We’re committed to improving our ecosystems, quality of life, and communities for the better.
Our passion and commitment to the integration of innovative science and engineering drive us to exceed on behalf of every client.
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Today, we're delighted to celebrate the accomplishments of two team members whose recent certifications exemplify this commitment. Their achievements not only reflect individual dedication but also enhance our firm’s collective ability to innovate and deliver exceptional environmental solutions. Scott Churm Earns EutroSORB® PRO Certification Scott Churm, Senior Director of Field Services, recently became a PRO Certified EutroSORB® Specialist—a designation granted by SePRO Corporation to professionals trained in the implementation of EutroSORB Water Quality Technologies for phosphorus control in lakes and ponds. EutroSORB® is a cutting-edge technology designed to reduce phosphorus levels, curtail eutrophication, and restore the health of aquatic ecosystems. To earn this certification, Scott completed specialized training and passed a comprehensive exam, demonstrating his advanced knowledge in evaluating water quality issues and prescribing targeted, effective solutions. Since joining Princeton Hydro in 2006, Scott has led our pond and lake management services with unmatched expertise. From identifying invasive aquatic species to overseeing long-term management plans, his work spans hundreds of sites and over 1,000 acres. He’s a licensed pesticide applicator in five states and has implemented a wide range of techniques, from hydro-raking and weed harvesting to aeration system installations and biological controls, to support the health and balance of aquatic environments. With this new certification, Scott adds another tool to his already expansive toolbox, further reinforcing our team’s ability to restore and preserve water bodies across the region. Matthew Pappas Becomes a Certified Construction Specifier (CCS®) Matthew Pappas, a Geotechnical Engineer at Princeton Hydro, recently earned the prestigious CCS® credential from the Construction Specifications Institute (CSI). This certification demonstrates advanced proficiency in specification (spec) writing, construction documentation, and product research—critical skills that improve project delivery and communication across all phases of construction. To become CCS-certified, candidates must pass a rigorous exam that evaluates their understanding of contracts, technical documentation, and spec development best practices. With this achievement, Matthew joins a select group of professionals recognized for their ability to clearly and effectively communicate design intent, construction materials, and performance standards. Since joining Princeton Hydro in 2019, Matthew has worked across disciplines, supporting our geotechnical practice and green infrastructure initiatives. His responsibilities span from field investigations and laboratory testing to slope stability and sediment modeling to spec drafting and cost estimating. He’s also earned several technical responsibilities, including serving as the firm's Radiation Safety Officer and receiving training in concrete field testing. Matthew's initiative and adaptability have made him a valuable asset to our team, and his CCS certification further exemplifies his dedication to technical excellence and lifelong learning. Congratulations to Scott and Matthew on their well-earned achievements! To learn more about the Princeton Hydro team, click here. [post_title] => Staff Spotlight: Recognizing Professional Achievements of Two Team Members [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => staff-spotlight-recognizing-professional-achievements-of-two-team-members [to_ping] => [pinged] => [post_modified] => 2025-07-11 10:10:30 [post_modified_gmt] => 2025-07-11 10:10:30 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=17414 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [1] => WP_Post Object ( [ID] => 12354 [post_author] => 1 [post_date] => 2023-02-23 18:07:27 [post_date_gmt] => 2023-02-23 18:07:27 [post_content] => At Princeton Hydro, we are committed to improving our communities, quality of life, and ecosystems for the better. Our passion and commitment to the integration of innovative science and engineering drive us to exceed on behalf of every client. Today, we are proud to announce the addition of a new Senior Project Manager for Engineering Services: Sean Walsh, P.E. Prior to joining Princeton Hydro, Sean worked on a wide variety of civil and wastewater engineering projects including site improvement projects for multiple public schools to improve pedestrian and traffic safety and ADA compliance, development and maintenance of an asset management of a drinking water utility, several site development projects of existing schools for building additions and site improvements, construction observation and administration of the emergency restoration of