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CC 2015-11-24_12b Intro Ord_Water Efficient Landscape RequirementsMEMORANDUM TO: CITY COUNCIL FROM: TERESA McCLISH, COMMUNITY DEVELOPMENT DIRECTOR BY: n1;/I: KELLY HEFFERNON, ASSOCIATE PLANNER SUBJECT: CONSIDERATION OF AN ORDINANCE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE REGARDING WATER EFFICIENT LANDSCAPE REQUIREMENTS AND ADOPTING BY REFERENCE THE MODEL WATER EFFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA; DEVELOPMENT CODE AMENDMENT CASE NO. 15-002; LOCATION -CITYWIDE; APPLICANT -CITY OF ARROYO GRANDE DATE: NOVEMBER 24, 2015 RECOMMENDATION: The Planning Commission recommends the City Council: 1) introduce an Ordinance amending Chapter 16.84 of the Arroyo Grande Municipal Code adopting by reference the Model Water Efficient Landscape Ordinance of the State of California as contained in the California Code of Regulations, Title 23, Waters, Division 2.7, Model Water Efficient Landscape Ordinance, Sections 490 et. seq., including mandatory plumbing for greywater reuse capabilities for new residential and mixed-use development; and 2) schedule December 8, 2015 as the date for a public hearing to adopt the Ordinance pursuant to Government Code Section 50022.3. IMPACT ON FINANCIAL AND PERSONNEL RESOURCES: No fiscal impact is identified at this time. There will be additional staff time necessary to review water efficient landscape plans and materials to determine compliance with State regulations, create a tracking and reporting system, prepare reports and transmit annual reports to the State. The costs related to these additional activities are unknown. This item addresses the City's Critical Needs Action Plan measure to "implement recommendations to address the City's water needs through. a combination of conservation measures, potential recycling efforts and additional water supply sources that may become available." BACKGROUND: In 2006, the State Legislature adopted the "Water Conservation in Landscaping Act" (Assembly Bill 1881), requiring the Department of Water Resources (DWR) to update the State Model Water Efficient Landscape Ordinance (MWELO). The updated model Item 12.b. - Page 1 CITY COUNCIL CONSIDERATION OF AN ORDINANCE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE · REGARDING WATER EFFICIENT LANDSCAPE REQUIREMENTS AND ADOPTING BY REFERENCE THE MODEL WATER EFFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA; DEVELOPMENT CODE AMENDMENT CASE NO. 15-002; LOCATION -CITYWIDE; APPLICANT -CITY OF ARROYO GRANDE NOVEMBER 24, ·2015 . PAGE2 ordinance conta_ined several new landscape and irrigation design requirements aimed at reducing water consumption· and waste in landscape irrigation. All local land use agencies were required to adopt the model ordinance, or develop an ordinance that is at least as effective. On June 14, 2011, the City adopted a Water Efficient Landscape Ordinance that was determined to be as effective in achieving water conservation goals as the State's model, but was simpler to comprehend and implement, making it less onerous on property owners and developers and less expensive to implement (reduce costs for new homes and reduce the City's administrative costs as compared to the State's requirements). The Ordinance was incorporated into a new Chapter 16.84 of Title 16 of the City's Municipal Code. In April 2015, the Governor of California issued an executive order directing the DWR to update the State's Model Water Efficient Ordinance (CA MWELO) in order to address the current four (4) year drought and build resiliency for future droughts. In June 2015, the DWR invited comment on the new draft and held several public meetings. The draft, meeting notices, and additional information can be found at:· http://www.water.ca.gov/wateruseefficiency/docs/2015/EO B 29 15 MWELO Update 06 12 15%28VL %29 Public Draft.pdf. The DWR adopted the proposed CA MWELO in July 2015 and on September 15, 2015 the California Secretary of State ordered the regulations to be incorporated into Division 2, Title 23, California Code of Regulations to amend Chapter 2.7 Model Water Efficient Landscape Ordinance, Sections 490 through 495. Attachment 1 shows the regulations as submitted by the State for publication. On November 3, 2015, the . Planning Commission considered this . item and recommended that the City Council adopt the CA MWELO, including greywater plumbing requirements for new residential and mi.xed-use development. ANALYSIS OF ISSUES: State law requires all land-use agencies to adopt a water-efficient landscape ordinance that is at least as efficient as the CA MWELO prepared by DWR. DWR's model ordinance takes effect in those cities and counties that ·fail to adopt their own. Cities acting on their own are required to adopt their new MWELO by December 1, 2015. Because it is anticipated that future amendments will be made to the CA MWELO, adopting the State's MWELO, by reference, allows these amendments to occur without requiring amendments to the City's Municipal Code. This also allows the City to follow the State ,standards without having to add the CA MWELO in its entirety to the City's Municipal Code. Item 12.b. - Page 2 CITY COUNCIL CONSIDERATION 'OF AN ORDINANCE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE REGARDING WATER EFFICIENT LANDSCAPE REQUIREMENTS AND ADOPTING BY REFERENCE THE MODEL WATER EFFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA; DEVELOPMENT CODE AMENDMENT CASE NO. 15-002; LOCATION -CITYWIDE; APPLICANT -CITY OF ARROYO GRANDE NOVEMBER 24, 2015 PAGE3 The CA MWELO includes several provisions for new landscaping, including requirements for: • Landscape documentation submittals • -Grevwater Systems • Water efficient landscape worksheet • Stormwater and Rainwater submittals Retention • Soil Management • Water Waste Prevention • Landscape and Irrigation Design • Public Education Plans • Irrigation scheduling and efficiency • Annual Reporting • Recycled Water In general, the CA MWELO requires specific water efficiency, and will make it difficult to install and maintain turf in new developments that are dependent on potable water. Use of recycled water is exempt from these limitations. The revisions to the CA MWELO reduce the size threshold of landscape projects subject to the water efficiency requirements from 2,500 square feet of landscaping to 500 square feet of landscaping for commercial, residential, industrial and institutional projects that require a permit, plan check or design review. The size threshold for existing landscapes that are rehabilitated has not changed, remaining at 2,500 square feet. Only rehabilitated landscapes that are associated with a building permit, plan check or design review are subject to the CA MWELO. Lar:id-use agencies will also be required to report on ordinance adoption and enforcement each year, beginning December 31, 2015. Specifically, the most significant revisions made to the CA MWELO include more efficient . irrigation systems, including requirements for: 1. Dedicated landscape water meters for residential landscapes over 5,000 square feet, and non-residential landscapes over 1,000 square feet. 2. Irrigation systems to have pressure regulators and master shut-off valves. 3. All irrigation emission devices to meet the national standard stated in the CA MWELO to ensure that only high efficiency sprinklers are installed. 4. Flow sensors that detect and report high flow conditions due to broken pipes and/or popped sprinkler heads for landscape areas greater than 5,000 square feet. Item 12.b. - Page 3 CITY COUNCIL CONSIDERATION OF AN ORDINANCE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE REGARDING WATER EFFICIENT LANDSCAPE REQUIREMENTS AND ADOPTING BY REFERENCE THE MODEL WATER EFFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA; DEVELOPMENT CODE AMENDMENT CASE NO. 15-002; 'LOCATION -CITYWIDE; APPLICANT -CITY OF ARROYO GRANDE NOVEMBER :24, 2015 PAGE4 5. Ten-foot (1 O') minimum width (changed from 8 feet) for areas that can use spray irrigation. Areas less than ten feet (1 O') wide must be irrigated with subsurface drip or other technology that produces no overspray or runoff. The CA MWELO revisions also include incentives for greywater usage, improvements for on-site stormwater capture, limiting the portion of landscapes that can be planted with high water use plants, and annual reporting requirements for local agencies. Currently, the City allows for certain types of greywater and rainwater reuse systems. It is anticipated that mandates for these water reuse systems for new construction will not occur 'until after being further vetted through the statewide building code update process. However, given the multi-year drought conditions and uncertain future water supply, the Council might consider an addition to the ordinance t~at all new residential and mixed-use developments be required to install plumbing for greywater reuse capabilities. To clarify, greywater is water previously used by the interior of the house from clothes washers, bathtubs, showers, or bathroom sinks and reused for outdoor irrigation. It does not include water from toilets, kitchen sinks, or dishwashers. Greywater systems vary from simple and inexpensive designs that do not require a permit to complex systems that require adherence to California Plumbing Code regulations. There are basically two types of greywater systems: gravity fed manual systems and package systems. The manual systems do not require electricity or pumps because they work on gravity taking the greywater to the area needed (e.g. "laundry to landscape"). Packaged systems require electricity but are self-contained and can be installed indoors. Currently, San Francisco is the only jurisdiction within the State that requires greywater and blackwater systems to be installed with new large development (250,000 square feet , or more). However, Tucson Arizona adopted a greywater reuse ordinance in 2008 that is more applicable for residential projects. If Council favors including greywater reuse for all new residential and mixed-use development, staff recommends that the following requirements apply (adapted from the Tucson ordinance): - • All new dwellings shall include either a separate multiple pipe outlet or a diverter valve, and an outside "stub-out" installation on clothes washing machine hook-ups, allowing separate discharge of greywater for direct irrigation. • All new dwellings shall include a building drain(s) for bathroom sinks, showers and bathtubs, segregated from drains for all other plumbing fixtures, and connected a minimum of three (3) feet from the limits of the foundation, to allow for future installation of a distributed greywater system. • All greywater systems shall be designed and operated according to the provisions of the California Plumbing Code. Item 12.b. - Page 4 CITY COUNCIL CONSIDERATION OF AN ORDINANCE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE REGARDING WATER EFFICIENT LANDSCAPE REQUIREMENTS AND ADOPTING BY REFERENCE THE MODEL WATER EFFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA; DEVELOPMENT CODE AMENDMENT CASE NO. 15-002; LOCATION -CITYWIDE; APPLICANT -CITY OF ARROYO GRANDE NOVEMBER 24, 2015 PAGE 5 · See Attachments 2 and 3 for more information on greywater. ALTERNATIVES: The following alternatives are presented for the Council's consideration: • Introduce .the ordinance as proposed, including greywater plumbing requirements for all new residential and mixed-use developments; • Modify and introduce the ordinance to exclude greywater plumbing requirements; • Do not introduce the ordinance and direct staff to develop an alternative ordinance that is at least as effective as the CA MWELO; or • Provide other direction to staff. ADVANTAGES: Introducing the proposed ordinance would have the following advantages: 1. Reduces municipal water usage for the City; 2. Brings the City into conformance with CA MWELO requirements; and 3. Allows the City to follow the State standards without having to add the CA MWELO in its entirety to the City's Municipal Code. DISADVANTAGES: 1. The CA MWELO includes new reporting by cities to the State. City staff time will be required to create a system of tracking and reporting, prepare reports and transmit the annual reports to the State. · 2. The size of landscapes subject to the Ordinance has been lowered from 2,500 square feet to 500 square feet for projects requiring a permit, plan check or design review. Therefore, a greater number of applicants will ·be subject to the new regulations, which will add costs to the overall project (e.g. separate · irrigation meters, pressure regulators, master shut-off valves, high efficiency sprinklers, flow sensors, onsite stormwater capture). ENVIRONMENTAL REVIEW: This Ordinance has been· determined to be exempt from the California Environmental Quality Act (CEQA) in accordance with Section 15307 'of the State CEQA Guidelines for ac;tions by regulatory agencies for protection of natural resources. The Model Water Efficient Landscape Ordin~nce addresses the protection of statewide water resources by requiring certain landscaping proj~cts to analyze their water budget. There is no evidence that the proposed project may have a potentially significant effect on the environment. As such, the project qualifies for exemption pursuant to Section 15061 (b )(3) of the State CEQA Guidelines.· Item 12.b. - Page 5 CITY COUNCIL CONSIDERATION OF AN ORDINANCE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE REGARDING WATER EFFICIENT LANDSCAPE REQUIREMENTS AND ADOPTING BY REFERENCE THE MODEL WATER EFFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA; DEVELOPMENT CODE AMENDMENT CASE NO. 15-002; LOCATION -CITYWIDE; APPLICANT -CITY OF ARROYO GRANDE NOVEMBER 24, 2015 PAGES PUBLIC NOTIFICATION AND COMMENTS: The Agenda was posted in front of City Hall on Thursday, November 19, 2015. The Agenda and· report were posted on the City's website on F·riday, November 20, 2015. No public comments were received. Attachments: 1. State's Model Water Efficient Landscape Ordinance (CA MWELO) 2. San Luis Obispo Guide to the Use of Greywater 3. City of Tucson -Residential Greywater Information Guide Item 12.b. - Page 6 ORDINANCE NO. AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF ARROYO GRANDE AMENDING CHAPTER 16.84 OF THE ARROYO GRANDE MUNICIPAL CODE ADOPTING BY REFERENCE THE MODEL WATER l;:FFICIENT LANDSCAPE ORDINANCE OF THE STATE OF CALIFORNIA AS CONTAINED IN THE CALIFORNIA. CODE OF REGULATIONS TITLE 23 WATERS, DIVISION 2, DEPARTMENT OF WATER RESOURCES, CHAPTER 2. 7, MODEL WATER EFFICIENT LANDSCAPE ORDINANCE, SECTIONS 490 ET. SEQ., INCLUDING MANDATORY PLUMBING FOR GREYWATER REUSE CAPABILITIES FOR NEW RESIDENTIAL AND MIXED- USE DEVELOPMENT WHEREAS, on January 17, 2014, the Governor of the State of California declared a state of emergency due to record dry conditions and concerns over the State's dwindling water supplies, and on April 25, 2014, the Governor' declared a continued state of emergency due to the persistent drought conditions and 'the need for additional expedited actions; an9 · WHEREAS, on· April 1, 2015, Governor Brown issued Executive Order B-29-15, which ordered the State Water Resources Control Board to impose significant new water use restrictions, including directing that the Department of Water Resources revise the existing Model Efficient Landscape Ordinance contained in California Code of Regulations Title 23, Division 2, Chapter 2.7, Sections 490 et. seq. through expedited regulations; and WHEREAS, on July 15, · 2015 '.the new Model. Efficient Landscape Ordinance was adopted by the California Water Commission, and State law requires that all land-use agencies adopt a water-efficient landscape ordinance that is at least as efficient as the Model Ordinance prepared by the Department of Water Resources; and WHEREAS, Government· Code Section 50022.1 et seq. provides that ordinances and codes of the Federal, State or any .agency of either of them, may ·be adopted by reference, provided that prior to such adoption by reference a noticed public hearing has been held; and WHEREAS, greywater systems constructed an'd . operated according to .California Plumbing Code reg.ulations provide a safe method of reducing water demand; and WHEREAS, greywater systems.can save a typical household more than 13,000 gallons of potable water per year; and Item 12.b. - Page 7 ORDINANCE NO. PAGE2 WHEREAS, installation of sub-outs at the time of construction greatly facilitate the use of greywater in residences; and WHEREAS, at its meeting of December 8, 2015 the City Council of the City of Arroyo Grande conducted a duly noticed public hearing on the matter of adopting the State's Model Water Efficient Landscape Ordinance by amending Chapter 16.84 of the Arroyo Grande Municipal Code, including mandatory pluming provisions for greywater reuse capabilities for new residential and mixed-use development. NOW, THEREFORE BE IT ORDAINED by the City Council of the City of Arroyo Grande as follows: - SECTION 1. Chapter 16.84 of the Arroyo Grande Municipal Code is hereby repealed and amended in its entirety to read as follows: "Chapter 16.84 -WATER EFFICIENT LANDSCAPE REQUIREMENTS 16.84.010 Adoption of the Model Water Efficient Landscape Ordinance The "Model Water Efficient Landscape Ordinance" of the State of California, as contained in California Code of Regulations Title 23 Waters, Division 2 Department of Water Resources, Chapter 2.7 Model Water Efficient Landscape Ordinance, Sections 490 et. seq. is hereby adopted by reference as the water efficient landscape ordinance of the City of Arroyo Grande, as the same may be amended from time to time, as if set out in full in this Chapter. A copy of the Model Water Efficient Landscape Ordinance of the State of .California shall be maintained in the City of Arroyo Grande Community Development Department office and shall be made available for public inspection while this ordinance is in force. "Local agency" in the Model Water Efficient Landscape Ordinance s~all mean the City of Arroyo Grande." 16.84.020 -Greywater Applications 1. All new dwellings shall include either a separate multiple pipe outlet or a diverter valve, and an outside "stub-out" installation on clothes washing machine hook-ups, allowing separate discharge of greywater for direct irrigation. 2. All new dwellings shall include a building drain(s) for bathroom sinks, showers and bathtubs, segregated from drains for all other plumbing fixtures, and connected a minimum of three (3) -feet from the limits of the foundation, to allow for future installation of a distributed greywater system. 3. All greywater systems shall be designed and operated accor~iing to the provisions of-the California Plu~bing Code. SECTION 2. This Ordinance has been determined to be exempt from the California Environmental Quality Act (CEQA) in accordance with Section 15307 of the State CEQA Guidelines for actions by regulatory agencies for protection of natural resources. The Model Water Efficient Landscape Ordinance addresses the protection of statewide Item 12.b. - Page 8 ORDINANCE NO. PAGE3 water resources by requiring certain landscaping projects to analyze their water budget. There is no evidence that the proposed project may have a potentially significant effect -- on the environment. As such, the project qualifies-for exemption pursuant to Section 15061 (b )(3) of the State CEQA Guidelines. SECTION 3. If any section, subsection, subdivision, paragraph, sentence, or clause of this Ordinance or any part thereof is for any reason held to be unlawful, such decision shall not affect the validity of the remaining portion of this Ordinance or any part thereof. The City Council hereby declares that it would have passed each section, subsection, subdivision, paragraph, sentence, or clause thereof, irrespective of the fact that any one or more section, subsection, subdivision, paragraph,-sentence, or clause be declared _unconstitutional. SECTION 4. A summary of this Ordinance shall be_ published in a newspaper published and circulated in the City of Arroyo Grande at least five (5) days prior to the City Council meeting at which the proposed Ordinance is to be adopted. A certified copy of the full text of the proposed Ordinance shall be posted in the office of the City Clerk: Within fifteen (15) days after adoption of the Ordinance, the summary with the name$ of those City Council Members -voting for and against the Ordinance shall be published again, and the City Clerk shall post a -certified copy of the full text of such adopted Ordinance: - SECTION 5. This Ordinance shall take effect thirty (30) days after its adoption. On motion by Council Member ___ , seconded by Council Member ___ , and by the following roll call vote to wit: AYES: NOES: ABSENT: the foregoing-Ordinance was adopted this __ day of ___ , 2015. Item 12.b. - Page 9 ORDINANCE NO. PAGE4 JIM HILL, MAYOR ATTEST: KELLY WETMORE, CITY CLERK APPROVED AS TO CONTENT: DIANNE THOMPSON, CITY MANAGER APPROVED AS TO FORM: HEATHER WHITHAM, CITY ATTORNEY Item 12.b. - Page 10 IATTACHMENT 1: Title 23 Department of Water Resources I § 490 r entcnng into the loan contract. For investor-owned utilities, meetings or hearmgs held by the Public Ut1ht1es Commission may serve as Project Feasibility Meetmgs. (b) Before a Project Feas1b1hty Meetmg, the supplier shall: (I) Make available mformat1011 describing the project in a fonn and lo- cation that will enable the water users to review it and to make appropn- ate comments The informat10n must be made available for a penod of at least fifteen days before the Project Feasibility Mcetmg. (2) Establish a date for the meeting agreeable to the Department and Department of Health Services. (3) Notify the Department, the Department of Health Services and ap- propnate county health agencies m writing at least twenty calendar days before the meeting, and notify all water users and the local news media in writing at least fifteen calendar days before the meetmg. The notice shall state· the date, time, locat10n, and purpose of the meeting and the location of mformation describing the project for review by the water us- ers. Sample notice forms will be provided by the Department. ( 4) Obtam a meetmg place of sufficient size and at a convement loca- tion to accommodate the anticipated attendance. ( c) The agenda of the meeting shall include the following matters: (I) A discussion of applicable public health and water works standards, ex- istmg and potential health hazards associated with the water system, how the proposed project will bnng the system to mmimum health standards, and alternative solutions to the problem (2) The supplier shall describe the proposed pro.1ect in detail, using maps, charts, and other illustrative devices, if appropriate. The discussion shall include the costs, sources of funds, the amount of the loan-grant commitment, and changes 111 water costs resulting from the project. (3) A representative of the State may describe the Act, the State's role in its admm1strat10n and the Department"s recommcndat10n regardmg the suppher's loan application. Persons present at the meeting shall be penmtted to ask questions regarding all subjects discussed at the meet- ing ( d) If no representative of the Department is present at the meeting, the supplier shall submit an official wntten report to the Department describ- ing the meeting and its outcome includmg the results of any vote taken. Nore Authority cited· Sect10n 13834, Water Code. Reference. Sect10n 13834, Water Code § 489.1. Plans and Specifications. Before commencing constmction, each Supplier shall provide de- tailed plans and specifications to the Department of Health Services for review and approval by a registered Civil Engineer employed by the De- partment of Health Services. Unless othenvise authonzcd m writmg by the Department of Health Services, the supplier shall not commence con- struct10n without written notificat10n from the Department ofHealth Ser- vices that the plans and specifications have been approved. NOTE Authority cited: Scct10n 13834, Water Code. Reference: Scct10n 13837, Water Code. § 489.2. Certification of Completion. Department of Health Services shall mspect the completed project and 1f satisfied that the project has been completed in accordance with ap- proved plans and specifical!ons, shall provide the supplier and the De- partment with wntten cerufication to that effect. NOTE Authonty cited· Section 13834, Water Code. Reference. Section 13834, Water Code. Chapter 2.6. Weather Resources Management [Repealed] NOTE Authonty cited: Sect10ns 161. 401, 403 and 6078, Water Code Reference: Sect10ns 401. 402 and 403, Water Code and Sections 21000 et seq .. Public Re- som ces Code HISTORY 1 New Subchapter 2 6 (A1t1cles 1-5. Sections 49~95 03, not consecutive) filed 9-28-79, effective th1rt1eth day thereafter (Register 79, No 39) 2 Repealer of Subchaptcr 2 6 (Arncles 1-5, Sections 49~95 03. not consecu- twc, not prev10usly repealed by OAL Order of Repeal) filed 6-5-86. effective thJrheth day thereafter (Register 86. No. 23). For puor history, see Register 85, No. 26; 81, Nos. 40 and 38; and 80. No. 7 Chapter 2.7. Model Water Efficient Landscape Ordinance § 490. Purpose. (a) The State Legislature has found: ( 1) that the waters of the state are oflmuted supply and are subject to ever increasing demands, (2) that the continuation of California's economic prosperity 1s depen- dent on the availabihty of adequate supplies of water for future uses; (3) that it 1s the pohcy ofthe State to promote the conservation and effi- cient use of water and to prevent the waste of this valuable resource; ( 4) that landscapes are essential to the quality of life in California by providing areas for active and passive recreation and as an enhancement to the environment by cleaning air and water, preventing erosion, offer- ing fire protection, and replacing ecosystems lost to development; (5) that landscape design, mstallatton, maintenance and management can and should be water efficient; ( 6) that Section 2 of Article X of the California Constitution specifies _ that the right to use water is limited to the ainow1t reasonably reqrnred for the beneficial use to be served and the right does not and shall not extend to waste or unreasonable method of use. (b) Consistent with the legislative fmdings, the purpose of this model ordinance is to: ( 1) promote the values and benefits oflandscaping practices that mte- grate and go beyond the conservation and efficient use of water; (2) establish a structure for planning, des1gmng, installing, mamtain- ing and managing water efficient landscapes in new construction and re- habihtated projects by encouragmg the use of a watershed approach that reqrnres cross-sector collaboration of industry, government and proper- ty owners to achieve the many benefits possible, (3) establish provisions for water management practices and water waste prevention for existing landscapes; ( 4) use water efficiently without waste by settmg a Maximum Applied Water Allowance as an upper limit for water use and reduce water use to the lowest practical amount, (5) promote the benefits of consistent landscape ordmances with neighboring local and regional agencies; (6) encourage local agencies and water purveyors to use economic in- centives that promote the efficient use of water, such as unplementmg a tiered-rate structure; and (7) encourage local agencies to designate the necessary authority that unplements and enforces the provisions of the Model Water Efficient Landscape Ordinance or 1ls local landscape ordinance. (c) Landscapes Umt are planned, designed, installed, managed and mamtained with the watershed based approach can improve California's environmental cond1t10ns and provide benefits and realize sustainability goals. Such landscapes will make the urban environment resilient 111 the" face of chmattc extremes. Consistent with U1e legislative findmgs and purpose of the Ordinance. conditions in the urban settmg will be im- proved by: (1) Creatmg tl1e conditions to support hfe 111 the soil by reducmg com- paction, incorporating orgamc matter that increases water retent10n, and promotmg productive plant growth that leads to more carbon storage, ox- ygen production, shade, habitat and esthetic benefits. (2) Minnmzing energy use by reducmg 1mgat1on water requirements, reducing reliance on petroleum based fertilizers and pesticides, and plantmg climate appropnate shade trees 111 urban areas. (3) Conservmg water by capturmg and reusmg ramwater and graywa- ter wherever possible and selecting clnnate appropriate plants that need mnumal supplemental water after establishment. ( 4) Protectmg mr and water quality by reducmg power equipment use and landfill disposal tnps, selecting recycled and locally sourced maten- Page 37 RcgISter 2015, No 38, 9-18-2015 Item 12.b. - Page 11 § 490.1 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 als, and usmg compost, mulch and efficient irrigat10n eqmpment to pre- vent erosion. (5) Protectmg existing habitat and creating new habitat by choosing local native plants, climate adapted non-natives and avoiding mvasive plants Utilizing integrated pest management with least toxic methods as the first course of action NOTE Authority CJted Secl!on 65593, Government Code; and seet10ns 11and30, Governor's Exec. Order No B-29-15 (April 1, 2015) Reference. Sec hons 65591. 65593 and 65596, Government Code: and section 11, Governor's Exec. Order No B-29-15 (Apnl I. 2015). HISTORY 1. New chapter 2.7 (sections 49~95) filed 7-31-92; operative 7-31-92 (Regis- ter 92, No. 32) 2. Amendment ofseetion and NOTE filed 9-10-2009: operative 9-10-2009 pur- suant to Govenunent Code section 11343.4 (Register 2009, No. 37). 3. Amendment of subsectlom, (a)(4) and (b)(l)-(2), new subsect10ns (c)-(c)(5) and amendment of NOTE filed 9-15-2015, operative 9-15-2015 Exempt from OAL review and subnutlcd to OAL for printmg only pursuant lo Governor's Executive Order No B-29-15 (4--1-2015) (Register 2015, No 38). § 490.1. Applicability. (a) After December 1, 2015, and consistent with Executive Order No. B-29-15, tlus ordmance shall apply to all of the following landscape projects· (1) new construcuon projects with an aggregate landscape area equal to or greater than 500 square feet requiring a buildmg or landscape per- mit, plan check or design review; (2) rehabilitated landscape projects with an aggregate landscape area equal to or greater than 2,500 square feet requiring a building or land- scape peimit, plan check, or design review; (3) existing landscapes limited to Sections 493, 493.1 and 493.2: and ( 4) cemetenes. Recognizing the special landscape management needs of cemeteries, new and rehabilitated cemeteries are limited to Sections 492.4, 492.11, and 492. 12; and existmg cemeteries are luruted to Sec- tions 493, 493.1, and 493 2. (b) For local land use agencies working together to develop a regional water efficient landscape ordmance, the reporting reqmrements of this ordinance shall become effective December 1, 2015 and the remamder of this ordinance shall be effechve no later than Febmaty I, 2016. ( c) Any project with an aggregate landscape area of 2,500 square feet or less may comply with the pe1fom1ance requirements of this ordinance or confonn to the prescnptive measures contamed in Appendix D. ( d) For projects using treated or untreated graywater or ram water cap- tured on site, any lot or parcel within the project that has less than 2500 sq. ft. oflandscape and meet~ the lot or parcel's landscape water reqmre- ment (Estimated Total Water Use) entirely with treated oruntreated gray- water or through stored rainwater captured on site is subject only to Ap- pendix D section (5). (e) This ordinance does not apply to: (I) registered local, state or federal historical sites; (2) ecological restoratJon projects that do not require a pemmnent ir- ngation system; (3) mmed-land reclamation projects that do not require a permanent irrigation system; or (4) existing plant collections, as part ofbotarucal gardens and arbore- ttuns open to the pubhc. NOTE. Authority cited Section 65595, Government Code. and sections 11and30, Governor's Exec Order No B-29-15 (Apnl I, 2015). Reference· Section 65596. Government Code; and section 11, Governor's Exec Order No. B-29-15 (Apnl 1. 