skip to Main Content
Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
Meet the Team

Senior Leadership

a man wearing a suit and tie smiling at the camera

L. Todd Perry, P.G.

Principal/ Senior GeologistUnderground Storage Tank Services

L. Todd Perry is a co-founder and principal of PPM Consultants, Inc., located in the Monroe, Louisiana office. He has a broad geological background, including course work and experience in hydrogeology and environmental geology, including over 30 years of experience in the environmental field. He is registered as a Professional Geologist/Geoscientist in five states. He possesses expert knowledge of environmental regulations, including Resource, Conservation, and Recovery Act (RCRA) and the Comprehensive Environmental Response Compensation and Liability Act (CERCLA). He has been involved in numerous committees and legislative efforts to help shape environmental law, rules, and policies. He is sought out as an expert in environmental strategy and regulatory negotiations. He has managed or participated in thousands of environmental projects. In addition to his professional accomplishments, he has been a member of many charitable boards, volunteered countless hours for civic endeavors, and enjoys time with his family

a man smiling for the camera

Keith Pyron, P.G.

Principal/Senior Geologist Brownfields Redevelopment

Keith Pyron has over 32 years of experience and is a Principal and founder of PPM Consultants, Inc. Keith also serves as Principal-in-Charge for the company’s government project program. For the past 25 years, Keith has managed and overseen large task order contracts and worked with numerous remedial action projects throughout the Southeast. Projects involving Keith’s management and/or direct participation include closure of Resource Conservation Recovery Act (RCRA) surface impoundments, Remedial Investigation/Feasibility Studies of National Priorities List sites, and assessment and remediation of petroleum contaminated sites from aboveground storage tanks and underground storage tanks (USTs) and NEPA Reviews. Keith’s extensive remediation experience includes the use of 15 different technologies. Keith also brings extensive experience working with municipalities, assisting them with the Environmental Protection Agency (EPA) Brownfields program by providing grant writing, site inventories, technical oversight, and program management.

a man wearing a suit and tie smiling at the camera

Mike McCown, P.G.

Principal/Senior GeologistBrownfields Redevelopment

Mike McCown is a founding member of PPM Consultants, Inc. and has 31 years of experience in the environmental field. Mike is a registered professional geologist in three states. His technical expertise includes soil and groundwater contamination assessment and remediation, due diligence associated with real estate transactions, brownfields redevelopment, environmental studies, and regulatory compliance. Mike has a wide range of experience in the environmental field throughout the southeastern United States. He is responsible for client and regulatory agency communication, contract and regulatory negotiations; project management; quality assurance/quality control; technical review of documents, training and managing technical staff; management of day-to-day company affairs including financial management, human resources, risk management, and development of long-term business strategies. Mike resides on a mountaintop near Birmingham, whose primary passions include his family, his Christian faith, traveling the U.S in an Airstream, and numerous outdoor hobbies and pursuits.

a close up of a man wearing a suit and tie

Roman Dixon

Principal/Chief Financial Officer

As Principal and Chief Financial Officer (CFO), Roman Dixon is responsible for all of the company’s financial functions, including accounting, audit, corporate finance, and securing and maintaining banking and vendor relationships. He also oversees and manages all human resources and IT activities for PPM. His career spans more than 24 years of varied experience in financial management, business leadership, and corporate strategy. Prior to joining PPM in 2002, Roman served in the U.S. Coast Guard at a Marine Safety office in Memphis, Tennessee where he gained experience in the environmental and emergency response fields. Before leaving the Coast Guard he received a Commandant Letter of Commendation for his service.

a man wearing a suit and tie smiling and looking at the camera

Michael L. Ellison, P.E.