a 80M GPD wastewater pump station devastated by Hurricane Sandy, and design and construction installation of recreation facilities such as basketball courts, tennis courts, pickleball courts, synthetic turf fields and running tracks. Sean has a B.S. in Bioresource Engineering and a M.S. in Civil Engineering from Rutgers University. His Masters' thesis focused on modeling the impact of sediment accumulation has on the hydraulic conductivity of porous concrete. Sean has been a licesned Professional Engineer since 2011. In his free time, Sean enjoys spending time with his family and friends and playing pick-up basketball. [post_title] => Join us in Welcoming our New Engineering Senior Project Manager [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => join-us-in-welcoming-our-new-engineering-senior-project-manager [to_ping] => [pinged] => [post_modified] => 2023-02-27 14:12:17 [post_modified_gmt] => 2023-02-27 14:12:17 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=12354 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [2] => WP_Post Object ( [ID] => 10853 [post_author] => 1 [post_date] => 2022-07-12 07:31:48 [post_date_gmt] => 2022-07-12 07:31:48 [post_content] => Princeton Hydro Engineering Services Project Manager Brendon Achey earned a Professional Geologist License from the Delaware Board of Geologists. The primary objective of the Delaware Board of Geologists is to maintain the highest standards within the practice of geology. To meet these objectives, the Board develops standards for professional competency; promulgates rules and regulations; adjudicates complaints against professionals and, when necessary, imposes disciplinary sanctions; and issues licenses to geologists. "Becoming a Professional Geologist has been a long-term goal of mine since I started working in the field with Princeton Hydro," said Brendon. "Obtaining the license has given me a huge sense of accomplishment. I'm no longer just the guy who says he knows a ton about soils and geology - now I've got the credentials to prove it!" Brendon has a wealth of experience in geotechnical investigations, in-field soil sampling and testing, laboratory testing, soil classifications, site characterization, and infiltration testing. He has a Bachelor's degree in Geology and a Bachelor's in Marine Science both from Stockton University. In order to be considered for the Delaware Board of Geologists' Professional Geologist License designation, Brendon had to meet a variety of requirements, including:
At Princeton Hydro, we take pride in fostering a culture of continuous learning and professional growth. Today, we're delighted to celebrate the accomplishments of two team members whose recent certifications exemplify this commitment. Their achievements not only reflect individual dedication but also enhance our firm’s collective ability to innovate and deliver exceptional environmental solutions.
Scott Churm, Senior Director of Field Services, recently became a PRO Certified EutroSORB® Specialist—a designation granted by SePRO Corporation to professionals trained in the implementation of EutroSORB Water Quality Technologies for phosphorus control in lakes and ponds.
EutroSORB® is a cutting-edge technology designed to reduce phosphorus levels, curtail eutrophication, and restore the health of aquatic ecosystems. To earn this certification, Scott completed specialized training and passed a comprehensive exam, demonstrating his advanced knowledge in evaluating water quality issues and prescribing targeted, effective solutions.
Since joining Princeton Hydro in 2006, Scott has led our pond and lake management services with unmatched expertise. From identifying invasive aquatic species to overseeing long-term management plans, his work spans hundreds of sites and over 1,000 acres. He’s a licensed pesticide applicator in five states and has implemented a wide range of techniques, from hydro-raking and weed harvesting to aeration system installations and biological controls, to support the health and balance of aquatic environments.
With this new certification, Scott adds another tool to his already expansive toolbox, further reinforcing our team’s ability to restore and preserve water bodies across the region.
Matthew Pappas, a Geotechnical Engineer at Princeton Hydro, recently earned the prestigious CCS® credential from the Construction Specifications Institute (CSI). This certification demonstrates advanced proficiency in specification (spec) writing, construction documentation, and product research—critical skills that improve project delivery and communication across all phases of construction.
To become CCS-certified, candidates must pass a rigorous exam that evaluates their understanding of contracts, technical documentation, and spec development best practices. With this achievement, Matthew joins a select group of professionals recognized for their ability to clearly and effectively communicate design intent, construction materials, and performance standards.
