Record Display for the EPA National Library Catalog


Main Title Well Construction and Purging Effects on Ground-Water Samples.
Author Barcelona, M. J. ; Helfrich, J. A. ;
CORP Author Illinois State Water Survey Div., Champaign.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Year Published 1986
Report Number EPA-R-809966; EPA/600/J-86/373;
Stock Number PB87-203360
Additional Subjects Wells ; Construction materials ; Purging ; Ground water ; Chemical composition ; Water quality ; Halohydrocarbons ; Polyvinyl chloride ; Reprints ; PTFE(Polytetrafluoroethylene) ; Steel 304
Library Call Number Additional Info Location Last
NTIS  PB87-203360 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Multiple well installations of selected casing materials (i.e., polytetrafluoroethylene (PTFE), 304 stainless steel (SS), and polyvinyl chloride (PVC)) were constructed and sampled to determine if well purging and construction procedures would significantly bias chemical constituent determinations in ground water. Water quality results from six monthly sampling dates indicate that proper purging of stagnant water from monitoring wells and isolation of cement seals are essential for the collection of representative chemical data. Significant differences in purged samples taken from PTFE, SS, or PVC wells were observed for total organic carbon and volatile halocarbons, which may be linked to the materials' interaction with ground water. The well casing interferences were not predictably high or low for any of the materials. (Copyright (c) 1986 by the America Chemical Society.)