Staff Report and WELO Ordinance - StopWaste.Org

More documents

Recommendations

Info

Draft 10-13-103. Irrigation Design Criteria.a. Hydrozones. The irrigation design plan shall be zoned to implement thehydrozones identified in the summary table and the landscape design plan (subsections(B)(3) and (D)(1) of this section);b. Point of Connection. All irrigation equipment must be connected to thelandscape water meter for a project. No portion of the irrigation system may be connected tothe domestic water meter, unless only one water meter is required for the property.c. Runoff and Overspray. The irrigation system shall deliver water at a ratecompatible with the soil types and infiltration rates of the site. All irrigation systems shall bedesigned to avoid runoff, low head drainage, overspray, or other similar conditions wherewater flows onto adjacent property, nonirrigated areas, walks, roadways or structures. Properirrigation equipment and schedules, including such features such as repeat cycles, shall beused to closely match maximum application rates to infiltration rates.d. Pressure regulation. The irrigation system shall be designed to keep dynamicpressure at each emission device within the manufacturer's recommended pressure range.Static water pressure shall be measured at the point of connection if available at the designstage, or otherwise shall be estimated. If static pressure is outside the irrigation system'srequired dynamic pressure range, then pressure-regulating devices such as inline pressureregulators, booster pumps, or other devices shall be specified.e. Recycled water. If a separate landscape water meter is required and whererecycled water is an approved supply of water, recycled water shall be used for landscapeirrigation.4. Equipment.a. Water Meters. Separate landscape water meters shall be installed for all newconstruction or rehabilitation landscape projects subject to this chapter (except single-familyhomes). All irrigation equipment throughout all projects must be connected to the landscapewater meter.b. Controllers. Smart irrigation controllers shall be required for all irrigationsystems and must be able to accommodate all aspects of the design. Individual controllersirrigating an area of 10,000 or more square feet shall be installed with a rain sensor(s) whichshall be properly installed (e.g., in a location suitable for detecting rain without interferencefrom structures and irrigation spray).c. Valves. Electronic valves are required for all irrigation systems. A valve mayirrigate a maximum of one hydrozone of plants with similar water use. Where feasible, treesshall be placed on separate valves from shrubs, groundcovers, and turf.d. Sprinkler Heads shall have compatible application rates within each controlvalve circuit. Sprinkler heads shall be selected for proper and uniform area coverage,application rate, operating pressure, adjustment capability, and ease of maintenance. Riserprotection devices (e.g., swing joints) shall be specified for damage prone or high trafficareas.e. Sprinkler heads must match precipitation rates unless otherwiserecommended by the manufacturer.f. Sprinkler irrigation for any contiguous turf area that is 10,000 or more squarefeet in size must be designed to achieve a minimum 0.7 lower quarter distribution uniformity,to be verified by the landscape installation certification.g. Anti-drain (Check) Valves. Anti-drain valves shall be installed at strategic lowpoints throughout the plan to avoid low-head drainage.h. Low volume equipment areas. Low volume irrigation shall be used in all the1682
Draft 10-13-10following areas, unless an alternative design having the effect of low volume irrigation (e.g.,micro-sprayers) and which will avoid runoff and erosion is approved by the director as part ofthe landscape design documentation package and verified by the landscape installationcertification.1. Landscape areas less than 8 feet in width in any direction;2. Mulched areas;3. Within 24 inches of a non-permeable surface unless no runoff occurs orthe adjacent non permeable surface drains entirely to permeablesurfaces capable of admitting and retaining the irrigation runoff;4. On slopes greater than 25% (where 25% means one foot of verticalelevation change for every four feet of horizontal length); and5. Any landscape area irrigated with grey water.i. Irrigation of slopes greater than 25% shall not exceed an application rate of0.75 inches per hour, unless an alternative design avoiding overspray and runoff is approvedby the director (e.g., the toe of the slope drains entirely to permeable surfaces).5. Irrigation Design Plan Submittal Requirements. The irrigation design plan shall bearthe signature of an architect, landscape architect, or landscape contractor licensed by thestate in good standing. The irrigation design plan shall demonstrate how it meets therequirements of sub-sections (E)(3) (irrigation design criteria) and (E)(4) (equipment) of thissection, and shall be drawn on project base sheets at a scale that accurately and clearlyidentifies and includes the following:a. Location and size of separate water meters for landscape irrigation;b. Location, type, and size of all components of the irrigation system, includingautomatic controllers, main and lateral lines, valves, sprinkler heads, emitters, moisturesensing devices, rain sensing devices, quick couplers, and backflow prevention devices;c. Static water pressure at the point of connection to the public water supply;d. Flow rate (gallons per minute), application rate (inches per hour), and designoperating pressure (psi) for each station;e. Each area to be irrigated by each valve;f. Location of soil moisture or rain sensor(s) if any; andg. The statement, "I have complied with the criteria of Livermore Municipal CodeChapter 13.25 and have applied them for efficient use of water in the landscape design plan,"and the signature of an architect, landscape architect, or landscape contractor licensed by thestate in good standing.F. Grading Design Plan. Grading design plans satisfying the following conditions shall besubmitted as part of the landscape design documentation package.1. Grading design purposes. Grading of a project landscape area shall be designed tominimize soil erosion; avoid compaction of and protect topsoil where space allows stockpilingtopsoil; maximize on-site retention and infiltration of water; confine runoff to the property;direct runoff to permeable surfaces; and avoid soil compaction in landscape areas. Ifapplicable, the grading design plan shall also comply with any best management practiceguidelines, stormwater ordinances, stormwater management plans and any other relatedrequirements that have been adopted by any federal, State of California, regional and/or cityagency for any activity, operation or facility which may cause or contribute to stormwaterpollution.2. Grading Design Submittal Requirements. The grading design plan shall meet the1783
Page 1 and 2:
LIVERMORECALIFORNIAPLANNING COMMISS
Page 3 and 4:
Since the City did not adopt an ord
Page 6 and 7:
Hydrozones, Plant Factors, and Irri
Page 9:
Staff also recommends that if grey
Page 12 and 13:
7. California Invasive Plant Counci
Page 14 and 15:
On the motion by Commissioner , sec
Page 16 and 17:
1. All new homeowner provided lands
Page 18 and 19:
is based upon the area's reference
Page 20 and 21:
B. The property owner shall submit
Page 22 and 23:
than 10 feet wide 0.4F. Landscape D
Page 24 and 25:
H. Irrigation Schedules. Irrigation
Page 26 and 27:
3. The city shall also recognize th
Page 28 and 29: Title 23. WatersDivision 2. Departm
Page 30 and 31: (n) "established landscape" means t
Page 32 and 33: (ss) "overhead sprinkler irrigation
Page 34 and 35: (c) Upon approval of the Landscape
Page 36 and 37: (2) In this next hypothetical examp
Page 38 and 39: 4. total soluble salts;5. sodium;6.
Page 40 and 41: 5641.1, 5641.2, 5641.3, 5641.4, 564
Page 42 and 43: areas irrigated by each valve, and
Page 44 and 45: (5) Each irrigation schedule shall
Page 46 and 47: (b) Model Homes. All model homes th
Page 48 and 49: 52Appendix A - Reference Evapotrans
Page 50 and 51: Independence 1.7 27 3A 6.6 8.5 9.5
Page 52 and 53: 56King City 1.7 2.0 3.4 4.4 4.4 5.6
Page 54 and 55: 58County and City Jan Feb Mar Apr M
Page 56 and 57: Gerber Dryland 0.9 1.6 3.2 4.7 6.7
Page 58 and 59: SECTION B. WATER BUDGET CALCULATION
Page 60 and 61: Estimated Total Water Use =gallonsS
Page 62 and 63: Fax No.TitleEmail AddressLicense No
Page 64 and 65: Draft 10-13-101. New construction a
Page 66 and 67: Draft 10-13-1019. "Drought tolerant
Page 68 and 69: Draft 10-13-10equipment, proper ins
Page 70 and 71: 74Draft 10-13-1079. "Rehabilitated
Page 72 and 73: Draft 10-13-103. Irrigation schedul
Page 74 and 75: Draft 10-13-10Uncovered pools and s
Page 76 and 77: Draft 10-13-10shall be submitted as
Page 80 and 81: Draft 10-13-10purposes of 13.25.060
Page 82 and 83: Draft 10-13-10b. All of the followi
Page 84 and 85: Draft 10-13-103. Attaining to the g
Page 86 and 87: STATE OF CALIFORNIADEPARTMENT OF FO
Page 88 and 89: Album vineale L. non Sch.-Bip. ex R
Page 90 and 91: B Centaurea sulphurea Wind. Sicilia
Page 92 and 93: B Fulona citiosa (Thunbcrg) Nakai h
Page 94 and 95: Pennisetum clandestinum Chiov.K kuy
Page 96 and 97: A Sphaerophysa salsula (Pall.) DC.
Page 98 and 99: Cal-[PC: The Inventory Database Pag
Page 100 and 101: Cal-IPC: The Inventory DatabasePage
Page 102 and 103: Cal-IPC: The Inventory Database Pag
Page 104 and 105: Cal-IPC: The Inventory DatabasePage
Page 106 and 107: Ca-IPC: The Inventory Database Page
Page 108 and 109: Ca1- PC: The Inventory Database Pag
Page 110: NOTES
show all

Staff Report and WELO Ordinance - StopWaste.Org

Create successful ePaper yourself

Delete template?

Save as template?