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Reducing stormwater pollution in our neighborhoods is an activity everyone can take part in. Urbanization has fundamentally altered the way that water moves through the landscape. Stormwater that doesn’t soak into the ground runs along streets and parking lots and picks up pollutants. Much of the pollution in our nation’s waterways comes from everyday materials like fertilizers, pesticides, motor oil, trash and plastics, and household chemicals. Rainwater washes these substances from streets, yards, and driveways into storm drains. It’s a common misconception that storm drains lead to wastewater treatment plants. In actuality, storm drains rarely lead to treatment plants and, instead, untreated water is carried directly to the nearest waterway. This polluted runoff can have negative impacts on water quality, overstimulate algal growth (both toxic and non-toxic), harm aquatic species and wildlife, and cause trash and debris to enter our lakes, streams, rivers, and oceans. Storm Drain Cleaning Keeping neighborhood storm drains cleaned is a simple activity with big impacts. Removing debris that collects in nearby stormwater catch basins, storm drains, and along curbs promotes cleaner runoff, reduces the potential for flooding, and decreases the amount of pollution and trash entering our waterways. 5 Simple DIY Steps for Storm Drain Cleaning: Rake/sweep and discard debris that has collected on top of the storm grate and in curbside rain gutters. Please note: If you notice a major blockage or issue with a storm drain, contact your local municipality immediately. Use a scrub brush or toilet bowl scrubber to remove debris that may be stuck to the storm grate. Adopt a storm drain(s) and maintain a regular cleaning schedule: Make a note on your calendar each quarter to clean and clear debris from storm drains nearby your home or workplace. And, make a habit of checking your storm drains after rainstorms when clogging is most common. Host a community clean-up day that includes trash pick-up, storm drain cleaning, and disseminating information on the impacts of stormwater runoff and what we can do to help. Consider contacting your local watershed association or municipality about getting drain markers installed on storm drains throughout the community. The markers act as a continued public reminder that anything dumped into a storm drain eventually ends up in our precious waterways downstream. World Water Day 2023 asks people to “Be the change you want to see in the world." Your actions can help solve the water crisis. Remember: small actions lead to big achievements in protecting water quality. [post_title] => Celebrate World Water Day with this 5-Step DIY Activity [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => celebrate-world-water-day-2023 [to_ping] => [pinged] => [post_modified] => 2023-03-21 13:41:54 [post_modified_gmt] => 2023-03-21 13:41:54 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=12456 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [1] => WP_Post Object ( [ID] => 11558 [post_author] => 1 [post_date] => 2022-12-20 05:17:55 [post_date_gmt] => 2022-12-20 05:17:55 [post_content] => When New Jersey Manufacturers Insurance Group (NJM) developed their new Regional Operations Facility, a 55-acre corporate campus in Hammonton, New Jersey, they approached the construction with one major goal at the forefront: stormwater management. Fundamental to that goal was designing a green infrastructure stormwater management system capable of containing on site nearly all the stormwater runoff generated by storm events up to and including a 100-year frequency, 24-hour duration storm. The group hired Princeton Hydro, recognized as a leader in innovative, cost-effective, and environmentally sound stormwater management, to develop a concept plan that could be built within the context of proper stormwater management and meet the stringent requirements of the NJ Pinelands Comprehensive Management Plan. To accomplish the ambitious stormwater management goals, the project team designed and implemented an integrated stormwater management system that combined traditional and green infrastructure components, and consisted of bioinfiltration basins, parking lot islands, a wetland basin, and a bioretention island. These features were designed to promote the interception, evapotranspiration, and infiltration of stormwater runoff at its source. Emphasis was given to green infrastructure BMPs specifically capable of treating and infiltrating large volumes of runoff. Thus, all of the infiltration areas were designed using a soil amendment process where the underlying soils were excavated and amended with organic material to improve the underlying recharge capabilities of the soils. To complement the BMPs, the team designed and installed 120,000 gallon below-grade rainwater capture and reuse system. The system captures roof runoff to be used for on-site irrigation, which not only reduces stormwater volume but also decreases the facility’s water usage. The project is one of the first projects in New Jersey built to infiltrate nearly 100% of the on-site runoff and uses site-design-based stormwater capacity to determine allowable impervious cover. [gallery link="none" ids="11591,11590,11592"] Before construction began, the team implemented a comprehensive study, which began with a detailed analysis of the site’s soils, with particular attention given to physical properties of the soil and the depth to seasonal high water (groundwater). During construction, Princeton Hydro provided monitoring services for all earthwork activities. Our team was on site full-time during critical activities to ensure that the project was built in accordance with the intent of the original design and ensure the maintenance of the project schedule. The team also provided environmental and geotechnical design and engineering services throughout the corporate campus construction, including the analysis of subsurface structures shop drawings and providing consultation support to the general contractor. For the project, we partnered with Burgis Associates, Inc. who created site designs, provided landscape architectural and professional planning services, and helped to obtain agency approvals. The landscape program sought to establish native plant communities that filter runoff, provide an aesthetically pleasing visual, reduce invasive species, create habitat for pollinators and other critical species, and require limited maintenance to stay healthy and flourishing. Post construction, the Princeton Hydro team led the preparation of the scope of services, budget, and proposal for the Stormwater Basin Maintenance, which included mowing and clearing the vegetation in nine infiltration basins. The basins were inspected monthly for functionality and for the presence of invasive plants. And, we are happy to report that the basins are all working properly and invasive plants have been eradicated. At Princeton Hydro, we are experts in stormwater management; we recognize the numerous benefits of green infrastructure; and we’ve been incorporating green infrastructure into our engineering designs since before the term was regularly used in the stormwater lexicon. Click below to read about a Stormwater Treatment Train we designed and implemented in Thompson Park, a 675-acre recreation area in Middlesex County, New Jersey. [post_title] => Designing a Stormwater Management System for a 55-Acre Corporate Campus [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => designing-a-stormwater-management-system-for-a-55-acre-corporate-campus [to_ping] => [pinged] => [post_modified] => 2022-12-20 23:39:23 [post_modified_gmt] => 2022-12-20 23:39:23 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=11558 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [2] => WP_Post Object ( [ID] => 11837 [post_author] => 1 [post_date] => 2022-11-23 19:13:46 [post_date_gmt] => 2022-11-23 19:13:46 [post_content] => The Metedeconk River flows through over 40 miles of New Jersey's woodlands, freshwater wetlands, forested wetlands, tidal wetlands, and densely developed areas before emptying into the Barnegat Bay. The river and its watershed provide drinking water from ground and surface water sources to about 100,000 homes in Ocean and Monmouth Counties. A tributary to the North Branch of the Metedeconk River that flows directly through Ocean County Park in Lakewood, NJ. This tributary was deemed to have water quality impairments, including fecal coliform due to the Canada Goose population and high temperature due to the exposed stream channels, which lack a significant tree-canopy. The increasing amounts of impervious land cover associated with the continued urbanization of the Metedeconk River’s Watershed was also a primary cause of water quality impairments. American Littoral Society (ALS) partnered with Princeton Hydro and local stakeholders to implement green infrastructure projects with the goal of remedying the fecal coliform and water temperature impairments in the Park's tributary as well as improving the overall health and water quality of the Metedeconk River, its surrounding watershed, and, ultimately, the greater Barnegat Bay. Green Infrastructure Design & Implementation Project The project team designed and implemented a stormwater treatment train, which combined multiple green infrastructure stormwater management best management practices (BMPs) that work in unison to decrease NPS pollutant loading to the Metedeconk River and increase ecological diversity in Ocean County Park. The project, which was funded by a New Jersey Department of Environmental Protection 2014 319(h) Implementation Grant, included four primary BMPs in Ocean County Park: 1. Installation of two Filterra curb-side tree boxes; 2. Construction of a vegetated bioretention/biofiltration swale; 3. Creation of a