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Field pH from well GD-2 does not demonstrate a trend and is near neutral. The <br /> upgradient mining in the QR seams has not significantly affected the pH in this area of the <br /> aquifer. The pH values from backfill well GD-3 are just below neutral for 1999, which is <br /> near the values in the native aquifer at well GD-2. The QR aquifer at GE-1 has values <br /> above neutral for 1999. The pH of water from well GE-2 was near 8.3 in 1999 and similar <br /> to values observed during previous years for this well. The pH values for well GE-3 were <br /> also similar and above neutral. <br /> Twenty Mile Sandstone well GF-1 generally contains water with a pH near neutral, <br /> while the latest pH from U aquifer well (GF-2) was slightly below 8. The KLM aquifer well <br /> (GF-3) at this site contained water with a pH greater than 8. A similar pH was observed <br /> for the HI aquifer at well GF-4 in 1999. Baclfill well GF-5 had field pH values above 7.5 in <br /> w1999, while the field pH for baclfill well GF-7 was just above neutral at 7.2. The field pH <br /> values in baclfill well GF-11 for 1999 were 6.6 and 6.9 units. The field pH in well GF-6 <br /> (QR) was 7.3 in 1999. <br /> Well GP-1 (QR) has water with pH values above 8.0, while well GP-2 (KLM) water <br /> was above neutral in 1999. The field pH values for wells GP-3 and GP-4 have shown little <br /> change for water collected from the HI and KLM aquifers, respectively. Well GP-3 has <br /> generally had pH values near neutral, while values for well GP-4 have been around 9. <br /> Wells GP-5 and GP-6 are completed in the QR aquifer. The field pH values from <br /> well GP-5 are generally above 8, while the pH from well GP-6 is generally above 7. <br /> The 1999 field pH values for HI aquifer well GP-7 were 7.4 and 7.6, while well GP-8 <br /> (KLM) water had field pH values of 8.2 and 8.3 in 1999. The 3rd White Sandstone aquifer <br /> wwell GP-9 field pH values are typically near neutral. <br /> 3-9 <br />