We take pride in our work, and our customers think it shows.
The people we serve have defined the core mission of Simpson Environmental and we are proud of the impact we make for those looking to restore health, safety and pride in the spaces they count on to enrich every aspect of their lives.
With more than 150 years of experience in environmental remediation and projects in five states across the Southeastern United States including Florida, Georgia, Alabama, Mississippi and South Carolina, the team at SES has successfully completed more than 10,000 environmental restoration and demolition projects since 2005. With a strict adherence to safety and ongoing training, the team members on every Simpson project are among the best in their respective fields of expertise and operate with a speed and efficiency required of any asbestos removal, mold remediation, duct cleaning or demolition project.

Tim Yaeger
President & Project Manager
Tim has nearly 25 years of experience in the environmental services industry, including the completion of over 1,500 asbestos and lead paint abatement, duct cleaning, interior and structural demolition and mold remediation projects.
- Certified Florida Mechanical Contractor
- Georgia Licensed Asbestos Contractor
- Florida Licensed Asbestos Contractor
- EPA Accredited Asbestos Building Inspector
- EPA Accredited Asbestos Abatement Supervisor
- Certified Renovator – EPA Lead Renovation, Repair and Painting
- Alabama Certified Asbestos Supervisor
- Member of National Air Duct Cleaners Associationd
EXPERIENCE
Work experience includes Simpson & Associates, Inc., Cross Environmental Services, Inc. and Simpson Environmental Services, LLC.
2005 – Present
Simpson Environmental Services, LLC – Project Manager of asbestos abatement, duct cleaning, lead paint abatement, microbial remediation, and interior demolition projects.
2001 – 2005
Cross Environmental Services, Inc. – Project Manager of asbestos abatement, lead paint abatement, microbial remediation, and interior demolition projects.
1995 – 2001
Simpson & Associates, Inc. – Performed asbestos abatement, lead paint abatement, microbial remediation, and interior demolition as Supervisor and Project Manager.

Shawn Brigham
Vice President & Project Manager
A Certified Indoor Environmentalist, Shawn has more than 22 years of experience in the asbestos and lead abatement industry as both a consultant and project manager.
- Certified Florida Mechanical Contractor
- Certified Indoor Environmentalist
- EPA Accredited Asbestos Inspector/Management Planner
- EPA Accredited Asbestos Abatement Supervisor
- NIOSH 582 Certified
- Radon Measurement Technician
- American IAQ Council
- Certified Renovator – EPA Lead Renovation, Repair and Painting
EXPERIENCE
Work experience includes Law Engineering/MACTEC Engineering and Consulting, Inc, GLE and Associates, Simpson Environmental Services, LLC.
2005 – Present
Simpson Environmental Services, LLC – Office, Client and Project Manager of asbestos abatement, duct cleaning, lead paint abatement, microbial remediation, and interior demolition projects.
1998 – 2005
Law Engineering and Environmental Services, Inc. /MACTEC Engineering and Consulting, Inc – Project Manager/Resource Manager, Industrial Hygienist of asbestos abatement, lead abatement, and indoor air quality projects.
1997 – 1998
GLE & Associates, Inc. – Project Manager and Inspector of asbestos abatement, lead abatement, and indoor air quality projects.
1989 – 1997
Law Engineering, Inc. – Industrial Hygienist

Casey Mattox
Vice President & Project Manager
With more than 25 years of experience under his belt, Casey has completed over 800 asbestos, mold remediation, demolition and duct cleaning projects.
- Florida Certified Mold Remediator
- EPA Accredited Abatement Supervisor
- NIOSH 582 Certified
- Florida Certified General Contractor
- Florida Certified Underground Utility Contractor
- South Carolina Licensed Asbestos Contractor
- Alabama Certified Asbestos Supervisor
EXPERIENCE
Work experience includes Harrison Contracting Inc., Cross Construction Company, Samurai Construction Company, and Simpson Environmental Services, LLC.
2005 – Present
Simpson Environmental Services, LLC – Vice-President / Project Manager of asbestos abatement, duct cleaning, lead paint abatement, microbial remediation, and interior and structural demolition projects.
1995 – 2005
Partner in a family business.
1990 – 1995
Samurai Construction Company – Performed asbestos abatement, lead paint abatement, and interior demolition as a Supervisor and Project Manager.
1988 – 1990
Cross Construction Company – Performed asbestos abatement, lead paint abatement, and interior demolition as a Supervisor and Project Manager.
1985 – 1988
Harrison Contracting, Inc. – Performed asbestos abatement and interior demolition as a Supervisor.