Since joining Princeton Hydro in 2019, Matthew has worked across disciplines, supporting our geotechnical practice and green infrastructure initiatives. His responsibilities span from field investigations and laboratory testing to slope stability and sediment modeling to spec drafting and cost estimating. He’s also earned several technical responsibilities, including serving as the firm's Radiation Safety Officer and receiving training in concrete field testing.
Matthew's initiative and adaptability have made him a valuable asset to our team, and his CCS certification further exemplifies his dedication to technical excellence and lifelong learning.
Congratulations to Scott and Matthew on their well-earned achievements! To learn more about the Princeton Hydro team, click here.
At Princeton Hydro, we are committed to improving our communities, quality of life, and ecosystems for the better. Our passion and commitment to the integration of innovative science and engineering drive us to exceed on behalf of every client.
Today, we are proud to announce the addition of a new Senior Project Manager for Engineering Services:
Prior to joining Princeton Hydro, Sean worked on a wide variety of civil and wastewater engineering projects including site improvement projects for multiple public schools to improve pedestrian and traffic safety and ADA compliance, development and maintenance of an asset management of a drinking water utility, several site development projects of existing schools for building additions and site improvements, construction observation and administration of the emergency restoration of a 80M GPD wastewater pump station devastated by Hurricane Sandy, and design and construction installation of recreation facilities such as basketball courts, tennis courts, pickleball courts, synthetic turf fields and running tracks.
Sean has a B.S. in Bioresource Engineering and a M.S. in Civil Engineering from Rutgers University. His Masters' thesis focused on modeling the impact of sediment accumulation has on the hydraulic conductivity of porous concrete. Sean has been a licesned Professional Engineer since 2011.
In his free time, Sean enjoys spending time with his family and friends and playing pick-up basketball.
Princeton Hydro Engineering Services Project Manager Brendon Achey earned a Professional Geologist License from the Delaware Board of Geologists.
The primary objective of the Delaware Board of Geologists is to maintain the highest standards within the practice of geology. To meet these objectives, the Board develops standards for professional competency; promulgates rules and regulations; adjudicates complaints against professionals and, when necessary, imposes disciplinary sanctions; and issues licenses to geologists.
"Becoming a Professional Geologist has been a long-term goal of mine since I started working in the field with Princeton Hydro," said Brendon. "Obtaining the license has given me a huge sense of accomplishment. I'm no longer just the guy who says he knows a ton about soils and geology - now I've got the credentials to prove it!"
Brendon has a wealth of experience in geotechnical investigations, in-field soil sampling and testing, laboratory testing, soil classifications, site characterization, and infiltration testing. He has a Bachelor's degree in Geology and a Bachelor's in Marine Science both from Stockton University.
Receiving a degree from an accredited college or university with a major in geology; and/or completing 30 credit hours of geology or its subdisciplines, of which 24 credits are third- or fourth-year courses or graduate courses;
Acquiring 5 years of experience in geologic work satisfactory to the Board and as defined in its rules and regulations; and
Achieving the passing score on all parts of the written, standardized examination administered by the National Association of State Boards of Geology (ASBOG), or its successor.
Having joined the Princeton Hydro team in 2011, Brendon's responsibilities include: project management, preparation and quality control of technical deliverables, geotechnical investigations and analysis, groundwater hydrology, soil sampling plan design, and site characterization. He also manages the Princeton Hydro Geosciences & Soils Lab, which is a full-service AASHTO-accredited and USACE-validated laboratory in the Sicklerville, NJ office.
The geotechnical soils and rock testing lab allows our team to complete 100% of geotechnical investigation planning and oversight, laboratory testing, analysis, design, and reporting in-house. In addition to managing the daily lab operations, Brendon is responsible for maintaining the lab's accreditation according to the most recent AASHTO quality standards, scheduling and performing/overseeing lab testing, technician training and evaluation, internal audits, records retention, calibrating and maintaining all laboratory equipment, and providing detailed results and reports to clients.
In addition to his new Professional Geologist License, Brendon holds a number of certifications, including: Nuclear Regulatory Commission, Soil Density and Moisture Content Gauge Operator and OSHA 40-Hour Health and Safety Training for Hazardous Waste Operations (HAZWOPER).
