NOCS or NCS destined for off-site treatment or disposal shall be sampled and analyzed in accordance with the following prior to transportation off-site:

1. (a) Subject to (c), below, for stockpiled contaminated soils destined for off-site treatment or disposal, the responsible party shall collect representative samples in accordance with the following:

   1. (1) At least one composite sample shall be collected for every 200 tons destined for off-site treatment or disposal up to 2,000 tons, plus at least one composite sample for every 500 tons above the initial 2,000 tons;
   2. (2) Each composite sample shall consist of at least 8 discrete samples collected from the stockpile; and
   3. (3) Each discrete sample shall be taken from newly exposed soil a minimum of 12 inches deep within the stockpile and combined with the other required discrete samples to complete each composite sample;

2. (b) Subject to (c), below, for in-situ contaminated soils destined for off-site treatment or disposal, the responsible party shall collect representative samples in accordance with the following:

   1. (1) At least one boring or test pit shall be completed for every 200 tons destined for off-site treatment or disposal up to 2,000 tons, plus at least one boring or test pit for every 500 tons above the initial 2,000 tons;
   2. (2) The boring or test pits required by (1), above, shall be completed on an evenly-spaced grid pattern throughout the contaminated soil area;
   3. (3) At least one boring or test pit shall be located in the most contaminated soil area;
   4. (4) At least one soil sample shall be collected from the contaminated zone of each boring or test pit required by (1) through (3), above;
3. (c) If the quantity of NOCS is less than 50 tons, sampling and analysis shall not be required except as required by the receiving facility; and
4. (d) Representative soil samples collected in accordance with (a) or (b), above, shall be analyzed for the chemicals of potential concern as identified through a history of site ownership and operation based on documented land use in accordance with ASTM E1527-21, dated 2021, available as noted in Appendix B, and previous sampling, and in accordance with the receiving facility’s requirements.

Source. (See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07; ss by #10831, eff 6-1-15; ss by #14419, eff 11-4-25, EXPIRES: 11-4-35