section of living shoreline along the banks of Duck Pond; and 4. Installation of two floating wetland islands in Duck Pond. Filterra curb-side tree boxes Built at street level, the Filterra™ tree box is a pre-manufactured, in-ground concrete box filled with soil media and planted with a native, noninvasive tree or shrub. It is designed to collect stormwater, absorb nutrients, and treat water before it discharges into surrounding waterbodies. For this project, two Filterra™ tree box units were installed in the parking lot to the north of Ocean County Park's swimming beach and each planted with serviceberry shrubs. The boxes serve to catch and treat stormwater runoff flowing from the parking lot. Vegetated Bioswale Unlike a traditional drainage basin that simply collects water, a vegetated bioswale uses native plants to reduce the volume of stormwater runoff, decrease total phosphorus loading, and prevent debris, sediment, and pollutants from flowing into the Metedeconk River and other surrounding waterbodies. For this project, the team designed and implemented a .07-acre bioswale adjacent to the park's main parking lot. Installation of the vegetated bioswale began by removing existing vegetation, excavating the ground north of the parking lot, and then regrading it per the specifications on the plans. Once proper grading was established, the basin was planted with native species including Joe Pye Weed, Blue Mistflower, Jacob Cline Bee Balm, Orange Coneflower, and Wrinkleleaf Goldenrod. Living Shoreline Along Duck Pond [caption id="attachment_11850" align="aligncenter" width="767"] Photo by American Littoral Society[/caption] Living shorelines use a variety of native plants to filter runoff, create and improve habitat for aquatic animals, increase water quality, and protect the shoreline from erosion. Two sections of bulkhead along the North and South edges of Ocean County Park's Duck Pond were removed so that the bank could be sloped naturally into the pond and populated with vegetation. The design serves as an additional point of stormwater collection and filtration, significantly reducing the amount of water flowing into nearby paved parking areas. The northern portion of the living shoreline encompasses 0.06 acres and spans 100 feet along the shore. The southern portion encompasses 0.18 acres and spans 40 feet along the shore. The living shorelines were seeded and then planted with Green Bulrush, Helen’s Flower, Switchgrass, Blue Mistflower, New England Aster, Upright Sedge, and Little BlueStem. Floating Wetland Islands in Duck Pond A floating wetland island is made up of a plastic matrix that is planted with water-loving native vegetation. The matrix promotes the growth of a healthy microbial community. The biofilm that develops on the plants' roots and within the island matrix, contribute toward the uptake of nutrients within the waterbody thus improving water quality. Floating wetland islands are anticipated to remove an estimated 17.33 lbs of phosphorus and 566.67 lbs of nitrogen each year, as well as promote a balanced ecosystem through the promotion of “healthy” bacteria and plankton. Two 250-square-foot floating wetland islands made of polyethylene terephthalate layers were populated with native wetland plants and installed in Duck Pond. The plant pockets were then filled with a biomix of soil and peat, and a variety of native plant species were planted on both islands, including: Swamp Milkweed, Upright Sedge, Common Boneset, Crimson Eyed Rosemallow, and Blue Flag Iris. Volunteer Involvement & Community Education Given the magnitude of the project and the high-profile nature of Barnegat Bay, community education and outreach was an essential element of the project and its long-term success. Throughout the course of the project, efforts were made to increase public understanding of the project and to encourage public input in the design of the green infrastructure BMPs and the living shoreline. The education and outreach was a collaborative effort led by ALS, with support provided by the Ocean County Department of Parks and Recreation, Georgian Court University, Brick Municipal utilities Authority, NJDEP, and Princeton Hydro. The team conducted public presentations and meetings, installed educational signs to accompany the water quality improvement techniques that were implemented, created a website dedicated to providing project details and updates, and invited local residents to participate in shoreline restoration and floating wetland island planting efforts. Successful Outcome Following the project, in-situ and discrete water quality monitoring was conducted in stream in order to assess the effectiveness of the above BMPs. The combined green infrastructure and living shoreline elements of this project set the stage for a much needed effort to reduce nonpoint source pollution loading and address waterfowl-related pathogen impacts to Ocean County Park’s lakes and the Metedeconk River. It also heightened public awareness of nonpoint source pollution and the benefits of green infrastructure measures in the abatement of water quality problems. The project serves as a model for proper stormwater management and living shoreline creation throughout both the Metedeconk River and Barnegat Bay Watersheds. To learn more about Princeton Hydro’s robust natural resource management and restoration services, click here. Click here to read about another stormwater management green infrastructure project recently completed in Thompson Park, the largest developed park in the New Jersey's Middlesex County park system. [post_title] => Designing & Implementing Green Infrastructure in the Metedeconk River Watershed [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => designing-implementing-green-infrastructure-in-the-metedeconk-river-watershed [to_ping] => [pinged] => [post_modified] => 2022-12-02 15:20:03 [post_modified_gmt] => 2022-12-02 15:20:03 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=11837 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [3] => WP_Post Object ( [ID] => 11717 [post_author] => 1 [post_date] => 2022-10-26 17:09:16 [post_date_gmt] => 2022-10-26 17:09:16 [post_content] => Princeton Hydro led a stormwater management webinar during which participants learned about the purpose, management, and functionality of stormwater basins, and how to get involved in addressing stormwater management issues in their own communities. Dr. Clay Emerson, P.E., CFM and Mark Gallagher, the webinar instructors, provided examples of basins that could benefit most from a retrofit and step-by-step instructions on how to revitalize older basins to meet new stormwater standards and more effectively manage runoff. [embed]https://youtu.be/WRnSjGrHrog[/embed] The workshop, hosted by The Watershed Institute, is part of the Watershed Wednesdays webinar series, which explores a variety of topics related to protecting and improving water quality. The Watershed Institute, established in 1949, is a nonprofit organization located in Central New Jersey that promotes and advocates conservation and restoration of natural habitats, collects data on environmental conditions in its watersheds, and provides environmental education through numerous programs. To learn more about The Watershed Institute and other upcoming adult-education events, click here. At Princeton Hydro, we are experts in stormwater management; we recognize the numerous benefits of green infrastructure; and we’ve been incorporating green infrastructure into our engineering designs since before the term was regularly used in the stormwater lexicon. Click here to read about the on-call stormwater services and ongoing residential, commercial, and professional redevelopment projects we’re working on in Tredeffryin Township, Pennsylvania. [post_title] => WATCH: Understanding Stormwater Basins Near You [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => watch-understanding-stormwater-basins-near-you [to_ping] => [pinged] => [post_modified] => 2022-10-26 17:45:04 [post_modified_gmt] => 2022-10-26 17:45:04 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=11717 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [4] => WP_Post Object ( [ID] => 11506 [post_author] => 1 [post_date] => 2022-09-27 19:04:51 [post_date_gmt] => 2022-09-27 19:04:51 [post_content] => The Lion’s Gate Park and Urban Wetland Floodplain Creation Project has been chosen as a winner of the New Jersey Future “Smart Growth Awards” for 2022. The project transformed a densely developed, flood-prone, industrial site into a thriving public active recreation park with 4.2 acres of wetlands. As stated in the New Jersey Future award announcement, “The park is representative of smart growth values, with walkable trails in the middle of a residential area, a regenerated protected wetland which helps to mitigate flooding from storms like Hurricane Ida, and mixed-use opportunities for recreation. The dual roles of Lion Gate Park as both a source of resilience and recreation demonstrate a model of land use and planning that values the accessibility of public spaces while acknowledging and addressing the urgent need to adapt to the growing impacts of climate change in New Jersey.” The restoration project site is located in Bloomfield Township and includes 1,360 feet along the east bank of the Third River and 3,040 feet along the banks of the Spring Brook. These waterways are freshwater tributaries of the Passaic River and share a history of flooding above the site’s 100-year floodplain. The Third River, like many urban streams, tends to be the victim of excessive volume and is subjected to erosion and chronic, uncontrolled flooding. By removing a little over four acres of upland historic fill in this density developed area and restoring the natural floodplain connection, we significantly improved the land’s ecological value; enhanced the aquatic and wildlife