ARSD 44:90:07:08
44 : 90 : 07 : 08 . Extraction using inherently hazardous substances. Before performing extraction using an inherently hazardous substance, the establishment must have prior physical inspection and written approval by an engineer licensed pursuant to SDCL chapter 36-18A that the establishment’s storage, preparation, electrical, gas monitoring, fire suppression, and exhaust systems are adequate for the extraction methods and substances used.
(5) Pentane.
The use of any inherently hazardous substance other than butane, propane, acetone, heptane, or pentane requires written prior approval of the department, upon documentation of the safety and efficacy of the selected method. All flammable gas must be stored and handled in accordance with all applicable safety standards contained in local ordinance, SDCL chapter 11-10, article 61:15, and chapter 20:44:22.
Any extraction method using inherently hazardous substances must be listed in the operating procedures on file with the department and use a substance of ninety-nine percent or greater purity. The resulting extract must not exceed residual limits for the substance established by the department as part of testing requirements.
The following solvents may be used in approved inherently hazardous extraction:
Source: 48 SDR 40, effective October 5, 2021; 49 SDR 47, effective November 22, 2022.
General Authority: SDCL 34-20G-72 (5)(e)(h).
Law Implemented: SDCL 34-20G-72 (5).
Prior versions effective: 2021-10-05.