2015). HISTORY I. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code sect10n 11343.4 (Register 2009, No. 37) 2. Amendment of section and NOTE filed 9-15-2015; operative 9-15-2015. Ex- empt from OAL renew and submitted to OAL for pnnting only pursuant to Governor's Executive Order No. B-29-15 (4--1-2015) (Reg1ster2015, No. 38). § 491. Definitions. The tem1s used m this ordinance have the meaning set forth below: (a) "apphed water" means the portion of water supplied by tl1e irriga- t10n system to the landscape. (b) "automauc irrigat10n controller" means a timing device used to re- motely control valves that operate an migation system. Automatic irriga- tion controllers are able to self-adjust and schedule migation events us- ing either evapotranspiration (weather-based) or s01l moisture data. (c) "backflow prevention device" means a safety device used to pre- vent pollution or contamination of the water supply due to the reverse flow of water from the irrigation system. (d) "Certificate of Complet1011" means the document required under Sect10n 492.9. · ( e) "certified irrigat10n designer" means a person certified to design irrigation systems by an accredited academic instituhon, a profess10nal trade organization or other program such as the US Environmental Protection Agency's WaterSense migation designer certification pro- gram and Irrigation Association's Certified Irrigation Designer program. (f) "certified landscape migation auditor'" means a person certified to perform landscape irrigation audits by an accredited academic mstitu- t10n, a professional trade orgamzation or other program such as the US Environmental Protection Agency's WaterSense migation auditor certi- fication program and Irrigation Association's Certified Landscape Ir- ngation Auditor program. (g) "check valve" or "anti-dram valve" means a valve located under a sprinkler head. or other locahon m the irrigat1011 system, to hold water in the system to prevent dramage from spnnkler heads when the sprinkler is off. . (h) "common interest developments" means commumty apartment projects, condominium projects, planned developments, and stock coop- eratives per Civil Code Section 1351. (i) "'compost" means the safe and stable product of controlled biologic decomposition of organic materials that is beneficial to plant growth. (j) "conversion factor (0.62)" means the number that converts acre- mches per acre per year to gallons per square foot per year. (k) "distnbutipn uniformity" means the measure of the unifonmty of irrigation water over a defined area. ({) "drip irrigation" means any non-spray low volume migatwn sys- tem utilizing emission devices witl1 a flow rate measured in gallons per hour. Low volume rrngation systems are specifically designed to apply small volumes of water slowly at or near the root zone of plants. (m) "ecological restoration project" means a project where the site 1& mtentionally altered to establish a defined, indigenous, historic ecosys- tem. (n) "effective precipitation" or "usable rainfall" (Eppt) means the por- t10n of total precipitation which becomes available for plant growth. ( o) •·emitter" means a drip irrigat10n emission device that delivers wa- ter slowly from the system to the soil. (p) "established landscape" means the point at which plants in the landscape have developed sigmficant root growth mto the soil. Typical- ly, most plants arc established after one or two years of growth. (q) "establishment penod of the plants"' means the first year after installing the plant in the landscape or the first two years if irrigat10n will be termmated after establishment. Typically, most plants are established after one or two years of growth. Native habitat mitigat10n areas and trees may need tl1ree to five years for establishment. (r) "Estimated Total Water Use" (ET\VU) means the total water used for tl1e landscape as descnbed m Section 492.4. (s) "ET adjustment factor" (ETAF) means a factor of0.55 for residen- tial areas and 0.45 for non-residential areas, that. when applied to refer- ence evapotransp1ration, adjusts for plant factors and irrigation efficien- cy, two major influences upon the amount of water tliat needs to be applied to the landscape. The ET AF for new and existing (non-rehabili- tated) Special Landscape Areas shall not exceed 1.0. The ET AF for exist- ing non-rehabilitated landscapes is 0.8. Page 38 Regi.let 2015, No 38, 9-i8-2015 Item 12.b. - Page 12 Title 23 Department of Water Resources § 491 (t) "evapotranspirauon rate" means the quantity of water evaporated from adjacent soil and other surfaces and transpired by plants during a specified tnne. (u) "flow rate" means the rate at which water flows through pipes, valves and em1ss10n deVIces, measured m gallons per minute, gallons per hour, or cubic feet per second. (v) "flow sensor" means an inline device mstalled at the supply pomt of the irrigation system that produces a repeatable signal proportional to flow rate. Flow sensors must be connected to an automatic irrigation con- troller, or flow monitor capable of receivmg flow signals and operatmg master valves. This combination flow sensor/controller may also func- tion as a landscape water meter or submeter. (w) "friable"' means a soil condit10n that is easily crumbled or loosely compacted down to a minimum depth per planting material reqmre- ments, whereby the root strncture of newly planted material will be al- lowed to spread unimpeded. (x) "Fuel Modification Plan Gmdcline" means guidelines from a local fire authority to assist residents and businesses that are developing land or bmldmg structures m a fire hazard severity zone. (y) "graywater" means unu·eated wastewater that has not been con- tammated by any toilet discharge, has not been affected by infect10us, contaminated, or unhealthy bodily wastes, and does not present a threat from contammation by unhealthful processmg, manufacturing, or oper- atmg wastes. "Graywater" includes, but 1s not limited to, wastewater from bathtubs, showers, bathroom washbasins, clothes washing ma- chine~, and laundry tubs, but does not include wastewater from kitchen smks or dishwashers. Health and Safety Code Section 17922.12. (z) "hardscapes" means any durable matenal (perv10us and non-per- vious). ( aa) "hydrozonc" means a portion of the landscaped area havmg plants with similar water needs and rooting depth. A hydrozone may be mi- gated or non-migated. (bb) "infiltration rate"' means the rate of water entry into the soII ex- pressed as a depth of water per unit of time (e.g., inches per hour) (cc) "invasive plant species" means species of plants not histoncally found m California that spread outside cultivated areas and can damage environmental or economic resources. Invasive species may be regulated by county agricultural agencies as noxious species. Lists of invasive plants are mamtained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database. ( dd) "irrigation audit'" means an 111--depth evaluation of the perfor- mance of an irrigation system conducted by a Certified Landscape Imga- tion Auditor. An irrigation audit mcludes, but 1s not lnmted to: mspec- ilon, system tune-up, system test with distribution urnformity or emission umforn1ity, reporting overspray or runoff that causes overland flow, and preparat10n of an imgat10n schedule. The audit must be con- ducted ma manner consistent with the Irrigal!on Associat10n's Land- scape Irrigation Auditor Certification program or other U.S. Environ- mental Protection Agency "Waterscnse" labeled auditmg program. ( ee) "imgat10n efficiency" (IE) means the measurement of the amount of water beneficially used divided by the amount of water applied. Irriga- tion efficiency is derived from measmements and estimates of irrigation system charactenst1cs and management practices. The irrigation effi- ciency for pm1Joses of this ordinance are 0. 7 5 for overhead spray devices and 0.81 for drip systems. (ff) "Irngat10n survey" means an evaluation of an Irngation system that is less detailed than an 1rrigat10n audit. An irrigation survey mcludes, but is not limited to: mspection. system test, and wntten recommenda- tions to improve performance of the Jl'rigat10n system. (gg) "irrigat10n water use analysis" means an analysis of water use data based on meter readmgs and billmg data. (hh) "landscape architect" means a person who holds a license to prac- tice landscape arclutecture in the state of California Business and Profes- sions Code. Section 5615. (ii) "landscape area" means all the planting areas. turf areas, and water features in a landscape design plan sub.icct to the Maximum Apphcd Wa- ter Allowance calculation. The landscape area does not mcludc foot- prints of buildmgs or structures, sidewalks, driveways, parking lots, decks, pat10s, gravel or stone walks, other perv10us or non-pervious hardscapes, and other non-irrigated areas designated for non-develop- ment (e.g., open spaces and ex1stmg native vegetation). Gj) "landscape contractor" means a person licensed by the state of California to construct, mamtain, repair, install, or subcontract the devel- opment oflandscape systems (kk) "Landscape Documentation Package" means the documents re- qmred under Sect10n 492.3. (ll) "landscape project" means total area of landscape in a project as defined in "landscape area" for the purposes of this ordmance, meeting reqmrements under Section 490.1. (mm) "landscape water meter" means an inline device installed at the irrigat10n supply pomt that measmes the flow of water into the irrigation system and is connected to a totalizer to record water use. (nn) "lateral line"' means the water delivery pipeline that supplies wa- ter to the emitters or spnnklers from the valve. (oo) "local agency" means a city or county, mcludmg a charter city or charter county, that is responsible for adopting and implementing the or- dinance. The local agency is also responsible for the enforcement of this ordinance, mcludmg but not lnmted to, approval of a permit and plan check or design review of a project. (pp) "local water purveyor" means any entity, includmg a public agency, city, county, or pnvate water company that provides retail water service. ( qq) "low volume irrigat10n" means the application of inigat1on water at low pressure through a system of tubing or lateral lines and low-vol- ume emitters such as drip, drip lines, and bubblers. Low volume miga- tion systems m·e specifically designed to apply small volumes of water slowly at or near the root zone of plants. (rr) ''mam hne'· means the pressunzed p1pclme that delivers water from the water source to the valve or outlet. (ss) "master shut-off valve" 1s an automatic valve installed at their- rigation supply pomt which controls water flow mto the imgation sys- tem. When tl11s valve 1s closed water will not be supplied to the imgat10n system A master valve will greatly reduce any water loss due to a leaky station valve. (tt) "Maximum Applied Water Allowance"' (MA WA) means the up- per limit of annual applied water for the established landscaped area as specified in Section 492.4. It 1s based upon the area's reference evapo- transpiration, the ET Adjustment Factor, and the size of the landscape area. The Estimated Total Water Use shall not exceed the Maximum Ap- phed Water Allowance. Special Landscape Areas, mcludmg recreat10n areas, areas pernmnently and solely dedicated to edible plants such as or- chards and vegetable gardens, and areas irrigated with recycled waler are subject to U1e MA WA wiU1 an ET AF not to exceed 1.0. MA WA= (ETo) (0.62) [(ETAF x LA)+ ((1-ETAF) x SLA)] (uu) "median" is an area between opposing lanes of traffic that may be unplanted or planted witl1 trees, shrubs, peremuals, and ornamental grasses. (vv) "rnicroclimate" means the climate of a small, specific area that may contrast with the climate of the overall landscape area due to factors such as wind, sun exposure, plant density, or proximity to reflective sur- faces. (ww) "mmed-land reclamation projects" means any surface mmmg operation with a reclamat10n plan approved in accordance with the Sur- face Mimng and Reclamation Act of 1975. (xx) "mulch" means any orgamc matenal such as leaves, bark, straw, compost, or morganic mineral matenals such as rocks, gravel, or decom- posed gramte left loose and applied to the soil surface for the beneficial purposes of reducing evaporation, suppressmg weeds, moderating soil temperature, and preventmg soil erosion (yy) "new construct10n" means, for the purposes of this ordmm1ce, a new buildmg with a landscape or other new landscape, such as a park, playground, or greenbelt without an associated bmldmg. Page38.1 Reg1Ster2015,1'o 38,9-18-2015 Item 12.b. - Page 13 § 492 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 (zz) "non-residential landscape" means landscapes in commercial, institutional, industrial and pubhc settmgs that may have areas desig- nated for recreation or pub he assembly It also rncludes portions of com- mon areas of common interest developments with designated recreation- al areas. (aaa) '·operating pressure" means the pressure at which the parts of an irrigat10n system are designed by the manufacturer to operate. (bbb) "overhead sprmkler 1mgation systems" or "overhead spray ir- rigation systems" means systems that deliver water through the air (e.g., spray heads and rotors). (ccc) "overspray" means the irrigation water which is delivered be- yond the target area (ddd) "parkway" means the area between a sidewalk and the curb or traffic lane. lt may be planted or unplanted,~ and with or without pedes- trian egress. (eee) "permit" means an authorizing document issued by local agen- cies for new constmction or rehabilitated landscapes. (fff) "perv10us"' means any surface or matenal that allows the passage of water through the matenal and into the underlying soil. (ggg) "plant factor" or "plant water use factor" is a factor, when multi- plied by ETo, estimates the amount of water needed by plants. For pur- poses of this ordinance, the plant factor range for very low water use plants is 0 to 0.1, the plant factor range for low water use plants is 0.1 to 0.3, the plant factor range for moderate water use plants is 0.4 to 0 6, and the plant factor range for high wateruse plants is 0.7 to 1.0. Plant factors cited in this ordmance are denved from the publication "Water Use Clas- sification of Landscape Species". Plant factors may also be obtained from horhcultural researchers from acadenuc rnstitutions or professional associations as approved by the California Department of Water Re- sources (DWR). (hhh) "project applicant" means the individual or entity submitting a Landscape Documentation Package required under Section 492.3, to re- quest a permit, plan check, or design review from the local agency. A project applicant may be the property owner or his or her designee. (iii) "rain sensor" or "rain sensmg shutoff device" means a component winch automatically suspends an irrigation event when it rains. UjJ) "record drawing" or "as-builts" means a set ofreproducible draw- ings which show sigmficant changes 111 the work made during construc- tion and which are usually based on drawings marked up m the field and other data furnished by the contractor. (kkk) "recreational area" means areas, excludmg pnvate single family residenual areas, designated for active play. recreation or public assem- bly 111 parks, sports fields, picnic grounds, amphitheaters or golf course tees, fairways, roughs, surrounds and greens. (Ill) "recycled water," "reclaimed water," or "treated sewage effluent water" means treated or recycled waste water of a quality suitable for nonpotable uses such as landscape rrrigat10n and water features. This wa- ter is not intended for human consumpt10n. (mmm) "reference evapotransp1ration" or "ETo" means a standard measurement of environmental parameters which affect the water use of plants. ETo is expressed in inches per day, month. or year as represented in Appendix A, and is an estimate of the evapotransp1rat1on of a large field of four-to seven-inch tall, cool-season grass that 1s well watered. Reference evapotranspirat10n 1s used as the basis of detennmmg the Maximum Apphed Water Allowances so that regional differences in cli- mate can be acc01mnodated. (nun) "Regional Water Efficient Landscape Ordmance" means a local Ordinance adopted by two or more local agencies, water suppliers and other stakeholders for implementing a consistent set oflandscape provi- sions throughout a geograplucal region Regional ordinances are strong- ly encouraged to provide a consistent framework for the landscape indus- try and applicants to adhere to. ( ooo) "rehab1htated landscape" meai1s any re landscaping project that requires a permit, plan check, or design review, meets the requirements of Section 490.1, and the modified landscape area is equal to or greater than 2,500 square feet. (ppp) "residential landscape" means landscapes surrounding single or multifamily homes ( qqq) "mn off' means water which is not absorbed by the soil or land- scape to winch 1t is app Lied and flows from the landscape area. For exam- ple, mn off may result from water that is applied at too great a rate (apph- cation rate exceeds infiltration rate) or when there is a slope. (rrr) "soil moisture sensing device" or "soil moisture sensor" means a device that measures the amount of water in the soil. The device may also suspend or mitiate an irrigation event. (sss) "soil texture" means the classification of soil based on its percent- age of sand, silt, and clay. (ttt) "Special Landscape Arca" (SLA) means an area of the landscape dedicated solely to edible plants, rccreat10nal areas, areas migated \Vi th recycled water, or water features usmg recycled water. (uuu) "spnnkler head" or "spray head" means a device which delivers water through a nozzle. (vvv) '·static water pressure" means the pipeline or municipal water supply pressure when water is not flowmg. (www) "station" means an area served by one valve or by a set of valves that operate srmultaneously. (xxx) "swing Joint" means an irrigation component that provides a flexible, leak-free connection between the emission device and lateral pipeline to allow movement m any direction and to prevent eqmpment damage. (yyy) "submeter" means a metering device to measure water apphed to the landscape that is installed after the primary utihty water meter. (zzz) "turf' means a ground cover surface of mowed grass. Annual bluegrass, Kentucky bluegrass, Perenmal ryegrass, Red fescue, and Tall fescue are cool-season grasses. Bennudagrass, Kikuyugrass, Seashore Paspall!lll, St. Augustinegrass, Zoysiagrass, and Buffalo grass are warm- scason grasses. (aaaa) "valve" means a device used to control the flow of water in the irngation system (bbbb) "water conserving plant species" means a plant species identi- fied as having a very low or low plant factor. ( cccc) "water feature" means a design element where open water per- forms an aesthetic or recreational function. Water features include ponds, lakes, waterfalls, fountains, artificial streams, spas, and swimming pools (where water is artificially supplied). The surface area of water features is included in the ]ugh water use hydrozone of the landscape area. Constructed wetlands used for on-site wastewater treatment or stormwa- ter best management practices that are not imgated and used solely for water treatment or stormwaterretention are not water features and, there- fore, are not subject to the water budget calculation. ( dddd) "watering window" means the time of day imgation is allowed. (eeee) "WUCOLS" means the Water Use Classification of Landscape Species published by the University ofCaliforma Cooperative Extension ai1d the Department of Water Resources 2014. NOTE. Authority cited: Section 65595, Government Code, and sections 11 and 30, Governor's Exec. Order No. B-29-15 (April 1, 2015). Reference: Secl!ons 65592 and 65596, Government Code, and scc(ion 11, Governor's Exec. Order No 13-29-15 (April 1. 2015). HlSTORY 1. New section filed 7-31-92. operative 7-31-92 (Register 92, No 32). 2. Amendment of section and Norn filed 9-10-2009, operative 9-10-2009 pur- suant to Government Code sect10n 11343.4 (Register 2009, No. 37). 3. Amendment ofsect10n and Norn filed 9-15-2015, operative 9-15-2015 Ex- empt from OAL review and submitted to OAL for pnntmg only pursuant to Governor's Executive Order No. B-29-15 (4--1-2015) (Reg1ster2015, No. 38) § 492. Provisions for New Construction or Rehabilitated Landscapes. (a) A local agency may designate by mutual agreement, another agency, such as a water purveyor, to implement some or all of the require- ments contained in tlus ordinance. Local agencies may collaborate with water purveyors to define each entity's specific responsibilities relating to this ordinance NOTE Authonty cited: Secllon 65595. Government Code, and sect10ns 11 and 30, Governor's Exec. Order No. B-29-15 (Apnl !, 2015). Reference. Section 65596, Page38.2 Reg1ste1 2015, No 38, 9-18-2015 Item 12.b. - Page 14 Title 23 Department of Water Resources § 492.5 Government Code; and section 11, Governor's Exec. Order No. B-29-15 (Apnl I. 2015). HISTORY 1. New sect10n filed 7-31-92; operative 7-31-92 (Register 92, No. 32). 2 Amendment of sect10n heading, repealer and new sect1011 and amendment of NOTE filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No 37). 3 Amendment of section and NOTE filed 9-15-2015. operative 9-15-2015. Ex- empt from OAL review and subnutted to OAL for printing only pursuant to Governor's Executive Order No B-29-15 (4-l-2015)(Reg1ster2015,No 38). § 492.1. Compliance with Landscape Documentation Package. (a) Prior to construction, the local agency shall: ( 1) provide the project applicant with the ordinance and procedures for permits, plan checks or design reviews; (2) review the Landscape Documentation Package submitted by the project applicant; (3) approve or deny the Landscape Documentation Package; (4) issue a pem1it or approve the plan check or design review for the project applicant; and (5) upon approval of the Landscape Documentation Package, submit a copy of the Water Efficient Landscape W orkshcet to the local water purveyor. (b) Prior to construction, the project applicant shall: (1) submit a Landscape Documentation Package to the local agency. (c) Upon approval of the Landscape Documentation Package by the local agency, the pro.iect applicant shall: (1) receive a pennit or approval of the plan check or design review and record the date of the permit m the Certificate of Completion; (2) submit a copy of the approved Landscape Documentation Package along with the record drawings, and any o lher mformation to the property owner or his/her designee; and (3) submit a copy of the Water Efficient Landscape Worksheet to the local water purveyor. NOTE Aulhonly cited: Section 65595, Government Code. Reference. Section 65596, Govennnent Code. HISlORY 1. New section filed 9-10-2009, operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No 37). § 492.2. Penalties. (a) A local agency may establish and administer penalties to the proj- ect applicant for non-compliance with the ordinance to the extent per- mitted by law. NOTE Authonty cited: Section 65595. Government Code. Reference Section 65596, Government Code. HISTORY I. New section filed 9-10-2009; operative 9-10-2009 pursuant lo Government Code sect10n 11343 4 (Register 2009, No. 37). § 492.3. Elements of the Landscape Documentation Package. (a) The Landscape Documentation Package shall mclude the follow- ing six (6) elements. ( 1) project rnfom1ation; (A) date (B) project applicant (C) project address (1f available, parcel and/or lot number(s)) (D) total landscape area (square feet) (E) project type (e.g., new, rehabilitated, public, private, cemetery, homeowner-installed) (F) water supply type (e.g., potable, recycled, well) and identify the lo- cal retail water purveyor if the applicant is not served by a private well (G) checklist of all documents in Landscape Documentat10n Package (H) project contacts to mclude contact information for the project ap- plicant and property owner (I) applicant signature and date with statement, "I agree to comply with the requirements of the water efficient landscape ordinance and submit a complete Landscape Documentat10n Package". (2) Water Efficient Landscape Worksheet; (A) hydrozone information table (B) water budget calculations 1. Maximwn Applied Water Allowance (MA WA) 2. Estimated Total Water Use (ETWU) (3) soil management report; (4) landscape design plan; (5) irrigation design plan; and ( 6) gradmg design plan. NOTE-Authonty cited. Sect10n 65595, Government Code. Reference. Scct10n 65596, Government Code HISTORY I. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code sect10n 11343 4 (Register 2009. No. 37). § 492.4. Water Efficient Landscape Worksheet. (a) A project applicant shall complete the Water Efficient Landscape Worksheet in Appendix B which contains mformation on the plant fac- tor, irngation method, irrigation efficiency, and area associated with each hydrozone. Calculations are then made to show that U1e evapotran- spiration adjustment factor (ET AF) for the landscape project docs not ex- ceed a factor of 0.55 for residential areas and 0.45 for non-rcs1dent1.al areas, exclusive of Special Landscape Areas The ET AF for a landscape project is based on the plant factors and irrigation methods selected. The Maximum Applied Water Allowance is calculated based on the maxi- mum ETAF allowed (0.55 for residential areas and 0.45 for non-residen- tial areas) and expressed as annual gallons required. The Estimated Total Water Use (ETWU) 1s calculated based on the plants used and irrigation method selected for the landscape design. ETWU must be below the MAWA. (1) In calculating the Maximum Applied Water Allowance and Esti- mated Total Water Use, a project applicant shall use the ETo values from the Reference Evapotransp1rat10n Table in Appendix A. For geographic areas not covered in Appendix A, use data from other cities located nearby in the same reference evapotranspiralion zone, as found m the CIMIS Reference Evapolranspiration Zones Map, Department of Water Resources, 1999. (b) Water budget calculations shall adhere to the following require- ments: ( 1) The plant factor used shall be from WU COLS or from horticultural researchers with academic institutions or profess10nal associat10ns asap- proved by the California Department of Water Resources (DWR). The plant factor ranges from 0 to 0.1 for very low water using plants, 0.1 to 0.3 for low water use plants, from 0 .4 to 0.6 for moderate water use plants, and from 0. 7 to 1.0 for high water use plants. (2) All water features shall be included m the lugh wateruse hydrozone and temporarily irrigated areas shall be mcluded in the low water use hy- drozone (3) All Special Landscape Areas shall be identified and their water use calculated as shown in Appendix B. (4) ETAF fornew and exislmg (non-rehabilitated) Special Landscape Areas shall not exceed l 0. NOTE Authonty cited. Section 65595. Government Code; and sect10ru. 11 and 30, Governor's Exec Order No B-29-15 (April 1, 2015). Reference· Section 65596, Government Code, and section 11. Governor's Exec Order No B-29-15 (April 1, 2015) HISTORY l. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section I 1343 4 (Register 2009. No. 37). 2. Amendment of sect10n and NOTE filed 9-15-2015; operative 9-15-2015. Ex- empt from OAL review and submitted to OAL for pnntmg only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38). § 492.5. Soil Management Report. (a) In order to reduce nm off and encow·age healthy plant growth, a soil management report shall be completed by the pro.iect applicant, or his/her des1gnee, as follows: (I) Submit soil samples to a laboratory for analysis and recommenda- tions. Page38.3 Register 2015. No 38, 9-18-2015 Item 12.b. - Page 15 § 492.6 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 (A) Soil sampling shall be conducted in accordance with laboratory protocol, including protocols regarding adequate sampling depth for the intended plants. (B) The soil analysis shall mclude: 1. soil texture; 2. infiltration rate determmed by laboratory test or soil texture infiltra- tion rate table; 3.pH; 4. total soluble salts; 5. sodium; 6. percent organic matier; and 7. recommendations. (C) In projects with multiple landscape mstallations (i.e. production home developments) a soil sampling rate of 1 in 7 lots or approximately 15% will satisfy this requirement. Large landscape projects shall sample at a rate eqmvalent to l m 7 lots. (2) The project applicant, or ]us/her designee, shall comply with one of the followmg: (A) If significant mass gradmg is not planned, the soil analysis report shall be submitted to the local agency as part of the Landscape Docwnen- tation Package; or (B) If s1gmficant mass grading is planned, the soil analysis report shall be submitted to the local agency as part of the Certificate of Completion (3) The soil analysis report shall be made available. in a timely manner, to the profess10nals prepanng the landscape design plans and migation design plans to make any necessary adjustments to the design plans. ( 4) The project applicant, or his/her de~ignee, shall submit documenta- tJon verifying implementation of soil analysis report recommendat10ns to the local agency with Certificate of Completion. NOTE Authority cited: Sect101165595, Government Code; and sections 11and30, Governor's Exec. Order No. 13-29-15 (April I, 2015). Reference· Section 65596. Government Code; and section 11, Governor's Exec. Order No B-29-15 (Apnl 1. 2015) HISTORY l. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code qect10n 11343.4 (Register 2009. No. 37). 2 Amendment of subsect10n (a )(I )(B). new subsection ( a)(l )(C) and amendment of NOTE filed 9-15-2015, operative 9-15-2015 Exempt from OAL review and submitted to OAL for prmtmg only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38). § 492.6. Landscape Design Plan. (a) For the efficient use of water, a landscape shall be carefully de- signed and planned for the intended function of the project. A landscape design plan meetmg the following design criteria shall be submitted as part of the Landscape Documentat10n Package. (1) Plant Matenal (A) Any plant may be selected for the landscape, providing the Esti- mated Total Water Use m the landscape area does not exceed the Maxi- mum Apphed Water Allowance. Methods to achieve water efficiency shall include one or more of the following: 1. protect10n and preservation of native species and natural vegetation; 2. selection of water-conserving plant, tree and turf species, especially local nal!ve plants: 3. select10n of plants based on local climate suitabihty, disease and pest resistance; 4. selection of trees based on applicable local tree ordinances or tree shading guidelines, and size at maturity as appropnate for the plantmg area; and 5. selection of plants from local and regional landscape program plant lists. 