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Is My Drywall Chinese? - HB Litigation Conferences

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Gaseous emissions<br />

Samples of corroded copper in wiring and HVAC<br />

equipment confirmed for sulfur-related sulfur related corrosion<br />

damage.<br />

Hydrogen sulfide emissions in the amount of 1.1<br />

ppm has been detected by St. Bernard Parish Fire<br />

Chief (also a resident with <strong>Chinese</strong> drywall). (55 x<br />

greater than ATSDR MRL intermediate duration<br />

inhalation)<br />

ATSDR MRLs for hydrogen sulfide:<br />

---acute ---acute<br />

duration (1-14 (1 14 days) inhalation=0.07 ppm (70 ppb)<br />

---intermediate<br />

---intermediate-duration<br />

duration (15-364 (15 364 days) inhalation= inhalation= 0.02 0.02 ppm ppm<br />

(20 ppb)<br />

Sources of the Filler in the <strong>Drywall</strong><br />

from China<br />

To be determined<br />

Possibilities based on preliminary results:<br />

incinerated wastes<br />

coal fly ash<br />

coal mine wastes<br />

combination of sources<br />

Analytical chemists have their work cut out for<br />

them

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