habitat; increased flood storage capacity for urban stormwater runoff; replaced invasive plant species with thriving native wetland and riparian plant communities; and provided outdoor recreation accessibility to Bloomfield Township. [gallery columns="2" link="none" ids="4704,9172"] The Lion Gate Park project is the culmination of nearly two decades of collaborative work. The primary project team includes the Township of Bloomfield, NY/NJ Baykeeper, Bloomfield Third River Association, CME Associates, PPD Design, GK+A Architects, Enviroscapes, Strauss and Associates/Planners, and Princeton Hydro. The project recieved $1.76 million in funding from the New Jersey Freshwater Wetlands Mitigation Council and another several million dollars from NJDEP’s Office of Natural Resource Restoration. Princeton Hydro served as the ecological engineer to Bloomfield Township. Our scientists and engineers assisted in obtaining grants, collected background ecological data through field sampling and surveying, created a water budget, completed all necessary permitting, designed both the conceptual and final restoration plans, and conducted construction oversight throughout the project. Enviroscapes and Princeton Hydro are currently monitoring the site on behalf of the Township. [gallery link="none" columns="2" ids="4710,9319"] “Local residents are already benefiting from this floodplain creation project. During Tropical Storm Ida, the area held significant flood waters,” said Mark Gallagher, Vice President of Princeton Hydro. “This restoration project really exemplifies how a diverse group of public and private entities can work together to prioritize urban and underserved areas to mitigate flooding and create new open space. We’re honored to be recognized by NJ Future and selected as a winner of this important award.” [gallery link="none" columns="2" ids="9318,9294"] Since 2002, New Jersey Future has honored smart planning and redevelopment in New Jersey through its "Smart Growth Awards." The projects and plans chosen each year represent some of the best examples of sustainable growth and redevelopment in the state. For a complete list of 2022 Award Winners, click here. For more info on New Jersey Future, click here. To learn more about the Bloomfield restoration project and see drone images of it all coming together, click below: [visual-link-preview encoded="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"] [post_title] => Bloomfield's Lion’s Gate Park Restoration Wins 2022 Smart Growth Award [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => lion-gate-park-wins-smart-growth-award [to_ping] => [pinged] => [post_modified] => 2022-11-07 16:41:26 [post_modified_gmt] => 2022-11-07 16:41:26 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=11506 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [5] => WP_Post Object ( [ID] => 11289 [post_author] => 1 [post_date] => 2022-08-26 19:06:38 [post_date_gmt] => 2022-08-26 19:06:38 [post_content] => The New Jersey Department of Environmental Protection (NJDEP) launched a Youth Inclusion Initiative to help the State of New Jersey develop the next generation of environmental protection, conservation and stewardship leaders while also providing an avenue for young adults from open space-constrained communities to engage with nature as they provide valuable stewardship services to the public through jobs at NJDEP. This year, the youth inclusion program is partnering with Groundwork Elizabeth, Rutgers University Camden, and Newark’s Ironbound Community Corporation to create a workforce development curriculum for people ages 17 to 24. Groundwork Elizabeth sent 12 participants to this year’s program, and Rutgers Camden and the Ironbound Community Corporation each sent 10. [caption id="attachment_11299" align="aligncenter" width="771"] Photo by NJDEP[/caption] The curriculum provides career education in the environmental protection field and helps the young participants develop the skills necessary to pursue those career paths in New Jersey. Participants learn through classroom instruction and by working across sectors regulated by the NJDEP, including water resources, air quality, energy and sustainability, public lands management, and wildlife. Susan Lockwood of NJDEP’s Division of Land Resource Protection’s Mitigation Unit reached out to Princeton Hydro to showcase ecosystem restoration and mitigation efforts across the state as well as discuss the variety of career roles that make these projects possible. Our portion of the curriculum entailed each group of students visiting two sites to learn about the benefits of restoring a landscape with native vegetation. Our discussion explored different fields of work related to urban environmental restoration and water resource protection and the job responsibilities of environmental scientists, water resource engineers, geologists, ecologists, pesticide applicators, and regulatory compliance specialists. The Abbott Marshlands in Trenton, New Jersey [gallery link="none" ids="11287,11288,11281"] After a quick stop at NJDEP’s office in Trenton to learn about NJ invasive species, all three groups popped over to the Tulpehaking Nature Center in Mercer County’s John A. Roebling Park to see the restoration site in the Abbott Marshlands. The 3,000-acre Abbott Marshlands is the northernmost freshwater tidal marsh on the Delaware River and contains valuable habitat for many rare species like River Otter, American Eel, Bald Eagle, and various species of wading birds. Unfortunately, the area has experienced a significant amount of loss and degradation, partially due to the introduction of the invasive Common Reed (Phragmites australis). For Mercer County Park Commission, Princeton Hydro implemented a restoration plan to remove Common Reed and expose the native seed bank in 40-acres of the marsh to increase biodiversity, improve recreational opportunities, and enhance visitor experience. Students learned how to tell the difference between the invasive Common Reed vs. native Wild Rice (Zizania palustris L.). They utilized tools of the trade like field guides and binoculars to identify flora and fauna in the marsh. Learn more about this project. Mullica River Wetland Mitigation Site in Evesham, New Jersey [gallery link="none" ids="11343,11342,11282"] After visiting the Roebling site, students from Camden traveled down to Evesham Township in Burlington County to visit the Mullica River Wetland Mitigation Site. For this project, Princeton Hydro worked with GreenVest, LLC to restore a highly degraded 34-acre parcel of land which was previously used for cranberry cultivation. Through the implementation of restoration activities focused on removing the site’s agricultural infrastructure, Princeton Hydro and GreenVest were able to restore a natural wetland system on the site and over 1,600 linear feet of stream, providing forested, scrub-shrub, and emergent wetlands, forested uplands, headwater stream and riparian buffer, and critical wildlife habitat. The project also significantly uplifted threatened and endangered species habitats including Timber Rattlesnake. Susan Lockwood of NJDEP, Owen McEnroe of GreenVest, and Dana Patterson of Princeton Hydro, lead the group of 10 students. They learned the difference between restoration and mitigation and got to experience the remoteness of Pinelands habitat. Walking through the site, we shared how the dam and dike removal helped to restore the river back to its natural free-flowing state and the numerous resulting environmental benefits.The site was chosen for the Camden students in order to demonstrate that successful mitigation and restoration projects happen throughout the State and not far from urban centers like Camden. Learn more about this project. 3. Third River Floodplain Wetland Enhancement Project in Bloomfield, New Jersey [gallery link="none" ids="11344,11279,11277"] After visiting the Roebling site, students from Newark and Elizabeth trekked up to Essex County to visit an urban wetland creation project now known as Lion Gate Park. The once densely developed, abandoned Scientific Glass Factory in Bloomfield Township was transformed into a thriving public park with 4.2 acres of wetlands. Students heard the story of how this project came to be; decades of advocacy and litigation by community members and environmental nonprofits to stop redevelopment of the site into 148 townhomes. Bloomfield Township eventually secured the property to preserve as open space through a range of grants from NJDEP. Serving as the ecological engineer to Bloomfield Township, Princeton Hydro designed, permitted, and oversaw construction for the restoration project and is currently monitoring the site. The restoration work brought back to the land valuable ecological functions and natural floodplain connection, enhanced aquatic and wildlife habitat, and increased flood storage capacity for urban stormwater runoff. Learn more about this project. The NJDEP Youth Inclusion Initiative began on July 5 with a week of orientation classes, and continued through August with classroom and in-field learning. The initiative culminates on August 26 with a graduation and NJDEP Career Day, during which students will have the opportunity to meet with and discuss career options with various organizations tabling at the event, including Princeton Hydro. Click here to learn more about the NJDEP education program. If you’re interested in learning more about Princeton Hydro’s ecological restoration services, click here. [post_title] => Students from NJDEP's Youth Inclusion Initiative Tour Restored Landscapes with Princeton Hydro [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => njdep-youth-inclusion-initiative [to_ping] => [pinged] => [post_modified] => 2022-08-26 19:13:55 [post_modified_gmt] => 2022-08-26 19:13:55 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=11289 