| Main Title |
Technical guidance manual for performing waste load allocations : Book VII : Permit averaging periods / |
| Other Authors |
|
| CORP Author |
Environmental Protection Agency, Washington, DC. Monitoring and Data Support Div. |
| Publisher |
Office of Water Regulations and Standards, Monitoring and Data Support Division, Monitoring Branch, U.S. Environmental Protection Agency, |
| Year Published |
1984 |
| Report Number |
EPA 440/4-84-023 |
| Stock Number |
PB86-178951 |
| OCLC Number |
18189204 |
| Subjects |
Water quality management--Mathematical models ;
Effluent quality--Mathematical models ;
Water--Pollution--Environmental aspects--Mathematical models ;
Hazardous substances--Environmental aspects--Mathematical models
|
| Additional Subjects |
Waste disposal ;
Sewage disposal ;
Streams ;
Manuals ;
Allocations ;
Environmental impacts ;
Licenses ;
Sewage treatment ;
Cost effectiveness ;
Industrial wastes ;
Mathematical models ;
Steady state ;
Stream flow ;
Dilution ;
Requirements ;
Oxygen ;
Dissolved gases ;
Tables(Data) ;
Concentration(Composition) ;
Organic loading ;
Secondary treatment
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAD |
EPA 440/4-84-023 |
|
Region 1 Library/Boston,MA |
02/01/2016 |
| EJBD |
EPA 440-4-84-023 |
|
Headquarters Library/Washington,DC |
07/14/2017 |
| ELBD ARCHIVE |
EPA 440-4-84-023 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ERAD |
EPA 440/4-84-023 |
|
Region 9 Library/San Francisco,CA |
01/07/1994 |
| ESAD |
EPA 440-4-84-023 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB86-178951 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
1 volume (various pagings) : illustrations ; 28 cm |
| Abstract |
The conventional approach to developing Waste Load Allocations (WLAs) is based on a steady state analysis of stream conditions, using a design stream flow (usually the 7Q10) and a receiving water concentration (usually a water quality standard based on chronic criteria) for the pollutant to be allocated. An effluent concentration limit is computed for these conditions, and is used to establish the NPDFS permit conditions. The method used to evaluate the effect of permit averaging periods is based on a probabilistic dilution model (PDM) in which it is assumed that the stream flows, effluent flows and concentration are log-normally distributed and uncorrelated. The log-normal distribution is known to be representative of effluent behavior and to almost always under-estimate the lowest stream flows somewhat. |
| Notes |
Includes bibliographical references (pages 6/1-6/2). Final report. "September 1984." "EPA-440/4-84-023, July 1984, Final"--Cover. "Water"--Cover. U.S. Environmental Protection Agency |
