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  2. Marnell Corrao Associates - Wikipedia

    en.wikipedia.org/wiki/Marnell_Corrao_Associates

    Received approval on October 17, 2005, for a new project on Las Vegas Boulevard in Henderson. The project, named M Resort, is located on a 79-acre (32 ha) site. The casino opened on March 1, 2009. Marnell Companies worked with Square One and construction company Osage Manhatta Builders on the Osage Casino Hotel-Ponca City, Oklahoma in 2012-13. [5]

  3. Clark County Regional Flood Control District - Wikipedia

    en.wikipedia.org/wiki/Clark_County_Regional...

    Voters in 1986 approved a quarter cent sales tax to fund construction of regional flood control facilities. The first project began in 1988. As of June 2013, a total of $1.7 bill was spent on flood control, including construction of 90 detention basins and approximately 581 miles of channels and underground storm drains.

  4. Reduced pressure zone device - Wikipedia

    en.wikipedia.org/wiki/Reduced_pressure_zone_device

    A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle (RP), reduced pressure principle backflow prevention devices, [1] [2] reduced pressure zone assemblies (RPZA), [3] or reduced pressure principle ...

  5. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.

  6. Backflow - Wikipedia

    en.wikipedia.org/wiki/Backflow

    Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. [1] It can be a serious health risk for the contamination of potable water supplies with foul water . In the most obvious case, a toilet flush cistern and its water supply must be isolated from the toilet bowl.

  7. Backwater valve - Wikipedia

    en.wikipedia.org/wiki/Backwater_valve

    A backwater valve is a backflow prevention device used to prevent outbound water through a dwelling's drain pipes from re-entering -- "back flowing"—into a home. The valve contains a flap that allows water to exit the home, but closes to prevent the back flow into the home.

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