Whole Effluent Toxicity Testing & TIE/TRE Services for Compliance

Wastewater Treatment Plant

Persistent toxicity in wastewater effluents can place your operations at risk of exceeding Whole Effluent Toxicity (WET) limits in an NPDES permit—resulting in potential penalties, project delays, or reputational damage. At EnviroScience, we help facilities across a wide range of industries identify, resolve, and prevent effluent toxicity issues through expert Toxicity Identification Evaluations (TIEs) and Toxicity Reduction Evaluations (TREs).

What Is a TIE/TRE Evaluation?

EnviroScience Laboratory Technician Hunter Daniachew Performs TIE/TRE ServicesA Toxicity Identification Evaluation (TIE) is a structured, EPA-approved methodology used to determine the specific toxicants responsible for observed toxicity in effluents. Once the suspected source of toxicity is known, a Toxicity Reduction Evaluation (TRE) implements corrective actions to mitigate or eliminate these toxicants—ensuring regulatory compliance and long-term environmental sustainability.

Why Whole Effluent Toxicity Compliance Matters

EnviroScience NELAP-Certified LaboratoryWET testing is a key requirement under the Clean Water Act and NPDES permitting. Regulatory agencies may mandate a TIE/TRE investigation to restore compliance when toxicity is detected in effluent discharges. Without timely resolution, your organization may face:

  • Expensive enforcement actions
  • Delays in permit renewals
  • Project shutdowns or discharge limitations
  • Negative community or public perception

EnviroScience’s Proven TIE/TRE Process

With over 35 years of regulatory and laboratory experience, EnviroScience provides a full-service, stepwise TIE/TRE approach designed to address compliance targets and reduce operational disruptions efficiently.

Our process includes:

✅ Adherence to EPA toxicity testing protocols
✅ Establishing baseline toxicity through in-house WET testing
✅ Site-specific evaluations of plant operations, chemical usage, and treatment processes
✅ Data-driven recommendations to eliminate toxicity at the source
✅ Ongoing technical support throughout regulatory interactions

Customized Toxicity Solutions for Your Industry

EnviroScience NELAP-Certified Laboratory for Toxicity Testing

Our TIE/TRE services are tailored to the needs of:

  • Municipal wastewater treatment plants
  • Industrial and manufacturing facilities
  • Chemical processors
  • Power generation stations
  • Mining and extraction operations

No matter your industry, we help you meet your discharge permit requirements and minimize the risk of costly fines or shutdowns.

Case Study: How We Helped a Client Avoid Six-Figure Penalties

EnviroScience Laboratory Technician Performing TIE/TRE Services

One industrial facility faced recurring toxicity exceedances that jeopardized its permit renewal. Within 90 days of initiating a TIE/TRE with EnviroScience, we identified the key contributors to effluent toxicity and recommended targeted process adjustments.

The result: complete elimination of exceedances and regulatory approval—without costly plant upgrades.

FAQs: TIE/TRE and Whole Effluent Toxicity Testing

Q: What is the difference between a TIE and a TRE?
A: TIE identifies the suspected toxicants responsible for noncompliance. A TRE follows up by applying and evaluating corrective actions to reduce or eliminate that toxicity.

Q: Why would my facility need a TIE or TRE?
A: If your discharge fails a WET test or shows persistent toxicity in bioassay results, regulators may require a TIE/TRE to investigate and correct the issue.

Q: How long does the TIE/TRE process take?
A: The timeline varies, but most initial TIE evaluations and recommendations are completed within a few weeks. Ongoing support is provided as necessary during the implementation of the TRE corrective action.

Q: What regulations require TIE/TRE testing?
A: EPA and state agencies require TIE/TRE under the Clean Water Act when WET testing indicates recurring or unexplained toxicity in effluent discharges.

Get Ahead of Compliance Issues—Contact EnviroScience Today

Don’t wait for a permit violation to take action. EnviroScience’s expert Laboratory Services team, led by Director of Laboratory Services Jennifer Vydra, is ready to help you navigate your TIE/TRE needs with confidence and precision.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Proposed ESA Changes and What They Mean for Your Project

As regulatory changes continue to unfold in 2025, another high-impact proposal is poised to reshape how environmental reviews are conducted nationwide: a move to significantly scale back habitat protections under the Endangered Species Act (ESA). At EnviroScience, we stay ahead of such developments so our clients—especially those managing federally funded infrastructure and development projects—can make informed, confident decisions.

