (TSS) from impervious surfaces (Table 1). These are the same aerial loading coefficients that NJDEP uses in developing total maximum daily loads (TMDLs) for impaired waterways of the state. The percentage of impervious cover for each site was extracted from the 2012 NJDEP land use/land cover database. For impervious areas, runoff volumes were determined for the water quality design storm (1.25 inches of rain over two-hours) and for the annual rainfall total of 44 inches. Preliminary soil assessments were conducted for each potential project site identified in Newark using the United States Department of Agriculture Natural Resources Conservation Service Web Soil Survey, which utilizes regional and statewide soil data to predict soil types in an area. Several key soil parameters were examined (e.g., natural drainage class, saturated hydraulic conductivity of the most limiting soil layer (Ksat), depth to water table, and hydrologic soil group) to evaluate the suitability of each site s soil for green infrastructure practices. In cases where multiple soil types were encountered, the key soil parameters were examined for each soil type expected at a site. For each potential project site, drainage areas were determined for each of the green infrastructure practices proposed at the site. These green infrastructure practices were designed to manage the 2-year design storm, enabling these practices to capture 95% of the annual rainfall. Runoff volumes were calculated for each proposed green infrastructure practice. The reduction in TSS loading was calculated for each drainage area for each proposed green infrastructure practice using the aerial loading coefficients in Table 1. The maximum volume reduction in stormwater runoff for each green infrastructure practice for a storm was determined by calculating the volume of runoff captured from the 2-year design storm. For each green infrastructure practice, peak discharge reduction potential was determined through hydrologic modeling in HydroCAD. For each green infrastructure practice, a cost estimate is provided. These costs are based upon the square footage of the green infrastructure practice and the real cost of green infrastructure practice implementation in New Jersey. 6

Table 1: Aerial Loading Coefficients 2 Land Cover TP load (lbs/acre/yr) TN load (lbs/acre/yr) TSS load (lbs/acre/yr) High, Medium Density Residential 1.4 15 140 Low Density, Rural Residential 0.6 5 100 Commercial 2.1 22 200 Industrial 1.5 16 200 Urban, Mixed Urban, Other Urban 1.0 10 120 Agriculture 1.3 10 300 Forest, Water, Wetlands 0.1 3 40 Barrenland/Transitional Area 0.5 5 60 2 New Jersey Department of Environmental Protection (NJDEP), Stormwater Best Management Practice Manual, 2004. 7

Green Infrastructure Practices Green infrastructure is an approach to stormwater management that is cost-effective, sustainable, and environmentally friendly. Green infrastructure projects capture, filter, absorb, and reuse stormwater to maintain or mimic natural systems and to treat runoff as a resource. As a general principal, green infrastructure practices use soil and vegetation to recycle stormwater runoff through infiltration and evapotranspiration. When used as components of a stormwater management system, green infrastructure practices such as bioretention, green roofs, porous pavement, rain gardens, and vegetated swales can produce a variety of environmental benefits. In addition to effectively retaining and infiltrating rainfall, these practices can simultaneously help filter air pollutants, reduce energy demands, mitigate urban heat islands, and sequester carbon while also providing communities with aesthetic and natural resource benefits 3. A wide range of green infrastructure practices have been evaluated for the potential project sites in Newark. Each practice is discussed below. Disconnected downspouts This is often referred to as simple disconnection. A downspout is simply disconnected, prevented from draining directly to the roadway or storm sewer system, and directed to discharge water to a pervious area (i.e., lawn). Pervious pavements There are several types of permeable pavement systems including porous asphalt, pervious concrete, permeable pavers, and grass pavers. These surfaces are hard and support vehicle traffic but also allow water to infiltrate through the surface. They have an underlying stone layer to store stormwater runoff and allow it to slowly seep into the ground. 3 United States Environmental Protection Agency (USEPA), 2013. Watershed Assessment, Tracking, and Environmental Results, New Jersey Water Quality Assessment Report. http://ofmpub.epa.gov/waters10/attains_state.control?p_state=nj 8

