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<br />Page 2 <br /> <br />the deposition of solids in such lines. Pipe specified for reclaimed water force mains <br />shall be of a type having an expected life at least as long as that of the lift station and <br />shall be suitable for the reclaimed water being pumped and operating pressure to which it <br />will be subjected. All pipe shall be identified in the technical specifications with <br />appropriate American Society of Testing and ~1ateriJ.ls, American National Standard <br />Institute, or American Water Works Association (A \VW A) standard numbers for both <br />quality control (dimensions, tolerance, and installation such as bedding or backfill). All <br />pipes and finings shall have a minimum working pressure rating of 150 pounds per <br />square inch. Final plans and specifications shall describe required pressure testing for all <br />installed reclaimed water force mains. Minimum test pressure shall be 1.5 times the <br />maximum design pressure. Allowable leakage rates shall be determined as described in ~ <br />317.2(d)(-l) of this title (relating to Pressure Sewer Systems). <br /> <br />(f) Gra\lty nO\\; reclaimed \\'ater lines shall meet the requirements of 9 317.2(a) of this <br />title (relating to General Requirement) and ~ 317.2(c) of this title (relating to High <br />Velocit), Protection). The designer shall consider methods to prevent high velocity SCour <br />or maintain line fluid velocity to mitigate the effects of the deposition of solids in the <br />gravity conveyance. <br /> <br />(g) All exposed piping and piping within a building shall be either purple pipe or painted <br />purple. All buried piping installed after the effective date of these rules shall be one of <br />the following: manufactured in purple, painted purple, taped with purple metallic tape, or <br />bagged in purple. All exposed piping should be stenciled in white with a warning reading <br />"NON-POTABLE WATER." All exposed or buried reclaimed water piping constructed <br />at a wastewater treatment facility is exempt from the color coding requirements of this <br />section. <br /> <br />(h) \Vhen applicable, in accordance with S 317.1 (a)-(3)( 4) of this title, (relating to <br />General Provisions), the design of distribution systems which ",ill convey reclaimed <br />water to a user shall be submitted to the executive director and must receive an approval. <br />The design of the distribution systems must meet the requirements of Chapter 317 of this <br />title (relating to Design Criteria for Sewerage Systems). \Vhere a municipality is the plan <br />review authority for certain sewer systems which transport primarily domestic waste, in <br />accordance with 9 317.1(a)(5) of this title, in lieu of the commission, design subminal <br />will not be subject to subminal to the commission and instead must be approved by the <br />municipality. Materials shall be submitted for approval by the executive director in <br />accordaIKe with the Texas Engineering Practice Act (Article 3271a, Vernon's Annotated <br />Texas Statutes). <br /> <br />(i) All ground level and elevated storage tanks shall be designed, installed, and <br />constructed in accordance \vith current A V';W A standards with reference to materials to <br />be used and construction practices to be followed, except for health-based standards <br />strictly related to potable water storage and contact practices, v.here appropriately less <br />