In this article, we break down the proposed rule, examine its implications, and share how our team will continue to support endangered species compliance no matter how the regulatory environment evolves.

What’s Changing Under the Endangered Species Act?

On April 16, 2025, the U.S. Fish and Wildlife Service and the National Marine Fisheries Service proposed a rule to rescind the regulatory definition of “harm” under the ESA. This would remove habitat modification from the scope of what constitutes prohibited “harm” to listed species—a major shift from longstanding policy. If finalized:

  • Habitat destruction would no longer be considered harm, even if it affects species’ ability to breed, feed, or shelter
  • Regulatory oversight for protecting critical habitat areas could be significantly weakened

Read about the proposed rule here:

https://www.federalregister.gov/documents/2025/04/17/2025-06746/rescinding-the-definition-of-harm-under-the-endangered-species-act

Implications for Environmental Review and Compliance

While this rule is still under review and open to public comment, it has major implications for:

  • Endangered species permitting
  • NEPA and ESA coordination
  • Biological assessments and federal consultations

Although this proposal may appear to ease regulatory burdens for developers, it could increase legal risks, especially if litigation arises over how “harm” is interpreted in sensitive or contested habitats. Inconsistent application of these changes across agencies and courts may also complicate project planning and approvals.

How EnviroScience Ensures Endangered Species Compliance

EnviroScience remains committed to helping you navigate endangered species protections under any regulatory framework. Our expertise spans ecological science, environmental law, and interagency coordination.

Threatened & Endangered Species Surveys

We conduct comprehensive habitat assessments and field surveys to:

  • Detect presence of listed species
  • Evaluate potential project impacts
  • Provide mitigation guidance that aligns with ESA, NEPA, and U.S. Army Corps of Engineers requirements

Even if habitat protections are scaled back under federal definitions, our clients benefit from documentation that supports:

  • Legal defensibility
  • Permit application success
  • Stakeholder and community transparency

Environmental Compliance Services

From early-phase planning through post-construction monitoring, we help clients anticipate and meet environmental compliance needs—even as laws change.

Should I Adjust My Project Plans?

For now, the rule is only proposed—it is not yet law. We recommend that clients:

  • Continue existing species survey protocols
  • Maintain a precautionary approach where habitat conflicts may arise
  • Consult early with environmental specialists (like us!) to understand risk exposure

A change in regulation doesn’t remove a project’s need for scientific accountability, public transparency, or due diligence—especially on federal, DOT, or grant-funded projects.

Stay Informed with Expert Environmental Consultants

EnviroScience will continue to track the ESA rule and interpret how it may affect permitting processes, fieldwork standards, and agency consultation. No matter the outcome, our clients can count on accurate guidance, streamlined project support, and environmental solutions backed by science.

Contact us today to discuss how this proposed rule may affect your project or to schedule a Preliminary Site Assessment.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Volunteers Wanted for 2025 Spring River Cleanup

It’s time for our 2025 Spring River Cleanup!

Volunteers Participate in EnviroScience's Corporate Responsibility Committee-led Biannual Little Cuyahoga River Cleanup Event

For over 20 years, our Corporate Responsibility Committee (CRC) has hosted a biannual river cleanup event to help fish out debris from the Little Cuyahoga River in Akron, Ohio. This spring’s event is slated to take place on Saturday, April 19, 2025, from 9:00 am to 12:00 pm, and we’re looking for volunteers of all ages to help us in this effort.

This is an employee-led tradition that EnviroScience has spearheaded since 2002—bringing EnviroScience employees, family members, loved ones, and community members together to remove trash from the Little Cuyahoga River and the Ohio & Erie Canal while raising awareness of the litter problem in our local streams.

This has always been a fun event; all ages are welcome, and we need all the help we can get!

Here’s what you need to know

Volunteers Participate in EnviroScience's Corporate Responsibility Committee-led Biannual Little Cuyahoga River Cleanup EventWho: Anyone willing to help! We’ve had volunteers of all ages at this biannual event.