To read about one of the projects Brendon worked on in his role as Geotechnical Soil Laboratory Project Manager, click below:
James holds an M.S. in Environmental and Water Resources Engineering from the University of Texas at Austin and a B.S. in Civil Engineering from the University of Delaware, from which he graduated with honors and distinction.
As both an undergraduate and a graduate student, he participated in a number of research projects, where he developed a ardor for improving the environment. He was most passionate about two projects: one focused on tracking oil after marine spills, and another about the fate of environmental contaminants, specifically those found in buoyant plumes.
Outside of work, James enjoys exercising, hiking and running. He is also an avid fisherman and sports enthusiast.
Cole received a B.S. in Environmental Engineering with a specialization in Applied Ecology from the University of Colorado Boulder. He was part of the Livneh Post-Wildfire Hydrology research group that measured chemical constituents in runoff following simulated burnings and storm events in Colorado’s Front Range.
Cole has also had professional experience in Regenerative Agriculture, Permaculture, and Horticulture. He firmly believes that increasing the crossover between engineering, environmental science, and ecology will promote a more sustainable world.
Michael is a New York State licensed Professional Engineer with over eight years of experience in geotechnical engineering. He has a M.S. and B.S. in Civil and Environmental Engineering from Rutgers University. Prior to joining Princeton Hydro, Michael worked in New York City inspecting and designing building foundations.
To learn more about the Princeton Hydro staff or if you're interested in joining the team, click here.
Princeton Hydro is dedicated to protecting our natural resources and changing our ecosystems, quality of life and communities for the better. Our team members are passionate about continuing to learn new technologies, staying ahead of regulatory changes, and expanding their knowledge.
Today, we are proud to put the spotlight on seven team members who recently achieved new professional certifications.
We are thrilled to announce that six team members earned their Professional Engineer (PE) license in four states:
The PE license is the engineering profession’s highest standard of competence, a significant symbol of achievement and assurance of quality. To become licensed, engineers must complete a four-year college degree, work under a Professional Engineer for at least four years, pass two intensive competency exams, and earn a license from their state's licensure board. Then, to retain their licenses, PEs must continually maintain and improve their skills throughout their careers.
Andrew Simko, who works in our Bowie, Maryland office, has extensive experience in floodplain and stormwater management, and is proficient in hydrologic and hydraulics computer modeling and GIS. Before arriving to Princeton Hydro, Andrew worked as a water resources engineer developing FEMA flood insurance rate maps and helping to design stormwater management projects.
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Jake Dittes is passionate about restoring the habitat and natural functions of aquatic systems. As a Water Resources Engineer, Jake works on hydrologic and hydraulic modeling, project design, drafting and construction management on ecological restoration projects. He is based in our New England field office.
Jake Schwartz is a Staff Engineer with a B.S. in Civil Engineering with experience in stormwater design, site layout, construction inspection, environmental regulation, as well as water chemistry and hydraulic principles. Jake uses his knowledge and experience to design sustainable site plans for a variety of projects.
Water Resource Engineer Robert Costello uses his knowledge and experience to provide the best possible outcomes for our clients in every one of his projects. Robert received his degree from the University of Delaware, with a major in Environmental Engineering and a Minor in Civil Engineering. Robert has experience in subsurface geotechnical investigations, hydrologic and hydraulic modeling of water conveyance systems, stormwater BMP design, as well as the complete design, modeling, and supervision of Green Infrastructure Systems.
Ryan Wasik is a Water Resource Engineer with a B.S. in Civil Engineering and a minor in Environmental Engineering from Widener University in in Chester, PA. He has professional experience in roadway design, ADA ramp design, site grading and layout, utility design, erosion and sediment control measures, and stormwater design/inspections.
Staff Engineer Stephen Duda is a civil engineer with expertise in grading and stormwater design, drafting, permitting, soil testing and construction inspection. Prior to Princeton Hydro, he worked for a small land development firm in South Jersey, where he worked on multiple aspects of land development projects, construction management and municipal engineering. He holds an Associate degree in General Engineering and Engineering Technologies/CAD, as well as a B.S. in Civil Engineering from Rowan University.
