Record Display for the EPA National Library Catalog


Main Title Impact of the Schwartzwalder Mine on the Water Quality of Ralston Creek, Ralston Reservoir, and Upper Long Lake.
CORP Author Environmental Protection Agency, Denver, Colo. Technical Investigations Branch.
Year Published 1972
Report Number SA/TIB-25;
Stock Number PB-255 604
Additional Subjects Water quality ; Upper Long Lake ; Radioactive contaminants ; Uranium ore deposits ; Radioactivity ; Sediments ; Water pollution ; Radium isotopes ; Uranium ; Colorado ; Schwartzwalder Mine ; Ralston reservoir ; Ralston creek ; Radium 226
Library Call Number Additional Info Location Last
NTIS  PB-255 604 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 40p
Considering the magnitude of radioactivity concentrations in Ralston Creek and use of the stream as a primary water source for two water supply reservoirs - Ralston Reservoir and Upper Long Lake, Region VIII initiated a limiting monitoring effort to supplement the State/Water Board program. This monitoring activity extended over the period of May through September, 1972. Emphasis was placed on eliminating critical data voids; i.e., radioactivity concentrations in the waters of Ralston Reservoir and Upper Long Lake. In addition to the grab water samples collected from these impoundments, sample collection included the mine effluent, water and bottom sediment samples from Ralston Creek and Long Lake ditch, and bottom sediment samples from the two impoundments.