ARCHIVED REPORTS_FIRST QUARTER 2018 GROUNDWATER MONITORING REPORT

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TABLE 2 1ST-QUARTER 2018 GROUNDWATER-MONITORING DATA DP/RIPON ENERGY (JANUARY 2 AND 3,2018) Field Data Laboratory Data NO3 as RP DTW GWE Temp pH EC Turbidity pH EC TDS Nitrogen Well Date ft, MSL ft ft, MSL C° pH Units umhos/cm) (NTU) (pH Units umhos/cm (mg/L m /L OB-1 1/2/2018 66.91 25.78 41.13 19.5 6.95 1,544 47 7.56 1,570 870 13 OB-2 1/2/2018 70.93 28.11 42.82 18.9 6.82 951 2.45 7.46 949 590 8.7 OB-4 1/2/2018 69.39 25.49 43.90 18.4 7.09 2,084 26.3 7.59 2,100 1,300 2.0 OB-5 1/2/2018 63.71 21.50 42.21 19.2 7.09 1,056 12.2 7.23 1,050 690 5.1 OB-7 1/2/2018 69.55 25.48 44.07 19.9 7.29 1,039 1.03 7.58 1,020 660 3.3 OB-8 1/2/2018 59.67 13.11 46.56 20.8 6.76 903 4.05 7.21 902 590 3.2 OB-11 1/2/2018 68.38 23.99 44.39 19.8 6.61 1,279 20.9 6.88 1,240 870 <0.021 OB-17 1/2/2018 59.79 12.28 47.51 14.9 7.00 359 1.83 7.31 312 220 <0.021 OB-19 1/2/2018 66.80 24.38 42.42 18.2 6.50 1,105 17.8 7.61 1,090 670 7.9 OB-21 1/2/2018 57.56 11.62 45.94 17.3 7.51 364 4.3 7.62 344 260 <0.021 OB-22 1/2/2018 57.59 10.48 47.11 17.5 7.85 119 4.17 7.41 108 100 <0.021 OB-24 1/2/2018 58.73 15.12 43.61 18.3 7.21 1,790 82.9 7.59 1,860 1,200 3.3 OB-25 1/2/2018 59.18 15.83 43.35 15.7 7.18 1,779 123 7.38 1,960 1,200 3.5 OB-26 1/2/2018 67.19 25.00 42.19 20.3 7.62 938 8.8 7.81 972 670 42 OB-28 1/2/2018 71.52 27.48 44.04 19.8 7.25 1,582 77.5 7.58 1,630 900 55 ASB-2* 1/2/2018 NA NA NA 12.1 7.78 772 NA NA NA 540 NA Stanislaus** 1/2/2018 NA NA NA 11.9 7.28 124 NA NA NA 87 NA Note: NA = not applicable; TDS values for ASB-2 and the Stanislaus River were calculated from field EC values (Field EC* 0.7 = TDS). * = Sample collected from pond adjacent to OB-8. ** = Sample collected adjacent to OB-17.