Principal/Senior Engineer/District ManagerSoil & Groundwater Assessment & Remediation

Michael Ellison serves as Principal/Senior Engineer and District Manager for PPM Consultants, Inc. Birmingham, Alabama, office and holds professional engineering licensure in three states. He has over 27 years of experience in the environmental field ranging from general environmental compliance to soil and groundwater contamination assessments and remedial actions. Michael has managed all aspects of these projects including, construction stormwater permitting/compliance; development of hydrogeologic assessment work plans; installation of soil borings and groundwater monitoring wells; aquifer testing and analysis; and analysis of soil and groundwater analytical data. Michael has authored many Risk-Based Corrective Action (RBCA) evaluations, utilized to assess current and future risks to human health and the environment and to request site-specific corrective action levels from appropriate regulatory agents. He has also developed corrective action plans for the remediation of soil and groundwater contamination at numerous facilities across the Southeast. Michael has extensive experience associated with remediation system installation, operation, and maintenance, equipment monitoring and optimization, and equipment demobilization upon obtaining site objectives. He has over 27 years of experience managing remedial action projects. In his free time, you can find Michael enjoying time with his wife and children or remembering those times when he used to play golf, hunt, and fish.

a man wearing a suit and tie smiling at the camera

Zane G. Hood, Jr., P.E.

Principal/Senior EngineerWater & Waste Permitting & Compliance

Zane Hood serves as a Principal/Senior Engineer and Regional Manager over PPM’s Birmingham, Mobile, Pensacola, and Orlando offices where he has full responsibility for financial and technical oversight of the offices. Zane holds professional engineering licensure in six states. He has 30 years of experience as an environmental engineer with a focus on assessment and remediation of soil and groundwater contamination and a broad range of industrial compliance and permitting. As a Principal in the firm, Zane is responsible for operations including project management, client and regulatory relationships, training, and health and safety. Other duties include business development, talent recruitment, resource allocation, annual budgeting, and strategic planning for the company. Prior to his employment at PPM, Zane was a senior project manager with an Alabama-based consulting firm where he established much of his technical expertise. In his spare time, he enjoys time with his family, travel, golf, hunting and fishing, motorcycling, and serving at his community Church.

a man wearing glasses posing for the camera

Shawn P. Ivey, P.G.

Principal/Senior Geologist/District ManagerBrownfields Redevelopment

Shawn Ivey is a Principal of PPM Consultants, Inc. and District Manager of the Monroe, Louisiana Office and has 28 years of experience in the environmental field. Shawn is a registered professional Geologist in Louisiana. His technical expertise includes soil and groundwater contamination assessment and remediation, due diligence associated with real estate transactions, brownfields redevelopment, environmental studies, risk assessments, and regulatory compliance. Shawn has a wide range of experience in the environmental field throughout the southeastern United States. He is responsible for client and regulatory agency communication, project management; quality assurance/quality control; technical review of documents, training and managing technical staff; management of day-to-day company affairs including health and safety and company operations. Shawn is the technical lead for the Monroe Office for brownfields, UST assessment, and risk assessments. Shawn resides in Calhoun, Louisiana, whose primary passions include his family, hunting, and numerous other outdoor hobbies and pursuits.

a close up of a woman

Annie McIlwain, P.E.

District Manager/Senior EngineerAir, Water & Waste Permitting & Compliance

Annie McIlwain has assisted clients in addressing environmental and health and safety (EHS) compliance and due diligence issues throughout the Southeast. Her projects have included storm water system evaluation, permitting (air, water, and waste), EHS compliance audits, and EHS compliance plans/programs (SWPPPs, SPCCs, ERPs, RMPs, PSMs, IMPs, O&M Manuals, etc.). She has been instrumental in the design and implementation of large storm water systems for clientele in the petroleum sector and in compliance permitting, plans, and assurance for clientele in the petroleum, retail, and industrial sectors.  Annie has successfully managed all environmental compliance-related issues, deadlines, and needs for numerous industrial clients, has achieved compliance for non-compliant clients, and has advocated on behalf of non-compliant clients. She has successfully negotiated with regulatory agencies on behalf of clients for extended compliance deadlines, more lenient permit requirements, alternative compliance testing approaches, and notice of violation resolutions.

a man wearing a suit and tie smiling at the camera

Charles R. Plummer, P.E., M.S.

