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<br /> FXS:dft \ )/92 (009/11) <br /> 9/14/92R <br />bay mud (see map published by Redwood City Building <br />Division for approximate locations). All materials <br />used in the water supply system, except valves and <br />similar devices shall be of a like material, except <br />where otherwise approved by the Administrative <br />Authority. '" <br />"Section 9.85. Section 1103(a) of the Plumbing Code is <br />hereby amended to read as follows: <br /> "'Section 1103. ( a) The building sewer, <br />beginning two (2) feet ( .6m) from any building or <br />structure, shall be of such materials as may be <br />approved by the Administrative Authority under the <br />approval procedures set forth in Chapter 2 of this <br />Code. Metallic piping shall not be used underground in <br />those areas underlain by younger bay mud (see map <br />published by Redwood City Building Division for <br />approximate locations). ' " <br />"Section 9.86. Section 1212(a) of the Plumbing Code is <br />hereby amended to read as follows: <br /> "'Section 1212. (a) All pipe used for the <br />installation, extension, alteration, or repair of any <br />gas piping shall be standard weight wrought iron or <br />steel (galvanized or black) , yellow brass (containing <br />not more than seventy-five (75 ) percent copper), or <br />internally tinned or equivalently treated copper of <br />iron pipe size. Approved PVC or PE pipe may be used in <br />exterior buried piping systems. Metallic piping shall <br /> 11 <br />