<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[US Environmental Testing LLC]]></title><description><![CDATA[US Environmental Testing offers licensed: lead risk assessments, mold assessment, and radon detections.  Book your Florida property inspection today!]]></description><link>https://www.usenvi.com/blog</link><generator>RSS for Node</generator><lastBuildDate>Wed, 24 Jun 2026 23:14:54 GMT</lastBuildDate><atom:link href="https://www.usenvi.com/en-us/blog-feed.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[ TOXIC TAPS]]></title><description><![CDATA[PFAS /Forever Chemicals Forever in the Faucet: PFAS in every Pour https://www.newsweek.com/states-drinking-water-most-pfas-contaminated-map-2117733 April 2025 - United States Environmental Protection Agency (US EPA): An estimated 172 Americans are drinking water contaminated with PFAS chemicals. PFAS in America: What You Need to Know Per- and polyfluoroalkyl substances (PFAS) are a large group of human-made chemicals used since the 1940s in products like nonstick cookware, water-resistant...]]></description><link>https://www.usenvi.com/en-us/post/toxic-taps</link><guid isPermaLink="false">6a39e04e106e96afab5fc0f1</guid><pubDate>Tue, 23 Jun 2026 01:24:36 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_a9ce2929c2db46599fb68e8419d3c3a4~mv2.webp/v1/fit/w_1000,h_900,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Water Analysi in the Age of PFAS and PFAAs]]></title><description><![CDATA[Water is Life - What if the cleanest-looking water you’ve ever seen carried chemicals that could last longer than your lifetime? That’s the reality with PFAS and PFAAs — invisible pollutants that challenge even the most advanced water testing methods. What Are PFAS and PFAAs? PFAS (Per- and Polyfluoroalkyl Substances) are a large family of synthetic chemicals used since the 1940s in products like non-stick cookware, waterproof clothing, firefighting foams, and food packaging. They are...]]></description><link>https://www.usenvi.com/en-us/post/water-analysi-in-the-age-of-pfas-and-pfaas</link><guid isPermaLink="false">6a39cc8ffa54cc84484bd661</guid><pubDate>Tue, 23 Jun 2026 00:12:40 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_0d7e24fd5e8343619ef4ddf7d8a99494~mv2.png/v1/fit/w_1000,h_846,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Why Radon Peaks in Winter? ]]></title><description><![CDATA[Three factors converge in Illinois winters to drive indoor radon concentrations to their annual highs: 1. Closed-building effect: When outdoor temperatures drop below freezing, windows and doors stay shut for months. Without natural ventilation, radon that seeps into the home has nowhere to go and accumulates steadily. 2. Stack effect: Warm indoor air rises and exits through upper portions of the building. This creates a slight negative pressure at the foundation level — essentially turning...]]></description><link>https://www.usenvi.com/en-us/post/seasonal-radon-levels-illinois</link><guid isPermaLink="false">6a32e003a0be590c66dbb885</guid><pubDate>Wed, 17 Jun 2026 18:02:12 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[How Sub-Slab Depressurization Works]]></title><description><![CDATA[An ASD system consists of four main components: Suction pit(s): One or more holes drilled through the concrete slab to access the aggregate layer beneath Piping: PVC pipe routed from the suction pit(s) through the building and to the exterior Fan: A continuously operating fan that maintains negative pressure beneath the slab Discharge point: The pipe terminates above the roofline or to the side of the building, away from windows and air intakes]]></description><link>https://www.usenvi.com/en-us/post/how-sub-slab-depressurization-works</link><guid isPermaLink="false">6a32dd8da0be590c66dbb2d1</guid><pubDate>Wed, 17 Jun 2026 17:48:20 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_9d62789ba35748f983765a6cf38067e3~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Active Sub-Slab Depressurization radon mitigation system ]]></title><link>https://www.usenvi.com/en-us/post/active-sub-slab-depressurization-radon-mitigation-system</link><guid isPermaLink="false">6a32dd359b47a7f91ae6b1bd</guid><pubDate>Wed, 17 Jun 2026 17:45:44 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_9d62789ba35748f983765a6cf38067e3~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Radon Mitigation Systems Explained: Sub-Slab Depressurization and Beyond]]></title><description><![CDATA[Radon mitigation is the process of reducing elevated radon concentrations inside a building to safe levels. In northern Illinois, the most effective and widely used technique is Active Sub-Slab Depressurization (ASD), a system that creates negative pressure beneath a building's foundation slab to prevent radon from entering the living space.]]></description><link>https://www.usenvi.com/en-us/post/radon-mitigation-systems-sub-slab-depressurization-chicago</link><guid isPermaLink="false">6a32d5ad73364b8eee6cd490</guid><pubDate>Wed, 17 Jun 2026 17:16:26 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_9d62789ba35748f983765a6cf38067e3~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Does my Chicago home automatically have high radon?]]