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HomeMy WebLinkAboutReso 2013-060RESOLUTION NO. 2013-060 RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CHULA VISTA ADOPTING THE CHULA VISTA CLOTHES WASHER GRAYWATER PRE-PLUMBING AND STUB-OUT FOR NEW RESIDENTIAL CONSTRUCTION WHEREAS, on May 3, 2011 City Council approved Resolution 2011-076 in which City Council adopted the Climate Adaptation Strategies and approved their implementation; and WHEREAS, the Implementation Plan for Strategy #4, Local Water Supply and Reuse, proposed adopting new regulations to incorporate clothes washer graywater plumbing stub-out in new residential development; and WHEREAS, staff is presenting to Council an ordinance amending Chapter 15.28 of the Municipal Code to require all new detached single-family dwellings and duplexes to include a clothes washer graywater pre-plumbing and outside stub-out; and WHEREAS, the installation of a stub-out at time of construction greatly facilitates the use of graywater in residences; and WHEREAS, in order to facilitate compliance with the requirements and establish consistency in the installation and inspection of these requirements, staff developed technical installation requirements, Chula Vista Clothes Washer Graywater Pre-Plumbing and Stub-Out for New Residential Construction (attached as Exhibit "A"); and WHEREAS, the Boazd of Appeals and Advisors, at their January 14, 2013 meeting recommended that City Council adopt the installation requirements. NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Chula Vista that it hereby adopts the Chula Vista Clothes Washer Graywater Pre-Plumbing and Stub-Out for New Residential Construction, attached as Exhibit "A," as the installation requirements in the City of Chula V ista. Presented by Approved as to form by Gary albe , P. ., AICP en R. ogins ~~ Assistant C~ y Manager/Director of ~t Attorney \ j Development Services ~-/ Resolution No. 2013-060 Page No. 2 PASSED, APPROVED, and ADOPTED by the City Council of the City of Chula Vista, California, this 23rd day of Apri12013 by the following vote: AYES: Councilmembers: Aguilar, Bensoussan, Ramirez, Salas and Cox NAYS: Councilmembers: None ABSENT: Councilmembers: None Cheryl Cox, M or ATTEST: Donna R. Norris, CMC, City Clerk STATE OF CALIFORNIA COUNTY OF SAN DIEGO CITY OF CHULA VISTA I, Donna R. Norris, City Clerk of Chula Vista, California, do hereby certify that the foregoing Resolution No. 2013-060 was duly passed, approved, and adopted by the City Council at a regular meeting of the Chula Vista City Council held on the 23rd day of Apri12013. Executed this 23rd day of Apri12013. -L i 1C b/Y fl~lLf/U Donna R. Norris, CMC, City Clerk Resolution No. 2013-060 Page No. 3 EXHIBIT A ~V // ~~ Clothes Washer Graywater Pre-Plumbing and ~ ~tvls~ Stub-Out for New Residential Construction These requirements, or an equivalent alternate method and/or material approved by the Building Official, are applicable in all new detached single family dwellings and duplexes. There aze two basic approaches to installing the pre-plumbing and stub-out for a future clothes washer graywater system in newly constructed dwelling units. Both methods are installed adjacent to the regular clothes washer standpipe to allow the clothes washer to drain into the regulaz sewer standpipe (leading to the building sewer) or be diverted to a gaywater stub-out on the exterior of the building. The following are the two methods: - Configuration #1 involves a separate graywater standpipe installed adjacent io the regular clothes washer standpipe. This can be done by installing an additional outlet box dedicated for the graywater standpipe. The following installation requirements apply: The standpipe shall be vented (an air admittance valve is acceptable) and trapped, and all plumbing materials shall be 2-inch in size. The standpipe shall have a 2-inch overflow pipe leading downward to the regular washer sewer standpipe. • The graywater standpipe outlet box shall be as close as possible to the sewer standpipe so that the flexible washing machine wastewater dischazge pipe can be manually moved between the two outlet box drainage pipes to either flow into the sewer or to a future graywa[er system attached to the stub-out. The plumbing system must Dave a minimum `/." per foot slope towards the exterior stub- out. Configuration #2 uses a 3-Way Diver[er Valve connected to the end of the flexible washing machine wastewater discharge pipe. The valve position directs the graywater to either the regulaz standpipe leading to the sewer or to the grayv.~ater sub-out. The following installation requirements apply: • The diverter valve and all additional phunbing materials shall be minimum t-inch in size or greater. • The graywater stub-out shall have a vacuum breaker installed at [he highest point in the connection, either inside or outside. • The diverter valve must be accessible and securely fastened to the interior wall at the clothes washer. The followinG General requirements aonly to both configurations: • Permanent labeling. o Regular standpipe leading to the building sewer and diverter valve in position to feed into the sewer standpipe must be permanently labeled "Building Sewer." rage ~ nf'? Resolution No. 2013-060 Page No. 4 EXHIBIT A o Standpipe dedicazed to feed the graywater stub-out and diverter valve in the position to feed the graywazer stub-out must be permanently labeled "Graywater to Landscape." o Exterior graywaier stub-outs must be permanently labeled "GRAYWATER STUB-OUT. CAUTION- UNSAFE WATER DO NOT DRINK" o Sections of the graywater piping 5-feet or longer must be labeled "CAUTION: NON-POTABLE V/ATER, DO NOT DRINK." An operation and maintenance manual shall be provided. Directions shall indicate the manual is to remain with the building throughout the life of the system and indicate thaz upon change of ownership or occupancy, the new owner or tenant shall be notified the structure contains a graywa[er stub-out or system. • Stub-out o Must extend a minimum of 3-inches outward past the exterior wall. o Must have a rubber cap with a stainless steel tightening draw band to keep it closed when not conducting graywater. - o Exterior stub-outs should measure between 18-inches and 48-inches above finished exterior grade. The higher the better [o assist with the gravity flow of the system but not to exceed 48" above finished exterior grade. o The stub-out should be as close to the largest area of landscaping as possible. • All exterior materials shall be protected firom UV rays by a latex paint, except for the vacuum breaker device. • All work and mazetials used shall conform to the California Plumbing Code in effect at the time of installation. • Both ends of the graywater stub-out plumbing need to be identified on the plans. • The graywater plumbing and stub-out is required wherever the clothes washer outlet box is installed in the building. Pale?oft