Leadership Team

Principal/ CFO

ROMAN DIXON

As principal and chief financial officer (CFO), Mr. 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, Mr. Dixon served in the U.S Coast Guard at a Marine Safety office in Memphis, TN 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.

Principal/ District Manager

MICHAEL ELLISON, P.E.

Mr. Ellison serves as Principal/Senior Engineer and District Manager for PPM Consultants, Inc., Birmingham, Alabama, office.  He has over 25 years of experience in the environmental field ranging from general environmental compliance to soil and groundwater contamination assessments and remedial actions. Mr. Ellison 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. Mr. Ellison 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. Mr. Ellison 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 22 years of experience managing remedial action projects.  Mr. Ellison is also responsible for the day to day operations of the Birmingham, Alabama office.

District Manager

AMY GUILFOYLE

Ms. Guilfoyle has 20 years of professional experience as an environmental scientist and serves as the District Manager in PPM’s Orlando, Florida office.  Ms. Guilfoyle’s site experience has included petroleum and hazardous waste site assessments; brownfield projects, Phase I/II Environmental Site Assessments; remedial system installation/operation; National Pollution Discharge Elimination System permitting; compliance; and overseeing field sampling per FDEP SOPs.  She has managed large, high-profile contamination assessments and remedial implementations at gas stations; commercial and industrial businesses; agricultural properties; and roadway cooridors.  She acts as the Project Manager for FDEP Petroleum Restoration Program projects and oversees the City of Pahokee Brownfields Assessment Grant implementation, City of Sanford Environmental Services Contract, and the Brevard County Environmental Services Contract.  Ms. Guilfoyle was elected Chair of the Metropolitan Environmental Training Alliance in 2021 and serves on the Seminole County Port Authority Board and Back to Nature Wildlife Refuge Advisory Board.

Principal/Senior Engineer

ZANE G. HOOD, JR., P.E.

Mr. 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.  He has 29 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, Mr. Hood is responsible for operations including project management, client and regulatory relationships, training, and health and safety. Other duties include business development, resource allocation, annual budgeting and long term planning for the company.  Prior to his employment at PPM, Mr. Hood was a senior project manager with an Alabama-based consulting firm where he established much of his technical expertise.

Principal/ District Manager

SHAWN P. IVEY, P.G.

Mr. Ivey is a Regional Manager and Principal in PPM’s Monroe, Louisiana office. The regional area managed by Mr. Ivey includes two offices in Louisiana and one office in Mississippi.  With over 25 years of experience, Mr. Ivey supervises over 40 engineers, geologists, toxicologists, and environmental professionals involved in over 200 private, commercial, government, and industrial projects involving site investigations, aquifer characterization, risk assessments, corrective action plans, remedial system design, regulatory permitting, compliance monitoring and reporting, and review and sealing of design drawings, construction specifications and contractor bid documents.

Mr. Ivey served as the Project Director/Project Manager on numerous projects throughout his 25-year career. The following projects further support Mr. Ivey’s experience and capability to serve as the project’s Project Manager.  Mr. Ivey has also been involved in preparing training manuals for QA/QC procedures as well as developing training presentations and media for in-house use.  Mr. Ivey has also served as a board member for the Motor Fuel Trust Fund Advisory Board for two terms.

Principal/ Senior Geologist

MIKE McCOWN, P.G.

Mr. McCown is a founding member of PPM, and has 31 years of experience in the environmental field.  Mr. McCown’s expertise includes environmental studies, soil and groundwater contamination assessment and remediation, due diligence associated with real estate transactions, brownfields redevelopment, regulatory compliance, and aquifer studies.  Mr. McCown has a wide range of experience in the environmental field throughout the southeastern U.S., and is responsible for client and regulatory agency communication, contract and regulatory negotiations, project management, quality assurance/quality control, technical review of documents, work plan preparation, training and managing technical staff, management of day-to-day company affairs, and development of long term business strategies.  Mr. McCown authored many of the technical standards and QA/QC procedures used by PPM.  Mr. McCown serves as the client and regulatory liaison on complex projects throughout the firm.

District Manager

ANNIE McILWAIN, P.E.

Ms. 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.  Ms. McIlwain 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.

