| Main Title |
Use of Geostatistics to Predict Virus Decay Rates for Determination of Septic Tank Setback Distances. |
| Author |
Yates, M. V. ;
Yates, S. R. ;
Warrick, A. W. ;
Gerba, C. P. ;
|
| CORP Author |
Arizona Univ., Tucson.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Year Published |
1986 |
| Report Number |
EPA-R-811147; EPA/600/J-86/230; |
| Stock Number |
PB87-166849 |
| Additional Subjects |
Ground water ;
Viruses ;
Water supply ;
Septic tanks ;
Sampling ;
Water wells ;
Correlation ;
Mathematical models ;
Enteritis ;
Gastritis ;
Potable water ;
Rural areas ;
Regulations ;
Separation ;
Distance ;
Reprints ;
Drinking water ;
Decay rates
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-166849 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
Water samples were collected from 71 public drinking-water supply wells in the Tucson, Arizona, basin. Virus decay rates in the water samples were determined with MS-2 coliphage as a model virus. The correlations between the virus decay rates and the sample locations were shown by fitting a spherical model to the experimental semivariogram. Kriging, a geostatistical technique, was used to calculate virus decay rates at unsampled locations by using the known values at nearby wells. Based on the regional characteristics of groundwater flow and the kriged estimates of virus decay rates, a contour map of the area was constructed. The map shows the variation in separation distances that would have to be maintained between wells and sources of contamination to afford similar degrees of protection. (Copyright (c) 1986, American Society for Microbiology.) |
| Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v52 n3 p473-479 Sep 86. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Use of Geostatistics to Predict Virus Decay Rates for Determination of Septic Tank Setback Distances. |
| PUB Date Free Form |
c1986 |
| Category Codes |
68D; 50B; 48G |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
715626392 |
| Origin |
NTIS |
| Type |
CAT |
