USENVI provides PFAS drinking water sampling and testing for PFOA, PFOS, PFHxS, PFCAs, PFSAs and 4:2, 6:2 & 8:2 FTSA. EPA Methods 533, 537.1 and 1633. PFAS Drinking Water Testing & Analysis | PFOA, PFOS, PFHxS, PFCAs, PFSAs & Fluorotelomer Sulfonates Professional PFAS Water Sampling, Laboratory Analysis & Environmental Testing | US Environmental Testing LLC (USENVI) What Are PFAS and Why Should Drinking Water Be Tested? Per- and polyfluoroalkyl substances (PFAS) are a large family of synthetic chemicals used in manufacturing, industrial processes, firefighting foams, water-resistant coatings, food packaging, textiles, and numerous consumer products. PFAS are often called forever chemicals because many are extremely persistent in the environment and can remain in groundwater, surface water, soil, and drinking water for extended periods. PFAS contamination is an important drinking water concern for municipal water systems, private wells, commercial properties, industrial facilities, schools, healthcare facilities, property owners, and real estate transactions. US Environmental Testing LLC (USENVI) provides professional environmental sampling coordination and PFAS drinking water testing services to help identify and evaluate potential contamination. Our testing programs can include perfluorocarboxylic acids (PFCAs), perfluorosulfonic acids (PFSAs), and se lected fluorotelomer sulfonates (FTSAs), depending on the analytical method and requested laboratory analyte list. Understanding the Three Major PFAS Chemical Groups 1. PFCAs – Perfluorocarboxylic Acids PFCAs are a major group of PFAS characterized by a perfluorinated carbon chain attached to a carboxylic acid functional group. They have been used in industrial manufacturing, fluoropolymer production, surface treatments, and other chemical applications. Common PFCAs include: PFOA (Perfluorooctanoic Acid): A historically widespread PFAS associated with fluoropolymer manufacturing and industrial applications. PFBA (Perfluorobutanoic Acid) PFPeA (Perfluoropentanoic Acid) PFHxA (Perfluorohexanoic Acid) PFHpA (Perfluoroheptanoic Acid) PFNA (Perfluorononanoic Acid) PFDA (Perfluorodecanoic Acid) PFUnDA and PFDoDA PFOA is one of the most extensively studied PFAS compounds and is a significant contaminant of concern in drinking water investigations. 2. PFSAs – Perfluorosulfonic Acids PFSAs are PFAS compounds containing a perfluorinated carbon chain attached to a sulfonic acid functional group. These chemicals have been used in stain-resistant treatments, surface coatings, firefighting formulations, and industrial applications. Common PFSAs include: PFOS (Perfluorooctanesulfonic Acid): A historically important PFAS used in numerous industrial and commercial applications. PFHxS (Perfluorohexanesulfonic Acid): A persistent PFAS associated with historical firefighting foam and industrial applications. PFBS (Perfluorobutanesulfonic Acid) PFPeS (Perfluoropentanesulfonic Acid) PFHpS (Perfluoroheptanesulfonic Acid) PFOS and PFHxS are important target analytes when evaluating drinking water contamination and potential historical industrial or firefighting foam impacts. 3. FTSAs – Fluorotelomer Sulfonates Fluorotelomer sulfonates are a related group of polyfluorinated substances that can be associated with industrial applications, firefighting foams, surface treatments, and certain fluorinated products. Unlike fully perfluorinated PFCAs and PFSAs, fluorotelomer sulfonates contain a partially fluorinated carbon chain. They are important because some can undergo environmental transformation into other persistent PFAS compounds. Common target analytes include: 4:2 FTSA (4:2 Fluorotelomer Sulfonate) 6:2 FTSA (6:2 Fluorotelomer Sulfonate) 8:2 FTSA (8:2 Fluorotelomer Sulfonate) The numerical designation identifies the fluorinated and non-fluorinated carbon portions of the fluorotelomer structure. These compounds can provide additional information during investigations involving AFFF firefighting foam, industrial wastewater, groundwater, and other potential PFAS sources. Important: Not every PFAS laboratory method measures every chemical group. The requested analyte list must be verified before sampling and laboratory submission. Which EPA Method Is Used for PFAS Drinking Water Testing? PFAS analysis typically uses liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). The appropriate EPA method depends on the sample matrix, target compounds, and whether the testing