Bioretention systems/rain gardens These are landscaped features that are designed to capture, treat, and infiltrate stormwater runoff. These systems can easily be incorporated into existing landscapes, improving aesthetics and creating wildlife habitat while managing stormwater runoff. Bioretention systems also can be used in soils that do not quickly infiltrate by incorporating an underdrain into the system. Downspout planter boxes These are wooden boxes with plants installed at the base of a downspout that provide an opportunity to beneficially reuse rooftop runoff. Rainwater harvesting systems (cistern or rain barrel) These systems capture rainwater, mainly from rooftops, in cisterns or rain barrels. The water can then be used for watering gardens, washing vehicles, or for other non-potable uses. Bioswale Bioswales are landscape features that convey stormwater from one location to another while removing pollutants and providing water an opportunity to infiltrate. 9

Stormwater planters Stormwater planters are vegetated structures that are built into the sidewalk to intercept stormwater runoff from the roadway or sidewalk. Many of these planters are designed to allow the water to infiltrate into the ground while others are designed simply to filter the water and convey it back into the stormwater sewer system. Tree filter boxes These are pre-manufactured concrete boxes that contain a special soil mix and are planted with a tree or shrub. They filter stormwater runoff but provide little storage capacity. They are typically designed to quickly filter stormwater and then discharge it to the local sewer system. Potential Project Sites Appendix A contains information on potential project sites where green infrastructure practices could be installed as well as information on existing site conditions. The recommended green infrastructure practices and the drainage area that the green infrastructure practices can treat are identified for each potential project site. For each practice, the recharge potential, TSS removal potential, maximum volume reduction potential per storm, the peak reduction potential, and estimated costs are provided. This information is also provided so that proposed development projects that cannot satisfy the New Jersey stormwater management requirements for major development can use one of the identified projects to offset a stormwater management deficit. 4 4 New Jersey Administrative Code, N.J.A.C. 7:8, Stormwater Management, Statutory Authority: N.J.S.A. 12:5-3, 13:1D-1 et seq., 13:9A-1 et seq., 13:19-1 et seq., 40:55D-93 to 99, 58:4-1 et seq., 58:10A-1 et seq., 58:11A-1 et seq. and 58:16A-50 et seq., Date last amended: April 19, 2010. 10

Conclusion This impervious cover reduction action plan is meant to provide the municipality with a blueprint for implementing green infrastructure practices that will reduce the impact of stormwater runoff from impervious surfaces. These projects can be implemented by a wide variety of people such as boy scouts, girl scouts, school groups, faith-based groups, social groups, watershed groups, and other community groups. Additionally, development projects that are in need of providing off-site compensation for stormwater impacts can use the projects in this plan as a starting point. The municipality can quickly convert this impervious cover reduction action plan into a stormwater mitigation plan and incorporate it into the municipal stormwater control ordinance. 11

Appendix A: Climate Resilient Green Infrastructure a. Green Infrastructure Sites

SITES WITHIN THE ELIZABETH RIVER SUBWATERSHED 1. 67 Goodwin Avenue Community Garden 2. Al Maidah Natural Community Garden 3. HOV Community Garden 4. Vailsburg Park SITES WITHIN LOWER PASSAIC RIVER SUBWATERSHED 5. 298 Sussex Avenue Community Garden 6. Garden of Worker Bees 7. Sussex Avenue Elementary School 8. The Garden of Hope 9. The People's Garden SITES WITHIN THE NEWARK AIRPORT PERIPHERAL DITCH SUBWATERSHED 10. 40 1/2 Elizabeth Avenue Community Garden 11. Clinton Avenue and Badger Avenue Traffic Triangle 12. Greater Newark Conservancy 13. Malcolm X Shabazz High School 14. Pocket Park 15. Science & Sustainability Community Garden 16. Ujmiaa Community Garden 17. West Side Park

b. Proposed Green Infrastructure Concepts

67 Goodwin Avenue Community Garden Subwatershed: Site Area: Address: Block and Lot: Elizabeth River 2,423 sq. ft. 67 Goodwin Avenue Newark, NJ 07112 Block 3620, Lot 4 A rain garden was installed to capture runoff from the sidewalk and any flooding from the grass area. A section of porous pavement was installed to replace the concrete sidewalk to capture and infiltrate stormwater. Two rain barrels were installed to capture the rooftop runoff from the adjacent building, which can be used to water the rain garden. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 55 1,333 0.1 0.7 6.1 0.001 0.04 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 0.026 4 1,975 0.07 250 $1,250 Pervious pavement 0.073 12 5,558 0.21 595 $14,875 Rainwater harvesting 0.005 1 110 0.01 110 (gal) $220