6. selection of plants from local Fuel Modificat10n Plan Guidelines. (B) Each hydrozone shall have plant materials with similar water use, with the exception ofhydrozones with p !ants of mixed water use, as spe- cified m Section 492.7(a)(2)(D) (C) Plants shall be selected and planted appropriately based upon the1r adaptability to the climatic, geologic, and topographical conditions of the project site. Methods to acluevc water efficiency shall include one or more of the following: l. use the Sunset Western Climate Zone System which takes into ac- count temperature, humidity, elevation. terrain, latitude, and varying de- grees of continental and marine influence on local climate; 2. recognize the horticultural attributes of plants (i.e., mature plant size, mvasive surface roots) to minimize damage to property or mfra- structure [ e.g , bmldmgs, sidewalks, power lines]; allow farad equate soil volume for healthy root growth; and 3. consider the solar orientat10n for plant placement to maximize sum- mer shade and winter solar gain. (D) Turfis not allowed on slopes greater than 25% where the toe of the slope is adjacent to an impenneable hardscape and where 25% means I foot of vertical elevation change for every 4 feet of horizontal length (rise divided by run x I 00 = slope percent). (E) High water use plants, characterized by a plant factor of0.7 to 1.0, are prohibited m street medians. (F) A landscape design plan for projects in fire--prone areas shall ad- dress fire safety and prevention. A defensible space or zone around a buildmg or structure is required per Public Resow·ces Code Section 4291 (a) and (b ). A void fire--prone plant matenals and lughly flammable mulches. Refer to the local Fuel Modification Plan guidelines. (G) 111e use of mvasive plant species, such as those listed by the California Invasive Plant Council. 1s strongly discouraged. (H) The architectural guidelines of a common interest development, which include commumty apartment projects, condommiums, planned developments, and stock cooperatives, shall not prohibit or mclude conditions that have the effect of prohibiting the use of low-water use plants as a group. (2) Water Features (A) Recirculating water systems shall be used for water features. (B) Where available, recycled water shall be used as a source for deco- rative water features (C) Surface area of a water feature shall be included 111 the high water use hydrozone area of the water budget calculation. (D) Pool and spa covers are lughly recommended. (3) Soil Preparation, Mulch and Amendments (A) Pnor to the planting of any matenals, compacted soils shall be transformed to a fnable condition On engineered slopes, only amended planting holes need meet this reqmrement. (B) Soil amendments shall be incorporated accordmg to recommenda- llons of the soil report and what is appropriate for the plants selected (see Section 492.5). ( C) For landscape installations, compost at a rate of a mmimwn of four cubic yards per 1,000 square feet of penneable area shall be incorporated to a depth of six inches into the soil. Soils with greater than 6% organic matter in the top 6 rnches of soil are exempt from adding compost and till mg. (D) A mm1mum three mch (3") layer of mulch shall be applied on all exposed soil surfaces of planting areas except m tmf areas, creeping or rootmg groundcovers, or direct seeding applications where mulch is con- traindicated. To provide habitat for beneficial insects and other wildlife, up to 5 % of the landscape area may be left without mulch. Designated mscct habitat must be mcluded 111 the landscape design plan as such. (E) Stabilizing mulchmg products shall be used on slopes that meet current engmeering standards. (F) The mulchmg portion of the seed/mulch slurry m h-ydro-seeded applications shall meet the mulching requirement. (G) Organic mulch materials made from recycled or post-consumer shall take precedence over morganic matenals or virgin forest products unless the recycled post-consumer orgamc products are not locally avail- able. Organic mulches are not reqmred where prohibited by local Fuel Modification Plan Guidelines or other applicable local ordinances. (b) The landscape design plan, at a minimum, shall: Page 38.4 Rcg1ster2015,No 38,9-18-2015 Item 12.b. - Page 16 Title 23 Department of Water Resources § 492.7 (1) delineate and label each hydrozone by number, letter, or other method; (2) identify each hydrozone as low, moderate, high water, or mixed water use. Temporarily migated areas of the landscape shall be mcluded in the low water use hydrozone for the water budget calculation; (3) identify recreation,al areas; (4) identify areas permanently and solely dedicated to edible plants; (5) identify areas imgated with recycled water; (6) identify type of mulch and applicatrnn depth; (7) identify soil amendments, type, and quantity; (8) identify type and surface area of water features; (9) identify hardscapes (pervious and non-pervious); (10) identify location, installat10n details, and 24-hour retention or m- filtrat1on capacity of any applicable stonnwater best management prac- tices that encourage on-site retention and mfiltration of stom1water. Proj6ct applicants shall refer to the local agency or regional Water Quali- ty Control Board for information on any applicable stormwater technical requirements. Stonnwater best management practices are encouraged in the landscape design plan and examples are provided m Section 492.16 ( 11) identify any applicable rain harvesting or catchment technologies as discussed 111 Sect10n 492.16 and their 24-hour retention or infiltrat10n capacity; (12) identify any applicable graywater discharge piping, system com- ponents and area(s) of distribution; (13) contam the following statement: "I have complied with the cnte- na of the ordinance and apphed them for the efficient use of water in the landscape design plan"'; and ( 14) bear tl1e signature of a licensed landscape arc hi lect, licensed land- scape contractor, or any other person authorized to design a landscape. (See Sections 5500.1, 5615, 5641. 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027 .5 of the Business and Professions Code, Sec- t10n 832.27 of Title 16 of the California Code of Regulations, and Sect10n 6721 of the Food and Agriculture Code.). NOTE Authonty ctted · Sec lion 6559 5. Government Code; and sections 11 and 30, Governor's Exec Order No B-29-15 (Aprill, 2015) Reference. Sechon 65596, Government Code; Section 1351, C1v1l Code, and secl!on 11, Governor's Exec Order No B-29-15 (April I, 2015). HISTORY 1 New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section 11343 4 (Register 2009, No 37) 2. Amendment of section and NOTE filed 9-15-2015; operative 9-15-2015 Ex- empt from OAL review and submitted to OAL for printing only pursuant !o Governor's Executive Order No. B-29-15 (4--1-2015) (Registcr2015, No 38) § 492.7. Irrigation Design Plan. (a) This sect1011 applies to landscaped areas reqmring permanent ir- rigation, not areas that require temporary irrigat10n solely for the plant establishment period. For the efficient use of water, an irrigation system shall meet all the requirements listed in this section and the manufactur- ers' recommendations. The imgat10n system and its related components shall be planned and designed to allow for proper installation, manage- ment, and mamtenanee. An migation design plan meeting the following design cnteria shall be submitted as part of the Landscape Documenta- tion Package. (I) System (A) Landscape water meters, defined as either a dedicated water ser- vice meter or pnvate submeter, shall be installed for all non-residential in·igatedlandscapes ofl,000 sq. ft. but not more than 5,000 sq.ft. (the lev- el at which Water Code 535 applies) and residential irrigated landscapes of 5,000 sq. ft. or greater. A landscape water meter may be either: l a customer service meter dedicated to landscape use provided by the local water purveyor; or 2. a privately owned meter or submeter. (B) AutomaLic irrigation controllers utilizmg either evapotranspira- tion or soil m01sture sensor data utilizing non-volatile memory shall be required for irrigation scheduling in all rrrigat10n systems. (C) If the water pressure is below or exceeds the recommended pres- sure of the specified irrigation devices, the mstallation of a pressure regu- lating device is required to ensure that the dynamic pressure at each enus- s10n device is withm the manufacturer's recommended pressure range for optimal perfonnance. 1 If the static pressure is above or below the required dynamic pres- sure of the migation system, pressure-regulating devices such as mlme pressure regulators, booster pumps, or other devices shall be mstalled to meet the required dynamic pressure of the migation system. 2. Static water pressure. dynamic or operating pressure, and flow read- ing of the water supply shall be measured at the point of connection. These pressure and flow measurements shall be conducted at the design stage. Iftl1e measurements are not available at the design stage, the mea- surements shall be conducted at installat10n. (D) Sensors (rain, freeze, wind, etc.), either integral or auxihaty, that suspend or alter imgation operation during unfavorable weather condi- tions shall be reqmred on all ungation systems, as appropriate for local climatic conditions. Imgation should be avoided during windy or freez- ing weather or during rain. (E) Manual shut-off valves (such as a gate valve, ball valve, or butter- fly valve) shall be reqmred, as close as possible to the pomt of connection of the water supply, to mml111ize water loss in case ofan emergency (such as a main lme break) or routine repair. (F) Back flow prevent10n devices shall be required to protect the water supply from contammat10n by the irrigation system. A project applicant shall refer to the applicable local agency code (i.e., public health) for additional backflow prevention requirements. (G) Flow sensors that detect high flow conditions created by system damage or malfunction are required for all on non-residential landscapes and residential landscapes of 5000 sq. ft. or larger. (H) Master shut-off valves are required on all projects except land- scapes that make use of technologies that allow for the individual control of spnnklers that are individually pressurized in a system equipped with low pressure shut down features. (I) The im gation system shall be designed to prevent runoff, low head dramage, overspray, or other similar conditions where inigation water flows onto non-targeted areas, such as adjacent property, non-imgated areas, hardscapes, roadways, or structures. (J) Relevant infommtlon from the soil management plan, such as s01! type and infiltration rate, shall be utilized when desigmng irrigat10n sys- tems (K) The design of the 1mgation system shall conform to the hydro- zones of the landscape design plan. (L) The migation system must be designed and installed to meet, at a mm1mum, the irrigation efficiency criteria as described in Section 492.4 regarding the Maximum Applied Water Allowance. (M) All imgation emission devices must meet the requirements set in the Ameiiean National Standards Institute (ANSI) standard, American Society of Agricultural and Biological Engineers'/Intemational Code Council's (ASABE/lCC) 802-2014 "Landscape Irrigation Spnnklcr and Enutter Standard, All spnnklcr heads installed in the landscape must doc- ument a distnbut1011 uniformity low quarter of 0.65 or higher using the protocol defined m ASABE/ICC 802-2014. (N) It 1s highly recommended tlmt the project applicant or local agency inqmre with the local water purveyor about peak water operating de- mands (on the water supply system) or water restrictions that may impact the effectiveness of the irrigation system. (0) In mulched plantmg areas, the use oflow voltl111e irrigation is re- qmred to maximize water infiltration into the root zone. (P) Sprinkler heads and other emission devices shall have matched precip1tat10n rates, unless otherwise directed by the manufactw·er's rec- ommendations (Q) Head to head coverage is recommended. However, sprinkler spac- ing shall be designed to achieve the highest possible distribution umfor- mity using the manufacturer's recommendations. (R) SwmgJomts or other riser-protect10n components are required on all risers subject to damage that are adjacent to hardscapes or 111 !ugh traf- fic areas of turfgrass. Page38.5 Register 2015, Ko 38, 9-18-2015 Item 12.b. - Page 17 § 492.8 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 (S) Check valves or anti-dram valves are required on all sprinkler heads where low pomt drainage could occur. (T) Areas less than ten ( l 0) feet in width in any direction shall be irri- gated with subsurface irrigation or other means that produces no runoff or overspray. (U) Overhead irrigation shall not be penmtted within 24 inches of any non-penneable surface. Allowable irriga1Ion within the setback from non-permeable surfaces may include dnp, drip line, or other low flow non-spray technology. The setback area may be planted or unplanted. The surfacmg of the setback may be mulch, gravel, or other porous mate- nal These restrictions may be modified if: 1. the landscape area is adjacent to penneable surfacing and no runoff occurs; or 2. the adjacent non-pcnncable smfaces are designed and constructed to drain entirely to landscapmg; or 3. the irrigation designer specifies an alternative design or technology, as part of the Landscape Documentation Package and clearly demon- strates stnct adherence to irrigation system design criteria m Sect10n 492.7 (a)(l)(l). Prevention ofoverspray and nmoffmust be confirmed during the imgat10n audit. (V) Slopes greater than 25% shall not be irrigated with an irngat1011 system with a application rate exceedmg 0.75 inches per hour. Tlus re- striction may be modified if the landscape designer specifies an alterna- tive design or technology, as part of the Landscape Documentation Pack- age, and clearly demonstrates no runoff or erosion will occur. Prevention of runoff and erosion must be confirmed dming the migation audit. (2) Hydrozone (A) Each valve shall migate a hydrozone with similar site, slope, sun exposure, soil conditions, and plant materials with similar water use. (B) Sprmkler heads and other emission devices shall be selected based on what is appropriate for the plant type within that hydrozonc. (C) Where feasible, trees shall be placed on separate valves from shmbs, groundcovers, and tmf to facilitate the appropnate migation of trees. The mature size and extent of the root zone shall be considered when des1gnmg irrigation for the tree. (D) Individual hydrozones that mix plants of moderate and low water use, or moderate and high water use, may be allowed if 1. plant factor calculation 1s based on the proport10ns of the respective plant water uses and their plant factor; or 2. the plant factor of the lugher water using plant is used for calcula- tions. (E) Individual hydrozones that mix lugh and low water use plants shall not be pem1itted. (F) On the landscape design plan and migation design plan, hydrozone areas shall be designated by number, letter, or other designat10n. On the imgation design plan, designate the areas 1mgated by each valve, and as- sign a number to each valve. Use this valve number in the Hydrozone In- fonnation Table (see Appendix B Sect10n A). This table can also assist with the irrigation audit and programming the controller. (b) Tl1c imgation design plan, at a minimmn, shall contaill" ( 1) locat10n and size of separate water meters for landscape; (2) locat10n, type and size of all components of the irrigation system, including controllers, mam and lateral Imes, valves, sprinkler heads, moisture sens mg deVJces, rain switches. qrnck couplers, pressure regula- tors, and backflow prevent10n devices; (3) static water pressure at the point of connection to the public water supply; (4) flow rate (gallons per mmute), apphcatton rate (inches per hour), and design operating pressure (pressme per square inch) for each station; (5) recycled water irrigation systems as specified m Section 492.14, (6) the following statement: "I have complied with the cntena of the ordinance and applied them accordmgly for the efficient use of water in the imgation design plan"; and (7) the signature of a licensed landscape architect, certified irrigation designer. hcensed landscape contractor, or any other person authorized to design an irrigation system. (See Sections 5500.1, 5615, 5641, 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701. 7027.5 of the Busmess and Professions Code, Section 832.27 ofT1tlel 6 of the California Code of Regulations, and Section 6721 of the Food and Agricultural Code.) NOTE. Authority cited Section 65595. Government Code; and sect10ns 11 and 30. Governor's Exec. Order No. B-29-15 (Apnl 1, 2015). Referen~e. Section 65596, Government Code; and sect1011 11. Governor's Exec. Order No B-29-15 (April 1, 2015) HISTORY 1. New sect10n filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No. 37) 2. Amendment of section and NOTE filed 9-15-2015; operative 9-15-2015 Ex- empt from OAL review and submitted to OAL for pnnting only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register2015, No. 38) § 492.8. Grading Design Plan. (a) For the efficient use of water, grading of a project site shall be de- signed to minimize soil erosion, runoff, and water waste. A grading plan shall be submitted as part of the Landscape Docmnentation Package. A comprehensive gradmg plan prepared by ·a civil engineer for other local agency pe1mits satisfies this requirement. (1) The project applicant shall submit a landscape grading plan that in- dicates finished configurations and elevations of the landscape area in- cluding· (A) height of graded slopes; (B) drainage patterns; (C) pad elevations; (D) finish grade; and (E) stormwater retent10n improvements. if apphcable. (2) To prevent excessive erosion and runoff, 1t ts highly recommended that project app!Jcants: (A) grade so that all irrigation and normal rainfall remams w1thm prop- erty Imes and does not drain on to non-permeable hardscapes; (B) avoid disruption of natural dramage patterns and undisturbed soil; and (C) avoid soil compaction in landscape areas. (3) The grading design plan shall contain the following statement: "I have complied with the criteria of the ordinance and apphed them accord- ingly for the efficient use of water in the grading design plan" and shall bear the signature of a licensed professional as authonzed by law. NOTE Authority cited Section 65595, Government Code Reference. Sect1011 65596. Government Code. HISTORY 1. New sect10n filed 9-10-2009. operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No. 37) § 492.9. Certificate of Completion. (a) The Certificate of Completion (see Appendix C for a sample certif- icate) shall mclude the following six (6) elements: (1) project mfonnation sheet that contains: (A) date; (B) project name; (C) project applicant name, telephone, and mailing address; (D) project address and location; and (E) property owner name, telephone, and mailing address; (2) certification by either the signer of the landscape design plan, the signer of the migat10n design plan, or the licensed landscape contractor that the landscape project bas been installed per the approved Landscape Docmnentation Package; (A) where there have been significant changes made in the field during conslmction, these "as-bmlt" or record drawmgs shall be included with the certification; (B) A diagram of the irrigation plan showmg hydrozones shall be kept with the irrigation controller for subsequent management purposes. (3) imgation scheduling parameters used to set the controller (see Sec- tion 492 10); (4) landscape and irrigat10n maintenance schedule (see Section 492.11); (5) irngation audit report (see Section 492.12); and Page38.6 Registet 2015, No 38. 9-18-2015 Item 12.b. - Page 18 Title 23 Department of \Vater Resources § 492.13 (6) soil analysis report, if not submitted with Landscape Docwnenta- t10n Package, and documentation verifymg 1mplementat1on of sot! report recommendations (sec Section 492.5). (b) The project applicant shall: (I) subnut the signed Certificate of Completion to the local agency for review; (2) ensure that copies of the approved Certificate of Completion are submitted to the local water purveyor and property owner or his or her designee. (c) The local agency shall: ( 1) receive the signed Certificate of Completion from the project appli- cant; (2) approve or deny the Certificate ofComplet10n. If the Certificate of Completion is denied, the local agency shall provide mformat10n to the pro.1cct applicant regardmg reapplication, appeal, or other assistance. Non. Authority cited Section 65595. Government Code, and sect10ns 11 and 30, Governor's Exec Order No. B-29-15 (Apnl 1, 2015). Reference· Section 65596, Government Code; and secl!on 11, Governor's Exec. Order No. B-29-15 (Apnl 1, 2015) H!S10RY J. New section filed 9-10-2009: operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No. 37). 2 New subsccl!on (a)(2)(B) and amendment ofNOTE filed 9-15-2015· operal!ve 9-15-2015. Exempt from OAL revww and subnutted to OAL for pr:n1mg only pursuant to Governor's Executive Order No. B-29-15' (4-1-2015) (Register 2015, No 38). § 492.10. Irrigation Scheduling. (a) For the efficient use of water, all imgat10n schedules shall be devel- oped, managed, and evaluated to utilize the mmimum amount of water required to mamtam plant health. Imgation schedules shall meet the fol- lowmg criteria: (I) Irrigation scheduling shall be regulated by automatic imgation controllers. (2) Overhead migalton shall be scheduled between 8:00 p.m. and 1 O·OO a.m. unless weather conditions prevent it. If allowable hours of Ir- rigation differ from the local water purveyor, the stricter ofil1e two shall apply Operation of the migation system outside the normal watenng wmdow 1s allowed for auditing and system maintenance. (3) For implemcntat10n of the imgation schedule, particular attention must be paid to Irrigation run times, cil1!ssion device, flow rate, and cur- rent reference evapotranspiration, so that applied water meets the Esti- mated Total Water Use Total annual applied water shall be less than or equal to Maximum Applied Water Allowance (MAW A). Actual nnga- tion schedules shall be regulated by automatic imgat10n controllers us~ng current reference evapotransp1rat10n data (e.g., CIMIS) or soil moisture sensor data ( 4) Parameters used to set the automatic controller shall be developed and submitted for each of the following: (A) the plant establishment penod; (B) the established landscape; and (C) tempormily Irrigated areas. (5) Each irrigation schedule shall consider for each station all of the following that apply: (A) irrigation mterval (days between Irrigation); (B) irrigation nm times (hours or minutes per 1mgation event to avoid rw10ff); (C) number of cycle starts reqmred for each irrigation event to av01d nm off: (D) amount of applied water scheduled to be applied on a monthly ba- sis; (E) application rate setting; (F) root depth settmg; (G) plant type settmg; (H) soil type; (I) slope factor settmg; (J) shade factor settmg; and (K) imgation uniformity or efficiency setting. NOTE Authority cited: Sect10n 65595, Government Code. Reference: Sect10n 65596, Government Code. HISTORY 1 New sect10n filed 9-10-2099, operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No 37) § 492.11. Landscape and Irrigation Maintenance Schedule. (a) Landscapes shall be maintained to ensure water use efficiency. A regular maintenance schedule shall be subnutted with the Certificate of Complet10n. (b) A regular maintenance schedule shall include, but not be limited to, routme ~nspection; auditing. adjustment and repair of the imgat1on system and its components; aeratmg and dethatching turf areas; topdress- mg with compost, replemshing mulch; fert1hzing, pruning; weeding in all landscape areas, and removing obstructions to en11ss10n devices. Op- eration of the imgation system outside the nomml watenng wmdow 1s allowed for auditing and system maintenance. . ( c) Repair of all irrigation equipment shall be done with the originally mstalled components or their equivalents or with components with great- er efficiency. (d) A pro.1cct apphcant is encouraged to implement established land- scape mdustry sustamable Best Practices for all landscape mamtenance activities. NOTE A~thonty cited· Section 65595, Government Code, and section5 11 and 30, Governor s Exec. Order No. B-29-15 (Apnl l, 2015) Reference. Sect10n 65596, Government Code; and section 11, Governor's Exec. Order No. B-29-15 (Apnl 1, 2015). HISTORY 1. New section filed 9-10-2009; operatn e 9-10-2009 pursuant to Government Code section 11343 4 (Register 2009, No. 37). - 2. Amendment of section and NOTE filed 9-15-2015; operative 9-15-2015. E~­ empt from OAL review and submitted to OAL for pnntmg only pursuant to Governor'sExceutlveOrdCJ No. B-29-15 (4-1-2015) (Registcr2015, No.38) § 492.12. Irrigation Audit, Irrigation Survey, and Irrigation Water Use Analysis. (a) All landscape migat10n audits shall be conducted by a local agency landscape irrigation auditor or a tlmd party certified landscape 1mgat1on auditor. Landscape audits shall not be conducted by the person who de- signed the landscape or installed the landscape. (b) In large projects or pro.1ects with multiple landscape mstallations (i.e. production home developments) an auditing rate of I m 7 lots or approximately 15% will satisfy tlus requirement ( c) For new construction and rehabilitated landscape projects installed after December 1, 2015, as described in Sectmn 490.1 · (I) the project applicant shall submit an migation audit report with the Certificate ofCompletmn to the local agency that may rnclude, but is not hm1ted to: inspect10n, system tune-up, system test with distribut10n uni- fonmty, reporting overspray or mn offtliat causes overland flow. and preparation of an irrigation schedule, including configuring img~tion controllers with application rate, soil types, plant factors. slope, exposure and any other factors necessary for accurate programming; (2) the local agency shall admimster programs that may mclude, but not be limited to, inigation water use analysis, imgation audits, and ir- rigation surveys for compliance with the Maximum Apphed Water Al- lowance. NOTE Authority cited· Section 65595. Government Code· andsect10m, 11 and30 Governor'> Exec Order No. B-29-15 (Apnl I, 2015) Reference· Section 65596; Government Code, and section 11, Governor's Exec. Order No. B-29-15 (Apnl I, 2015). HISTORY 1. New sect10n filed 9-10-2009, operative 9-10-2009 pursuant to Government Code secl!on 11343.4 (Register 2009, No. 37) 2. Amendment ofsect10n and NOTE filed 9-15-2015; operative 9-15-2015. Ex- empt from OAL review and submllted to OAL for pnntmg only pursuant to Governor's Executive Order No B-29-15 (4-1-2015) (Reg1ster2015, No 38). § 492.13. Irrigation Efficiency. (a) For the purpose of determining Estimated Total Water Use, aver- age migatmn efficiency is assumed to be 0. 7 5 for overhead spray devices and 0.81 for dnp system devices. NOTE· Authority cited Section 65595, Government Code: and secllons 11 and 30, Governor's Exec. Order No. B-29-15 (Apnl 1, 2015) Reference: Sect10n 65596, Page38.7 Register 2015, No 38, 9-18-2015 Item 12.b. - Page 19 § 492.14 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 Government Code, and sect10n 11, Governor's Exec. Order No B-29-15 (April 1. 2015). HISTORY I. New section filed 9-10-2009, operative 9-10-2009 pursuant to Government Code section 11343 4 (Register 2009, No. 37) 2. Amendment of section and NOTE filed 9-15-2015; operative 9-15-2015 Ex- empt from OAL review and submitted to OAL for pnntmg only pursuant to Governor'sExecutJYe Order No B-29-15 (4-1-2015) (Register2015, No. 38). § 492.14. Recycled Water. (a) The installat10n ofrecycled water migation systems shall allow for the current and future use of recycled water. (b) All recycled water irrigation systems shall be designed and oper- ated in accordance with all applicable local and State laws. ( c) Landscapes using recycled water are considered Special Land- scape Areas. The ET Adjustment Factor for new and existing (non-reha- bilttated) Special Landscape Areas shall not exceed 1.0. NOTE Authonty cited: Sect10n 65595, Government Code; and sect10ns 11 and 30, Governor's Exec Order No. B-29-15 (Apnl l, 2015) Reference: Section 65596. Government Code; and section 11, Governor's Exec Order No B-29-15 (April 1, 2015) HISTORY I. New sccuon filed 9-10-2009, operative 9-10-2009 pursuant to Government Code sectron 11343.4 (Register 2009, No. 37) 2. Amendment of section and NOTE filed 9-15-2015; opcratlve 9-15-2015 Ex- empt from OAL review and submitted to OAL for printing only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Registcr2015, No. 38). § 492.15. Graywater Systems. (a) G:raywater systems promote the efficient use of water and are en- couraged to assist in on-site landscape irngation. All graywater systems shall conform to the Cahforma Plumbing Code (Title 24, Part 5, Chapter 16) and any apphcable local ordinance standards. Refer to§ 490.1 (d) for the applicability of tlus ordmance to landscape areas less than 2,500 square feet with the Estimated Total Water Use met entirely by graywa- ter. NOTE Authority cited Section 65595, Government Code; and sections 11 and 30, Governor's Exec Order No. B-29-15 (Ap11l 1, 2015) Reference: Section 65596, Government Code; and section 11, Governor's Exec 01der No. B-29-15 (Apnl 1, 2015) HISTORY 1. New sect10n filed 9-10-2009; operative 9-10-2009 putsuant to Government Code section 11343.4 (Register 2009, No 37). 2. Renwnbcrmg of fom1er scct10n 492 15 to 492 16. new section 492.15 and amendment of NOTE filed 9-15-2015; operative 9-15-2015 Exempt from OAL review and submitted to OAL for pnntmg only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38). § 492.16. Stormwater Management and Rainwater Retention. (a) Stonnwater management practices mmimize runoff and mcrease infiltration which recharges groundwater and improves water quality. Implementmg storrnwater best management practices into the landscape and grading design plans to minimize runoff and to mcrease on-site ram- water retention and infiltration are encouraged. (b) Project applicants shall refer to the local agency or Regional Water Quality Control Board for information on any applicable stormwatcr techmcal requirements. ( c) All planted landscape areas are reqmred to have friable soil to max- imize water retention and mfiltration. Refer to § 492.6(a)(3). (d) It is strongly recommended that landscape areas be designed for capture and infiltration capacity that is sufficient to prevent runoff from impervious surfaces (i.e. roof and paved areas) from either: the one inch, 24-hour rain event or (2) the 85th percentile, 24-hour rain event, and/or addit10nal capacity as reqmred by any applicable local, regional, state or federal regulation. (e) Itis recommended that storm water projects incorporate any of the following elements to improve on-site stonn water and dry weather run- off capture and use: • Grade impervious surfaces, such as driveways. during construc- tion to drain to vegetated areas. • Minimize the area of impervious surfaces such as paved areas, roof and concrete driveways. • Incorporate pervious or porous surfaces (e.g., gravel, permeable pavers or blocks, pervious or porous concrete) that minimize run- off. • Direct runoff from paved surfaces and roof areas into plantmg beds or landscaped areas to maximize site water capture and reuse. • Incorporate rain gardens, cisterns, and other rain harvesting or catchment systems. • Incorporate infiltrat10n beds, swales, basms and drywells to cap- ture storm water and dry weather runoff and mcrease percolation into the soil. • Consider constructed wetlands and ponds that retam water, equal- ize excess flow, and filter pollutants. NOTE· Authonty cited. Sect10n 65595, Government Code, and sections 11 and 30, Governor's Exec Order No. B-29-15 (Apnl 1, 2015). Reference. Sect10n 65596, Government Code, and section 11, Governor's Exec. Order No B-29-15 (Apnl 1, 2015). llrSTORY I. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No. 37). 