OCal 5034-2 Page 1 of 2 List of Materials Prohibited for Use in OCal Cannabis Production This list is provided for reference purposes and is not intended to be comprehensive. In addition to the materials identified below, any synthetic material that is not included at 7 CFR § 205.601 of the National List of Allowed and Prohibited Substances (National List) is prohibited for use in OCal cannabis production. The materials listed below are specifically prohibited on the National List at 7 CFR § 205.602, have been reviewed by a Federal agency and determined to be prohibited, or are no longer allowed for use in organic (and therefore OCal) crop production. Find more classification information in OCal 5033 Classification of Unique Materials, OCal 5033- 1 Decision Tree for Classification of Materials, OCal 5033-2 Definitions of Terms Used for Classification, OCal 5034 Classification of Materials for OCal Cannabis Production, and OCal 5034-1 List of Materials for Use in OCal Production. 1,4-Dimethylnaphthalene Dextrin 3-Decen-2-one Ethylene Glycol 6-Benzyladenine Exhaust Gas (Carbon Monoxide) Acetylated Lanolin Alcohol Glycerin Oleate Acrylic Acid Methyl Ester, Polymer with Glyphosate Acrylonitrile and 1,3-Butadiene Humic acid, treated with hydrogen peroxide Ammonium Nonanoate, except as (oxidized lignite) provided on in 7 CFR § 205.601 Indole-3-butyric Acid Arsenic Lead Salts Ash from Manure Burning Leather Meal Avermectin Lime Mud Basic Slag, agricultural slag Magnesium Dihydrogen Phosphite Biosolids Monohydrate Calcium Carbide Manganous Oxide, except as provided on in Calcium Oxide, fertilizer use 7 CFR § 205.601(j) Calcium Sulfate (synthetic form) Methyl Bromide Captan Methyl Laurate Chitosan Monocalcium Phosphate Copper Chromium Arsenate Nickel Salts, Synthetic Coumarone – indene resin Niter Cryolite Pelargonic Acid OCal 5034-2 List of Materials Prohibited for Use in OCal Cannabis Production, April 6, 2020 23, 2021 OCal 5034-2 Page 2 of 2 Pentaerythritol Monostearate Struvite (Magnesium Ammonium Pentaerythritol Tetrastearate Phosphate) Piperonyl Butoxide Strychnine Propylene glycol monolaurate (PGML) Sulfuric Acid, except as provided on in 7 Polyoxin D Zinc Salt CFR §205.601(j) Potassium Sulfate (synthetic form) Tall Oil Propane, for underground rodent control Tetracycline Sewage Sludge Tetrahydrofufuryl Alcohol Sodium Chlorate Thiram Sodium Fluoaluminate Tobacco Dust (Nicotine Sulfate) Sodium Fluoride Triple Phosphate Sodium Lauryl Sulfate (SLS) Urea Sodium Propionate Streptomycin Note: Substances classified as EPA List 4, Inerts of Minimal Concern, may be permitted in pesticide products under section 7 CFR 205.601 (m). Certified operations should receive approval from their certifying agents before using pesticide products that contain these substances. OCal 5034-2 List of Materials Prohibited for Use in OCal Cannabis Production, April 6, 2020 23, 2021 .