is intended for regulatory compliance or environmental investigation. EPA Method Primary Application Analytical Coverage EPA Method 533 Drinking water25 selected PFAS, including short-chain PFAS and selected fluorotelomer sulfonates EPA Method 537.1, Version 2.0Drinking water18 selected PFAS, including PFOA, PFOS, and PFHxS EPA Method 1633 Broader environmental matrices40 selected PFAS in groundwater, surface water, wastewater, soil, sediment, biosolids, landfill leachate, and fish tissue EPA Method 533 – Expanded Drinking Water PFAS Analysis EPA Method 533 uses isotope-dilution solid-phase extraction (SPE) and LC-MS/MS to identify and quantify selected PFAS in drinking water. This method is particularly important when evaluating a broader group of PFAS, including short-chain compounds and fluorotelomer sulfonates. Method 533 includes 4:2 FTSA, 6:2 FTSA, and 8:2 FTSA, making it an important method when these compounds are specifically requested. EPA Method 537.1 – Drinking Water PFAS Analysis EPA Method 537.1 Version 2.0 uses solid-phase extraction and LC-MS/MS to analyze 18 selected PFAS in drinking water. It includes important compounds such as PFOA, PFOS, and PFHxS. It is an EPA-approved drinking water method and is used in regulatory monitoring programs. Method 537.1 does not provide the same expanded FTSA coverage as Method 533. EPA Method 1633 – Broader Environmental PFAS Testing EPA Method 1633 is designed for PFAS analysis in a broader range of environmental matrices, including groundwater, surface water, wastewater, soil, sediment, biosolids, landfill leachate, and fish tissue. It analyzes 40 selected PFAS using LC-MS/MS. Method 1633 should not be confused with the approved drinking water compliance methods. For regulated public drinking water monitoring, Methods 533 and 537.1 are the applicable EPA-approved methods. Additional analytes must be confirmed against the method-specific target list. PFAS Reporting Limits: What Does Parts Per Trillion Mean? PFAS concentrations in drinking water are commonly reported in parts per trillion (ppt), equivalent to nanograms per liter (ng/L). A single part per trillion represents approximately one drop of water in 20 Olympic-sized swimming pools. This illustrates why specialized laboratory equipment and contamination-controlled sampling procedures are essential. Typical drinking water PFAS reporting sensitivity may be in the low single-digit ppt range, depending on the compound, analytical method, laboratory validation, and sample matrix. Measurement Equivalent Concentration 1 ppt1 ng/L 2 ppt2 ng/L 4 ppt4 ng/L 5 ppt5 ng/L 10 ppt10 ng/L 1 ppb1,000 ppt Minimum Reporting Levels (MRLs), Method Detection Limits (MDLs), and laboratory Reporting Limits (RLs) are not interchangeable. The actual reporting limit must be obtained from the performing laboratory for each analyte and analytical batch. For example, EPA's UCMR 5 monitoring program established minimum reporting levels of 3 ppt for 4:2 FTSA and 5 ppt for both 6:2 FTSA and 8:2 FTSA under Method 533. These are program-specific levels, not a guarantee of every laboratory's reporting limits. USENVI recommends reviewing the laboratory's analyte-specific reporting limits before collecting samples, particularly when evaluating results against drinking water standards or health-based advisory levels . PFAS Drinking Water Sampling Requirements & Quality Control PFAS sampling requires specialized collection procedures because PFAS-containing materials are common in everyday products and sampling equipment. Improper handling can introduce contamination and compromise analytical results. Professional PFAS sampling should follow the laboratory's approved collection instructions and applicable EPA guidance. Essential PFAS Sampling Rules 1. Use PFAS-Free Sample Bottles Use laboratory-supplied, approved polypropylene or polyethylene sample containers with compatible caps. Bottles must be appropriate for the analytical method and laboratory requirements. Do not substitute ordinary water bottles or containers. 2. Avoid Teflon and Fluoropolymer Materials Teflon, PTFE, and other fluoropolymer-containing materials must be avoided during sample collection wherever possible. This includes tubing, sample-contact equipment, certain seals, tape, and other potentially contaminating materials. 