2. Rcnumbermg of fonner section 492.16 to section 492.17 and renumbering of former section 492.15 to new sect10n 492.16, mcluding amendment of section heading, section and NOTE, filed 9-15-2015: operative 9-15-2015. Exempt from OAL review and submitted to OAL for pnntmg only pursuant to Gover- nor's Executive Order No. B-29-15 (4-1-2015) (ReglSler 2015, No. 38). § 492.17. Public Education. (a) Publications. Education is a critical component to promote the effi- cient use of water in landscapes. The use of appropriate principles of de- sign, mstallation, management and maintenance that save water ts en- couraged in the community. - (1) A local agency or water supplier/purveyor shall provide mforma- tion to owners ofpenmtted renovations and new, smgle-family residen- tial homes regarding the design, installation, management, and mainte- nance of water efficient landscapes based on a water budget. (b) Model Homes. All model homes that are landscaped shall use signs and written infommtion to demonstrnte the principles of water efficient landscapes described m this ordinance. ( 1) Signs shall be used to identify the model as an example of a waler efficient landscape featuring elements such as hydrozones, migation equipment, and others that contnbute to the overall water efficient theme. Signage shall include information about the site wateruse as designed per the local ordinance; specrfy who designed and installed the water effi- cient landscape; and demonstrate low water use approaches to landscap- ing such as using native plants, graywater systems, and ramwater catch- ment systems. (2) Information shall be provided about desigmng, installing, manag- mg, and maintaming water efficient landscapes. NOTE· Authority cited: Section 65595, Government Code; and sect10ns 11 and30, Governor's Exec. Order No B-29-15 (Apnl 1, 2015) Reference. Sect10n 65596, Government Code; and section 11, Governor's Exec. Order No. B-29-15 (Apnl l, 2015). HISTORY 1 New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009. No. 37). 2. Renumbering of former sect10n 492 17 to new section 492.18 and renumbering of former sect10n 492.16 to new section 492.17, includmg amendment ofsec- uon and NOTE, filed 9-15-2015; operative 9-15-2015. Exempt from OAL re- view and submitted to OAL forpnnting only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No 38). § 492.18. Environmental Review. (a) The local agency must comply with the Caltfomia Environmental Quality Act (CEQA), as appropnate. NOTE. Authonty cited: Section 21082. Pubhc Resources Code: and sect10ns 11 and30, Governor's Exec Order No B-29-15 (April 1,2015) Reference· Sect10ns 21080 and 21082, Pub he Resources Code, and section 11, Governor's Exec. Order No B-29-15 (April 1. 2015). HISTORY 1. Renumbermg of former section 492 l 7 to new secuon 492.18. mcludmg amend- ment ofNOTE, filed 9-15-2015; operauve 9-15-2015 Exempt from OAL re- view and subm!lled to OAL forprmtmg only pursuant to Governor's Execunve Order No. B-29-15 (4-1-2015) (Register 2015. No 38). Page38.8 Reg1ste1 2015, No 38, 9-i8-20!5 Item 12.b. - Page 20 Title 23 Department of Water Resources §495 § 493. Provisions for Existing Landscapes. (a) A local agency may by mutual agreement, designate another agency, such as a water purveyor, to implement some or all of the require- ments contained in this ordmance. Local agencies may collaborate with water purveyors to define each entity's specific responsibilities relating to this ordinance. NOTE Authority cited Seel!on 65595. Government Code, and scct10ns 11 and 30, Governor's Exec. Order No B-29-15 (April I, 2015). Reference: Section 65596, Government Code: and section 11, Governor's Exec. Order No. B-29-15 (Apnl 1, 2015). HISTORY I. New sect10n filed 7-31-92; operative 7-31-92 (Reg1ste1 92, No 32). 2 Repealer and new sectmn and amendment of NOTE filed 9-10-2009, operative 9-10-2009 pursuant to Government Code section 11343 4 (Register 2009. No. 37). 3. Amendment of section and NOTE filed 9-15-2015, operative 9-15-2015. Ex- empt from OAL review and submitted to OAL for prmtrng only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Reg1ster2015, No. 38) § 493.1. Irrigation Audit, Irrigation Survey, and Irrigation Water Use Analysis. (a) This sect10n, 493.1, shall apply to all existing landscapes that were installed before December 1, 2015 and are over one acre in size. (1) For all landscapes m 493. l (a) that have a water meter, the local agency shall admimsterprograms that may mclude, but not be lrmited to, iITigation water usc analyses, migat1on surveys. and Irrigation audits to evaluate water use and provide recommendations as necessary to reduce landscape waterusc to a level that does not exceed the Maxunum Applied Water Allowance for existing landscapes. The Maximum Applied Water Allowance for ex1stmg landscapes shall be calculated as: MA \VA= (0.8) (ETo) (LA) (0.62). (2) For all landscapes m 493.1 (a), that do not have a meter, the local agency shall admimsterprograms that may mclude, but not be limited to, iingation surveys and 1ITigat1on audits to evaluate water use and provide recommendations as necessary in order to prevent water waste. (b) All landscape irrigation audits shall be conducted by a certified landscape irrigat10n auditor. NOTE. Authonty cited· Section 65595, Government Code; and sections 11 and 30, Governor's Exec. Order No. B-29-15 (Apnl 1, 2015). Reference: SectJon 65596, Government Code, and section 11, Governor's Exec. Order No. B-29-15 (Apnl I. 2015). HISTORY I. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code sect10n 11343.4 (Register 2009, No 37) 2 Amendment of subsection (a) and Norn filed 9-15-2015; operative 9-15-2015. Exempt from OAL revww and submitted to OAL for printing only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38). § 493.2. Water Waste Prever:ition. (a) Local agencies shall prevent water waste resultmg from mefficient landscape irrigat10n by prohibiting runoff from leaving the target land- scape due to low head dramage, overspray, or other similar conditions where water flows onto adjacent property, non-irrigated areas, walks, roadways, parkmg lots. or structures. Penalties for violation of these pro- hibitions shall be established locally (b) Restrictions regarding overspray and runoff may be modified if: (1) the landscape area 1s adjacent to permeable surfacing and no runoff occurs; or (2) the adjacent non-pe1meable surfaces are designed and constructed to drain entirely to landscaping. NOTE Authority cited: Sechon 65594, Government Code Reference: Section 65596, Government Code HISTORY 1. New section filed 9-10-2009; opernt1ve 9-10-2009 pursuant to Government Code section 11343 4 (Register 2009, No 37) § 494. Effective Precipitation. (a) A local agency may consider Effective Precipitation (25% ofannu- al precipitation) in tracking wateruse and may use the following equation to calculate Maximum Applied Water Allowance· MA WA= (ETo -Eppt) (0.62) [(0.55 x LA)+ (0.45 x SLA)] for resi- dential areas. MA WA= (ETo--EPPT) (0.62) [(0.45 x LA)+ (0.55 x SLA)] for non- residential areas. NOTE. Authority Cited Section 65595. Government Code; and sections 11 and 30. Governor's Exec Order No. B-29-15 (April 1. 2015). Reference· Section 65596, Government Code. and section 11, Governor· s Exec Order No. B-29-15 (Apnl 1, 2015) HISTORY 1 Repealer and new section, new NOTE and new Appendices A-C filed 9-10-2009: operative 9-10-2009 pursuant to Government Code section 11343.4 (Reg1ste1 2009, No. 37). 2 Amendment of section and NOTE filed 9-15-2015, operative 9-15-2015 Ex- empt from OAL reY1ew and subnutted to OAL for printmg only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015)(Register2015, No. 38). § 495. Reporting. (a) Local agencies shall rep01t on implementation and enforcement by December 31, 2015. Local agencies responsible for admimstcring indi- vidual ordinances shall report on therr updated ordmance, while those agencies developing a regional ordmance shall report on their existing ordinance. Those agencies craftmg a regional ordinances shall also re- port on their new ordinance by March 1, 2016. Subsequently, rep01ting for all agencies will be due by January 31st of each year Reports shall be submitted to the Department of Water Resources. (b) Local agencies are to address the following: (1) State whether you are adopting a single agency ordmance or a re- gional agency alliance ordinance, and the date of adoption or anticipated date of adoption (2) Define the reportmg penod. The reporting period shall commence on December 1, 2015 and the end on December 28, 2015. For local agen- cies crafting regional ordinances with other agencies, there shall be an additional reporting period commencmg on February 1, 2016 and ending on February 28, 2016. In subsequent years, all local agency reporting will be for the calendar year. (3) State ifusing a locally modified Water Efficient Landscape Ordi- nance (WELO) or the MWELO. Ifusmg a locally modified WELO, how 1s it different than MWELO, is 1t at least as efficient as MWELO, and are there any exemptions specified? (4) State the entity responsible for implementing the ordinance. (5) State number and types of projects subject to the ordmance during the specified repo1ting period. (6) State the total area (in square feet or acres) subject to the ordinance over the reporting period, if available. (7) Provide the number of new housing starts, new commercial proj- ects, and landscape retrofits dunng the reporting period. (8) Descnbe the procedure for review of projects subject lo the ordi- nance. (9) Describe actions taken lo verify compliance. ls a plan check per- fonned; if so. by what entity? ls a site inspection performed; 1f so, by what entity? Is a post-mstallation audit required; if so, by whom? (10) Descnbe enforcement measures. (11) Explain challenges to unplementing and enforcing the ordinance. ( 12) Describe educational and other needs to properly apply the ordi- nance. NOTE: Authonty cited: Section 65595, Government Code; and sect10ns 11 and30, Governor's Exec. Order No. B-29-15 (Apnl I, 2015). Reference: Section 65596, Government Code; and sect10n 11, Governor's Exec. Order No. B-29-15 (Apnl I, 2015). HISTORY 1. New section filed 9-15-2015, operattve9-15-2015 Exemptfiom OALreview and submitted to OAL forpnntmg only pursuant to Governor's Executive Order No B-29-15 (4-1-2015) (Reg1ster2015. No. 38) Forpriorlustory, see Regis- ter 2009, No 37. Page38.9 Register 2015, No 38, 9-18-2015 Item 12.b. - Page 21 §495 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 Appendix A. Reference Evapotranspiration {ETo) Table Appendix A -Reference Evapotranspiration <ET01 Table* Annual Countv and City Jan Feb Mar Apr Mav Jun Jul Am! Seo Oct Nov Dec ETo ALAMEDA Fremont 1.5 1.9 3.4 4.7 5.4 6.3 6.7 6.0 4.5 3.4 1.8 1.5 47.0 Livermore 1.2 1.5 2.9 4.4 5.9 6.6 7.4 6.4 5.3 3.2 1.5 0.9 47.2 Oakland 1.5 1.5 2.8 3.9 5.1 5.3 6.0 5.5 4.8 3.1 1.4 0.9 41.8 Oakland Foothills l.l 1.4 2.7 3.7 5.1 6.4 5.8 4.9 3.6 2.6 1.4 1.0 39.6 Pleasanton 0.8 1.5 2.9 4.4 5.6 6.7 7.4 6.4 4.7 3.3 1.5 1.0 46.2 Union City 1.4 1.8 3.1 4.2 5.4 5.9 6.4 5.7 4.4 3.1 1.5 1.2 44.2 ALPINE Markleeville 0.7 0.9 2.0 3.5 5.0 6.1 7.3 6.4 4.4 2.6 l.2 0.5 40.6 AMADOR Jackson 1.2 1.5 2.8 4.4 6.0 7.2 7.9 7.2 5.3 3.2 1.4 0.9 48.9 Shanandoah Valley 1.0 1.7 2.9 4.4 5.6 6.8 7.9 7.1 5.2 36 1.7 1.0 48.8 BUTTE Chico 1.2 1.8 2.9 4.7 6.1 7.4 8.5 7.3 5.4 3.7 1.7 1.0 51.7 Durham 1.1 1.8 3.2 5.0 6.5 7.4 7.8 6.9 5.3 3.6 1.7 1.0 51.l Gridley 1.2 1.8 3.0 4.7 6.1 7.7 8.5 7.1 5.4 3.7 1.7 1.0 51.9 Oroville l.2 L7 2.8 4.7 6.1 7.6 8.5 7.3 5.3 3.7 1.7 1.0 51.5 CALAVERAS San Andreas 1.2 1.5 2.8 4.4 6.0 7.3 7.9 7.0 5.3 3.2 1.4 0.7 48.8 COLUSA Colusa 1.0 1.7 3.4 5.0 6.4 7.6 8.3 7.2 5.4 3.8 1.8 1.1 52.8 Williams 1.2 1.7 2.9 4.5 6.1 7.2 8.5 7.3 ,5.3 3.4 1.6 1.0 50.8 CONTRA COSTA Brentwood 1.0 1.5 2.9 4.5 6.l 7.1 7.9 6.7 5.2 3.2 1.4 0.7 48.3 Concord 1.1 1.4 2.4 4.0 5.5 5.9 7.0 6.0 4.8 3.2 1.3 0.7 43.4 Courtland 0.9 1.5 2.9 4.4 6.1 6.9 7.9 6.7 5.3 3.2 1.4 0.7 48.0 Martinez 1.2 1.4 2.4 3.9 5.3 5.6 6.7 5.6 4.7 3.1 1.2 0.7 41.8 Moraga 1.2 1.5 3.4 4.2 55 6.1 6.7 5.9 4.6 3.2 1.6 1.0 44.9 Pittsburg 1.0 1.5 2.8 4.1 56 6.4 7.4 6.4 5.0 3.2 1.3 0.7 45.4 Walnut Creek 0.8 1.5 2.9 4.4 5.6 6.7 7.4 6.4 4.7 3.3 1.5 1.0 46.2 DEL NORTE Crescent City 0.5 0.9 20 3.0 3.7 3.5 4.3 3.7 3.0 2.0 0.9 0.5 27.7 ELDORADO Camino 0.9 1.7 2.5 3.9 5.9 7.2 7.8 6.8 5.1 3.1 1.5 0.9 47.3 FRESNO Clovis 1.0 1.5 3.2 4.8 6.4 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.4 Coalinga 1.2 1.7 3.1 4.6 6.2 72 8.5 73 5.3 3.4 1.6 0.7 50.9 Firebaugh 1.0 1.8 3.7 5.7 7.3 8.1 8.2 7.2 5.5 3.9 2.0 LI 55.4 FivePoints 1.3 2.0 40 6.1 7.7 8.5 8.7 8.0 6.2 4.5 24 1.2 60.4 Fresno 0.9 1.7 ...... .J • .J 4.8 6.7 7.8 8.4 7.1 5.2 3.2 1.4 0.6 51.1 Fresno State 0.9 1.6 3.2 5.2 7.0 8.0 8.7 7.6 5.4 3.6 1.7 0.9 53.7 Friant 1.2 1.5 3.1 4.7 6.4 77 8.5 7.3 5.3 3.4 1.4 0.7 51.3 Kerman 0.9 1.5 3.2 4.8 6.6 7.7 8.4 7.2 5.3 3.4 1.4 0.7 51.2 Kmgsburg 1.0 1.5 3.4 4.8 6.6 7.7 8.4 7.2 5.3 3.4 1.4 0.7 51.6 Mendota 1.5 2.5 4.6 6.2 7.9 8.6 8.8 7.5 5.9 4.5 2.4 1.5 61.7 Orange Cove 1.2 1.9 3.5 4.7 7.4 85 8.9 7.9 5.9 3.7 1.8 1.2 56.7 Panoche 1.1 2.0 4.0 5.6 7.8 8.5 8.3 7.3 5.6 3.9 1.8 1.2 57.2 Parlier 1 0 1.9 3.6 5.2 6.8 7.6 8.1 7.0 5.1 3.4 1.7 0.9 52.0 Page38.10 Reg1ster2015,No 38, 9-18-2015 Item 12.b. - Page 22 Title 23 Depa11ment of Water Resources § 495 Appendix A -Reference Evapotranspiration (ETo Table* Annual Countv and City Jan Feb Mar Apr May Jun Jul AU!! Sep Oct Nov Dec ETo FRESNO Reedley LI 1.5 3.2 4.7 6.4 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.3 Westlands 0.9 1.7 3.8 6.3 8.0 8.6 8.6 7.8 5.9 4.3 2.1 1.1 58.8 GLENN Orland 1.1 1.8 3.4 5.0 6.4 7.5 7.9 6.7 5.3 3.9 1.8 1.4 52.l Willows 1.2 1.7 2.9 4.7 6.1 7.2 8.5 7.3 5.3 3.6 1.7 1.0 51.3 HUMBOLDT Eureka 0.5 l.l 2.0 3.0 3.7 3.7 3.7 3.7 3.0 2.0 0.9 0.5 27.5 Ferndale 0.5 1.1 2.0 3.0 3.7 3.7 3.7 3.7 3.0 2.0 0.9 0.5 27.5 Garberville 0.6 1.2 2.2 3.1 4.5 5.0 5.5 4.9 3.8 2.4 1.0 0.7 34.9 Hoopa 0.5 1.1 2.1 3.0 4.4 5.4 6.1 5.1 3.8 2.4 0.9 0.7 35.6 IMPERIAL Brawley 2.8 3.8 5.9 8.0 10.4 11.5 11.7 10.0 8.4 6.2 3.5 2.1 84.2 Calipatria/Mulberry 2.4 3.2 5.1 6.8 8.6 9.2 9.2 8.6 7.0 5.2 3.1 2.3 70.7 El Centro 2.7 3.5 5.6 7.9 IO.I 11.1 11.6 9.5 8.3 6.1 3.3 2.0 81.7 Holtville 2.8 3.8 5.9 7.9 10.4 11.6 12.0 10.0 8.6 6.2 3.5 2.1 84.7 Melo land 2.5 3.2 5.5 7.5 8.9 9.2 9.0 8.5 6.8 5.3 3.1 2.2 71.6 Palo Verde II 2.5 3.3 5.7 6.9 8.5 8.9 8.6 7.9 6.2 4.5 2.9 2.3 68.2 Seeley 2.7 3.5 5.9 7.7 9.7 10.l 9.3 8.3 6.9 5.5 3.4 2.2 75.4 Westmoreland 2.4 3.3 5.3 6.9 8.7 9.6 9.6 8.7 6.9 5.0 3.0 2.2 71.4 Yuma 2.5 3.4 5.3 6.9 8.7 9.6 9.6 8.7 6.9 5.0 3.0 2.2 71.6 INYO Bishop 1.7 2.7 4.8 6.7 8.2 10.9 7.4 9.6 7.4 4.8 2.5 1.6 68.3 Death Valley Jct 2.2 3.3 5.4 7.7 9.8 11.1 11.4 10.l 8.3 5.4 2.9 1.7 79.l Independence 1.7 2.7 3.4 6.6 8.5 9.5 9.8 8.5 7.1 3.9 2.0 1.5 65.2 Lower Haiwee Res. 1.8 2.7 4.4 7.1 8.5 9.5 9.8 8.5 7.1 4.2 2.6 1.5 67.6 Oasis 2.7 2.8 5.9 8.0 10.4 11.7 11.6 10.0 8.4 6.2 3.4 2.1 83.l KERN Arvin 1.2 I.8 3.5 4.7 6.6 7.4 8.1 7.3 5.3 3.4 1.7 l.O 51.9 Bakersfield 1.0 1.8 3.5 4.7 6.6 7.7 8.5 7.3 5.3 3.5 I.6 0.9 52.4 Bakersfield/Bonanza 1.2 2.2 3.7 5.7 7.4 8.2 8.7 7.8 5.7 4.0 2.1 1.2 57.9 Bakersfield/Greenlee 1.2 2.2 3.7 5.7 7.4 8.2 8.7 7.8 5.7 4.0 2.1 1.2 57.9 Belridge 1.4 2.2 4.1 5.5 7.7 8.5 8.6 7.8 6.0 3.8 2.0 1.5 59.2 Blackwells Corner l .4 2.1 3.8 5.4 7.0 7.8 8.5 7.7 5.8 3.9 1.9 I.2 56.6 Buttonwillow I.O 1.8 3.2 4.7 6.6 7.7 8.5 7.3 5.4 3.4 1.5 0.9 52.0 China Lake 2.1 3.2 5.3 7.7 9.2 10.0 11.0 9.8 7.3 4.9 2.7 1.7 74.8 Delano 0.9 I.8 3.4 4.7 6.6 7.7 8.5 7.3 5.4 3.4 1.4 0.7 52.0 Famoso 1.3 1.9 3.5 4.8 6.7 7.6 8.0 7.3 5.5 3.5 1.7 1.3 53.l Grapevine 1.3 l.8 3.1 4.4 5.6 6.8 7.6 6.8 5.9 3.4 1.9 1.0 49.5 Inyokem 2.0 3.1 4.9 7.3 8.5 9.7 11.0 9.4 7.1 5.1 2.6 l.7 72.4 Isabella Dam 1.2 1.4 2.8 4.4 5.8 7.3 7.9 7.0 5.0 3.2 1.7 0.9 48.4 Lamont 1 3 2.4 4.4 4.6 6.5 7.0 8.8 7.6 5.7 3.7 1.6 0.8 54.4 Lost Hills 1.6 2.2 3.7 5.1 6.8 7.8 8.7 7.8 5.7 4.0 2.1 1.6 57.l McFarland/Kern 1.2 2.1 3.7 5.6 7.3 8.0 8.3 7.4 5.6 4.1 2.0 1.2 56.5 Shafter 1.0 1.7 3.4 5.0 6.6 7.7 8.3 7.3 5.4 3.4 I.5 0.9 52.l Taft 1.3 1.8 3.1 4.3 6.2 7.3 8.5 7.3 5.4 3.4 1.7 1.0 51.2 Tehachapi 1.4 1.8 3.2 5.0 6.1 7.7 7.9 7.3 5.9 3.4 2.1 1.2 52.9 KINGS Caruthers I.6 2.5 4.0 5.7 7.8 8.7 9.3 8.4 6.3 4.4 2.4 1.6 62.7 Page38.11 Register 1015, No 38, 9-18-2015 Item 12.b. - Page 23 §495 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 Appendix A -Reference Evapotranspiration <EToJ Table* Annual County and City Jan Feb Mar Apr May Jun Jul Aue: Sep Oct Nov Dec ETo KINGS Corcoran 1.6 2.2 3.7 5.1 6.8 7.8 8.7 7.8 5.7 4.0 2.1 1.6 57.1 Hanford 0.9 1.5 3.4 5.0 6.6 7.7 8.3 7.2 5.4 3.4 1.4 0.7. 51.5 Kettleman 1.1 2.0 4.0 6.0 7.5 8.5 9.1 8.2 6.1 4.5 2.2 1.1 60.2 Lemoore 0.9 1.5 3.4 5.0 6.6 7.7 8.3 7.3 5.4 3.4 1.4 0.7 51.7 Stratford 0.9 1.9 3.9 6.1 7.8 8.6 8.8 77 5.9 4.1 2.1 1.0 58.7 LAKE Lakeport 1.1 1.3 2.6 3.5 5.1 6.0 7.3 61 4.7 2.9 1.2 0.9 42.8 Lower Lake 1.2 1.4 2.7 4.5 5.3 6.3 7.4 6.4 5.0 3.1 1.3 0.9 45.4 LASSEN BuntingyiJle 1.0 1.7 3.5 4.9 6.2 7.3 8.4 7.5 5.4 3.4 1.5 0.9 51.8 Ravendale 0.6 l.l 2.3 4.1 5.6 67 7.9 7.3 4.7 2.8 1.2 0.5 44.9 Susanville 0.7 LO 2.2 4.1 5.6 6.5 7.8 7.0 4.6 2.8 1.2 0.5 44.0 LOS ANGELES Burbank 2.1 2.8 3.7 4.7 5.1 6.0 6.6 6.7 5.4 4.0 2.6 2.0 51.7 Claremont 2.0 2.3 3.4 4.6 5.0 6.0 7.0 7.0 5.3 4.0 2.7 2.1 51.3 El Dorado 1.7 2.2 3.6 4.8 5.1 5.7 5.9 5.9 4.4 3.2 2.2 1.7 46.3 Glendale 2.0 2.2 3.3 3.8 4.7 4.8 5.7 5.6 4.3 3.3 2.2 1.8 43.7 Glendora 2.0 2.5 3.6 4.9 5.4 6.1 7.3 6.8 5.7 4.2 2.6 2.0 53.l Gorman 1.6 2.2 3.4 4.6 5.5 7.4 7.7 7.1 5.9 3.6 2.4 I.I 52.4 Hollywood Hills 2.1 2.2 3.8 5.4 6.0 6.5 6.7 6.4 5.2 3.7 2.8 2.1 52.8 Lancaster 2.1 3.0 4.6 5.9 8.5 9.7 11.0 9.8 7.3 4.6 2.8 1 7 71.l Long Beach 1.8 2.1 3.3 3.9 4.5 4.3 5.3 4.7 3.7 2.8 1.8 1.5 39.7 Los Angeles 2.2 2.7 3.7 4.7 5.5 5.8 6.2 5.9 5.0 3.9 2.6 1.9 50.1 Monrovia 2.2 2.3 3.8 4.3 5.5 5.9 6.9 6.4 5.1 3.2 2.5 2.0 50.2 Palmdale 2.0 2.6 4.6 6.2 7.3 8.9 9.8 9.0 6.5 4.7 2.7 2.1 66.2 Pasadena 2.1 2.7 3.7 4.7 5.1 6.0 7.1 6.7 5.6 4.2 2.6 2.0 52.3 Pearblossom 1.7 2.4 3.7 4.7 7.3 7.7 9.9 7.9 6.4 4.0 2.6 1.6 59.9 Pomona 1.7 2.0 3.4 4.5 5.0 5.8 6.5 6.4 4.7 3.5 2.3 1.7 47.5 Redondo Beach 2.2 2.4 3.3 3.8 4.5 4.7 5.4 4.8 4.4 2.8 2.4 2.0 42.6 San Fernando 2.0 2.7 3.5 4.6 5.5 5.9 7.3 -6.7 5.3 3.9 2.6 2.0 52.0 Santa Clarita 2.8 2.8 4.1 5.6 6.0 6.8 7.6 7.8 5.8 5.2 3.7 3.2 61.5 Santa Monica 1.8 2.1 3.3 4.5 4.7 5.0 5.4 5.4 3.9 3.4 2.4 2.2 44.2 MADERA Chowchilla 1.0 1.4 3.2 4.7 6.6 7.8 8.5 7.3 5.3 3.4 1.4 0.7 51.4 Madera 0.9 1.4 3.2 4.8 6.6 7.8 8.5 7.3 5.3 3.4 1.4 0.7 51.5 Raymond 1.2 1.5 3.0 4.6 6.1 7.6 8.4 7.3 5.2 3.4 1.4 0.7 50.5 MARIN Black Point 1.1 1.7 3.0 4.2 5.2 6.2 6.6 5.8 4.3 2.8 1.3 0.9 43.0 Novato 1.3 1.5 2.4 3.5 4.4 6.0 5.9 5.4 4.4 2.8 1.4 0.7 39.8 Point San Pedro 1.1 1.7 3.0 4.2 5.2 6.2 6.6 5.8 4.3 2.8 1.3 0.9 43.0 San Rafael 1.2 1.3 2.4 3.3 4.0 4.8 4.8 4.9 4.3 2.7 1.3 0.7 35.8 MARIPOSA Coulterville I.I 1.5 2.8 4.4 5.9 7.3 8.1 7.0 5.3 3.4 1.4 0.7 48.8 Mariposa 1.1 1.5 2.8 4.4 5.9 7.4 8.2 7.1 5.0 3.4 14 0.7 49.0 Yosemite Village 0.7 1.0 2.3 3.7 5.1 6.5 7.1 6.1 4.4 2.9 1.1 0.6 41.4 MENDOCINO Fort Bragg 0.9 1.3 2.2 3.0 3.7 3.5 3.7 3.7 3.0 2.3 1.2 0.7 29.0 Hop land l. l 1.3 2.6 3.4 5.0 5.9 6.5 5.7 4.5 2.8 1.3 0.7 40.9 Page38.12 Reg1'te1 2015, No 38, 9-18-2015 Item 12.b. - Page 24 Ti t l e 23 D e p a r t m e n t o f W a t e r Re s o u r c e s §4 9 5 Ap p e n d i x A- R e f e r e n c e Ev a p o t r a n s p i r a t i o n (E T 0 1 Ta b l e * An n u a l Co u n t y an d Ci t y J a n Fe b M a r Ap r Ma y J u n J u l Au ~ Se p O c t No v De c ET o ME N D O C I N O Po i n t Ar e n a 1. 0 1. 3 2. 3 3. 0 3. 7 3. 9 3 . 7 3. 7 3. 0 2. 3 1. 2 0. 7 29 . 6 Sa n e l Va l l e y 1. 0 l. 6 3. 0 4. 6 6. 0 7. 0 8. 0 7. 0 5. 2 3 4 1. 4 0. 9 49 . 1 Uk i a h 1. 0 1. 3 2. 6 3. 3 5. 0 5. 8 6. 7 5. 9 4. 5 2. 8 1. 3 0. 7 40 . 9 M E R C E D Ke s t e r s o n 0. 9 1. 7 3. 4 5. 5 7. 3 8. 2 8 . 6 7. 4 5. 5 3. 8 1. 8 0. 9 55 . l Lo s Ba n o s 1. 0 1. 5 3. 2 4. 7 6. 1 7. 4 8. 2 7. 0 5. 3 3. 4 1. 4 0. 7 50 . 0 - Me r c e d 1. 0 L5 3. 2 4. 7 6. 6 7. 9 8. 5 7. 2 5. 3 3 4 1. 4 0. 7 51 . 5 M O D O C Mo d o c / A l t u r a s 0. 9 1. 4 2. 8 3. 7 5. 1 6. 2 7 . 5 6. 6 4. 6 2. 8 1. 2 0. 7 43 . 2 M O N O Br i d g e p o r t 0. 7 0. 9 2. 2 3. 8 5. 5 6. 6 7. 4 6. 7 4. 7 2. 7 1. 2 0. 5 43 . 0 MO N T E R E Y Ar r o y o Se c o 1. 5 2. 0 3. 7 5. 4 6. 3 7. 3 7. 2 6. 7 5. 0 3. 9 2. 0 1. 6 52 . 6 Ca s t r o v i l l e 1. 4 1. 7 3. 0 4. 2 4 . 6 4. 8 4. 0 3. 8 3. 0 2. 6 1. 6 1 . 4 36 . 2 Go n z a l e s l J 1. 7 3. 4 4. 7 5. 4 6. 3 6. 3 5. 9 4. 4 3. 4 1. 9 1. 3 45 . 7 Gr e e n f i e l d 1. 8 2. 2 3. 4 4. 8 5. 6 6. 3 6. 5 6. 2 4. 8 3. 7 2. 4 1. 8 49 . 5 Ki n g Ci t y 1. 7 2. 0 3. 4 4. 4 4. 4 5. 6 6. 1 6. 7 6 . 5 5. 2 2. 2 1. 3 49 . 6 Ki n g Ci t y - O a s i s Rd . 1 4 1. 9 3. 6 5. 3 6. 5 7 . 3 7. 4 6. 8 5. 1 4. 0 2. 0 1. 5 52 . 7 Lo n g Va l l e y 1. 5 1. 9 3 2 4. 1 5. 8 6. 5 7 . 3 6. 7 5. 3 3. 6 2. 0 1. 2 49 . l Mo n t e r e y l. 7 1. 8 2. 7 3. 5 4. 0 4. 1 4. 3 4. 2 3. 5 2. 8 l. 9 1. 5 36 . 0 Pa j a r o 1. 8 2. 2 3. 7 4. 8 5. 3 5. 7 5. 6 5. 3 4. 3 3. 4 2. 4 1. 8 46 . 1 Sa l i n a s l. 6 1. 9 2. 7 3. 8 4. 8 4. 7 5. 0 4. 5 4. 0 2. 9 1. 9 1. 3 39 . 1 Sa l i n a s No r t h 1. 2 1. 5 2. 9 4. 1 4. 6 5. 2 4. 5 4. 3 3. 2 2. 8 1. 5 1. 2 36 . 9 Sa n Ar d o 1. 0 1. 7 3. 1 4. 5 5. 9 7. 2 8. 1 7. 1 5. 1 3. 1 1. 5 1. 0 49 . 0 Sa n Ju a n 1. 8 2. 1 3. 4 4. 6 5. 3 5. 7 ' 5. 5 4. 9 3. 8 3 2 2. 2 1. 9 44 . 2 So l e d a d 1. 7 2. 0 3. 4 4. 4 5. 5 5 . 4 6. 5 6. 2 5. 2 3. 7 2. 2 1. 5 47 . 7 NA P A An g w i n 1. 8 1. 9 3. 2 4. 7 5. 8 7. 3 8. 1 7. 1 · 5. 5 4. 5 2. 9 2. 1 54 . 9 Ca m e r o s 0. 8 1. 5 3. 1 4. 6 5. 5 6. 6 6 . 9 6. 2 4. 7 3. 5 1. 4 1. 0 45 . 8 Oa k v i l l e 1. 0 1. 5 2. 9 4. 7 5. 8 6. 9 7. 2 6 . 4 4. 9 3. 5 l. 6 1. 2 47 . 7 St He l e n a 1. 2 1 . 5 2. 8 3. 9 5. 1 6. 1 7. 0 6. 2 4. 8 3. 1 1. 4 0. 9 44 . 1 Yo u n t v i l l e 1. 3 1. 7 2. 8 3. 9 5. 1 6. 0 7. 1 6. 1 4. 8 3. 1 1 5 0. 9 44 . 3 NE V A D A Gr a s s Va l l e y 1. 1 1. 5 2. 6 4. 0 5. 7 7. 1 7. 9 7. 1 5. 3 3. 2 1. 5 0. 9 48 . 0 Ne v a d a Ci t y 1. 1 1. 5 2. 6 3. 9 5. 8 6 9 7. 9 7. 0 5. 3 3. 2 1. 4 0. 9 47 . 4 OR A N G E Ir v i n e 2. 2 2. 5 3. 7 4. 7 5. 2 5. 9 6. 3 6. 2 4 6 3. 7 2. 6 2. 3 49 . 6 La g u n a Be a c h 2. 2 2 . 7 3. 4 3. 8 4. 6 4. 6 4. 9 4. 9 4. 4 3. 4 2. 4 2. 0 43 . 2 Sa n t a An a 2. 2 2. 7 3. 7 4. 5 4. 6 5. 4 6. 2 6 1 4. 7 3. 7 2. 5 2. 0 48 . 2 P L A C E R Au b u r n 1. 2 1. 7 2. 8 4. 4 6. 1 7. 4 8. 3 7. 3 5. 4 3. 4 1. 6 LO 50 . 6 Bl u e Ca n y o n 0. 7 1. 1 2. 1 3. 4 4. 8 6. 0 7. 2 6. 1 4. 6 2. 9 0. 9 0. 6 40 . 5 Co l f a x 1. 1 1 5 2. 6 4. 0 5. 8 7 1 7. 9 7. 0 5. 3 3. 2 1. 4 0. 9 47 . 9 Ro s e v i l l e l . l 1. 7 3. 1 4. 7 6. 2 7. 7 8. 5 7 3 5. 6 3. 7 I 7 1. 0 52 . 2 So d a Sp n n g s 0. 7 0. 7 1. 8 3. 0 4. 3 5. 3 6. 2 5 5 4. 1 2. 5 0. 7 0. 7 35 . 4 Ta h o e Ci t y 0 7 0. 7 1. 7 3. 0 4. 3 5. 4 6. 1 5. 6 4. l 2. 4 0. 8 0. 6 35 . 5 Tr u c k e e 0. 7 0. 7 1. 7 3. 2 4. 4 5. 4 6. 4 5. 7 4. 1 2. 4 0. 8 0. 6 36 . 2 Pa g e 38 . 1 3 Re g I S t e r 20 1 5 , No 38 , 9- 1 8 - 2 0 1 5 It e m 12 . b . - Pa g e 25 §495 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 Appendix A-Reference Evapotranspiration <ETo Table* Annual County and City Jan Feb Mar Apr May Jun .Jul Aug Sep Oct Nov Dec ETo PLUMAS Portola 0.7 0.9 1.9 3.5 4.9 5.9 7.3 5.9 4.3 2.7 0.9 0.5 39.4 Qumcy 0.7 0.9 2.2 3.5 4.9 5.9 7.3 5.9 4.4 2.8 1.2 0.5 40.2 RIVERSIDE Beaumont 2.0 2.3 3.4 4.4 6.1 7.1 7.6 7.9 6.0 3.9 2.6 1.7 55.0 Blythe 2.4 3.3 5.3 6.9 8.7 9.6 9.6 8.7 6.9 5.0 3.0 2.2 71.4 Cathedral City 1.6 2.2 3.7 5 1 6.8 7.8 8.7 7.8 5.7 4.0 2.1 1.6 57.1 Coachella 2.9 4.4 6.2 8.4 10.5 11.9 12 3 10.1 8.9 6.2 3.8 2.4 88.1 Desert Center 2.9 4.l 6.4 8.5 11.0 12.l 12.2 11.1 9.0 6.4 3.9 2.6 90.0 Elsinore 2 l 2.8 3.9 4.4 5.9 7.1 7.6 7.0 5.8 3.9 2.6 1.9 55.0 Indio 3.1 3.6 6.5 8.3 10.5 11.0 10.8 9.7 8.3 5.9 3.7 2.7 83.9 La Quinta 2.4 2.8 5.2 6.5 8.3 8.7 8.5 7.9 6.5 4.5 2.7 2.2 66.2 Mecca 2.6 3.3 5.7 7.2 8.6 9.0 8.8 8.2 6.8 5.0 3.2 2.4 70.8 Oasis 2.9 3.3 5.3 6.1 8.5 8.9 8.7 7.9 6.9 4.8 2.9 2.3 68.4 Palm Desert 2.5 3.4 5.3 6.9 8.7 9.6 9.6 8.7 6.9 5.0 30 2.2 71.6 Palm Springs 2.0 2.9 4.9 7.2 8.3 8.5 11.6 8.3 7.2 5.9 2.7 1.7 71.1 Rancho California 1.8 2.2 3.4 4.8 5.6 6.3 6.5 6.2 4.8 3.7 2.4 1.8 49.5 Rancho Mirage 2.4 3.3 5.3 6.9 8.7 9.6 9.6 8.7 6.9 5.0 3.0 2.2 71.4 Ripley 2.7 3.3 5.6 7.2 8.7 8.7 8.4 7.6 6.2 4.6 2.8 2.2 67.8 Salton Sea North 2.5 3.3 5.5 7.2 8.8 9.3 9.2 85 6.8 5.2 3.1 2.3 71.7 Temecula East II 2.3 2.4 4.1 4.9 6.4 7.0 7.8 7.4 5.7 4 I 2.6 2.2 56.7 Thermal 2.4 3.3 5.5 7.6 9.1 9.6 9.3 8.6 7.1 5.2 3.1 2.1 72.8 Riverside UC 2.5 2.9 4.2 5.3 5.9 6.6 7.2 6.9 5.4 4.1 2.9 2.6 56.4 Winchester 2.3 2.4 4.1 4.9 6.4 6.9 7.7 7.5 6.0 3.9 2.6 2.1 56.8 SACRAMENTO Fair Oaks 1.0 1.6 3.4 4.1 6.5 7.5 8.1 7.1 5.2 3.4 1.5 1.0 50.5 Sacramento 1.0 1.8 3.2 4.7 6.4 7.7 8.4 7.2 5.4 3.7 1.7 0.9 51.9 Twitchell Island 1.2 1.8 39 5.3 7.4 8.8 9.1 7.8 5.9 3.8 1.7 1.2 57.9 SAN BENITO Hollister 1.5 1.8 3.1 4.3 5.5 5.7 6.4 5.9 5.0 3.5 1.7 1.1 45.l San Bemto 1.2 1.6 3.1 4.6 5.6 6.4 6.9 6.5 4.8 37 1 7 1.2 47.2 San Juan Valley 1.4 1.8 3.4 4.5 6.0 6.7 7.1 6.4 5.0 3.5 1.8 1.4 49.1 SAN BERNARDINO Baker 2.7 3.9 6.1 8.3 10.4 11.8 12.2 11.0 8.9 6.1 3.3 2.1 86.6 Barstow NE 2.2 2.9 5.3 6.9 9.0 10.1 9.9 8.9 6.8 4.8 2.7 2.1 71.7 Big Bear Lake 1.8' 2.6 4.6 6.0 7.0 7.6 8.1 7.4 5.4 4.1 2.4 1.8 58.6 Chino 2.1 2.9 3.9 4.5 5.7 6.5 7.3 7.1 5.9 4.2 2.6 2.0 54.6 Crestline 1.5 1.9 3.3 4.4 5.5 6.6 7.8 7. J 5.4 3.5 2.2 1.6 50.8 Lake Arrowhead 1.8 2.6 4.6 6.0 7.0 7.6 8.1 7.4 5.4 4.1 2.4 1.8 58.6 Lucerne Valley 2.2 2.9 5.1 6.5 9.1 11.0 11.4 9.9 7.4 5.0 3.0 1.8 75 3 Needles 3.2 4.2 6.6 8.9 I 1.0 12.4 12 8 11.0 8.9 66 4.0 2.7 92.l Newberry Springs 2.1 2.9 5.3 8.4 9.8 10.9 11.1 9.9 7.6 5.2 3 1 2.0 78.2 San Bernardino 2.0 2.7 3.8 4.6 5.7 69 7.9 7.4 5.9 4.2 2.6 2.0 55.6 Twentynine Palms 2.6 3.6 5.9 7.9 10.1 11.2 11.2 10.3 8.6 5.9 3.4 2.2 82.9 Victorville 20 2.6 4.6 6.2 7.3 8.9 9.8 9.0 6.5 4.7 2.7 2.1 66.2 SAN DIEGO Chula Vista 2.2 2.7 3.4 3.8 4.9 4.7 5.5 4.9 4.5 34 2.4 2.0 44.2 Escondido SPV 2.4 2.6 39 4.7 5.9 6.5 7.1 6.7 5.3 3.9 2.8 2.3 54.2 Miramar 2.3 2.5 3.7 4.1 5.1 5.4 6.1 5.8 4.5 3.3 2.4 2.1 47.l Page38.14 Reg1ste1 2015, No 38, 9-18-2015 Item 12.b. - Page 26 Title 23 Department of Water Resources §495 Appendix A-Reference Evapotranspiration (ETo) Table* Annual County and Citv Jan Feb Mar Apr May Jun Jul AUi! Sep Oct Nov Dec ETo SAN DIEGO Oceanside 2.2 2.7 3.4 3.7 4.9 4.6 4.6 5.1 4.1 3.3 2.4 2.0 42.9 Otay Lake 2.3 2.7 3.9 4.6 5.6 5.9 6.2 6.1 4.8 3.7 2.6 2.2 50.4 Pme Valley 1.5 2.4 3.8 5.1 6.0 7.0 7.8 7.3 6.0 4.0 2.2 1.7 54.8 Ramona 2.1 2.1 3.4 4.6 5.2 6.3 6.7 6.8 5.3 4.1 2.8 2.1 51.6 San Diego 2.1. 2.4 3.4 4.6 5.1 5.3 5.7 5.6 4.3 3.6 2.4 2.0 46.5 Santee 2.1 2.7 3.7 4.5 5.5 6.1 6.6 6.2 5.4 3.8 2.6 2.0 51.l Torrey Pines 2.2 2.3 3.4 3.9 4.0 4.1 4.6 4.7 3.8 2.8 2.0 2.0 39.8 Warner Spnngs 1.6 2.7 3.7 4.7 5.7 7.6 8.3 7.7 6.3 4.0 2.5 1.3 56.0 SAN FRANCISCO San Francisco 1.5 1.3 2.4 3.0 3.7 4.6 4.9 4.8 4 1 2.8 1.3 0.7 35.1 SAN JOAQUIN Farmington 1.5 1.5 2.9 4.7 6.2 7.6 8.1 6.8 5.3 3.3 1.4 0.7 50.0 Lodi West 1.0 1.6 3.3 4.3 6.3 6.9 7.3 6.4 4.5 3.0 1.4 0.8 46.7 Manteca 0.9 1.7 3.4 5.0 6.5 7.5 8.0 7.1 5.2 ,., ,., 1.6 0.9 51.2 .:> • .:> Stockton 0.8 1.5 2.9 4.7 6.2 7.4 8 1 6.8 5.3 3.2 1.4 0.6 49.1 Tracy 1.0 1.5 2.9 4.5 6.1 7.3 7.9 6.7 5.3 3.2 1.3 0.7 48.5 SAN LUIS OBISPO Arroyo Grande 2.0 2.2 3.2 3.8 4.3 4.7 4.3 4.6 3.8 3.2 2.4 1.7 40.0 Atascadero 1.2 1.5 2.8 3.9 4.5 6.0 6.7 6.2 5.0 3.2 1.7 LO 43.7 Morro Bay 2.0 2.2 3.1 3.5 4.3 4.5 4.6 4.6 3.8 3.5 2.1 1.7 39.9 Nipomo 2.2 2.5 3.8 5.1 5.7 6.2 6.4 6.1 4.9 4.1 2.9 2.3 52.l Paso Robles 1.6 2.0 3.2 4.3 5.5 6.3 7.3 6.7 5.1 3.7 2.1 1.4 49.0 San Luis Obispo 2.0 2.2 3.2 4.1 4.9 5.3 4.6 5.5 4.4 3.5 2.4 1.7 43.8 San Miguel 1.6 2.0 3.2 4.3 5.0 6.4 7.4 6.8 5.1 3.7 2.1 1.4 49.0 San Simeon 2.0 2.0 2.9 3.5 4.2 4.4 4.6 4.3 3.5 3.1 2.0 1.7 38.1 SAN MATEO Hal Moon Bay 1.5 1.7 2.4 3.0 3.9 4.3 4.3 4.2 3.5 2.8 1.3 1.0 33.7 Redwood City 1.5 1.8 2.9 3.8 5.2 5.3 6.2 5.6 4.8 3.1 1.7 1.0 42.8 Woodside 1.8 2.2 3.4 4.8 5.6 6.3 6.5 6.2 4.8 3.7 2.4 1.8 49.5 SANT A BARBARA Betteravia 2.1 2.6 4.0 5.2 6.0 5.9 5.8 5.4 4.1 3.3 2.7 2.1 49.1 Carpenteria 2.0 2.4 3.2 3.9 4.8 5.2 5.5 5.7 4_5 3.4 2.4 2.0 44.9 Cuyarna 2.1 2.4 3.8 5.4 6.9 7.9 8.5 7.7 5.9 4.5 2.6 2.0 59.7 Goleta 2.1 2.5 39 5.1 5.7 5.7 5.4 5.4 4.2 3.2 2.8 2.2 48.1 Goleta Foothills 2.3 2.6 3.7 5.4 5.3 5.6 5.5 5.7 4.5 3.9 2.8 '} ... __ .:J 49.6 Guadalupe 2.0 2.2 3.2 3.7 4.9 4.6 4.5 4.6 4.1 3.3 2.4 1.7 41.l Lompoc 2.0 2.2 3.2 3.7 4.8 4.6 4.9 4.8 3.9 3.2 2.4 1 7 41.1 Los Alamos 1.8 2.0 3.2 4.1 4.9 5.3 5.7 5.5 4.4 3.7 2.4 1.6 44.6 Santa Barbara 2.0 2.5 3.2 3.8 4.6 5.1 5.5 4.5 3.4 2.4 1.8 1.8 40.6 Santa Maria 1.8 2.3 3.7 5.1 5.7 5.8 5.6 5.3 4.2 3.5 2.4 1.9 47.4 Santa Ynez 1.7 2.2 3.5 5.0 5.8 6.2 6.4 6.0 4.5 3.6 2.2 1.7 48.7 Sisquoc 2.1 2.5 3.8 4.1 6.1 6.3 6.4 5.8 4.7 3.4 2.3 1.8 49.2 Solvang 2.0 20 3.3 4.3 5.0 5.6 6.1 5.6 4.4 3.7 2.2 1.6 45.6 SANTA CLARA Gilroy 1.3 I 8 3.1 4.1 5.3 5.6 6.1 5.5 4.7 3.4 1.7 1.1 43.6 Los Gatos 1.5 1.8 2.8 3.9 5.0 5.6 6.2 5.5 4.7 3.2 1.7 1.1 42.9 Morgan Hill 1.5 1.8 3.4 4.2 6.3 7.0 7.1 6.0 5 1 3.7 1.9 1.4 49.5 Palo Alto 1.5 1.8 2.8 3.8 5.2 5.3 6.2 5.6 5.0 3.2 1.7 1.0 43.0 Page 38.14(a) Register 2015. No 38, 9-18-2015 Item 12.b. - Page 27 §4 9 5 BA R C L A Y S CA L I F O R N I A CO D E O F RE G U L A T I O N S Ti t l e 23 Ap p e n d i x A - Re f e r e n c e Ev a p o t r a n s p i r a t i o n (E T o Ta b l e * An n u a l Co u n t v an d Ci t v J a n Fe b M a r A p r Ma v J u n Ju l AU ! ! Se n O c t No v De c ET o SA N T A CL A R A Sa n Jo s e 1. 5 1. 8 3. 1 4. 1 5. 5 5 . 8 6. 5 5. 9 5. 2 3. 3 1. 8 1. 0 45 . 3 SA N T A C R U Z De La v e a g a 1. 4 1. 9 3. 3 4. 7 4. 9 5. 3 5. 0 4. 8 3. 6 3. 0 1. 6 1. 3 40 . 8 Gr e e n Va l l e y Rd 1. 2 1. 8 3. 2 4. 5 4. 6 5. 4 5. 2 5. 0 3. 7 3. 1 1. 6 1- ? 40 . 6 Sa n t a Cr u z 1. 5 1 . 8 2. 6 3. 5 4. 3 4. 4 4. 8 4. 4 3. 8 2. 8 1. 7 1. 2 36 . 6 Wa t s o n v i l l e 1. 5 1. 8 2. 7 3. 7 4. 6 4. 5 4. 9 4. 2 4. 0 2. 9 1. 8 1 . 2 37 . 7 We b b 1. 8 2. 2 3. 7 4. 8 5. 3 5. 7 5 . 6 5. 3 4. 3 3. 4 2. 4 1. 8 46 . 2 SH A S T A Bu r n e y 0. 7 1. 0 2. 1 3. 5 4. 9 5. 9 7. 4 6. 4 4. 4 2. 9 0. 9 0. 6 40 . 9 Fa l l Ri v e r Mi l l s 0. 6 1. 0 2. 1 3. 7 5. 0 6. 1 7. 8 6. 7 4. 6 2. 8 0. 9 0. 5 41 . 8 Gl e n b u r n 0. 6 1. 0 2. 1 3. 7 5. 0 6. 3 7. 8 6 . 7 4. 7 2. 8 0. 9 0. 6 42 . I Mc A r t h u r 0. 7 1. 4 2. 9 4. 2 5. 6 6. 9 8. 2 7. 2 5 0 3. 0 1. 1 0. 6 46 . 8 Re d d i n g 1. 2 1 . 4 2. 6 4. 1 5. 6 7. 1 8. 5 7. 3 5. 3 3. 2 1. 4 0. 9 48 . 8 SI E R R A Do w n i e v i l l e 0. 7 1. 0 2. 3 3. 5 5. 0 6. 0 7 4 6. 2 4. 7 2. 8 0. 9 0. 6 41 . 3 Si e r r a vi l l e 0. 7 1. 1 2. 2 3. 2 4. 5 5. 9 7. 3 6. 4 4. 3 2. 6 0. 9 0. 5 39 . 6 SI S K I Y O U Ha p p y Ca m p 0. 5 0. 9 2. 0 3. 0 4. 3 5. 2 6. 1 5. 3 4. 1 2. 4 0. 9 0. 5 35 . 1 Ma c D o e l 1. 0 1. 7 3. 1 4. 5 5. 9 7. 2 8. 1 7. 1 5. 1 3. 1 1. 5 1. 0 49 . 0 Mt Sh a s t a 0. 5 0. 9 2. 0 3. 0 4. 5 5. 3 6. 7 5. 7 4. 0 2. 2 0. 7 0. 5 36 . 0 Tu l e l a k e FS 0. 7 1. 3 2. 7 4. 0 5. 4 6. 3 7. 1 6. 4 4. 7 2. 8 1. 0 0. 6 42 . 9 We e d 0. 5 0. 9 2. 0 2. 5 4. 5 5. 3 6. 7 5. 5 3. 7 2. 0 0. 9 0. 5 34 . 9 Yr e k a 0. 6 0. 9 2. 1 3. 0 4. 9 5. 8 7. 3 6. 5 4. 3 2. 5 0. 9 0. 5 39 . 2 SO L A N O Be n i c i a 1. 3 1. 4 2. 7 3 8 4. 9 5. 0 6. 4 5. 5 4. 4 2. 9 1. 2 0. 7 40 . 3 Di x o n 0. 7 1. 4 3. 2 5. 2 6. 3 7. 6 8. 2 7. 2 5. 5 4. 3 1. 6 l . l 52 . l Fa i r f i e l d 1. 1 1. 7 2. 8 4. 0 5. 5 6. 1 7. 8 6. 0 4. 8 3. 1 1. 4 0. 9 45 . 2 Ha s t i n g s Tr a c t 1. 6 2. 2 3. 7 5. 1 6. 8 7 . 8 8. 7 7. 8 5. 7 4. 0 2. 1 1. 6 57 . 1 Pu t a h Cr e e k 1. 0 1. 6 3. 2 4. 9 6. 1 7. 3 7. 9 7. 0 5. 3 3. 8 1. 8 1 . 2 51 . 0 Ri o Vi s t a 0. 9 l. 7 2. 8 4. 4 5. 9 6. 7 7. 9 6. 5 5. 1 3. 2 1. 3 0. 7 47 . 0 Su i s u n Va l l e y 0. 6 1. 3 3. 0 4. 7 5. 8 7. 0 7. 7 6. 8 5. 3 3. 8 1. 4 0. 9 48 . 3 Wi n t e r s 0. 9 1. 7 3. 3 5. 0 6. 4 7. 5 7. 9 7. 0 5. 2 3. 5 1. 6 LO 51 . 0 SO N O M A Be n n e t t Va l l e y l. 1 1. 7 3. 2 4. 1 5. 5 6. 5 6. 6 5. 7 4. 5 3. 1 1. 5 0. 9 44 4 Cl o v e r d a l e 1. 1 1. 4 2. 6 3. 4 5. 0 5. 9 6. 2 5. 6 4. 5 2. 8 1. 4 0. 7 40 . 7 Fo r t Ro s s 1. 2 1 . 4 2. 2 3. 0 3. 7 4. 5 4. 2 4. 3 3. 4 2. 4 1. 2 0. 5 31 . 9 He a l d s b u r g 1. 2 1. 5 2. 4 3. 5 5. 0 5. 9 6. 1 5. 6 4. 5 2. 8 1. 4 0. 7 40 . 8 Li n c o l n 1. 2 1. 7 2. 8 4. 7 6. 1 7. 4 8. 4 7. 3 5. 4 3. 7 1. 9 1. 2 51 . 9 Pe t a l u m a 1. 2 1. 5 2. 8 3. 7 4. 6 5. 6 4 6 5. 7 4. 5 2. 9 1. 4 0. 9 39 . 6 Sa n t a Ro s a 1. 2 1. 7 2. 8 3. 7 5 0 6. 0 6. 1 5. 9 4. 5 2. 9 1. 5 0. 7 4 2 0 Va l l e y o f th e Mo o n 1. 0 1. 6 3. 0 4. 5 5. 6 6. 6 7. 1 6. 3 4. 7 3. 3 1. 5 1. 0 46 . l Wm d s o r 0. 9 1. 6 3. 0 4. 5 5. 5 6. 5 6. 5 5. 9 4. 4 3. 2 1. 4 1. 0 44 . 2 ST A N I S L A U S De n a i r 1. 0 l. 9 3 6 4. 7 7. 0 7. 9 8. 0 6. 1 5. 3 3. 4 1. 5 LO 51 . 4 La Gr a n g e 1. 2 1. 5 3. 1 4. 7 6. 2 7. 7 8. 5 7. 3 5. 3 3. 4 1. 4 0. 7 51 . 2 Mo d e s t o 0. 9 l. 4 3. 2 4. 7 6. 4 7. 7 8. 1 6. 8 5. 0 3. 