Painting or Coating for Steel Structure

Ali—LEED CS-2009 cites the version of SCAQMD-1113 that was in effect on January 1, 2004 (http://www.usgbc.org/sites/default/files/SCAQMD%20Rule%201113%207-9-04.pdf). Your post mentioned the category “Solvent Based IM,” which does not appear in the 2004 rule. This tells me that you are looking at a newer version of the rule that does not apply to CS-2009. But to address your questions: . . Answer 1: All interior paints applied on-site must comply with the VOC limits required under IEQc4.2. If a coating system includes several coats and different coating types, all layers that are applied on-site must comply. . . Answer 2: If the either product meets the Green Seal GS-11 definitions for flat or non-flat paints, use the GS-11 VOC limits (50 or 150g/L). Likewise, if either product has anti-rust properties, use the GC-03 VOC limit for Anti-Corrosive (250g/L). Be aware that you can also use the VOC limits set by California Air Resources Board 2007, Suggested Control Measure for Architectural Coatings (CARB-SCM-2007) (See http://www.usgbc.org/leed-interpretations?keys=10295 & http://www.usgbc.org/sites/default/files/CARB%202007%20SCM%20-%20Final%20approved%20version.pdf ). The coating categories defined in this standard fit the paint types more closely: . . 1. The fireproof paint is a “Fire-Resistive Coating” (350g/L) if its fire-resistance has been tested according to ASTM-E119. . . 2. The topcoat would be a “Flat,” “Nonflat,” or “High-Gloss” (50, 100, or 150g/L) depending on its sheen. (It may not qualify as a “Rust-Preventative Coating” because the CARB definition requires such coatings to be applied direct-to-metal without a primer.) If the coating category that you need is not available from the drop-down menu on the LEED-Online form, select the “Other” category. If you pick "Other," the “Product Type” & "VOC Allowable" fields will allow you to type in appropriate category & limit.