2001-12-11_REPORT - C1980007

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: AHR text
• Annual Report Year: 1989
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

•

Xydlologit Monironng Acrivirits
In addition to the five WECC monitoring loca-
tions, flow data arc available from two USGS
monitoring stations. These stations are Minnesota
Creek downstream of Dry Creek and the North
Fork of the Gunnison River near Somerset, Colo-
rado. The North Fork station is located approxi-
mately ~A-mile upstream of the mine site. Because
the USGS gauging stations are heated, they were
unaffected by freezing temperatures. Data for the
1989 water year Cor these sites are presented in
Appendix B and Appendix C, respectively.
Exhibit I. All known springs in the lease area arc
shown on Exhibit 2.8.1.8. in Volume 3 of the M
and R Plan.
In accordance with U.S. Forest Service (USES)
stipulations, a map of USES water resources has
been included as Exhibit III. Table 3 summarizes
the resources. Some of the USES water resources
are springs. No changes in the USES Water Re-
sources Map are necessary for 1990 because no
new rights were filed for or new uses made in 1989
in the lease area.
Seasonal (three times per year) water samples were
taken at all surface water monitoring stations
except the USGS North Fork station. Measured
parameters included pH, conductivity, temperature,
total dissolved solids, total suspended solids, total
iron, and total manganese. Sampling results are
summarized in Appendix D. Minimum and maxi-
mum information for the entire monitoring periods
Cor the Sylvester Gulch and North Fork Upper
stations is presented in Appendix E.
SPRING WATER
MONITORING
Seven springs were monitored during the 1989
water year (Table 2). Their locations are shown on
Seasonal measurements (three times per year) of
pH, conductivity, temperature, total dissolved
solids, total suspended solids, total iron, and total
manganese were taken at each of the seven springs.
Measured [lows, field parameters, and the results
of laboratory analyses arc presented in Appen-
dix F. Maximum and minimum information for the
entire monitoring period is presented in Appen-
dix E. Bar graphs depicting spring Bows from 1979
to the present have been included as Appendix G.
Except for springs G-la and G-22, 1989 sampling
records were complete. Flows at G-la and G-22
were either nonexistent or insufficient for sampling
during all three sampling periods. Consequently,
no water quality data were acquired.
TABLE 2 Summary of the Dtt. Gunnison No. 1 Mine Spring Monitoring Program
Location Frequency of Discharge Frequency of Water Quality
Measurement Measurement
Springs Above the "F' Seam in the North Fork Drainage Basin
G - 12 3 times per year 3 times per year
G - 14 3 times per year 3 times per year
G - 16 3 times per year 3 times per year
G - 22 3 times per year 3 times per year
G - 24 3 times per year 3 times per year
Springs in or Below the " F' Seam in the North Fork Drainage Basin
G - la 3 times per year 3 times per year
G - 20 3 times per year 3 times per year
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