High levels of toxins still present in Lahaina wildfire ash: DOH study

HONOLULU (Eagle News) – More than four months after massive fires devastated Lahaina and other parts of Maui Island, affecting more than 2,170 acres (878 hectares) and claiming at least 100 lives, elevated levels of arsenic, lead, antimony, cobalt, and copper still persist within the wildfire ash in the said West Maui town, according to the state’s Department of Health (DOH).

The ash samples were collected between November 7-8 from 100 properties in Lahaina, which had been constructed from the 1900s to the 2000s. The DOH results were released to the public on Sunday, December 10.

“These data validate that the Lahaina ash contains toxic substances,” said State Health Director Dr. Kenneth S. Fink. “While the concentrations of these substances are lower than the Kula [Central/Upcountry Maui] ash results, they are still elevated and it continues to be extremely important to take precautions.

“Inhaling disturbed ash and dust is also a potential route of exposure. We’ve been closely monitoring air quality in Lahaina and air sampling in Kula during debris removal, which have been reassuring,” Fink added.

(FILE) Remnants of the historic oceanside town of Lahaina as seen from the Kahoma Stream Bridge along the Lahaina Bypass Road in late August. (Photo by Des Acenas)

The U.S. Army Corps of Engineers is scheduled to lead the effort in removing the ash and debris in 2024. Until then, residents and business owners can minimize their exposure by avoiding disruption of the ash and wearing the appropriate personal protective equipment (PPE) in impacted areas. In addition, keeping surfaces clean of dust and ash and frequent handwashing can greatly reduce potential exposure.

Real-time air quality monitors are available online at fire.airnow.gov or by downloading the AirNow or IQAir Visual mobile apps.

Below are some recommended mitigations should toxic levels in the air become elevated:

  • Avoid outdoor activities to reduce exposure and minimize health risks.
  • Stay indoors and close all windows and doors. If an air conditioner is used, set it to the recirculate option.
  • If leaving the affected area, turn on the vehicle’s air conditioner and set it to the recirculate option.

(Alfred Acenas, Hawaii-Pacific Bureau, Eagle News Service)