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [6] => WP_Post Object ( [ID] => 11118 [post_author] => 1 [post_date] => 2022-07-13 13:03:18 [post_date_gmt] => 2022-07-13 13:03:18 [post_content] => A green roof is a roof fully or partially covered in plants and waterproof media that helps reduce the volume and velocity of stormwater runoff from roofs by temporarily storing stormwater, slowing excess stormwater release, and promoting evaporation. Green roofs offer many benefits. They can help regulate a building’s internal temperature, which leads to heating and cooling energy savings; reduce stormwater runoff; mitigate the urban heat island effect; and increase biodiversity. From the planted rooftop of a building in Berwyn, Pennsylvania, we spoke with Philadelphia Green Roofs Principal and Owner Jeanne Weber, BSLA, GRP about the basics and benefits of green roofs for stormwater management. Click below to watch: [embed]https://youtu.be/aD-c7rFTci8[/embed] To learn more about green infrastructure and stormwater management, check out our blog: [post_title] => Green Roofs for Stormwater Management: Learning the Basics & Benefits from Philadelphia Green Roofs [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => green-roofs-for-stormwater-management-learning-the-basics-benefits-from-philadelphia-green-roofs [to_ping] => [pinged] => [post_modified] => 2022-07-13 13:03:18 [post_modified_gmt] => 2022-07-13 13:03:18 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=11118 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [7] => WP_Post Object ( [ID] => 10630 [post_author] => 1 [post_date] => 2022-05-06 12:15:24 [post_date_gmt] => 2022-05-06 12:15:24 [post_content] => In October 2021, the largest stream restoration in Maryland was completed. Over 7 miles (41,000 linear feet) of Tinkers Creek and its tributaries were stabilized and restored. The project was designed by Princeton Hydro for GV-Petro, a partnership between GreenVest and Petro Design Build Group. Working with Prince George’s County Department of the Environment and coordinating with the Maryland-National Capital Parks and Planning Commission, this full-delivery project was designed to meet the County’s Watershed Implementation Plan total maximum daily load (TMDL) requirements and its National Pollutant Discharge Elimination System Municipal Separate Storm Sewer System (MS4) Discharge Permit conditions. Today, we are thrilled to report that the once highly urbanized watershed is flourishing and teeming with life: [gallery columns="2" size="medium" link="none" ids="10632,10631"] We used nature-based design and bioengineering techniques like riparian zone planting and live staking to prevent erosion and restore wildlife habitat. [gallery columns="2" size="medium" ids="10635,10634"] 10,985 native trees and shrubs were planted in the riparian area, and 10,910 trees were planted as live stakes along the streambank. [gallery columns="2" size="medium" ids="10637,10636"] For more information about the project visit GreenVest's website and check out our blog: [post_title] => Revisiting Tinkers Creek Stream Restoration [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => revisiting-tinkers-creek-stream-restoration [to_ping] => [pinged] => [post_modified] => 2022-05-06 16:15:35 [post_modified_gmt] => 2022-05-06 16:15:35 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=10630 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [8] => WP_Post Object ( [ID] => 10522 [post_author] => 1 [post_date] => 2022-03-28 21:25:01 [post_date_gmt] => 2022-03-28 21:25:01 [post_content] => The NJ Department of Environmental Protection (NJDEP) hosted its 3rd Annual Harmful Algal Bloom (HAB) Summit! The all-day, virtual seminar included expert presentations and facilitated open-forum discussions related to HAB science, monitoring, response, management, treatment and communication. Approximately 220 people from around the country participated in the virtual summit, which was free and open to the public. The audience of stakeholders included government officials (local, state, federal); lake and other environmental commissions; watershed associations; environmental nonprofits; businesses; academics; lake management and HAB treatment experts; and folks interested in protecting their community lakes. Participants heard presentations about “Keeping Your Pets Safe from HABs,” “The Benefit of Riparian Buffers;” and “Stormwater Management and the Use of Green Infrastructure.” Additionally, two members of the NJDEP HAB Expert Team - Dr. Fred Lubnow Director and Dr. Meiyin Wu - gave a presentation on best management practices to prevent, mitigate, and/or control HABs. The 10-person expert team was established as part of Governor Phil Murphy’s plan to enhance scientific expertise around water quality management and bolster the State’s response to HABs. The Governor’s HABs Initiative was launched in 2019 after lakes throughout NJ (and the entire Continental U.S.) suffered from HAB outbreaks, which caused local and county health agencies to close off all beaches and issue advisories. These unprecedented conditions had significant negative impacts on lake-related ecological, recreational, and economic resources. The Governor’s initiative designated $13 million in funding to local communities for HABs reduction/prevention; established the aforementioned HABs expert team; and coordinated annual HABs summits in order to encourage continued community education and discussion. If you were unable to attend the 2022 HAB Summit, NJDEP has made the complete morning and afternoon sessions available online: Watch the Morning Session: [embed]https://www.youtube.com/watch?v=3KzeIP4FY60[/embed] Watch the Afternoon Session: [embed]https://www.youtube.com/watch?v=vSfJXhcaPCo[/embed] The NJDEP Division of Water Monitoring and Standards has an entire website dedicated to HABs. Click here to access educational fact sheets, stay informed on HAB alerts and advisories, and report a HAB sighting. For more information about HABs, watch a live interview with Dr. Fred Lubnow on Jersey Matters during which he discusses what steps should be taken to prevent HABs, and check out our recent blog: [embed]https://princetonhydro.com/lake-latonka-management-plan/[/embed] [post_title] => WATCH: NJDEP's 2022 Harmful Algal Bloom Virtual Summit [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => njdep-hab-summit-2022 [to_ping] => [pinged] => [post_modified] => 2022-04-06 19:12:40 [post_modified_gmt] => 2022-04-06 19:12:40 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=10522 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [9] => WP_Post Object ( [ID] => 10131 [post_author] => 1 [post_date] => 2022-01-24 02:25:00 [post_date_gmt] => 2022-01-24 02:25:00 [post_content] => This year marks the 50th anniversary of the Clean Water Act. In celebration, The Watershed Institute launched its “Watershed Wednesdays” webinar series, which explores a variety of topics related to the environmental laws that arose after the Clean Water Act was instated. The webinars are free, open to the public and occur on the 3rd Wednesday of each month between 6 - 7:15pm EST. To kick-off the Watershed Wednesdays series, three experts from the Princeton Hydro team led a workshop about “Stream Bank Restoration in Communities & Backyards,” which included three presentations and a Q&A session. Participants learned about what they can do to improve the water quality and restore the natural function of their neighborhood streams. Scroll down to watch the full webinar! In the first presentation, Water Resources Engineer, Jake Dittes, PE, provides an overview of streams, how they flow, they’re natural evolution, how they’re being impacted by climate change, and the dynamic connection between land and water. Jake provides simple action items that everyone can do to reduce stormwater flow, limit runoff pollutants, boost and protect the natural floodplain. Casey Schrading, E.I.T., Staff Engineer, shares examples of degraded stream systems, discusses a variety of restoration techniques, and talks about his experience with overseeing the largest stream restoration project completed in Maryland. He also provides helpful tips and examples of what individuals can do in their own backyards to promote stream bank stabilization. The third presentation is given by Landscape Architect, Cory Speroff, PLA, ASLA, CBLP. In it he provides an in-depth look at a stream, floodplain and multi-functional riparian buffer restoration project Princeton Hydro completed at Carversville Farm in Western Pennsylvania. And, he provides an in-depth look at the native plants that were installed in various zones throughout the farm and how the different plants help reduce stormwater flow, absorb excess nutrients, and prevent erosion. To view the full webinar go here: https://www.youtube.com/watch?v=xLLkVUp5hJM Many thanks to The Watershed Institute’s Executive Director Jim Waltman and River-Friendly Coordinator Olivia Spildooren for hosting the webinar and inviting Princeton Hydro to participate. To learn more about the Watershed Wednesdays series and other upcoming adult-education events, click here. The Watershed Institute, established in 1949, is a nonprofit organization located in Central New Jersey that promotes and advocates conservation and restoration of natural habitats, collects data on environmental conditions in its watersheds, and provides environmental education through numerous programs. Princeton Hydro specializes in the planning, design, permitting, implementing, and maintenance of ecological rehabilitation projects. To learn more about our watershed restoration services, click here. [post_title] => WATCH: Stream Bank Restoration Webinar [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => free-stream-bank-restoration-webinar [to_ping] => [pinged] => [post_modified] => 2022-01-27 20:27:53 [post_modified_gmt] => 2022-01-27 20:27:53 