Record Display for the EPA National Library Catalog

RECORD NUMBER: 39 OF 47

OLS Field Name OLS Field Data
Main Title Stream Chemistry in the Southern Blue Ridge: Feasibility of a Regional Synoptic Sampling Approach.
Author Messer, J. J. ; Ariss, C. W. ; Baker, J. R. ; Drouse, S. K. ; Eshleman, K. N. ;
CORP Author Utah State Univ., Logan. ;Oregon State Univ., Corvallis. Dept. of Statistics. ;Northrop Services, Inc., Corvallis, OR. ;EG and G Idaho, Inc., Idaho Falls.;Corvallis Environmental Research Lab., OR.
Publisher c1988
Year Published 1988
Report Number EPA-R-812049; EPA/600/J-88/417;
Stock Number PB90-108309
Additional Subjects Stream pollution ; Ground water ; Water chemistry ; Neutralizing ; pH ; Seasonal variations ; Sampling ; Sulfates ; Graphs(Charts) ; Reprints ; Acid deposition ; Nitrates ; National Stream Surveys
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB90-108309 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/10/1990
Collation 11p
Abstract
A pilot study, which was conducted in the Southern Blue Ridge geographical province of the Southeastern U.S., demonstrated the feasibility of a probability-based regional synoptic design for the National Stream Survey, which is a project aimed at estimating the number and percentage of streams in various regions of the U.S. that are acidic or at risk from acid deposition. Estimated population distributions for key chemical variables were not appreciably affected by week-to-week variability in stream chemistry during the spring index period chosen for the study. Differences were observed in estimated acid neutralizing capacity (ANC), nitrate, and pH frequency distributions between spring and summer. Observations made at the downstream node did not represent the chemistry of the entire reach for some variables (ANC and nitrate). Coefficients of variation in chemical species were low enough to provide a reasonably stable classification of streams based on ANC. Although median ANC, sulfate, and nitrate concentrations were quite low in the region, the probability of finding streams with pH <6.3 is less than 1.3% at the alpha=0.05 confidence level.