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Ordinance No. 2197 Exhibit B Page 17 20.24.110 CFC Chapter 2 Definitions amended — Hazardous Materials. The definition of Hazardous Materials is amended as follows: HAZARDOUS MATERIALS. Those chemicals or substances which are physical hazards or health hazards as defined and classified in this chapter and/or are compressed gases, whether the materials are in usable or waste condition. 20.24.120 CFC Chapter 2 Definitions amended — Health Hazard. The definition of Health Hazard is amended as follows: HEALTH HAZARD. A classification of chemical for which there is statistically significant evidence that acute or chronic health effects are capable of occurring in exposed persons. The term "health hazard" includes chemicals that are moderately toxic, toxic, highly toxic, or corrosive. 20.24.130 CFC Chapter 2 Definitions added — Maximum Threshold Quantity The definition of Maximum Threshold Quantity is added as follows: MAXIMUM THRESHOLD QUANTITY. The following formula shall be used to calculate the maximum threshold quantity for toxic, highly toxic, and moderately toxic gases: Max TQ (lbs) = LC50 (ppm) x 2 lb. For gas mixtures containing one or more toxic, highly toxic or moderately toxic components, the LC50 shall be calculated using CGA Standards P-20 and P-23. 20.24.140 CFC Chapter 2 Definitions added — Moderately Toxic Gas The definition of Moderately Toxic Gas is added as follows: MODERATELY TOXIC GAS. A chemical or substance that has a medial lethal concentration (LC50) in air of more than 2,000 parts per million but not more than 5,000 parts per million by volume of gas or vapor, when administered by continuous inhalation for an hour, or less if death occurs within one hour, to albino rats weighing between 200 and 300 grams each. 20.24.150 CFC Section 605.18 added — Immersion Heaters. Section 605.18 is added to read: 605.18 Immersion Heaters. All electrical immersion heaters used in dip tanks, sinks, vats and similar operations shall be provided with approved over-temperature controls and low liquid level electrical disconnects. Manual reset of required protection devices shall be provided. 20.24.160 CFC Section 903.2 amended —Automatic Sprinkler Systems 903.2 is deleted and replaced with the following: 903.2 Where required. 1. Automatic fire extinguishing systems shall be provided in all new buildings and structures, including any detached or attached structure added to a parcel of land already containing automatic extinguishing system protected buildings. Exception: a. Detached U Occupancies, other than trash enclosures, that do not exceed 400 square feet of floor area.