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=10131 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [10] => WP_Post Object ( [ID] => 9813 [post_author] => 1 [post_date] => 2021-12-28 02:38:00 [post_date_gmt] => 2021-12-28 02:38:00 [post_content] => Thousands of native flowering plants and grasses were planted at Thompson Park in Middlesex County, New Jersey. Once established, the native plant meadow will not only look beautiful, it will reduce stormwater runoff and increase habitat for birds, pollinators, and other critical species. The planting was completed by community volunteers along with Eric Gehring of Kramer+Marks Architects, Middlesex County Youth Conservation Corps, Rutgers Cooperative Extension of Middlesex County, South Jersey Resource Conservation and Development Council, and Princeton Hydro Landscape Architect Cory Speroff, PLA, ASLA, CBLP. All of the plants that were installed are native to the north-central region of New Jersey. Volunteers planted switchgrass (panicum virgatum), orange coneflower (rudbeckia fulgida), blue wild indigo (baptisia australis), partridge pea (chamaecrista fasciculata), Virginia mountain mint (pycnanhemum virginianum), and aromatic aster (symphyotrichum oblongifolium). In selecting the location for each of the plants, special consideration was given to each species' drought tolerance and sunlight and shade requirements. The selected plant species all provide important wildlife value, including providing food and shelter for migratory birds. Photos provided by: Michele Bakacs The planting initiative is one part of a multi-faceted Stormwater Treatment Train project recently completed in Thompson Park. The project is funded by a Water Quality Restoration 319(h) grant awarded to South Jersey Resource Conservation and Development Council by the NJDEP. Middlesex County Office of Parks and Recreation and Office of Planning, NJDEP, South Jersey Resource Conservation and Development Council, Middlesex County Mosquito Extermination Commission, Freehold Soil Conservation District, Rutgers Cooperative Extension, Enviroscapes, and Princeton Hydro worked together to bring this project to fruition. To learn more about the Thompson Park Zoo stormwater project, check out our recent blog: Stormwater Management at Thompson Park ZooWhat is Stormwater Runoff? Stormwater runoff is all of the rainfall or snowmelt water that is not absorbed into the ground and instead flows over land. When not managed properly, stormwater runoff causes issues like pollution in our waterways, flooding, and erosion. Stormwater runoff has been cited in multiple studies as a leading cause of... [post_title] => Thousands of Native Plants Installed in Thompson Park [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => thompson-park-native-plant-meadow [to_ping] => [pinged] => [post_modified] => 2021-12-27 12:58:34 [post_modified_gmt] => 2021-12-27 12:58:34 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=9813 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) ) [post_count] => 11 [current_post] => -1 [in_the_loop] => [post] => WP_Post Object ( [ID] => 12456 [post_author] => 1 [post_date] => 2023-03-22 03:36:34 [post_date_gmt] => 2023-03-22 03:36:34 [post_content] => Today is World Water Day - an annual United Nations observance day that highlights the importance of fresh water and encourages people around the globe to participate in activities that protect our water resources. Reducing stormwater pollution in our neighborhoods is an activity everyone can take part in. Urbanization has fundamentally altered the way that water moves through the landscape. Stormwater that doesn’t soak into the ground runs along streets and parking lots and picks up pollutants. Much of the pollution in our nation’s waterways comes from everyday materials like fertilizers, pesticides, motor oil, trash and plastics, and household chemicals. Rainwater washes these substances from streets, yards, and driveways into storm drains. It’s a common misconception that storm drains lead to wastewater treatment plants. In actuality, storm drains rarely lead to treatment plants and, instead, untreated water is carried directly to the nearest waterway. This polluted runoff can have negative impacts on water quality, overstimulate algal growth (both toxic and non-toxic), harm aquatic species and wildlife, and cause trash and debris to enter our lakes, streams, rivers, and oceans. Storm Drain Cleaning Keeping neighborhood storm drains cleaned is a simple activity with big impacts. Removing debris that collects in nearby stormwater catch basins, storm drains, and along curbs promotes cleaner runoff, reduces the potential for flooding, and decreases the amount of pollution and trash entering our waterways. 5 Simple DIY Steps for Storm Drain Cleaning: Rake/sweep and discard debris that has collected on top of the storm grate and in curbside rain gutters. Please note: If you notice a major blockage or issue with a storm drain, contact your local municipality immediately. Use a scrub brush or toilet bowl scrubber to remove debris that may be stuck to the storm grate. Adopt a storm drain(s) and maintain a regular cleaning schedule: Make a note on your calendar each quarter to clean and clear debris from storm drains nearby your home or workplace. And, make a habit of checking your storm drains after rainstorms when clogging is most common. Host a community clean-up day that includes trash pick-up, storm drain cleaning, and disseminating information on the impacts of stormwater runoff and what we can do to help. Consider contacting your local watershed association or municipality about getting drain markers installed on storm drains throughout the community. The markers act as a continued public reminder that anything dumped into a storm drain eventually ends up in our precious waterways downstream. World Water Day 2023 asks people to “Be the change you want to see in the world." Your actions can help solve the water crisis. Remember: small actions lead to big achievements in protecting water quality. 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Today is World Water Day - an annual United Nations observance day that highlights the importance of fresh water and encourages people around the globe to participate in activities that protect our water resources.
Reducing stormwater pollution in our neighborhoods is an activity everyone can take part in.
Urbanization has fundamentally altered the way that water moves through the landscape. Stormwater that doesn’t soak into the ground runs along streets and parking lots and picks up pollutants. Much of the pollution in our nation’s waterways comes from everyday materials like fertilizers, pesticides, motor oil, trash and plastics, and household chemicals. Rainwater washes these substances from streets, yards, and driveways into storm drains.
It’s a common misconception that storm drains lead to wastewater treatment plants. In actuality, storm drains rarely lead to treatment plants and, instead, untreated water is carried directly to the nearest waterway. This polluted runoff can have negative impacts on water quality, overstimulate algal growth (both toxic and non-toxic), harm aquatic species and wildlife, and cause trash and debris to enter our lakes, streams, rivers, and oceans.
Keeping neighborhood storm drains cleaned is a simple activity with big impacts. Removing debris that collects in nearby stormwater catch basins, storm drains, and along curbs promotes cleaner runoff, reduces the potential for flooding, and decreases the amount of pollution and trash entering our waterways.
Use a scrub brush or toilet bowl scrubber to remove debris that may be stuck to the storm grate.
Adopt a storm drain(s) and maintain a regular cleaning schedule: Make a note on your calendar each quarter to clean and clear debris from storm drains nearby your home or workplace. And, make a habit of checking your storm drains after rainstorms when clogging is most common.
Host a community clean-up day that includes trash pick-up, storm drain cleaning, and disseminating information on the impacts of stormwater runoff and what we can do to help.
Consider contacting your local watershed association or municipality about getting drain markers installed on storm drains throughout the community. The markers act as a continued public reminder that anything dumped into a storm drain eventually ends up in our precious waterways downstream.
World Water Day 2023 asks people to “Be the change you want to see in the world." Your actions can help solve the water crisis. Remember: small actions lead to big achievements in protecting water quality.
When New Jersey Manufacturers Insurance Group (NJM) developed their new Regional Operations Facility, a 55-acre corporate campus in Hammonton, New Jersey, they approached the construction with one major goal at the forefront: stormwater management.
Fundamental to that goal was designing a green infrastructure stormwater management system capable of containing on site nearly all the stormwater runoff generated by storm events up to and including a 100-year frequency, 24-hour duration storm.
The group hired Princeton Hydro, recognized as a leader in innovative, cost-effective, and environmentally sound stormwater management, to develop a concept plan that could be built within the context of proper stormwater management and meet the stringent requirements of the NJ Pinelands Comprehensive Management Plan.
To accomplish the ambitious stormwater management goals, the project team designed and implemented an integrated stormwater management system that combined traditional and green infrastructure components, and consisted of bioinfiltration basins, parking lot islands, a wetland basin, and a bioretention island. These features were designed to promote the interception, evapotranspiration, and infiltration of stormwater runoff at its source.