Principal/ Senior Geologist

L. TODD PERRY, P.G.

Mr. Perry is a co-founder and principal of PPM Consultants, located in PPM’s Monroe office.  Mr. Perry has 32 years of experience in the environmental field related to petroleum hydrocarbon issues such as environmental assessments, groundwater monitoring and remediation.  He also has project experience in hazardous waste, solid waste and storm water issues.  He possesses expert knowledge of environmental regulations, including Resource, Conservation and Recovery Act (RCRA), Comprehensive Environmental Response Compensation and Liability Act (CERCLA), and underground storage tanks (USTs).  Mr. Perry has a broad geological background including course work and experience in hydrogeology and environmental geology.  He has managed or participated in hundreds of environmental projects.

Principal/ Senior Engineer

CHARLES R. PLUMMER, P.E.

Mr. Plummer has over 39 years of experience and supervises 60 engineers, geologists, toxicologists, environmental professionals, and computer programmers involved in the 500 plus private, commercial, government, and industrial projects involving site assessments, aquifer characterization, risk assessments, corrective action plans, groundwater and contaminant transport modeling, remedial system design, land development design and wastewater treatment design, regulatory permitting, compliance monitoring and reporting, and review and sealing of design drawings, construction specifications and contractor bid documents. Other responsibilities included research and development of multimedia environmental software that helps manage and track monitoring and compliance reporting efforts for air emissions, water discharge, waste, chemical inventory, risk assessment, and project management.  All project tasks are performed by an assigned project team, which is managed by a project manager.  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.

Principal/ District Manager

TIM POWERS, P.G.

Mr. Powers is theDistrict Manager with PPM’s Baton Rouge office. Mr. Powers has over 36 years of experience as a geologist.  Mr. Powers supervises a staff of engineers, geologists, toxicologists, and environmental professionals responsible for projects involving air/water/waste permitting, subsurface soil and groundwater investigations, groundwater monitoring events, corrective action plans, and remediation of sites impacted by petroleum hydrocarbon, chlorinated solvents, and heavy metals contamination.  Mr. Powers serves as a senior project manager and senior geologist over environmental site investigations, subsurface soil and groundwater remediation projects, risk evaluation projects, property transfer environmental assessments, and groundwater monitoring projects.  Additionally, Mr. Powers has extensive experience with industrial development of greenfield sites.; his experience includes regulary and public commeunications, air permitting, water permitting, Army Corps of Engineers permitting, Coastal Use permitting, Levee Distict permitting, Department of Transportation permitting, Department of Health and Hospital permitting, Parish and City permitting, Council meeting presentations, wetland delineations, cultural resource surveys, etc. Other responsibilities include training of technical personnel and participation in training manual preparation.  Projects managed by Mr. Powers are tracked using state of the art management software throughout the life of the project.  Project team members and the client are informed of the progress of the project through regular project status repots.  Mr. Powers is familiar with Environmental Protection Agency (EPA) protocol, Louisiana Department of Environmental Quality, Risk Evaluation/Corrective Action Program (RECAP), and Quality Assurance/Quality Control (QA/QC) procedures.

Principal/Senior Geologist

KEITH PYRON

Mr. Pyron has over 32 years of experience and is a Principal and founder of PPM Consultants, Inc.  Mr. Pyron also serves as Principal in Charge for the company’s government project program.  For the past 25 years, Mr. Pyron has managed and overseen large task order contracts and worked with numerous remedial action projects throughout the Southeast.  Projects involving Mr. Pyron’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.  Mr. Pyron’s extensive remediation experience includes the use of 15 different technologies.  Mr. Pyron 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.

District Manager

ISAAC SMITH

Mr. Smith has 20 years of experience in air quality and compliance and serves as a Environmental Compliance Manager with PPM.  He worked as a operations manager and senior pollution control specialist for a emissions testing company for 13 years and has been an environmental consultant for 7 years with specialized experience in air quality projects involving air permitting, compliance reporting, emissions measurement and calculations, and continuous emission measurement systems (CEMS). He has an 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, and compliance reporting and assistance. He has been responsible for personnel training and quality control/senior review for RMPs, air permit applications, and source testing.  He has been responsible for quality assurance/quality control (QA/QC) of deliverables, negotiation and interfacing with state and local environmental agencies, technical planning and supervision of fieldwork, project staffing, and budget control.