North Carolina Administrative Code › Title 15A - Environmental Quality › Chapter 02 - Environmental Management › Subchapter L - GROUNDWATER CLASSIFICATION AND STANDARDS › Section .0400 - RISK-BASED ASSESSMENT AND CORRECTIVE ACTION FOR PETROLEUM UNDERGROUND STORAGE TANKS › Section 02L .0412 - ANALYTICAL PROCEDURES FOR SOIL SAMPLES

Current through Register Vol. 39, No. 2, July 15, 2024
(a)
				  Analytical procedures for soil samples required under this Section shall be
				  methods accepted by the US EPA as suitable for determining the presence and
				  concentration of petroleum hydrocarbons for the type of petroleum
				  released.
(b) Soil samples
				  collected, including the most contaminated sample, shall be analyzed as follows
				  in order to determine the risks of the constituents of contamination:
(1) soil samples collected from a discharge
				  or release of low boiling point fuels, including gasoline, aviation gasoline,
				  and gasohol, shall be analyzed for volatile organic compounds and additives,
				  including isopropyl ether and methyl tertiary butyl ether, using EPA Method
				  8260;
(2) soil samples collected
				  from a discharge or release of high boiling point fuels, including kerosene,
				  diesel, varsol, mineral spirits, naphtha, jet fuels, and fuel oil no. 2, shall
				  be analyzed for volatile organic compounds using EPA Method 8260 and
				  semivolatile organic compounds using EPA Method 8270;
(3) soil samples collected from a discharge
				  or release of heavy fuels shall be analyzed for semivolatile organic compounds
				  using EPA Method 8270;
(4) soil
				  samples collected from a discharge or release of used and waste oil shall be
				  analyzed for volatile organic compounds using EPA Method 8260, semivolatile
				  organic compounds using EPA Method 8270, polychlorinated biphenyls using EPA
				  Method 8080, and chromium and lead using procedures specified in Subparagraph
				  (6) of this Paragraph;
(5) soil
				  samples collected from a discharge or release subject to this Section shall be
				  analyzed for alkane and aromatic carbon fraction classes using methods approved
				  by the Director under
				  15A NCAC
				  02H .0805(a)(1);
(6) analytical methods specified in
				  Subparagraphs (1), (2), (3), and (4) of this Paragraph shall be performed as
				  specified in the following references or the most recent version of these
				  references: Test Methods for Evaluating Solid Wastes:Physical/Chemical Methods,
				  November 1990, U.S. Environmental Protection Agency publication number SW-846,
				  is incorporated by reference and may be purchased for a cost of three hundred
				  sixty seven dollars ($367.00) from the Superintendent of Documents, U.S.
				  Government Printing Office (GPO), Washington, DC 20402; or in accordance with
				  other methods or procedures approved by the Director under
				  15A NCAC
				  02H .0805(a)(1);
(7) other EPA-approved analytical methods may
				  be used if the methods include the same constituents as the analytical methods
				  specified in Subparagraphs (1), (2), (3), and (4) of this Paragraph and meet
				  the detection limits of the analytical methods specified in Subparagraphs (1),
				  (2), (3), and (4) of this Paragraph; and
(8) metals and acid extractable organic
				  compounds shall be eliminated from analyses of soil samples collected pursuant
				  to this Section if these compounds are not detected in soil samples collected
				  during the construction of the source area monitoring well required under Rule
				  .0405 of this Section.