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2025-05-05_PERMIT FILE - C1981010 (23)
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2025-05-05_PERMIT FILE - C1981010 (23)
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Last modified
6/12/2025 9:58:10 AM
Creation date
6/12/2025 9:52:05 AM
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Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Permit File
Doc Date
5/5/2025
Doc Name
pages 4-172 to 4-222z
Section_Exhibit Name
4.8 Hydrologic Impacts
Media Type
D
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No
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• The TSS values ranges from less than 2 to 172 mg/I. The flow ranged from 0 to 1454 gpm. During the <br />years from 1982 through 1984, TDS values were relatively low, however, from 1 985 to the present the <br />TDS concentrations were higher and more similar to the 1981 values. pH values showed no noticeable <br />trends. <br />The concentrations of the parameters at site 005 were significantly lower than the sites discussed above. <br />The TDS concentrations ranged from 190 to 1042 mg/l with an average concentration of 625 mg/l. <br />Accordingly, the conductivity values ranged from 364 to 1350 micromhos/cm with the few higher values <br />occurring during 1986. TSS concentrations ranged between less than 4 and 130 mg/l. The range of <br />discharges for this period was comparable to site 001. Flow measurements ranged from 0 to 2960 gpm: <br />pH and other parameters showed no general trend during this period. <br />Site 007, during this period, had a range of measured TDS concentrations of between 95 and 886 mg/l <br />with an average concentration of 426 mg/I. The flow ranged from 0 to 60 gprn and the TSS values <br />ranged between less than 4 to 2552 mg/I. Some high pH values occurred in periods of no flow; however, <br />these values became acceptable when flow resumed. No trends with time of the concentrations were <br />apparent during this period. <br />Site 008 water quality was similar to that at site 007. The range of TDS concentrations was between 35 <br />and 1980 mg/l with an average of 645 mg/I. Conductivity range between 181 and 2790 micromhos/cm. <br />Flow ranged from 0 to 71 gpm and TSS was measured within a range of less than 4 to 1500 mg/l. The <br />• limited data indicates an increasing concentration of TDS with time at this location; however, some <br />values were low in the later part of the period. pH increased slightly during this period, but was well <br />within acceptable limits. <br />Additional operational surface water quality data can be found in Trapper's Annual Reports (Appendix W) <br />through 2003 and, beginning in 2004, Annual Hydrology Reports to the Division. <br />4-222b <br />',evisiw <br />tkmrove,,__ 141 <br />
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