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Tracy Pumping Plant(Station 70)* <br /> and Holt(Station 248)** <br /> Deep Percolation=Precipitation-Evapotranspiration <br /> 2017 <br /> Month Precipitation(in)* Evapotranspiration(in)** Deep Percolation(in) <br /> Jan 6.61 1.18 5.43 <br /> Feb 5.29 1.48 3.81 <br /> Mar 1.53 3.60 <br /> Apr 1.80 4.32 <br /> May 0.03 7.04 <br /> Jun 0.04 7.69 <br /> Jul 0.00 8.30 <br /> Aug 0.00 6.64 <br /> Sep 0.00 4.99 <br /> Oct 0.09 3.95 <br /> Nov 1.07 1.38 <br /> Dec 0.06 1.62 <br /> Tota 1 16.52 52.19 9.24 <br /> 2018 <br /> Month Precipitation(in)* Evapotranspiration(in)** Deep Percolation(in) <br /> Jan 3.10 0.88 2.22 <br /> Feb 0.55 2.56 <br /> Mar 2.19 2.87 <br /> Apr 1.55 4.75 <br /> May 0.00 5.66 <br /> Jun 0.00 7.76 <br /> Jul 0.00 7.65 <br /> Aug 0.00 6.71 <br /> Sep 0.00 5.60 <br /> Oct 0.26 4.13 <br /> Nov 1.96 2.00 <br /> Dec 2.14 1.26 0.88 <br /> Total 11.75 51.83 3.10 <br /> *Data from Western Regional Climate Center(WRCC) <br /> **Data from California Irrigation Management Information System(CIMIS) <br /> Average Recharge(in)= 6.17 <br /> Standard Deviation(in)= 4.3 <br /> Li=1(x.b -�)2 <br /> s = N- 1 , <br /> (Wikipedia,2019) <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= 70 % <br /> Recharge Calculation Plate No.: 13 <br /> . � (Tracy Pumping Plant Station) <br /> Project No: 1910 <br /> _ Kumar Property <br /> LIVE OAK 11325 W.Larch Rd. <br /> GEO ENVIRONMENTAL INC. Tracy,CA <br />