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Table 3: Summary of Groundwater Elevations,Bearings and Gradients-Intermediate and Deep Wells Georee's Service 1600 Durham Ferry Road ' Tracy,California Project No.425.2 Date Elevation of Groundwater Intermediate Well Data ' MW-2X MW-101 I mw-lo2l MW-105 MW-106 MW-107 MW 1 MW-1021 AMSL I DTW I Gradient Gradient 98,96 1 Avg. Avg. I Rearing" Slo a** Toc3 83.08 83.12 83.27 84.03 (ft) (ft/ft) 05/05/97 - 75.27 - - - - - - ' 08/25/97 = 74.95 - - - - - 09/19/97 74.14 02/24/98 75.82 - - - - ' 05/29/98 = = 73.74 - 07/14/98 74.06 72.76 73.72 73.41 11/13/98 73.31 73.39 73.20 73.99 73.30 N64°E 0.0018 04/28/99 - - 72.59 72-68 - 72.50 - 73.02 72.59 - N76-E 0.0019 ' 09!01199 = 74.15 74,33 = 74.02 - 74.67 74.17 = N84-E 0.0034 12/22199 72.5D 72.58 72.40 73.09 72.49 N630E 0.0016 03/31/00 - 72.24 72.34 72.16 72.78 72.25N80-E 0,0018 46/20/00 - - 73.50 73.67 73.38 - 73.75 73.52 N85T 0.0031 ' 09/20/00 - = 71.67 72.79 i 72.56 = 73.14 72.34 = S44°E 0.0270 12/27/00 71.96 72.06 71.89 72.61 71.98 N69-E 0.0016 03/06/01 - - 71.91 72.01 - 71.85 72.45 71.92 - N88°E 0.0018 ' 06/20/01 - 71.87 72.00 = 71.75 - 72.15 71.87 = N77-E 0.0025 09/07/01 71.60 72.27 72.03 72.82 71.97 S48-E 0.0160 12/03/01 71.76 71.73 71.56 72.69 71.68 N6-W 0.0033 Wells Resurveyed 12121/01 in accordance SWRCB Geotracker Req uirements Date Elevation of Groundwater Intermediate Well Data MW-2X MW-101 MW-102 MW-105 MW-106 MW-107 MW-201 MW-202 AMSL DTW I Gradient Gradient toc 86.03 86.44 85.30 85.47 86.19 85.61 86.37 86.37 Avg. Ave. Bearing** Slope** tos 53.53 53.90 40.30 52.97 54.19 38.61 7.37 7.37 (ft) (ft/ft) bas 51,03 51.40 37.80 50.47 51.69 36.11 4.87 4.87 12/21/01 73.86 73.95 73.77 74.69 73.86 11.60 N720E 0.0017 02/22/02 - - 73.67 73.76 73.61 - 74.43 73.68 11.78 N870E 0.0016 06/05/02 - - 73.69 73.81 - 73.59 - 74.29 73,70 11.76 N800E 0.0023_ ' 09/11/02 - = 73.36 73.48 - 73.25 = 74.22 73.36 12.10 N750E 0.0023 12/26/02 73.45 73.63 73.48 74.38 73.52 11.94 1 S620E 0.0037 03/21/03 73.32 73.35 73.21 73.99 73.29 12.17 N38-E 0.0014 06/06/03 72.92 73.01 72.82 73.56 72.92 12.54 N7(1-E 0.0018 ' 09/05/03 - 73.03 1 73.08 1 - 72.89 73.85 73.00 12.46 N360E 0.0018 P 03/04 73.38 73.41 73.15 73.23 73.34 73.06 73.34 73.99 73.26 12.57 N70% 0.0037 27/04 73.98 74.03 73.66 73.80 73.80 73.58 73.84 74.14 73.81 12.03 N89-E 0.0025 23104 73.30 73.35 73.02 73.13 73.26 72.93 73.21 73.68 See Tables 4,5,and 6 Historical Averages 73.44 12.09 N72-E 0.0023 TOC2=Top of casing elevation surveyed on 5M97. MW-2 was used as benchmark elevation. ' TOC3-Top of casing elevation surveyed on 12/18/97 and 10/19/98 into USGS Benchmark T-933 **Gradient determined from MW-102,MW-105 and MW-107 Note: Groundwater Elevations prior to 12/18/97 have been normalized to TOM for comparative purposes. 1 ' GaftfnlTarkdvinc vhr/tea