ERP has a Project Team that provides strong communication and seamless project delivery. The key personnel identified below have the expertise to provide our clients with the highest level of quality, value, and technical proficiency. The level of service offered by ERP reflects the experience, commitment to quality, and dedication of our professional staff.

Trisha Elizondo

Chief Executive Officer

Ms. Elizondo has over 20 years of experience in executing and managing complex environmental compliance, remediation, and demolition projects. She has managed large-scale, multi-million dollar environmental projects in some of the most challenging technical and regulatory contexts. Her attention to detail and collaborative style works well with ERP’s client base, as well as with the regulators who oversee these complex projects. Ms. Elizondo has lead due diligence and advisory services for ERP in support of over 50GW of renewable energy transactions. Ms. Elizondo is on the board of the Association of Women in Energy and a member of the Advisory Council for the Lady Bird Johnson Wildflower Center.

Jeremy Toohey

Chief Financial Officer

Mr. Toohey has more than 17 years of accounting experience working in Fortune 500 companies in the service and manufacturing sectors. Mr. Toohey is a Certified Public Accountant with experience in tax compliance, acquisitions, divestitures, audits, and compliance. Mr. Toohey was a CFO at a nationwide home security company with over $60 million in annual revenue. His other experience includes working for International Paper where he assisted in the acquisition of Temple-Inland, as well as, the divestiture of three large U.S. paper mills. Throughout his career, Mr. Toohey has focused on process improvement and timely, accurate and useful reporting.

Brandon Richards

Vice President, Development & Advisory Services

Mr. Richards has over two decades of energy industry experience in development, technical, and project management roles. He has spent most of his career in the renewables sector, where his areas of expertise include real estate, project siting, and acquisition due diligence, as well as all stages of development. Since 2008, he has sited, divested, and evaluated thousands of proposed energy projects throughout the US and internationally. In addition, he has been involved in bringing several gigawatts of new generation to the grid across numerous markets.

Rhonda Chaffin

Director of Human Resources

Ms. Chaffin brings decades long experience in organizational development, coaching and training, compensation and employee relations. She seeks to harness the full power of ERPs most valuable assets - their people. Ms. Chaffin is dedicated to continuing ERPs commitment to safety.

Jennifer Klingshirn

Director of Operations and Culture

Ms. Klingshirn has over 13 years of experience in wind, solar, and battery project industry support and has conducted environmental and project due diligence of energy projects during various stages of development, construction, and operation throughout the US. Ms. Klingshirn has completed detailed and complex local permitting and zoning applications and associated public hearings. She has extensive experience in critical constraints and permitting analyses for proposed wind and solar projects across multiple states and has experience completing and overseeing onsite field assessments, including biological surveys, habitat assessments, and cultural resources surveys.

Jennifer Loeffler

Director of Natural Resources

Ms. Loeffler has built a strong technical foundation while developing her environmental consulting career. Focusing within the renewable energy market, Ms. Loeffler has developed experience at all levels of a project’s lifecycle, from site selection, due diligence and constraints review, permitting and regulatory coordination, to community engagement, construction oversight, operations, and decommissioning. Her greatest strengths lie in her technical ability, specifically in the execution and management of environmental studies and anticipating how new regulations can impact renewable energy projects.

Tamara Gleason, P.E.

Senior Project Manager & Demolition Specialist

Ms. Gleason is a registered Professional Engineer with over 20 years of experience in the environmental consulting field managing programs and projects, and providing technical expertise across a wide range of environmental science and engineering projects with particular emphasis in site remedial investigations, design, and remedial action in complex regulatory and stakeholder frameworks. She has project management and technical leadership experience within the railroad, petroleum, aircraft, durable goods, chemical, energy, defense, food and beverage, metals, pesticide, thermal controls, landfill, paper and redevelopment industries.

Sean Martin

Senior Project Manager

Mr. Martin brings almost 25 years of experience supporting energy, infrastructure, and commercial development projects nationwide. He supports projects across the full development lifecycle, including due diligence, siting, permitting, and construction compliance. His experience spans utility-scale generation, battery energy storage, transmission, and data center development. He has proven to be successful at advancing projects through diverse regulatory frameworks while maintaining project certainty. Mr. Martin’s approach combines technical depth with practical development insight, enabling project execution.

Dave Hazel

Land Agent Services & Construction Project Manager

Mr. Hazel began his career in meteorology while serving in the U.S. Navy as an Aerographers Mate. He applied his background in meteorology to renewable energy, developing projects across the country while studying weather patterns and designing layouts for projects from California to New York. As a project manager for several wind projects, Mr. Hazel has worked alongside local and federal officials to ensure proper permitting work was completed, and also focused on local community involvement and education. With several years of renewable energy development leadership, Mr. Hazel transitioned into a role within the renewable construction industry. As a Construction Manager, Mr. Hazel provides leadership through his variety of skill sets, and guidance while focusing on devoted safety culture and working closely with the local community.