></title><description><![CDATA[Not necessarily, but the regional geology puts all northern Illinois homes at elevated risk. Testing is the only way to know.]]></description><link>https://www.usenvi.com/en-us/post/does-my-chicago-home-automatically-have-high-radon</link><guid isPermaLink="false">6a31e9c66e3aac0bcf9c87cc</guid><pubDate>Wed, 17 Jun 2026 00:27:43 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[How long does radon testing take?]]></title><description><![CDATA[Short-term professional testing takes 48–96 hours. Long-term testing runs 90 days or more.]]></description><link>https://www.usenvi.com/en-us/post/how-long-does-radon-testing-take</link><guid isPermaLink="false">6a31e973655fbab867112ad3</guid><pubDate>Wed, 17 Jun 2026 00:25:37 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[EPA Action Level and Illinois Standards]]></title><description><![CDATA[The EPA recommends mitigation when indoor radon levels reach or exceed 4 picocuries per liter (pCi/L). Illinois also regulates the radon industry under the Illinois Radon Awareness Act (ILCS 420/7.9), requiring all radon measurement and mitigation professionals to be licensed by the Illinois Emergency Management Agency (IEMA). At US Environmental, all of our radon professionals hold current IEMA licenses and follow National Radon Proficiency Program (NRPP) and National Radon Safety Board...]]></description><link>https://www.usenvi.com/en-us/post/epa-action-level-and-illinois-standards-1</link><guid isPermaLink="false">6a31bcd8d98cc147601ed543</guid><pubDate>Tue, 16 Jun 2026 21:17:06 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_d41db24a831f412cb6f1ca69b09105d7~mv2.png/v1/fit/w_1000,h_672,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Short-term vs. Long-term radon testing]]></title><description><![CDATA[Short-term tests use activated-charcoal canisters deployed for 48–96 hours under closed-house conditions. They provide a rapid screening snapshot and are appropriate for real estate transactions or initial screening. Long-term tests use alpha-track detectors deployed for 90 days to one year. Because radon levels fluctuate with seasons, weather patterns, and occupancy behavior, long-term tests give the most accurate picture of actual annual exposure.]]></description><link>https://www.usenvi.com/en-us/post/short-term-vs-long-term-radon-testing</link><guid isPermaLink="false">6a31b2027ce5e131934f8d99</guid><pubDate>Tue, 16 Jun 2026 20:28:58 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[EPA Action Level and Illinois Standards]]></title><description><![CDATA[EPA Action Level and Illinois Standards The EPA recommends mitigation when indoor radon levels reach or exceed 4 picocuries per liter (pCi/L). Illinois also regulates the radon industry under the Illinois Radon Awareness Act (ILCS 420/7.9), requiring all radon measurement and mitigation professionals to be licensed by the Illinois Emergency Management Agency (IEMA). At USEnvironmental, all of our radon professionals hold current IEMA licenses and follow National Radon Proficiency Program...]]></description><link>https://www.usenvi.com/en-us/post/epa-action-level-and-illinois-standards</link><guid isPermaLink="false">6a31b1627ce5e131934f8c39</guid><pubDate>Tue, 16 Jun 2026 20:27:53 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[What Is Radon Gas? A Chicago Homeowner's Complete Guide  ]]></title><description><![CDATA[What is Radon? Radon is a radioactive noble gas that occurs naturally as uranium in soil and rock breaks down. It is colorless, odorless, and tasteless, making detection impossible without specialized tools. Health Risks of Radon The U.S. Environmental Protection Agency (EPA) categorizes radon as a Group A human carcinogen. It is identified as the second-leading cause of lung cancer in the United States, accounting for about 21,000 deaths each year. Why Chicago and Northern Illinois Are...]]></description><link>https://www.usenvi.com/en-us/post/what-is-radon-gas-a-chicago-homeowner-s-complete-guide</link><guid isPermaLink="false">6a31ac6621920c994c77a516</guid><pubDate>Tue, 16 Jun 2026 20:25:23 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[What Is Radon Gas? A Chicago Homeowner's Complete Guide ]]></title><description><![CDATA[what-is-radon-gas-Chicago-homeowners-guide  ]]></description><link>https://www.usenvi.com/en-us/post/what-is-radon-gas-a-chicago-homeowner-s-complete-guide-1</link><guid isPermaLink="false">6a31dc447ce5e131934ff364</guid><pubDate>Tue, 16 Jun 2026 05:00:00 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Radon gas in Chicago? A Chicago Homeowner's Complete Guide ]]></title><description><![CDATA[Helpful information on radon gas for homeowners and real estate transactions]]></description><link>https://www.usenvi.com/en-us/post/radon-gas-in-chicago-a-chicago-homeowner-s-complete-guide</link><guid isPermaLink="false">6a31ba42655fbab86710ab7d</guid><pubDate>Tue, 16 Jun 2026 05:00:00 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_3e415e4132c54e469710c1fcc048a4b3~mv2.png/v1/fit/w_474,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Asbestos Inspection vs. Asbestos Testing: Understanding the Difference Before You Renovate, Demolish, or Purchase a Property]]></title><description><![CDATA[US ENVIRONMENTAL TESTING LLC Asbestos Inspection vs. Asbestos Testing Understanding the Difference Before You Renovate, Demolish, or Purchase a Property What Is an Asbestos Inspection? An asbestos inspection is a comprehensive evaluation of a building performed by a trained and accredited asbestos inspector. The purpose of the inspection is to identify materials that may contain asbestos, determine their condition, and assess whether sampling is necessary. During an inspection, the inspector...]]