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first obtaining a separate permit to do such work from the authority having jurisdiction for each separate building or structure. SECTION 20: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-340 amending California Plumbing Code section 314.3 is necessary because the topography of the City of Santa Ana is near sea level. This is problematic for long distance drainage as proper drainage requires a minimum of a one percent (1 %) downhill grade. The amendment of section 8-340 provides soil compaction guidelines so that installation of the drain line is well supported and prevents the failure or sagging of the drain lines due to the short range of elevation between the topographical surface of the City and the topographic surface level and location of the sewage treatment plant that the drains must reach. As a result, a certification by a registered soils engineer is necessary because there must be specific guidelines for compaction or there is a potential risk of the system's failure to drain properly. SECTION 21: That section of 8-340 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-340. Piping in the ground (California Plumbing Code Section 314.3). Section 314.3 of the Plumbing Code is amended to read as follows: 314.3. Piping in the ground shall be laid on a firm bed for its entire length. Building drains, sewers and storm drain piping systems in the ground, and designed and approved at less than one (1) percent grade, shall be laid on a continuous firm bed, certified by a registered soils engineer as having a compaction level of not less than ninety (90) percent density. Where support is otherwise provided, it shall be acceptable to the Authority Having Jurisdiction. SECTION 22: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-341 amending California Plumbing Code section 314.7 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 the highest seismic risk zone in the 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 23: That section 8-341 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-341. Horizontal piping (California Plumbing Code Section 314.7). Section 314.7 of the Plumbing Code is amended to read as follows: Ordinance No. NS-2760 Page 10 of 36