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CC`L(~`RP.DO DEPAP.;'`:E`:T GF HE:1,TF <br />• 'Tatar Cvalit~, Control rvivisior, <br />r:a:iona!e Paze <br />STA"r <br />Both State Effluent Standard (SES) and Water Quality Standard (WQS) <br />'_imltations apply [o this ou[fail. The applicable WQS and SES limita[ior.s are <br />show^ in Table 1. <br />Table 1 <br /> Federal Limitations State Limitations <br />Parameter 8PT BAT SES EL <br />pF (s.u.) 6.0-9.0 N/A 6.0-9.0 6.5-9.0 <br />Tota_'.esidual Chlorine (mg/1) N/A N/A 0.5 2.56 <br />Oil end Grease (mg/1) N/A N/A 10.0 N/A <br />BCDS (mg/1) N/A N/A 30/45 N/A <br />Total Suspended Solids (mg/1) 35/70 N/A 30/45 K/A <br />Fecal Coliform (l.`/100 ml) N/A N/A 6000/12000 N/A <br />Total Iron (mg/1) 3.5/7.0 3.5/7.0 N/A 1966 <br />Total Copper (mg/1) N/A N/A N/A 8.55 <br />Tot-:! ~.:•ter (mgii) N/A N/A N/A 0.0855 <br />~c~a: '~.'.mium (mg/1) N/A N/A N/A 0.855 <br />• ':oral "~lenium (mg/I) <br />Total t'ercury (mg/1) N/A <br />N/A N/A <br />N/A N/A <br />N/A 8.55 <br />0.0427 <br />DSssc~ved Manganese N/A N/A N/A 42.7 <br />The above WQS-haled limits were derived based on the formula: <br />EL = WQS (Q7-10 + QEFF) - ~''1B x Q7-10 <br />EFF <br />Where: <br />-L = Effluent Limitations <br />WQS= The water quality standard <br />~~~-10 The receiving water - 7-day, 10-}•ear low flow <br />(140 cfs-White River) <br />CEFF The design flow for outfall 004 (0.164 cfs) <br />:;?B = Instream ambient data (none available, thus = zero) <br />Gisc`.arge is to Scullion Gulch, a normally dry tributary to [he White River, <br />which is 2 miles downstream. Scullion Gulch is par[ of Segment 13a of the <br />White River sub-basin. Segment 13a has no assigned water quality standards. <br />Because it is likely that the flow from t'004 will reach the White River the <br />water auali[y impact was assessed for Segment 12, the segment Scullion Gulch <br />floes into. The results of this assessment are shown in Table 1. <br />• It is felt [hat none of the WQS-based limitations fot metals shown in Table 1 <br />need [o be imposed based on the table of expected effluent quality submitted <br />by Westetn Fuels with the amendment application. It is not expected [hat <br />effluent quality would exceed any of the WQS-based limits. The table of <br />expected effluent quality is included Sn this rationale as Appendix A. <br />