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492.8 BARCLAYS CALIFORNIA CODE OF REGULATIONS Title 23
<br />(S) Check valves or anti -drain valves are required on all sprinkler
<br />heads where low point drainage could occur.
<br />(T) Areas less than ten (10) feet in width in any direction shall be irri-
<br />gated with subsurface irrigation or other means that prcxluces no ntnoff
<br />or overspray.
<br />(U) Overhead irrigation shall not be permitted within 24 inches of any
<br />non -permeable surface. Allowable irrigation within the setback from
<br />nein--permcable surfaces may include drip, drip line, or other low flow
<br />non -spray technology. The setback area may be planted or unplanted.
<br />The surfacing of the setback may be mulch, gravel, or other porous mate-
<br />rial. These restrictions may be modified if:
<br />1. the landscape area is adjacent to permeable surfacing and no runoff
<br />occurs; or
<br />2. the adjacent non -permeable surfaces are designed and constructed
<br />to drain entirely to landscaping; or
<br />3, the irrigation designer specifies an alternative design or technology,
<br />as part of the Landscape. Documentation Package and clearly demon-
<br />strates strict adherence to irrigation system design criteria in Section
<br />492.7 (a)(1)(I]. Prevention of overspray and runoff must be confirmed
<br />during the irrigation audit.
<br />(V) Slopes greater than 25% shall not be irrigated with an irrigation
<br />system with a application rate exceeding 0.75 inches per hour. This re-
<br />striction may be modified if [lie landscape designer specifics an alterna-
<br />tivc design or technology, as part of the Landscape Documentation Pack-
<br />age. and clearly demonstrates no runoff or erosion will occur. Prevention
<br />of runoff and erosion must be confirmed during the irrigation audit.
<br />(2) Hydrozone
<br />(A) Each valve shall irrigate a hydrozone with similar site, slope, sun
<br />exposure, soil conditions, and plant materials with similar water use.
<br />(B) Sprinklerheads and otheremission devices shall be selected based
<br />on what is appropriate for the plant type within that hydrozone.
<br />(C) Where feasible, trees shall be placed on separate valves from
<br />shrubs, g=roundcovcrs, and turf to facilitate The appropriate irrigation of
<br />tunes. The mature; size and extent of the root zone shall be considered
<br />when designing irrigation for the tree.
<br />(D) Individual hydrozottes that mix plants of moderate and low water
<br />use, or moderate and high water twc, may be allowed if:
<br />1. plant factor calculation is based on the proportions of The respective
<br />plant water uses and their plant factor; or
<br />2. the plant factor of the higher water using plant is used for calcula-
<br />tions.
<br />(F) Individual hydrozones that ruin high anti low water use plants shall
<br />not be permitted.
<br />(F) On the landscape design plan and irrigation design plan, hydrozone
<br />areas shall be designated by number, letter, or other designation. On the
<br />irrigation design plan, designate the areas irrigated by each valve, and as-
<br />sign a number to each valve. Use this valve number in the I lydmyone In-
<br />formation Table (see Appendix B Section A). This table can also assist
<br />with the irrigation audit and programming the controller.
<br />(b) The irrigation design plan, at a minimum, shall contain:
<br />(1) location and size of separale water ureters for hmdscape:
<br />(2) location, type and size of all components of the irrigation system,
<br />including controllers, main and lateral lines, valves, sprinkler heads,
<br />moisture sensing devices, rain switches, quick couplers, pressure regula-
<br />tors, and backflow prevention devices;
<br />(3) static water pressure at the point of connection to the public water
<br />supply;
<br />(4) flow rate (gallons per minute), application rate (inches per hour),
<br />and design operating pressure (pressure per square inch) for each station;
<br />(5) recycled water irrigation systems as specified in Section 492.14;
<br />(6) the following statement: "I have complied with the criteria of the
<br />ordinance and applied them accordingly for the efficient use of water in
<br />the irrigation design plan"; and
<br />(7) the signature of a licensed landscape architect, certified irrigation
<br />designer, licensed landscape contractor, or any other person authorized
<br />to design an irrigation system. (See Sections 5500.1, 5615, 5641, 5641. I,
<br />5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of the Business
<br />and Professions Code, Section 832.27 of Title 16 of the California Code
<br />of Pegulatiorts, anti Section 67.21 of the rood and Agricultural Code.)
