Summary of Recent SCAQMD Rules 1407 & 1407.1

Since fall 2016, the City of Paramount has been closely tracking a handful of rules set by the South Coast Air Quality Management District (SCAQMD) that are relevant to addressing and lowering metal-related emissions. Click here for a summary of Rules 1426, 1469, and 1480. Most recently, City staff have been staying up-to-date on Rules 1407 and 1407.1.

RULE 1407 – Control of Emissions of Arsenic, Cadmium, and Nickel from Non-Chromium Alloy Melting Operations

Originally adopted in July 1994, the purpose of this rule is to reduce emissions of arsenic, cadmium, and nickel from metal-melting operations that do not contain iron. This rule applies to owners and operators of various facilities including smelters (primary and secondary), foundries, die-casters, coating processes (galvanizing and tinning), and other miscellaneous processes such as dip soldering, brazing, and aluminum powder production.

RULE 1407.1 – Emissions of Toxic Air Contaminants from Chromium Alloy Melting Operations

The purpose of this rule is to gather information and quantify arsenic, cadmium, chromium, hexavalent chromium, and nickel emissions greater than 0.5% chromium content from chromium alloy melting operations. Like Rule 1407, this rule will apply to owners and operators conducting chromium alloy melting operations such as smelters (primary and secondary), foundries, die-casters, and other melting processes.

This rule is still being developed. SCAQMD will focus on obtaining information regarding facility operations, furnaces, composition of metals, recordkeeping, and emissions testing.

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