Principal/Senior EngineerAir, Water & Waste Permitting & Compliance

Charles Plummer has over 43 years of experience and supervises 60 engineers, geologists, toxicologists, and environmental professionals involved in engineering design and specifications, feasibility studies, soil and groundwater remediation, emergency response, risk assessments, SP001 certified tank inspections, stormwater management, and pollution prevention, regulatory permitting for air and water, compliance monitoring and reporting, NEPA and wetland permitting, environmental data analysis and modeling, and compliance-related training for CMS, SPCC, SWPPP, etc. for the private, commercial, government, energy, manufacturing, and industrial markets. All project tasks are performed by an assigned project team, which is managed by a project manager with expertise in individual sectors such as oil and gas, wood products, pipeline and terminals, petroleum storage and transport, bioenergy, meat, and food processing, waste disposal, etc. Each project is tracked using the most state-of-the-art management software, which allows cost and the critical path to be monitored throughout the life of the project. Project team members and the client are kept up-to-date on the project through regular project status reports.

a man wearing a suit and tie smiling at the camera

Tim Powers, P.G.

Principal/Senior Geologist/District ManagerEnvironmental Due Diligence, Underground Storage Tank Services

Tim Powers has 37 years of experience in the environmental field. Tim is a registered professional geologist. His technical expertise includes soil and groundwater contamination assessment and remediation, due diligence associated with real estate transactions, environmental studies, regulatory compliance, industrial greenfield site development, regulatory coordination, wetland delineation coordination, cultural resource survey coordination, traffic impact study coordination, Corps of Engineers coordination and permitting, local government permitting communication and permitting, and site utility installation coordination. Tim has a wide range of experience in the environmental field throughout the southeastern United States. He is responsible for client and regulatory agency communication; project and client management; quality assurance/quality control; technical review of documents, training and managing technical staff; and office management. Tim enjoys spending time with his family, gardening, cooking, camping, and other outdoor activities.

a man wearing a suit and tie smiling at the camera

Isaac Smith

District Manager/ Environmental Compliance ManagerAir, Water & Waste Permitting & Compliance

Isaac Smith is a District Manager/Environmental Compliance Manager in PPM’s Spanish Fort office. He has over 20 years of experience in the environmental field. Isaac specializes in air permitting and compliance but his technical experience includes water and waste permitting and compliance, Risk Management Plans, and Process Safety Management. His air expertise includes air permitting, compliance reporting, emissions measurement and calculations, control device efficiency and optimization, and continuous emission measurement systems (CEMS). He has extensive knowledge of environmental regulations, including the New Source Performance Standards (NSPS), National Emission Standards for Hazardous Air Pollutants (NESHAP), and Risk Management Plans (RMP). He has performed, managed, or participated in several hundred projects involving emission measurement, air permitting, compliance reporting, and regulatory agency communication. Isaac is responsible for personnel, client, and project management; scheduling, training, and management of technical staff; quality assurance/quality control of deliverables; office marketing, sales, and financial performance; and development of sustainable growth strategies. Isaac resides in Daphne with his wife and two daughters. The family spends most of their free time on the local bays or Gulf of Mexico fishing and boating.

a woman smiling for the camera

Jeri F. Thrasher, CSP, MBA

Health and Safety Director

Jeri Thrasher is a Senior Toxicologist in PPM’s Monroe, Louisiana office and serves as the company’s Health and Safety Director with direct supervision of designated safety representatives assigned to each branch office. Jeri has 25 years of technical and management experience in the commercial, governmental, and industrial sectors with emphasis on employee health and safety in accordance with regulatory standards. Her role as the Health and Safety Director is to ensure uniformed health and safety compliance throughout the organization, which is accomplished through employee education, random and targeted observations, near-miss reporting, incident investigation and root-cause analysis, medical monitoring, statistical performance analysis and benchmarking, as well as other similar general industry practices. Jeri resides in north-central Louisiana and spends her personal time gardening, farming, and spoiling her grandchildren.

Back To Top