<br />NOTE: Authority cited: Section 65595, Government Code; and sections I 1 and 30,
<br />Governor's Exec. Order No. B-29-15 (April 1.2015). Reference; Seclion65596,
<br />Government Code; and section 11, Governor's Exec. Order No. B-29-15 (April
<br />i, 2015).
<br />HISTORY
<br />1. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government
<br />Code section 11343.4 (Register 2009, No. 37).
<br />2. Amendment of section and NOTE filed 9-15-2015; operative 9-15-2015. Ex-
<br />empt fnrrtr OAL review and submitted to OAL for printing only pursuant to
<br />Governor% Executive order No. B-29-15 (4-1-2015) (1tegister2415, No. 38).
<br />§ 492.8. Grading Design Plan.
<br />(a) For the efficient use of water, grading of a project site shall be de-
<br />signed to minimize soil erosion, n meff, and water waste. A grading plan
<br />shall be submitted as part of the Landscape Documentation Package. A
<br />comprehensive grading plan prepared by a civil engineer for other local
<br />agency permits satisfies this requirement.
<br />(1) The project applicant shall submit a landscape grading plan that in-
<br />dicates finished configurations and elevations of the landscape area in-
<br />cluding:
<br />(A) height ol'graded slopes;
<br />(B) drainage patterns;
<br />(C) pad elevations;
<br />(D) finish grade; and
<br />(E) stormwater retention improvements, if applicable.
<br />(2) To prevent excessive erosion and rurmff, it is highly recommended
<br />that project applicants:
<br />(A) grade so that all irrigation and normal rainfall remains within prop-
<br />crty lines and dog not drain on to non- pemrreable hardscapes;
<br />(B) avoid disruption of natural drainage patterns and undisturbed soil;
<br />and
<br />(C) avoid soil compaction in landscape areas -
<br />(3) The grading design plan shall contain the following suitemettt: 1
<br />have complied with the criteria of the ordinance and applied them accord-
<br />ingly for the efficient use of water in the grading design plan" and shall
<br />bear the signature of licensed professional as aulhorizLd by law.
<br />NOTE: Authority cited: Section 65595, Government Code. Reference: Section
<br />65596, Govemment Code.
<br />HISTORY
<br />t. New section filed 9-10-2M; operalive 9-10-2009 pimunnt to Governmeut
<br />Code section 11343.4 (Register 2009, No. 37).
<br />§ 492.9. Certificate of Completion.
<br />(a) The Certificate of Completion (see Appendix C for a sample certif-
<br />icate) shall include the following six (6) elements:
<br />(1) project information sheet that contains:
<br />(A) date;
<br />(B) project name;
<br />(C) project applicant name, telephone, and mailing address,
<br />(D) project address and location; and
<br />(E) property owner name, telephone, and mailing address.
<br />(2) certification by either the signer of the landscape design plan, the
<br />signer of the irrigation design plan, or the licensed landscape contractor
<br />that the landscape project has been installed per the approved Landscape
<br />Documentation Package;
<br />(A) where there have been significant changed made in the field during
<br />construction, these "as -built" or record drawings shall be included with
<br />the certification;
<br />(B) A diagram of the irrigation plan showing hydrozones shall be kept
<br />with the irrigation controller for subsequent management purposes.
<br />(3) irrigation scheduling parameters used to set the controller (see Sec-
<br />tion 492.10);
<br />(4) landscape and irrigation maintenance schedule (see Section
<br />492.11);
<br />(5) irrigation audit rcport (see Section 492.12); and
<br />Page 38,6 Repstec 2015, No, 38', 9-18-2015
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