Gina Zarnstorff

Project Manager

Ms. Zarnstorff has over 10 years of environmental consulting experience, with specialized expertise in project management for renewable energy projects. She has worked collaboratively with state, county and federal regulators to obtain environmental permits including USACE Nationwide, Individual, and General permits. She has extensive experience conducting wetland delineations, wetland functional assessments, threatened and endangered species surveys, vegetation surveys, habitat assessments and gopher tortoise relocations.

Jerry Hobbs

Senior GIS Analyst

Mr. Hobbs has amassed more than 20 years of real-world experience in mapping and geoscience. He is particularly passionate about GIS, spatial analysis, and data management, with a deep affinity for cartographic excellence. Mr. Hobbs is a determined, effective solutions developer with a diverse skill set that includes many years of hands-on experience working with multiple geospatial, design, and data management software platforms. He has extensive knowledge of geospatial technology concepts and practices; and a keen ability to absorb new information, integrate modern workflows, and utilize new technologies.

Jacob Weiss

GIS Analyst

Mr. Weiss brings over five years of professional experience in cartography, spatial analysis, and GIS database management. He is passionate about applying in-depth geospatial analysis to support effective planning and decision-making. He regularly explores and implements new approaches to data visualization and accessibility to better serve clients and internal staff.

Daniel Roberts, P.W.S.

Senior Biologist

Mr. Roberts is a Professional Wetland Scientist with significant experience in Clean Water Act compliance. He has significant experience in completing jurisdictional wetland and stream delineations, threatened and endangered species assessment surveys, environmental assessments, natural stream restoration design, and monitoring, and NEPA/SEPA. Mr. Roberts has been involved in complex projects related/associated with after the fact permitting and responding to notices of violations. Mr. Roberts has extensive experience in technical writing, permitting, and working collaboratively with regulators to ensure his client’s objectives can be reached.

Monica Downer, M.S., P.W.S., A.G.T.A.

Wetland Scientist

Ms. Downer has over 12 years experience in jurisdictional wetland and stream delineations and assessments, threatened and endangered species surveys, biological and construction monitoring, wildlife relocations, NEPA/SEPA, and natural stream and wetland monitoring. She has been involved in many projects associated with 404/401 permitting, compensatory mitigation, and mitigation banking.

Hunter Neblett

Task Manager & Staff Scientist

Mr. Neblett primarily assists with streamlining renewable energy and data center developments through all project stages, including desktop research, aquatic resource delineations, protected species surveys, constraints analyses, Phase I Environmental Site Assessments, permitting determinations and obtainment, agency coordination, construction compliance, and formal report writing. His project history of environmental planning for infrastructure, primarily related to the energy business sector, spans 30 states and a wide variety of biomes.

Robby Proctor

Task Manager & Project Scientist

Mr. Proctor has 13 years of experience as an environmental consultant and scientist. His experience includes a wide range of environmental assessments, such as Phase I Environmental Site Assessments, constraints analyses, aquatic resource delineations, SPCC plans, and compliance monitoring, as well as permitting determinations, due diligence work, and greenfield prospecting for solar, wind, and BESS projects. Mr. Proctor is also an FAA Part 107–certified unmanned aircraft remote pilot with eight years of experience conducting drone flyovers.

Alex van der Colff

Environmental Consultant

Mr. van der Colff assists with greenfield and brownfield prospecting for utility-scale solar, wind, BESS and hybrid projects as well as M&A due diligence. His work includes identifying viable land, preparing environmental constraints analyses, conducting municipal and ordinance reviews, compiling permitting matrices, and supporting landowner outreach.

Jayleen Ramirez

Staff Scientist

Ms. Ramirez has experience as an environmental scientist in solar, wind, and commercial real estate. Her experience includes critical issues analysis, wetland and waters of the U.S. delineations, protected species surveys and habitat assessments, and permitting reviews. Her education includes a combination of natural resource management and implementing sustainable practices.

Lauren Wyles

Staff Scientist

Ms. Wyles has experience as an environmental scientist in solar, wind, and battery storage. Her experience includes habitat assessments, Phase I Environmental Assessments, Wetland and Waters of the U.S. delineations, nest surveys, and wind farm bird and bat impact surveys. In recent years of her career, Ms. Wyles has seen rapid growth in her specialized field experience, conducting analyses like protected species surveys, including eagle nest surveys, tricolored bat habitat assessments, and bog turtle habitat surveys across multiple regions of the continental United States. Her formal education, which includes a Master of Science in Environmental Science from the University of North Texas, spans from Central Texas-based ecology and mammalogy to migratory bird-banding experience. Ms. Wyles is also an unmanned aircraft remote pilot that has utilized drones for various types of field work.

Emma Guest

Staff Scientist

Ms. Guest aids renewable energy development through acquisition due diligence and development support for solar, wind, and battery energy storage projects nationwide. Her work includes identifying environmental and engineering constraints, reviewing project documentation, and assessing development risks to support informed investment and acquisition decisions. Her background spans Waters of the U.S. determinations, Phase I Environmental Site Assessments, permitting and compliance, critical issues analyses, bat acoustic surveys, and habitat assessments. This breadth of experience provides a well-rounded foundation for evaluating project risks and constraints in her current role, and for translating complex technical and regulatory factors into clear, actionable insights that support project siting, design, and development strategy.