Al Maidah Natural Community Garden Subwatershed: Site Area: Address: Block and Lot: Elizabeth River 3,844 sq. ft. 49 Lyons Avenue Newark, NJ 07112 Block 3647, Lot 5 Two cisterns were installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 45 1,730 0.1 0.9 7.9 0.001 0.05 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.004 1 299 0.01 600 (gal) $1,200

HOV Community Garden Subwatershed: Site Area: Address: Block and Lot: Elizabeth River 3,752 sq. ft. 69 Norwood Street Newark, NJ 07107 Block 4066, Lot 60 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 45 1,689 0.1 0.9 7.8 0.001 0.05 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.018 3 600.02 600 (gal) $1,200

Vailsburg Park Subwatershed: Site Area: Address: Block and Lot: Elizabeth River 2,551,050 sq. ft. 112 South Munn Avenue Newark, NJ 07106 Block 4020, Lot 1 A rain garden was installed to capture, treat, and infiltrate runoff from the road, and serve as a green infrastructure demonstration project. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 43 1,084,200 52.3 547.6 4,978.0 0.845 29.74 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 0.042 7 3,157 0.14 400 $2,000

298 Sussex Avenue Community Garden Subwatershed: Site Area: Address: Block and Lot: Lower Passaic River 4,737 sq. ft. 298 Sussex Avenue Newark, NJ 07107 Block 1878, Lot 3 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 75 3,553 0.2 1.8 16.3 0.003 0.10 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.009 2 688 0.03 1,550 (gal) $3,100

Garden of Worker Bees Subwatershed: Site Area: Address: Block and Lot: Lower Passaic River 3,574 sq. ft. 179 Broadway Newark, NJ 07104 Block 441, Lot 59,60, 63 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 95 3,395 0.2 1.7 15.6 0.003 0.09 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.018 3 800 0.03 800 (gal) $1,600

Sussex Avenue Elementary School Subwatershed: Site Area: Address: Block and Lot: Lower Passaic River 62,388 sq. ft. 307 Sussex Avenue Newark, NJ 07107 Block 1885, Lot 32 A rain garden was installed to capture, treat, and infiltrate the stormwater runoff from the surrounding paved playground area. garden also serves as a green infrastructure demonstration project for the students. The Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 95 59,268 2.9 29.9 272.1 0.046 1.63 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 0.031 5 2,371 0.10 300 $1,500

The Garden of Hope Subwatershed: Site Area: Address: Block and Lot: Lower Passaic River 5,192 sq. ft. 3-5 Fairmount Avenue Newark, NJ 07107 Block 1843, Lot 5,7 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 90 4,673 0.2 2.4 21.5 0.004 0.13 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.018 3 600 0.06 600 (gal) $1,200

40½ Elizabeth Avenue Community Garden Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 1,477 sq. ft. 40½ Elizabeth Avenue Newark, NJ 07108 Block 2801, Lot 54 Rain barrels were installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 40 591 0.0 0.3 2.7 0.000 0.02 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.005 1 135 0.02 135 (gal) $270

Clinton Avenue and Badger Avenue Traffic Triangle Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 847 sq. ft. Clinton Avenue Newark, NJ 07108 Block 2682, Lot 1 The traffic triangle was replaced with porous pavers, pervious concrete, and stormwater planters to capture, treat, and infiltrate stormwater from Clinton Avenue and Badger Avenue. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 85 720 0.0 0.4 3.3 0.001 0.02 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Pervious pavement 0.042 7 3,216 0.14 1,000 $25,000 Stormwater planter 0.168 28 12,716 0.56 1,145 $429,375

Greater Newark Conservancy Subwatershed: Site Area: Address: Newark Airport Peripheral Ditch 44,945 sq. ft. 32 Prince Street Newark, NJ 07103 Block and Lot: Block 235, Lot 21, 22, 25, 38, 40, 41, 42, 43, 44, 45, 46, 47 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 80 35,956 1.7 18.2 165.1 0.028 0.99 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.025 4 650 0.08 650 (gal) $1,300

