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See Chapter 5 for limitations on environmental air systems exhaust ducts extending into or through ducts or plenums. Exhaust ducts under positive pressure and venting systems shall not extend into or pass through ducts or plenums. For appliance vents and chimneys, see Chapter 8. EXCEPTION: Supply air duct, on the discharge side of an evaporative cooler, shall be conducted through rigid metal ducts constructed as set forth in the ANSUSMACNA 006-2006 HVAC Duct Construction Standards - Metal and Flexible, or another approved duct construction standard, and unless prohibited by structural conditions shall be graded in the direction of the supply outlet. Factory-made air ducts complying with U.L. Standard No. 181 shall be limited to installation in a vertical position only. Note: Vertical shall be defined as not more than forty-five (45) degrees from the vertical. SECTION 40: That section 8-667 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-667. Adoption by reference. There is adopted by the city that certain code known as the California Electrical Code 2010 Edition and the administrative provisions set forth herein, (hereinafter referred to in this article as the "Electrical Code" together with subsequent supplements, amendments, or editions, which shall become effective adopted, and incorporated by reference into this Code on the date specified by the state building standards commission, unless specifically adopted prior to that date, of which not less than one (1) copy of said Code has been and is now on file in the office of the clerk of the council of the city pursuant to Health and Safety Code Section 18942(d)(1) and are made available for public inspection. The electrical code is adopted and incorporated by reference as though fully s et forth at length herein as provided for in section 419 of the Charter of the city, except for the changes to the electrical code set forth in this chapter of this code that specifically amend the electrical code. Any previously enacted, unrepealed provision of this Code that amended a pre-2010 edition of the "Electrical Code" shall also be construed as amending the applicable provision of the 2010 or later edition of the electrical code. The electrical code as amended, together with all other provisions of this article, shall be known as the city electrical code. SECTION 41: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-815 amending California Electrical Code Section 110.5 is necessary because earthquakes are a common occurrence in the local area; that earthquakes may cause electrical connections and screws to loosen, causing arcing Ordinance No. NS-XXXX 11A-16 Page 16 of 43