3. Collect Field Blanks A field reagent blank (FRB) is used to evaluate potential contamination introduced during transportation, handling, and field collection. The laboratory provides PFAS-free reagent water and the appropriate blank container and instructions. Additional equipment blanks or field duplicates may be required depending on the sampling plan. 4. Maintain Chain of Custody Every sample must have appropriate identification and documentation, including: Unique sample identification number Collection date and time Sampling location and source Requested EPA analytical method Requested PFAS analyte list Sampler identification Sample preservation and temperature requirements Laboratory chain-of-custody documentation Sample receipt and transfer records Chain-of-custody documentation establishes sample traceability from collection through laboratory receipt and analysis. 5. Prevent Cross-Contamination Avoid personal care products, cosmetics, sunscreen, insect repellents, water-resistant clothing, stain-resistant materials, and other potential PFAS sources during collection. Do not touch the inside of sample bottles or caps. Follow laboratory requirements for gloves, coolers, ice, and sample storage. 6. Follow Laboratory Preservation and Shipping Requirements Samples must be collected in the correct containers, preserved as required by the method, and shipped under the laboratory's specified temperature and holding-time conditions. Do not rinse or overfill prepared sample containers. How Are Public Water Systems Sampled for PFAS? Public water system sampling must be conducted according to the applicable regulatory monitoring plan, approved analytical method, and state drinking water requirements. For regulated public water systems, sampling locations commonly include entry points to the distribution system (EPTDS), where treated water enters the distribution network. A typical sampling program involves: Reviewing the water system's identification, treatment configuration, and regulatory monitoring requirements. Identifying the required entry points and sampling locations. Reviewing the laboratory sampling kit, analyte list, and collection instructions. Collecting the required drinking water samples and associated field reagent blanks. Completing sample identification, field documentation, and chain-of-custody records. Transporting samples to the qualified laboratory under required conditions. Reviewing analytical reports and comparing results with applicable regulatory requirements. For a public water system with multiple entry points, sampling requirements may apply separately to each designated location. The number and frequency of samples depend on the regulatory monitoring schedule and system-specific requirements. Private well, residential tap, commercial building, and industrial facility sampling follow different project-specific sampling plans. A residential drinking water sample should not automatically be treated as a public water system compliance sample. Who Should Consider PFAS Drinking Water Testing? PFAS testing may be appropriate for: Municipal and community public water systems Private residential wells Commercial and industrial facilities Schools, colleges, and daycare facilities Hospitals and healthcare facilities Real estate transactions and property due diligence Properties near manufacturing facilities Properties near airports and military installations Locations with historical AFFF firefighting foam use Groundwater investigations and environmental assessments Wastewater treatment and industrial discharge investigations Testing can help determine whether selected PFAS compounds are present in drinking water and provide analytical information for further investigation. Schedule Professional PFAS Drinking Water Sampling with USENVI US Environmental Testing LLC (USENVI) provides environmental testing services designed to help property owners, businesses, water systems, real estate professionals, and industrial clients evaluate potential environmental contaminants. Our PFAS testing services can be coordinated around EPA analytical methods, laboratory-specific analyte lists, reporting limits, sampling requirements, and project-specific quality assurance procedures. Whether you need PFOA testing, PFOS testing, PFHxS testing, expanded PFAS analysis, or testing for 4:2, 6:2, and 8:2 fluorotelomer sulfonates, selecting the correct analytical method and following proper sampling procedures are essential to obtaining meaningful results. Request PFAS Drinking Water Testing US Environmental Testing LLC (USENVI) Website: https://www.usenvi.com Phone: 331-462-7211 Email: info@usenvi.com USENVI – Professional Environmental Testing, Sampling & Laboratory Analysis Coordination. References: EPA – Drinking Water Research Methods — EPA descriptions of Methods 533, 537.1 and 1633. EPA – PFAS Drinking Water Laboratory Methods — Approved drinking water analytical methods. EPA – PFAS Drinking Water Sampling Requirements (June 2025) — Sampling kits, field reagent blanks and contamination prevention. EPA – UCMR 5 Monitoring Requirements — Specific FTSA monitoring and reporting levels. EPA – Comparing PFAS Drinking Water Analytical Methods — Comparison of drinking water analyte coverage. EPA Method 533 What EPA Method for PFAS? EPA 537.1, v2.0 EPA Method1633 EPA 533:4:2 - 6:2 - 8:2 EPA Method 1633 PFAS Reporting Limits Reporting Limits - PPT Anchor 1

Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 331-462-2711 Asbestos Lead mold radon water Testing Regulations & Regulatory Agencies Below is a library of references for environmental testing protocols; including Federal, Local, Municipal, and State. ANSI/ AARST American National Standard Institute/MAH STANDARDS 2023 ANSI/AARST SGM-SF - (Soil Gas Mitigation in Existing Homes) ANSI/AARST SGM-MFLB) - Soil Gas Mitigation in Existing Multifamily, School, Commercial, and Mixed-Use Buildings) Previously RMS-MF & RMS-LB ANSI/AARST CCAH - (Reducing Radon in New Construction of One & Two Family Dwellings and Townhouses) ANSI/AARST CC-1000 - (Soil Gas Control Systems in New Construction of Multifamily, School, Commercial, and Mixed-Use Buildings) ANSI/AARST MA-MFLB-2023 - ANSI/AARST MA-MFLB-2023: Protocol For Conducting Measurements Of Radon And Radon Decay Products In Multifamily, School, Commercial And Multi-Use Buildings details protocols when measuring radon concentrations in residential and non-residential occupancies. ANSI/AARST RRNC - (Rough-in of Radon Control Components in New Construction of 1&2 Family Dwellings and Townhouses) Designation of "MAH" as used in catalogue identification stands for Measurement of Air in Homes. AHERA Asbestos Hazard Emergency Response Act. A federal law enacted in 1986 to protect students and school staff from exposure to asbestos-containing materials in schools. It applies to public and non-public elementary and secondary schools, including charter schools and those associated with religious institutions. AHERA establishes a framework for inspecting, managing, and responding to asbestos hazards in school buildings. (source: https://www.epa.gov/asbestos/asbestos-and-school-buildings) HUD U.S. Department of Housing and Urban Development IEA Indoor Environments Association (IEA) IEMA Environmental Protocols Illinois Emergency Management Agency, Department of Homeland Security NESHAP National Emission Standards for Hazardous Air Pollutants NIOSH National Institute for Occupational Safety and Health OSHA United States Occupational Safety and Health Administration OSHA United States Occupational Safety and Health Administration, Exposure Standards: Standard 1910.1001. Source: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1001 USEPA United States, Environmental Protection Agency AHERA Blog 331-462-2711 Request Quote

Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 331-462-2711 Asbestos Lead mold radon water National standards, compliant care, precise results for air, asbestos, lead-paint, soil, and water —US Environmental. Blog Ph: 724-467-7328 Request Quote

Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 630-915-9434. Mold Risk Assessment Environmental Compliance, Consulting, and Risk Assessment Mold is a type of fungus that grows in damp environments. It can cause a variety of health issues, including respiratory problems, allergies, and infections. Not all fungal spores are harmful to our health. The absence or presence of fungal spores may only be verified by sampling and analysis by a licensed technician and laboratory. Fungal spore verification may only be confirmed with the assistance of a microscope. Identification and classification of fungal spores may not be performed by sight. If you suspect that you have mold in your home or business, it's important to get it tested as soon as possible. At US Environmental Testing , we offer all-inclusive fungal spore sampling services to identify source and concentration of fungal spored in the sample site. With the result data set, a plan of action may be derived and used for: 1. General Inspection: property discovery purposes 2. Insurance Investigations: Storm water or water pipe rupture, causing water infiltration. 