Malcom X Shabazz High School Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 1,395,857 sq. ft. 80 Johnson Avenue Newark, NJ 07108 Block 2696, Lot 1 A rain barrel was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. A rain garden was installed next to the cistern to also capture, treat, and infiltrate roof runoff and overflow from the system. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 80 1,116,686 53.8 564.0 5,127.1 0.870 30.63 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 185 $925 0.008 1 590 0.03 Rainwater harvesting 500 (gal) $1,000

Pocket Park Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 2,217 sq. ft. 35 Murray Street Newark, NJ 07114 Block 2811, Lot 9 A rain garden was installed to capture, treat, and infiltrate stormwater runoff from the parking lot. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 75 1,663 0.1 0.8 7.6 0.001 0.05 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 0.021 3 1,578 0.07 200 $1,000

Science & Sustainability Community Garden Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 3,694sq. ft. 483 Washington Street Newark, NJ 07102 Block 121, Lot 36,37 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 95 3,509 0.2 1.8 16.1 0.003 0.10 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.026 4 800 0.09 800 (gal) $1,600

The People s Garden Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 5,035 sq. ft. 86 Garside Avenue Newark, NJ 07104 Block 490, Lot 48.02, 72 A cistern was installed to collect rainwater from a neighboring building. The captured rainwater can be used for watering the garden or other non-potable purposes. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 55 2,769 0.1 1.4 12.7 0.002 0.08 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Rainwater harvesting 0.031 5 1,000 0.10 1,000 (gal) $2,000

Ujmiaa Community Garden Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 13,532 sq. ft. 300 Morris Avenue Newark, NJ 07103 Block 246, Lot 7,8, 9,10 A rain garden was installed to capture, treat, and infiltrate runoff from an adjacent parking lot. A cistern was installed to collect rooftop runoff from the building to the south. The captured rainwater can be used to water the garden or for other non-potable uses. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 34 4,552 0.2 2.3 20.9 0.004 0.12 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 0.052 9 3,949 0.17 500 $2,500 Rainwater harvesting 0.065 11 800 0.04 800 (gal) $1,600

West Side Park Subwatershed: Site Area: Address: Block and Lot: Newark Airport Peripheral Ditch 2,729,922 sq. ft. 600 South 17 th Street Newark, NJ 07103 Block 324, Lot 1 A rain garden was installed to capture, treat, and infiltrate rooftop runoff. Impervious Cover Existing Loads from Impervious Cover (lbs/yr) Runoff Volume from Impervious Cover (Mgal) % sq. ft. TP TN TSS For the 1.25" Water Quality Storm For an Annual Rainfall of 44" 50 1,364,958 65.8 689.4 6,267.0 1.064 37.44 Recommended Green Infrastructure Practices Recharge Potential (Mgal/yr) TSS Removal Potential (lbs/yr) Maximum Volume (gal/storm) Peak Discharge (cu. ft./second) Size (sq. ft.) Cost Bioretention system 0.020 3 1,481 0.07 200 $1,000

