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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>J. Hsu</dc:contributor>
  <dc:contributor>L. B. Barber</dc:contributor>
  <dc:creator>J.A. Leenheer</dc:creator>
  <dc:date>2001</dc:date>
  <dc:description>&lt;div id="abstracts" class="Abstracts"&gt;&lt;div id="aep-abstract-id10" class="abstract author"&gt;&lt;div id="aep-abstract-sec-id11"&gt;&lt;p&gt;&lt;span&gt;In January 1999,&amp;nbsp;wastewater&amp;nbsp;influent and&amp;nbsp;effluent&amp;nbsp;from the&amp;nbsp;pretreatment&amp;nbsp;plant at the Stringfellow hazardous&amp;nbsp;waste disposal&amp;nbsp;site were sampled along with&amp;nbsp;groundwater&amp;nbsp;at six locations along the groundwater contaminant&amp;nbsp;plume. The objectives of this sampling and study were to identify at the compound class level the unidentified 40–60% of wastewater&amp;nbsp;organic contaminants, and to determine what organic compound classes were being removed by the wastewater pretreatment plant, and what organic compound classes persisted during subsurface waste migration. The unidentified&amp;nbsp;organic wastes&amp;nbsp;are primarily chlorinated aromatic&amp;nbsp;sulfonic acids&amp;nbsp;derived from wastes from DDT manufacture. Trace amounts of&amp;nbsp;EDTA&amp;nbsp;and NTA organic&amp;nbsp;complexing agents&amp;nbsp;were discovered along with&amp;nbsp;carboxylate&amp;nbsp;metabolites&amp;nbsp;of the common alkylphenolpolyethoxylate&amp;nbsp;plasticizers&amp;nbsp;and nonionic&amp;nbsp;surfactants. The wastewater pretreatment plant removed most of the aromatic chlorinated sulfonic acids that have hydrophobic neutral properties, but the&amp;nbsp;&lt;/span&gt;&lt;i&gt;p&lt;/i&gt;-chlorobenzenesulfonic acid which is the primary waste constituent passed through the pretreatment plant and was discharged in the treated wastewaters transported to an industrial sewer. During migration in groundwater,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;p&lt;/i&gt;&lt;span&gt;-chlorobenzenesulfonic acid is removed by natural&amp;nbsp;remediation&amp;nbsp;processes. Wastewater organic contaminants have decreased 3- to 45-fold in the groundwater from 1985 to 1999 as a result of site remediation and natural remediation processes. The chlorinated aromatic sulfonic acids with hydrophobic neutral properties persist and have migrated into groundwater that underlies the adjacent residential community.&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/S0169-7722(01)00133-4</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier </dc:publisher>
  <dc:title>Transport and fate of organic wastes in groundwater at the Stringfellow hazardous waste disposal site, southern California</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>