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1. CAPTURE ZONE ANALYSIS <br /> Capture was evaluated for both the North and South Balloon Area Groundwater <br /> Treatment Systems. The average daily potentiometric data for the quarter was <br /> determined by averaging a minimum of one data point per month for each well . <br /> Plume extents (5 ppb) were drawn using the data from same quarter as <br /> potentiometric data. <br /> A-Zone <br /> Capture of Plume 1, A-Zone, in the South Balloon Area is almost complete. <br /> The northern edge of Plume 1 and Plume 3 are not being captured by South <br /> Balloon System. The Central Area System will include extraction well in this <br /> area (South End of Runway). The quantity of water being pumped from A-Zone <br /> has been going down due to the drop in water level. <br /> Capture of Plume 7 and 8, A-Zone, in the North Balloon area is almost <br /> complete. Additional extraction wells NA-8 and NA-9 have been added recently <br /> to capture the northern part of the plume. <br /> B-Zone <br /> Capture of Plum 1 , B-Zone, in the South Balloon Area is near complete. <br /> The northern edge of Plume 1 and Plume 3 will be captured by Central Area <br /> extraction well in this area (South End of Runway) . <br /> Capture of Plume 7 and 8, B-Zone, in the North Balloon area is nearly <br /> complete. New extraction well NB-5 went into operation during the month of <br /> April. There is noticeable difference when compared to last quarter' s maps. <br /> C-Zone <br /> Capture of Plume 1, C-Zone, in the South Balloon Area was almost <br /> complete. Extraction well C-3 was repaired in April. Continual pumping of <br /> these three wells will produce a better capture zone next quarter. <br /> Capture of Plume 7 and 8, C-Zone, in the North Balloon Area was not <br /> complete. New wells NC-2R and NC-3R went into operation during the first <br /> quarter. There is noticeable difference when compared to last quarter' s map. <br /> Larger pumps could be added to wells NB-1 , NB-2, and NB-3 which were drilled <br /> to 125 feet, 120 feet, and 121 feet, respectively. <br /> Agricultural Wells AGW-7 and AGW-6 <br /> Pumps at AGW-7 and AGW-6 have not been operated except for sampling since <br /> fall of 1991. There is still an indication capture zone type groundwater <br /> flows near these wells. <br />