| Main Title |
Assessment of Water Quality Concentrations and Loads from Natural Landscapes. |
| Author |
E. D. STEIN ;
V. K. Yoon
|
| CORP Author |
Southern California Coastal Water Research Project, El Segundo.; Environmental Protection Agency, San Francisco, CA. Region IX. |
| Year Published |
2007 |
| Report Number |
TR-500 |
| Stock Number |
PB2009-102210 |
| Additional Subjects |
Water quality ;
California ;
Natural loads ;
Anthropogenic activities ;
Water pollution ;
Nutrients ;
Streams
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB2009-102210 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
113p |
| Abstract |
More than 100 waterbodies in southern California have been designated as impaired for their beneficial uses under Section 303(d) of the Clean Water Act for a range of constituents. Despite the number of impaired waterbodies, currently there is no basis for differentiating water quality problems from natural variability. Without knowing the range of natural background levels, it is difficult to discern whether high levels of naturally occurring constituents indicate a pollution problem. Furthermore, lack of information on background concentrations, load, and flux complicates determination of appropriate management targets when remediating impaired waterbodies. To fully evaluate the effect of anthropogenic activities, it is important to describe water quality in streams draining natural environments and to understand the factors that control these natural loadings. The overall goal of this study is to evaluate the water quality contributions and properties of stream reaches in natural catchments throughout southern California. |
| Supplementary Notes |
Appendices are not included in this document. Sponsored by Environmental Protection Agency, San Francisco, CA. Region IX. |
| Availability Notes |
Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| PUB Date Free Form |
Feb 2007 |
| Category Codes |
68D; 48G; 48B; 43F |
| NTIS Prices |
PC A07/MF A07 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
010500660 |
| Origin |
NTIS |
| Type |
CAT |
