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Risk assessment of point and nonpoin...

Hasegawa, Shuichi.

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Risk assessment of point and nonpoint source pollution on water resources along the Santa Ana River (California).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Risk assessment of point and nonpoint source pollution on water resources along the Santa Ana River (California)./
Author:	Hasegawa, Shuichi.
Description:	69 p.
Notes:	Source: Masters Abstracts International, Volume: 42-02, page: 0557.
Contained By:	Masters Abstracts International42-02.
Subject:	Environmental Sciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1416188

Risk assessment of point and nonpoint source pollution on water resources along the Santa Ana River (California).
Hasegawa, Shuichi.

Risk assessment of point and nonpoint source pollution on water resources along the Santa Ana River (California). - 69 p.

Source: Masters Abstracts International, Volume: 42-02, page: 0557.

Thesis (M.S.)--California State University, Fullerton, 2003.

Water pollution is among one of our greatest concerns, as we now forward into the 21st century. In this research, Non Point Source Pollution (NPSP) and Point Source Pollution (PSP) risks on water resources caused by environmental sensitive sites along the Santa Ana River are assessed with GIS software. The Santa Ana River watershed in Orange County was divided into 27 sub zones. At each sub zone, scores were given to each site and geology types and then their total score, site-average and number of sites in each zone are calculated. The high risk areas are determined with consideration of groundwater flow and other features of the area. Large numbers of sites, permeable geological types, proximity to groundwater aquifer attributes high risk. Though direction of groundwater flow towards the Santa Ana River and the extent of site concentration play important roles for the impacts, the impacts depend on how easy pollutants are attenuated and dispersed.Subjects--Topical Terms:

676987
Environmental Sciences.

Risk assessment of point and nonpoint source pollution on water resources along the Santa Ana River (California).
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100 1 $a Hasegawa, Shuichi. $3 1952218
245 1 0 $a Risk assessment of point and nonpoint source pollution on water resources along the Santa Ana River (California).
300 $a 69 p.
500 $a Source: Masters Abstracts International, Volume: 42-02, page: 0557.
500 $a Chair: W. Richard Laton.
502 $a Thesis (M.S.)--California State University, Fullerton, 2003.
520 $a Water pollution is among one of our greatest concerns, as we now forward into the 21st century. In this research, Non Point Source Pollution (NPSP) and Point Source Pollution (PSP) risks on water resources caused by environmental sensitive sites along the Santa Ana River are assessed with GIS software. The Santa Ana River watershed in Orange County was divided into 27 sub zones. At each sub zone, scores were given to each site and geology types and then their total score, site-average and number of sites in each zone are calculated. The high risk areas are determined with consideration of groundwater flow and other features of the area. Large numbers of sites, permeable geological types, proximity to groundwater aquifer attributes high risk. Though direction of groundwater flow towards the Santa Ana River and the extent of site concentration play important roles for the impacts, the impacts depend on how easy pollutants are attenuated and dispersed.
590 $a School code: 6060.
650 4 $a Environmental Sciences. $3 676987
650 4 $a Hydrology. $3 545716
690 $a 0768
690 $a 0388
710 2 0 $a California State University, Fullerton. $3 1017845
773 0 $t Masters Abstracts International $g 42-02.
790 1 0 $a Laton, W. Richard, $e advisor
790 $a 6060
791 $a M.S.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1416188