Emphasis was given to green infrastructure BMPs specifically capable of treating and infiltrating large volumes of runoff. Thus, all of the infiltration areas were designed using a soil amendment process where the underlying soils were excavated and amended with organic material to improve the underlying recharge capabilities of the soils. To complement the BMPs, the team designed and installed 120,000 gallon below-grade rainwater capture and reuse system. The system captures roof runoff to be used for on-site irrigation, which not only reduces stormwater volume but also decreases the facility’s water usage.
The project is one of the first projects in New Jersey built to infiltrate nearly 100% of the on-site runoff and uses site-design-based stormwater capacity to determine allowable impervious cover.
Before construction began, the team implemented a comprehensive study, which began with a detailed analysis of the site’s soils, with particular attention given to physical properties of the soil and the depth to seasonal high water (groundwater). During construction, Princeton Hydro provided monitoring services for all earthwork activities. Our team was on site full-time during critical activities to ensure that the project was built in accordance with the intent of the original design and ensure the maintenance of the project schedule. The team also provided environmental and geotechnical design and engineering services throughout the corporate campus construction, including the analysis of subsurface structures shop drawings and providing consultation support to the general contractor.
For the project, we partnered with Burgis Associates, Inc. who created site designs, provided landscape architectural and professional planning services, and helped to obtain agency approvals. The landscape program sought to establish native plant communities that filter runoff, provide an aesthetically pleasing visual, reduce invasive species, create habitat for pollinators and other critical species, and require limited maintenance to stay healthy and flourishing.
Post construction, the Princeton Hydro team led the preparation of the scope of services, budget, and proposal for the Stormwater Basin Maintenance, which included mowing and clearing the vegetation in nine infiltration basins. The basins were inspected monthly for functionality and for the presence of invasive plants. And, we are happy to report that the basins are all working properly and invasive plants have been eradicated.
At Princeton Hydro, we are experts in stormwater management; we recognize the numerous benefits of green infrastructure; and we’ve been incorporating green infrastructure into our engineering designs since before the term was regularly used in the stormwater lexicon. Click below to read about a Stormwater Treatment Train we designed and implemented in Thompson Park, a 675-acre recreation area in Middlesex County, New Jersey.
The Metedeconk River flows through over 40 miles of New Jersey's woodlands, freshwater wetlands, forested wetlands, tidal wetlands, and densely developed areas before emptying into the Barnegat Bay. The river and its watershed provide drinking water from ground and surface water sources to about 100,000 homes in Ocean and Monmouth Counties.
A tributary to the North Branch of the Metedeconk River that flows directly through Ocean County Park in Lakewood, NJ. This tributary was deemed to have water quality impairments, including fecal coliform due to the Canada Goose population and high temperature due to the exposed stream channels, which lack a significant tree-canopy. The increasing amounts of impervious land cover associated with the continued urbanization of the Metedeconk River’s Watershed was also a primary cause of water quality impairments.
American Littoral Society (ALS) partnered with Princeton Hydro and local stakeholders to implement green infrastructure projects with the goal of remedying the fecal coliform and water temperature impairments in the Park's tributary as well as improving the overall health and water quality of the Metedeconk River, its surrounding watershed, and, ultimately, the greater Barnegat Bay.
The project team designed and implemented a stormwater treatment train, which combined multiple green infrastructure stormwater management best management practices (BMPs) that work in unison to decrease NPS pollutant loading to the Metedeconk River and increase ecological diversity in Ocean County Park.
The project, which was funded by a New Jersey Department of Environmental Protection 2014 319(h) Implementation Grant, included four primary BMPs in Ocean County Park: 1. Installation of two Filterra curb-side tree boxes; 2. Construction of a vegetated bioretention/biofiltration swale; 3. Creation of a section of living shoreline along the banks of Duck Pond; and 4. Installation of two floating wetland islands in Duck Pond.
Built at street level, the Filterra™ tree box is a pre-manufactured, in-ground concrete box filled with soil media and planted with a native, noninvasive tree or shrub. It is designed to collect stormwater, absorb nutrients, and treat water before it discharges into surrounding waterbodies.
For this project, two Filterra™ tree box units were installed in the parking lot to the north of Ocean County Park's swimming beach and each planted with serviceberry shrubs. The boxes serve to catch and treat stormwater runoff flowing from the parking lot.
Unlike a traditional drainage basin that simply collects water, a vegetated bioswale uses native plants to reduce the volume of stormwater runoff, decrease total phosphorus loading, and prevent debris, sediment, and pollutants from flowing into the Metedeconk River and other surrounding waterbodies.
For this project, the team designed and implemented a .07-acre bioswale adjacent to the park's main parking lot. Installation of the vegetated bioswale began by removing existing vegetation, excavating the ground north of the parking lot, and then regrading it per the specifications on the plans. Once proper grading was established, the basin was planted with native species including Joe Pye Weed, Blue Mistflower, Jacob Cline Bee Balm, Orange Coneflower, and Wrinkleleaf Goldenrod.
Living shorelines use a variety of native plants to filter runoff, create and improve habitat for aquatic animals, increase water quality, and protect the shoreline from erosion. Two sections of bulkhead along the North and South edges of Ocean County Park's Duck Pond were removed so that the bank could be sloped naturally into the pond and populated with vegetation. The design serves as an additional point of stormwater collection and filtration, significantly reducing the amount of water flowing into nearby paved parking areas.
The northern portion of the living shoreline encompasses 0.06 acres and spans 100 feet along the shore. The southern portion encompasses 0.18 acres and spans 40 feet along the shore. The living shorelines were seeded and then planted with Green Bulrush, Helen’s Flower, Switchgrass, Blue Mistflower, New England Aster, Upright Sedge, and Little BlueStem.
A floating wetland island is made up of a plastic matrix that is planted with water-loving native vegetation. The matrix promotes the growth of a healthy microbial community. The biofilm that develops on the plants' roots and within the island matrix, contribute toward the uptake of nutrients within the waterbody thus improving water quality. Floating wetland islands are anticipated to remove an estimated 17.33 lbs of phosphorus and 566.67 lbs of nitrogen each year, as well as promote a balanced ecosystem through the promotion of “healthy” bacteria and plankton.
Two 250-square-foot floating wetland islands made of polyethylene terephthalate layers were populated with native wetland plants and installed in Duck Pond. The plant pockets were then filled with a biomix of soil and peat, and a variety of native plant species were planted on both islands, including: Swamp Milkweed, Upright Sedge, Common Boneset, Crimson Eyed Rosemallow, and Blue Flag Iris.
Given the magnitude of the project and the high-profile nature of Barnegat Bay, community education and outreach was an essential element of the project and its long-term success. Throughout the course of the project, efforts were made to increase public understanding of the project and to encourage public input in the design of the green infrastructure BMPs and the living shoreline.
The education and outreach was a collaborative effort led by ALS, with support provided by the Ocean County Department of Parks and Recreation, Georgian Court University, Brick Municipal utilities Authority, NJDEP, and Princeton Hydro.
The team conducted public presentations and meetings, installed educational signs to accompany the water quality improvement techniques that were implemented, created a website dedicated to providing project details and updates, and invited local residents to participate in shoreline restoration and floating wetland island planting efforts.
Following the project, in-situ and discrete water quality monitoring was conducted in stream in order to assess the effectiveness of the above BMPs. The combined green infrastructure and living shoreline elements of this project set the stage for a much needed effort to reduce nonpoint source pollution loading and address waterfowl-related pathogen impacts to Ocean County Park’s lakes and the Metedeconk River. It also heightened public awareness of nonpoint source pollution and the benefits of green infrastructure measures in the abatement of water quality problems.
The project serves as a model for proper stormwater management and living shoreline creation throughout both the Metedeconk River and Barnegat Bay Watersheds.
Princeton Hydro led a stormwater management webinar during which participants learned about the purpose, management, and functionality of stormwater basins, and how to get involved in addressing stormwater management issues in their own communities. Dr. Clay Emerson, P.E., CFM and Mark Gallagher, the webinar instructors, provided examples of basins that could benefit most from a retrofit and step-by-step instructions on how to revitalize older basins to meet new stormwater standards and more effectively manage runoff.