></description><link>https://www.usenvi.com/en-us/post/asbestos-inspection-vs-asbestos-testing-understanding-the-difference-before-you-renovate-demolish</link><guid isPermaLink="false">6a2ed470963b3c1436e9a39a</guid><pubDate>Sun, 14 Jun 2026 16:19:49 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[US Radon Zone Map]]></title><description><![CDATA[What are the radon levels where I live? Illinois is located in Zone 1. Most Illinois Counties  have a predicted average indoor radon screening level greater than 4.0 pCi/L (picoCuries per liter air)]]></description><link>https://www.usenvi.com/post/us-radon-zone-map</link><guid isPermaLink="false">6a2dd0e528513bd3b38c7b90</guid><category><![CDATA[Radon Detection]]></category><pubDate>Sat, 13 Jun 2026 21:53:12 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_c417a7e82bba482e8342e86a38304f21~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Understanding PLM and TEM Asbestos Testing: Why It Remains Crucial in 2026]]></title><description><![CDATA[Introduction: Why Asbestos Testing Still Matters in 2026. Even in 2026, asbestos remains a serious health hazard in older buildings, industrial facilities, and certain imported materials. While asbestos use has been heavily restricted in many countries, it still exists in insulation, floor tiles, roofing, cement products, and even some automotive parts. The danger lies in asbestos fibers becoming airborne — once inhaled, they can cause mesothelioma, asbestosis, and lung cancer decades later....]]></description><link>https://www.usenvi.com/post/understanding-plm-and-tem-asbestos-testing-why-it-remains-crucial-in-2026</link><guid isPermaLink="false">6a2d7d98530d39995f689624</guid><category><![CDATA[Asbestos Containing Materials (ACM)]]></category><pubDate>Fri, 12 Jun 2026 17:37:09 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[Why Radon Testing Is Critical During Summer Months]]></title><description><![CDATA[The Hidden Seasonal Risk Most Homeowners Ignore When most people think about radon testing, they assume winter is the only time that matters. Closed windows, sealed homes, and stagnant air seem like the perfect conditions to detect this invisible gas. But that assumption is incomplete—and in many cases, dangerous. Summer radon testing is not only important—it’s essential for accurate risk assessment, real estate transactions, and year-round exposure protection. What Is Radon and Why It...]]></description><link>https://www.usenvi.com/post/why-radon-testing-is-critical-during-summer-months</link><guid isPermaLink="false">6a2d7d98530d39995f68961a</guid><category><![CDATA[Radon Detection]]></category><pubDate>Thu, 04 Jun 2026 20:15:23 GMT</pubDate><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[How Do I Know If My Home Has High Radon?]]></title><description><![CDATA[If you’re asking this question, you’re already ahead of most homeowners. As an Illinois licensed radon measurement professional (RNM2015202), I’ve been performing radon testing since 2015 in residential, commercial, daycare, and multi-family buildings. Over the years, one thing has become clear: you cannot identify elevated radon levels just by looking at a home. You have to test.]]></description><link>https://www.usenvi.com/post/how-do-i-know-if-my-home-has-high-radon</link><guid isPermaLink="false">6a2d7d98530d39995f68961c</guid><category><![CDATA[Radon Detection]]></category><pubDate>Thu, 04 Jun 2026 18:43:04 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_d41db24a831f412cb6f1ca69b09105d7~mv2.png/v1/fit/w_1000,h_672,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item><item><title><![CDATA[What I see in the field]]></title><description><![CDATA[In Illinois, especially across many western suburban areas, I’ve repeatedly seen consistently elevated radon levels across neighborhoods with similar architectural styles. These homes often sit on similar soil profiles, and that matters more than age, design, or occupancy habits. Radon is a byproduct of uranium naturally present in soil and rock. Because of that, all homes have some level of radon—the IMPORTANT QUESTION, how much radon is in your home?]]></description><link>https://www.usenvi.com/post/what-i-see-in-the-field-1</link><guid isPermaLink="false">6a2d7d98530d39995f689626</guid><category><![CDATA[Radon Detection]]></category><pubDate>Tue, 02 Jun 2026 12:26:32 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/80fd51_5ff659d8dbbc4830b8f893e21da249b9~mv2.png/v1/fit/w_750,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Tim Peiffle</dc:creator></item></channel></rss>