4 1. 4 0. 7 49 . 7 Ne w m a n l. 0 1. 5 3. 2 4. 6 6. 2 7. 4 8. 1 6. 7 5. 0 3. 4 1. 4 0. 7 49 . 3 Oa k d a l e 1. 2 1. 5 3. 2 4. 7 6. 2 7 . 7 8. 1 7 I 5. 1 3. 4 1. 4 0. 7 50 . 3 Pa g e 38 . 1 4 ( b ) Re g l ' i t e 1 20 1 5 , No 38 , 9- 1 8 - 2 0 1 5 It e m 12 . b . - Pa g e 28 Title 23 Department of Water Resources §495 Anoendix A -Reference Evapotransuiration (ETo • Table* Annual Countv and City Jan Feb Mar Aor May Jun Jul Aug Sep Oct Nov Dec ETo STANISLAUS Patterson 1.3 2.1 4.2 5.4 7.9 8.6 8.2 6.6 5.8 4.0 1.9 1.3 57.3 Turlock 0.9 1.5 3.2 4.7 6.5 7.7 8.2 7.0 5.1 3.4 1.4 0.7 50.2 SUTTER Nicolaus 0.9 1.6 3.2 4.9 6.3 7.5 8.0 6.9 5.2 3.4 1.5 0.9 50.2 Yuba City 1.3 2.1 2.8 4.4 5.7 7.2 . 71 6.1 4.7 3.2 1.2 0.9 46.7 TEHAMA Corning 1.2 1.8 2.9 4.5 6.1 7.3 8.1 7.2 5.3 3.7 1.7 1.1 50.7 Gerber 1.0 1.8 3.5 5.0 6.6 7.9 8.7 7.4 5.8 4.1 1.8 I.I 54.7 Gerber Dryland 0.9 1.6 3.2 4.7 6.7 8.4 9.0 7.9 6.0 4.2 2.0 1.0 55.5 Red Bluff l.2 1.8 2.9 4.4 5.9 7.4 8.5 73 5.4 3.5 1.7 1.0 51.1 TRINITY Hay Fork 05 1.1 2.3 3.5 49 5.9 7.0 6.0 4.5 2.8 0.9 0.7 40.l Weaverville 0.6 1.1 2.2 3.3 4.9 5.9 7.3 6.0 4:4 27 0.9 0.7 40.0 TULARE Alpaugh 0.9 1.7 3.4 4.8 6.6 7.7 8.2 7.3 5.4 3.4 1.4 0.7 51.6 Badger LO J.3 2.7 4.1 6.0 7.3 7.7 7.0 4.8 3.3 1.4 0.7 47.3 Delano 1.1 1.9 4.0 4.9 7.2 7.9 8.1 7.3 5.4 3.2 1.5 1.2 53.6 Dinuba 1.1 l.5 3.2 4.7 6.2 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.2 Lindcove 0.9 1.6 3.0 4.8 65 7.6 8.1 7.2 5.2 3.4 1.6 0.9 50.6 Porterville 1.2 1.8 3.4 4.7 6.6 7.7 8.5 7.3 5.3 3.4 1.4 0.7 52.1 Visalia 0.9 1.7 3.3 5.1 68 7.7 7.9 6.9 4.9 3.2 1.5 0.8 50.7 TUOLUMNE Groveland 1.1 1.5 2.8 4.1 5.7 7.2 7.9 6.6 5.1 3.3 1.4 0.7 47.5 Sonora l l 1.5 2.8 4.1 5.8 7.2 7.9 6.7 5.1 3.2 1.4 0.7 47.6 VENTURA Camarillo 2.2 2.5 3.7 4.3 5.0 5.2 5.9 5.4 4.2 3.0 2.5 2.1 46.l Oxnard 2.2 2.5 3.2 3.7 4.4 4.6 5.4 4.8 4.0 3.3 2.4 2.0 42.3 Piru 2.8 2.8 4.1 5.6 6.0 6.8 7.6 7.8 5.8 5.2 3.7 3.2 61.5 Port Hueneme 2.0 2.3 3.3 4.6 4.9 4.9 4.9 5.0 3.7 3.2 2.5 2.2 43.5 Thousand Oaks 2.2 2.6 3.4 4.5 5.4 5.9 6.7 6.4 5.4 3.9 2.6 2.0 51.0 Ventura 2.2 2.6 3.2 3.8 4.6 4.7 5.5 4.9 4.1 3.4 2.5 2.0 43.5 YOLO Bryte 09 1.7 3.3 5.0 6.4 7.5 79 7.0 52 3.5 1 6 1.0 51.0 Davis 1.0 1.9 3.3 5.0 6.4 7.6 8.2 7.1 5.4 4.0 l.8 1.0 52.5 Esparto 1.0 1.7 3.4 5.5 6.9 8.1 8.5 7.5 5.8 4.2 2.0 1.2 55.8 Wmters 1.7 1.7 2.9 4.4 5.8 7.1 7.9 6.7 5.3 3.3 1.6 1.0 49.4 Woodland 1.0 l.8 3.2 4.7 6.1 7.7 8.2 7.2 5.4 3.7 1.7 1.0 51.6 Zamora 1.1 1.9 3.5 5.2 6.4 7.4 7.8 7.0 5.5 4.0 1.9 l.2 52.8 YUBA Browns Valley 1.0 1.7 3.1 4.7 6.1 7.5 8.5 7.6 5.7 4.1 2.0 1.1 52.9 Brownsville 1.1 1.4 2.6 4.0 5.7 6.8 7.9 68 5.3 3.4 l.5 0.9 474 *The values in this table were derived from: 1) California Irrigation Management Information System (ClMIS), 2) Reference EvapoTranspiration Zones Map, UC Dept. of Land, Air & Water Resources and California Dept of Water Resources 1999; and 3) Reference Evapotranspirat1on for Cahfomia, University of California, Department of Agriculture and Natural Resources (1987) Bulletin 1922; 4) Determining Daily Reference Evapotranspiration, Cooperative Extension UC Division of Agriculture and Natural Resources (1987), Publication Leaflet 21426 HISTORY 1. New Appendix A filed 9-10-2009; opcrauvc 9-10-2009 pursuant to Govern- ment Code scct1011 11343.4 (Register 2009, No 37). 2 Repealer and new Appendix A filed 9-15-2015: operative 9-15-2015 Exempt from OAL review and subnutted to OAL for prmtmg only pursuant to Gover- nor's Executive Order No B-29-15 (4-1-2015) (Register 2015. No 38) Page 38.14(c) Register 2015, No 38, 9-18-2015 Item 12.b. - Page 29 § 495 BARCLAYS CALIFORNIA CODE OF REGULATIONS Appendix B -Sample Water Efficient Landscape Worksheet. WATER EFFICIENT LANDSCAPE WORKSHEET This worksheet 1s filled out by the project applicant and 1t 1s a required element of the Landscape Documentation Package Reference Evapotranspiration (ETo) Hydrozone # /Planting Description" Plant Factor(PF) Irrigation Methodb Irrigation Efficiency (IE)0 ETAF (PF/IE) Landscape ETAF x Area Area (sq, ft,) Estimated Total Water Use (ETWU)0 Regular Landscape Areas Special Landscape Areas a Hydrozone #/Planting Description Eg 1 ) front lawn 2) low water use plantings 3) medium water use plantmg blrrigation Method overhead spray or drip 0 MAWA (Annual Gallons Allowed) = (Eto) ( O 62) [ (ETAF x LA) + ((1-ETAF) x SLA)] where 0.62 1s a conversion factor that converts acre- inches per acre per year to gallons per square foot per year. LA 1s the total landscape area m square feet, SlA 1s the total special landscape area in square feet, and ETAF 1s 55 for res1dent1al areas and 0 45 for non- res1dent1al areas ET AF Calculations Regular Landscape Areas Total ETAF x Area (B) Total Area (A) Average ETAF B.,.A All Landscape Areas Total ETAF x Area (B+D) Total Area (A+C) Sitewide ETAF (B+D) .,. (A+C) Totals (A) (B) Totals (C) (0) ETWU Total Maximum Allowed Water Allowance (MAWA)c clmgation Efficiency O 75 for spray head O 81 for drip dETWU(Annual Gallons Required)= Eto x 0 62 x ETAF x Area where 0 62 1s a conversion factor that converts acre- inches per acre per year to gallons per square foot per year. Average ETAF for Regular Landscape Areas must be 0.55 or below for residential areas, and 0.45 or below for non-residential areas. Title 23 HISTORY 2. Repealerand new Appendix B filed 9-15-2015; operative 9-15-2015 Exempt I. New Appendix B filed 9-10-2009; operahvc 9-10-2009 pursuant to Govern-from OAL review and submitted to OAL for prmting only pursuant to Gover- ment Code section 11343.4 (Register 2009, No. 37). _ nor's faecut1ve Order No. B-29-15 (4-1-2015) (Register 2015. No 38). Page 38.14(d) Regi.tcr 2015, No 38, 9-18-2015 Item 12.b. - Page 30 Title 23 Department of Water Resources Appendix C -Sample Certificate of Completion. CERTIFICATE OF COMPLETION This certificate 1s filled out by the project appli~ant upon completion of the landscape project. PART 1. PROJECT INFORMATION SHEET Date Project Name Name of Project Applicant Telephone No Fax No Title Email Address Company Street Address City State I Zip Code Project Address and Location: Street Address Parcel, tract or lot number, if available City Latitude/Longitude (optional) State I Zip Code Property Owner or his/her designee: Name Telephone No Fax No Title Email Address Company Street Address City State I Zip Code Property Owner "I/we certify that I/we have received copies of all the documents within the Landscape Documentation Package and the Certificate of Completion and that 1t is our responsibility to see that the project is maintained in accordance with the Landscape and Irrigation Maintenance Schedule." Property Owner Signature Date Please answer the questions below: 1. Date the Landscape Documentation Package was submitted to the local agency _____ _ 2 Date the Landscape Documentation Package was approved by the local agency _____ _ 3 Date that a copy of the Water Efficient Landscape Worksheet (including the Water Budget Calculation) was submitted to the local water purveyor _____ _ § 495 Page 38.14(e) Register2015,No 38,9-18-2015 Item 12.b. - Page 31 § 495 BARCLAYS CALIFOR.."NIA CODE OF REGULATIONS PART 2. CERTIFICATION OF INSTALLATION ACCORDING TO THE LANDSCAPE DOCUMENTATION PACKAGE "I/we certify that based upon periodic site observations, the work has been completed in accordance with the ordinance and that the landscape planting and irrigation installation conform with the criteria and specif1cat1ons of the approved Landscape Documentation Package." Signature* Date Name (print) Telephone No Fax No Title Email Address License No or Certification No Company Street Address City State I Zip Code *Signer of the landscape design plan, signer of the irrigation plan, or a licensed landscape contractor PART 3. IRRIGATION SCHICDULING Attach parameters for setting the irrigation schedule on controller per ordinance Section 492 10 PART 4. SCHEDULE OF LANDSCAPE AND IRRIGATION MAINTENANCE Attach schedule of Landscape and I rngation Maintenance per ordinance Section 492.11. PART 5. LANDSCAPE IRRIGATION AUDIT REPORT Attach Landscape Irrigation Audit Report per ordinance Section 492 12. PART 6. SOIL MANAGEMENT REPORT Attach soil analysis report, 1f not previously submitted with the Landscape Documentation Package per ordinance Section 492 6. Attach documentation verifying implementation of recommendations from soil analysis report per ordinance Section 492.6 Title 23 HISTORY L New Appendix C filed 9-10-2009; operative 9-10-2009 pursuant to Govern- ment Code section 11343.4 (Register 2009, No. 37). 2 Repealer and new Appendix C filed 9-15-2015: operat1ve9-15-2015. Exempt fiom OAL review and submitted to OAL for printing only pursuant to Gover- nor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38). Page 38.14(f) Rcgi>tcr 2015, No 38. 9-18-2015 Item 12.b. - Page 32 Title 23 Department of Water Resources § 497.2 Appendix D -Prescriptive Compliance Option. (a) This appendix contains prescriptive reqmrements winch may be used as a compliance option to the Model Water Efficient Landscape Or- dmance. ' (b) Compliance with the following items is mandatory and must be documented on a landscape plan in order to use the prescriptive com- phance option: (I) Subimt a Landscape Documentation Package which includes the followmg elements: (A) date (B) project applicant (C) project address (if available, parcel and/or lot number(s)) (D) total landscape area (square feet), mcluding a breakdown of turf and plant material (E) project type (e.g., new. rehabilitated, public, private, cemetery, homeowner-installed) (F) water supply type (e.g., potable, recycled, well) and identify the lo- cal retail water purveyor if the applicant is not served by a private well (G) contact mfonnation for the project applicant and property owner (H) applicant signature and date with statement, "I agree to comply with the requirements of the prescriptive compliance optmn to the MWE- LO'". (2) Incorporate compost at a rate of at least four cubic yards per 1,000 square feet to a depth of six inches into landscape area (unless contra-111- d1cated by a soil test), (3) Plant material shall comply with all of the following; (A) For residential areas, install climate adapted plants that reqmre oc- casional, little or no sUIUmer water (average WUCOLS plant factor 0.3) for 75% of the plant area excluding edibles and areas using recycled wa- ler; For non-residential areas, install climate adapted plants that require occasmnal, little or no summer water (average WUCOLS plant factor 0.3) for l 00% of the plant area excluding edibles and areas using recycled water; (B) A mmimum three inch (3 ") layer of mulch shall be applied on all exposed soil surfaces of planting areas except in turf areas, creeping or rooting groundcovers, or d1rect seeding applications where mulch is con- traindicated. (4) Turf shall comply with all of the followmg: (A) Turf shall not exceed 25% of the landscape area in residential areas, and there shall be no turf in non-residential areas; (B) Turf shall not be planted on sloped areas which exceed a slope of l foot vertical elevatmn change for every 4 feet of horizontal length; (C) Turf is prohibited in parkways Jess than 10 feet wide, unless the parkway is adjacent to a parkmg stnp and used to enter and exit vehicles. Any turf in parkways must be irrigated by sub-surface imgation or by other technology that creates no overspray or runoff. (5) Imgatlon systems shall comply with the following: (A) Automatic irrigation controllers are required and must use evapo- transpiration or soil moisture sensor data and utilize a rain sensor. (B) Irrigation controllers shall be of a type which does not lose pro- gramming data in the event the primary power source 1s mterrupted. ( C) Pressure regulators shall be installed on the migatmn system to en- sure the dynamic pressure of the system is within the manufacturers rec- ommended pressure range. (D) Manual shut-off valves (such as a gate valve, ball valve, or butter- fly valve) shall be mstalled as close as possible to the point of connection of the water supply (E) All 1rrigation emission devices must meet the reqmrements set 111 the ANSI standard, ASABE/ICC 802-2014. "Landscape Imgation Spnnkler and Emitter Standard," All spnnkler heads mstalled in the land- scape must document a dtstnbution unifonnity low quarter of 0.65 or higher usmg the protocol defined 111 ASABE!ICC 802-2014. (F) Areas less than ten ( 10) feet in width in any direct10n shall be mi- gated with subsurface irrigation or other means that produces no runoff or overspray. (6) For non-residential projects with landscape areas of 1,000 sq. ft. or more, a private submeter(s) to measure landscape water use shall be installed. ( c) At the time of final inspect10n, the permit applicant must provide the owner of the property with a certificate of completion, certificate of installat10n, migation schedule and a schedule of landscape and irriga- tion maintenance. HISTORY 1 New Appendix D filed 9-15-2015; operative 9-15-2015. Exempt from OAL review and subnutted to OAL forprmtmg only pursuant to Governor's Execu- tive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38) Chapter 2. 7 .1. Flood Protection Corridor Program of the Costa-Machado Water Act of 2000 § 497 .1. Scope. (a) These regulations implement Sections 79035 through 79044, and 79044.9 m Article 2.5 of Chapter 5 of Division 26 of the Waler Code, which Division is the Costa-Machado Water Act of2000. They establish a process for fundmg acqutsitmn of property rights and related activities for flood protection corridor projects undertaken by the Department of Water Resources dtrectly or through grants to local public agencies or nonprofit organizations. (b) The Flood Protection Corridor Program is statewide in scope. Withm the geographic scope of the CALFED Bay-Delta Program, funds in the subaccount for this program shall be used for projects that, to the greatest extent possible, are consistent with the CALFED long-term plan identified in the Programmatic Record of Decision of August 28, 2000. NOTE Authority cited: Sections 8300. 12580 and 79044.9, Water Code, 2000 Cal. Stat. Ch 52, Item No. 3860-101-6005; 2001 Cal Stat. Ch. 106, Item No 3860-001-0001, Provision 3; and 2002 Cal. Stat. Ch. 379, Item No 3860-101-6005. Reference. Sectrnns 79037. 79043, 79044 and 79044.9, Water Code HISTORY I. New chapter2.7 I (sections 497.1--497.12) and section filed 8-19-2003; opera- tive 8-19-2003 pursuant to Government Code section 11343 4 (Reg1ster2003. No. 34) § 497.2. Definitions. The words used in this chapter have meanmgs set forth as follows· (a) "A List" means the preferred prionty hst of projects described in Section 497.6 (b) "Applicant" means an entity that 1s actmg as the prmcipal party makmg an application for fundmg under the provisions of the Costa-Ma- chado Water Act of2000. ( c) "B List" means the reserve prionty list of projects described m Sec- tion 497.6. (d) "CEQA" means the Caltfornia Environmental Quality Act, Public Resources Code Sections 21000 et seq (e) "Department" means the Cahfomia Departlnent of Waler Re- sources. (i) "Director" means the D!fector of the Department of Water Re- sources. (g) "FEMA" means the Federal Emergency Management Agency. (h) "Fully funded" with respect to a grant project means funded to the full am01mt of the requested funds or to the funding limit, whichever is less. (i) "Grant application fonn" means the Dcpartlnent"s form entitled "Flood Protectmn Corridor Program Project Evaluation Criteria and Competitive Grant Application Form" dated Apnl 9, 2003 and mcorpo- rated herem by this reference. (j) "Local public agency" means any political subdivismn of the State of California, mcluding but not limited to any county, city, city and county, district, joint powers agency, or council of governments. Page 38.14(g) Reg1>ter 2015, Ko 38, 9-IS-20i5 Item 12.b. - Page 33 § 497.3 ' BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23 (k) "Milestone" means a time when a sigmficant portion of a project is completed, as defined m the contract as a time for disbursement of grant funds. (l) "Nonprofit organization" means an organization that does not oper- ate for profit and has no official governmental status, including but not limited to clubs, societies, neighborhood orgamzat10ns, advisory coun- cils, conservation organizations and privately run local community con- servation corps. (m) "Program" means the Flood Protection Corridor Program estab- lished by Water Code Division 26, Chapter 5, Article 2.5. (n) "Property interest" means any right m real property, including easement, fee title, and any other kind ofnght acquired by legally binding means. ( o) "Project" means all planning, engineering, acquisition of real prop- erty interests, construction and related activities undertaken to imple- ment a discrete action undertaken under the program pursuant to Water Code Section 79037. (p) "Sponsor" means an apphcant who has received grant funding through the apphcation process described m these regulations (q) "Subaccount" means the Flood Protect10n Corridor Subaccount created by Water Code Section 79035(a). NOTE· Authority cited Sections 8300, 12580 and 79044.9, Water Code Refer- ence: Scct10ns 79035, 70937, 79038(a) and 79043, Water Code; and Sections 21000 et seq, Public Resources Code. HISTORY I. New section filed 8-19-2003; operative 8-19-2003 pursuant to Government Code sect10n I I 343 4 (Register 2003, No 34). § 497.3. Program Management Process. The Department selects, approves, funds, and momtors projects funded by grants under the program. The process ofmanagmg the pro- gram includes these steps: (a) The Department shall appoint and maintain a Project Evaluatron Team composed of Department staff and other consulting governmental agencies. The Department may request consultation with any appropnate government agency, mcluding but not limited to the Department ofCon- servat10n, the Department of Fish and Game, the Department ofF ood and Agriculture, the Office of Emergency Services. and the CALFED Bay- Delta Program. (b) Local public agencies or nonprofit orgamzations qualified under Section 497.4 may apply for program grants for projects at such tunes as the Department may designate. Applications for proposed projects shall be submitted in response to a sohcitat10n issued by the Department. As long as uncommitted funds remain available to fund new projects, the Department shall solicit proposals at least once per calendar year. The time period for submitting applications shall be 90 days from the date no- tice is given by the Department that project proposals are being solicited Notices shall be provided to cities, counties, flood control districts, recla- mation districts, and other local government entities that manage flood plains and flood control projects. The Department \Vill also provide no- tice to nonprofit organizations with interest m flood management issues, and shall send notice to all individuals and organizations that have re- quested notice of the opportunity to submit applications. Notices may be given by mail, electronic mail, website posting, or any other method that provides easy access and prompt availability. Projects shall meet the re- qmrements of Section 497.5. Applications shall meet the requirements of Section 497.7. (c) The Project Evaluat10n Team shall review each application and evaluate the subject project w1thm 60 days of the close of the specified submittal period, or within 60 days of receipt of requested additional m- formation, whichever is later. (d) The Project Evaluation Team shall notify the Department to re- quest the applicant to provide additional information within 30 days of the Department's request if: ( 1) The project appears potentially eligible but is missmg infonnation needed to evaluate the ments of the project, or (2) Additional information 1s needed to evaluate the merits of the proj- ect in comparison to others received. ( e) If the requested additional infonnatron cannot be provided in 30 days, the apphcant may refile its application with the additional infornia- t10n at the Department's next solicitat10n of proposals. (f) When a proposal that meets minimum quahfications is complete and all requested additional infom1ation has been supplied, the Project Evaluation Team shall complete the evaluation of the project including recommendmg its place on a pri01ity list as described in Sect10n 497 .6. (g) After each solicitation of proposals. Department staff, usmg the evaluations and recommended pnontrcs of the Project Evaluation Team, shall recommend projects, pnonty, and amounts per pro_1ect to be funded and submit the recommendations to the Director for approval ofthepnor- ity lists Department staff may recommend: [The next page 1s 38.J 5.] Page 38.14(h) RegMer 20i5, No 38, 9-18-2015 Item 12.b. - Page 34 SAN LUIS OBISPO GUIDE TO THE USE OF ATTACHMENT 2 GRAYWATER Vegetated leach field , page 15. Constructed wetland reed beds, page 21-22. SLO Botanic Garden build ing uses a constructed wetland water reclamation system creat ing riparian habitat page , 21-22. Item 12.b. - Page 35 This is the first of an educational series regarding water and waste applications of appropriate technology for San Luis Obispo County. Appropriate technology is defined as: Applying technology to address problems related to energy use, the water cycle, and affordable building at the smallest and most accessible scale possible. These guidelines are being developed by the San Luis Obispo Coalition of Appropriate Technology _(SLO-COAT) to specifically address efforts to maintain a healthy hydrologic cycle in San Luis Obispo County. SLO-COAT is a joint effort by SLO Green Build, the San Luis Bay Chapter of the Surfrider Foundation and the Santa Lucia Chapter of the Sierra Club. The inform~tion presented is for general education purposes. ·Final details and construction must be developed and designed for specific site conditions; therefore, SLO-COAT is hereby indemnified from any liability arising from the use of this information. SuifJjder Foundation .. Cover images (clockwise from top left) courtesy of Carmichael Environmental Des1gn/Bmld, Greg McMillan and San Lms Sustainability Group Architects Item 12.b. - Page 36 HISTORY During Jeny Brown's Administration in California from 1972 to 1980, the State Office of Appropriate Technology was developed. OAT as it was called was headed by Sim Van der Ryn, the State Architect at the time. OAT encouraged the application of appropriate technologies to address the economic and environmental concerns of development. SITUATION The dismantling of OAT by the next administration in 1980 proved to be short-sighted given the ongoing concerns about energy and the double threat of climate change coupled with peak fossil fuel supply. The water imbalances in San Luis Obispo County have become evident as many municipalities implement water rationing policies. Growth has always been naturally restrained due to scarce water resources in the County, so increased infrastructure costs burden new development. Fortunately, over the past thirty years, the research and refinement of appropriate technologies have much to offer us today. SLO-COAT believes it is imperative that we revisit, at a local scale, the encouragement and application of appropriate technology. San Luis Obispo County is in a position to be at the forefront of these efforts to reconcile growth and environmental quality. This San Luis Obispo Guide to the Use of Graywater was produced to encourage the use of graywater in a safe and legal manner. Contributing members of SLO-COAT· Ken Haggard-Architect & Planner, Mikel Robertson-General Contractor & Green Building Material Specialist, Rachel Alj1lani-LEED AP, Joshua Carmichael-Landscape Designer & Contractor Special thanks to: Brad Lancaster, Art Ludwig, Brock Dolman and Johnathan Todd who have helped educate our community on the current trends in appropriate technology applications and regulatwns. Of course this would not be possible without the support of SLO-COAT members· Mladen Bandov, Andrew Christie, Mary Fullwood, Cheryl Lenhardt, Steve Paige, Scott Peterson, Lawson Schaller, Jessica Steely, Karen Venditti, Sam Studer, and the numerous family and friends who are also concerned about water resources and sustainable development. Item 12.b. - Page 37 r ' rl i "· PACIFIC OCEAN salt water intrusion aquifer recharge CUESTA RIDGE I aquifer recharge WEST TO EAST SECTION -""" -~--------------- Th e Greening of San Luis Obispo sketch by Ken Haggard PAGE 1 Item 12.b. - Page 38 SALINAS RIVER precip itation SHED SALINAS VALLE'!' A healthy hydrologic cycle provides fresh water in the form of precipitation and condensation. This water is transmitted to riparian systems consisting of rivers and streams which in turn charge underground aquifers. In its natural state, this cycle creates healthy watersheds , prevents erosion, stabilizes salt water intrusion and supports rich ecological systems. Increased built areas usually accentuate adverse changes to the natural hydrologic cycle; therefore , it becomes of vital necessity for us to mimic the natural hydrologic cycle, using the same processes regarding water movement, filtration, and storage. I J SAN CARRIZO PLAIN ANDREAS , FAULT LOWES T RA I NFA LL ... -1 CLOS ED WATER SHED CARRIZO PLAIN SODA LAKE aquifer recharge Application of appropriate technologies as described in this guide can allow development while still maintaining a healthy hydrologic cycle. In addition to graywater, appropriate technology topics related to a healthy water ecology are : Low Impact Development Rainwater Harvesting Waterless Waste Treatment Bioremediation Strategies Look forward to more information and educational events presented by SLO-COAT on these topics. If you would like to become involved contact SLO Green Build through the web at www.slo~reenbuild .or~ PAGE 2 Item 12.b. - Page 39 INTRODUCTION WHAT IS GRAYWATER? blackwater graywater Graywater is untreated household or building waste water that has not come in contact with toilet or kitchen sink waste. Essentially, graywater is soapy water from washing machines, bathroom sinks, bathtubs, and showers. Graywater should not be stored as it will quickly become foul and turn into blackwater unless treated. Graywater is kept separate from blackwater, which comes from kitchen sinks, dishwashers and toilets. Blackwater is not safe for reuse without more elaborate procedures for treatment & filtration. All graywater systems must be valved to send water to either the graywater distribution area or the sewer/ septic (blackwater) line. Most plumbing combines the wastewater from all fixtures to flow together into either a sewer system or a septic tank. Although combined wastewater (graywater and blackwater) can be treated and reused, the rigorous standards, system costs and permitting requirements for this type of water recycling are prohibitive for most homeowners. In comparison, a graywater system offers an effective way to reuse your wastewater with minimal cost and effort. The graywater designs presented in this guide can provide you with a better understanding for developing your own graywater system. IS GRAYWATER LEGAL? ... YES!!! There is an increased demand for water due to population and economic growth. In addition, pollution of and reduction in the water table has adversely affected our once balanced ecosystems, making water an increasingly important and valuable natural resource. Clean potable water is the most valuable type of water, but graywater is useful in meeting our water needs as well. Graywater should not be considered a waste product because it is a valuable resource that can be 1. Lower water utility bills for home or business occupants 2. Potential for landscape irrigation 3 ~ Groundwater or aquifer recharge 4. Reduced strain on septic or sewer systems which in turn lower energy loads at central treatment plants ( 5. Bioremediation strategies can clean water and enhance the local ecology PAGE 3 WHY IS GRAYWATER SO IMPORTANT? applied to irrigation and other non-potable water uses. Harvesting graywater to meet your non-potable water demand utilizes an appropriate technology that can recover initial costs quickly. The added benefits to your watershed and community infrastructure make having a graywater system an environmentally friendly solution to scarce water supplies, since more than half of your indoor water can be reused as graywater. It's time to tap into graywater! Item 12.b. - Page 40 ~ Introduction ....................................................................................................... 3-4 How to Get Started ............................................................................................ 5-6 Calculations & Standards .................................................................................. 7-8 Graywater Process & Design Options ........................................................... 9-10 CARD: RECIPE CARDS FOR OPTIONS SHOWN ON PAGE 8 fT ;l l)''A . I s 'r nk 0 . 1 . urge ia pt1ons .......................................................................................... 1 . . j ' ' k: s· .:· Distribution Options ....................................................................................... 11 I . I::·· .C "'I Branched System ............................................................................................. 12 ~t· . : :1 :· .. D j Flower Pot Emitter .......................................................................................... 13 fl I , I !.·:'E · Mini-Leach Field ............................................................................................. 14 11: l .F r· .. ' ·I,;,;•· 1·• G ! r t · H l' 1 :-1 ' ·! •i , ..... ! I 11:.: I l F_, , F ! 1 J' I 1 ·1 i'l Vegetated Leach Field ..................................................................................... 15 Mulched Watering Moat ................................................................................. 16 Tree Watering Moat ......................................................................................... 17 Infiltration Galley ............................................................................................ 18 Drip System with Rewatering ................................................................... 19-20 1+> . . . ..,.: --'K.,,,·_· ·-+-! _R=ee=d"-'B=e=d=s ................................................................................................... 21-22 rw 1 :-.L 1 r:~ . l ; .1M Washing Machine Sump ................................................................................. 23 In House Use of Graywater ............................................................................ 24 Checklist ............................................................................................................. 25 Summary & References ....................................................................................... 26 Appendix 1 -Detergents for Graywater Systems ................................................ 27 Appendix 2 -Plants for Graywater Systems ....................................................... 28 Glossary of Graywater Terms ......................................................................... 29-31 This guide has been set-up in a way that allows you to consider options that are appropriate for your specific site conditions and graywater resources, pages 7-10. Once you choose a graywater system that is right for you, then you can use the recipe cards to determine the components and overall design. PAGE 4 Item 12.b. - Page 41 1 2 H 0 W T 0 ~to Develop Your Own Graywater System ' __/ Reference page Adopt a baseline conservation program. ___________________ ? Do a few calculations to determine: a. Graywater flow. _________________________ 7 b. Soil absorption capacity & distribution area. 8 c. Site planning issues. 