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    M. Alex Mcgilvary

Boonville, NC

    CSM Environmental
    P.O. Box 99
    Boonville, NC 27011
    Ph. (336) 367-4145
    Fax (336) 367-4772

Residential heating oil USTs.

CSM Environmental, PLLC offers soil testing, site assessment and consulting services to address the environmental concerns regarding residential UST that are associated with property transactions. CSM Environmental is registered with the State of NC as a “Geologic Corporation.”

  • Many older homes in the Piedmont Triad area of North Carolina were constructed with underground storage tanks (USTs) used to store fuel oil for the heating of residence. Generally, the buried fuel oil tanks at homes in the Winston Salem and Western Piedmont area are 270 to 550 gallons in size. Larger homes and those located in the mountains been found to have 1,000 gallon USTs. As these houses have been remodeled and updated, these buried tanks were often taken out of service and the oil-fired furnace replaced by another type of heating systems. These inactive or abandoned USTs often become an environmental concern associated with the sale of residential property or other types of property transfers.

  • Residential heating oil USTs, less than 1,100 gallons, are not subject to NC Department of Environment and Natural Resources (NCDEQ) regulations unless they are found to have leaked or are confirmed to be leaking. The NCDEQ – Underground Storage Tank (UST) Section has set an “Initial Action Level” of 10 parts per million (ppm) for petroleum constituents in soil. Soil sample analytical results indicating the presence of heating oil concentrations greater than 10 ppm are currently considered impacted by the NCDEQ and require remediation.

  • A residential heating oil UST investigation requires a visit to property to locate the buried tank and collect samples from the immediate tank area. Typically, the site visit, soil sampling and data collection can be performed in about 4 hours, depending on the accessibility of the tank area and depth of the tank burial. The collected sample(s) are evaluated on-site by the CSM geologist and submitted to a NC Certified laboratory for analytical testing to detect the presence of heating oil constituents. Generally, the results of soil sample laboratory testing are available in about 1 week of the site visit. Should your project have a shorter time deadline, expedited lab analyses are available at additional cost.

  • Upon receipt of the report of laboratory analyses, CSM will review the field data and laboratory report and make recommendations to the client regarding the investigative findings. As required by the client or their lender, CSM Environmental will prepare a letter of findings summarizing the soil sample laboratory results compared the State Initial Action levels.