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Article V. Cross Connection Control
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Prior legislation: Resos. 320, 417, 511, 561; Resos. 417, 511, 561; Resos. 511 and 561; Res. 561.

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(1) Unless a different meaning plainly is required, the definitions found in WAC 246-290-010 now in effect or as subsequently amended or reenacted are hereby adopted by reference as if set forth in full herein.

(2) “CCS” is defined as the cross connection control specialists of the Silver Lake Water and Sewer District or a delegated representative.

(3) “Owner” is defined as any person or entity with interest in the title to the property and/or a customer of the district.

(4) Acronyms for Backflow Preventers.

“AG” means air gap.

“Assembly” means an entire backflow prevention unit. It includes the inlet and outlet shutoffs, as well as test cocks for inspection.

“AVB” means atmospheric vacuum breaker.

“DCVA” means double check valve assembly.

“PVBA” means pressure vacuum breaker assembly.

“RPBA” means reduced pressure backflow assembly.

“RPDA” means reduced pressure detector assembly (fire systems).

“SVBA” means spill resistant vacuum breaker assembly.

(5) Other Definitions.

“AHJ” means authority having jurisdiction.

“BAT” means backflow assembly tester.

“Common supply fire service line” mean a combination domestic and fire service line that is branched after the water meter. One branch supplies a separate fire protection system, and one branch supplies the domestic plumbing system, and the two branches do not connect or intermingle.

“Dedicated fire service line” means a separate dedicated water service line that is used to supply only an internal fire protection system with no connection to the domestic plumbing system.

“(The) district” means the Silver Lake Water and Sewer District.

“Flow through fire service line” means a combination domestic and fire service line without separate branches for fire and domestic systems, and is interconnected with interior plumbing fixtures to ensure consistent water flow in the network.

“RCW” means the Revised Code of Washington.

“Single-family residential” means attached or detached single-family residential structures, including duplexes and townhomes, constructed under the current International Residential Code with independent interior plumbing systems.

“TI” means tenant improvement.

“UPC” means the Uniform Plumbing Code.

“USC/FCCCHR” means the University of Southern California Foundation for Cross Connection Control and Hydraulic Research.

“WAC” means the Washington Administrative Code.

“WSDOH” means the Washington State Department of Health. [Res. 835 § 3 (Exh. 3), 2022; Res. 735 § 1, 2017.]