8 Evaluate system options to determine the solution for your situation. _________ 10 Draw up your chosen system using page 8 and the recipe cards., ___________ 11-24 Use the checklist provided to' refine your design. ________________ .25 Provide and keep an operations and maintenance manual for your system. This manual shall remain with the building throughout the life of the system and upon change of ownership, the new owner shall be notified the structure contains a graywater system. [Ref 9J Apply and obtain a permit from the County or your City (ifnecessary). Construct your system. Operate & maintain your system. 0 Enjoy your graywater use and educate others about the process and benefits. PAGE S Item 12.b. - Page 42 ' You can use graywater, it is legal under state regulations. This guide illustrates how to design, permit and maintain your own graywater system as interpreted by the California State Graywater law [ref 4J· Maintaining and Using Graywater CJ Graywater should be avoided when irrigating edibles in your landscape. [Ref 9J CJ Avoid planting invasive water loving plants (pampas grass, Arunda donax, scotch broom, etc.). CJ Avoid using graywater in hoses that can be used to wash or play with. CJ Potable and graywater supply pipes should never be connected. CJ Graywater that has come in contact with soiled diapers is blackwater. CJ Corrugated pipes for graywater discharge should be avoided, they slow the flow. CJ Use a subsurface drip system when irrigating lawns. CJ In general, tilling organic matter into soil that comes in contact with graywater is good. Detergents & Cleaners !ref. 11 Additional information regarding the composition of detergents can be found in appendix 1-Detergents for Graywater Systems, page 27. Hand soaps and shampoos by and large do not damage plants or clog soil profiles, in fact graywater is a light fertilizer. Laundry detergents commonly have sodium and boron which are chemicals that can have a negative effect on landscapes. The following are detergents or cleaners to avoid: CJ Bleaches or softeners CJ Detergents that advertise whitening, softening, and enzymatic powers CJ Detergents with the following ingredients: boron, borax, chlorine, bleach, petroleum distillers, sodium and peroxygen CJ Products designed to open clogs without scrubbing CJ Water softeners that use sodium chloride Plants that Typically Love Graywater !ref. 11 Oleander, bougainvillea, fan and date palms, rosemary, roses, agapanthus, Bermuda grass, honeysuckle, Australian tea tree, Italian stone, oaks, Arizona cypress, cottonwood, olive, ice plant, juniper, purple hopseed, manzanita, ceanothus, rushes, coffeeberry, toyon, western redbud, california wax myrtel, penstemon. Plants that Typically Don't Like Graywater rref. tl Rhododendron, bleeding hearts, wood sorrel, hydrangeas, azaleas, violets, impatiens, begonias, ferns, foxgloves,' gardenias, philodendron, camellias, primroses, crape mertyle, redwoods, star jasmine, holly and deoder cedar. For more information on graywater plants, see appendix 2-Plants for Graywater Systems, page 28. PAGE 6 Item 12.b. - Page 43 C D N S E R .VAT I 0 N F I R S T ; T H E N ----· Bathrooms IJ Check for leaks from pipes and faucets, the smallest drip can waste up to 2 gallon's per day! IJ Install dual-flush or ultra low flow toilets. IJ Install low-flow faucets or faucet aerators. IJ Tum off water while brushing your teeth and shaving. IJ Take 5 minute or shorter showers and tum water off during and while soaping. Kitchen IJ Scrape rather than rinse dishes before placing-them in the dishwasher. IJ · Do not thaw frozen food under running water. IJ When hand washing dishes, fill , one basin with soapy water and the other with rinse water. IJ Install Energy Star rated dishwasher and only wash full loads. IJ Avoid running water continuously while washing dishes. Laundry IJ Install Energy Star clothes washer and set water volume to the minimum requirement per load. IJ Use short water cycles for lightly soiled loads. IJ Pre-treat stains to avoid multiple washings. IJ Soak heavily soiled items in a sink one third full to prewash. PAGE 7 STEP 1: BASELINE CONSERVATION Before incorporating graywater into your lifestyle, first start off by adopting a baseline conservation plan. Conservation is the most affordable technology and practices are readily available that require little if any behavior change. Most water providers have programs to help you conserve that offer free or discounted low flow shower heads, faucet aerators, toilet tummies and more. While this document does not attempt to provide a thorough cost benefit analysis, we recognize it is a worthwhile consideration. Cost/benefit will vary greatly depending on the graywater system selected, the local cost of water and the volumes utilized. Some systems are very simple, low cost and can be done by the homeowner with few new parts and supplies, or by integrating salvaged/used materials. Other systems are more complex, requiring professional installation, and expensive components. Regardless of the system selected and the volumes utilized, the user will have the satisfaction and benefit of reusing water, helping the environment, and having a drought resistant supply during mandatory watering restrictions. STEP 2: CALCULATIONS A-Graywater Flow Using the number of bedrooms in your residence provides an estimate of the graywater flow for typical households: Enter the number of bedrooms = Calculate the number of occupants = C::::J • Start with two (2) occupants for the first bedroom • Add one (1) occupant for each add1t1onal bedroom Graywater can be estimated as generated from each occupant on a daily basis. Choose from the following list of sources based on your graywater system. Each graywater flow estimate is based per occupant. Showers, bathtubs, wash basins & clothes washer Showers, bathtubs & wash basins (only) Clothes washer (only) ~5 gallqns ger d(!y] Q'~_g~llons ger-aa~ M..9~lfon5 ger cia"Yi Multiply the number of occupants by the estimated graywater flow in gallons per day (gpd) per occupant to determine the total estimated graywater flow. Number of occupants x x Graywater flow per occupant gpd = = Total estimated graywater flow gpd For example, the graywater flow for a four-bedroom main house, which includes all fixtures such as showers, sinks, and clothes washer, and a one-bedroom guest house, which includes only a shower and sink, is estimated : Main House (4 bedroom)· 5 occupants x Guest House (1 bedroom)· 2 occupants x 40 gpd per occupant 25 gpd per occupant TOTAL GRAYWATER 200 gpd 50 gpd 250 gpd Item 12.b. - Page 44 c·ALCULATIDNS & STANDARDS· STEP 2: CALCULAJIONS B -Soil Absorption Capacity & Distribution Area Design the graywater system based on the soil and groundwater conditions of the property. Select an area within the property boundaries to be used for irrigation or disposal of the graywater. The surface and subsurface soil must be suitable to accept the design flow of graywater. The fundamental soil characteristic is the percolation rate, which indicates how fast the soil can absorb water. Soil types like fine sand or sandy loam have better percolation rates than clay, for instance. Better percolation rates mean that less area will be required to adequately disperse all the graywater. Percolation Rate Table: Percolation Test Infiltration Type 18"Wide Subsurface Drip Soil Type Results Irrigation Mini-Leachfield System (min/inch) ( sf/gpd) (linear ft/ gpd) ( sf/gpd) 0-4 not allowed -too fast Coarse sand or 5-ll 0.20 0.13 0.82 gravel Fine sand 12-17 0.25 0.17 0.95 Sandy loam 18-23 0.40 0.27 1.22 Sandy clay 24-47 0.60 0.40 1.50 Clay with considerable sand 48-59 0.90 0.60 2.18 or gravel Clay with small amount 60 1.20 0.80 2.72 of sand or gravel 61 + not allowed -too slow STEP 2: CALCULATIONS C -Site Planning frer. 41 Percolation Test Procedures Select percolation test locations in the area to be used for graywater disposal. Dig a few test holes (8"-12" diameter) to the same depth as the bottom of the disposal area. Cover the hole bottom with 2" of gravel. Pre- soak holes overnight. During the test, fill the holes at least 8 " -l 0" above the gravel. Usmg a stake marked at l/4" intervals, measure the falling water level at 30 minute intervals while re- filling after each measurement. Obtain at least 12 measurements (i.e., a perc test is at least 6 hours long.) The drop during the fmal 30-minute interval is the calculated percolation rate converted to minutes per inch. For sandy soils where the water level drops faster than 6" in 25 minutes, take 12 measurements every 10 minutes. To locate your existing utility lines for your plot plan, call 811 or visit www.call811.com Minimum Horizontal Distance From Surge Irrigation Tank (feet) Field (feet) Buildings or structures 1 52 83 Property line adjoining private property 5 5 IVVater supply wells 4 50 100 Streams and lakes 4 50 50 Seepage pits or cesspools 5 5 Disposal field and 100% expansion area 5 4s Septic tank 0 56 On-site domestic water service line 5 51 Pressure public water main 10 108 Water ditches 50 50 ~When mmi-leach fields are installed in sloping ground, the mimmum horizontal distance between any part of the distnbution system and ground surface shall be 15 feet. 1 Including porches and steps, whether covered or uncovered, but does not mclude carports, covered walks, driveways and sunilar structures 2 The distance may be reduced to zero feet for aboveground tanks 1f approved by the Administrative Authority. 3 The distance may be reduced to two feet, with a water barrier, by the Administrative Authority, upon consideration of the soil expansion index. 4 Where special hazards are involved, the distance may be increased by the Admimstrative Authority. 5 Apphes to the mini-leach-field type system only. Plus two feet for each additional foot of depth m excess of one foot below the bottom of the drain line. 6 Applies to mini-leach-field type system only. 7 A two foot separation is required for subsurface drip systems. 8 For parallel construction or for crossings, approval by the Admmistrat1ve Authority shall be reqmred. 9 Minimum separation from highest known groundwater is five feet. *Drip systems may allow for a reduction in setbacks. PAGE 8 Item 12.b. - Page 45 PARTS 0 F A GRAYWATER 1.".-------•--,.,.---.,.----~--,...--. -~----~ -----~ ~---------· __ .,_ r ~ Collection of Graywater Individual plumbing of laundry or shower/ tub or sinks -or- Dual plumbing whole house (especially recommended for new construc~ion) Provide Surge Capacity gravity surge tank -or- pumped surge tank -or- surge capacity in the distribution system (i.e. branched irrigation system) Salt Build Up -What to do? Filtration Disk or in-line -filter -or- Bag, mesh or fabric · filter -or- Gravity sand filter -or- Pressurized sand filter Distribution Gravity fed -or- Pumped -or- Siphoned Salt builds up in the soils of graywater systems, especially in warmer areas. Salt can be leached out by flushing the system with fresh water. You might be surprised to find out that approximately every 1000 square feet of property can yield 600 gallons of water in a 1 inch rain storm. By directing the flow ofour roof's drip lines, gutters, and driveways into the landscape via depressions or basins, instead of mounds, the graywater system is flushed naturally and salt build up does not become a problem. · PAGE 9 SYSTEM Using Graywater Irrigation and aquifer recharge by Mini leach field -or- Branched system -or- Watering Moat -or- Field consisting of a drip system -or- Reed bed -or- Washing machine sump ' Use in the building " (toilet flushing) Cistern Mode -or- commercially available tank -' Aquifer Recharge ' & septic system relief Galley System Item 12.b. - Page 46 DESIGN 0 F YOUR GRAYWATER SYSTEM This page shows the basic components of all graywater systems and some options available to you. Choose the best option for your site, soil type, financial resources and maintenance preferences. Once a system is chosen, you can use the recipe cards for details of construction. NOTES: BASELINE CONSERVATION IS THE PREREQUISITE AND FIRST STEP IN GRAYWATER UTLIZATION. GRAYWATER SHOULD NOT BE STORED BUT SHOULD BE UTILIZED AS FAST AS YOU CAN PROCESS IT. ALL GRAYWATER SYSTEMS NEED TO HAVE A VALVE TO SWITCH TO YOUR SEPTIC OR SEWER SYSTEM. THE SURGE TANK ALLOWS YOU TO TEMPORARILY HOLD GRAYWATER IF THE FLOW EXCEEDS YOUR ABILITY TO UTILIZE IT DUAL FIELDS ARE USED IN LEACH AREAS FOR IRRIGATION TO GIVE ADEQUATE ABSORPTION TIME TO EACH SIDE. THE FLOW IS CONTROLLED BY A DISTRIBUTION OPTION SHOWN ON PAGE 11. DIAGRAM OF SYSTEM DPT/ONS REFERENCE RECIPE/PAGE CARD # HOUSE WITH BASELINE CONSERVATION ___ 9 GRAYWATER ESTIMATING DISCHARGE---------9 EVALUATING SOIL CONDITIONS 1 0 SITE STANDARDS & PLANNING 1 0 SWITCH VALVE SURGE TANK & DISTRIBUTION OPTIONS A. SURGE TANK OPTIONS A 1-----B. DISTRIBUTION OPTIONS B C. BRANCHED SYSTEM (NO SURGE TANK) __ C UTILIZATION OPTIONS (OTHER THAN THE BRANCHED SYSTEM) 1 . LEACH OPTIONS FOR IRRIGAIJQN D. FLOWER POT EMITTER------D E. MINI-LEACH FIELD E F. VEGETATED LEACH FIELD F G. MULCHED WATERING MOAT G H. TREE WATERING MOAT H I. INFILTRATION GALLEY I 11 11 12 13 14 15 16 17 THE DRIP SYSTEM REQUIRES A PUMPED SURGE TANK ----+---o----J. DRIP SYSTEM FIELD J TO MINIMIZE CLOGGING. K. REED BEDS K 18 19-20 21-22 23 IN-HOUSE UTILIZATION CAN BE FOR TOILET FLUSHING WITH EXCESS FLOWS TO IRRIGATION SYSTEMS AL THOUGH NOT HELPFUL FOR IRRIGATION, A TRADITIONAL LEACH FIELD CAN BE USED TO TAKE SOME LOAD OFF OF A SEWER SYSTEM OR RECHARGE THE LOCAL AQUIFER. L. WASHING MACHINE SUMP. L 2.JN-HOUSE UTILIZATION M. GRAYWATER TOILET FLUSHING ____ M 24 New technologies are constantly being refined and improved. PAGE 10 Item 12.b. - Page 47 graywater in GRAVITY unglued coupling to allow basket removal valve to sewer or septic tank min. 55 gal. tank of polyethylene, fiberglass coated metal or stainless steel SURGE CAPACITY A -SURGE TANK -------------------------------------- locking ring lid --wire hooks to 12" to 18" fine wire mesh basket valve to leach Ct::=:;ld graywater in l PUMPED mesh filter bag min. 55 gal. tank of/ polyethylene, fiberglass coated metal or lo sewer or stainless steel se tic tank locking ring lid NOTE: venting and optimal , activated 1 carbon air filter I not shown [ref.1] All graywater systems need to be able to handle the peak flows, or surge capacity, from the various plumbing fixtures. For most homes, a surge capacity of 45 gallons is sufficient. For instance, a 10-minute shower could generate 20-50 gallons of graywater at a time. Use the estimated daily flow rates as a guide for the surge capacity needed. If daily water use combines showers, bathing, and laundry all at the same time, the surge capacity should be adjusted accordingly. Graywater systems without sufficient surge capacity will cause pipes to backup. SURGE TANKS Surge tanks are the standard solutions for providing surge capacity, usually ranging between 30 to 55 gallons. Specific construction details and requirements including a conceptual diagram are given in the plumbing code. The surge tanks shown in this guide are examples and might not include all the permit requirements such as venting, backwater valves, bracing, labeling, etc. Multiple tanks could be joined together to provide additional surge capacity. In addition to the inlet and outlet ports, surge tanks also have an emergency drain valve and overflow outlet, which connect to the main sewer line. The overflow outlet should not have a valve and remain permanently open to the main sewer line, while other valves can be operated during cleaning and other maintenance activities. Surge tanks can be gravity-fed or pump-based distribution as well as have various filter configurations. Inadequate filtration and clogged pumps are two issues with the pump surge tank. Using pumps designed for wastewater such as effluent pumps are expensive but last longer than cheaper well water or sump pumps. Filters should be sized to minimize the change-out/cleaning frequency. Even with the best level of filtration, subsurface drip systems are likely to clog over time, so systems using an automated sand filtration with backwash capabilities fair even better than the prescribed drip system from the plumbing code. PAGE 1 1 Item 12.b. - Page 48 B -DISTRIBUTION OPTIONS Distribution is automatic in the branched system shown on recipe card C, but with the other absorption systems, distribution must be regulated to a give adequate time to each absorption area. This is done by a distribution box (D-box). A distribution box evenly splits the flow of graywater between absorption areas therefore they should be installed perfectly level on undisturbed ground. Pre-made D-boxes have 4" diameter inlet and outlet pipes with the inlet 1" higher than the outlets. Various options are shown below: Valve Control "Y" Outlet D-Box w/ Multiple Outlets Automatic system for splitting Automatic system for splitting flows equally between 2 flow equally between more absorption areas. than 2 areas. C -BRANCHJ;:D SYSTE:M BRANCHED DRAIN SYSTEM D-Box w/ Dipper Option This system provides automatic:· 1.5 gal surge to help prevent : the build up of solids. * available commercially as Polylok dipper box. [ref. 1] Surge capacity can be provided in the distribution plumbing and the receiving landscape if properly designed. Careful calculations are necessary to ensure that flow splitting and distribution piping function as intended and that piping fittings and slopes are installed properly. Constant slopes, adequately-sized outlets, and precise flow splitting are among the challenges with this approach to providing adequate surge capacity. The Branched Drain System, detailed by Art Ludwig, uses special double ell flow splitters, dipper boxes, and free-flow outlets such as a mulched moat system. Other emitters can also be used provided all the surge capacity is met. This option necessitates a sloped topography where lower elevation areas receive more water and should be planted accordingly. --. ----'" This is the only system that doesn't ' require a surge tank since the capacity of i the system is great· · ' Various emitters such as the flower pot emitter, tree watering moat, or infiltration galley can be used at terminal ends of the branched system. : i I 1 1 -As the bottom emitter fills to capacity, the graywater i fills up the system activating the higher emitters; therefore, the system must be on a slope. ~·~ ..... ---' i ,) '-....., I "~ ~ ·~-~ • e:...cc(V'-1....... ..•••~ ~Li:.£\11:3;..,. Absorption by the use of mini_-leach fields as shown in reci e card E is also ri..,o.,.s:;;,si;.;:;b,..le •. ___ .,.... ......... rre_1._2...,,...l THE FOLLOWING RELATIVE RATING GUIDE WILL HELP YOU COMPARE THE VARIOUS UTILIZATION OPTIONS, LOOK FOR THESE IMAGES AT THE TOP OF THE RECIPE CARDS LEAST (Cf!) TO MOST ((f) (fJ (f)) ENVIRONMENTALLY SUSTAINABLE LOW(~) TO HIGH(~~~) COMPLEXITY OF DESIGN, INSTALLATION OR MAINTENANCE LOW($} TO HIGH ($ $ $) COST FOR MATERIALS PAGE 1 2 Item 12.b. - Page 49 SUSTAINABILTY: ~ ~ COMPLEXITY: ~ ~ MATERIALS COST: $ $ D -FLOWER PDT EMITTER existing grade drip irrigation hose -""""'~--- 3/ 4" diameter PVC pipe or garden hose mulch coupling prevents removal of hose .e..ru:,.i.1.....,..v;-4--mini-leach pit with 1" basin area calculate infiltration rate using this area TECHNOLOGY HIGHLIGHT • • • Best suited for small tree or shrub groups with deep roots systems Works best with gravity surge tank, pumped surge tank or branched drain system Potential beneficial reuse of flower pots, buckets, or similar containers gravel or river rock [ref. 2] The flower pot emitter is a passive outlet from the distribution lines after a surge tank (or branched drain system). If each emitter is at the end of a branching pipe, careful flow control is needed to prevent overflowing at any single outlet. Trees and shrubs with deep root system benefit the most from this simple system. Ball valves or other control devices can be used to regulate flow to each emitter. · EXAMPLE OF DESIGN CALCULATIONS Total graywater flow (4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 0.40) Design area for flower pot emitter Minimum number of emitters (i.e., 80 -:-9) INSTALLATION 200 0.40 80 9 9 gallons per day (gpd) gpd per square foot square feet square feet per emitter flower pot emitters (rounded up) Fill a pit with clean gravel or river rock (minimum 1 ") at least 1 foot deep and 3 feet on each side. Cover the gravel with filter fabric. Place a flower pot (minimum 5 gallons) upside down on the filter fabric. Use 3/4" PVC pipe and a coupling to secure the pipe inside of the pot. Use a ball valve to help regulate the graywater flow to each emitter. Cover the gravel and filter fabric with mulch or soil at least 9 inches above the bottom of the flower pot. MAINTENANCE Clear mulch or soil to expose flower pot, lift up and clean out any clogging material. Replace filter fabric if needed. Flush out pipes and ball valves with clean water when flow is restricted. PAGE 13 Item 12.b. - Page 50 E -.MINI-LEACH FIELD SUSTAINABILTY: ~ I COMPLEXITY: ~ ~ MATERIALS COST: $ $ soil backfill .5 ~ CROSS. SECTION from surge tank E E LONGITUDINAL SECTION TECHNOLOGY HIGHLIGHT • • Best suited for straight rows of vegetation Works best with filtered gravity surge tank 1 00' maximum --·--.. ·---------------- 3" dia. or 4 11 dia. max. perforated drain pipe of ABS, PVC, or HDPE install level with contours max. slope of 3"/ 100' irrigation box removable , cap 90 I degree; sweep , el~ow .I OBSERVATION PORT (option 1) [ref. 1] • • Most beneficial for high flows, groundwater recharge or septic tank relief Detailed requirements provided in the plumbing code for simplified permitting The mini-leachfield is a standard design similar to a septic system leachfield with a few differences, including shallower placement. The mini-leachfield has low irrigation efficiency (i.e., most of the water drains away instead of used by the vegetation). Factors such as root intrusion, clogging potential, and the amount of imported gravel or stone overshadow the maintenance and sustainability benefits (compared to other designs.) EXAMPLE OF DESIGN CALCULATIONS Total graywater flow ( 4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 0.40) INSTALLATION 200 0.27 54 gallons per day (gpd) gpd per square foot for standard 18" wide trench linear feet (18" wide trench) Install valves to allow for switching between irrigation zones. Level each leach field along contours to allow for even distribution, with a maximum slope of 3" per 100'. Use non-corrugated PVC perforated pipe (minimum 3", maximum 4") with holes facing down. Install a 90 degree sweep elbow fitting to the surface with a removable cap as an observation port (optional). Fill a trench (minimum 12", maximum 36" width) with clean stone or gravel at 17" (or 18") below the surface for a 3" (or 4") PVC pipe. Place the PVC pipe on a 3" layer of gravel (3/4" to 2" diameter) with at least a 2" layer over the PVC pipe. Cover the gravel with filter fabric. Backfill with soil to the surface with a 9" minimum cover. MAINTENANCE Remove invading roots using the observation ports when needed. PAGE 14 Item 12.b. - Page 51 F -VEGETATEQ LEACH FIELD SUSTAINABILTY: @@ COMPLEXITY ~ ~ MATERIALS COST: $ $ ---.. ----------------------------- ' ' l <? I L shrub rush TECHNOLOGY HIGHLIGHT • • • Best suited for larger lots (or long runs) with well-designed landscaping Works best with filtered gravity surge tank Uses gravel or stone material for an aesthetic dry creek-type feature herb [ref.1] The vegetated leachfield is similar to the mini-leachfield using perforated p1pmg to distribute graywater to the surrounding landscape. Native grasses, sedges and shrubs suitable for wetland and drier conditions are located according to root access and proximity to the leachfield pipe. Stormwater flows along the swale during rainy periods to help flush out accumulated salt and sediment. EXAMPLE OF DESIGN CALCULATIONS Total graywater flow ( 4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 0.40) Design length for vegetated leachfield Minimum length required (i.e., 80 -0.5) INSTALLATION 200 0.40 80 0.5 160 gallons per day (gpd) gpd per square foot square feet square feet per linear foot of 6-inch wide trench linear feet of vegetated leachfield Note: maximum single run is 100 feet Create a depression (swale) along contour lines in the soil and mounded sides. Lay down a French drain (3" perforated PVC pipe, non-corrugated) in a 6" wide trench at 6" below the swale bottom. Connect pipes from graywater and roof runoff sources at a minimum 2% slope. Cover perforated pipe with filter fabric to prevent clogging. Place amended soil on top of the planting areas. Plant wetland-type plants at the bottom of the swale and upland-type plants along the mounded banks. Cover entire swale with 4" to 6" river rock and gravel mulch, with at least 9" directly over the perforated pipe. Install vault boxes at the ends of the pipe runs. MAINTENANCE Regular landscape maintenance and garden upkeep required during the growing seasons. Flush out at seasonal intervals and check for clogging and root intrusion. Most wetland plants get cut to the ground every winter. Trees and shrubs get pruned back as needed. Remove debris collected from vault boxes at the ends of the pipe. PAGE 15 Item 12.b. - Page 52 G -MULCHED WATERING MOAT SUSTAINABILTY: ~ ~ ~ COMPLEXITY: ~ MATERIALS COST: $ · ------·------~----- E ::3 graywater hose or PVC pipe ,..E ,.. . TECHNOLOGY HIGHLIGHT • • Best suited for small flows from single individual plumbing sources Works best with filtered gravity surge tank or branched drain system Potential beneficial reuse of woods chips, bark, or other mulch material ·2 E 00 shrubs ,.. The mulched watering moat is the simplest passive outlet yet requires regular maintenance to remove and replace decomposed mulch material. Whether plumbed from individual sources or an entire graywater system, each mulched watering moat needs to have well-draining soils (i.e., little or no clay) and sufficient surge capacity to prevent water from surfacing. EXAMPLE OF DESIGN CALCULATIONS Total graywater flow (4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 0.40) Designed area for mulched watering moat Minimum number of moats (i.e., 80 -9) INSTALLATION 200 gallons per day (gpd) 0 .40 gpd per square foot 80 square feet 9 square feet per moat 9 watering moats (rounded up) Fill a pit with clean gravel, river rock, bark, or wood chips (minimum 2") 3 feet wide on each side at ground surface. Use soil to create a berm at least 9" above the surface, with a maximum 2:1 slope to the pit bottom. Place 3/4" PVC pipe at least 9" below the ground surface into the moat. Use a screen around the outlet area to keep out pests. MAINTENANCE Flush the mulched moats periodically to reduce salt build up. Remove decomposed mulch material and replace with new material as necessary. Check for clogging and root intrusion at the pipe outlet. PAGE 16 Item 12.b. - Page 53 SUSTAINABILTY: ~ ~ ~ COMPLEXITY: ~ ~ MATERIALS COST: $ $ TECHNOLOGY HIGHLIGHT H -TREE WATERING MOAT SECTION ~xisting grade , ;PLAN l , flower pot or bucket with open bottom (min. S gal.) • • Best suited for high flow volumes and irrigation of trees and large shrubs Works best with gravity surge tank or branched drain system • Potential beneficial reuse of woods chips, bark, or other mulch material percolation test at this location to get infiltration rate for 2' x 6' area 18" deep ( 1 2 sq. ft. of absorption area) [ref.1 The tree watering moat is similar to the flower pot design with a larger basin for better percolation. Each tree watering moat needs to have well-draining soils (i.e., little or no clay) and sufficient surge capacity to prevent water from surfacing. Planning the location of the moats requires knowing the tree canopy size (or dripline) at maturity. EXAMPLE OF DESIGN CALCULATIONS Total graywater flow ( 4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 0.40) Designed area for tree watering moat Minimum number of moats (i.e., 80 -12) INSTALLATION 200 0.40 80 12 7 gallons per day (gpd) gpd per square foot square feet square feet per tree watering moat tree watering moats (rounded up) Dig a rectangular pit at 2 feet wide by 6 feet long at least 12" below the natural surface. Slope the sides at a maximum of3 feet horizontally for each foot vertically and berm up extra soil for an additional 6" above the ground. Place 3/4" PVC pipe at least 9" below the ground surface into the flower pot or bucket emitter (see Flower Pot Emitter profile) with brick supports. Create an open access for bucket emitters covered with a heavy stone for easier maintenance. Fill moat with clean gravel, river rock, bark, or wood chips (minimum 2"). Use roadside wood chips, composted municipal waste and recycled aggregate if possible. Locate each tree watering moat between 2/3 times and 1-1/2 times the radius of the tree canopy when fully grown. Use 6' for medium-sized trees, 12' for large trees, and 24' for very large trees. Keep water away from the trunk to avoid root rot. MAINTENANCE Flush the tree watering moats periodically to reduce salt build up. Remove decomposed mulch material and replace with new material as necessary. Check the bucket emitter and remove any clogging material as necessary. PAGE 17 Item 12.b. - Page 54 SUSTAINABILTY. ~ COMPLEXITY: ~ ~ MATERIALS COST: $ $ I -INFILTRATION GALLEY access port I ! brick supports I around edge TECHNOLOGY HIGHLIGHT • • Best suited for high flow volumes and irrigation of trees and large shrubs Works best with gravity surge tank, pumped surge tank or branched drain system Proven technology with septic systems The infiltration galley uses half-cylinder structures, such as manufactured infiltrators, barrels cut in half, or large diameter pipes, to create a large void space beneath the soil. The large capacity also allows for more surge volume for each galley. Manufactured infiltrators can be linked together to reduce piping. Design and install prefab infiltrators according to the manufacturer instructions. EXAMPLE OF DESIGN CALCULATIONS Total graywater flow ( 4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 0.40) Typical infiltrator disposal area (for example, 75" long x 34" wide x 12" deep) Minimum number of infiltrators (i.e., 80 + 17) INSTALLATION 200 gallons per day (gpd) 0.40 gpd per square foot 80 square feet 17 square feet per infiltrator 5 infiltrators (rounded up) Prefab infiltrator galleys should be installed according to the manufacturer instructions. Modify access ports and observation ports with stone markers for easier maintenance (optional). Alternative infiltration galleys include plastic 55- gallon drums cut lengthwise, large diameter plastic pipes cut lengthwise, and constructed box troughs; Construct with splash blocks, brick or mesh fabric supports (to keep galleys from sinking into the soil), and removable lids, if possible. Cover the galley with soil at least 9" from the bottom of the galley. Locate similarly to tree watering moat for tree irrigation (and away from tree trunks to prevent root rot.) MAINTENANCE Check access ports (if available) for any clogging material and remove as necessary. PAGE 18 Item 12.b. - Page 55 SUSTAINABILTY: ~ ~ COMPLEXITY: ~ ~ ~ MATERIALS COST: $ $ $ .J -DRIP SYSTEM ONE GRAYVIATER DRIP IRRIGATION ZONE -,---=l=:r air vacuum laterals ~~~::~~\ ; w11h Y filter lateral tubing relief valve plumbed at each high • point drainf~rm ~ header~· ! ir=~~===~~==9ar=I=~~!