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Sigmon's Septic Tank Service

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Site Summary Profile
EPA ID: NCD062555792
Location: Statesville, Iredell County, NC
Lat/Long: 35.713610, -080.974580
Congressional District: 05
NPL Status: Proposed: 09/23/04; Final: 04/27/05
Affected Media: Ground water, Soil
Cleanup Status: Construction Complete – physical cleanup activities have been completed
Human Exposure Under Control: Yes
Groundwater Migration Under Control: Yes
Sitewide Ready for Anticipated Use: No
Site Reuse/Redevelopment: None
Site Manager: Beverly Stepter (stepter.beverly@epa.gov)

Current Site Status

The Sigmon's Septic Tank Service site includes an area where a septic waste storage facility operated from 1978 until 1992. EPA placed the site on the National Priorities List (NPL) in 2005 because of contaminated ground water and soil resulting from facility operations. EPA and the North Carolina Department of Environment and Natural Resources (NCDENR) have investigated site conditions and taken steps to clean up the site in order to protect people and the environment from contamination. Site contamination does not currently threaten people living and working near the site. By monitoring ground water, EPA and NCDENR continue to protect people and the environment from site contamination.

Site Location and Background

The 15-acre site is located on Eufola Road, five miles southwest of Statesville, Iredell County, North Carolina. The site includes a 1.25-acre pond that served as a former borrow pit, several structures, six aboveground storage tanks containing liquid wastes, and a stockpile. Eufola Road borders the site to the north. Lauren Drive borders the site to the south. Residential properties border the site to the east and west. The site’s broader surroundings include residential land uses as well as undeveloped and agricultural land. The Catawba River is 1.5 miles southwest of the site.

From 1978 until 1992, a septic waste storage facility operated on site. Operations disposed of septic waste in unlined lagoons. In 2005, EPA listed the site on the NPL. The site is not in use. The site can support industrial use.

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Threats and Contaminants

Site investigations found contamination in ground water and soil that could potentially harm people in the area. Contamination resulted from waste handling practices at the site. Contaminants of concern include arsenic, manganese, iron, 1,4 dichlorobenzene and mercury.

Contamination affected ground water on site and off site. EPA determined that contamination does not currently affect any private wells.

EPA considered children’s health issues as part of the site’s risk assessment. EPA has placed filters on some private wells of homes where children reside.

EPA has cleaned up soil contamination. The site can support industrial use.

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Investigation and Cleanup Responsibility / Oversight

EPA leads site investigation and cleanup activities in cooperation with NCDENR.

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Site Cleanup Plan

Site investigations and cleanup activities have focused on two areas, which EPA refers to as operable units, or OUs. These areas include OU-1: contaminated soil; and OU-2: contaminated ground water.

In 2006, EPA issued a cleanup plan (a Record of Decision, or ROD) for OU-1. However, in 2009, EPA issued an amendment to the cleanup plan (a ROD Amendment) for OU-1. The amended cleanup plan included the following activities:

In 2009, EPA issued a cleanup plan (a ROD) for OU-2. The plan included monitored natural attenuation to address ground water contamination.

Summaries of site cleanup approaches are also available online in key site cleanup documents, including the RODs.

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Cleanup Progress

In 1995, EPA dug up septic wastes and placed them in a stockpile.

In 2006, EPA conducted a non-time-critical removal action at the site. Activities included installing filters on private drinking water wells and providing bottle water to residents potentially affected by contaminated ground water.  

From 2007 until 2009, EPA conducted the remedial investigation/feasibility study for the site. 

In 2009, EPA removed 2,700 tons of contaminated soil and began the monitored natural attenuation program to address contaminated ground water.

In 2009, EPA also completed cleanup activities and issued a Preliminary Close Out Report for the site.

EPA received $902,000 in American Recovery and Reinvestment Act (ARRA) funds to complete site cleanup activities. The use of ARRA funds provided investment in the local community, supplying short-term work to an estimated 125 dump truck operators. In 2010, EPA recognized the site as the first Superfund site with cleanup activities completed using ARRA funds.

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Enforcement Activities

EPA is using federal funds for site activities.

The RODs online provide additional information on enforcement activities.

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Community Involvement

EPA has worked with the community and its state partner to develop a long-term cleanup plan for the site, reflecting the Agency’s commitment to safe, healthy communities and environmental protection. Community engagement and public outreach are core components of EPA program activities.

EPA has conducted a range of community involvement activities to solicit community input and to make sure the public remains informed about site activities throughout the cleanup process. Outreach efforts have included public notices, interviews and information meetings. EPA also held a public meeting in 2009 at Celeste Henkel School to discuss the cleanup activity options and to hold a public comment period.

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Future Work

Monitored natural attenuation is ongoing.

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Additional Information

EPA keeps additional site documents and information in a site information repository at the location below. EPA also posts site documents, when available, on EPA’s CERCLIS Site Profile page. For documents not available on the website, please contact the Region 4 Freedom of Information Office.

Site Repository

Iredell County Library
201 North Tradd Street
Statesville, NC 28117

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