Call Us Today
(847) 344-0607
Answers to your indoor air quality and environmental problems
Clean Air Sciences Logo

Donald B. Paxton

Clean Air Sciences, Inc.


Pennsylvania State University, University Park, Pennsylvania. Bachelor of Science degree in Environmental Resource Management.

Graduated 5/1994


Clean Air Sciences, Inc. (6/2008 to present)
Chiodo Companies L.L.C. – D.B.A Clean Air Inspections (1/2006 to 6/2008)
Environmental Diagnostics, Inc. (1/2003 to 1/2006 – (company name changes)


– Provided consulting and investigative services for commercial, industrial, and residential clients, as well as for insurance companies and law firms as a Certified Indoor Environmental Consultant (CIEC) and Certified Environmental Thermography Consultant (CETC).
– Performed over 750 indoor air quality (IAQ) investigations to measure microbial (mold and bacteria), chemical, and standard IAQ parameter levels.
– Mold investigations included; performing visual inspections, infrared (IR) thermal imaging moisture surveys, air and surface sampling, onsite damage assessments and removal specifications for water- and mold-damaged materials, generating reports with visual observations, data interpretations, recommendations, occupancy determinations, material removal schedules and protocols, coordinating project with remediation contractors, consulting clients with management of remediation, and conducting final post-remediation clearance and re-occupancy evaluations.
– Provided litigation support as an expert witness and legal council consultant; conducted fungal, water impact, and chemical field investigations to document forensic evidence for case development. Rendered expert opinions regarding occupancy, individual human exposure, and water impact of commercial and residential property.
– Consulting services also included reporting for; Toxic Release Inventory (TRI) Form R, Tier II Chemical Inventory, annual and rolling FESOP and VOM/HAP emissions inventory, and conducting Phase I ESAs.
– Managed projects, generated proposals, and produced final reports.
– Assisted certified industrial hygienist (CIH) with complex or large scale projects.

Weston Solutions, Inc. (formerly Roy F. Weston, Inc.) 9/1997 to 1/2003


– U. S. EPA Region V Superfund Technical Assessment Response Team (START2) contract.
– Provided Region III EPA with crossover assistance for Washington D.C. Hart Senate Office/Capitol Complex Anthrax Response; collected samples in Level “C” personal protective equipment (PPE) as part of initial investigation, provided oversight of U.S. Marine sample team, oversight of HEPA gross decontamination of D.C. Bomb Squad offices, assisted EPA Criminal Investigation Division (CID) and Federal Bureau of Investigation (FBI) in Springfield, VA. with anthrax screening and the collection of evidence from Senator Tom Daschle’s mail, and created decontamination protocol.
– Assisted EPA On-Scene Coordinators (OSCs) during Chicago area canal pilot project site with canal inspections, oil sheen dynamics and product source identification, providing absorbent boom maintenance oversight of responsible party contractors, oversight of EPA contractor during pipeline closures, acting as Site Health and Safety Coordinator, and aided in planning of phytoremediation study.
– Provided responsible party oversight during multimedia site assessment which included a cone penetrometer testing (CPT) rapid oscillating technology (ROST) unit with laser induced fluorescence (LIF) to determine hydrocarbon presence, observation well installation, geoprobe sampling, groundwater sampling, and electromagnetic surveys for site closure and settlement negotiations.
– Performed review/audit of Facility Response Plans (FRP) and Spill Prevention Control and Countermeasure (SPCC) plans submitted to U.S. EPA Region V and determined facility compliance/completion of plans.


– Federal Programs Division, Site Assessment and Technical Assistance (SATA) contract for U.S. EPA Region III
– Assisted EPA OSC with CERCLA removal action project oversight, cost tracking, technical documentation, site health and safety, contractor oversight, particulate monitoring, high-volume air sampling, and implementing X-ray fluorescence (XRF) unit to determine post-excavation concentrations resulting in cost savings by eliminating lab turnaround times.
– Performed site investigations, site entry, monitoring of hazardous atmospheres, multimedia (soil, water, air, biological) environmental sampling, and making health and safety recommendations for site activities.
– On-call for Emergency Response to environmental hazards, oil spills and transportation accidents, performing level “B” PPE site entry and reconnaissance, and assisting OSC with over-site of response activities.
– Prepared pollution reports, sampling plans, trip reports, ATSDR reports, background for E. P. A. action memos, AutoCAD sitemaps, data summaries, health and safety plans, PRP searches, cost projections for removal projects, and OSC After Action Report.