====;; TECHNOLOGY HIGHLIGHT • • • Best suited for lawns, clay soils, and sloped sites Works best with filtered pumped surge tank Standard (prescribed) technology for graywater lmc flushing valve [ref.1] A subsurface drip irrigation system is complex and also has the greatest potential for system failure. The drip system requires a well-maintained filter and a properly sized pumping system to prevent clogging. Further details on required equipment and materials are given in the plumbing code. Drip irrigation systems require at least 11 psi operating pressure, and generally include filters, tubing, valves, drip emitters, and controllers. Despite costs and maintenance, drip systems are highly efficient at irrigation, spreading the graywater over the largest possible area with the greatest control. EXAMPLE OF DESIGN CALCULATIONS Total graywater flow ( 4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 1.22) Emitter spacing, using 14" spacing in all directions Minimum number of emitters (i.e., 244 -:-1.36) 200 1.22 244 1.36 180 gallons per day (gpd) gpd per square foot square feet (sf) square feet per emitter emitters (spacing at 14" in all directions) Note: Further drip system design is required to ensure that the pump cycling meets the graywater flow rate. INSTALLATION Follow manufacturers instructions for installation of subsurface drip system equipment, including pre-filters, filters, pumps, drip tubing, and emitters. Pre-filters are an initial filter required to catch most of the lint, hair and particles found in graywater. This filter should be easily accessible for cleaning and replacement. They are commonly located at the inlet pipe in the surge tank. The surface area of the filter should be at least 2 square feet. Material can be PVC, polyethylene, woven mesh bag or paper canister filter. Pump options available include a sump pump, a centrifugal pump or submersible high head effluent pump. Use pressure regulators to maintain the pressure below 25 psi, where most fittings must be kept to prevent damage. Multiple drip system zones are useful to reduce the pump size and provide better operations. Zoned assemblies have a limited number of running feet to maintain the necessary pressure. Stagger drip lines between 12-14" apart so that emitters alternate from row to row. Use manual ball valves or actuated diverter valves to help distribute the flow. MAINTENANCE Check and clean all filters routinely. Flush system with clean water or slightly acidic solution several times a year at the beginning of each watering season. Check flushing valve periodically for sediments. Flush the Y-filter monthly. Check tubing for rodents, digging and other abrasion damage where surfaced tubing is visible. PAGE 1 9 Item 12.b. - Page 56 ..J -DRIP SYSTEM WITH PRESSURIZED SAND FILTER OPTION SUSTAINABILTY: ~ COMPLEXITY: ~ ~ ~ MATERIALS COST: $ $ $ controller >===~.p,otable water -----back flushing system"'- pumped surge tank TECHNOLOGY HIGHLIGHT • • Best suited for lawns, clay soils, and sloped sites Automated system with minimal maintenance or owner intervention Developed proprietary system with high rate of operational success drip irrigation . - \ J l ,~.,,! A subsurface drip irrigation system with pressurized sand filtration and automatic backflushing may be one of the best approaches for challenging projects. Drip systems with pressurized sand filtration require little maintenance compared to regular filter cleaning in surge tanks. The high degree of filtration (similar to swimming pool filtration) provides longer life of pumping equipment, drip lines, and emitters. Although relatively expensive and complex, this system achieves efficient irrigation with low maintenance. EXAMPLE OF Ji)ESIGN CALCULATIONS Total graywater flow ( 4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 200 x 1.22) Emitter spacing, using 14" spacing in all directions Minimum number of emitters (i.e., 244 + 1.36) 200 gallons per day (gpd) 1.22 gpd per square foot 244 square feet (sf) 1.36 square feet per emitter 180 emitters (spacing at 14" in all directions) Note: Further drip system design is required to ensure that the pump cycling meets the graywater flow rate. INSTALLATION & MAINTENANCE The drip irrigation system with pressurized sand filtration is similar to the basic drip system, using a automatic sand filter vessel under pressure, automated backflushing with potable water, and special emitter cones (instead of in-line emitters). Follow the manufacturer instructions (provided by ReWater Systems). Anticipated maintenance includes checking yearly and, as needed, replacing the sand filter media. PAGE 20 Item 12.b. - Page 57 SUSTAINABILTY: ~ ~ COMPLEXITY: ~ ~ ~ MATERIALS COST' $ $ $ Note: Water is not allowed to pond on the surface without authorization from the local health department of enforcing agency. [Ref 9] TECHNOLOGY HIGHLIGHT K -REED BEDS bed #J horizontal reed bed increases water transpiration & nutrient uptake through anaerobic micro-organisms bed #2_ vertical reed bed increases oxygen level which supports aerobic micro-organisms • Best suited for large areas with slow percolation rates • • Provides graywater treatment mimicking natural ecological systems Allows for better controlled plant growth and possible cultivation bed #3 oxidation pond water is clean enough at this point to support aquacultures (fish, frogs, etc.) [ref. 8] Reed Beds, also known as constructed wetlands, are man made, engineered, marsh like area designed and constructed to treat wastewater. Wetlands are cost-effective, ecological systems, and simple to both install and operate. Reed bed systems are best when soil percolation is very low, space is limited and there is a need to treat large volumes of water. Reed beds provide a home for bacteria, fungus and microbes that digest effluent while deterring flow and retaining suspended solids. Reed beds can be designed as either horizontal or vertical. Horizontal reed beds allow water to enter one side of the bed and flow slowly across and through bed until reaching outlet on opposite side, which then flows into another bed or percolates into the soil. Reed beds do not have much popularity in this country, thus partnerships and communication with the building department will be helpful. Vertical reed beds allow water to be evenly dispersed along the top of the soil profile. The water slowly percolates through a sandy, rock soil profile until it exits from ,below or simply percolates into the soil. Reed beds provide an ecologically based filtration of wastewater while providing higher biodiversity and beauty. Reed beds when mature host various species of plants, homes to butterflies, dragonflies and other important species. Plants can be harvested for textile and building purposes. In dry areas reed beds provide a contrast to otherwise arid lands. INSTALLATION Reed bed construction requires further research for proper design. Plant native species, such as members of the Cyperacae, Junacaece and Typhaceae families. Aquatic plant species should also be selected based on the following criteria: rapid and relatively constant growth rate, ease of propagation, capacity of absorption of pollutants, ease of harvesting, potential for usefulness of harvested material, high oxygen transport ability, tolerance to adverse climate conditions and resistance to pests and disease. Do not plant invasive species. Reed beds require a combination of vertical and horizontal reed beds. Horizontal beds increase water transpiration and nutrient, nitrogen and phosphorous, uptake through anaerobic micro organisms. Vertical reed beds increase the presence of oxygen which host aerobic micro organisms. All reed beds should have overflow zones for storm water conditions. After passing through the beds, install a pond supporting aqua-cultures for fish, frogs, and other ecology. PAGE 21 Item 12.b. - Page 58 K -REED BEDS cattail bulrush substrate ~ 6 to 12 inches ·:;:; 1~:,U.oj/Jf'j~ ;. ' -. .. -~~~~\-/(~-\' (15 to 30 cm):::~ ·.··· : I ~·. :} •• -.J' ·.-·. ·.· ....... :. '.:~:;~to 36 Inches (60to 90cm) Typical rooting depth -cattail and bulrush [ref. aJ Note: Water is not allowed to pond on the surface without authorization from the local health department of enforcing agency. (Ref 9J , bed depth: 12" for cattails 1 24" for reeds 30" for bulrushes inlet HORIZONTAL REED BED -· ---·-. -----. --. ----------~.---------------- water level in horizontal reed bed is 2 11 below the surface - gravel discharge --· ---------------------------------- j aeration __ ]~~~~~~~~~~~~~~~~~ rock large rock & gravel l 1 tube 1 I VERTICAL.REED BED oulet bottom J PAGE 22 Item 12.b. - Page 59 L -WASHING MACHINE SUMP SUSTAINABILTY: ~ COMPLEXITY: ~ MATERIALS COST: $ TECHNOLOGY HIGHLIGHT valve to SC!her or septic [ref. 7] --·-~--<--.c-------------------- 8'·0"min. sump 41 wide, G' long & 4' deep k 96 cubic feet. the mm required by the county Note emitters o-n-cards D.G,H,& I can be used mstead of a sump • • Best suited for all projects, especially remodels and existing construction with slab foundations Minimal material and equipment saves on costs • Basic system design allows for easy installation for most owners The washing machine sump, also know as a drumless laundry system, is a simple design suitable for all houses with a standard washing machine. San Luis Obispo County permits this system as an alternative to a full dual-plumbed system. Most washing machines are located on exterior walls with access already. Alternative designs may include adaptability to various distribution and irrigation options, such as the flower pot emitter. Be careful to ensure that the pressurized surge capacity is included in design. EXAMPLE OF DESIGN CALCULATIONS Washing machine flow (4-bedroom house) at Sandy loam soil (see Percolation Rate Table) at Required total area (i.e., 75 x 0.40) 75 gallons per day (gpd) 0.40 gpd per square foot 30 square feet Continue with design calculations for selected irrigation option, such as the mini-leachfield, flower pot emitter, mulched watering moat, SLO County sump permit, etc. Note: San Luis Obispo County permits require that the sumps have a minimum volume of96 cubic feet. For more information, please visit http://www.slocounty.ca.gov/planning/building/Building details info/septic.htm INSTALLATION Material List: l" brass three-way, 1" PVC pipe and fittings, check valve or "auto venf' used for air gap, swing check valve (if yard is higher than washer), 1" HDPE (black polyethylene plastic) tubing and barbed fittings, and l" and 1/2" ball valves The washing machine's internal pump pressurizes the graywater, so system can irrigate plants that are slightly uphill or further away along flat ground. Do not over stress the washing machine pump, which could require costly repairs. The washer hose is connected to a 3-way valve that can divert graywater either to the sewer or the graywater system. Use 1" rigid HDPE pipe to connect to the outside pipe. Split the flow using barbed Tee fittings to allow graywater to spread out to several freefall locations, such as the flower pot emitters, tree moats, or mulch basin. Drip irrigation will overburden the washing machine and most likely bum out the pump. MAINTENANCE Check irrigation emitters for clogging, especially lint material. Lint filters are available specifically for washing machines if lint becomes a problem. Ensure that the piping fiction and emitter elevations are not adding unnecessary friction resistance. Every 50 feet of run adds about as much resistance as 1 O" vertically. For example, a system that sends water through 100 feet of 1" pipe that ends up 12" lower in elevation than the lid is equivalent to pumping 8" above the lid of the washer (20" -12" = 8"). PAl3E 23 Item 12.b. - Page 60 M -IN HOUSE USE OF GRAYWATER SUSTAINABILTY: ~ ~ ~ COMPLEXITY: ~ ~ ~ MATERIALS COST: $ $ $ --shower', __ --~---- laundry bathroom sink graywater tank with pump & niter. cleanout valve bypass valv~ .µ Q) ·5 .µ ..c (/) ::J ti= 0 .µ >. a. a. ::J (/) gray 1 water holding tank TECHNOLOGY HIGHLIGHT • • • Paired with irrigation reuse, indoor reuse systems can significantly reduce potable water use Mainly used for toilet flushing Proprietary systems are readily available and easy to install toilet bath Indoor reuse of graywater systems are primarily designed to treat and reuse graywater for toilet flushing. Some systems collect all the graywater (such as in a dual-plumbed house), provide treatment at a central location, and redistribute the treated stream to all the toilets. Other systems provide a direct connection from the adjacent sink and either treat and temporarily store the graywater for later flushing or allow the graywater water to be fill up the toilet tank immediately prior to flushing. Providing finer filtration coupled with chemical, UV or ozone disinfection allows longer storage time with graywater for toilet reuse. While most indoor reuse have been for commercial projects, residential systems are becoming more popular. [Ref 91 Most systems for indoor reuse are complex and expensive, compared to the basic systems used for irrigation, but may have greater environmental impact. Highly treated graywater that meets a certain purification standard in Canada, for example, is allowed for some non-potable uses, such as showers and swimming pools. Units are available for single family, shared central system located at co-housing or apartments. DESIGN, INSTALLATION & MAINTENANCE Design, installation and maintenance of indoor reuse systems vary by manufacturer. Most systems are purchased through a vendor and installed by a professional licensed plumber. Some systems requires a minimum storage .tank, where similar installation requirements with a surge tank may apply. Maintenance may require filter cleaning, handling of chemicals, and checking for clogging. For example, the Brae system consists of a pump, filter, and holding tank. The Pontos AquaCycle system includes aeration, disinfection, and filtration as well. PAGE 24 Item 12.b. - Page 61 Planning l:J Estimate graywater flow (page 7) l:J Estimate graywater absorption area based on soil type or percolation test results (page 8) l:J Estimate distribution area for absorption l:J Plot plan to scale showing o Lot lines, structures, and slopes of surfaces o Location of drainage channels, supply lines, wells o Location of sewage disposal system if applicable, plus 100% expansion area o Location of graywater system consistent with standards on page 8 Surge tank (unless using a branched system) l:J Anchored on dry level compacted soil or on a 3" concrete slab l:J Capacity permanently marked on the tank l:J ''Graywater system -irrigation -danger unsafe water" permanently marked on tank l:J Drain & overflow permanently connected to sewer or tank system l:J Test surge tank to ensure it is water tight when filled Utilization system of your choice l:J Insure that installation conforms to the plot plan l:J Develop a maintenance manual and operating log, PAl3E 25 Item 12.b. - Page 62 SUMMARY The demand for potable water is increasing and at the same time, climate change is making the consistency of water supplies less predictable. The effect is an increase in demand for imported water from distant sources which is associated with energy intensive and ecologically disruptive processes. The alternative to importing water usually means increased pressure on the local aquifer resulting in aquifer depletion. This challenging situation forces us to produce and use water carefully. Reduce, reuse and recycle are concepts applied to consumer products; water should be thought of as one of these products, most importantly, it is the one product we must consume to survive. Graywater utilization is an important part of this effort to reduce, reuse and recycle water. Healthy and sustainable communities of the future will use graywater for all non-potable water uses such as irrigation and toilet flushing. Innovators today include REEF, well known for their contribution to the surfing industry, REEF's global headquarters in Carlsbad, CA, uses reclaimed water for irrigation and graywater for toilet flushing. Despite the fact that REEF doesn't own their building, they were able to integrate appropriate technologies yielding cost savings of $200 per month on utility bills and lots of water saved for the future! [SJ In 2008, 20% of the electricity consumed in California was used to move and pump water. On-site harvesting and treatment of water can greatly red1,1ce the amount of electricity used for this purpose. Graywater is but one appropriate technology that will enable us to meet the resource demands of today. REFERENCES 1. City of Malibu, Ca -Graywater Handbooks htni://www.ci.malibu.ca.us/index.c:fm?fuseaction=detailgroup&navid=274&cid=2949 2. Creating an Oasis with Graywater. Art Ludwig, Oasis Design, 2007. 3. Rainwater Harvesting for Dr_ylands and Beyond. Brad Lancaster, Rainsource Press, 2008. www.harvesting rainwater.com 4. 2009 California Plumbing Code-Appendix G 5. Carlsbad Magazine March/ April 2009 6. Carmichael Environmental Design/ Build 7. San Luis Obispo County Public Works Department 8. Constructed Wetlands in the Sustainable Landscape. Craig Campbell & Michael Ogden, Wiley & Sons, 1999. 9. Proposed Express Terms -Emergency CPC (Title 24, Chapter I 6A, Part!)-Graywater Standards. Housing and Housing and Community Development (HCD). July 1, 2009. PAGE 26 Item 12.b. - Page 63 1-···DETERGENTS FG'R. GRAYVlfATER SYl3TEMS When looking for appropriate detergents, read the following information regarding the contents. Is Biodegradable Better? The word biodegradable means that a complex chemical is broken down into simpler components through biological action. Do not be confused by the word biodegradable, which is often used to imply environmentally safe. Harmful chemicals as well as beneficial ones may be biodegradable. A Note About Chlorides Although chlorine in bleach and detergents is generally expended in the washing process, some may be left in the graywater that reaches plants. Chlorine should not be used in the garden because it may substitute for similar nutrients, blocking normal metabolic processes. The addition of chlorine to water used for irrigation should be kept to a minimum. Choose your detergents and clothes-washing products keeping in mind that it is better for your plants and soils to have a low alkalinity, boron, conductivity, and sodium content in the water. Personal preference may affect your choice of products since higher levels of these constituents may add to their cleansing ability. Alkalinity Alkalinity refers to the relative amounts of alkaline chemicals in a solution. Sodium, potassium, and calcium are alkaline chemicals; they often are combined with carbonates, sulfates, or chlorides. Plants do not tolerate high concentrations of alkali salts. Boron Boron is considered a plant micro-nutrient required in only very, very small amounts. Most soils provide adequate amounts of this chemical. Concentrations only slightly higher than those considered beneficial can cause severe injury or death to plants! Conductiyity Conductivity is a simple measure of the amount of dissolved chemicals in a solution. These chemicals can be beneficial or harmful. The higher the conductivity, the more dissolved salts and minerals are present. In general, the higher the concentration of dissolved salts and minerals in the water, the greater the potential for adverse affects on the environment and plant health. Sodium Sodium can act as a plant poison by reducing the plants ability to take up water from the soil. Too much sodium can destroy the structure of clay soils, making them slick and greasy by removing air spaces and thus preventing good drainage. Once a clay soil is damaged by sodium, it can be very difficult to restore it to a viable condition. Phosphate Phosphate is a plant food and is added to soil as a fertilizer. Soils in the San Luis Obispo area are typically low in phosphates; thus, there may be some benefit to plants if phosphate is present in graywater. However, this may be inaccurate since many forms of phosphate are not readily usable by plants and soils. Some recommended products are: Alfa Kleen Bold Oasis Bio Pac Cheer Free Ecocover Shaklee Basic L Sun Ultra White King Yes "- PA13E 27 Item 12.b. - Page 64 Plant List -some recommended species by hydrozone: Wetland Type--reeds. rushes. & sedges Carex sp.-Sedge species--C. tumilicola, C. spissa, C. Praegracilis, etc. Juncus sp.-Rush species-J. patens, J. effusus Equisetum sp.-Horsetail species-E. hyemale (plant in container to keep from spreading) Canna sp.--Canna species-Hybrid colors (plant in container to keep from spreading) *Chondropetalum elephantium--Cape Rush , Upland Type--herbs. shrubs. & trees Arbutus 'Marina'-Strawberry Madrone Tree Cercis occidentalis-Westem Redbud Myrica califomica--Califomia Wax Myrtle Rhamnus californica-Coffeeberry Heteromeles arbutifolia-Toyon *Rosmarianus officinalis-Rosemary Artiplex sp.-Salt Bush species Arctostaphylos sp.-Manzanita species Ceanothus sp.--California Lilac species Salvia sp.-Sage species-S. spathacea, S. 'Pt. Sal', S. elegans Penstemon sp.-Penstemon species-P. heterophyllus, P. digitalis Achillea sp.-Yarrow species *Lavandula sp.-Lavender species *Fragaria chiloensis-Beach Strawberry Grasses-used in both planting groups Mulhenbergia rigens-Deergrass 1 Festuca sp.-Fescue species-Blue Fescue, California Fescue Calamagrostis sp.-Reed Grass species--C. 'Karl Foerster', C. 'Overdam' Seslaria sp.-Moor Grass species-S. caerulea, S. autumnalis Note: more common edible plants can be used as long as no edible parts touch the actual graywater flow. The foods produced above ground from plants rooted in graywater are just as fit to eat as plants grown in drinking quality water. Do , not drink graywater! * Plants with an asterisk beside them are not native plants to California, but are climate appropriate species for San Luis Obispo County. PAGE 28 Item 12.b. - Page 65 ADAPTER: Any plumbing or drip irrigation part which connects one size pipe or part to another. Often used to refer to . the female fitting, whether glued or threaded, which joins i different parts together. ACTUATOR: A 24V DC motorized value, used to automatically control valves. Unlike a solenoid, this valve's opening and closing is powered by the motor, not the pressure in the pipe. Because it works without any water pressure in the pipes, it is the most practical valve for many graywater systems. AEROBIC SOIL: A well drained soil with sufficient pore space to allow plenty of air circulation. The pore space is usually dependent upon the texture (sand is most open) and a reasonable amount of organic matter and humus. ANIONIC SURFACTANTS: A cleaning agent, most commonly some form of sodium salt. Usually found in high sudsing detergents (see sodium chlonde). BALL VALVE: A valve which has a globe shaped rotating interior. The solid globe has a circular tunnel through it. When the handle of the valve is rotated, the solid portion of the ball cuts off the flow of water. Another rotation lines up the tunnel and water flows through the valve. Ball valves are often found at the discharge port of quality y-filters. Because ball-valves shear off any contaminants and because they don't easily wear out like gate valves, they are the preferred valve for graywater systems. , BEACHFRONT AREAS: Areas with a sand profile verses a soil profile. CENTRIFUGAL PUMP: A pump installed outside the surge tank, not submersed in the graywater. The centrifugal pump along with a diaphragm pressure tank should be housed in or under a weatherproof structure. CHECK-VALVE: A backflow preventer which stops any water siphoning back toward the house. Often not legal as the only backflow preventer in potable-water drip system. Must be coupled with some form of atmospheric vacuum breaker. DRIP: A style or technology of irrigation where a tiny trickle of water is slowly applied to the soil. DRIP HOSE ADAPTER: The first fitting after the main assembly of a drip irrigation system. Almost always an FHT (female hose thread) swivel X drip hose adapter. The female hose threads of the swivel go on to the male hose threads of a hose-bib or a transition mpple. The swivel action makes it easy to quickly add or remove this fitting. The other side of the adapter is either a slip (glue), or compression, depending on the system. DRIP LINE: A length of solid drip irrigation hose or in-line emitter tubing. DRIPLINE: The width ofa tree's or shrub's foliage, where water would drip off the edge of the canopy. Not an indicator of the width of the root system as roots grow from one half to three times wider than the dripline. DUAL PLUMBING: A permanent separate set of pipes for all the graywater sources in the home. ELBOW: A fitting which allows drip hose or pipe to make 90 degree turn. EMITTER: The little gizmos attached to or built in to solid drip irrigation hose which control the flow of water to the soil. There are many name brands that basically fall into four generic styles or technologies: single diaphragm, double diaphragm, tortuous (or complex) path, or simple orifice. END CAP: The fitting added at the end ofa lateral to make it easy to open the tubing for draining or flushing. Has a female hose thread cap with a washer which threads on to the male hose thread fitting. The other end will be either a compression, insert or other opening, depending on the system you use. EVAPOTRANSPIRATION (ET): The loss of water from a plant or crop via transpiration (exhaling) by foliage and evaporation from the plant's and soil's surface. The ET rate is influenced by humidity, rainfall, slope aspect, wind speed, temperature, plant care and soil. FIGURE EIGHT END CLOSURE: A simple end closure which involves threading the end of the drip hose through one side of the figure eight, bending over the end of the end of the drip hose and securing the bent end inside the other half of the figure eight. FILTER: A device with a screen (cheap, poor quality models have plastic screens) which is used to trap any particulates, dirt, or scum before it can enter the drainfield or clog the drip emitters. An essential component of all graywater drip systems. FHT: Plumbing shorthand for a female iron pipe thread. FLAPPER CHECK VALVE: A valve that prevents any water from siphoning back into the surge tank. ' GFI: A ground fault interrupt outlet. All sump pumps must be plugged into a GFI outlet. HEAD: A pump's head is the gross difference in elevation which it pumps. As a safety factor, the head for a graywater system is determined by adding the total changes, both up and down, in the elevation from the surge tank to the point of disposal. To this figure add at least 15% more feet of the total head. HOSE-BIB: Another name for a garden faucet. The standard gizmo on the pipe sticking out of the house's exterior wall or on top of a metal water pipe in the yard and onto which the garden hose is attached. Item 12.b. - Page 66 HOSE SHUT OFF VALVE: A small ball-valve which can be added at the end of a hose to control water without having to run back to the hose bib. With a few extra parts, this valve can be spliced into any drip hose and allow the gardener to exclude water from portions of a system. Often used to rotate graywater to different zones as needed. IN-LINE EMITTER HOSE: A more recent and effective type of drip irrigation hose where the emitters are manufactured inside the hose at regular intervals. The pre-spaced emitters use a tortuous path technology for water regulation without clogging. Water can be distributed at 1/2, I, and 2 gal/hr. rates at many separate intervals ranging from 12-72 inches. INSERT FITTING: These fittings have male-shaped parts with barbed exteriors which msert inside the drip irrigation hose. As the water pressure increases, the fitting is more likely to fail because the swelling drip hose can bloat away from the barbed posts. Must use a ring clamp to secure the hose against too much pressure. J-STAKE: A landscape pin used to secure drip irrigation hose, landscape nettmg and l 2v DC wiring. Made like the upside version of the letter 'J', not as sturdy as the best U-stakes. LABRYINTH: A complex, tortuous path inside certain emitters. The labyrmth of passages keeps any sediment in the water in suspension to pass out the emitter's orifice. All in-line emitter tubing uses some form of labyrinth to allow for a relatively large emitter orifice and to keep the emitter from clogging. LATERAL: A lateral is a water-bearing pipe or drip hose which originates as an offshoot of a main supply pipe. Laterals are usually attached to the supply header via a tee. MAIN ASSEMBLY: The collection of parts at the beginnmg of a graywater system which filters the graywater system to the , drip emitters and regulates the water pressure to keep the drip system intact. Composed of a filter and pressure regulator plus the miscellaneous parts needed to connect everythmg together. MAIN SWITCHING VAVLE: Amain valve 1s required to allow the homeowner to alternate between the graywater system and the septic tank or sewer. Use the main valve when the ground is 1 saturated with rainwater, when someone is ill with an infectious disease or the occupants don't want to use the graywater irrigation system. The main valve, whether manual or electro- mechanical, is best plumbed near the surge tank. MESH: Most drip irrigation filters are rated by mesh size. The larger the mesh number, the better the filtration because smaller particles can be trapped. Many metal screen filters are either: 60 mesh (254 microns or .01 inches), 100 mesh (152 microns or. 006 inches), 140 mesh (104 microns or .004 inches) or 250 mesh (61 microns or .0024 inches). Graywater systems should use a 200 mesh or better filter. MICRON: A common measurement for irrigation parts. The bigger the micron number, the bigger the opening. A single micron equals one-millionth of a meter. It takes 254 microns to equal .01 inches, which is a 60 mesh screen. Most graywater systems should have a 75 micron or better filter. MIPT: Plumbing shorthand for a male iron pipe thread. NIPPLE: Comes in plastic and iron versions with male iron pipe threads on each end. Plumbing nipples range in size from 3/4 inches to 48 inches. Used to join twQ female iron pipe threads together. OVERFLOW PORT (AUTOMATIC): An overflow pipe near the top of the tank dumps graywater to the sewer or septic tank in case something clogs the surge tank or the sump pump fails. PATHOGENS: Disease causing organisms. To become infected, an individual must be exposed to a large enough dosage and be vulnerable to the pathogen. Most pathogens can reside out of the body of a host, in the soil, but each disease has a different life span in the soil. PERCOLATION TEST: A test to determine the abiiity of the soil to accept graywater. The test is only required at the request of the City Health Officer. Percolation tests can be useful but they may not reflect long term acceptance rates. PHYTOPHTHORA: Genus of various species of fungal diseases which attack the upper portion of the roots to destroy the bark's active layers of transport. Often called crown rot. POROUS HOSE: Unlike an emitter, where the water dribbles out at select points; the water in porous drip hose oozes out through the entire surface area of the hose's walls. The genre of drip hose only works well with chlorinated city water because it's so prone to getting clogged by sediment and becoming sealed off internally due to the build-up of various types of algae slimes. Not recommended at all with graywater, no matter how well filtered. POTABLE WATER: Fresh drinking water, city or pure well water. PRESSURE COMPENSATING EMITTER: A special type of emitter engineered so that the flow rate stays the same regardless of the length of the line (up to a point) and any change in elevation. Required when irrigating landscapes with a total elevation change of 20 feet or more. PRE-FILTER: Usually a basket with a mesh bag which catches most of the offending lmt, hair and particulates before entering the surge tank. Its filtering surface area should be at least 2 square feet so that it does not clog quickly. The bigger the pre- filter, the better. Must be used with a graywater drip irrigation system. PRESSURE REGULATOR: A gizrno which reduces the water pressure in a graywater drip irrigation to 25 psi or lower to protect the subsequent drip irrigation fittings. Must be installed i every main assembly. D Item 12.b. - Page 67 PSI: Pounds per square inch, the unit of measure for water pressure. Typical home water pressure is 40-80 psi. Drip irrigation systems generally operate at 11-25 psi. PVC: A type of semi-rigid plastic that is made from polyvinyl chloride which is often used for garden plumbing. Some of the more common grades of this pipe (from the sturdiest