Randall LesPerance
Project Manager
Randall is a leading project manager with 25 years of asbestos abatement, mold remediation, demolition, and duct cleaning projects.
- Certified Florida Mechanical Contractor- Simpson Environmental Services. LLC (2005)
- Louisiana Licensed Mold Remediation Contractor- Simpson Environmental Services, LLC (2006)
- Louisiana Commercial Pesticide Applicator (Antimicrobial Pest Control)
- EPA Accredited Asbestos Building Inspector
- EPA Accredited Asbestos Abatement Supervisor
- Member of National Air Duct Cleaners Association
- Air Systems Cleaning Specialist – National Air Duct Cleaners Association
EXPERIENCE
Work experience includes Evans Environmental & Geosciences, Simpson & Associates, Inc., Cross Environmental Services, Inc. and Simpson Environmental Services, LLC.
2010 – Present
Simpson Environmental Services, Inc. – Project Manager of asbestos abatement, duct cleaning, lead paint abatement, microbial remediation, and interior demolition projects.
2001 – 2010
Cross Environmental Services, Inc. – Project Manager of asbestos abatement, duct cleaning, lead paint abatement, microbial remediation, and interior demolition projects.
1999 – 2001
Simpson & Associates, Inc. – Project Manager of asbestos abatement, lead paint abatement, microbial remediation, and interior demolition projects.
1995 – 1999
Evans Environmental & Geosciences – Performed asbestos abatement monitoring, lead paint abatement monitoring, microbial remediation monitoring, and building & environmental surveys.

Angel Magobet
Project Manager
With nearly 25 years of experience in environmental remediation, Angel has estimated, secured and managed many high profile multi-million dollar, tight time frame asbestos abatement, disaster restoration, duct cleaning, emergency response, interior demolition, lead abatement and microbial remediation projects throughout the Eastern seaboard.
- Environmental Training Asbestos Contractor/Supervisor (40-hour course)
- NAETI Hazardous Materials Supervisor (HAZMAT)
- Certified EPA Lead Abatement Supervisor
- 30-Hr Occupational Safety and Health Training
- American Red Cross Adult First Aid & CPR
EXPERIENCE
Work experience includes PDG Environmental, Inc., Flagship PDG, DECON Environmental & Engineering, Inc., and Simpson Environmental Services, LLC.
2015 – Present
Simpson Environmental Services, LLC. – Perform and managed asbestos abatement, disaster restoration, duct cleaning, emergency response, interior demolition, lead abatement and microbial remediation projects in southern U.S.
2010 – 2015
DECON Environmental & Engineering, Inc. – Performed and managed asbestos abatement, disaster restoration, emergency response, interior demolition, lead abatement and microbial remediation projects in southern U.S.
1996 – 2010
Flagship PDG – Performed and managed asbestos abatement, disaster restoration, emergency response, interior demolition, lead abatement and microbial remediation projects in northeastern U.S.

Wayne Rettinger
Corporate Secretary & Office Manager
Mr. Reittinger is responsible for the internal office related tasks associated our projects and has been employed in the Environmental contracting industry since 1994. He is located in our corporate office and all internal paperwork goes through him. Upon the successful awarding of a project, he will generate the proper invoice and insure Post-Job Submittal Books are sent in a timely manner.
- University of Northern Iowa-BA Accounting
EXPERIENCE
Work experience includes Nolte, Cornman & Johnson, CPA, Hacker, Nelson & Co., CPA, Newton Sheet Metal, Inc., Simpson & Associates, Inc., Cross Environmental Services, Inc., Pangallo & Simpson Construction, Inc. and Simpson Environmental Services, LLC.
2005 – Present
Simpson Environmental Services, LLC – Office manager and accountant.
2001 – 2004
Cross Environmental Services, Inc. – Accountant in charge of billing and accounts receivable.
1994 – 2001
Simpson & Associates, Inc. – Office manager and accountant.
1988 – 1994
Newton Sheet Metal, Inc. – Office manager and controller of commercial roofing and sheet metal contractor.
1984 – 1987
Nolte, Cornman & Johnson, CPA – Supervised audit team for commercial, non-profit and School Districts. Prepared corporate, partnership, non-profit and personal income tax returns.
1988 – 1988
Hacker, Nelson & Co., CPA – Supervised audits of Banks, Contractors and School Districts. Prepared corporate, partnership and personal income tax returns.

