REP49077 - Laserfiche WebLink

Home Browse Search

Spoils Springs #3, 4, 5, 7 and 8. These springs all exist in the Yadge seam mining area in the little Grassy Creek basin. Spoils Springs a3 and 4 were sampled Mey 5, 1994. • Spoils Spring N3 drains out of an old mine pit, and exhibited an EC of 4050 umho/cm, which is within the historic range. Spoils Spring #4 is a spring adjacent to Spoils Spring #3 and exhibited en EC of 3800 umho/cm, which is within the historic range. Spoils Spring NS issues out of another old mine pit north of Spoils Spring A'3. bp~L Spr~i.n9~ was sampled on May 9, 1994. It ,Oi~Sp.Cayed-anCEG_o 3790' unthn%bhe tiS'84rs'e t";-ons feco~ All these springs eventually flow into the Madge Impoundment via Little Grassy Creek. Spoils Spring R7 exists at the upper end of the Madge Impoundment. On May 9, 1994, it had an EC of 3820 umho/cm, which is within the historic range SooiLS Spring ft8 is across the road from Spring #2 along the north permit boundary. It is situated in a road ditch and apparently issues from prelaw area spoils to the south. On May 9, 1994, an EC of 3390 umh a/cm was measured, which is within the historic range. Spoil Springs kb and 70. These springs exist in the Mo Lf Creek spoils. On May 9, 1994, Spoil Spring p6 had an EC of 2850 umho/cm, which is within [he historic range. Spoil Spring #[0 was discovered in 1993. It exists along the southwest edge of the Wolf Creek • spoils (Spoil Spring #b exists along the northwest edge of the same spoils). On May 9, 1994, no flow was observed at this site. r: ~--- o~i~ts,'eing_:;~#9.i3~ This spring is located in the area immediately upstream of the 008 pond. This sample site is the largest of several seeps that issue from spoils material. icr.•- On May 9, 1994, it had an EC=o.f 30.7.0 'umho%cm,-which is the-high e's t=on-i•eco`nd; Comparison of Surface Mater Quality to Yater Use Standards. The CDOH has recently revised established water quality standards for most stream segments in the state, including the Yampa River and select tributaries (CDOH, 1992). Surface water in the Grassy Creek Basin is categorized under Segment 12 of the Yampa River, and this segment has only minimal standards established (dissolved oxygen, pH, and fecal coliforms only). Surface water in the Fish Creek Basin (Cow Camp and Bond Creeks) is categorized under Segment 73B. The standards 4or Segment t36 very from those used in prior Annual Hydrology Reports. Those Changes are noted in Table 79. Standards for certain trace metals and ammonia now involve the use of a "Table Value Standard" (TVS) which involves the use of a logarthmic equation • 76