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Section 314.7 of the Plumbing Code is amended to read as follows: 314.7 All gas piping, horizontal cast iron drain, waste and vent piping, and all other suspended horizontal piping two and one-half (2 ¼) inches and larger, shall be supported with approved rod and hangars. Exception: plumbers tape (perforated strap iron) may be used to support piping two (2) inches and smaller in type V (wood) construction only. Plumbers tape shall be galvanized and not less than three-fourths (3/4) inch wide and twenty two (22) gage. SECTION 28: The City Council of the City of Santa Ana hereby finds, determines and declares that amendment to section 8-342 is necessary to provide proper support for all horizontal piping, because of the significant potential for damage due to seismic activity. Cast iron is deemed unsafe in light of the seismic zone because of its weight and flexibility. Santa Ana is in close proximity to major active fault systems in Southern California. This area has been designated as seismic zone ~4, the highest seismic risk zone in a four-tiered hierarchy that rates the potential risk for seismic activity by geographical areas. As a result, a finding has been made that all suspended piping is to be braced to prevent movement or pipe failure. SECTION 29: That section 8-342 of the Santa Ana Municipal Code is hereby amended such that it reads as follows (new language in bold, deleted language in strikeout for tracking purposes only): Sec. 8-342. Suspended piping support (California Plumbing Code, Table 3-2). Table 3-2of the plumbing code is amended by adding footnote 2 to the requirements for horizontal piping of all materials specified in Table 3-2 of the California Plumbing Code. SECTION 30: The City Council of the City of Santa Ana hereby finds, determines and declares that amendment to section 8-400 is necessary because of the caustic chemical composition of the soil in the City of Santa Ana, pipes subject to contact with the soil are susceptible to corrosion potentially causing damage or failure. In addition, nonmetallic piping, and particularly plastic or other materials may leach caustic chemicals into the water supply. Moreover, since Santa Ana is located in a seismic zone fl4, plastic and other nonmetallic types of piping are susceptible to fracture, joint weakening and potential failure during seismic activity. SECTION 31: That section 8-400 of the Santa Ana Municipal Code is hereby amended such that it reads as follows (new language in bold, deleted language in strikeout for tracking purposes only): Sec. 8-400. Water piping in buildings (California Plumbing Code Section 609.3.1). Ordinance No. NS-2522 Page 16 of 47