LANDSCAPE WATER CONSERVATION STATEMENT
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2 Maximum Applied Water Allowance (MAWA) MAWA = (Eto x 0.62 x 0.45 x LA) + ( Eto x 0.62 x 0.55 x SLA) MAWA = Maximum Applied Water Allowance (gallon per year) Eto = Reference Evapotranspiration (inches per year) = = Conversion factor (to gallon per square foot) = = ET Adjustment Factor (ETAF) = 0.45 LA = Area (square foot) = 6, = The additional ET Adjustment Factor for Special Area ( = 0.55) = 0.55 SLA = Portion of the landscape area identified as Special Area (square foot) = 0 MAWA = ( x 0.62 x 0.45 x 6,185 ) + ( x 0.62 x 0.55 x 0 ) = 77,808 gallon per year Note: Effective Precipitation was not considered in this calculation. There is no recycled water system and no Special Areas CIMIS Station #156 Oxnard CA Sounth Coast Valley Eto (Inches) Water Month Budget % Jan % Feb % Mar % Apr % May % Jun % Jul % Aug % Sep % Oct % Nov % Dec % Annual Total LANDSCAPE WATER CONSERVATION STATEMENT Water conservation is achieved in this landscape construction document as described below. 1. All plant materials selected for this site were appropriate for the geographical location and local climate, their adaptability to drought. Data from WULCOLS III has been used for determining species' plant factor for the water use calculations. 2. Plants with similar water use requirements were grouped together % of landscape areas are planted with low water use plants, the balance with moderate use plants. No high water use plants are used. 4. Irrigation sections/hydrozones are separated by considering plant species factor, plant density and microclimate. If low water use plants are mixed with moderate water use plants in the same hydrozone, the moderate water use factor is used for water use calculations. See Hydrozone exhibit and table. 5. The irrigation system utilizes low-volume distribution system with a master valve, flow sensor, check valves, ET based automatic controllers with Cycle+Soak and water budgeting capability, weather station, rain shut-off. 6. The use of turf is eliminated. All tree, shrub and groundcover areas will be dressed with 2" layer of mulch moisture retention and to discourage weeds. 7. There is no Special Area in this project. Estimate Total Water Use (ETWU) ETWU = Eto x 0.62 x ( PF x HA / IE + SLA ) ETW U = Estimated water use per year (gallon per year) Eto = Reference Evapotranspiration (inches per year) 0.62 = Conversion Factor (to gallon per square foot) PF= Coefficient HA = Hydrozone Area (High, medium and low water use are in square feet), same as landscape area LA IE = Irrigation Efficiency SLA = Special Area (square feet) HYDROZONE ETWU = Eto x Conversion Factor x ( PF x HA / IE + SLA ) HZ 1 22,670 = x 0.62 x 0.20 x 3,041 / HZ 2 16,033 = x 0.62 x 0.20 x 2,294 / HZ 3 4,543 = x 0.62 x 0.20 x 650 / HZ 4 3,494 = x 0.62 x 0.50 x 200 / Total 46,740 gallon per year Estimated Total Applied Water (No effective precipitation is included) CIMIS Station #156 Oxnard CA % of Peak Month Sounth Coas Eto Eto (Water Budget) Monthly Applied Water January 3,038 Jan % (calculated from peak month February 3,527 Feb % Estimated Total Applied Water ) March 5,019 Mar % April 5,878 Apr % May 6,776 May % June 6,406 Jun % July 6,815 Jul % August 6,578 Aug % September 5,429 Sep % October 4,253 Oct % November 3,236 Nov % December 2,602 Dec % Estimated Total Applied Water (ETAW) 59,555 gallon per year Annual Total (Less than MAWA ) Maximum Applied Water Allowance (MAWA) 77,808 gallon per year Estimated Total Water Use (ETWU) 46,740 gallon per year (Less than MAWA ) Hydrozone Information Table La ndsca pe Coe fficie nt (Kl) Kl = Ks x Kd x Kmc Ks Species