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Coal tar
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Coal tar is incorporated into some parking-lot sealcoat products, which are used to protect and beautify the underlying pavement.[2] Sealcoat products that are coal-tar based typically contain 20 to 35 percent coal-tar pitch.[2] Substantial concerns have been raised about the safety of this application of coal tar, given that coal tar is known to cause cancer in humans and that several PAH compounds in coal tar are toxic to aquatic life.[3]
The primary use of coal tar based sealcoats is regional within the US[2] but federal research [4] shows it is used in states from Alaska to Florida and several areas have banned its use in sealcoat products [5][6][7] including: The District of Columbia; the City of Austin, Texas; Dane County, Wisconsin; Washington State; and several municipalities in Minnesota and others.[
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Coal tar is incorporated into some parking-lot sealcoat products, which are used to protect and beautify the underlying pavement.[2] Sealcoat products that are coal-tar based typically contain 20 to 35 percent coal-tar pitch.[2] Substantial concerns have been raised about the safety of this application of coal tar, given that coal tar is known to cause cancer in humans and that several PAH compounds in coal tar are toxic to aquatic life.[3]
The primary use of coal tar based sealcoats is regional within the US[2] but federal research [4] shows it is used in states from Alaska to Florida and several areas have banned its use in sealcoat products [5][6][7] including: The District of Columbia; the City of Austin, Texas; Dane County, Wisconsin; Washington State; and several municipalities in Minnesota and others.[
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