Laserfiche WebLink
• <br />to rise until June, 1987 but remained steady for the remainder of the <br />year. <br />Figure A-17 shows that the water level in backfill well GF5 has <br />steadily risen since its installation. Water levels in the latter <br />part of 1987 may indicate that levels are beginning to stabilize in <br />the backfill aquifer near well GFS. The average water level in well <br />GF6 for 1987 have declined steadily from levels for 1986 (see Figure <br />A-18). cWater levels in the QR aquifer are thought to be returning to <br />pre-mine levels in this a-rea-after the upgradient mining caused water( <br />i• levels to rise. The rise of water levels downgradient of mining areJ <br />thought to be"caused by ground water flowing fasted downgradient due \ <br />~~. <br />to increased permeabilities from mining. .~~•~~ <br />• <br />~ ' r4 . • <br />l <br />Wells GP3 and GP4 are flowing wells and pressure readings for <br />them have been converted to water-level elevation. Water-level <br />elevation data for well GP3 is tabulated in Table A-5. Figure A-19 <br />presents the plot of water- level elevation data versus time for well <br />GP3. Water levels for well GP3 significantly declined in late 1987. <br />The HI aquifer in this area should not have been affected by mining in <br />1987. <br />Figure A-20 presents the water-level elevation data for well GP4, <br />which is completed in the KLM aquifer. This data shows a great deal <br />of variance with the third quarter of 1987 being significantly lower <br />• than previous measurements. <br />2-6 <br />