2002-05-13_PERMIT FILE - C1981018 ‎(2)‎

• Permit No: C1981018
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Doc Name: Please Refer to Illustration 46 for Water Discharge Permit
• Section_Exhibit Name: Illustration 13
• Media Type: D
• Archive: No

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APPEiv~I:~ A
Water quality standard (WQS) based effluent limitations are calculated using
the following mass balance formula:
EL = WQS (Q7-10 + QEFF) - (Q7-10 X CAMB)
QEFF
Where:
EL Calculated effluent limitation (mg/1)
WQS = Applicable water quality standard (mg/1)
Q7-10 Receiving water 7-day, 10-year low flow (140 cfs)
QEFF Maximum effluent flow (0.123 cfs)
CAB Ambient instream concentration (mg/1)*
Following are some specific calculations:
Total Recoverable Iron:
• EL = 2.3 (140 + 0.123) = 2,620 mg/1
0.123
Total Recoverable Manganese:
EL = 1.0 (140 + 0.123) = 1,139 mg/1
0.123
Total Recoverable Silver:
EL = 0.0001 (140 + 0.123) = 0.114 mg/1
0.123
* Far these calculations, ambient data is disregarded.
J