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i <br />200 <br />175 <br />150 <br />125 <br />rn <br />u.i <br />Q 100 <br />W ~ <br />J <br />o ~ <br />~ 75 <br />50 <br />25 <br />0 <br /> <br />YEAR <br />FIGURE B-10. SULFATE VERSUS TIME FOR WELLS GD-1, GD-1(2), GF-1 AND GF-2. <br />U <br />ao M~~C- <br />