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(3) <br /> <br />(4) <br /> <br />(5) <br /> <br />(6) <br /> <br />(7) <br /> <br />(8) <br /> <br />(9) <br /> <br />(lO) <br /> <br />"Equilibrium Vapor Concentration" ("EVC") means the state of a <br />regulated material at which vapor pressure has stabilized and is no longer <br />rising or falling. EVC Value of a regulated material determined by <br />multiplying vapor pressure ("VP") by 10, and dividing by atmospheric <br />pressure; as shown in the following equation: mm Hg; atmospheric <br />pressure is assumed to be 760 mm at sea level. <br /> <br />EVC (PPM) = Vapor Pressure x 106 Atmospheric Pressure 760 mmHg <br /> <br />Note: Vapor pressure for materials with a boiling point equal to or less <br />than 25 degrees C shall be 760 mm Hg; materials with a boiling point <br />greater than 25 degrees C shall use the actual vapor pressure for that <br />material at 25 degrees C. Atmospheric pressure is assumed to be 760 mm <br />at sea level. <br /> <br />"Facility" means any building, structure, installation, equipment, pipe, <br />container, site, area, appurtenant structure, or surrounding land area where <br />regulated materials are stored, used, dispensed, handled, placed or <br />otherwise have come to be located. <br /> <br />"Fire Code" means the Uniform Fire Code ("UFC"), as adopted or <br />modified by the Pleasanton Municipal Code. <br /> <br />"Gas" means an aeriform fluid, which is in a gaseous state at normal <br />temperature and pressure. <br /> <br />"Inert Construction Materials" means materials, which under reasonably <br />foreseeable conditions will not degrade or react upon contact with the <br />regulated materials to be contained. <br /> <br />"Level of Concern" ("LOC") means the maximum concentration of a <br />substance in air that will not cause serious health effects in the majority of <br />the population when exposed to the substance for a relatively short period <br />of time. For purposes of this article, the LOC is equal to 0.1 of the IDLH <br />value, as defined in Article 80 of the Fire Code, if the particular substance <br />has an established IDLH, or if not, an estimated LOC value based on acute <br />toxicity values of 0.O1 LC50, 0.1 LCLo, 0.001 LDSO, or 0.01 LDLo. <br /> <br />"Lethal Concentration" ("LC50") means the median lethal concentration <br />level, at which 50 percent of appropriate test animals die when exposed by <br />inhalation for a scientifically appropriate specified time period. <br /> <br />"Lethal Concentration Low" ("LCLo") means the lowest concentration of <br />a chemical at which some test animals died following inhalation exposure. <br /> 111 <br /> <br /> <br />