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Tracy Pumping Plant(Station 049001 r <br /> and Holt(Station 24ar <br /> Deep Percolation=Precipitation-Avg.Evapotranspiration <br /> 2017 2021 <br /> Month Precipitation-TPP(in)'Evapotrans ilretion-Holt(in)" Deep Percolation(in) Month Precipitation-TPP(in)-Evapotranspiration-Holt(in)" Deep Percolation(in) <br /> Jan 6.61 1.18 5.43 Jan 1.95 1.65 0.30 <br /> Feb 5.29 1.48 3,81 Feb 0.37 2.55 <br /> Mar 1.53 3.60 Mar 0.65 4.02 <br /> Apr 1.80 4.32 Apr 0.00 6.02 <br /> May 0.03 7.04 May 0.00 8.23 <br /> Jun 0.04 7.69 Jun 0.00 8.53 <br /> Jul 0.00 8.30 Jul 0.00 8.36 <br /> Aug 0.00 6.64 Aug 0.00 7.00 <br /> Sep 0.00 4.99 Sep 0.02 5.82 <br /> Oct 0.09 3.95 Oct 2.70 3.55 <br /> Nov 1.07 1.38 Nov 0.70 1.49 <br /> Dec 0.06 1.62 Dec 3.87 0.77 3.10 <br /> Total 16.52 52.19 9.24 1 Total 10.26 57.99 340 <br /> 2018 2022 <br /> Month Precipitation-TPP(inr Evapotrans ilration-Holt(in)" Deep Percolation(in) Month Preelpitation-TPP(inr Evapotranspiration-Holt(in)" Deep Percolation(in) <br /> Jan 3.10 0.88 2.22 Jan 0.03 1.53 <br /> Feb 0.55 2.56 Feb 0.00 2.78 <br /> Mar 2.19 2.87 Mar 0.46 4.33 <br /> Apr 1.55 4.75 Apr 0.56 5.60 <br /> May 0.00 5.66 May 0.02 7.85 <br /> Jun 0.00 7.76 Jun 0.08 8.18 <br /> Jul 0.00 7.65 Jul 0.00 8.25 <br /> Aug 0.00 6.71 Aug 0.00 7.30 <br /> Sep 0.00 5.60 Sep 1.14 5.55 <br /> Oct 0.26 4.13 Oct 0.00 4.02 <br /> Nov 1.96 2.00 Nov 0.89 2.03 <br /> Dec 2.14 1.26 0.88 Dec 6.79 0.72 6.07 <br /> Total 11.75 51.83 3.10 1 Total 9.97 58.14 6.07 <br /> 2019 2023 <br /> Month Precipitation-TPP(in)' Evapotranspiration-Holt(Inr Deep Percolation(in) Month Precipitation-TPP(Inr Evapotranspiration-Holt(in)" Deep Percolation(in) <br /> Jan 2A6 1.23 0.93 Jan 7.09 1.38 5.71 <br /> Feb 4.54 1.76 2.78 Feb 2.25 1.91 0.34 <br /> Mar 1.77 3.16 Mar 5.13 2.87 2.26 <br /> Apr 0.28 5.09 Apr 0.03 5.49 <br /> May 1.23 5.86 May 0.26 6.10 <br /> Jun 0.00 8.29 Jun 0.01 7.46 <br /> Jul 0.00 8.35 Jul 0.00 8.46 <br /> Aug 0.00 7.46 Aug 0.00 7.15 <br /> Sep 0.04 5.60 Sep 0.00 5.17 <br /> Oct 0.00 4.51 Oct 0.00 3.82 <br /> Nov 0.75 2.31 Nov 0.62 2.14 <br /> Dec 3.47 1.06 2.41 Dec 2.31 1.11 1.20 <br /> Total 14.24 54.68 6.12 Total 17.70 53.06 9.511 <br /> 2020 2024 <br /> Month Precipitation-TPP(Inr Evapotranspiration-Holt(In)" Deep Percolation(in) Month Precipitation-TPP(Inr Evapotranspiration-Holt(Inr Deep Percolation(In) <br /> Jan 1.05 1.26 Jan 3.19 1.04 2.15 <br /> Feb 0.00 3.13 Feb 2.86 1.75 1.11 <br /> Mar 1.84 3.58 Mar 1.45 3.43 <br /> Apr 0.91 5.25 Apr 2.03 4.90 <br /> May 0.19 7.25 May 0.40 7.59 <br /> Jun 0.00 8.60 Jun 0.00 8.65 <br /> Jul 0.00 8.47 Jul 0.00 8.79 <br /> Aug 0.08 7.12 Aug 0.00 7.39 <br /> Sep 0.00 5.24 Sep 0.00 5.70 <br /> Oct 0.00 4.08 Oct 0.00 4.30 <br /> Nov 0.07 2.28 Nov 1.53 2.07 <br /> Dec 1.48 1.33 0.15 Dec 2.18 0.88 1.30 <br /> Total 5.62 57.59 0.15 Total 13.64 56.49 4.56 <br /> 'Data from Western Regional Climate Center(WRCC) <br /> "Data from California Irrigation Management Information System(CIMIS) 2025 <br /> Month Precipitation-TPP(kir Evapotranspiration-Holt(In)" Deep Percolation(in) <br /> Average Recharge(in)= 4.94 Jan 0.03 1.78 <br /> Feb 2.81 2.04 0.77 <br /> Standard Deviation(in)= 3.1 Mar 1.27 3.49 <br /> Apr 0.21 5.16 <br /> May 0.00 7.85 <br /> N( 2 Jun 0.00 8.24 <br /> Jul 0.00 7.92 <br /> d N_1 r Aug 0.00 7.39 <br /> (W,kiped,201s) Sep 0.11 5.10 <br /> Oct 2.67 3.11 <br /> Nov 2.49 1.28 1.21 <br /> where{x1,x2,...,Xn)are the observed values of the sample hems,x bar is the mean Dec 0.81 0.46 0.35 <br /> value of these observations,and N is the number of observations in the sample. I Total 10.40 53.82 2.33 <br /> Percent Error=Standard Deviation/mean'100% <br /> Percent Error 63% <br /> Recharge Calculation Plate No.: 17 <br /> ^k- (Tracy Pumping Plant&Holt Stations) Project No: 2637 <br /> Wongphiboonrat Property <br /> LIVE OAK 23304 S.Hansen Rd. Date: June 22,2026 <br /> Tracy,CA <br /> GEO ENVIRONMENTAL INC. r___ I <br />