| (a) Before abrasive blasting is performed on any previously coated water storage tank, the owner or operator of the tank must determine if lead is present in the existing protective coating by applying the following test methods from the United States Environmental Protection Agency SW-846, Test Methods for Evaluating Solid Waste: (1) Method 3050, Acid Digestion of Sediments, Sludges, and Soils; and (2) Method 6010, Inductively Coupled Plasma Atomic Emission Spectroscopy, or Method 7000, Atomic Absorption Methods. Lead concentrations should be reported in micrograms per gram (micrograms/gm); or (3) an alternate method approved in advance by the executive director or a designated representative of the Texas Air Control Board (TACB). (b) Results of the test(s) required in subsection (a) of this section must be available to the TACB staff or staff from governmental entities having jurisdiction at
the site for the duration of the abrasive blasting project. The results must include the name of the testing facility and a person responsible for the accuracy of the test results. (c) Successive coatings need not be retested following initial testing, provided the owner or operator of the water storage tank can furnish verifiable documentation that the lead level of the post-testing coatings is less than 1.0% (10,000 micrograms/gm) lead by weight.
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