3. Real Estate transaction inspection. 4. Remediation planning and Post-remediation Valuation (PRV). 4. Litigation investigation / documentation 5. OSHA Investigations: OSHA 300 (3) (6) injuries/illness claim investigation. Upon conclusion of site assessment, US Environmental Testing will create a remedial plan of action to address any potential safety concerns on your site. Aiming to ensure that your space is safe and healthy. Mold in Real Estate 1. The USEPA has reported that home air can have 100 times more chemicals inside than outside. 2. The USEPA has also reported that adults and kids now spend most of their time indoors (90%). 3. The CDC has reported that 20+ million adults have asthma, and the National Asthma Survey has reported that asthma is the most prevalent chronic disease among children. These numbers continue to increase annually, suggesting that the indoor environment plays a contributing role in this trend. 4. Mold growth can be present within the home and be hidden behind walls or underneath carpeting or flooring. 5. The use of Formaldehyde is prevalent in certain building materials and the concentration of this known cancer-causing agent can be many times the safe level. WHAT TO DO ABOUT MOLD? 四种模具检查 一 一般检查：家庭/办公室 整治 2个 保险 公司和索赔（水损害和霉菌） 3个 房地产交易 4个 LITIGATION & 有健康问题/对霉菌敏感的客户 How are fungal spores identified? 1. Metered air samples are captured from the sample site. 2. Direct samples may be collected to analyze against air samples. 3. Infrared Thermography technology is used to isolate potential moisture rich substrates in the dwelling which are then further analyzed by moisture meters and investigated further by the inspector. 关于模具的重要信息 1. 关于模具你应该知道的十件事 2. 关于模具的十件事 3. 臭氧发生器能有效控制室内空气污染吗？ 4. EPA 对室外空气中影响光化学氧化的 VOC 的法规定义 5. 学校的霉菌和室内空气质量 Blog 331-462-2711 Request Quote

Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 331-462-2711. Air Asbestos Lead Mold Radon Water Radon Is a Serious Risk in Maywood, Illinois Illinois is a high radon zone, and homes in Maywood are at risk, due to soil conditions and construction methods. Why Illinois Has Some of the Highest Radon Levels in the U.S. Illinois is classified as a Zone 1 Radon State, meaning a high probability of indoor radon levels exceeding 4.0 pCi/L. What Is Radon? (Scientific Overview) Radon is a radioactive noble gas formed from the decay of uranium in soil. It infiltrates structures through: Foundation cracks Sump pits Utility penetrations Crawlspaces and slab joints Once inside, radon accumulates—especially in basements and lower levels. Radon may be detected in elevated levels in up to the third level of a dwelling. Licensed Radon Testing & Mitigation Services in Maywood, IL Trusted Radon Testing in Maywood, Illinois If you're searching for licensed, insured environmental testing in Maywood, Illinois, with experience conducting tests that you need! Look no further: US Environmental Testing is recognized as a leading authority in radon testing, radon detection, and radon mitigation across Illinois, serving residential, commercial, government, healthcare, and educational facilities. Why Choose Us in Maywood, Illinois “We are Illinois’ leading environmental testing authority (2026) operating under EPA, ANSI, HUD, and OSHA-aligned protocols.” Trusted across Illinois. We operate under strict adherence to protocols outlined by the following Federal Agencies: American National Standard Institute (ANSI) HUD Environmental Protocols Illinois Emergency Management Agency, Department of Homeland Security (IEMA) Indoor Environments Association (IEA) National Emission Standards for Hazardous Air Pollutants (NESHAP) OSHA & NIOSH Safety Frameworks United States, Environmental Protection Agency (USEPA) National Institute for Occupational Safety and Health (NIOSH) United States Occupational Safety and Health Administration (OSHA) Our Services in Maywood, Illinois Asbestos Containing Materials (ACM) - Building Inspections Residential Asbestos Containing Materials (ACM) - Building Inspections Real Estate Asbestos Containing Materials (ACM) - Building Inspections Commercial Asbestos Containing Materials (ACM) - Building Inspections Lead-Based-Paint Risk Assessment & Lead-Based-Paint Sampling Residential Fungal Spore 'Mold' Risk Assessments Real Estate Fungal Spore 'Mold' Inspections