2020-02-11_PERMIT FILE - C1981038A ‎(2)‎

• Permit No: C1981038A
• IBM Index Class Name: Permit File
• Doc Date: 2/11/2020
• Doc Name Note: delete
• Doc Name: Figures & Tables
• Section_Exhibit Name: delete
• Media Type: D
• Archive: Yes

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TR3LE 5. C.YElfZCRL PRRA7ETER JUSTIcICRTIONS
lJ
September 16, 1982
Chemical Parameter Justification
:Misc. pH a characteristic of water needed to assess the
solubility ranges of the chemical parameters;
a characteristic of rock needed. to assess acid-
base forming potential; effluent limitations of
Rule 4.05.2(7).
Electrical Conductivity an indicator of the general quality of water;
an indicator of the salinity hazard associated
rock materials,
Temperature a characteristic of water needed to assess solu-
bility ranges of the chemical parameters.
Dissolved Oxygen an essential element for aquatic life; increases
in major ion concentrations that may occur as a
result of mining in the western U.S. (Everett,
I979) may affect the natural chemical oxygen
demand, potentially causing oxygen depletion in
a stream.
Total Suspended Solids an indicator of suspended sediment in a stream;
effluent limitations from Rule 4.05.2(7); suspended
• sediment could act as a transport mechanism for
toxic-heavy metals.
Total Dissolved Solids an indicator of the general quality of water;
concentrations may increase in waters near surface
mines zn the western U.S, (Everett, 1979).
Total Combustible Solids an Indicator of the fire hazard potential of
underground mine refuse rock and coal processing wa.
C1i1 and Grease an indicator of oil and grease Leakage into surface
waters.
Lithologic Classification an indicator of general rock teature and tope.
Textural Rnalysis an indicator of textural variability; needed to
9 sand assess erosiveness and suitability of rock material
~ silt to be used as a plant growth medium; a indicator of
$ clay the infiltration and water retention properties of
spoils material.
Saturation Percentage an indicator of the general pZ-;nt growth medium
potential of rock materials; an indicator of the
water holding capacity, expect?d percolation rate,
and clay swelling capacity of root materials; used
• to evaluate the accuracy of reported SRR valves.