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Facilities of Ashgrove Cement (Formerly North Texas Cement)
Formally called Gifford-Hill,
this is another wet process cement plant originally built in 1965. It is now
owned by Ash Grove Cement, which is headquartered in Kansas City. NTCC has
three kilns and is the second largest cement plant in Midlothian. North
Texas burned hazardous waste from 1986 to 1991. It began burning whole tires
in 1995. Like TXI, it disposes of its waste residues in the form of CKD
on-site in a quarry. And like TXI's older kilns, it only has dust catchers
(and not very good ones) for pollution control.
North Texas was on a list that emerged from the federal government in
1991 that itemized all disposal and treatment facilities nationwide that
could have received mislabeled or unlabeled radioactive waste from a
Colorado federal facility. Now defunct Gibraltar in Winona, Texas and other
waste "blenders" that supplied hazardous waste to TXI and North Texas were
also on this list. Neither North Texas nor TXI were testing in-coming waste
for radioactivity at the time.
North Texas is located immediately south of the Lake Ridge real estate
development and Cedar Hill. Tire Burning Emissions: According to the
literature, tire burning can result in CO, SOX and NOX, PM, Hydrocarbons,
metals such as zinc, arsenic, cadmium, chromium and lead, dioxins, PAHs,
PCBs and benzene.
Based on some stack testing, tires are said to have higher sulfur content
compared to most coal. Chlorine and HCL emissions are also noted to rise.
Chemicals Listed in
Toxic Release Inventory Emissions:1987-91
Acetone MEK Acetonitrile Methyl Isobutyl Ketone Acrylonitrile Naphthalene
Aniline N-Butyl Alcohol Benzene Pentachlorophenol Carbon Disulfide Phenol
Carbon Tetrachloride Phthalic Anhydride Chlorine Propylene Oxide Chloroform
Styrene Cyclohexane Tetrachloroethylene 1,2, Dichlorobenzene Toluene 1, 2,
Dichloromenthane 1,2,4 Trichlorobenzene Epichlorohydrin 1,1,1
Trichloroethane Ethylbenzene Trichloroethylene Ethylene Glycol Xylene
Formaldehyde Freon 113 Methanol 2-Methoxyethonol
1999 Totals for Actual "Conventional" Pollution Inventoried by State:
- Particulate Matter 659 tons
- Sulfur Dioxide 3,632 tons
- Nitrogen Oxide 2,003 tons
- Volatile Organic Compounds 45 tons
- Carbon Monoxide 506 tons
Current Permit Allowables:
- NOX 9,528 tons/yr
- CO 1,314 tons/yr
- PM 10 863 tons/yr
- VOC 120 tons/yr
- SO2 7,528 tons/yr
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