Commercial Fungal Spore 'Mold' Risk Assessments Commercial Fungal Spore 'Mold' Inspections Residential Radon Testing Real Estate Radon Testing Commercial Radon Testing Industrial Radon Testing Daycare Radon Testing, Residential & Commercial Radon Mitigation System Design Post-Mitigation Radon Testing Serving Maywood, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Maywood, Illinois and surrounding suburbs and EPA Regions Most homes in Maywood have never been tested for radon - Schedule your certified inspection today." What Makes Us Different Compliance-First Approach We don't just test - we ensure full regulatory alignment. Scientific Precision Advanced monitoring equipment and calibrated data analysis. Multi-Sector Expertise Residential Capital Improvement (CI) Commercial Education Government Healthcare Industrial Illinois Radon Laws & Compliance (2026) Real Estate Transactions: Radon disclosure is required Testing is strongly recommended during inspection Schools: Illinois law recommends testing every 5 years Results often reported to state authorities Daycares: Required at time of initial DCFS license issuance and every 3 years for compliance (DCFS) Asbestos Asbestos inspection Maywood, IL Asbestos survey commercial Maywood, IL Asbestos testing near me Maywood, IL Mold Mold inspection Maywood, IL Black mold testing Maywood, IL Basement mold inspection Maywood, IL Lead Lead paint testing Maywood, IL Lead risk assessment Maywood, IL Lead inspection daycare Maywood, IL Schedule Radon Testing in Maywood, Illinois 📞 630-915-9434 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog Ph: 724-467-7328 Request Quote

Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 331-462-2711. Air Asbestos Lead Mold Radon Water COMMERCIAL PROPERTY TESTING - ILLINOIS Which Company does commercial property environmental testing in Illinois? If you own, manage, or are acquiring a commercial property in Illinois and need certified environmental testing, US Environmental Testing LLC — operating alongside Northern Illinois Radon — is the licensed, independent firm built exactly for this. We've served Chicagoland's commercial real estate market since 2015, providing unbiased testing results with no remediation conflict of interest. Why "independent" matters: We are a testing-only firm. We don't sell remediation, abatement, or mitigation. That means our findings are 100% objective — a critical distinction when your results will be used in due diligence, contract negotiations, or legal proceedings Our commercial environmental testing services in Illinois cover every hazard class commercial property owners and managers need to address: Commercial Air Quality Asbestos Building Inspection Lead-Paint Risk Assessment Mold Risk Assessment & Sampling Commercial Radon Detection Water Quality Analysis & Compliance We service office buildings, warehouses, retail spaces, schools, daycare centers, multi-family dwellings, industrial facilities, and mixed-use commercial properties throughout all of Chicagoland. If any hazard exceeds EPA or IDPH action thresholds, we provide clear, certified documentation and connect you with vetted remediation contractors. US Environmental Testing offers [commercial, industrial, and residential] air quality services, Licensed asbestos building inspections, and asbestos sampling, EPA Licensed lead-based paint risk-assessments and building inspections, licensed mold risk assessments and mold testing, licensed radon detection and radon mitigation services, and and certified water analysis, and all from one independent, certified firm. Call 630-915-9434 Email EPA Certified ● IDPH ● IEMA ● EPA REGIONS 4,5,9,+ What Makes Us Different Compliance-First Approach We don't just test - we ensure full regulatory alignment. Scientific Precision Advanced monitoring equipment and calibrated data analysis. Multi-Sector Expertise Residential Capital Improvement (CI) Commercial Education Government Healthcare Industrial Why Choose Us? “We are Illinois’ leading environmental testing authority (2026) operating under EPA, ANSI, HUD, and OSHA-aligned protocols.” Trusted across Illinois. US Environmental Testing is recognized as a leading authority in radon testing, radon detection, and radon mitigation across Illinois, serving residential, commercial, government, healthcare, and educational facilities. We operate under strict adherence to protocols outlined by the following Federal Agencies: American