Josh Diamond, PhD, CWB®

Staff Scientist

Mr. Diamond has over ten years of experience as an Environmental Scientist, working with a wide variety of clients, especially in the energy industry. His expertise includes jurisdictional wetland and stream delineations and assessments, constraints reviews, threatened and endangered species surveys, wildlife relocations, habitat assessment, land management classification and planning, natural stream and wetland monitoring and NEPA support for infrastructure projects, through all stages of development. Mr. Diamond has published scientific research primarily related to the conservation of birds, but also including urban forestry, invasive species, remote sensing, and land use history.

John Gallander

Staff Scientist

Mr. Gallander is an environmental scientist with experience supporting wind, solar, energy storage, and industrial development. Mr. Gallander’s responsibilities include critical issues analyses, aquatic resources delineations, protected species habitat assessments, Phase 1 environmental site assessments, and migratory bird nest clearance surveys. He also brings a background in permitting and policy researcher, with expertise in renewable energy permitting across the continental United States. His academic training spans conservation and natural resource management.

Tyler Osha

Staff Scientist

Mr. Osha has experience as an Environmental Scientist, working with clients from the solar, transportation, and commercial real estate sectors. His expertise includes biodiversity assessments, protected species surveys and habitat assessments, wetland and waters of the U.S. delineations, burrow clearing surveys, and Phase I Environmental Site Assessments. His environmental consulting industry experience is primarily related to species and habitat impact in natural resources projects. His education spans ecology and biology to environmental planning and natural resource management.

Cynthia Guo

Staff Scientist

Ms. Guo serves as an Environmental Scientist assisting clients with solar, wind, and energy storage project development. Her responsibilities include assisting clients with permitting, regulatory compliance, protected species habitat assessments, wetland and aquatic resources delineations, Phase I Environmental Site Assessments (ESA), and critical issues analyses. Ms. Guo holds a bachelor’s degree in environmental science and has academic training in ecology, geology, environmental policy, and natural resource management. Her professional experience spans from wetland vegetation research to corporate sustainability.

Sam Dickinson

Staff Scientist

Mr. Dickinson serves as an Environmental Scientist assisting clients with solar, wind, energy storage project development, water, and transportation. He has experience in wetland and waters of the U.S. delineations, protected species habitat assessments, federal, state and local permitting for impacts to wetland and waters of the U.S., agency and municipality coordination, forest stand delineations and post-construction vegetation monitoring. His education spans from ecology and biology to conservation and natural resource management.

Madison Hennings

Staff Scientist

Ms. Hennings serves as an Environmental Scientist assisting clients with solar, wind, energy storage project development, telecommunications, oil and gas, water, wastewater, and natural resources. She has significant experience conducting rare, threatened, and endangered species surveys, multimedia environmental sampling and analysis, wetland and waterbody delineations, Phase I Environmental Site Assessments, critical issues analysis, and environmental due diligence, permitting, and technical reporting. Her education centered primarily around environmental science, natural resource management, and sustainability.

Brenda Benson

Land Specialist

Ms. Benson has over 12 years of experience in real estate. She has experience as a land agent in solar, wind and battery storage. Her experience includes initiating contact with landowners, organizing and delivering presentations to groups of landowners or land managers, negotiating and acquiring easements/leases, prepare and review land use documents, contracts, and legal documents, and communicating land status inventory through the use of GIS mapping tools.

Bridget Derbique

Land Specialist

Ms. Derbique has experience as a land agent in solar, wind, and battery storage. Her experience includes creating and implementing land acquisition strategies and plans for new solar and wind development sites, initiating contact with landowners, negotiating and acquiring easement/leases, prepare and review land use documents, contracts, and legal documents, and communicating land status inventory through the use of GIS mapping tools.

Felicia Sawyers

Land Specialist

Ms. Sawyers has experience as a land agent in solar, wind, and battery storage. Her experience includes creating and implementing land acquisition strategies and plans for new solar and wind development sites, initiating contact with landowners, negotiating and acquiring easement/leases, prepare and review land use documents, contracts, and legal documents, and communicating land status inventory through the use of GIS mapping tools.

Kristen Kintner

Land Specialist

Ms. Kintner brings extensive experience as a land agent specializing in renewable energy development. She has supported large-scale solar, wind, and battery storage projects through all phases of land acquisition, including strategic site control, complex negotiations, title research, and proactive landowner engagement. She holds both her RW/NAC and AAPL Renewable Energy certifications.

Michelle Kinsinger

Executive Assistant

Ms. Kinsinger has 19 years of experience in the energy sector. She has extensive experience in energy settlements, risk management system implementation, and transmission functions. Most recently, Ms. Kinsinger has assisted with due diligence reviews, conditional use permits, prospecting, landowner outreach, and lease negotiations.