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Cambria Environmental Technology Pumping test analysis Date June 8, 1999 Attachment A, Page 5 1144 65th St Recovery method after Project 341 Main St, Ripon, CA Oakland CA THEIS&JACOB Ph(510)420 0700 Unconfined aquifer Evaluated by B Jakub Pumping Test No 3 Test conducted on May 5, 1999 • MW-1, EW-1 Pumping Well MW-1 Discharge 11 40 U S gal/min Distance from the pumping well 42 85 ft Static water level 27 76 ft below datum Pumping test duration 544 00 min Time from Water level Residual Corrected end of pumping drawdown drawdown [mmJ [ft] [ft] [ft] 151 300 2791 015 015 152 320 2791 015 015 153 340 2791 015 015 154 360 2791 015 015 155 380 2790 014 014 156 400 2790 014 014 157 420 2790 014 014 158 440 2790 014 014 159 460 2790 014 014 160 480 2790 014 014 161 500 2790 014 014 162 520 2790 014 013 163 540 2789 013 013 164 560 2789 013 013 165 580 2789 013 013 166 600 2789 013 013 167 620 2789 013 013 . 168 640 2789 013 013 169 660 2789 013 013 170 680 2789 013 013 171 700 2789 013 013 172 720 2789 013 012 173 740 2789 013 012 174 760 2789 013 012 175 780 2789 013 012 176 800 2789 013 012 177 820 2788 012 012 178 840 2788 012 012 179 860 2788 012 0 n- 180 880 2788 012 0 12 181 900 2788 012 012 182 920 2788 012 0 12 183 940 2788 012 012 184 960 2788 012 012 185 980 2788 012 012 186 1000 2788 012 012 187 1200 2788 012 012 188 1400 2767 Oil Oil 189 1600 2786 010 010 190 1800 2786 010 01 191 2000 2786 010 01 192 2200 2786 010 009 193 2400 2786 010 010 194 2600 2785 009 009 195 2800 2785 009 009 196 3000 2785 009 00 197 3200 2784 008 008 198 3400 2784 008 008 199 3600 2783 007 007 2011 L 3800 2784 008 008