--- title: "Industrial Hygiene Expert’s Testimony on Environmental Exposure Limited" meta: "og:description": "The industrial hygiene expert was allowed to opine on the presence of asbestos in multiple locations surrounding areas Decedent frequented" "og:title": "Industrial Hygiene Expert’s Testimony on Environmental Exposure Limited" author: "Expert Witness Profiler" description: "The industrial hygiene expert was allowed to opine on the presence of asbestos in multiple locations surrounding areas Decedent frequented" --- # Industrial Hygiene Expert’s Testimony on Environmental Exposure Limited Posted on April 6, 2026 by Expert Witness Profiler Plaintiffs Erica Dandry Constanza and Monica Dandry Hallner alleged that Decedent Michael P. Dandry, Jr., while an employee for Huntington Ingalls Incorporated’s (“Avondale”), was exposed to asbestos and asbestos-containing products manufactured, distributed, sold, and/or handled by Avondale and other parties. Decedent was born in 1953, and the family home at the time of his birth was located at 407 Meyers Boulevard in Marrero, Louisiana, where he lived until he was two years old. Decedent also worked at a shoe repair shop located at 409 Meyers Boulevard. Both of these properties were part of a larger property located in the 400 block of Myers Boulevard at the intersection of Fourth Street, which was owned by Decedent’s grandfather. Decedent’s sisters and daughters testified that the Dandry family property located in the 400 block of Meyers Boulevard at the intersection of Fourth Street in Marrero was one property owned by Michael Dandry, Jr.’s grandfather, Randolph Dandry. The testimony of Decedent’s sisters confirms that Decedent played in the driveway/courtyard area, they played in a galvanized tub of water in the driveway area, they were always “in and out” of the various Dandry businesses, and they continued to visit the family property even after moving to Oak Street. Plaintiffs filed a motion to exclude certain opinions of Defendant Bayer CropScience, Inc.’s expert in industrial hygiene, [Michael Holton](https://expertwitnessprofiler.com/expert-witness/Michael-Holton/1573447). ## **Industrial Hygiene Expert Witness** [Michael Holton](https://expertwitnessprofiler.com/expert-witness/Michael-Holton/1573447) is a Board-Certified Industrial Hygienist (CIH), a Board-Certified Safety Professional (CSP), and a Registered Environmental Health Specialist (REHS) in the state of New Jersey (inactive status) and has comprehensive industrial hygiene experience involving exposure assessment, ventilation system design, regulatory compliance auditing, and program development and training. [Get the full story on challenges to Michael Holton’s expert opinions and testimony with an in-depth Challenge Study](https://expertwitnessprofiler.com/order/add?eId=1573447&pId=3). ## **Discussion by the Court** Holton concluded there is “reasonably significant potential for community asbestos exposures to residents of Marrero, LA” and Decedent “more likely than not had exposure to amphibole forms of asbestos, including crocidolite, from living his entire life in the Westbank, LA area.” Reagan Maloney was hired by Avondale to take soil samples from the property. The Court, however, excluded Maloney’s testimony about the testing performed on those soil samples. While Holton relied wholly on Maloney’s report to establish that the soil at Decedent’s childhood family property contains asbestos, he did offer one alternative theory for Decedent’s potential environmental exposure. Holton opined that Decedent may have had environmental exposure to asbestos due to the close proximity of various properties he frequented while living and working on the Westbank, and those properties which were found to have soil contaminated with asbestos in the 90s and 2005 reports. With Maloney’s report excluded, Holton’s opinions about Decedent’s possible environmental exposures are based solely on the proximity theory and the circumstantial evidence of nearby asbestos-contaminated properties. Testing confirming the presence of asbestos in multiple locations surrounding areas where Decedent frequented on the Westbank is enough to support an opinion regarding what exposure to asbestos Decedent might have had living on the Westbank. However, Holton was not allowed to rely on Maloney’s report or opinions. ## **Held** The Court granted in part and denied in part Plaintiffs’ motion to preclude certain opinions of Michael Holton. ## **Key Takeaway** Although in some cases, “the source upon which an expert opinion relies is of such little weight that the jury should not be permitted to receive that opinion,” Plaintiffs have not demonstrated that this is such a case. Please refer to the blog previously published about this case: [Radiation Oncology Expert’s “State of the Art” Opinions Admitted](https://expertwitnessprofiler.com/radiation-oncology-experts-state-of-the-art-opinions-admitted) [Industrial Hygiene Expert’s Testimony on Asbestos Exposures Admitted](https://expertwitnessprofiler.com/industrial-hygiene-experts-testimony-on-asbestos-exposures-admitted) ## **Case Details:** --- ## **You Might Also Like** ![Industrial Hygiene Expert's Testimony on Environmental Exposure Limited](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-06T194531.503.jpg) [**Industrial Hygiene Expert’s Testimony on Environmental Exposure Limited**](https://expertwitnessprofiler.com/industrial-hygiene-experts-testimony-on-environmental-exposure-limited/industrial-hygiene-experts-testimony-on-environmental-exposure-limited)![Psychology Expert's Testimony on Grooming Limited](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-06T164223.328.jpg) [**Psychology Expert’s Testimony on Grooming Limited**](https://expertwitnessprofiler.com/industrial-hygiene-experts-testimony-on-environmental-exposure-limited/psychology-experts-testimony-on-grooming-limited)![Mechanical Engineering Expert Allowed to Opine on the Behavior of Wheelchairs](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-03T203819.018.jpg) [**Mechanical Engineering Expert Allowed to Opine on the Behavior of Wheelchairs**](https://expertwitnessprofiler.com/industrial-hygiene-experts-testimony-on-environmental-exposure-limited/mechanical-engineering-expert-allowed-to-opine-on-the-behavior-of-wheelchairs)![Insurance Expert Not Allowed to Opine on Industry Standards](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-03T192250.590.jpg) [**Insurance Expert Not Allowed to Opine on Industry Standards**](https://expertwitnessprofiler.com/industrial-hygiene-experts-testimony-on-environmental-exposure-limited/insurance-expert-not-allowed-to-opine-on-industry-standards)![Credit Reporting Expert Not Allowed to Opine on Intentions](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-03T160159.490.jpg) [**Credit Reporting Expert Not Allowed to Opine on Intentions**](https://expertwitnessprofiler.com/industrial-hygiene-experts-testimony-on-environmental-exposure-limited/credit-reporting-expert-not-allowed-to-opine-on-intentions)