PERMFILE67692

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 49 PHC Modification Support Tables
• Media Type: D
• Archive: No

Table E49-26
U
MINE DISCHARGE CALCULATOR -WINTER CONDITIONS
Month: December Year: 1999

'100 cfs Flow rate, Yampa River below Steamboat Springs
550 umhos/cm Cmv Conductivity, Trout Creek below Middle (Site 69), present
6.8 cfs Qmv Flow rate, Trout Creek below Middle (Site 69), calculated
605 umhos/cm Crv Conductivity, Trout Creek below Fish (Site 1005), present
8.8 cfs Irv Flow rate, Trout Creek below Fish (Site 1005), calculated
7300 umhos/cm CS Conductivity, Site 115 discharge
300 gpm Qsv Discharge Rate, Site 115, present
3900 umhos/cm Cy Conductivity, Site 109 discharge
342 gpm Qsv Discharge Rate, Site 109, present
.~> ......,..;.na.
~:Z$2~~; gpm
Qse
Discharge Rate, Site 115, allowed
?~dd:(t^:`:'' gpm Qsv Discharge Rate, Site 109, allowed
18 gpm Qse = t]~ -Qsv (change in discharge from site 115)
98 gpm Qsa = Qsa -Qsv (change in discharge from site 109)
740 umhos/cm Cm~ Conductivity, Trout Creek below Middle (Site 69), max allowed
Limit does not apply to Site 69 in March through May
740 umhostcm Crv Conductivity, Trout Creek below Fish (Site 1005), max. allowed
•
TR 9432
655 umhos/cm Cm~ Conductivity, Trout Creek below Middle (Site 69), calculated
655 umhos/cm Ck Conductivity, Trout Creek below Fish (Site 1005), calculated
To automatically determine discharge rate from Site 109 press button Set Site 109
Run this calculation before calculating 115 discharge
To automatically determine discharge rate from Site 115 press button Set Site 175
If load from Site 109 is too high this will not work
(input data into Yellow cells, change bright Yellow cells until C,,,~ and Ck are not REO)
Flow rates for Stations 69 and 1005 calculated from flow in Yampa River below
Steamboat Springs when tlow can not be measured at Sites 1005 and 69
Table E49-26 (Page 2 of 4) 1/03/00
APPR®1/E9D FE3 0 0 2000