27.203—Calculating the screening threshold quantity by security issue.
        
        (a) General.
         In calculating whether a facility possesses a chemical of interest that meets the STQ for any security issue, a facility need not include chemicals of interest:
    
    
    
    
    
    
    
    
        
        (7) 
         In solid waste (including hazardous waste) regulated under the Resource Conservation and Recovery Act, 42 U.S.C. 6901
            et. seq., except for the waste described in  40 CFR 261.33 ;
    
    
        
        (8) 
         in naturally occurring hydrocarbon mixtures prior to entry of the mixture into a natural gas processing plant or a petroleum refining process unit. Naturally occurring hydrocarbon mixtures include condensate, crude oil, field gas, and produced water as defined in  40 CFR 68.3.
    
    
        
        (b) Release Chemicals—
        
        (1) Release-Toxic, Release-Flammable, and Release-Explosive Chemicals.
         Except as provided in paragraphs (b)(2) and (b)(3), in calculating whether a facility possesses an amount that meets the STQ for release chemicals of interest, the facility shall only include release chemicals of interest:
    
    
        
        (i) 
         In a vessel as defined in  40 CFR 68.3, in a underground storage facility, or stored in a magazine as defined in  27 CFR 555.11 ;
    
    
        
        (ii) 
         In transportation containers used for storage not incident to transportation, including transportation containers connected to equipment at a facility for loading or unloading and transportation containers detached from the motive power that delivered the container to the facility;
    
    
        
        (iii) 
         Present as process intermediates, by-products, or materials produced incidental to the production of a product if they exist at any given time;
    
    
    
        
        (v) 
         In gasoline, diesel, kerosene or jet fuel (including fuels that have flammability hazard ratings of 1, 2, 3, or 4, as determined by using National Fire Protection Association (NFPA) 704: Standard System for the Identification of the Hazards of Materials for Emergency Response [2007 ed.], which is incorporated by reference at 27.204(a)(2)) stored in aboveground tank farms, including tank farms that are part of pipeline systems;
    
    
        
        (2) 
         Release-Toxic, Release-Flammable, and Release-Explosive Chemicals. Except as provided in paragraph (c)(2)(i), in calculating whether a facility possesses an amount that meets the STQ for release-toxic, release-flammable, and release-explosive chemicals, a facility need not include release-toxic, release-flammable, or release-explosive chemicals of interest that a facility manufactures, processes or uses in a laboratory at the facility under the supervision of a technically qualified individual as defined in  40 CFR 720.3.
    
    
        
        (i) 
         This exemption does not apply to specialty chemical production; manufacture, processing, or use of substances in pilot plant scale operations; or activities, including research and development, involving chemicals of interest conducted outside the laboratory.
    
    
    
        
        (3) 
         Propane. In calculating whether a facility possesses an amount that meets the STQ for propane, a facility need not include propane in tanks of 10,000 pounds or less.
    
    
        
        (c) Theft and Diversion Chemicals.
         In calculating whether a facility possesses an amount of a theft/diversion chemical of interest that meets the STQ, the facility shall only include theft/diversion chemicals of interest in a transportation packaging, as defined in  49 CFR 171.8. Where a theft/diversion-Chemical Weapons (CW) chemical is designated by “CUM 100g,” a facility shall total the quantity of all such designated chemicals in its possession to determine whether the facility possesses theft/diversion-CW chemicals that meet or exceed the STQ of 100 grams.
    
    
        
        (d) Sabotage and Contamination Chemicals.
         A facility meets the STQ for a sabotage/contamination chemical of interest if it ships the chemical and is required to placard the shipment of that chemical pursuant to the provisions of subpart F of  49 CFR part 172.