Tim Sparks
Project Manager
Tim has more than 30 years experience in full scale demolition, selective demolition, asbestos abatement, mold remediation and civil/site work throughout the southern United States.
- EPA Accredited asbestos supervisor
- OSHA 30 hour construction safety
- OSHA fleet safety management
- OSHA safety supervisor and leadership
- FEMA emergency support (ESF) #9
EXPERIENCE
Work experience includes the United States Navy, Johnson Logging, Phillips and Jordan, CES, Inc., and Simpson Environmental Services, Inc.
2011 – Present
Simpson Environmental Service, LLC – Estimator/Project Manager for full scale demolition, selective demolition, mold remediation and civil/site projects.
2003 – 2011
CES, Inc. – Estimator/Project Manager for full scale demolition projects and contaminated soil abatement projects.
1997 – 2002
Phillips and Jordan – Field superintendent for land clearing, transmission line reclamation and oil exploration projects.
1986 – 1996
Johnson Logging and Land Clearing – Operator and Crew Chief.
1982 – 1986
United States Navy

Frank Donovan
Project Manager
Frank has over 35 years of experience in the environmental services industry. He has been an integral part of thousands of successful projects in the lead and asbestos abatement, interior and structural demolition and mold remediation industries.
He has also taken on the role of Safety Director, with overall responsibility for safe work practices and OSHA compliance.
- OSHA 301 Certified
- Florida Licensed Abatement Contractor
- EPA Accredited Asbestos Abatement Supervisor
- EPA Accredited Lead Abatement Supervisor
- Alabama Certified Asbestos Abatement Supervisor
- S.C. Certified Asbestos Abatement Supervisor
EXPERIENCE
2020 – Present
SES, LLC- Project Manager and Safety Director. Overseeing all tasks relating to safety and OSHA compliance. Managing projects involving asbestos and lead remediation, interior demolition and mold remediation.
2014 – 2019
Bristol Environmental Group- General Manager. Responsible for all operations throughout Florida. Projects included lead and asbestos abatement, mold remediation, interior and structural demolition.
2008 – 2014
LVI Services- President of S.E. Operations. Oversight and P&L responsibility for all branches in the six southern states and Puerto Rico. Tasks performed included lead and asbestos abatement, mold remediation, interior and structural demolition.
2008 – 2014
Advanced Building Systems- Vice President. Project Manager for projects that included lead and asbestos abatement, mold remediation, interior and structural demolition.
1991 – 2001
PAR Contracting Group- V.P. Principle. Oversight and P&L responsibility for Projects throughout Manhattan and the tri-state area. Tasks performed included lead and asbestos abatement, mold remediation, interior and structural demolition.

Joe Mata
Project Manager
Experienced environmental services professional with over 29 years of expertise in asbestos abatement, demolition, mold remediation, lead, PCB, and mercury projects. Successfully managed and completed over 1,000 projects across commercial and industrial sectors. Adept at overseeing large-scale operations, ensuring compliance with safety regulations, and managing teams to deliver high-quality environmental solutions.
- Asbestos Contractor/Supervisor Initial Training (40-hour course)
- Asbestos Contractor/Supervisor Refresher Training (8-hour course)
- OSHA Construction Occupational Safety Training (10-hour course)
- OSHA General Industry Safety Training (10-hour course)
- Florida Asbestos Supervisor License
- Aerial Lift & Scaffolding Trainer Training
- EPA Lead (Pb) Supervisor
EXPERIENCE
2021 – Present
Simpson Environmental Services LLC – Project Manager of asbestos, demolition, Mold, lead, PCB and mercury projects with well over 1,000 projects completed in his career.
2016 – 2021
Prism Response (Alloy) – Project Manager of commercial and industrial large-scale asbestos, lead and mold projects.
2012 – 2016
Enviro-Staffing Solutions- General Manager of an abatement company that performed asbestos, lead, PCB and mold projects in the Massachusetts area.
2010 – 2013
Prism Response, Inc. – Operations Manager oversaw daily operations of labor, equipment, and material for asbestos and demolition projects throughout the Northeastern region of the United States.
2007 – 2010
PDG/ FlagshipPDG – Project Manager for of asbestos, demolition, Mold projects throughout the Northeast region of the United States.

