Record Display for the EPA National Library Catalog

RECORD NUMBER: 136 OF 143

OLS Field Name OLS Field Data
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
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101O9OE.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-2-76-114 Headquarters Library/Washington,DC 02/03/2014
EJBD  EPA 600-2-76-114 Headquarters Library/Washington,DC 07/15/2014
EKAM  EPA-600/2-76-114 Region 4 Library/Atlanta,GA 12/17/1999
ESAD  EPA 600-2-76-114 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-253 766 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
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).