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JD -7 Mine — Drainage Design Plan 19 <br />Table 9. Runoff Curve Numbers for JD -7 Mine <br />Description CN <br />Pinyon juniper, grass understory, fair condition, Group C soils 73 <br />Pinyon juniper, grass understory, good condition, Group C soils 61 <br />Gravel road, Group C soils 89 <br />Disturbed ground in mine facilities area 85 <br />Newly graded area, Group B soils 86 <br />Herbaceous -mix of grass, weeds, minor brush, poor condition, Grp B 80 <br />Herbaceous -mix of grass, weeds, minor brush, fair condition, Grp B 71 <br />Herbaceous -mix of grass, weeds, minor brush, good condition, Grp B 62 <br />Sagebrush with grass understory, fair condition, Group C soils 63 <br />Sagebrush with grass understory, poor condition, Group C soils 80 <br />4149A.140207 Whetstone Associates <br />