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Compare ETWU with MAWA: For this example MAWA = (51.1) (0.62) [(0.7 x 50,000) + (0.3 x 0)] _
<br />1,]08,870 gallons per year. The ETWU (1,102,116 gallons per year) is less than MAWA (1,108,870
<br />gallons per year). In this example, the water budget complies with the MAWA.
<br />(2) Example ETWU calculation: total landscape area is 50,000 square feet, 2,000 square feet of which is
<br />planted with edible plants. The edible plant area is considered a Special Landscape Area (SLA). The
<br />reference evapotranspiration value is S l .1 inches per year. The plant type, plant factor, and hydrozone
<br />area are shown in the table below.
<br />
<br />
<br />H drozone
<br />Plant Water
<br />Use T e(s) Plant
<br />Factor
<br />(PF)* Hydrozone
<br />Area (HA)
<br />s ware feet)
<br />PF x HA
<br />(s uare feet)
<br />1 Hi h 0.8 7,000 5,600
<br />2 Hi h 0.7 9,000 6,300
<br />3 Medium 0.5 15,000 7,500
<br />4 Low 0.3 7,000 2,100
<br />5 Low 0.2 10,000 2,000
<br /> Sum 23,500
<br />6 SLA l.0 2,000 2,000
<br />*Plant Factor from WUCOLS
<br />ETWU = (51 .l }(0.62) 23,500 + 2 ~
<br />0.71
<br />_ (31.68) (33,099 + 2,000)
<br />= 1,1 l 1,936 gallons per year
<br />Compare ETWU with MAWA. For this example:
<br />MAWA = (51.1) (0.62) [(0.7 x 50,000) + (0.3 x 2,000)]
<br />= 31.68 x [35,000 + 600]
<br />= 3l .68 x 35,600
<br />=],127,808 gallons per year
<br />The ETWU (l,1 l 1,936 gallons per year) is less than MAWA (1,]27,808 gallons per year). For this
<br />example, the water budget complies with the MAWA.
<br />Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
<br />§ 492.5 Soil Management Report.
<br />(a) In order to cxeate drought resistant soil, reduce runoff and encourage healthy plant growth, a soil
<br />management report addressing soil attributes of ~th~ project side shall be completed by the project
<br />applicant, or hislher designee.. ~~~~n=:T
<br />(bj The soil management report shall address the soil attributes ofthe project site and shall include:
<br />(l) Identification of areas of quality topsoil to be protected during construction and/or critical soiE
<br />limitations such as compaction; water logged sails or iv~tlatids; din, erod+~d or erosion prone soils.
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