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SECTION 26: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-400 amending California Plumbing Code section 609.3.1 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 the highest seismic design categories, plastic and other nonmetallic types of piping are susceptible to fracture, joint weakening and potential failure during seismic activity. In addition, throughout the City of Santa Ana varied soil conditions exist, resulting in acidic soil conditions. It is determined that these additional safeguards against corrosion of the piping materials are necessary to maintain a properly functioning plumbing system. SECTION 27: That section 8-400 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-400. Water piping in buildings (California Plumbing Code Section 609.3.1). Section 609.3.1 of the Uniform Plumbing Code is amended to read as follows: 609.3.1 Nonmetallic and ferrous piping shall be prohibited; except that ferrous piping four (4) inches and larger may be used when protected against corrosion and installed in channels, tubes, or in a similar protective manner when approved by the Authority Having Jurisdiction. SECTION 28: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-401 amending California Plumbing Code section 610.8 using Table 6-6 is necessary because Santa Ana is located in an area of low rainfall and hot, dry summer climatic conditions. These conditions cause multiple water sources to be accessed concurrently by the same user. As a result, a 3/4" water supply pipe may be insufficient to supply the water demanded in any given instance. SECTION 29: That section 8-401 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-401. Building supply pipe (California Plumbing Code Section 610.8 using Table 6.6). Section 610.8 of the Plumbing Code is amended to read as follows: 690.8 Size of meter and building supply pipe using Table 6-6. The size of the meter and the building supply pipe shall be determined as follows: 1. Determine the available pressure at the water meter or other source of supply. 2. Subtract one-half (1/2) pound per square inch pressure (3.4 kPa) for each foot (305 mm) of difference in elevation between such source of supply Ordinance No. NS-XXXX 11 B ~ 12 Page 12 of 37