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(Wilopedia, 20191 <br />Project No: 1924 <br />Plate No.: 15 <br />Date: May 30, 2019 <br />Recharge Calculation <br />(Manteca Station) <br />Madzier Property <br />11006 E. St. Rt. 120 <br />Manteca, CA LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Manteca (Station 70)* <br />Deep Percolation = Precipitation- Evapotranspiration <br />2014 2017 <br />Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) <br />Jan 0.43 1.90 Jan 5.50 1.09 4.41 <br />Feb 2.67 1.91 076 Feb 0.07 1.63 <br />Mar 1.89 3.49 Mar 1.41 3.69 <br />Apr 0.72 5.10 Apr 1.63 4.55 <br />May 0.00 7.46 May 0.09 7.13 <br />Jun 0.03 8.03 Jun 0.02 7.78 <br />Jul 0.00 7.82 Jul 0.00 8.35 <br />Aug 0.00 6.84 Aug 0.03 6.91 <br />Sep 0.50 5.21 Sep 0.00 4.90 <br />Oct 0.43 3.65 Oct 0.11 3.82 <br />Nov 1.16 1.64 Nov 0.74 1.60 <br />Dec 5.83 0.96 4.87 Dec 0.08 1.62 <br />Total 13,20 52.11 5.63 Total 9.70 53.07 4.41 <br />2015 2018 <br />Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) <br />Jan 0.10 1.11 Jan 2.85 1.02 1.83 <br />Feb 0.89 1.97 Feb 0.61 2.58 <br />Mar 021 4.32 Mar 1.94 3.08 <br />Apr 1.14 5.69 Apr 1.75 5.22 <br />May 0.01 6.70 May 0.09 6.94 <br />Jun 0.06 7.73 Jun 0.00 7.89 <br />Jul 0.00 7.96 Jul 0.00 8.34 <br />Aug 0.01 7.09 Aug 0.00 7.07 <br />Sep 0.02 4.82 Sep 0.02 5.54 <br />Oct 0.18 3.75 Oct 0.33 3.83 <br />Nov 1.95 1.89 0.06 Nov 2.15 1.92 023 <br />Dec 2.14 1.24 0.90 Dec 2.26 1.26 1 00 <br />6.70 54.27 0.96 Total 12.00 54.69 3.06 <br />2016 <br />Month Precipitation (in) Evapotranspiration (in) Deep Percolation (In) <br />Jan 4.38 1.11 3.27 <br />Feb 0.50 2.59 <br />Mar 3.01 3.45 <br />Apr 2.22 5.23 <br />May 0.37 6.59 <br />Jun 0.00 7.98 <br />Jul 0.00 8.20 <br />Aug 0.00 6.88 <br />Sep 0.00 5.35 <br />Oct 2.17 2.64 <br />Nov 1.45 1.80 <br />Dec 2.07 1.22 0.85 <br />16.20 53.24 4.12 <br />Data from California Irrigation Management Information System (CIMIS) <br />Average Recharge (In) = 3.64 <br />Standard Deviation (in) = 1.8 <br />where (01, x2, ..., Xn) are the observed values of the sample items, x bar is the mean <br />value of these observations, and N is the number of observations in the sample. <br />Percent Error = Standard Deviation / mean • 100% <br />Percent Error = 48 %