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20.24.240 (1) Responsible persons shall cause all safety control systems at a facility to be tested not less frequently than annually and maintained in good working condition. (2) Persons qualified to perform the maintenance and tests shall perform maintenance and testing. (3) Maintenance records and certifica- tions shall be available to the Fire Chief upon inspection or request. (o) Flow Limiting Orifices and Devices for D.O.T. Poison A. Flow Limiting Orifices and Devices for D.O.T. Poison A. Containers for those materials classified as D.O.T. Poison A, regardless of the amount of D.O.T. Poison A, shall be equipped with a flow restricting orifice, when available from the supplier of the D.O.T. Poison A. If a flow restricting orifice is not available, the container shall be used with a flow limiting device. (p) Fire Extinguishing Systems. (1) Except as hereinafter provided, re- sponsible persons shall cause all interior and exterior use areas and interior storage areas and storage buildings to be protected by automat- ic sprinkler systems. (2) The design of the sprinkler systems shall be not less than that required under Uniform Building Code Stan- dard No. 9-1 for Extra Hazard Group 2 with a minimum design area of 3,000 square feet or Pleasanton Mu- nicipal Code section 20.24.130. Where the materials or storage ar- rangement require a higher level of sprinkler system protection in accor- dance with nationally recognized standards, the higher level of sprin- kler system protection shall be pro- vided. (3) If the chemical properties of the regulated materials are such that the materials will be incompatible with the use of a sprinkler system, the Fire Chief may require alternative forms of fire protection. DIVISION III CLASSIFICATION OF MATERIALS SEC 89.301 (a) General. Regulated materials shall be classified according to their Material Hazard Index ("MHI") value. (b) Class I Regulated Materials. Of the materials regulated by this article, Class I materials pose the greatest potential hazard. A regulated material which has an MHI value equal to or greater than five hundred thousand (500,000) or which is classified as D.O.T. Poison A, shall be classified as a Class I regulated material. (c) Class II Regulated Materials. A regu- lated material which has an MHI equal to or greater than ten thousand (10,000) but less than five hundred thousand (500,000) shall be classified as a Class II regulated material. (d) Class III Regulated Materials. A regulated material which has an MHI equal to or greater than four thousand nine hundred (4,900) but less than ten thousand (10,000) shall be classified as a Class III regulated material. (Pleasanton April 2003) '] 10-5(