When: Saturday, April 19, 2025, from 9:00 am to 12:00 pm

Where: Mustill Store, 57 West North Street, Akron, Ohio 44304 (Check-in at the tables)

What to Wear: Old clothes and shoes you don’t mind getting wet/dirty, and waders or rubber boots if you have them. (We may have extra waders and rubber boots for those who don’t have them.)

Registration: No formal registration is necessary; however, adults will be required to sign a waiver on-site. Children under the age of 18 must be accompanied by an adult who is authorized to sign the waiver on their behalf.

Questions: Any questions should be directed to Michael Liptak.

EnviroScience will provide gloves, snacks, and drinks.


Join in on the fun as we help clean up our local river!

We hope to see you there on Saturday, April 19, 2025.

Who knows what we’ll find this year? 


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Ecological Uplift: Coldwater Stream & Habitat Restoration

What Is Ecological Uplift?

Ecological uplift refers to the measurable improvement of habitat quality, water quality, and overall ecosystem function following environmental restoration. At Veterans Legacy Woods, this principle guided every aspect of our stream and habitat restoration work—transforming a former golf course into a thriving natural system.

Stream Restoration in Ohio’s Veterans Legacy Woods

EnviroScience's Ecological Restoration Team Provides Ecological Uplift through Coldwater Stream & Habitat Restoration at Veterans Legacy WoodsLocated in Newbury Township, Geauga County, Veterans Legacy Woods is a public park owned and managed by the Geauga Park District. Once a golf course, the site has been reimagined as a dynamic ecosystem supporting aquatic and terrestrial wildlife.

EnviroScience worked closely with the Geauga Park District team, alongside RiverReach Construction and GPD Group, to implement a restoration plan designed to achieve long-term ecological uplift. Our team led the ecological design and construction of a coldwater stream, sourced from a natural spring, along with enhancements to the wetland and riparian areas.

Coldwater Stream Construction for Habitat and Water Quality

EnviroScience's Ecological Restoration Team Provides Ecological Uplift through Coldwater Stream & Habitat Restoration at Veterans Legacy Woods

The project’s centerpiece is a 1,500-linear-foot coldwater stream built using natural channel design techniques. This spring-fed system was engineered to provide consistent base flow, cool temperatures, and habitat features that support sensitive aquatic species.

Key design elements include:

  • Rocky substrates for macroinvertebrate colonization
  • Leaf packs and woody debris to support food web development
  • A shaded, meandering channel for temperature regulation and hydrologic stability

This headwater stream restoration represents a rare opportunity in Ohio to establish high-quality coldwater habitat with long-term ecological potential.

Enhancing Wetlands to Support Ecological Uplift

In addition to stream construction, two new wetlands were built to enhance site hydrology, promote nutrient uptake, and expand aquatic habitat. These wetlands contribute to overall ecological uplift by increasing biodiversity and improving water quality.

The design supports the growth and resilience of wetland vegetation while integrating with the site’s new hydrologic regime.

Riparian Reforestation for Habitat and Stream Health

EnviroScience's Ecological Restoration Team Provides Ecological Uplift through Coldwater Stream & Habitat Restoration at Veterans Legacy WoodsTo stabilize streambanks and restore native plant communities, EnviroScience’s vegetation services team reforested approximately 9.5 acres of riparian buffer. More than 2,400 native trees and shrubs were installed, selected based on soil and moisture conditions to ensure long-term survivability.

This reforestation effort:

  • Enhances riparian habitat complexity
  • Improves stream shading and temperature control
  • Provides critical food and cover for birds, pollinators, and small mammals

Invasive Species Management to Protect Restoration Gains

Invasive plants, such as reed canary grass and purple loosestrife, were treated using invasive species management techniques, ensuring that native plants can establish successfully.

Our team’s long-term stewardship plan includes mechanical control, selective herbicide treatment, and ongoing monitoring to support the integrity of restored habitats.

A Showcase of Park Restoration and Public Benefit

EnviroScience's Ecological Restoration Team Provides Ecological Uplift through Coldwater Stream & Habitat Restoration at Veterans Legacy WoodsVeterans Legacy Woods is more than a restoration site—it’s a vibrant, visitable natural area within the Geauga Park District. Public trails now weave through reforested slopes, emergent wetlands, and the newly built stream, offering a firsthand look at how ecological restoration enhances public lands.

This project exemplifies what is possible when park districts, restoration professionals, and ecologists collaborate to rewild formerly altered landscapes for long-term functionality and public benefit.

