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Table VI-1 -- Effluent Limitations for All Outfa[ls <br />Discharge Limitations <br />Parameter Maximum Concentrations Rationale <br />30-Day Avg. Daily Max. <br />Flaw, MGD Report Report Design Capacity <br />TSS, mg/1 * 35 70 Federal Effluent Guidelines <br />Total /ron, mg/l * 3.0 6.0 Federal Effluent Guidelines <br />Settleable Solids, ml/1 * Report Report Federal Effluent Guidelines <br />Oil and Grease, mg/l Report 10 State Effluent Regulations <br />pH, s. u. (minimum-maximum) N/A 6.5-9.0 Water Quality Standards <br />* Total Suspended Solids and Tola7 /ron limitations are Primary Limitations, and Settleable Solids limitations are Alternate Limitations. Exemption from (hese <br />limitations due to storm events is subject to burden of proof requirements -see section VLA3.6) of previous permit rationale. <br />a) Antideyradation: Since the receiving waters are Use Protected, an antidegradation review is not required for these <br />dischargespursuanttosection31.8(2)(b)ofTheBasicStandardsandMethodoloQies or Surface Water. Further, the Division <br />has determined that the antidegradation presumption was overcome because discharge does not occur during low flow <br />periods. <br />b) Whole EffluentToxicity (WET) Testing: Acute WET testing is not required for all the outfalls. Since the mine drainagesource <br />was eliminatedfrom this permit, and that the new and existing discharges from these outfalls contain surface runoffsolely and <br />do not contain toxic pollutants in toxic amounts. On this basis, WET testing is not a requirementforthese outfalls. However, <br />the Division reserves the right to reopen the permtt to include WET testing, should facility conditions change or if new <br />information becomes available. <br />B. Monitoring <br />1. Effluent Monitoring: Effluent monitoring will be required as shown in Tables VI-2. Refer to the permit for locutions of monitoring <br />points. <br /> Table VI-2 -Monitoring Requirements for All Outfalls <br />Parameter Measurement Frequency Sample Type <br />Flow, MGD Weekly Instantaneous or Continuous <br />TSS, mg/1 Monthly Grab <br />Totallron, mg/1 Monthly Grab <br />Settleable Solids, ml/l Monthly Grab <br />Oi[ and Grease, mg/1 Weekly Visual a/ <br />pH, s. u. Weekly In-situ <br />YII. PERMIT CHANGES AS A RESULT OF THIS PERMIT AMENDMENT <br />As a result ojthis amendment, pages 1 through 5, and Figure /, were amended to include the outfalls listed in table I!-1 as well as those <br />eliminated from this permit. <br />Christopher L. Gates <br />September IQ 2001 <br />VIII. PUBLIC NOTICE COMMENTS <br />No comments were received during the public notice period. <br />Christopher L. Gates <br />October 22, 2001 <br />