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<br /> <br />I \• <br />Spri nc #1 had a fiow of 0.074 cfs and a TL`S of 2,216 mg/l; the NPUES 004 pond had a flow <br />of 0.080 cfs antl a iU5 of 2,058 mg/l, while 50.'-57-6 had a flow of 0.116 cfs and a TDS of <br />2,082 mg/l. A more detailed discussion of flow and rvater quality in Cow Comp and Bond <br />Creeks will be included in future Annual Hydrol ngy Reports as data from an increased <br />monitoring program in 1987 becomes available. <br />4. Spoils .`,prings #3, 4, 5, and 7 <br />These springs all exist in the Wadge seam mining area in the Little Crassy Creek basin. <br />Spoils Spriny #3 drains out of an old mine pit with a flow of 0.076 cfs and a conductivity <br />(corrected to 25°C) of 3,950 umhos/cm. Spoils Spring #4 is a spring creek in reclaimed <br />lands adjacent to Spoils Spriny #3. Its flow (upstream of the confluence of Spoils Spring <br />#3) was also 0.076 efs, while its conductivity (corrected to 25°C) was 4,150 umhos/cm. <br />Spoils Spring #5 drains out of another old mine pit north of Spoils Spring #3. It had a <br />flow of 0.108 efs and a conductivity of 3,050 umhos/cm. All these springs eventually flow <br />into the Wa dye Impoundment via Little Grassy Creek. <br />Spoils Spring #7 was located this year in the secondary drainage flowing into the Wadae <br />Impoundment (the primary drainage being Little Grassy Creek). It had a flow of 0.001 cfs <br />and a conductivity (corrected to 25°C) of 4,450 umhoslem. <br />5. Spoils Spring 06 <br />This spring is the only one located in the Wolf Creek spoils and was located just this <br />year. It had a florv of 0.001 efs and a conductivity (corrected to 25°C) of 2,200 <br />umhos/cm, <br />E. Surface Water Summary <br />Stream flans rvere lower in 1986 than in 1985 due to a decrease in winter snae:pack and a <br />longer than normal runoff period caused by an early, warm spring. Hnnu al flows at NPDES <br />Sites 002 and 004 (448 and 254 acre-feet, respectively) were lower in 1586 than the <br />previous two years. Interestingly, the annual precipitation for the 1986 water year <br />(24.85 inches) was higher than the previous years. Atso of interest is the fact that <br />total disturbance area above NPDES Site 004 has increased. This suggests that fiactors <br />other than precipitation and total upd rainage disturbance area have a significant effect <br />on total annual runoff from mined areas. In the case of the 002 pond, more water has been <br />pumped from it (siphoned io the truck rvash pond, etc.) than in previous years, In <br />contrast, total flow increased 20 acre-feet at NPDES Site 003 during 1986 as a result of <br />53 <br />