National Standard Institute (ANSI) HUD Environmental Protocols Illinois Emergency Management Agency, Department of Homeland Security (IEMA) Indoor Environments Association (IEA) National Emission Standards for Hazardous Air Pollutants (NESHAP) OSHA & NIOSH Safety Frameworks United States, Environmental Protection Agency (USEPA) National Institute for Occupational Safety and Health (NIOSH) United States Occupational Safety and Health Administration (OSHA) Our Services include: Asbestos Containing Materials (ACM) - Building Inspections Residential Asbestos Containing Materials (ACM) - Building Inspections Real Estate Asbestos Containing Materials (ACM) - Building Inspections Commercial Asbestos Containing Materials (ACM) - Building Inspections Lead-Based-Paint Risk Assessment & Lead-Based-Paint Sampling Residential Fungal Spore 'Mold' Risk Assessments Real Estate Fungal Spore 'Mold' Inspections Commercial Fungal Spore 'Mold' Risk Assessments Commercial Fungal Spore 'Mold' Inspections Residential Radon Testing Real Estate Radon Testing Commercial Radon Testing Industrial Radon Testing Daycare Radon Testing, Residential & Commercial Radon Mitigation System Design Post-Mitigation Radon Testing Serving Naperville, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Chicago, West suburbs, and EPA Regions 4,5, and 9 Schedule a Commercial Environmental Test Today 📞 630-915-9434 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Indoor Air VOCs Volatile Organic Compounds (VOCs) are inescapable in the indoor air we breathe. VOCs are most noticeable when there is an odor present and/or dangerous health side effect. Learn More Formaldehyde Formaldehyde is a colorless, strong-smelling gas, used in the construction of building materials and common household products. Formaldehyde may be commonly found in: Adhesives Glues Fiberboard Insulation Paper Product Coatings Particleboard Plywood Permanent-press fabrics Press-wood products Learn More Odor Smells have a wide range of effects on people. From the pleasant scents of perfumes to unpleasant odors which may be unpleasant and cause physical illness to some. Odors affect all people in different ways, pending individual health conditions, olfactory sensitivity, and any possible allergy susceptibilities. Learn More Sample Reports IAQ Commercial Survey Basic IAQ Commercial Survey Inspect IAQ Commercial Survey Predict IAQ Commercial Survey Reveal IAQ Commercial Survey Formaldehyde Tobacco Smoke Check Learn More Blog 331-462-2711 Request Quote

Asbestos Containing Materials most commonly found in insulation, Pipes, roofs, wall and floor tile, vinyl flooring, adhesives Asbestos Lead mold radon water Asbestos Containing Materials (ACM) & ACM Building Inspections Asbestos Building Inspection Services Many homes and commercial buildings constructed before 1980 contain asbestos-containing materials. Asbestos may be found in insulation, floor tiles, ceiling materials, pipe coverings, roofing products, and other building components. While asbestos-containing materials may not pose a risk when undisturbed, renovation, demolition, or deterioration can release fibers into the air. Professional asbestos building inspections help identify suspect materials and determine whether laboratory analysis is necessary. A thorough asbestos inspection typically includes: Visual assessment of suspect materials Collection of representative samples Accredited laboratory analysis Detailed inspection reports Recommendations for management or abatement Property owners planning renovations should strongly consider asbestos testing before disturbing older building materials. Blog 331-462-2711 Request Quote

About Us Finding Inspiration in Every Turn This is your About Page. This space is a great opportunity to give a full background on who you are, what you do and what your website has to offer. Double click on the text box to start editing your content and make sure to add all the relevant details you want site visitors to know. Our Story Every website has a story, and your visitors want to hear yours. This space is a great opportunity to give a full background on who you are, what your team does, and what your site has to offer. Double click on the text box to start editing your content and make sure to add all the relevant details you want site visitors to know. If you’re a business, talk about how you started and share your professional journey. Explain your core values, your commitment to customers, and how you stand out from the crowd. Add a photo, gallery, or video for even more engagement. Meet The Team Don Francis Founder & CEO Ashley Jones Tech Lead Tess Brown Office Manager Lisa Rose Product Manager Kevin Nye HR Lead Alex Young Customer Support Lead Our Clients

Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 630-915-9434. Air Asbestos Lead Mold Radon Water Most homes in Naperville have never been tested for radon - Schedule your certified inspection today." Radon Is a Serious Risk in Skokie, Illinois Illinois is a high radon zone, and homes in Skokie are at risk, due to soil conditions and construction methods. Why Illinois Has Some of the Highest Radon Levels in the U.S. Illinois is classified as a Zone 1 Radon State, meaning a high probability of indoor radon levels exceeding 4.0 pCi/L. What Is Radon? (Scientific Overview) Radon is a radioactive noble gas formed from the decay of uranium in soil. It infiltrates structures through: Foundation cracks Sump pits Utility penetrations Crawlspaces and slab joints Once inside, radon accumulates—especially in basements and lower levels. Radon may be detected in elevated levels in up to the third level of a dwelling. Licensed Radon Testing & Mitigation Services in Skokie, IL Trusted Radon Testing in Skokie, Illinois If you're searching for licensed, insured environmental testing in Skokie, Illinois, with experience conducting tests that you need! Look no further: US Environmental Testing is recognized as a leading authority in radon testing, radon detection, and radon mitigation across Illinois, serving residential, commercial, government, healthcare, and educational facilities. Why Choose Us in Skokie, Illinois “We are Illinois’ leading environmental testing authority (2026) operating under EPA, ANSI, HUD, and OSHA-aligned protocols.” Trusted across Illinois. We operate under strict adherence to protocols outlined by the following Federal Agencies: American National Standard Institute (ANSI) HUD Environmental Protocols Illinois Emergency Management Agency, Department of Homeland Security (IEMA) Indoor Environments Association (IEA) National Emission Standards for Hazardous Air Pollutants (NESHAP) OSHA & NIOSH Safety Frameworks United States, Environmental Protection Agency (USEPA) National Institute for Occupational Safety and Health (NIOSH) United States Occupational Safety and Health Administration (OSHA) Our Services in Skokie, Illinois Asbestos Containing Materials (ACM) - Building Inspections Residential Asbestos Containing Materials (ACM) - Building Inspections Real Estate Asbestos Containing Materials (ACM) - Building Inspections Commercial Asbestos Containing Materials (ACM) - Building Inspections Lead-Based-Paint Risk Assessment & Lead-Based-Paint Sampling Residential Fungal Spore 'Mold' Risk Assessments Real Estate Fungal Spore 'Mold' Inspections Commercial Fungal Spore 'Mold' Risk Assessments Commercial Fungal Spore 'Mold' Inspections Residential Radon Testing Real Estate Radon Testing Commercial Radon Testing Industrial Radon Testing Daycare Radon Testing, Residential & Commercial Radon Mitigation System Design Post-Mitigation Radon Testing Serving Skokie, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Chicago, Illinois and surrounding suburbs and EPA Regions What Makes Us Different Compliance-First Approach We don't just test - we ensure full regulatory alignment. Scientific Precision Advanced monitoring equipment and calibrated data analysis. Multi-Sector Expertise Residential Capital Improvement (CI) Commercial Education Government Healthcare Industrial Illinois Radon Laws & Compliance (2026) Real Estate Transactions: Radon disclosure is required Testing is strongly recommended during inspection Schools: Illinois law recommends testing every 5 years Results often reported to state authorities Daycares: Required at time of initial DCFS license issuance and every 3 years for compliance (DCFS) Asbestos Asbestos inspection Skokie, IL Asbestos survey commercial Skokie, IL Asbestos testing near me Skokie, IL Mold Mold inspection Skokie, IL Black mold testing Skokie, IL Basement mold inspection Skokie, IL Lead Lead paint testing Skokie, IL Lead risk assessment Skokie, IL Lead inspection daycare Skokie, IL Schedule Radon Testing in Skokie, Illinois 📞 630-915-9434 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog Ph: 630-915-9434 Request Quote

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