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Cambria Environmental Technology Variable discharge test Date June 9, 1999 Attachment A, Page 5 1144 65th St Time-Drawdown-method after Protect 341 Main St, Ripon, CA Oakland CA COOPER &JACOB Ph(510)420 0700 Confined aquifer Evaluated by B Jakub Pumping Test No 2 Test conducted on May 4, 1999 MW-1, Pumping well EW-1 MW-1 Discharge 10 52 U S gal/min Distance from the pumping well 42 85 ft Static water level 27 74 ft below datum Pumping test duration Water level Adjusted Drawdown/Discharge Pumping test duration [min] [ft] (min] [minlftz] 151 3 00 27 75 3 00 0 OD 152 320 2775 320 000 153 340 2775 340 000 154 360 2775 360 000 155 380 2775 380 000 156 400 2775 400 001 157 420 2775 420 000 158 440 2775 440 000 159 460 2776 460 001 160 480 2776 480 001 161 500 2776 500 001 162 520 2776 520 001 163 540 2776 540 001 164 560 2776 560 001 165 580 2776 580 001 166 600 2776 600 001 167 620 2776 620 001 • 168 640 2776 640 001 169 660 2775 660 001 170 680 2776 680 001 171 700 2776 700 001 172 720 2775 720 000 173 740 2775 740 001 174 760 2776 760 001 175 780 2776 780 001 176 800 2776 800 001 177 820 2776 820 001 178 840 2776 840 001 179 860 2777 860 001 180 880 2777 1 880 001 181 900 2776 9 00 001 182 920 2776 920 0 01 183 940 2777 940 001 184 960 2777 960 001 185 980 2777 980 002 186 1000 2777 1000 001 187 1200 2777 1200 002 188 1400 27 77 1400 002 189 1600 2777 1600 002 190 1800 2777 1800 0 02 191 2000 2777 2000 00 02 192 22 00 2777 2200 002 193 2400 2778 2400 002 194 2600 2778 2600 00 195 2800 2778 2800 002 196 3000 2778 3000 003 197 3200 27 78 3200 002 198 3400 2778 3400 002 199 3600 2778 3600 002 2D0 38 00 2779 3800 003