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r - -� .. -aw; �X,_ <br /> .. Job No. 00760 Page: 4 <br /> two groundwater monitoring wells (MW-2 and MW-4) were used <br /> as extraction wells. During the final test involving MW-2, <br /> a mechanical failure of the vacuum pump occurred preventing <br /> the measurement of extraction volumes from 14W-2. i <br /> Monitoring wells MW-1 and MW-3 were used only to measure <br /> the capture radius of various extraction wells. , <br /> Table 1 indicates that extraction volumes ranged from 14 <br /> cfm to 20 cfm with vacuums recorded at 3.5" Hg to 2.5" Hg. <br /> - influence was noted at distances greater than 55' but less <br /> than 691. Extraction from shallow well VW-9 showed greater <br /> w influence on the deeper wells than on shallow wells at the <br /> same radius. <br /> j _ <br /> 3 <br /> The site is amenable to vacuum extraction Each extraction <br /> #� well lies within the capture zone of another well. Wells <br /> MW-2 and MW-4 should demonstrate an overlapping capture <br /> --- zone at the deeper interval. The vapor recovery wells will <br /> have overlapping capture zones in the shallower interval. <br /> Isolated depths were not tested, but the study indicates <br /> that the capture radius is spherical. <br /> Initial extraction rates should yield approximately 250 <br /> `- -- - -------pounds- of--hydrocarbons---per-day---at-6u-cfm---and-initial._.soil - <br /> t <br />