Visit the Site and Learn More

We invite you to visit Veterans Legacy Woods this spring or summer to explore the restored habitat and see the coldwater stream restoration in action. Experience the results of science-based restoration designed for ecological uplift.

To learn more about how EnviroScience can support your restoration goals, visit our Ecological Restoration Services page.


Frequently Asked Questions

What is ecological uplift in restoration projects?
Ecological uplift refers to the measurable improvements in ecosystem function, habitat quality, and biodiversity that result from intentional restoration activities. It’s a core goal of many stream, wetland, and habitat projects.

What makes a coldwater stream different from other streams?
Coldwater streams maintain lower temperatures year-round, typically due to spring-fed sources or shaded environments. They support specialized aquatic species, including sensitive macroinvertebrates and fish.

Why is stream restoration important in Ohio?
Many of Ohio’s headwater streams have been historically altered or degraded. Stream restoration improves water quality, stabilizes hydrology, promotes biodiversity, and facilitates the reconnection of ecosystems in a changing climate.

Can the public visit Veterans Legacy Woods?
Yes! Veterans Legacy Woods is open to the public and managed by the Geauga Park District. Visitors can enjoy trails, restored natural areas, and seasonal blooms throughout the park.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




NELAP-Certified Toxicity Testing Laboratory Services

NELAP-Certified Toxicity Testing from EnviroScience

EnviroScience NELAP-Certified Laboratory Toxicity Testing Technician When compliance is at stake, data quality matters. At EnviroScience, our NELAP certification for toxicity testing demonstrates our commitment to generating reliable, traceable data that meets the highest regulatory standards.​

Our environmental laboratory has maintained uninterrupted accreditation under the National Environmental Laboratory Accreditation Program (NELAP), administered by The NELAC Institute (TNI), since 2023. This distinction reflects the technical rigor and quality systems that power our laboratory services.​

What Is NELAP Certification?

EnviroScience NELAP-Certified Laboratory Toxicity Testing on C. dubia

The National Environmental Laboratory Accreditation Program (NELAP) sets a nationwide standard for environmental lab performance. Built on the TNI Environmental Laboratory Sector standards and aligned with ISO/IEC 17025, NELAP outlines rigorous requirements for:​

  • Sample handling and chain of custody​
  • Analytical method validation and documentation
  • Data evaluation and reporting procedures​
  • Staff qualifications and annual ethics training​
  • Ongoing performance monitoring through proficiency testing​

Being NELAP-certified signals that a lab can produce scientifically sound and legally defensible results for environmental applications.​

How EnviroScience Earned Its Accreditation

EnviroScience NELAP-Certified Laboratory Toxicity Testing on Female Fathead Minnow

To achieve certification, our team underwent a comprehensive overhaul of our internal documentation and procedures. We updated more than 40 Standard Operating Procedures (SOPs) and our lab-wide Quality Manual to reflect NELAP criteria. Each SOP addresses the complete workflow, including instrumentation, calibration, data validation, and quality control.​

We also maintain:

  • Annual data integrity and ethics training for staff​
  • Participation in third-party proficiency testing programs​
  • Strict documentation for traceability from sample receipt to final report​
  • Minimum education requirements of a bachelor’s degree for all lab technicians​

These practices ensure the reliability of our certified toxicity testing services and our readiness to meet evolving regulatory demands.​

Scope of Our NELAP Certification

EnviroScience NELAP-Certified Laboratory Toxicity Testing Technician

EnviroScience’s NELAP accreditation applies specifically to toxicity testing—a service area where state or federal agencies often require accreditation. Our certification guarantees defensible results for clients navigating:​

While we offer a broad array of environmental analyses, toxicity testing is where the NELAP standard is most applicable, and where we’ve focused our investment in certification and continual improvement.​

When to Use NELAP-Certified Toxicity Testing

Our accredited toxicity testing supports several high-demand services across EnviroScience:​

EnviroScience NELAP-Certified Laboratory Toxicity Testing Technician Lab Coats

ECOLOGICAL RISK ASSESSMENT
NELAP-certified data plays a critical role in quantifying potential risks to human and ecological health. It provides the foundation for modeling, decision-making, and mitigation planning.​

WATER QUALITY MONITORING
Toxicity testing is a key component in meeting NPDES permit and TMDL requirements. Our lab delivers reliable toxicity test results to support comprehensive monitoring programs.​

LABORATORY & ANALYSIS SERVICES
Our full-service environmental laboratory offers sediment analysis, algal identification, and more. While not all services fall under our NELAP certification, clients benefit from the same rigorous internal quality systems.​

Why Work With a NELAP-Certified Toxicity Testing Lab?

