Licensed asbestos, lead-based paint, mold, radon & water testing across Chicago and the surrounding 100 miles. AIHA-accredited lab. Call 630-915-9434. US Environmental Testing, Offering Nationwide Asbestos Services: "What is asbestos testing?" "What is lead paint testing?" "What is mold testing?" "What is radon testing?" Asbestos Inspection & Testing Services Nationwide US Environmental Testing provides certified asbestos inspection, sampling, and laboratory testing services for residential, commercial, industrial, and government properties across the United States. What is Asbestos and Why It Matters Asbestos is a regulated hazardous material linked to serious health risks including mesothelioma, lung cancer, and asbestosis. It is commonly found in building materials installed prior to the 1980s . Our Asbestos Services Asbestos Building Inspections Comprehensive inspections performed by EPA and AHERA-certified inspectors. Asbestos Sampling & Laboratory Analysis Bulk sampling with NVLAP-accredited laboratory analysis. Asbestos Surveys Pre-demolition surveys Pre-renovation surveys NESHAP compliance inspections Residential & Commercial Services Homes Schools Hospitals Industrial facilities Government buildings Regulatory Compliance We follow strict compliance with: EPA AHERA regulations NESHAP requirements OSHA exposure standards Where Asbestos is Commonly Found: Popcorn ceilings Floor tiles and mastic Pipe insulation Vermiculite insulation Types of Asbestos Why Choose US Environmental Testing Multi-state licensed inspectors 10+ years experience Rapid turnaround times Certified laboratory partnerships Full regulatory compliance Service Areas We provide nationwide asbestos inspection services with strong coverage in major metropolitan areas. National Service Areas (Service Area Map ) EPA Region 4 Alabama, Mobile (Statewide) Florida, Tallahassee (Statewide) Georgia, Savanah (Statewide) Kentucky, Lexington (Statewide) Mississippi, Jackson (Statewide) North Carolina, Raleigh (Statewide) South Carolina, Columbia (Statewide) EPA Region 5 Illinois, Chicago (Statewide) Indiana, Indianapolis (Statewide) Michigan, Detroit (Statewide) Minnesota, Minneapolis (Statewide) Ohio, Columbus (Statewide) Wisconsin, Madison (Statewide) EPA Region 9 American Samoa, Tafuna (Territory wide) Arizona, Phoenix (Statewide) California, Los Angeles (Statewide) Guam, Dededo Hawaii, Honolulu (Statewide) Nevada, Las Vegas (Statewide) Northern Mariana Islands Saipan Northern Illinois Counties: Services Available within 24-hours of request. DuPage County Cook County Lake County McHernry County Boone County Winnebago County Kane County Kendall County Grundy County Will County Kankakee County All other Illinois Counties by appointment. See other service areas here Schedule Asbestos Testing Today! 📞 331-462-2711 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog 331-462-2711 Request Quote

Air Asbestos Lead Mold Radon Water "National standards, compliant care, precise results for water, soil, and air—US Environmental." Test-only. No remediation. No conflict of interest. 2027 US Environmental Testing Privacy Policy This Privacy Policy outlines the practices of Northern Illinois Radon LLC regarding the collection, use, maintenance, and disclosure of information obtained from users (each, a "User") of the niradon.com/usenvi.com websites ("Sites"). This policy applies to the Site and all products and services offered by Northern Illinois Radon LLC (dba US Environmental Testing). Personal Identification Information We may collect personal identification information from Users in various ways, including but not limited to, visiting our site, registering, placing orders, subscribing to newsletters, responding to surveys, filling out forms, and engaging in other services we offer. Users can visit our Site anonymously but must voluntarily submit personal information if they wish to engage in specific site functions. Users may refuse to provide personal information, which may limit their ability to participate in certain activities. Non-Personal Identification Information We may gather non-personal identification information about Users whenever they interact with our Site. This information may include the browser name, the type of device, and technical details about Users’ means of connecting to our Site, such as the operating system and Internet service providers used. Cookies Our Site may utilize "cookies" to enhance User experience. Users’ web browsers place cookies on their hard drives for record-keeping and tracking purposes. Users can set their browsers to refuse cookies or to alert them when cookies are sent; however, some parts of the Site may not function