The workshop, hosted by The Watershed Institute, is part of the Watershed Wednesdays webinar series, which explores a variety of topics related to protecting and improving water quality. The Watershed Institute, established in 1949, is a nonprofit organization located in Central New Jersey that promotes and advocates conservation and restoration of natural habitats, collects data on environmental conditions in its watersheds, and provides environmental education through numerous programs. To learn more about The Watershed Institute and other upcoming adult-education events, click here.
At Princeton Hydro, we are experts in stormwater management; we recognize the numerous benefits of green infrastructure; and we’ve been incorporating green infrastructure into our engineering designs since before the term was regularly used in the stormwater lexicon. Click here to read about the on-call stormwater services and ongoing residential, commercial, and professional redevelopment projects we’re working on in Tredeffryin Township, Pennsylvania.
The Lion’s Gate Park and Urban Wetland Floodplain Creation Project has been chosen as a winner of the New Jersey Future “Smart Growth Awards” for 2022. The project transformed a densely developed, flood-prone, industrial site into a thriving public active recreation park with 4.2 acres of wetlands.
As stated in the New Jersey Future award announcement, “The park is representative of smart growth values, with walkable trails in the middle of a residential area, a regenerated protected wetland which helps to mitigate flooding from storms like Hurricane Ida, and mixed-use opportunities for recreation. The dual roles of Lion Gate Park as both a source of resilience and recreation demonstrate a model of land use and planning that values the accessibility of public spaces while acknowledging and addressing the urgent need to adapt to the growing impacts of climate change in New Jersey.”
The restoration project site is located in Bloomfield Township and includes 1,360 feet along the east bank of the Third River and 3,040 feet along the banks of the Spring Brook. These waterways are freshwater tributaries of the Passaic River and share a history of flooding above the site’s 100-year floodplain. The Third River, like many urban streams, tends to be the victim of excessive volume and is subjected to erosion and chronic, uncontrolled flooding.
By removing a little over four acres of upland historic fill in this density developed area and restoring the natural floodplain connection, we significantly improved the land’s ecological value; enhanced the aquatic and wildlife habitat; increased flood storage capacity for urban stormwater runoff; replaced invasive plant species with thriving native wetland and riparian plant communities; and provided outdoor recreation accessibility to Bloomfield Township.
The Lion Gate Park project is the culmination of nearly two decades of collaborative work. The primary project team includes the Township of Bloomfield, NY/NJ Baykeeper, Bloomfield Third River Association, CME Associates, PPD Design, GK+A Architects, Enviroscapes, Strauss and Associates/Planners, and Princeton Hydro. The project recieved $1.76 million in funding from the New Jersey Freshwater Wetlands Mitigation Council and another several million dollars from NJDEP’s Office of Natural Resource Restoration.
Princeton Hydro served as the ecological engineer to Bloomfield Township. Our scientists and engineers assisted in obtaining grants, collected background ecological data through field sampling and surveying, created a water budget, completed all necessary permitting, designed both the conceptual and final restoration plans, and conducted construction oversight throughout the project. Enviroscapes and Princeton Hydro are currently monitoring the site on behalf of the Township.
“Local residents are already benefiting from this floodplain creation project. During Tropical Storm Ida, the area held significant flood waters,” said Mark Gallagher, Vice President of Princeton Hydro. “This restoration project really exemplifies how a diverse group of public and private entities can work together to prioritize urban and underserved areas to mitigate flooding and create new open space. We’re honored to be recognized by NJ Future and selected as a winner of this important award.”
Since 2002, New Jersey Future has honored smart planning and redevelopment in New Jersey through its "Smart Growth Awards." The projects and plans chosen each year represent some of the best examples of sustainable growth and redevelopment in the state. For a complete list of 2022 Award Winners, click here. For more info on New Jersey Future, click here.
The New Jersey Department of Environmental Protection (NJDEP) launched a Youth Inclusion Initiative to help the State of New Jersey develop the next generation of environmental protection, conservation and stewardship leaders while also providing an avenue for young adults from open space-constrained communities to engage with nature as they provide valuable stewardship services to the public through jobs at NJDEP.
This year, the youth inclusion program is partnering with Groundwork Elizabeth, Rutgers University Camden, and Newark’s Ironbound Community Corporation to create a workforce development curriculum for people ages 17 to 24. Groundwork Elizabeth sent 12 participants to this year’s program, and Rutgers Camden and the Ironbound Community Corporation each sent 10.
The curriculum provides career education in the environmental protection field and helps the young participants develop the skills necessary to pursue those career paths in New Jersey. Participants learn through classroom instruction and by working across sectors regulated by the NJDEP, including water resources, air quality, energy and sustainability, public lands management, and wildlife.
Susan Lockwood of NJDEP’s Division of Land Resource Protection’s Mitigation Unit reached out to Princeton Hydro to showcase ecosystem restoration and mitigation efforts across the state as well as discuss the variety of career roles that make these projects possible. Our portion of the curriculum entailed each group of students visiting two sites to learn about the benefits of restoring a landscape with native vegetation. Our discussion explored different fields of work related to urban environmental restoration and water resource protection and the job responsibilities of environmental scientists, water resource engineers, geologists, ecologists, pesticide applicators, and regulatory compliance specialists.
After a quick stop at NJDEP’s office in Trenton to learn about NJ invasive species, all three groups popped over to the Tulpehaking Nature Center in Mercer County’s John A. Roebling Park to see the restoration site in the Abbott Marshlands. The 3,000-acre Abbott Marshlands is the northernmost freshwater tidal marsh on the Delaware River and contains valuable habitat for many rare species like River Otter, American Eel, Bald Eagle, and various species of wading birds. Unfortunately, the area has experienced a significant amount of loss and degradation, partially due to the introduction of the invasive Common Reed (Phragmites australis). For Mercer County Park Commission, Princeton Hydro implemented a restoration plan to remove Common Reed and expose the native seed bank in 40-acres of the marsh to increase biodiversity, improve recreational opportunities, and enhance visitor experience. Students learned how to tell the difference between the invasive Common Reed vs. native Wild Rice (Zizania palustris L.). They utilized tools of the trade like field guides and binoculars to identify flora and fauna in the marsh. Learn more about this project.
After visiting the Roebling site, students from Camden traveled down to Evesham Township in Burlington County to visit the Mullica River Wetland Mitigation Site. For this project, Princeton Hydro worked with GreenVest, LLC to restore a highly degraded 34-acre parcel of land which was previously used for cranberry cultivation. Through the implementation of restoration activities focused on removing the site’s agricultural infrastructure, Princeton Hydro and GreenVest were able to restore a natural wetland system on the site and over 1,600 linear feet of stream, providing forested, scrub-shrub, and emergent wetlands, forested uplands, headwater stream and riparian buffer, and critical wildlife habitat. The project also significantly uplifted threatened and endangered species habitats including Timber Rattlesnake.
Susan Lockwood of NJDEP, Owen McEnroe of GreenVest, and Dana Patterson of Princeton Hydro, lead the group of 10 students. They learned the difference between restoration and mitigation and got to experience the remoteness of Pinelands habitat. Walking through the site, we shared how the dam and dike removal helped to restore the river back to its natural free-flowing state and the numerous resulting environmental benefits.The site was chosen for the Camden students in order to demonstrate that successful mitigation and restoration projects happen throughout the State and not far from urban centers like Camden. Learn more about this project.
After visiting the Roebling site, students from Newark and Elizabeth trekked up to Essex County to visit an urban wetland creation project now known as Lion Gate Park. The once densely developed, abandoned Scientific Glass Factory in Bloomfield Township was transformed into a thriving public park with 4.2 acres of wetlands. Students heard the story of how this project came to be; decades of advocacy and litigation by community members and environmental nonprofits to stop redevelopment of the site into 148 townhomes. Bloomfield Township eventually secured the property to preserve as open space through a range of grants from NJDEP. Serving as the ecological engineer to Bloomfield Township, Princeton Hydro designed, permitted, and oversaw construction for the restoration project and is currently monitoring the site. The restoration work brought back to the land valuable ecological functions and natural floodplain connection, enhanced aquatic and wildlife habitat, and increased flood storage capacity for urban stormwater runoff. Learn more about this project.
