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2.1 Average Recharge (in) = 3.05 Standard Deviation (in) = = c-NN N -1 Project No: 20-33 Plate No.: 14 Date: June 19, 2021 Recharge Calculation (Holt Station) Delta Packing 6021 E. Kettleman Ln. Lodi, CA LIVE OAK GEO ENVIRONMENTAL INC. Holt (Station 248). Deep Percolation = Precipitation - Evapotranspiration 2017 2020 Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) Month Precipitation (in) Evapotranspiration (in)Deep Percolation (in) Jan 2.55 1.10 1.37 Jan 0.98 1.26 Feb 4.47 1.48 2.99 Feb 0.01 3.13 Mar 1.88 3.60 Mar 1.19 3.58 Apr 1.76 4.32 Apr 0.67 5.25 May 0.07 7.04 May 0.11 7.25 Jun 0.15 7.69 Jun 0.03 8.60 Jul 0.00 8.30 Jul 0.01 8.47 Aug 0.00 6.64 Aug 0.00 7.12 Sep 0.00 4.99 Sep 0.01 5.24 Oct 0.16 3.95 Oct 0.01 4.08 Nov 1.03 1.38 Nov 0.13 2.28 Dec 0.08 1.62 Dec 1.41 1.33 0.08 Total 12.10 52.19 4.36 Total 4.56 57.59 0.08 2018 Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) Jan 2.91 0.88 2.03 Feb 0.45 2.56 Mar 2.34 2.87 Apr 1.72 4.75 May 0.08 5.66 Jun 0.00 7.76 Jul 0.00 7.65 Aug 0.00 6.71 Sep 0.01 5.60 Oct 0.22 4.13 Nov 1.93 2.00 Dec 2.30 1.26 1.04 Total 1200. 51.83 3.07 2019 Month Precipitation (in) Evapotranspiration (in) Deep Percolation (in) Jan 2.07 1.23 0.84 Feb 3.92 1.76 2.16 Mar 1.79 3.16 Apr 0.31 5.09 May 1.88 5.86 Jun 0.01 8.29 Jul 0.00 8.35 Aug 0.01 7.46 Sep 0.12 5.60 Oct 0.01 4.51 Nov 0.57 2.31 Dec 2.74 1.06 1.68 Total 13.40 54.68 4.68 Data from California Imgation Management Information System (CIMIS) where (x1, 02, ..., Xn) are the observed values of the sample items, x bar is the mean value of these observations, and N is the number of observations in the sample. Percent Error = Standard Deviation / mean * 100% Percent Error = 69 %