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1992-3
<br />
<br />AN ORDINANCE TO AMEND SECTIONS 38-166. 38-169, 38-170, 38-172,
<br />38-174 (c) AND (d), 38-176, 38-177 (b), 38-179, 38-180,
<br />38-183, 38-184 (a), (b), AND (d), 38-185, 38-186 (a), (b) AND
<br />(e) OF THE CODE OF THE CITY OF PORTSMOUTH, VIRGINIA, 1988,
<br />RELATING TO WATER BACKFLOW PREVENTION AND CROSS-CONNECTION
<br />CONTROL.
<br />
<br /> BE IT ORDAINED by the Council of the City of Portsmouth,
<br />Virginia:
<br />
<br /> 1. That Sections 38-166, 38-169, 38-170, 38-172,
<br />38-174 (c) and (d), 38-176, 38-177 (b), 38-179, 38-180,
<br />38-183, 38-184 (a), (b), and (d), 38-185, 38-186 (a), (b),
<br />(e) of the Code of the City of Portsmouth, Virginia, 1988,
<br />amended to read as follows:
<br />
<br />and
<br />be
<br />
<br />Section 38-166. General.
<br />
<br /> (a) The purpose of this article shall be to establish a
<br />cross connection control and backflow prevention program as
<br />required by the Virginia Department of Health, Waterworks
<br />Regulations Article 3.
<br />
<br /> (b) Definitions. The following words, terms and
<br />phrases, when used in this article, shall have the meanings
<br />ascribed to them in this section, except where the context
<br />clearly indicates a different meaning:
<br />
<br /> "Air gap" means the unobstructed distance through a free
<br />atmosphere between the lowest perimeter of a water outlet and
<br />the flood-level rim of any receptacle. This distance will be
<br />minimum of two (2) times the diameter of the outlet. (In case
<br />of near-walls, this distance will be three (3) times the
<br />diameter of the outlet.)
<br />
<br /> "Approved" the term as herein used in reference t~
<br />air-gap separation, a double check valve assembly, a reduced
<br />pressure principle backflow prevention assembly or other
<br />backflow prevention devices or methods shall mean an approval
<br />by the director.
<br />
<br /> "Auxiliary supply" means any water source or system other
<br />than the public water supply that may be available.
<br />
<br /> "Backflow" means the reversal of flow from its intended
<br />direction as result of backsiphonage or backpressure.
<br />
<br /> "Contamination" means
<br />of microorganisms, wastes,
<br />or gases.
<br />
<br />any introduction into potable .water
<br />wastewater, undesirable chemicals
<br />
<br />
<br />
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