EnviroScience NELAP-Certified Laboratory Toxicity Testing TechnicianChoosing a NELAP-accredited laboratory helps ensure:

  • Data is traceable, verifiable, and audit-ready​
  • Testing meets the expectations of federal and state regulators​
  • Results are valid for use in permitting, enforcement, and litigation​
  • Your environmental project stays on track and in compliance​

Partner With EnviroScience for Certified Data You Can Trust

EnviroScience NELAP-Certified Laboratory Toxicity Testing TechnicianIf your project involves toxicity testing, choose a laboratory with proven credentials.

EnviroScience’s NELAP-accredited laboratory provides the data confidence required for environmental compliance and decision-making.​

Visit our Laboratory & Analysis Services page to explore how certified toxicity testing can support your goals.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Cam Turney, GISP, Expands EnviroScience GIS Expertise

EnviroScience is proud to announce that Cam Turney, GISP, has achieved his Geographic Information Systems Professional (GISP) certification from the GIS Certification Institute (GISCI). This distinguished credential validates Cam’s expertise in geospatial analysis, GIS mapping, remote sensing, and data management, reinforcing the strength and depth of our nationally recognized environmental consulting services.

Elevating GIS Expertise at EnviroScience

EnviroScience Lead GIS Analyst Cam Turney, GISP

With the GISP designation, Cam brings an advanced level of proficiency in spatial data visualization, LiDAR modeling, and CAD-based site analysis—critical tools that drive precision in environmental assessments, wetland delineations, habitat mapping, and regulatory compliance projects.

Since joining EnviroScience in 2022, Cam has been instrumental in providing high-resolution GIS solutions that support government agencies, engineering firms, municipalities, and conservation organizations.

Earning the GISP certification requires extensive professional experience, technical expertise, and a commitment to ongoing education, ensuring that our GIS team remains at the forefront of industry advancements. Cam’s achievement not only enhances our geospatial capabilities but also strengthens our ability to deliver cutting-edge, data-driven environmental solutions to clients nationwide.

How GIS Enhances Environmental Science & Consulting

At EnviroScience, GIS technology is a cornerstone of our environmental services, allowing us to analyze spatial data with unmatched accuracy. Through drone mapping, satellite imagery, and machine learning applications, our GIS team translates raw data into actionable insights—helping clients make informed decisions regarding land-use planning, environmental restoration, and regulatory compliance.

Our GIS Services

  • Advanced Spatial Analysis & Environmental Modeling – We assess land use, habitat distribution, water quality, and climate change impacts to help clients identify trends and mitigate risks.
  • High-Resolution Mapping & Data Visualization – Our team produces interactive maps and 3D models for regulatory agencies, engineering firms, and decision-makers.
  • Remote Sensing, LiDAR, and Drone Mapping – We capture detailed site data for wetland delineations, habitat assessments, infrastructure planning, and environmental impact studies.
  • Regulatory Compliance & Permitting Support – Our GIS experts assist in environmental reporting, protected species mapping, and permitting documentation, streamlining compliance for agencies and developers.
  • Custom GIS Applications & Database Development – We create specialized GIS tools, dashboards, and real-time data management solutions to optimize workflows for municipalities, engineering firms, and natural resource agencies.

Who Benefits from EnviroScience’s GISP Expertise?

  • Government Agencies – Providing GIS-driven solutions for regulatory mapping, environmental monitoring, and conservation initiatives.
  • Engineering Firms & Developers – Enhancing site planning, permitting processes, and environmental impact assessments.
  • Municipalities & Regional Planning Organizations – Supporting sustainable land-use planning, stormwater management, and infrastructure development.
  • Conservation Groups & Nonprofits – Assisting with ecological restoration planning, habitat mapping, and protected species monitoring.
  • Utilities & Transportation Departments – Offering GIS-based environmental analysis for pipeline routing, watershed management, and large-scale infrastructure projects.