The NJDEP Youth Inclusion Initiative began on July 5 with a week of orientation classes, and continued through August with classroom and in-field learning. The initiative culminates on August 26 with a graduation and NJDEP Career Day, during which students will have the opportunity to meet with and discuss career options with various organizations tabling at the event, including Princeton Hydro.
Click here to learn more about the NJDEP education program. If you’re interested in learning more about Princeton Hydro’s ecological restoration services, click here.
A green roof is a roof fully or partially covered in plants and waterproof media that helps reduce the volume and velocity of stormwater runoff from roofs by temporarily storing stormwater, slowing excess stormwater release, and promoting evaporation.
Green roofs offer many benefits. They can help regulate a building’s internal temperature, which leads to heating and cooling energy savings; reduce stormwater runoff; mitigate the urban heat island effect; and increase biodiversity.
From the planted rooftop of a building in Berwyn, Pennsylvania, we spoke with Philadelphia Green Roofs Principal and Owner Jeanne Weber, BSLA, GRP about the basics and benefits of green roofs for stormwater management. Click below to watch:
To learn more about green infrastructure and stormwater management, check out our blog:
In October 2021, the largest stream restoration in Maryland was completed. Over 7 miles (41,000 linear feet) of Tinkers Creek and its tributaries were stabilized and restored.
The project was designed by Princeton Hydro for GV-Petro, a partnership between GreenVest and Petro Design Build Group. Working with Prince George’s County Department of the Environment and coordinating with the Maryland-National Capital Parks and Planning Commission, this full-delivery project was designed to meet the County’s Watershed Implementation Plan total maximum daily load (TMDL) requirements and its National Pollutant Discharge Elimination System Municipal Separate Storm Sewer System (MS4) Discharge Permit conditions.
Today, we are thrilled to report that the once highly urbanized watershed is flourishing and teeming with life:
We used nature-based design and bioengineering techniques like riparian zone planting and live staking to prevent erosion and restore wildlife habitat.
10,985 native trees and shrubs were planted in the riparian area, and 10,910 trees were planted as live stakes along the streambank.
For more information about the project visit GreenVest's website and check out our blog:
The NJ Department of Environmental Protection (NJDEP) hosted its 3rd Annual Harmful Algal Bloom (HAB) Summit! The all-day, virtual seminar included expert presentations and facilitated open-forum discussions related to HAB science, monitoring, response, management, treatment and communication.
Approximately 220 people from around the country participated in the virtual summit, which was free and open to the public. The audience of stakeholders included government officials (local, state, federal); lake and other environmental commissions; watershed associations; environmental nonprofits; businesses; academics; lake management and HAB treatment experts; and folks interested in protecting their community lakes.
Participants heard presentations about “Keeping Your Pets Safe from HABs,” “The Benefit of Riparian Buffers;” and “Stormwater Management and the Use of Green Infrastructure.” Additionally, two members of the NJDEP HAB Expert Team - Dr. Fred Lubnow Director and Dr. Meiyin Wu - gave a presentation on best management practices to prevent, mitigate, and/or control HABs. The 10-person expert team was established as part of Governor Phil Murphy’s plan to enhance scientific expertise around water quality management and bolster the State’s response to HABs.
The Governor’s HABs Initiative was launched in 2019 after lakes throughout NJ (and the entire Continental U.S.) suffered from HAB outbreaks, which caused local and county health agencies to close off all beaches and issue advisories. These unprecedented conditions had significant negative impacts on lake-related ecological, recreational, and economic resources. The Governor’s initiative designated $13 million in funding to local communities for HABs reduction/prevention; established the aforementioned HABs expert team; and coordinated annual HABs summits in order to encourage continued community education and discussion.
The NJDEP Division of Water Monitoring and Standards has an entire website dedicated to HABs. Click here to access educational fact sheets, stay informed on HAB alerts and advisories, and report a HAB sighting.
For more information about HABs, watch a live interview with Dr. Fred Lubnow on Jersey Matters during which he discusses what steps should be taken to prevent HABs, and check out our recent blog:
This year marks the 50th anniversary of the Clean Water Act. In celebration, The Watershed Institute launched its “Watershed Wednesdays” webinar series, which explores a variety of topics related to the environmental laws that arose after the Clean Water Act was instated. The webinars are free, open to the public and occur on the 3rd Wednesday of each month between 6 - 7:15pm EST.
To kick-off the Watershed Wednesdays series, three experts from the Princeton Hydro team led a workshop about “Stream Bank Restoration in Communities & Backyards,” which included three presentations and a Q&A session. Participants learned about what they can do to improve the water quality and restore the natural function of their neighborhood streams. Scroll down to watch the full webinar!
In the first presentation, Water Resources Engineer, Jake Dittes, PE, provides an overview of streams, how they flow, they’re natural evolution, how they’re being impacted by climate change, and the dynamic connection between land and water. Jake provides simple action items that everyone can do to reduce stormwater flow, limit runoff pollutants, boost and protect the natural floodplain.
Casey Schrading, E.I.T., Staff Engineer, shares examples of degraded stream systems, discusses a variety of restoration techniques, and talks about his experience with overseeing the largest stream restoration project completed in Maryland. He also provides helpful tips and examples of what individuals can do in their own backyards to promote stream bank stabilization.
The third presentation is given by Landscape Architect, Cory Speroff, PLA, ASLA, CBLP. In it he provides an in-depth look at a stream, floodplain and multi-functional riparian buffer restoration project Princeton Hydro completed at Carversville Farm in Western Pennsylvania. And, he provides an in-depth look at the native plants that were installed in various zones throughout the farm and how the different plants help reduce stormwater flow, absorb excess nutrients, and prevent erosion.
To view the full webinar go here:
Many thanks to The Watershed Institute’s Executive Director Jim Waltman and River-Friendly Coordinator Olivia Spildooren for hosting the webinar and inviting Princeton Hydro to participate. To learn more about the Watershed Wednesdays series and other upcoming adult-education events, click here.
The Watershed Institute, established in 1949, is a nonprofit organization located in Central New Jersey that promotes and advocates conservation and restoration of natural habitats, collects data on environmental conditions in its watersheds, and provides environmental education through numerous programs.
Princeton Hydro specializes in the planning, design, permitting, implementing, and maintenance of ecological rehabilitation projects. To learn more about our watershed restoration services, click here.
Thousands of native flowering plants and grasses were planted at Thompson Park in Middlesex County, New Jersey. Once established, the native plant meadow will not only look beautiful, it will reduce stormwater runoff and increase habitat for birds, pollinators, and other critical species.
The planting was completed by community volunteers along with Eric Gehring of Kramer+Marks Architects, Middlesex County Youth Conservation Corps, Rutgers Cooperative Extension of Middlesex County, South Jersey Resource Conservation and Development Council, and Princeton Hydro Landscape Architect Cory Speroff, PLA, ASLA, CBLP.
All of the plants that were installed are native to the north-central region of New Jersey. Volunteers planted switchgrass (panicum virgatum), orange coneflower (rudbeckia fulgida), blue wild indigo (baptisia australis), partridge pea (chamaecrista fasciculata), Virginia mountain mint (pycnanhemum virginianum), and aromatic aster (symphyotrichum oblongifolium). In selecting the location for each of the plants, special consideration was given to each species' drought tolerance and sunlight and shade requirements. The selected plant species all provide important wildlife value, including providing food and shelter for migratory birds.
The planting initiative is one part of a multi-faceted Stormwater Treatment Train project recently completed in Thompson Park. The project is funded by a Water Quality Restoration 319(h) grant awarded to South Jersey Resource Conservation and Development Council by the NJDEP.
Middlesex County Office of Parks and Recreation and Office of Planning, NJDEP, South Jersey Resource Conservation and Development Council, Middlesex County Mosquito Extermination Commission, Freehold Soil Conservation District, Rutgers Cooperative Extension, Enviroscapes, and Princeton Hydro worked together to bring this project to fruition.
To learn more about the Thompson Park Zoo stormwater project, check out our recent blog:
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