STUDY NUMBER ; 4.1 (COMPLETED) 



ORGANIZATION ; Montana Department of Health and Environmental 

 Sciences (MDHES) - Water Quality Bureau 



TITLE OF STUDY ; Lower Clark Fork River Monitoring 



CONTACT(S) : Loren Bahls - Water Quality Project Leader - 



444-2406 



Steve Pilcher - Water Quality Bureau Chief - 

 ,, 444-2406 



' Gary Ingman - Water Quality Specialist - 444-2406 



OBJECTIVE ; Establish a chemical, physical and biological water 

 quality baseline for the Clark Fork River below Rock Creek; uti- 

 lize this information, in part, during preparation of an Environ- 

 mental Impact Statement for Stone Container Corporation's (Cham- 

 pion International) Wastewater Discharge Permit. 



DURATION ; 1984 - 1987 



CURRENT STATUS ; From March 1984 to August 1985, a total of twen- 

 ty-five monitoring runs were conducted (an approximate frequency 

 of once every three weeks) at the following sixteen sampling 

 stations; 



01 Clark Fork at Turah 



02 Blackfoot River at mouth 



03 Clark Fork below Milltown Dam 



04 Clark Fork above Missoula WWTP 



05 Missoula WWTP discharge 



06 Clark Fork at Sheffield's 



07 Bitterroot River near mouth 



08 Clark Fork at Harper Bridge 



09 Stone (Champion) discharge(s) 



10 Clark Fork at Huson 



11 Clark Fork near St. Regis 



12 Flathead River near mouth 



13 Clark Fork above Thompson Falls Reservoir 



14 Clark Fork below Thompson Falls Dam 



15 Clark Fork below Noxon Rapids Dam 



16 Clark Fork below Cabinet Gorge Dam 



Fifteen additional mainstem sites were sampled three to 

 four times per year, including surface and bottom samples from 

 deepwater pools and reservoirs. 



Parameters that were routinely analyzed included; Heavy 

 metals (total recoverable): Cu, Zn, Fe, Mn, As, Cd. Algal Nu- 

 trients; total phosphorus, orthophophorus , nitrate, kjeldahl 



22 



