The Sigmon?s Septic Tank site is located in Statesville, Iredell County, NC. During operations, the business pumped septic tank wastes and
heavy sludge from residential, commercial, and industrial customers; installed and repaired septic tanks; and provided a variety of industrial
waste removal services. From 1978 to 1992, Sigmon?s disposed of septic wastes in 8-10 unlined lagoons (encompassing approximately 1.2 acres) on
the south section of the 15-acre property. The waste was described as septage, grease, and a milky-white liquid. Lead, nitrate and mercury have
been detected in seven drinking water wells in quantities that exceed drinking water standards.
Current Site Status and Cleanup Actions to Date
- In 2005, EPA completed a cleanup investigation and feasibility study to address the site?s contaminated soils, sediments and surface water.
- Private wells have been sampled extensively in the vicinity of the site, and in 2006, EPA conducted a time-critical short-term action to
install filters on 7 residential wells in the site vicinity.
- On 2006, EPA selected a cleanup plan to address the contaminated soils, which calls for excavation, treatment and disposal at a licensed
- In 2007, the design for the cleanup approach to address the soils, sediments and surface water was completed.
- In June 2008, EPA completed a cleanup investigation for ground water at the site.
Current Funding Status
- Cleanup actions addressing contaminated soils through excavation, treatment and disposal were not funded in Fiscal Year 2008.
- To date, EPA has obligated approximately $31,000 for cleanup activities at this site.
For more information on this site, please read the
Sigmon's Septic Tank site fact sheet
(http://www.epa.gov/region4/superfund/sites/npl/northcarolina/sigseptanc.html) on the Region 4 Superfund web site.
- Completed a short-term action in 2006 to install filters on residential wells in the site vicinity
- Selected the cleanup plan to address the contaminated soil, sediments and surface water for the site in 2006
- Completed design for the soil, sediments and surface water cleanup in 2007
- Finalized cleanup investigation tied to the site?s ground water in 2008