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"'Section 903.1.3. Metallic piping shall not be used underground in those <br />areas underlain by younger bay mud (see map published by Redwood City <br />Building Division for approximate locations)." <br /> <br /> "Section 9.86. Section 1101.3.1 added: Section 1101.3.1 is hereby <br />added to the Plumbing Code to read as follows: <br /> <br /> "Section 1101.3.1. Rainwater piping located underground within a <br />building shall be of service weight cast iron soil pipe, Type DWV copper tube, <br />Schedule 40 ABS DWV or Schedule 40 PVC, DWV, extra strength vitrified clay <br />pipe, or other approved materials. Metallic piping shall not be used underground <br />in those areas underlain by younger bay mud (see map published by Redwood <br />City Building Division for approximate locations). <br /> <br /> "Section 9.87. Section 1210.1.1 added: Section 1210.1.1 is hereby <br />added to the Plumbing Code to read as follows: <br /> <br /> "'Section 1210.1.1. Metallic piping shall not be used underground in <br />those areas underlain by younger bay mud (see map published by Redwood City <br />Building Division for approximate locations).'" <br /> <br /> "Sections 9.88 - 9.109. Reserved." <br /> <br /> SECTION 6. Article VIII of Chapter 9 of the Redwood City Code is hereby <br /> added to read as follows: <br /> <br />ORD-O01 17 <br />FXS:jthrnkc <br />6/1/99 <br /> <br /> 2165 <br /> <br /> <br />