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Cambria Environmental Technology Variable discharge test Date June 9, 1999 Attachment A, Page 4 1144 651h St Trme-Drawdown-method after Oakland CA COOPER&JACOB Project 341 Main St, Ripon,CA 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] [min/ft2] 101 0 33 27 74 033 -000 102 035 2774 035 -000 103 037 2774 037 -000 104 038 2774 038 -000 105 040 2774 040 -000 106 042 2774 042 -000 107 043 2774 043 -000 108 045 2774 045 -000 109 047 2774 047 -000 110 048 2774 048 -000 11 1 050 2774 050 000 112 052 2774 052 -000 113 053 2774 053 -000 114 055 2774 055 -000 115 057 27 74 067 -000 116 058 2774 058 -000 117 060 2774 060 000 118 062 2774 062 000 119 —6-6-3 — 2774 063 000 120 065 27 74 065 000 121 067 2774 0 67 000 122 068 2774 068 _000 123 070 2774 070 000 124 072 27 74 072 000 125 073 2774 073 000 126 075 2774 075 000 127 077 2774 077 000 128 078 2775 078 _000 129 080 2774 080 000 130 082 2775 082 000 131 083 2775 083 000 132 085 2775 085 000 133 _087 2775 087 000 134 088 2775 088 _000 135 090 2775 090 000 136 092 2775 092 000 1371 093 2775 093 _000 138 095 2775 095 000 139 097 2775 097 000 140 098 2775 098 000 141 1 00 2775 1 00 0001 142 1 20 27 75 1 20 000 143 1 40 2775 1 40 000 144 1 60 2774 1 60 000 145 1 80 2774 1 80 -000 146 200 2774 200 -000 147 220 2774 220 000 148 240 2774 240 -000 149 260 2774 260 000 150 280 2775 280 000