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5 = <br />(Wikipedia, 20191 <br />Lii=1(X i <br />N -1 <br />Project No: 1934 <br />Plate No.: 14 <br />Date: July 23, 2019 LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Recharge Calculation <br />(Staten Island Station) <br />Wutzke Property <br />21600 N. Kennefick Rd. <br />Acampo, CA <br />Staten Island (Station 242)* <br />Deep Percolation = Precipitation - Evapotranspiration <br />2016 <br />Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) <br />Jan 4.89 1.21 3.68 <br />Feb 0.89 2.77 <br />Mar 6.09 3.5 2.59 <br />Apr 1.43 5.63 <br />May 0.27 6.59 <br />Jun 0.00 7.97 <br />Jul 0.00 8.39 <br />Aug 0.00 7.05 <br />Sep 0.00 5.64 <br />Oct 5.78 3.01 2.77 <br />Nov 1.42 1.76 <br />Dec 4.28 1.35 2.93 <br />Total 25.00 54.87 11.97 <br />2017 <br />Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) <br />Jan 12.68 1.17 11.51 <br />Feb 8.22 1.65 6.57 <br />Mar 2.54 3.81 <br />Apr 2.58 4.42 <br />May 0.06 7.51 <br />Jun 0.06 7.98 <br />Jul 0.00 8.34 <br />Aug 0.00 7.21 <br />Sep 0.00 5.42 <br />Oct 0.15 4.5 <br />Nov 2.56 1.54 1.02 <br />Dec 0.07 1.91 <br />28.90 55.46 19.1 <br />2018 <br />Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) <br />Jan 5.76 0.94 4.82 <br />Feb 0.16 3 <br />Mar 2.34 3.1 <br />Apr 0.49 4.86 <br />May 0.19 6.96 <br />Jun 0.00 8.42 <br />Jul 0.00 8.09 <br />Aug 0.01 6.29 <br />Sep 0.01 5.59 <br />Oct 0.02 4.33 <br />Nov 2.53 2.09 0.44 <br />Dec 2.82 1.35 1.47 <br />14.30 55.02 6.73 <br />*Data from California Irrigation Management Information System (CIMIS) <br />Average Recharge = (11.97 in + 19.1 in +6.73 in)/3 = 12.60 in <br />Standard Deviation (in) = 6.2 <br />where {x1, 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 = 49 %