c. Summary of Existing Conditions

Runoff Volumes from I.C. Runoff Volumes from I.C. Existing Annual Loads (Commercial) I.C. Water Quality Storm Water Quality Storm Subwatershed/Site Name/Total Site Info/GI Practice Area Area Block Lot I.C. Area TP TN TSS (1.25" over 2-hours) Annual (1.25" over 2-hours) Annual (ac) (SF) % (SF) (lb/yr) (lb/yr) (lb/yr) (cu.ft.) (cu.ft.) (Mgal) (Mgal) ELIZABETH RIVER SUBWATERSHED 58.79 2,561,070 43 1,088,951 52.5 550.0 4999.8 113432 3992821 0.848 29.87 1 67 Goodwin Avenue Community Garden Total Site Info 0.06 2,423 3620 4 55 1,333 0.1 0.7 6.1 139 4,887 0.001 0.04 2 Al Maidah Natural Community Garden Total Site Info 0.09 3,844 3647 5 45 1,730 0.1 0.9 7.9 180 6,342 0.001 0.05 3 HOV Community Garden Total Site Info 0.09 3,752 4066 60 45 1,689 0.1 0.9 7.8 176 6,191 0.001 0.05 4 Vailsburg Park Total Site Info 58.56 2,551,050 4020 1 43 1,084,200 52.3 547.6 4,978.0 112,938 3,975,400 0.845 29.74 LOWER PASSAIC RIVER SUBWATERSHED 1.86 80,926 91 73,659 3.6 37.2 338.2 7673 270083 0.057 2.02 5 298 Sussex Avenue Community Garden Total Site Info 0.11 4,737 1878 3 75 3,553 0.2 1.8 16.3 370 13,027 0.003 0.10 6 Garden of Worker Bees Total Site Info 0.08 3,574 441 59,60,63 95 3,395 0.2 1.7 15.6 354 12,450 0.003 0.09 7 Sussex Avenue Elementary School Total Site Info 1.43 62,388 1885 32 95 59,268 2.9 29.9 272.1 6,174 217,317 0.046 1.63 8 The Garden of Hope Total Site Info 0.12 5,192 1843 5,7 90 4,673 0.2 2.4 21.5 487 17,135 0.004 0.13 9 The People's Garden Total Site Info 0.12 5,035 490 48.02,72 55 2,769 0.1 1.4 12.7 288 10,154 0.002 0.08 NEWARK AIRPORT PERIPHERAL DITCH 96.25 4,192,492 60 2,528,636 121.9 1277.1 11609.9 263400 9271664 1.970 69.35 10 40 1/2 Elizabeth Avenue Community Garden Total Site Info 0.03 1,477 2801 54 40 591 0.0 0.3 2.7 62 2,166 0.000 0.02 11 Clinton Avenue and Badger Avenue Traffic Triangle Total Site Info 0.02 847 2682 1 85 720 0.0 0.4 3.3 75 2,640 0.001 0.02 12 Greater Newark Conservancy Total Site Info 1.03 44,945 235 21,22,25,38,40,41,42,43,44,45,46,47 80 35,956 1.7 18.2 165.1 3,745 131,840 0.028 0.99 13 Malcom X Shabazz High School Total Site Info 32.04 1,395,857 2696 1 80 1,116,686 53.8 564.0 5,127.1 116,321 4,094,515 0.870 30.63 14 Pocket Park Total Site Info 0.05 2,217 2811 9 75 1,663 0.1 0.8 7.6 173 6,098 0.001 0.05 15 Science & Sustainability Community Garden Total Site Info 0.08 3,694 121 36,37 95 3,509 0.2 1.8 16.1 366 12,867 0.003 0.10 16 Ujmiaa Community Garden Total Site Info 0.31 13,532 246 7,8,9,10 34 4,552 0.2 2.3 20.9 474 16,692 0.004 0.12

