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RSP-2 <br />• Located on the hillside south of the permanent impoundment HG-8, <br />the spring appears to originate from a shallow perched zone. The <br />limited flow of less than 1 gpm originates during spring snowmelt and <br />slows to virtually nothing during the summer months. The spring <br />appears to come to the surface in two nearly adjacent locations. The <br />field parameters indicate that these two adjacent sites originate from <br />the same source. All flows are directed ultimately to HG-8. <br />RSP-3 <br />Located both adjacent to and below the primary mine access road <br />north of HG-8, this spring also comes to the surface in two locations. <br />The upper zone of flow accounts for one-half of the total flow and <br />surfaces at the toe of the permanent overburden pile into the drainage <br />ditch adjacent to the access road and ultimately flows into HG-8. The <br />lower zone of flow surfaces below the access road and enters the <br />Hayden Gulch stream flow directly. The combined total flow of the two <br />zones accounts for more than 3gpm and was flowing at nearly the same <br />rate as RSP-4. A sample of the water was taken and analyzed for the <br />full suite analysis. <br />RSP-4 <br />• This spring surfaces in two locations. The first site is located <br />approximately 100 feet downstream of the HG-B emergency spillway. The <br />flow originates from the slope immediately above and enters directly <br />into Hayden Gulch. This site. flows approximately 2-3 gpm. <br />Approximately one hundred feet further downstream the spring <br />surfaces again from the slope immediately above Hayden Gulch. This <br />site also flows at 2-3 gpm. These sites represent seep SP-4 <br />encountered prior to mining as discussed in the permit document. It <br />was recognized that the SP-4 discharges would return to normal or to <br />slightly higher than normal after backfilling and reclamation. During <br />1987, RSP-4 was the only spring which flowed (although at a much <br />reduced rate) during the late summer months, while the other sites <br />either dried up completely or remained simply a moist area. <br />When considering all the springs and seeps encountered at HG, <br />RSP-4 is the only spring that represents flow that originates from the <br />base of the backfilled overburden material at the lowest coal seam <br />mined. (Refer to Permit Exhibit 44, Spring Sp-4, Restoration for <br />additional details.) A full suite analysis was completed on a sample <br />of the discharge and is tabulated with the historic analysis of the <br />spring. <br /> <br />-6- <br />