With Cam Turney’s GISP certification, EnviroScience continues to lead in GIS innovation, providing clients with unparalleled geospatial solutions that drive informed environmental decision-making.

Join us in congratulating Cam on this outstanding achievement!


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Luke Fultz Earns Federal Recovery Permit for Endangered Bats

At EnviroScience, we take pride in the expertise and dedication of our team of bat biologists. We’re excited to announce that Luke Fultz, B.S., Ecologist & Bat Project Manager, has earned a Federal Recovery Permit from the U.S. Fish and Wildlife Service (USFWS) for three federally protected bat species:

  • Indiana bat (Myotis sodalis)
  • Northern long-eared bat (Myotis septentrionalis)
  • Gray bat (Myotis grisescens)

This significant achievement highlights Luke’s expertise in endangered bat conservation and enhances EnviroScience’s ability to deliver industry-leading endangered bat survey services.

Why Federal Recovery Permits Matter

A Federal Recovery Permit is required to handle and survey federally listed bat species. These permits are granted to qualified biologists who have demonstrated proficiency in bat identification, safe handling techniques, and habitat assessments. By obtaining this permit, Luke joins a select group of bat experts authorized to conduct studies that support conservation efforts and regulatory compliance.

About Luke Fultz: A Leader in Bat Conservation

EnviroScience Ecologist & Bat Project Manager Luke FultzLuke brings extensive experience in Threatened and Endangered (T&E) species surveys, habitat assessments, and environmental permitting. Since joining EnviroScience in 2024, he has played a key role in managing bat-related projects, ensuring regulatory compliance for clients across industries, including transportation, energy, private development, and conservation initiatives.

Luke earned a B.S. in Wildlife Ecology & Conservation from Juniata College, where he specialized in Environmental Science, Ecology, and Wildlife Biology. With years of experience conducting biological monitoring, transportation planning, and natural resource assessments, he has developed a strong foundation in conservation strategies and regulatory compliance.

Passionate about bat conservation, Luke collaborates with EnviroScience’s team of renowned bat biologists to deliver cutting-edge solutions that protect critical habitats while supporting client needs.

EnviroScience’s Endangered Bat Surveys and Services

With Luke’s permit and our team of experienced bat biologists, EnviroScience is equipped to conduct a full suite of bat surveys and consulting services to help clients navigate regulatory requirements and protect critical bat habitats. Our services include:

  • Mist-Net and Acoustic Surveys – Identifying bat species presence to ensure compliance with the Endangered Species Act (ESA) and state regulations.
  • Habitat Assessments – Evaluating roosting, foraging, and hibernation sites to inform conservation planning and land development.
  • Radio Telemetry Tracking – Monitoring bat movements to assess habitat use and migration patterns.
  • Hibernacula Surveys – Conducting winter cave and mine assessments to evaluate bat populations and hibernation conditions.
  • Bat Exclusion and Mitigation – Implementing solutions that balance environmental conservation with project development.

These services are essential for industries such as transportation, energy, forestry, and development, ensuring compliance with the Endangered Species Act (ESA) while supporting responsible land use.

Partner with EnviroScience for Expert Bat Surveys

As regulations surrounding bat conservation continue to evolve, having an experienced team on your side is crucial. EnviroScience’s bat experts help clients meet environmental compliance requirements while promoting the protection of these vital species.

Learn more about our endangered bat surveys or contact us to discuss how we can assist with your project.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Christina Voorhees Promoted to Director of Natural Resources

Pictured: Dr. Voorhees, EnviroScience is pleased to announce the promotion of Christina Voorhees, Ph.D., CWB®, to Director of Natural Resource Services at EnviroScience

Feb. 28, 2025 — Stow, Ohio — EnviroScience is pleased to announce the promotion of Christina Voorhees, Ph.D., CWB, to Director of Natural Resources. Dr. Voorhees, who previously served as a terrestrial operations manager at EnviroScience, brings over 25 years of expertise in wildlife management, natural resource planning, and regulatory agency consultation.

In her new role, Dr. Voorhees will lead EnviroScience’s Natural Resources practice area, overseeing a team of environmental professionals dedicated to providing expert ecological consulting and regulatory guidance. She will continue to expand the firm’s impact by strengthening client relationships, optimizing project coordination, and driving innovation in natural resource management.

