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new wastewater line, measured vertically, and at least four feet away, measured <br />horizontally, from the replaced wastewater main or lateral. <br />A.3. Where a new potable waterline parallels a new wastewater line/force main, the wastewater <br />main or lateral shall be constructed of at least 150 psi pressure rated pipe. The new potable <br />waterline shall be located at least two feet above the wastewater main or lateral, measured <br />vertically, and at least four feet away, measured horizontally, from the wastewater main or <br />lateral.. <br />B. New Waterline Installation - Crossing Lines <br />B.l. Where a new potable waterline crosses an existing, non-pressure rated wastewater main or <br />Tateral, one segment of the waterline pipe shall be centered over the wastewater main or <br />lateral such that the joints of the waterline pipe are equidistant and at least nine feet <br />horizontally from the centerline of the wastewater main or lateral. The potable waterline <br />shall be at least two feet above the wastewater main or lateral. Whenever possible, the <br />crossing shall be centered between the joints of the wastewater main or lateral. If the <br />existing wastewater main or lateral is disturbed or shows signs of lealdng, it shall be <br />replaced for at least 9 feet in both directions (18 feet total) with at least 150 psi pressure <br />rated pipe. <br />B,2. Where a new potable waterline crosses an existing, pressure rated wastewater main or <br />lateral, one segment of the waterline pipe shall be centered over the wastewater main or <br />lateral such that the joints of the waterline pipe aze equidistant and at least nine feet <br />horizontally from the centerline of the wastewater main or lateral. The potable waterline <br />shall be at least six inches above the wastewater main or lateral. Whenever possible, the <br />crossing shall be centered between the joints of the wastewater main or lateral. If the <br />eacisting wastewater main or lateral shows signs of leaking, it shall be replaced for at least 9 <br />feet in both directions (18 feet total) with at least 150 psi pressure rate pipe. <br />B,3. Where a new potable waterline crosses a new, non-pressure rated wastewater main or lateral <br />and the standard pipe segment length of the wastewater main or lateral is at least 18 feet, one <br />segment of the waterline pipe shall be centered over the wastewater main or lateral such that <br />the joints of the waterline pipe are equidistant and at least nine feet horizontally from the <br />centerline of the wastewater main or lateral. The potable waterline shall be at least two feet <br />above the wastewater main or lateral. Whenever possible, the crossing shall be centered <br />between the joints of the wastewater main or lateral. The wastewater pipe shall have a <br />minimiun pipe stiffness of 115 psi at five percent deflection. The wastewater line shall be <br />embedded in cement stabilized sand (see clause B6 of this subpazagraph) for the totallength <br />of one pipe segment plus 12 inches beyond the joint on each end. <br />g,4. Where a new potable waterline crosses a new, non-pressure rated wastewater main or lateral <br />and a standard length of the wastewater pipe is less than 18 feet in length, the potable water <br />pipe segment shall be centered over the wastewater line. The materials and method of <br />installation shall conform with one of the following options: <br />87 <br />