Proposed Amended Rule 1106 – Marine and Pleasure Craft Coatings

Rule 1106 limits Volatile Organic Compound (VOC) emissions from marine and pleasure craft coatings formulated for use in the marine environment. The primary objective of Proposed Amended Rule (PAR) 1106 is to partially implement Control Measure CTS-01: Further Emission Reductions From Coatings, Solvents, Adhesives, and Lubricants, of the 2022 Air Quality Management Plan and to phase out the use of para-Chlorobenzotrifluoride (pCBtF) and tert-Butyl Acetate (t-BAc) in marine coatings, pleasure craft coatings, and marine structure coatings due to toxicity concerns. PAR 1106 proposes to: 1) prohibit the sale and use of coatings which contain pCBtF and/or t-BAc above trace levels within the South Coast AQMD with future effective prohibition dates that vary by coating category; 2) prohibit the sale and use of cyclic, branched, or linear, completely methylated siloxane above trace levels within the South Coast AQMD; 3) prohibit the possession of non-compliant marine coatings, pleasure craft coatings, and marine structure coatings upon rule adoption; 4) include alternative Product Weighted-Maximum Incremental Reactivity (PW-MIR) VOC content limits for pre-treatment wash primers and wood coatings; 5) include recordkeeping and labeling requirements; and 6) update rule structure, add new definitions, remove outdated rule provisions, and make other edits for consistency and clarity. Implementation of PAR 1106 is anticipated to benefit public health and ambient air quality by reducing VOC emissions by 23.9 pounds per day and reducing the risk of exposure to pCBtF and t-BAc among workers, nearby receptors, and the public through the phaseout of these toxic chemicals.