GENERAL46371

• Permit No: M1977208
• IBM Index Class Name: General Documents
• Doc Date: 12/10/2002
• Doc Name: Literature: Tire Fire Contingency Plan
• From: CEMEX Inc.
• To: DMG
• Media Type: D
• Archive: No

I. CHEMICAL COMPOUND PROFILE
INTRODUCTION
The purpose of this section is to identify the chemicals which are released during a fire fire and
select a subset of chemicals that should be monitored during a fire fire. The selection of
"target chemicals" was based upon potential health effects (ihe toxicity of the chemical) and
the amount emitted during a fire fire (the concentration of the chemical). Chemicals found in
smoke and pyrolytic oil were identified. In addition, the health effects and the exposure routes
for the target chemicals were assessed.
APPROACH
Initially, the first approach to chemical selection was to review the emissions data collected
from fire fires and determine which chemicals were of most concern. A review of published
studies and reports discussing the emissions from fire fires indicated that a variety of collection
and analytical methods were used az well az differing levels of quality control. Based upon the
variations in sampling methods, the data sets were not easily comparable. After agreement
from Tacoma Pierce County Health Department ('I'PCHD), a second approach to this task was
taken.
The secon8 approach waz to use two existing data seu with consistent methods and reliable
quality control procedures. One set is the air monitoring data collected by the Environmental
Protection Agency (EPA) at nine fire fire locations. The EPA data came from emissions data
from fire fires in Wisconsin, Washington, Virginia, Arkansas, Colorado, North Carolina, New
York, Pennsylvania, and Utah. The other set is from a test burn which identified and
quantified organic and inorganic emissions produced during the burning of scrap tires. Data
were collected from test bums of both chunked and shredded tires. The chunk tires were cut
into pieces 1/4 to 1/6 the size of an automobile-sized tire. The shredded tires measured 2
inches by 2 inches. For the purposes of this report, the chunk data were the only data used, az
it was concluded that the chunk tires were more representative of the type of material that
would be found at a tine pile fire. These data were collected under laboratory conditions and
are a good indication of the emissions within close proximity to the fire. These data are given
in a report called "Characterization of Emissions from the Simulated Open Burning of Scrap
Tires" by Acurex Corp. and are referred to in this document az the Acurex data.
The Acurex and EPA data sets were evaluated and target chemicals were selected based upon
toxicity and concentration. Figure 1 gives a flow chart for target chemical selection.
The first step was simply that the chemical had to be in either the EPA or the Acurex data set
and have a detectable level of emission. The second step was to evaluate whether or not the
chemical was a suspected or confirmed human carcinogen. If i[ was, it became a target
chemical, regardless of the recorded emission value. Carcinogenicity was assessed through the
Health Effects Assessment Summary Tables produced by EPA and the Threshold Limit Values