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The Tennessee Air Pollution Control Board (“Board”) issued a May 4th Proposed Technical Secretary’s Order and Assessment of Civil Penalty (“Order”) to AZZ Galvanizing – Chattanooga LLC (“AZZ”) addressing an alleged violation of an air permit. See Case no. AP22-0146.

The Order states that AZZ operates a steel galvanizing Facility (“Facility”) consisting of two molten zinc kettles with two natural gas fired heaters, two associated chromate quench tanks with one natural gas fired boiler.

The Facility operates pursuant to Operating Permit 071868 (‘Permit”).

Condition 4 of the Permit is stated to provide in part:

The maximum mass rate of galvanized product output for this source shall not exceed 11,500 lb/hr (5.75 tons/hr) on a daily average basis. The total mass rate of galvanized product output shall include the rate at which product is galvanized in both the primary 42' Kettle and the secondary 18' Kettle.

Tennessee Division of Air Pollution Control personnel are stated to have conducted an inspection on July 21, 2022, of the Facility. The inspection is stated to have included the review of onsite records from June 2020 through June 2022. The inspection is stated to have indicated that the mass rate of galvanized product output limit was 13,163 pounds per hour on April 1, 2021, and 13,792 pounds per hour on August 14, 2021. This is stated to constitute a failure to comply with Condition 4 of the Permit.

The Order proposes a civil penalty of $1,500.

The Order provides certain appeal rights.

A copy of the Order can be downloaded here.