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Schwartzwalder Mine -Hydrologic Evaluation of Mine Closure and Reclamation 49
<br />Table 22. Compliance Monitoring Stations and Non-Routine Sampling Stations in Ralston
<br />Creek
<br />STATION I NORTHING I EASTING I ELEVATION
<br />NAME
<br />SW-LLHG 726,873.63 2,065,661.22 6358.0
<br />SW-ARH 729,590.23 :2,064,210.64: 6358.0
<br />SW-FBRG ~ 731,700.86 ~ 2,063,819.07 6460.0
<br />SW-BPL 732,105.23 '=:2,063,068.76: 6509.0
<br />SW-DIS001 733,406.0 2,061,299.0 ~_ 6585.0
<br />SW-A001 733,650.46 2,061,153.05 6590.57
<br />SW-AWD ~ 734,870.0 :2,059,850.0: 6639.9
<br />SW-Abv Pl
<br />D-MENA 735,830.0 :2,056,360.0. 6790.0
<br />SHFTMENA ~ 735,960.0 :2,055,850.0: 6835.0
<br />U-MENA 735,940.0 2,055,380.0 6815.0
<br />Note: Coordinates in NAD 27. Stations listed in order from downstream to upstream
<br />DESCRIPTION FREQUENCY
<br />Long Lake Head Gate i Monthly
<br />Above Red Hill ;Variable
<br />First Bridge ~ Variable
<br />Below Property Line =Monthly
<br />Above Discharge Pt A001 I Months
<br />Above Waste Dump ~ Val ble
<br />Above Plant Site :Variable
<br />Downstream of Mena ;Variable
<br />Mena Shaft
<br />Upstream of Mena ~_ Variable
<br />Variable
<br />6.3.3 1998 -1999 Baseline StudyData
<br />Water quality in Ralston Creek was measured approximately monthly at 10 stations during the baseline
<br />data collection period from 1998-1999. The 10 stations are listed in order from downstream to upstream in
<br />Table 23. The analytical suite included constituents for which drinking water Maximum Contaminant
<br />Levels (MCLs) and Colorado instream water quality standards existed at the time.
<br />Table 23. Surface Water Quality Sampling Stations From the 1998-1999 Baseline
<br />Hydrology Study
<br />STATION ;NORTHING EASTING :ELEVATION ;DESCRIPTION
<br />SW-LLHG 726,873.63 2,065,661.22: 6155.00 :Lon Lake Head Gate 1.5 miles downstre
<br />SW-BPL 732,105 23 2,063,068 76 6508 97 Below Property Line (near M~
<br />SW-GS 732,466 73
<br />~ ~ 2,062,546 19 ~ 6533 43 =Guard Shack (near M'
<br />SW-BOS _
<br />696 77
<br />732 ` 2,062,307 12 ` 6543 6015 Below Ore Sorter (near M
<br />,
<br />SW-OS 902.10
<br />732 :2,062,102.41 6551.92 :Ore Sorter Lupstream from Sump3
<br />SW-PL ,
<br />733,088.71 :2,061,744.42 6563.94 Parkin Lot near MW3A
<br />SW-BDIS 733,336.16 2,061,476.31 6577.34 Below Dischar e
<br />SW-A001 ~ 733,650 46 ` 2,061,153 OS ~ 6590 57 Above Discharge (upstream of culvert
<br />SW-UC 734 328.15 2 060,300.99 ' 6618.08 U er Culvert u stream of culvert
<br />SW-Ur 735,102 33 2,059,153.21 6660.82 Urgradient 01,200' E of ro . Bounda
<br />i5 Elevation is approximate (within 1 ft) for station SW-BOS
<br />4109B.071116 Whetstone Associates
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