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C culvert(s) beneath the haul road at the point of diversion, and place compacted, armored backfill in the upper segment of the diversion channel, to return the flow of McClane Creek to its original channel. Minewater InflowlDischarge Relevant data is included in Table 1, and comparison to PHC projections is provided in the narrative. Ground Water Sampling Required quarterly monitoring data for Wells GW-1 and GW-3 (water level and field parameters) was provided. CDPS mine water discharge sampling was reported in CDPS discharge reports (see Permit System records, not required to be included in AHR). Non-seep inflow monitoring and field parameter reporting is required...lnflow quantity is calculated/reported in Table 1, described in Narrative, and source locations depicted on Figure 3 Mine Map. Since inflow is characterized as seepage, specific inflow locations were not monitored. However, required quarterly field parameters were reported for mine discharge, as well as additional lab analysis parameters, in Table 6. Surface Water Sampling ~ East Salt Creek upper and lower monitoring sites ISW-1 and SW-8) were monitored quarterly as required. All required laboratory parameters were analyzed during the quarters when samples were obtained. Field parameters were not reported for one of the two flow events captured. McClane Creek was reported to be dry during sampling checks, so the "twice a year if possible" sampling data for McClane was not collected. Some clarification may be warranted regarding the "Upstream" sampling site on East Salt Creek (SW-1). This site is located at the bridge where the McClane Canyon Road crosses East Salt Creek. The McClane sediment pond collects disturbed runoff from the mine bench area and the upper two-thirds of the haul road. The pond discharges into the segment of McClane creek south of the haul road, which enters East Salt Creek downstream of SW-1. Any runoff from the small office area and soil stockpile area SAE's also enter East Salt Creek downstream from SW-1. As such, the "disturbed" runoff from the mine enters East Salt Creek downstream from SW-1. However, there are a couple road ditch outlet locations along the lower road segment that enter the temporary diversion segment of McClane Creek north of the Haul Road. The temporary diversion segment enters East Salt Creek a short distance upstream of SW-1 (see Figure 2.2-3 of the permit application). Perhaps more significantly, mine water pumped out of the mine is discharged directly into McClane Creek in the portal vicinity, and thus enters East Salt Creek via the McClane Creek temporary diversion, upstream of SW-1. Thus, if water sampling at SW-1 were to coincide with mine discharge pumping, the flow at SW-1 would include the minewater discharge flow. During the many years during which McClane was inactive and the mine was not discharging, this was not of concern, but now that the mine is being pumped on a regular basis, it may need to be considered. I assume that the sampler is aware of this and would avoid sampling the creek during periods of mine discharge, but we may want to clarify this in our review letter.