and listed chemical should be considered (see Application Note 12 in the Commentary to §2D1.1).
4. Cases Involving Multiple Chemicals.—
(A) Determining the Base Offense Level for Two or More Chemicals.—Except as provided in subdivision (B), if the offense involves two or more chemicals, use the quantity of the single chemical that results in the greatest offense level, regardless of whether the chemicals are set forth in different tables or in different categories (i.e., list I or list II) under this guideline.
Example: The defendant was in possession of five kilograms of ephedrine and 300 grams of hydriodic acid. Ephedrine and hydriodic acid typically are used together in the same manufacturing process to manufacture methamphetamine. The base offense level for each chemical is calculated separately and the chemical with the higher base offense level is used. Five kilograms of ephedrine result in a base offense level of level 38; 300 grams of hydriodic acid result in a base offense level of level 26. In this case, the base offense level would be level 38.
(B) Determining the Base Offense Level for Offenses involving Ephedrine, Pseudoephedrine, or Phenylpropanolamine.—If the offense involves two or more chemicals each of which is set forth in the Ephedrine, Pseudoephedrine, and Phenylpropanolamine Quantity Table, (i) aggregate the quantities of all such chemicals, and (ii) determine the base offense level corresponding to the aggregate quantity.
Example: The defendant was in possession of 80 grams of ephedrine and 50 grams of phenylpropanolamine, an aggregate quantity of 130 grams of such chemicals. The base offense level corresponding to that aggregate quantity is level 32.
(C) Upward Departure.—In a case involving two or more chemicals used to manufacture different controlled substances, or to manufacture one controlled substance by different manufacturing processes, an upward departure may be warranted if the offense level does not adequately address the seriousness of the offense.
5. Convictions under 21 U.S.C. §§ 841(c)(2) and (f)(1), and 960(d)(2), (d)(3), and (d)(4) do not require that the defendant have knowledge or an actual belief that the listed chemical was to be used to manufacture a controlled substance unlawfully. In a case in which the defendant possessed or distributed the listed chemical without such knowledge or belief, a 3-level reduction is provided to reflect that the defendant is less culpable than one who possessed or distributed listed chemicals knowing or believing that they would be used to manufacture a controlled substance unlawfully.
6. Subsection (b)(3) applies if the conduct for which the defendant is accountable under §1B1.3 (Relevant Conduct) involved any discharge, emission, release, transportation, treatment, storage, or disposal violation covered by the Resource Conservation and Recovery Act, 42 U.S.C. § 6928(d), the Federal Water Pollution Control Act, 33 U.S.C. § 1319(c), or the Comprehensive Environmental Response, Compensation, and Liability Act, 42 U.S.C. §§ 5124, 9603(b). In some cases, the enhancement under subsection (b)(3) may not adequately account for the seriousness of the environmental harm or other threat to public health or safety (including the health or safety of law enforcement and cleanup personnel). In such cases, an