Main Title |
Alaska placer mining metals study : year two / |
Author |
Goulet, J. ;
Frank, D. ;
Ryding, K. ;
Edmond, L.
|
CORP Author |
Environmental Protection Agency, Seattle, WA. Region X. |
Publisher |
United States Environmental Protection Agency, Region 10, |
Year Published |
1999 |
Report Number |
EPA 910-R-99-004 |
Stock Number |
PB99-169146 |
OCLC Number |
42359366 |
Subjects |
Hydraulic mining--Alaska
|
Additional Subjects |
Alaska ;
Placer mining ;
Environmental effects ;
Water quality ;
Mines ;
Metalliferous mineral deposits ;
Ore deposits ;
Metals ;
Placers ;
Mine wastes ;
Surface waters ;
Water sampling ;
Water chemistry ;
Turbidity ;
Dissolved solids ;
Suspended solids ;
Water temperature ;
Hardness(Water) ;
Electric conductivity ;
PH factor ;
Ecological concentration
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
ESAD |
EPA 910-R-99-004 |
2 copies |
Region 10 Library/Seattle,WA |
06/13/2016 |
NTIS |
PB99-169146 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
1 v. (various pagings) : ill., maps ; 28 cm. |
Abstract |
EPA sampled four placer mines in Alaska during the summer of 1998. This was the second phase of a study of the distribution of metals in surface water at placer mines in surface water upstream of the mine site, downstream of the mine discharge, and in the effluent. The second phase examines temporal variations from eight rounds of measurements collected during 1998 from four placer mines located in three mining districts. During the second phase in 1998, EPA obtained field measurements of temperature, pH, electrical conductivity, dissolved oxygen, turbidity, and settleable solids. In addition, EPA analyzed samples for total suspended solids, total recoverable metals, dissolved metals, and hardness. The metals analyses included aluminium, antimony, arsenic, cadmium, calcium, chromium, copper, lead, magnesium, mercury, nickel, selenium, silver, and zinc. The 1998 data show typically large variations in total recoverable and dissolved metals concentrations through the course4 of the mining season. Consistent with 1997 results, turbidity was an effective indicator for some, but not all, total recoverable metals found in surface waters. In addition to turbidity, total suspended solids measurements showed similar variations with total recoverable metal content. |
Notes |
"April 1999." "EPA 910-R-99-004" |
Place Published |
Seattle, Wash. : |
Supplementary Notes |
See also PB98-145998. |
Availability Notes |
Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.fedworld.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
Corporate Au Added Ent |
United States. Environmental Protection Agency. Region X. Office of Environmental Assessment. |
PUB Date Free Form |
1999. |
NTIS Prices |
PC A07/MF A02 |
BIB Level |
m |
Cataloging Source |
OCLC/T |
OCLC Time Stamp |
19990913115227 |
Language |
eng |
Origin |
OCLC |
Type |
MERGE |
OCLC Rec Leader |
00843nam 2200217Ka 45010 |