Main Title |
Trough Creek limestone barrier installation and evaluation / |
Author |
Yocum, S. Curtis.
|
CORP Author |
Africa Engineering Associates, Inc., Huntingdon, Pa.;Industrial Environmental Research Lab., Cincinnati, Ohio. |
Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; Available from National Technical Information Service, |
Year Published |
1976 |
Report Number |
EPA-600/2-76-114; EPA-14010-FWW |
Stock Number |
PB-253 766 |
OCLC Number |
02659910 |
Subjects |
Acid mine drainage
|
Additional Subjects |
Mine waters ;
Neutralizing ;
Limestone ;
Water pollution control ;
Trough Creek ;
Barriers ;
Acidity ;
pH ;
Design ;
Stream flow ;
Performance evaluation ;
Pennsylvania ;
Mine acid drainage
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-2-76-114 |
|
Headquarters Library/Washington,DC |
07/15/2014 |
ELBD ARCHIVE |
EPA 600-2-76-114 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 600-2-76-114 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-253 766 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
viii, 93 pages : illustrations, maps ; 28 cm. |
Abstract |
Six prototype crushed limestone barrier installations were constructed in Trough Creek in South Central Pennsylvania to demonstrate the neutralizing ability of this type structure in low-iron acidic streams. Limestone barrier performance was excellent during periods of low streamflow, in terms of reducing acidity and raising the pH of the water, but their effectiveness was marginal at design or average streamflow, and they were ineffective when high runoffs were experienced. Limestone barrier performance deteriorates after the structures are initially constructed and placed in operation, because progressive accumulations of sediment clog interstices between the stones, which lessens the hydraulic conductivity of the barriers, and surfaces of the stones become coated with silt, which causes a reduction in reactivity of the reagent (limestone) with flowing acidic water. The design of limestone barriers should take these factors into account, and the units should be sized sufficiently large to overcome this deficiency. |
Notes |
Includes bibliographical references (page 72). |