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ORDINANCE NO. NS- 1668 PAGE THREE as follows:' Sec. 914(f). Spark Arrestors. Ail chimneys, except chimneys serving appliances using only gas or oil for com- bustion, shall terminate in a substantially constructed spark arrestor having an area not less than four times the net free area of the chimney it serves. Openings shall not permit the passage of spheres having a diameter larger than 1/2 inch nor block the passage of spheres having a diameter of less than 3/8 inch. Spark arrestors shall be adequately supported and secured. SECTION 5: Pursuant to the provisions and authority of Sections 17958.5 and 17958.7 of the Health and Safety Code of the State of California, the City Council of the City of Santa Ana finds, determines and declares that the above- described amendment to Sections 1704, 3203(f) and 3703(f) of the Uniform Building Code, 1979 Edition, and Section 914(f) of the Uniform Mechanical Code, 1979 Edition, are reasonably necessary for the health, safety and general welfare of the residents of the City of Santa Ana due to the following climat- ic, geographical and topographical conditions: 1. The City of Santa Ana is geographically located in an area which is subject to periodic extremely high veloci- ty wind conditions; said condition being further accentuated by the topographical features of the hill and canyon areas lo- cated easterly of the city; 2. The City of Santa Ana is subject to seasonably high temperatures and dry atmospheric conditions which often occur during times of the high velocity winds as hereinabove described; and 3. Due to the climatic, geographical and topograph- ical conditions hereinabove described, the City of Santa Ana is susceptible to fires which are of particular danger during periods of high winds when fires tend to spread across building roofs where such roofs are not made of noncombustible or fire- retardant construction. SECTION 6: That the City's Director of Planning and Development Seryices be directed to file a copy of this ordinance with ~he Department of Housing and Community Development Of the State of California. SECTION 7: If any section, subsection, sentence, clause, phrase or portion of this ordinance is for any reason held to be invalid or unconstitutional by the de- cision of any court of competent jurisdiction, such decision shall not affect the validity of the remaining portions of this ordinance. The City Council of the City of Santa Ana