– Geosciences Department, environmental sample collection and advanced site assessment project (Phase I).
– Collected soil samples at liquid removal points and mercury meter stations along natural gas pipeline.
– Investigated spills and assessed area impacted with instrument readings and microscope verification.
– Operated global positioning system (GPS) equipment to locate site for database, and mapped site.
– Air monitored for explosive conditions, mercury vapors, and organic vapors.

Virtual Workplace, Inc. A Crouse Enterprises Company 3/1996 – 6/1997


– Conducted OSHA 40-Hour Health and Safety, Confined Space Entry, and 8 Hour Refresher Courses.
– Fit-tested and trained employees in the proper use, limitations and care of respiratory equipment.
– Assisted remediation and consulting groups of company with health and safety issues.


– Field density sand cone and analysis and sand calibration for sand cones
– Soil moisture content determination, gradation analysis – aggregate and particle sizing
– Radiological survey of laboratory work area testing for alpha, beta and gamma radiation
– Unconfined compression tests of soil cylinders, modified proctor of stockpiles
– Atterberg limits determination – liquid and plastic limit determination
– One point moisture-density relations of soil-cement mixture and compressive strength of cylinders
– Opposed Crystal System (OCS) testing on radioactive soil samples

Pennsylvania Department of Environmental Protection, Storage Tank Division, Central Office 5/1993 – 8/1993


– Reviewed facility Spill Prevention Response (SPR) Plans for completeness.
– Determined stream code information for SPR Plans from topographic maps.
– Contacted facility owners who failed to submit complete plans.
– Organized, conducted, and summarized underground storage tank survey of facilities.


– Certified Environmental Thermography Consultant – American Council for Accredited Certification (ACAC) 4/2011
– Certified Indoor Environmental Consultant – ACAC (formerly AmIAQC) 3/2007
– Certified Indoor Environmentalist – IAQA 5/2003

– 8-Hour cause, mitigation, and prevention of mold training course – EMSL Analytical, Inc. 3/2003
– 38-Hour Army Corps of Engineers Wetland Delineation & Management Training Program 3/2000
– IATA /DOT Training for shipment of known and unknown hazardous materials 3/2000
– 40-Hour OSHA Health and Safety Training 29 CFR 1910.120(e)(3)(i) 11/1995
– EPA Hazardous Materials Incident Response Operations (165.5) 11/1995
– Radiation Safety Training 10/1996
– 16-Hour Permit-Required Confined Space Entry/Rescue Training 29 CFR 1910.146(g)(1);(k)(1) 5/1997
– 8-Hour OSHA Supervisor Training 29 CFR 1910.120(e)(4) 10/1997
– American Red Cross Standard First Aid and Adult CPR 12/2000
– 8-Hour OSHA Health and Safety Refresher 29 CFR 1910.120(e)(8) 5/2002
– Bloodborne Pathogen Training 5/2002
– Hazard Communication Training 5/2002

Professional Affiliations

– American Council for Accredited Certification (ACAC) (2007 to present)
– American Indoor Air Quality Council (AmIAQC) (2007)
– Indoor Air Quality Association (IAQA) (2003 to 2007)
– American Industrial Hygiene Association (AIHA) (2006, 2010)
– Pennsylvania Association of Environmental Professionals (PAEP) (1995 to 2001)

Clean Air Sciences, Inc. is fully insured and carries general, professional, and microbial consulting liability insurance. Compare the competition, few carry any insurance and even fewer have more than general liability.
American Council for Accredited Certification (ACAC)
Council-Certified Indoor Environmental Consultant (CIEC)
Certified Environmental Thermography Consultant (CETC)

Find out why it is so important for mold and indoor air quality issues that you should ONLY hire a field scientist/investigator who is certified through the American Council for Accredited Certification (ACAC). Click on this link to view a brief video about ACAC certifications.

Service Area in Illinois

Arlington Heights
Buffalo Grove
Campton Hills
Cook County
​Crystal Lake
​Chicago​ (see panel below)

​Deer Park
​Downers Grove
DuPage County
​Elk Grove Village​
​Highland Park

​Kane County
​Lake Bluff
​Lake County
​Lake Forest
​Lake Zurich
​Long Grove​
McHenry County
​Oak Park

Orland Park
​Saint Charles
​Vernon Hills

Service Area in Chicago

​Gold Coast
​Grant Park
Lincoln Park
​Navy Pier
Near North Side
​Near South Side
​Mag Mile
​Old Town
​River North

…and many more in between.

Service Area in Wisconsin

Lake Geneva

…and many other towns along the IL border.

Service Area in Indiana

NW and dunes area

​…and other NW towns.