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OPTIMUM CLEANUP SCENARIOS FOR VOC’S AND PERCHLORATE IN
BALDWIN PARK OPERABLE UNIT, SAN GABRIEL VALLEY,
SOUTHERN CALIFORNIA
by
Christian Sam
________________________________________________________________________
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(CIVIL ENGINEERING)
August 2008
Copyright 2008 Christian Sam
Object Description
| Title | Optimum cleanup scenarios for VOC's and perchlorate in Baldwin Park Operable Unit, San Gabriel Valley, southern California |
| Author | Sam, Christian |
| Author email | csam1986@yahoo.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Civil Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2008-05-07 |
| Date submitted | 2008 |
| Restricted until | Restricted until 2 July 2010. |
| Date published | 2010-07-02 |
| Advisor (committee chair) | Lee, J.J. |
| Advisor (committee member) |
Lee, V. Williams, D. Wellford, L.C. Moore, J. |
| Abstract | The Baldwin Park Operable Unit (BPOU) in the San Gabriel Valley basin, California has been identified by the USEPA as a groundwater contaminant superfund site. This research employs optimized hydraulic gradient control to cost-effectively remove the contaminant plumes. Perchlorate (PCR) and Volatile Organic Compounds (VOCs), predominantly tetrachloroethene (PCE) and trichloroethene (TCE) are still prevalent in the Baldwin Park Operable Unit (BPOU). This study proposes a methodology that optimizes available groundwater and surface water resources and blocks, traps and reduces the contaminant concentration below the maximum contaminant level (MCL) or notification level (NL).; The current strategy by USEPA and other agencies involved in the cleanup of BPOU is "pump and treat." Pump and treat has not been effective as high levels of PCE, TCE and PCR are still prevalent in BPOU after approximately 14 years of cleanup. Blending groundwater from wells not impacted by the contamination with groundwater from wells impacted by the contamination is a supplemental strategy employed by the water purveyors to circumvent the contamination problem. This research provides an overall systematic strategy to clean up the entire aquifer at BPOU.; The MODFLOW, MODPATH and RT3D modules of Ground Water Vistas (ground water modeling program) are used to generate the ground water flow model, particle tracking model and contaminant transport models. Further migration of the contaminants is limited. Contaminants are rapidly trapped and removed by a set of experimentally designed injection and production wells. The procedure utilizes sequential simulation with optimization to optimally and rapidly remove the contaminants using a hydraulic gradient scheme. The hydraulic gradient scheme was run to test future scenarios using assumed wet and dry cycles from the hydrologic base period.; An economic analysis was performed to compare the cost of the existing system with the cost of the strategy proposed in this study. The strategy proposed in this study resulted in a cost effective solution. |
| Keyword | unconfined aquifer; groundwater contaminants; optimum cleanup |
| Geographic subject | valleys: San Gabriel Valley |
| Geographic subject (state) | California |
| Geographic subject (country) | USA |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Type | texts |
| Legacy record ID | usctheses-m1315 |
| Rights | Sam, Christian |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Sam-20080702 |
| Archival file | uscthesesreloadpub_Volume29/etd-Sam-20080702.pdf |
Description
| Title | Page 1 |
| Full text | OPTIMUM CLEANUP SCENARIOS FOR VOC’S AND PERCHLORATE IN BALDWIN PARK OPERABLE UNIT, SAN GABRIEL VALLEY, SOUTHERN CALIFORNIA by Christian Sam ________________________________________________________________________ A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (CIVIL ENGINEERING) August 2008 Copyright 2008 Christian Sam |
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