correctly if cookies are disabled. How We Use Collected Information Northern Illinois Radon LLC may use Users' personal information for the following purposes: To Improve Customer Service: Information you provide helps us respond more efficiently to customer support needs. To Personalize User Experience: We may aggregate information to understand how users collectively utilize our services and resources. To Improve Our Site: Feedback provided by Users may be used to improve our offerings. To Process Payments: Information provided during order placements will be used solely for transaction purposes and will not be shared with outside parties. To Run Promotions and Surveys: User information may be used to send relevant information to Users. To Send Periodic Emails: We may use the email address provided to send updates, reply to inquiries, and share news on our services. Users can opt-out using the unsubscribe instructions included in our emails. Payment Terms Payments for all services are due at the time of service or upon conclusion of services. If payment is not received within seven days of service, collection efforts will be handed over to the Empire Agency, Empire Credit and Collection, 26 Railroad Avenue #117, Babylon, New York 11702. All collection fees will be the client's responsibility. All data remains the property of Northern Illinois Radon LLC until full payment is received, after which the reports/results will be released to the client. For electronic payments, please use: payments@niradon.com . 1. Returned Check Fees: A fee of $50 will be charged for checks returned by banks due to insufficient funds (NSF) or closed accounts. Failure to pay an invoice will void current and previous radon measurements and results. 2. Calendar Days: Calendar Days are defined as Monday through Friday, including Saturday and Sunday, with holidays included in invoice due dates. 3. Modifications: Amendments may not be performed on active contracts. To amend an active contract, it must be: i) paid in full, ii) concluded with results delivered, or iii) canceled entirely. A new estimate, contract, or proposal will then need to be drafted. 4. Non-Interference: Clients agree to adhere to Northern Illinois Radon LLC's Non-Interference Policy, as the quality of radon measurements is reliant on the measurement environment. For questions or concerns regarding radon measurements, clients can contact Northern Illinois Radon LLC at info@niradon.com or 630-915-9434, at any time during or after the measurement. Violations of closed-building conditions cannot be considered after results are released. 5. Cancellations/Rescheduling: Changes not performed within 24 hours of a scheduled appointment will incur a $100 fee. 6. No-Show Fee: Failure to arrive for a confirmed appointment, including lockout of the building for any reason preventing the radon professional from conducting business, will result in a $100 fee. Data Protection We implement appropriate data collection, storage, and processing practices, along with security measures, to protect against unauthorized access, alteration, disclosure, or destruction of Users' personal information, including usernames, passwords, and transaction data. Sharing Personal Information We do not sell, trade, or rent Users' personal information. Generic aggregated demographic information may be shared with business partners, trusted affiliates, and advertisers. We may use third-party service providers to assist us in operating our business; these entities may have limited access to personal information only as needed and require prior consent from Users. Release of Data / Reporting All sampling data and reports are property of Northern Illinois Radon, until complete payment has been received for services, at which time data and reports will be transferred to paying customer. Correspondence will be between the company and client. The company is not responsible for third-party interpretations or correspondence, including but not limited to communications with associations, contractors, laboratories, lawyers, lenders, realtors, or other parties. Third party consulting is available upon request and with written consent, on an hourly rate basis. Blog Call/Text: 331-462-2711 Quote

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