Since joining EnviroScience in 2022, Dr. Voorhees has been instrumental in managing complex projects involving threatened and endangered species, guiding clients through state and federal agency consultations, and driving business development efforts. Her extensive background in both the private and public sectors has allowed her to develop creative solutions that balance conservation needs with resource use and development goals.

“Christina’s leadership, experience, and ability to navigate complex environmental regulations make her the perfect fit for this role,” said Kevin Puls, general manager of EnviroScience. “She has demonstrated a remarkable ability to assist clients in successfully negotiating the environmental review process while maintaining a strong commitment to conservation. We are excited to see her continue to lead and expand our Natural Resources practice area.”

Dr. Voorhees holds a B.S. in Wildlife Science from Virginia Tech, an M.S. in Forest Resources from Penn State University, and a Ph.D. in Recreation, Park, and Tourism Management from Penn State University. Her graduate research focused on the human dimensions of natural resources, with an emphasis on how social psychological factors influence hunting participation and perceptions of white-tailed deer. Throughout her career, she has worked extensively with species such as bats, birds, elk, and white-tailed deer, with a current focus on assisting clients with raptor and grassland bird concerns.

For more information about our Natural Resources practice area, visit our Ecological Services and Threatened & Endangered Species webpages.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




Navigating NEPA Regulatory Changes in 2025

As a trusted environmental consulting firm with decades of experience, EnviroScience is committed to helping our clients adapt to shifting regulatory landscapes. The recent rollback of the Council on Environmental Quality’s (CEQ) NEPA implementing regulations marks a critical inflection point in how federal environmental reviews are conducted. Our goal is twofold: to educate stakeholders on what these changes mean for their federally funded projects, and to affirm our continued role as your expert partner in environmental compliance.

Bridge construction site with crew and heavy equipment, illustrating federal infrastructure projects undergoing NEPA environmental review.

How NEPA Regulatory Changes Impact Your Federal Projects

On January 20, 2025, President Donald Trump issued Executive Order 14154, Unleashing American Energy, which directed CEQ to rescind its longstanding NEPA implementing regulations under 40 CFR 1500–1508. These regulations, in place since 1978, served as the guiding framework for environmental impact assessments and approvals.

On February 19, 2025, CEQ announced an Interim Final Rule (IFR) to carry out this directive. The rule was published in the Federal Register on February 25, 2025, initiating a 30-day public comment period that will run through March 27. While the IFR is set to remove CEQ’s NEPA regulations from the Code of Federal Regulations, it has not yet gone into effect. Agencies are expected to develop their own NEPA implementing procedures by February 2026, as they await further CEQ guidance.

This regulatory vacuum introduces significant uncertainty. While the NEPA statute remains unchanged, project developers should anticipate variability in how different federal agencies interpret and apply NEPA obligations in the coming months.

Environmental consultant conducting wetland delineation survey in forested wetland, supporting NEPA permitting efforts.

What Executive Order 14154 Means for Environmental Review

These changes mean:

  • NEPA compliance is no longer centrally defined—each federal agency will now create its own NEPA procedures
  • Agencies must rely on pre-existing NEPA practices until new ones are in place
  • A high likelihood of litigation exists, particularly if reviews are perceived as insufficient
  • Key definitions—like “major federal action” or “significant impact”—may be narrowed, affecting which projects trigger NEPA reviews at all

For clients managing federally funded infrastructure, energy, transportation, or development projects, this creates new compliance challenges.

How EnviroScience Supports NEPA Compliance

EnviroScience continues to serve as a proactive advocate for clients amid regulatory change. We work closely with federal, state, and local agencies to ensure your project receives timely and effective environmental review.

Environmental Compliance Services
Our experts interpret evolving NEPA requirements and coordinate directly with agency reviewers. We help you stay ahead of changes while minimizing project delays and costs.

Wetland Delineation & Permitting
We provide field-tested expertise in wetland delineation and permitting. Our team ensures that jurisdictional determinations are accurate and permit applications are robust, even as definitions of “waters of the U.S.” continue to shift.

Threatened & Endangered Species Surveys
Whether NEPA-triggered or permit-related, our ecological surveys help identify the presence of federally protected species, supporting the development of responsible project plans. As discussions around habitat protection evolve—including potential changes to the definition of “harm” under the Endangered Species Act—our team remains vigilant. We will continue to assess and adjust survey protocols in accordance with any final rule changes to ensure full compliance.