to the weakest walls) are Schedule 80, Schedule 40, Class 200 and Class 120, which resist bursting up to, respectively, 800, 400, 200 and 120 psi. SALINE WATER: Irrigation or ground water which is high in salt (sodium chloride). While saline water is useful in many medical applications, it is not healthy for many plants. Graywater can be particularly saline due to the salts in many detergents, especially powdered detergents. SCH: Shorthand for 'schedule'. Used to denote the type or grade of PVC pipe and fittings. SLIP: A PVC fitting with an opening which requires glue, as opposed to threads with pipe dope, to 'weld' the two parts together. Usually the end of the rigid PVC irrigation pipe and the fitting are moistened with PVC glue and the pipe is slipped into the wet round opening of the waiting fitting. SOLENOID: An electric valve used to control drip irrigation systems. The wires to the solenoid usually carry 24 volts of AC power. The irrigation controller has a transformer to step down the house current. It is dependent on the static line pressure of the water supply to assist in the opening and closing of the valve, therefore they often can't be used with a graywater system unless the system is fully pressurized at all times. SPAGHETTI TUBING: A tiny or slender type of polyethylene tubing which can be used to distribute water to emitters or plants. Comes in 1/4 and 1/8 inch diameters. Because of this tubing's propensity to twist around itself, it will make a tangled mess in the landscape. Can be controlled when used in container plantings. SUB-SYSTEM: A branched system of drip irrigation laterals originating from a main supply line or header. Unlike a single lateral, a sub-system, also called a sub-main, has several subordinate lines all connected by tees in a pattern similar to the lines on a sheet of music. SUBMERSIBLE HIGH-HEAD EFFLUENT PUMP: A 4 inch diameter submersible turbine pump made of stainless steel and high quality thermoplastics specifically for pumping wastewater effluent. Develops higher pressures than sump pumps. SUMP PUMP: A pump designed to be submerged in water, to automatically tum on when the water reaches a predetermined level and to pump the water a certain maximum height and distance at a specific rate in gpm of gph. Installed in the surge tank. SUPPLY HEADER: The solid plastic pipe, solid drip hose or \..in-line drip irrigation hose which supplies one or more laterals. PAGE 3 1 SURFACE: Refers to the top of a thick permanent mulch covering the soil or the top of an un-mulched soil. Graywater must not daylight on the surface. SWIVEL: The rotating fitting that can be screwed onto another fitting. Usually refers to female hose threads which are threaded onto the end of a hose, hose-bibs or drip irrigation parts. Usually requires a rubber gasket in the swivel to prevent leaks. TEE: A fitting which joins a lateral line (solid PVC pipe, in-line emitter tubing or solid drip hose) to another water supply line. THREE WAY SWING DIVERTER VALVE: A spa type swing gate valve which comes in manual form or with a 24V DC actuator for automatic control. Used to divert graywater flow from one zone to another zone. TIMER: A battery powered controller which controls one irrigation line. Attaches to the hose-bib and controls the flow of water to a hose or drip irrigation system. TORTUOUS PATH EMITTERS: Drip irrigation emitters with a complex, tortuous or labyrinth path within the emitter which allows larger particles to flow through the emitter without clogging. Best emitter for use with graywater and one of the more recent developments in drip technology. TRANSITION NIPPLE: A plastic or metal fitting with a male hose thread and a male iron pipe thread used to connect conventional garden plumbing to drip irrigation fittings. TWO-WAY SWING DIVERTER VALVE: A spa type swing gate valve which comes in manual form or with a 24V DC actuator for automatic control. Tums graywater flow on and off. U-STAKE: A landscape pin used to secure drip irrigation hoses, landscape netting and 12V DC wiring. Shaped like an inverted 'U', sturdier than the J-stakes. UNION: Related to a coupling, a union is a plumbing part which, after unthreading the locking ring, separates into two pieces and allows you to take a portion of any irrigation system (providing there is a union on each end of the section) out for repairs without having to cut the pipe. The use of unions allows for the quick reinstallation of the repaired section without having to re-glue with extra fittings. WET SPOT: The wet spot in drip irrigation has both depth and breadth, the extent of which is dependent upon the rate of the dribble (m gph), the duration of the trickle (in hours), the soil type, the slope of the land and the climate. Y-FILTER: The best type of filter for a graywater drip irrigation system Easily identified by the filter chamber which is integrated into the filter at an obtuse angle. The best y-filters have a metal-screen filter within the filter chamber to make 1t easy to flush out the screen. Item 12.b. - Page 68 ATTACHMENT 3 D Item 12.b. - Page 69 'OTYOF GR~Y ~rucsoN RESIDENTIAL SmartScape 4210N CampbellAvenue Tucsan,AZB57191109 Phona (5201626 5161 Fu 1520)626 5849 INFORMATION GUIDE Tucson Water 310WAlameda Tucson,AZ85701 Phone (52017914331 tucsonazgov/water/conservat1on City of Tucson Pl•nnin9 and Development Servm1a 201 N Siona Avenue Tucson,AZ85701 Phone 152017915550 tucsonaLgov/dsd CA CityofTucsonotficeor Q'W'• CONSERVATION AllD 'fil SUSTAINABLE DEVELOPMENT City of Tucson Office of Conservation and Sustainable Development 255 W Alameda {4th Flaor) -Tucson, AZ 85701 Phone 1520) 7914675 tucsonazgov/ocsd If you require material man accessible format er m another language other that Enghsh, tall Tucson Water at (520) 791 4331 or City of Tucson TOD 1520) 791 2639 Item 12.b. - Page 70 What is Gray Water? .......................................................... 6 Gray Water Ordinance ......................................................... 7 City of Tucson Ordinance 10579 State ............................... 8 Attachment A ..................................................................... 9 Tucson Residential Use of Water ....................................... 10 Implementation Details ..................................................... 11 Gray Water & Black Water Chart... ................................... 12 City of Tucson/State of Arizona Regulations ..•.................. 13 ADEQ Requirements/Best Management Practices ............• 14 Deciding to Use Gray Water .............................................. 15 Designing the System ...................................................... 16 Determining the Type of System Needed .......................... 17 Gray Water System Components ....................................•. 18 Culvert System ................................................................. 19 Irrigation Methods ............................................................ 20 What Can I Irrigate? ......................................................... 21 Detergent Choices ............................................................ 21 Maintenance ..................................................................... 22 FAQ .................................................................................. 23 Landscape Design ..........................................................•.. 24 Resources ........................................................................ 26 Item 12.b. - Page 71 WHAT IS GRAY WATER? tl Gray water is the water that flows from the drains of hand-washing lavatories, showers, bathtubs and clothes washing machines. iJ Gray water is NOT the water that comes from toilets, dishwashers, laundry sinks* or the kitchen sink. Gray~mli®u G ·ay~01@U Grey ~@li®rr· Greywmli®u • Laundry sinks tend to be used for chlorine bleach and other chemicals not suitable for gray water use. PLANNING AND DEVELOPMENT SERVICES DEPARTMENT Residential Plan Review GRAY WATER ORDINANCE On October 14, 2008, Mayor and Council unanimously voted to require all new residences to be built with gray water capabilities. Starting June 1, 2010, all new single family homes and duplexes must include, on the plans, plumbing for future gray water distribution. These new rules are part of Tucson's effort to promote water conservation and efficient use of water resources by the City and its residents. Gray water 1s water previously used by the interior of the house, from clothes washers, bathtubs, showers, or bathroom sinks and reused for outdoor irrigation. Using this recycled water can save a typical household 13,000 gallons of potable water a year. The code changes for Residential Gray Water are now in place. Here's what the rules require: 1. On all new residential plans for single family and duplex dwellings, show either a separate multiple pipe outlet or a diverter valve and an outside "stub-out" installation on clothes washing machine hook-ups. 2. For all new single family dwellings, show a building drain(s) for lavatories, showers, and bathtubs, separate from all other plumbing fixtures, with a connection a minimum of three (3) feet from the edge of the foundation. 3. All gray water systems need to be designed and operated according to the provisions of permits authorized by ADEQ under the Arizona Administrative Code, Title 18, Chapter 9. http://www.azdeq.gov/environ/water/permits/download/graybro.pdf Item 12.b. - Page 72 CITY OF TUCSON ORDINANCE 10579 STATES ADOPTED BY THE MAYOR AND COUNCIL September 23, 2008 ORDINANCE NO. 10579 RELATING TO BUILDINGS, ELECTRICITY, PLUMBING AND MECHANICAL CODE; CREATING THE •RESIDENTIAL GRAY WATER ORDINANCE" REQUIRING INSTALLATION OF GRAY WATER ·sruB-OUTS" IN RESIDENTIAL CONSTRUCTION; REQUIRING THAT GRAY WATER SYSTEMS COMPLY WITH APPLICABLE REGULATIONS; AMENDING TUCSON CODE CHAPTER 6, ARTICLE 111 DIVISION I BY AMENDING SECTION 6-38 AND ADDING SECTION 2602.1.2, "GRAY WATER STUB-OUTS", AS A LOCAL AMENDMENT TO THE INTERNATIONAL RESIDENTIAL CODE; AND DECLARING AN EMERGENCY. WHEREAS, the State of Arizona's Department of Environmental Quality instituted a general permit for homeowners whose gray water systems meet the Best Management Practices; and WHEREAS, gray water systems constructed and operated according ta these Best Management Practices provide a safe method of reducing water demand; and WHEREAS, gray water is a valuable resource as it makes "double use" of water that otherwise goes dawn the drain. Gray water systems divert same mteriar water from clothes washers, bathtubs, showers or bathroom sinks (but not from a kitchen sink, dishwasher or toilet) for use in outdoor irrigation, and WHEREAS, gray water systems -which recycle household water ta a spat where it can be used outdoors-can save a typical household 13,000 gallons of potable water per year; and WHEREAS, installation of stub-outs at the time of constructions greatly facilitates the use of gray water in residences; and WHEREAS, a desert community should do everything possible ta conserve water and promote efficient use of water resources. BE IT ORDAINED BY THE MAYOR AND COUNCIL OF THE CITY OF TUCSON, ARIZONA, AS FOLLOWS: SECTION 1. This ordinance shall be known and referred to as the "Residential Gray Water Ordmance.'' SECTION 2. The Tucson Code Chapter 6, Buildings, Electricity, Plumbing and Mechanical Code, Article Ill, Buildings, Division 1. Bmlding Code, Section 6-38, Residential code adopted, International Residential Code 2006 as adopted by Ordinance 10417 with amendments, is herby amended by adopting a new section 2602.1.2 as set forth in Attachment A to this ordinance incorporated here as if fully set forth herein. SECTION 3. The Director of Development Services is authorized to adopt appropriate rules, regulations and Development Standards necessary to implement the provision of this ordinance. SECTION 4. The provision of this ordinance may be modified or waived when it can be satisfactorily demonstrated ta the Building Official that compliance with these regulations is impractical due ta construction or other physical constraints and an acceptable alternative method of compliance that allows gray water usage 1s proposed. SECTION 5. The provisions of Sections 1 through 4 of this ordinance apply ta construction bmlt pursuance ta permits issued after June 1, 2010. SECTION 6. The various City officers and employees are authorized and directed ta perform all acts necessary or desirable to give effect ta this ordinance, including, but not limited to, providing an instructional pamphlet setting forth in plain language the requirements of this ardmance. SECTION 7. If any of the provisions of this ordinance of the application thereof ta any person or circumstance is invalid, the invalidity shall not affect other provisions or applications of this ordinance which may give effect without the invalid provision or circumstance, and ta the end the provision of this ardmance are severable. SECTION 8. WHEREAS, it 1s necessary far the preservation of the peace, health and safety of the City of Tucson that this ordinance becomes immediately effective, an emergency is hereby declared ta exist and this ordinance shall be effective immediately upon its passage and adaption. PASSED, ADOPTED AND APPROVED BY the Mayor and City Council of T ucsan, Arizona, September 23, 2008. MAYOR: Robert Walkup ATTEST: CITY CLERK: Chief Deputy City Clerk Deborah Rainone APPROVED TO FORM: CITY ATTORNEY: Mike Rankin REVIEWED BY: CITY MANAGER: Mike Letcher LK/kr 9/17/2008 10:16 AM 2602.1.2 "Gray Water Applications" 1. All new single family and duplex residential dwelling units shall include either a separate multiple pipe outlet or a diverter valve, and outside •stub-out" installation an clothes washing machine hook-ups, ta allow separate discharge of gray water for direct irrigation. 2. All new single family residential dwelling units shall include a building drain or drains for lavatories, showers, and bathtubs, segregated from drams for all other plumbing fixtures, and connected a minimum of three (3) feet from the limits of the foundation, to allow for future installation of a distributed gray water system. 3. All gray water systems shall be designed and operated according ta the provisions of the applicable permit authorized by ADEO under the Arizona Administrative Code, Title 18, Chapter 9. SUMMARY ORDINANCE GOALS: ../Conserve the desert's most precious resource . ../Reduce using potable water for outdoor watering. Item 12.b. - Page 73 TUCSON RESIDENTIAL USE OF WATER Using Gray Water can have an impact on the City of Tucson's overall water usage. Of the total amount of waste water produced in a typical home, 13 percent is from the washers, 10 percent is from faucets and 9 percent is from showers totalling 32 percent that can be re-used as gray water for landscape plants. When all gray water sources are being used , that water can replace the 45 percent of the landscape irrigation needs of an average single family home . This number varies widely based on irrigation efficiency, local climate, household occupancy, occupants habits, lot size and extent of landscaping . AVERAGE TOTAL WASTE WATER PRODUCED IN A RESIDENTIAL HOME 10 Outdoor 45% ,---------Others 2% --...,.. ____ Leaks 7% Washers 13% Faucets 10% Shower 9% KEY DETAILS OF THE GRAY WATER All new single family dwellings will be plumbed to collect gray water with a separate outflow pipe for you to attach your gray water irrigation system. Although the home will be preplumbed for gray water use, it is up to the homeowner to install an irrigation system to use the gray water. A permit is required from the City of Tucson Planning and Development Services Department in order to tap the building drain or gray water line and divert the gray water to an irrigation system . The washing machine stub-out should be above grade to allow for gravity flow. All new single family and duplex dwellings shall include either a separate multiple pipe outlet or a diverter valve, and an outside "stub-out" installation on clothes washing machine hook-ups, to allow separate discharge of gray water for direct irrigation . The gray water outflow pipe should be connected to the black water pipe a minimum of 3 feet from the limits of the foundations to allow future installation of the gray water irrigation system. TION Gr1y Water Tank Connected to Gray Water Pipes Pufup To Landscape Contact the City of Tucson Planning & Development Services Department at (520) 791 -5550 to find out if a permit is needed . · A permit is not required to tap into a pre-existing gravity stub -out from the washing machine. · A permit is required to modify drainage plumbing/piping from any fixture. · Homeowners may perform plumbing work on their own residence . Otherwise, licensed contractors must be used . 11 Item 12.b. - Page 74 12 GRAY WATER & BLACK WATER ASTER BEDROO DfN • = Black W1ter Piping = Gray Wate r Piping PATIO ITCHE LIVING ROOM PORCH -_______________ (91 Gray Water Connect ed To Black Water Pipe To Sewer REGULATIONS FOR GRAY WATER USE The Ar izona Department of Environmental Quality governs gray water use OUTSIDE the home . The City of Tucs on Regulat ion s cover gray water plumbing INSIDE the home . PUBLIC (Builder, Contractor or Homeowner) II ADEO CITY OF TUCSON REGULATIONS ALLOWING GR AY WA TER ORDINANCE GR AY WATER USE (H OMEOWNER/RESIDENT) (BUI LDER/CONTRAC T OR I v v v v v v v v DISTRIBUTION PLUMBING OUTSIDE IN SIDE v v v v v v v v PERMITTING PERMITTING TYPE 1 GENERAL COMPLIAN CE WITH ORDINANCE & PLUMBIN G (PAPERLE SS) COD ES OUTSIDE THE HOME INSIDE THE HOME 13 Item 12.b. - Page 75 GRAV WATER USE MUST ABIDE BY UIRE TYPE 1 GENERAL PERMIT BMPS Follow these best management practices to comply with Arizona's rules for gray water use . 14 first and foremost , avoid human contact with gray water, or soil irrigated with gray water. You may use gray water for household gardening, composting, and lawn and landscape irrigat ion , but use it in a way that does not run off your own property. Do not surface irrigat e any plants that produce food, except for citrus and nut trees . Use only flood or drip irrigation to water lawns and landscaping . Spraying gray water is prohibited. When determining the location for your gray water irrigatio n, remember that it cannot be in a wash or drainage way . Gray water may only be used in locations where groundwater is at least five feet below the surface . Label pipes carrying gray water under pressure to eliminate confusion between gray water and drinking water pipes . Cover, seal, and secure surge tanks to restrict access by small rodents and to control disease car rying insects, such as mosquitoes. Gray water cannot contain hazardous chemicals such as antifreeze, mothballs or solvents. Do not include wash water from greasy or oily rags in your gray water. Surface accumulation of gray water must be kept to a minimum . Gray water from washing diapers or other infectious garments must be discharged to a residential sewer or other wastewater facility , unless it can be disinfected prior to its use . Should a backup occur, gray water must be disposed into your normal wastewater drain system . To avoid such a backup, consider using a filtration system to reduce plugging and extend the system 's lifetime . If you have a septic or other on -site wastewater disposal system, your gray water use does not change that system's design requirement s for capacity and reserve areas . USE YOUR GRAV WATER IF You want to conserve water. You want to lower your water bill. Your landscape design can accomodate the amoun t of gray water your home produces . See Page 16 to determine the quantity of gray water you will be producing. You have enough pla nts to use it all! DON'T USE YOUR GRAV WATER IF X You have a water softening system that uses sodium. Sodium , as part of so dium chloride used in softening systems, is harmful to plants . Potassium chloride can also be used in water softeners and has found to be easier on the plants . However, it may inc rea se the total dissolved solids (TOS) of the water that could accumulate in the soils causing plant health problems in the future. X There is a resident who has an infectious disease. Since the gray water from many systems is not treated, bacteria and viruses from infected people may get into the gray water system and cause further con ta minat ion . If there is someone in the household who is sick, the gray water system should be bypassed . X You are washing diaper s that are not disinfected. Diapers contain fecal matter that would not get treated in the gray water system. Water from the washing machine used to clean diapers should be bypassed to the sewer system to prevent contaminating the gray water system. 15 Item 12.b. - Page 76 DESIGNING THE GRAY WATER SYSTEM HOW TO DETERMINE THE AMOUNT OF GRAY WATER THAT MAY BE PRODUCED. There are a number of methods to determine the amount of flow generated from gray water. This is important to know so that the irrigation system is designed properly along with the landscaping . The estimate may be calculated using the bedroom count to estimate the number of possible occupants. The bedroom count formula may be used to determine the amount of gray water that may be produced in a household . The estimations are in gallons per person , per day, also known as gallons per capita per day (gpcd). 1. 2. The first thing you need to determine is the number of occupants there are in the dwelling . One common method utilized is by bedroom count. For example , the first bedroom has 2 occupan ts, and each additional bedroom has 1. Next calculate the estimated gray water flow for each occupant. It can be assumed that showers , bathtubs and wash basins use 25 gpcd and 15 gpcd is used from laundry. 3. Then multiply by the total number of occupants . Example A: A single family dwelling that has 3 bedrooms with the showers, bathtubs, wash basins and a washing machine all connected to the gray water system : Total number of occupants -2 + 1 + 1 -4 Estimated gray water flow -4 x (25 + 15) - 160 gallons per day (gpd). Example B: A single family dwelling that has 4 bedrooms with only the washing mach ine connected to the gray water system : Total number of occupants -2 + 1 + 1 + 1 -5 Estimated gray water flow -5 x 15 -75 gpd AVERAGE GRAY WATER AMOUNTS: / 32 % of the typical household wastewater v generated is gray water . ~The average is 28 gallons /person /day . 16 DETERMINE THE TYPE OF SYSTEM NEEDED Graywater systems may be (a) pressurized with a pump, or (b) gravity fed. Either method can be used . A major limiting factor of a gravity fed system is sufficient slope on the property to allow proper gray water flow . TO SEWER llTtNEI Slll DISC HAIGETD llACl WATEI A common and easy gravity design that doesn 't have slope limitations is just connecting the irrigation system to the washing machine only. WATUCLO SET DISCM ARCETO BUCK WATE R LAVATOR Y DI SC MARliE TO li U.YWATER "-------l 17 Item 12.b. - Page 77 18 COMPONENTS OF A GRAY WATER SYSTEM SURGE TANKS Surge tanks are not a mandatory part of all gray water systems , but use of a surge tank allows the water to surge into the tank and be slowly released into the landscape without causing soil erosion . FILTERS Filters are a recommended component of gray water systems. The filter will catch clothes fibers that are in the clothes washing machine water. PUMPS When a tank is used to capture the gray water leaving the home , a pump will be necessary . A pump allow s the system to be pre ss uriz ed and improves the effic iency of the irrigation system by allow ing greater control of water distribution. SPECIAL FITTINGS Special fittings may be required for gray water systems to function properly . These fittings may be : 3-waydiverter valve BACK FLOW Double Elbow fitting may be best for the gravity splitter PVC Ball /Valve s/ Pipes may be used for pressure /pumped systems If a pump is used to distribute the Gray Water, a reduced pressure backflow assembly needs to be install ed on the potable water meter connection to protect the public potable water system. CULVERT SYSTEM GRAY WATER FILTRATION AND PUMP SYSTEM TO IRRIGATION Incoming Gray Water Overflow Pipe to Sewer Or Wastewater System " Float in Surge Tank Activates Pump Pump Pushes Gray Water From Surge Tank Through Sand Filter Backwash Line From Sand Filter to Overflow Pipe Manual Switch For Backwash Flow 2" PVC Pipe Carries Filtered Gray Water to Irrigation Area ~ Note: Pipe RoutinJI Has Been Simplif11d for Clarity " Item 12.b. - Page 78 20 GRAY WATER DISTRIBUTION METHODS SURFACE OR SUB -SURFACE IRRIGATION: Drip irrigation is the most efficient method of landscape watering with gray water. If this method is chosen , it is recommended that a filter is used to prevent clogging of smaller line s and emitters. Gray water drip emitters should have a larger opening to prevent clogging. SURFACE IRRIGATION Direct water from the outlet onto the plants can be used . Additionally, through surface grading modifications channels, basins , berms and check dams can be utilized . SUB-SURFACE IRRIGATION Drip irrigation is the most efficient method of landscape watering with gray water . Connect the gray water to a buried irrigation delivery system such as drip lines or bubblers that do not spray. WHAT CAN I IRRIGATE? Many plants that are on the Ar izona Department of Water Resources Low Water Use Plant List can be watered with gray water. The entire list can be found at www.azwater.gov/AzDWR/ Watermanagement/AMA s/LowWaterUsePlant list. htm#Tucson Gray water can be used to irrigate fruit trees, groundcovers, ornamental trees and shrubs and some bedding plants , such as : begonias , petunias, impatiens and geraniums . Salt-tolerate plants such as oleander, bermuda grass, date palms, and native desert plants , excluding cacti , are well suited to irrigation with gray water . Do not surface irrigate any plants that produce food except for citru s and nut trees . Avoid using gray water on plants that are salt sensitive or need ac idic soil s. The water chemistry of graywater is alkaline and has a higher salt concentration. Avoid using gray water on plants that prefer acid conditions such as : ash , azalea , dicentra , foxglove , gardenia , hibiscus, philodendron , primrose , rhododendron , hydrangea , oxalis , violet , camelia , xylosma , and ferns. Sandy soils are less vulnerable to damage than clay soils because they drain better. In very low rainfall areas , apply fresh water occas ionally to leach out accumulated salts . Be aware that some harmful effects are not always visible immediately and take one or two years to appear. In any case, you should always pay attention to the health of the plants being irrigated and discontinue using gray water if signs of stress are observed . Most detergents contain high levels of dis solved salt s and boron. Dissolved salts in the irr igation system can devastate the plants root system . Select a low sodium, no boron , no chlor ine, low alkalinity detergent. Examples of detergents • that may work for your home are : Alfa Kleen All Regular Bold ERA Plus Oasis Shaklee Yes •SOURCE : ·Grt y W1ttr i nd Yo ur D11er1enr by Tucson Water, co pyrig ht 1993 THE #1 RULE WHEN UTILIZING ./Do Not Spray Gray Water GRAV WATER: 21 Item 12.b. - Page 79 !1 All gray water systems require maintenance. The amount and type of maintenance will be dependent on the system. Installation of a filter that is maintained by routine washing will prevent the system from clogging with lint and debris. Gray water flow may be blocked for a number of reasons li .e., plant roots , build -up of silt and lint), the irrigation pipes will need routing flushing and/ or replacement. A properly built gray water system will direct the overflow back into the sewer system rather than onto the ground . The gray water system should be routinely flushed, about once a year or if you notice a foul odor. An easy and safe way to flush the system is by running water from the bathroom or the clothes washer rinse cycle lno detergents). While doing the flushing, watch to make sure everything is working properly . Routine flushing with rainwater or potable water also washes accumulated salts . Gray water tanks utilizing pumps will need to be monitored for water levels to prevent pump damage. For example if the water level is too low and the pump continues to run, it will fail. The gray water system should be checked on a monthly basis to ensure all the components are properly functioning: 1. Inspect the tank to ensure that it is not housing vectors such as mosquitoes or rats! 2. Check that the pump is working properly and the float switch has free movement. 3. Indications of possible system malfunctions : Surfacing water accumulation from subsurface irrigation systems , OR Water that is ponding too long !more then 12 hours) FREQUENTLY ASKED QUESTIONS This is a new ordinance that combines both City of Tucson and Arizona Department of Environmental Quality rules with Uniform Plumbing Codes !UPC). Some details in the implementation of this ordinance are in the gray area . The City of Tucson understands that some components may have to be adjusted over time . Please contact City of Tucson Planning and Development Services at (520) 791-5550 for additional guidance. For backflow questions. contact Tucson Water at (520) 791 -2650 . WILL THE STUB-OUT BE MARKED? No. Each home will have two gray water stub-outs. The gray water line coming from the bathtubs, showers and lavatories will be located underground near the building's main waste clean -out. The gray water line coming from the washing machine will be located on an exterior wall above grade near the washing machine. Call Tucson Water at (520) 791 ·4331 for gray water sign information. DO GRAY WATER SYSTEMS REQUIRE SIGNS? Yes . If the building's gray water is used for irrigation purposes, a sign must be posted to identify the water is for non-potable use. The City of Tucson will provide the initial sign. Replacement signs are the responsibility of the gray water user. IS THERE A COLOR DESIGNATED FOR GRAY WATER SYSTEM COMPONENTS? Yes . All non -potable water distribution lines must have purple markings. The gray water drain lines under the building are not required to be specifically marked . WHAT PLUMBING DEVICES ARE APPROVED FOR CONNECTIONS? Only bathtubs, showers, lavatories land hand sinks) and washing machines are permitted to be used for gray water collection. CAN FITTINGS THAT ARE NOT SPECIFICALLY APPROVED FOR GRAY WATER USE BY THE UPC BE USED? Non-listed fittings and fittings used in non-listed fashion will be reviewed by the Building Official on a case -by-case basis under an appeal process . WHAT IS .. .? Potable Water Water that is suitable for drinking , cooking and personal bathing . Black Water Wastewater containing fecal matter and urine. Reclaimed Water Wastewater that has been treated to remove solids and certain impurities, and then used for landscape irrigation or to recharge groundwater aquifers . Gray Water Wastewater that is collected from the drains of hand -washing sinks, showers , bathtubs and clothes washing machines. 2l Item 12.b. - Page 80 LANDSCAPE DESIGN EXAMPLE 24 -~ e1~ O'F f';e..~t>\:5.e.. I-~uAJ=A \ -LHOC.o \.ATE FLOW~ 1-c.ttAPA.~L.. ~t G.K.Jt..'1- \N A~ ~~l,, ~K \'\J\n\ · 112£1e:,A.nQPoJ UME~ ILLUSTRATION BY : Ann Williams, Distinctive Desert Designs 25 Item 12.b. - Page 81 RESOURCES ONLINE: Cl Tucson Water www.tucsonaz.gov/water/conservation o Tucson Water Backflow Questions www.tucsonaz.gov/water/backflow o Arizona Department of Environmental Quality www.azdeq.gov o Rainwater Harvesting for Drylands and Beyond www.harvestingrainwater.com o Oasis Design www.oasisdesign.net o ReWater• System Inc. www.rewater.com o Water Environment Research Foundation www.werf.org/AM LITERATURE: o 0 Branched Drain Greywater Systems," by Art Ludwig, copyright 2000. o 0 Builder's Greywater Guide," by Art Ludwig, copyright 1995. D °Create an Oasis with Greywater," by Art Ludwig, copyright 1994 Art 1994·2005. Z6 NOTES: Item 12.b. - Page 82