(a) Sample and test each batch of certified ethanol denaturant.

(1) Producers and importers of certified ethanol denaturant shall collect a representative sample from each batch of certified ethanol denaturant produced or imported and test each sample to determine its sulfur content for compliance with requirements under this subpart prior to the ethanol denaturant leaving the production or import facility, using the sampling and testing methods provided in this section or §§80.8 (sampling) and 80.47 (testing).

(2) The requirements of this section apply beginning January 1, 2017 or on the first day that an ethanol denaturant manufacturer designates a batch of ethanol denaturant as compliant with the requirements of §80.1611, whichever is earlier.

(b) Determination of certified ethanol denaturant sulfur content. Producers and importers of certified ethanol denaturant who are required to test each batch of certified ethanol denaturant they produce or import to determine its sulfur content pursuant to the requirements of §80.1611 shall use the testing methods specified in paragraph (c) of this section.

(c) Test method for measuring sulfur content of certified ethanol denaturant.

(1) For purposes of paragraph (b) of this section, producers and importers of certified ethanol denaturant shall use the method provided in §80.47 to measure the sulfur content of certified ethanol denaturant they produce or import. Alternative test methods may be used as approved by the Administrator.

(2) The sulfur content of each batch of ethanol denaturant shall be reported to the nearest ppm.