Environmental Inspection Services
We oversee compliance throughout your project lifecycle, helping you meet evolving documentation and monitoring standards.

Stormwater Management
Our stormwater team ensures you stay compliant with Clean Water Act provisions during construction and operation.

EnviroScience staff conducting environmental field inspection using a tablet, representing NEPA site review practices.

Stay Ahead of NEPA Regulatory Changes with EnviroScience

We are actively monitoring NEPA regulatory changes, including CEQ guidance, agency-specific rulemaking, and litigation outcomes. Our team is prepared to interpret and apply emerging procedures to keep your projects compliant and on schedule.

Read the CEQ’s implementation memo here: CEQ Guidance Memo PDF

Questions About Your Project?

Whether you’re developing a new project or navigating the next step in permitting, we’re here to help. Our regulatory expertise, technical excellence, and strong agency relationships make EnviroScience the ideal partner for federally funded projects during this transition.

Contact us today to talk with one of our compliance specialists.


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring); emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; sustainability services; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.




ACRT Services Announces CFO Brad Schroeder as Successor to CEO Michael Weidner Upon Retirement

ACRT Services announces the retirement of Michael Weidner

Feb. 21, 2025 – Stow, Ohio – ACRT Services announced this week that Michael Weidner, Chief Executive Officer, has retired, effective Feb. 18, 2025. The Board of Directors has appointed Brad Schroeder, currently serving as Chief Financial Officer, as the interim CEO, effective immediately. 

For nearly three decades, Weidner has been a driving force behind ACRT Services, leading the organization with vision, integrity, and a commitment to its employees and customers. Under his leadership, ACRT Services has significantly expanded, cementing its reputation as a leading provider of independent vegetation management, field services, and environmental consulting. 

Weidner was instrumental in the creation of the ACRT Services family of companies, leading ACRT as an independent utility vegetation management consulting company when the ESOP was established. He then spearheaded the company’s growth strategy, including: 

  • 2015: Acquisition of Bermex, expanding capabilities in smart meter transitions, meter reading, field operations, and damage prevention. 
  • 2018: Formation of ACRT Services, Inc., along with the creation of ACRT Pacific, broadening vegetation management expertise. 
  • 2021: Acquisition of EnviroScience, strengthening environmental consulting, restoration, and compliance solutions. 
  • 2024: ACRT celebrates 40 years of industry leadership, remaining the largest independent, employee-owned utility vegetation management company in the nation. 

His leadership propelled ACRT Services’ growth across multiple service lines, ensuring financial stability, operational excellence, and long-term sustainability. His commitment to employee ownership has empowered employees to take ownership of their work, fostering a culture of accountability, innovation, and best-in-class service. 

As ACRT Services embarks on this transition, Brad Schroeder steps into the interim CEO role, bringing extensive financial and strategic expertise. Since joining ACRT as CFO in 2012, Schroeder has played a pivotal role in shaping the company’s financial strategy, driving operational excellence, and fostering long-term growth. His deep understanding of ACRT Services’ mission and values will ensure a seamless transition and continued momentum as ACRT Services advances its commitment to independence, innovation, and service excellence. 

“We are deeply grateful for Mike’s leadership and the foundation he has built for ACRT Services,” said Don Esch, Chairman of ACRT Services Board of Directors. “His legacy is one of strategic growth, employee empowerment, and industry leadership. As we look to the future, Schroeder’s financial acumen, leadership experience, and dedication to ACRT Services’ mission make him the right person to guide us in our search for the next CEO.” 

This leadership transition reflects ACRT Services’ ongoing commitment to independence, innovation, and service excellence. As the company moves into its next chapter, it remains focused on delivering best-in-class solutions to its customers while ensuring a smooth transition for employees, customers, and partners. 

About ACRT Services 

ACRT Services offers expert independent consulting solutions to utilities and associated organizations throughout the United States, including vegetation management consulting, ecological consulting, damage prevention, arborist training, utility metering services, and more. ACRT Services supports four wholly-owned subsidiaries — EnviroScience, Bermex, ACRT Pacific, and ACRT. To learn more about ACRT Services, visit services.acrt.com.