Full Record Display for the EPA National Library Catalog


Main Title Development of a Recommended System for Determining NPDES Method Equivalency.
Author Fulk, R. J. ; Huibregtse, K. R. ; Kobriger, N. ; Wullschleger, R. ; Kane, J. E. ;
CORP Author Envirex, Inc., Milwaukee, WI. Environmental Sciences Div.;Environmental Monitoring and Support Lab.-Cincinnati, OH.
Year Published 1978
Report Number EPA-68-63-2595; EPA/600/4-78/065;
Stock Number PB-289 410
Additional Subjects Water analysis ; Statistical tests ; Water quality ; Chemical analysis ; Equivalence ; Test methods ; Evaluation ; Specifications ; Variance(Statistics) ; Comparison ; Industrial wastes ; Sewage ; Outfalls ; Concentration(Composition) ; Municipalities ; United States ; Water pollution sampling ; National Pollutant Discharge Elimination System
Library Call Number Additional Info Location Last
NTIS  PB-289 410 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 143p
Abstract Environmental Protection Agency mandated by PL 92-500 to establish a National Pollutant Discharge Elimination System (NPDES) which involves specification of approved test procedures. This was ammended to include provisions allowing the use of alternate procedures. Both nationwide and limited use (specific permit holder) variances are involved. The recommended protocol for nationwide variance evaluation included sampling of five industrial effluent categories and possibly one municipal effluent. Six samples would be collected and analyzed in duplicate by both the proposed and approved analytical methods. Data evaluation would include a Moments test for normality followed by transformation, if required. The method comparison would involve a pared t-test and regression on the sample means. Data should be analyzed by industrial category and all together in order to identify if the method comparability was limited to certain discharges. Applicants for limited use variances would be required to sample fewer outfalls, however, six samples should be collected which reflect as wide a concentration range as possible. Data analysis is the same as that recommended for a nationwide variance. The recommended statistics were considered applicable for evaluating drinking water variance requests also, and some implementation procedures are included for this system.
NTIS Title Notes Final rept..
PUB Date Free Form Dec 78
Category Codes 13B; 68D; 99A
NTIS Prices PC A07/MF A01
Primary Description 600/06
Document Type NT
Cataloging Source NTIS/MT
Control Number 323753513
Origin NTIS
Type CAT