factor Kd Density factor Kmc Microclimate factor Hydrozone Controller Valve # Pla nt W a te r Use* Species Factor(Ks) Density Factor (Kd) Micro-climate Factor (Kmc) Coe fficie nt (Kl) Plant Type Irrigation Method** IE (Irriga tion Efficiency) Area w/ slope fa ctor (LA) squa re fe e t Kl x LA (Sq. Ft.) Ground Plane Gradient Gradient M ultiplie r Area - potable w a te r (sq.ft.) S pe cia l Area -recycled w a te r (sq.ft.) PR HZ 1 2, 4 L S,G LVS (4 SQ) ,041 HZ 2 5, 7 L S B ,294 HZ 3 3, 6 L T B HZ 4 1 M T B flat 1 3, flat 1 2, flat flat ,185 Peak Month Irrigation Run Time Calculation Peak Month Watering Schedule FRICTION LOSS CALCULATION T = 60 x D x Eto x Kc / PR x IE T = Sprinkler run time in minutes 60 = Constant for conversion of area, flow, inches per hour and inches per day into common units D = Water frequency in days Eto Reference evapotranspiration rate in inches per day Kc = Crop Coefficient (used Ks, Species Factor) PR = Precipitation rate of the area, in inches per hour IE = Application efficiency of the system, percent Irrigation Efficiency Bubblers 80% Rotor 75% Low Volume Spray 75% CIMIS Station #156 Oxnard CA Month Eto Days Daily Eto Water (inches) Budget Jan % Feb % Mar % Apr % May % Jun % Jul % Aug % Sep % Oct % Nov % Dec % Annual Total Frequency of watering 1 Everyday Maxim um Run Tim e = (Infiltration rate / Precipitation rate ) x 60 2 Every 2 days For clay loamy soil Infiltration rate: 0.25 inch/hour 3 Every 3 days Precep. For Bubbler (0.25 / ) x 60 = 3 5 minutes Precep. for Low 30 min. Voluem Spray 0.8 (0.25 / ) x 60 = 19 minutes Soak Time between Cycles Irrigation Method Spray LVS Low Volume R Rotor B Low Volume Bubbler Cycle Starting Time 3am Irrigation Hydrozone Controller station no. Method Frequency of watering Number of Cycles Run Time (minutes) no. of valve stations per Hz Runtime per HZ Plant Type HZ 1 2, 4 LVS (4 SQ) S,G Shrubs & Groundcover, Low HZ 2 5, 7 B S Shrubs, Low HZ 3 3, 6 B T Trees, Low PROJECT NAME: Victory Outreach Church Job No. : Data Give By: Steve Newman WATER SUPPLIER: Oxnard City Water Services PHONE: DATE: 7/18/2016 STATIC PRESSURE: 60 PSI LOCATION : 2311 Statham, Oxnard CA P.O.C. Location: ELEVATION: VALVE NO: FLOW RATE : 20 GPM SERVICE LINE n/a 2" 30 feet loss/100' PSI WATER METER size: 1" 0.9 PSI BACKFLOW size: 1-1/2" 6.0 PSI FLOW METER size: 1-1/2" 1.0 PSI HYDROZONE T = 60 x D x Daily Eto x Kc / ( PR x IE ) Actual Applied Water per One Watering HZ 1 4 = 60 x 1 x x / ( 0.60 x 0.75 ) 102 = HZ 2 1 = 60 x 1 x x / ( 2.00 x 0.80 ) 41 = HZ 3 1 = 60 x 1 x x / ( 2.00 x 0.80 ) 39 = HZ 4 4 = 60 x 1 x x / ( 2.00 x 0.80 ) 45 = Total 227 gallon s Watering per month X 31 Total Applied Water per Month 7,043 = GPM per Hydrozone x Watering Time (minutes) 23 x 4 33 x 1 26 x 1 12 x 4 HZ 4 1 B T Trees, M oderate Total minutes* Total Hours* S = Shrub T =Tree *Total watering m inutes/hours do not include the tim e for valves open and close. TF=Turf G=Ground covers This irrigation watering schedule has been prepared as a part of landscape documentation package prior to construction. V=Vine P = Palm TF = Turf Since an accurate agricultural soils analysis will not be performed until after site grading is done but prior to landscape installation, adjustments in watering time and cycle may be needed depending on the final site conditions and soil type. ELEV CHG PSI MAINLINE PIPE: 1-1/2" PSI Sch.40 feet loss/100' 0.44 PSI 2" 0 feet loss/100' 0 PSI 0.0 PSI MASTER VALVE size: 1-1/2" 3.9 PSI R.C.V. size: 1" 2.9 PSI Basket Strainer n/a 0.0 PSI LATERAL PIPE/FITTINGS (allowance) 5.0 PSI HEAD 20.0 PSI TOTAL PRESSURE LOSS: 42.6 PSI RESIDUAL PRESSURE: 17.4 PSI
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