d. Summary of Proposed Green Infrastructure Practices

Summary of Proposed Green Infrastructure Practices Potential Management Area Max Volume Peak Discharge Recharge TSS Removal Reduction Reduction Size of Unit Total I.C. Subwatershed/Site Name/Total Site Info/GI Practice Area Area Potential Potential Potential Potential BMP Cost Unit Cost Treated (SF) (ac) (Mgal/yr) (lbs/yr) (gal/storm) (cfs) ($/unit) ($) % ELIZABETH RIVER SUBWATERSHED 6,465 0.15 0.168 28 11698 0.46 $20,745 0.6% 1 67 Goodwin Avenue Community Garden Bioretention system 1,000 0.02 0.026 4 1,975 0.07 250 $5 SF $1,250 75.0% Pervious pavement 2,815 0.06 0.073 12 5,558 0.21 595 $25 SF $14,875 211.2% Rainwater harvesting 200 0.00 0.005 1 110 0.01 110 $2 gal $220 15.0% Total Site Info 4,015 0.09 0.105 18 7,642 0.29 $16,345 301.2% 2 Al Maidah Natural Community Garden Rainwater harvesting 150 0.00 0.004 1 299 0.01 600 $2 gal $1,200 8.7% Total Site Info 150 0.00 0.004 1 299 0.01 $1,200 8.7% 3 HOV Community Garden Rainwater harvesting 700 0.02 0.018 3 600 0.02 600 $2 gal $1,200 41.5% Total Site Info 700 0.02 0.018 3 600 0.02 $1,200 41.5% 4 Vailsburg Park Bioretention system 1,600 0.04 0.042 7 3,157 0.14 400 $5 SF $2,000 0.1% Total Site Info 1,600 0.04 0.042 7 3,157 0.14 $2,000 0.1% LOWER PASSAIC RIVER SUBWATERSHED 4,150 0.10 0.108 18 5459 0.28 $5,901 5.6% 5 298 Sussex Avenue Community Garden Rainwater harvesting 350 0.01 0.009 2 688 0.03 1,550 $2 gal $3,100 9.9% Total Site Info 350 0.01 0.009 2 688 0.03 $3,100 9.9% 6 Garden of Worker Bees Rainwater harvesting 700 0.02 0.018 3 800 0.03 800 $2 gal $1,600 20.6% Total Site Info 700 0.02 0.018 3 800 0.03 $1,600 20.6% 7 Sussex Avenue Elementary School Bioretention system 1,200 0.03 0.031 5 2,371 0.10 300 $5 SF $1,500 2.0% Total Site Info 1,200 0.03 0.031 5 2,371 0.10 $1,500 2.0% 8 The Garden of Hope Rainwater harvesting 700 0.02 0.018 3 600 0.02 600 $2 gal $1,200 15.0% Total Site Info 700 0.02 0.018 3 600 0.02 $1,200 15.0% 9 The People's Garden Rainwater harvesting 1,200 0.03 0.031 5 1,000 0.10 1,000 $2 gal $2,000 43.3% Total Site Info 1,200 0.03 0.031 5 1,000 0.10 $2,000 43.3% NEWARK AIRPORT PERIPHERAL DITCH 16,570 0.38 0.432 72 25916 1.16 $464,645 0.7% 10 40 1/2 Elizabeth Avenue Community Garden Rainwater harvesting 175 0.00 0.005 1 135 0.01 135 $2 gal $270 29.6% Total Site Info 175 0.00 0.005 1 135 0.01 $270 29.6% 1

Summary of Proposed Green Infrastructure Practices Potential Management Area Max Volume Peak Discharge Recharge TSS Removal Reduction Reduction Size of Unit Total I.C. Subwatershed/Site Name/Total Site Info/GI Practice Area Area Potential Potential Potential Potential BMP Cost Unit Cost Treated (SF) (ac) (Mgal/yr) (lbs/yr) (gal/storm) (cfs) ($/unit) ($) % 11 Clinton Avenue and Badger Avenue Traffic Triangle Pervious pavement 1,630 0.04 0.042 7 3,216 0.14 1,000 $25 SF $25,000 226.4% Stormwater planter 6,440 0.15 0.168 28 12,716 0.56 1,145 $375 SF $429,375 894.6% Total Site Info 8,070 0.19 0.210 35 15,932 0.70 $454,375 1121.0% 12 Greater Newark Conservancy Rainwater harvesting 975 0.02 0.025 4 650 0.03 650 $2 gal $1,300 2.7% Total Site Info 975 0.02 0.025 4 650 0.03 $1,300 2.7% 13 Malcom X Shabazz High School Bioretention system 185 $5 SF $925 Rainwater harvesting 300 0.01 0.008 1 590 0.03 500 $2 gal $1,000 0.0% Total Site Info 300 0.01 0.008 1 590 0.03 $1,000 0.0% 14 Pocket Park Bioretention system 800 0.02 0.021 3 1,578 0.07 200 $5 SF $1,000 48.1% Total Site Info 800 0.02 0.021 3 1,578 0.07 $1,000 48.1% 15 Science & Sustainability Community Garden Rainwater harvesting 1,000 0.02 0.026 4 800 0.04 800 $2 gal $1,600 28.5% Total Site Info 1,000 0.02 0.026 4 800 0.04 $1,600 28.5% 16 Ujmiaa Community Garden Bioretention system 2,000 0.05 0.052 9 3,949 0.17 500 $5 SF $2,500 43.9% Rainwater harvesting 2,500 0.06 0.065 11 800 0.04 800 $2 gal $1,600 54.9% Total Site Info 4,500 0.10 0.117 20 4,749 0.21 $4,100 98.8% 17 West Side Park Bioretention system 750 0.02 0.020 3 1,481 0.07 200 $5 SF $1,000 0.1% Total Site Info 750 0.02 0.020 3 1,481 0.07 $1,000 0.1% 2