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7/24/2019 Bact Tanks PV
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TCEQ – (APDG 6298, Revised 06/15)This information is maintained by the Chemical NSR Section and is subject to change.Page 1 of 1
TCEQ Chemical Sources
Current Best Available Control Technology (BACT) Guidelines
Storage Tanks
This information is maintained by the Chemical NSR Section and is subject to change. Last update 06/2015.
Year Source Type Pollutant Minimum Acceptable Control Control Efficiency or Details
2015 AtmosphericStorage Tanks
Tank capacity< 25 MgalorTVP < 0.50 psia
Fixed roof with submerged fill. White or aluminumuninsulated exterior surfaces exposed to the sun.
Tank Capacity≥ 25 Mgal and
0.50 psia < TVP< 11.0 psia
Internal floating roof (IFR). White or aluminumuninsulated exterior surfaces exposed to the sun.
Alternative 1: Primary seal: mechanical orliquid mounted
Alternative 2: Primary seal: vapor mounted
and Secondary seal: rim mounted
Drain dry design (new tanks only)
External floating roof (EFR). White or aluminumuninsulated exterior surfaces exposed to the sun.Slotted guide pole fittings must have gasketed cover,and at least 2 of the following – wiper, float, or sleeve.
Primary seal: mechanical or liquid mounted,and Secondary seal: rim mounted
Drain dry design (new tanks only)
Vent to control Appropriate control device efficiency
Tank Capacity≥ 25 Mgal
andTVP ≥ 11.0 psia
Vent to control Appropriate control device efficiency