Brandon Nicolai
Project Manager
Brandon has nearly 14 years of experience completing asbestos and lead paint sampling and abatement activities, indoor air quality assessments, mold remediation, water intrusion surveys, duct cleaning, and explosive dust cleaning.
EXPERIENCE
Work experience includes Simpson Environmental Services, LLC., DECON Environmental Services, Integrated Mission Support Services (Kennedy Space Center/ Cape Canaveral AFS), and GLE Associates, Inc
2021 – Present
Simpson Environmental Services, Inc. – Project Manager of asbestos abatement, lead paint abatement, microbial remediation, duct cleaning, and explosive dust cleaning.
2016 – 2021
DECON Environmental – Managed asbestos abatement, lead paint abatement, and microbial remediation projects.
2015 – 2016
Integrated Mission Support Services (IMSS) at Kennedy Space Center/ Cape Canaveral AFS – Environmental Health Specialist for confined space entry checks, toxic vapor checks, asbestos inspections, lead paint inspections, indoor air quality assessments, breathing air evaluations, employee noise exposure assessments and octave band analysis.
2011 – 2015
GLE Associates – Performed asbestos surveys, asbestos air monitoring, lead paint surveys, TCLP sampling, indoor air quality assessments in Florida and Mississippi, microbial remediation monitoring and sampling, and was an AAR Registered Analyst in the State of Florida from 2012-2015.

Clint Lanier
Project Manager
Clint is a leading project manager with 17 years of asbestos abatement, mold remediation and demolition projects.
- EPA Accredited Asbestos Supervisor
- EPA Accredited Lead Supervisor
EXPERIENCE
Work experience includes Cason Environmental & Demolition and Simpson Environmental Services, LLC.
2023 – Present
Simpson Environmental Services, LLC – Project Manager of asbestos abatement, lead paint abatement, microbial remediation and interior demolition projects.
2015 – 2023
Simpson Environmental Services, LLC – Project Manager of asbestos abatement, lead paint abatement, microbial remediation and interior demolition projects.
2008 – 2015
Enviro-Staffing Solutions- General Manager of an abatement company that performed asbestos, lead, PCB and mold projects in the Massachusetts area.

Kip Smith
Project Manager
Kip is a leading project manager with 35 years of asbestos asbestos abatement, asbestos air monitoring, asbestos inspections, mold remediation and demolition.
- OSHA 40 Hour Hazwoper
- EPA Accredited Asbestos Supervisor
- EPA Accredited Asbestos Inspector
- Alabama Certified Asbestos Supervisor
- Alabama Certified Asbestos Inspector
- NIOSH 582 Certification Sampling and Evaluating Airborne Asbestos Fibers
EXPERIENCE
Work experience includes Law Engineering and Environmental, Aztec Environmental, Cross Construction Services, Cason Environmental and Demolition Services LLC. and Simpson Environmental Services, Inc.
2023 – Present
Simpson Environmental Services, Inc.- Project Manager of asbestos abatement, microbial remediation and interior demolition.
2008 – 2023
Cason Environmental and Demolition Services LLC. Vice President and Project Manager of asbestos abatement, microbial remediation and demolition and interior demolition.
2006 – 2008
Cross Construction Services – Project Manager of asbestos abatement, microbial remediation and interior demolition.
2002 – 2006
Aztec Environmental – Project Manager of asbestos abatement, microbial remediation and demolition and interior demolition.
1982 – 2002
Law Engineering Testing Company-AMEC-MACTEC Inspector of concrete, soils, roof inspector, facilities inspector, asbestos inspector, mold inspector and leadinspector.