Jake Dittes also earned the New Jersey Watershed Institute Green Infrastructure (WIGI) certification. WIGI is an adapted version of the Level 1 training to landscape professionals in New Jersey who design, install, and maintain stormwater best management practices (BMPs) and conservation landscapes.
The achievement of the WIGI certification demonstrates an advanced level of professionalism and knowledge of sustainable landscaping practices for healthier watersheds. Certification is voluntary and candidates must pass a comprehensive exam that assesses an individual’s command of sustainable practices in the design, installation, and maintenance of landscapes. WIGI-certified professionals have in-depth knowledge of sustainable landscape best practices and a focus on maintenance of stormwater best management practices.
Jake recently led a webinar for The Watershed Institute about stream bank stabilization and restoration. Check it out here:
Christiana Pollack, GISP, CFM, Senior Project Manager, Ecologist and Certified Floodplain Manager, is now a Certified Ecological Restoration Practitioner (CERP) through the Society for Ecological Restoration (SER).
SER’s CERP program encourages a high professional standard for those who are designing, implementing, overseeing, and monitoring restoration projects. Only senior level practitioners who have achieved the knowledge requirements and have greater than five years of full-time experience with restoration can be certified.
Christiana has 15+ years of expertise in hydrologic modeling and ecological restoration, with a focus on freshwater and tidal habitats, living shorelines using natural and nature-based features, spatial analysis, and environmental mapping. She performs flood mitigation and wetland hydrology modeling in riverine systems, and, as a project manager, she oversees numerous ecological restoration design and geospatial projects, including vulnerability assessments and hazard mitigation planning mapping. Additionally, Christiana manages several wetland restoration projects that provide ecosystem services to mitigate flood risks, improve water quality, and strengthen storm resiliency.
CERP is designed to ensure that certified practitioners are up to date on the new and important developments in the field of ecological restoration – both from the scientific and the practical perspectives. The certification is valid for 5 years after approval, and recertification requires that CERPs earn a minimum of 50 continuing education credits within the five-year period since they were last certified.
As a staff engineer specializing in water resources, Natalie Rodrigues, EIT, CPESC-IT works on a wide range of projects from stormwater management to ecosystem restoration to dam safety. Outside of the office, Natalie is an active volunteer with Engineers Without Borders (EWB), a nonprofit organization that works to build a better world through engineering projects that aid communities in meeting their basic needs.
EWB volunteers work with communities in the U.S. and throughout the world to find appropriate solutions for their infrastructure needs, including clean water supply; sanitation; sustainable energy; structures like bridges and buildings; and various agriculture essentials from irrigation systems to harvest processing. Natalie began volunteering for the organization six years ago while attending college at the SUNY College of Environmental Science and Forestry where she earned her Bachelor of Science in Environmental Resources Engineering with a focus in water resources.
Her first big volunteer project, which was done in collaboration with EWB’s Syracuse Professionals Chapter, was designing and building a system of composting latrines for an elementary school in the small town of Las Majadas, Guatemala. Natalie provided assistance on several aspects of the project, including working on a Health and Safety Plan. The completion of this project helped to prevent the spread of disease, as well as treat waste without the need for a constant water supply/sewer system. The long-lasting design also increases the health practices and hygiene of the community, creating a safer place for education.
Natalie also served as secretary of the university’s EWB chapter for two years, then became the Regional Administrator for the Northeast Regional Committee, and is now starting her third year as a Co-President of the region.
In her current role with the regional committee, Natalie helps to provide resources for members and facilitates communication between EWB Headquarters and individual chapters. She assists with various mini-conferences and workshops throughout the region and provides opportunities for members to obtain Professional Development Hours and certifications. She is also a part of the EWB’s Diversity and Inclusion Task Force and the Council of Regional Presidents.
We’re so proud to have Natalie on our team and truly value the work she does inside and outside the office.
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