Discover licensed asbestos building inspections, lead-based paint and sampling, licensed radon testing and mitigation, and water assessments in Glen Ellyn, IL. Protect your home with expert testing & mitigation services today! Air Asbestos Lead Mold Radon Water Radon Is a Serious Risk in Glen Ellyn, Illinois Illinois is a high radon zone, and homes in Glen Ellyn 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 Glen Ellyn, IL Trusted Radon Testing in Glen Ellyn, Illinois If you're searching for licensed, insured environmental testing in Glen Ellyn, 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 Glen Ellyn, 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 Glen Ellyn, 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 Glen Ellyn, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Glen Ellyn, 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) Schedule Radon Testing in Naperville, Illinois 📞 331-462-2711 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog 331-462-2711 Request Quote

Tim Peiffle Environment Professional US Environmental Testing More Than a Decade of Environmental Testing Experience | Multidisciplinary Environmental Assessment | Residential, Commercial & Government Projects Timothy Peiffle is an environmental testing professional and the lead representative of US Environmental Testing LLC, an independent environmental testing and assessment organization headquartered in Glen Ellyn, Illinois. Since 2015, Timothy has developed extensive experience coordinating and performing environmental inspections, sampling, testing, and risk assessments involving hazardous building materials, indoor environmental conditions, and potential chemical and biological contaminants. His professional focus encompasses asbestos-containing materials, lead-based paint, mold and microbial assessments, radon measurement, indoor air quality, volatile organic compounds (VOCs), advanced chemical and material identification, and specialized water quality investigations. Timothy's multidisciplinary experience allows US Environmental Testing to assist clients who need more than an isolated inspection. His approach considers the building, its intended use, applicable environmental regulations, sampling methodology, laboratory analytical capabilities, and the practical implications of the findings. Professional Areas of Expertise Asbestos Inspection & Environmental Assessment Asbestos-containing building material inspections. Bulk material sampling and laboratory coordination. Vermiculite, insulation, flooring, roofing, and building material identification. Commercial, residential, renovation, and demolition assessments. Asbestos air sampling and analytical coordination. Lead-Based Paint & Lead Exposure Assessment Lead-based paint inspections. Lead risk assessments. Paint-chip and dust-wipe sampling. Soil and environmental lead sampling. HUD-related residential and housing assessments. Child-occupied facilities and educational environments. Mold & Microbial Assessments Residential and commercial mold assessments. Moisture-related environmental investigations. Airborne fungal spore and surface sampling. Laboratory identification and interpretation. Post-remediation environmental evaluations. Radon Measurement & Detection Residential and commercial radon measurement. Multifamily housing and institutional testing. School and daycare radon measurement. Real estate transaction testing. Post-mitigation verification testing. ANSI/AARST-aligned measurement practices. Advanced Chemical Identification & Indoor Air Quality Volatile organic compound (VOC) investigations. Indoor air quality assessments. Chemical and material identification. Specialized environmental sampling. Investigation of potential airborne chemical contaminants. Water Quality & Contaminant Testing Drinking water quality assessments. Lead in drinking water. Legionella investigations. PFAS and related fluorinated compound testing. Heavy metals and chemical contaminant analysis. Coordination with appropriately qualified analytical laboratories. State-Specific Professional Credentials The following professional credentials have been identified for Timothy Peiffle and are published for transparency. Credential status, expiration dates, and issuing-agency verification links should be maintained on the company's official credential directory. Florida – Mold Risk Assessor Hawaii – Asbestos Inspector: License No. HIASB-5747. Illinois – Asbestos Professional: License No. 100.19970. Illinois – Lead-based-paint Risk Assessor: Illinois Department of Public Health License No. 100.2747. Illinois – Radon Measurement Professional: No. RNM2015202. South Carolina – Asbestos Consultant: SCDES No. BI-002428. Wisconsin – Lead Professional: DHS ID No. 2777530. Wisconsin – Radon Measurement Professional Water Analysis, Collections overseen by T. Peiffle. Analysis performed by third - party laboratory. Professional Affiliations American Association of Radon Scientists and Technologists: Membership ID A6690. Indoor Environments Association: Professional affiliation.

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 Most homes in Barrington have never been tested for radon - Schedule your certified inspection today." Radon Is a Serious Risk in Barrington, Illinois Illinois is a high radon zone, and homes in Barrington 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 Barrington, IL Trusted Radon Testing in Barrington, Illinois If you're searching for licensed, insured environmental testing in Barrington, 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 Barrington, 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 Barrington, 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 Barrington, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Barrington, 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 Barrington, IL asbestos survey commercial Barrington, IL asbestos testing near me Barrington, IL Mold mold inspection Barrington, IL black mold testing Barrington, IL basement mold inspection Barrington, IL Lead lead paint testing Barrington, IL lead risk assessment Barrington, IL lead inspection daycare Barrington, IL Schedule Radon Testing in Barrington, Illinois 📞 724-467-7328 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog Ph: 630-915-9434 Request Quote

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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 Chicago have never been tested for radon - Schedule your certified inspection today." Over 11 years of Licensed Inspection Services, 5000 + Inspections & 5 ★ Rated! Free Estimates - All Insurance Accepted Our Services: National standards, compliant care, precise results for air, asbestos, lead-paint, soil, and water—US Environmental Radon Is a Serious Risk in Chicago, Illinois Illinois is a high radon zone, and homes in Chicago 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 Chicago, IL Trusted Radon Testing in Chicago, Illinois If you're searching for licensed, insured environmental testing in Chicago, 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 Chicago, 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 Chicago, 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 Chicago, 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 Asbestos asbestos inspection Chicago, IL asbestos survey commercial Chicago, IL asbestos testing near me Chicago, IL Mold mold inspection Chicago, IL black mold testing Chicago, IL basement mold inspection Chicago, IL Lead lead paint testing Chicago, IL lead risk assessment Chicago, IL lead inspection daycare Chicago, IL Water Testing & Quality Assurance Reporting Schedule Radon Testing in Chicago, Illinois 📞 331-462-2711 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." 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 630-915-9434. Air Asbestos Lead Mold Radon Water Most homes in Itasca have never been tested for radon - Schedule your certified inspection today." Radon Is a Serious Risk in Itasca, Illinois Illinois is a high radon zone, and homes in Itasca 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 Itasca, IL Trusted Radon Testing in Itasca, Illinois If you're searching for licensed, insured environmental testing in Itasca, 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 Itasca “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 Itasca, 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 Itasca, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Itasca, 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 Itasca, IL asbestos survey commercial Itasca, IL asbestos testing near me Itasca, IL Mold mold inspection Itasca, IL black mold testing Itasca, IL basement mold inspection Itasca, IL Lead lead paint testing Itasca, IL lead risk assessment Itasca, IL lead inspection daycare Itasca, IL Schedule Radon Testing in Itasca, Illinois 📞 630-915-9434 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog Ph: 630-915-9434 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 Wilmette, Illinois Illinois is a high radon zone, and homes in Wilmette 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 Wilmette, IL Trusted Radon Testing in Wilmette, Illinois If you're searching for licensed, insured environmental testing in Wilmette, 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 Wilmette, 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 Wilmette, 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 Wilmette, Illinois and Nearby Areas & Regions: Service Areas We proudly serve Wilmette, Illinois and surrounding suburbs and EPA Regions Most homes in Wilmette 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 Wilmette, IL Asbestos survey commercial Wilmette, IL Asbestos testing near me Wilmette, IL Mold Mold inspection Wilmette, IL Black mold testing Wilmette, IL Basement mold inspection Wilmette, IL Lead Lead paint testing Wilmette, IL Lead risk assessment Wilmette, IL Lead inspection daycare Wilmette, IL Schedule Radon Testing in Wilmette, Illinois 📞 630-915-9434 📧 info@usenvi.com 🌐 www.usenvi.com "Fast. Accurate. Experienced. Knowledgeable." Blog Ph: 630-915-9434 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. Air Asbestos Lead Mold Radon Water Test-only. No remediation. No conflict of interest. Radon levels in your county Improved radon gas mapping finds nearly 25% of Americans are living in highest risk areas Learn More Here The Importance of Radon Testing Radon: The Silent Killer Asbestos Testing Blog 331-462-2711 Request Quote