1. (a) One soil test pit or auger boring shall be taken to a depth of at least 40 inches for each soil mapping unit present on the USDA NRCS county soils map, but no less than one every 5 acres.
2. (b) An analysis of the soil test pits or auger borings required by (a) above, shall be performed that includes a description of the soil profile characteristics, depth to the estimated seasonal high water table, depth to restrictive feature, and depth to bedrock.
3. (c) Soil samples from each field proposed to be used for the land application of domestic septage shall be collected and analyzed in accordance with (e) below, within 6 months prior to submittal of the initial permit application.
4. (d) Soil samples from each field upon which domestic septage has been applied shall be collected prior to the first land application of domestic septage within 6 months prior to renewal of a permit in accordance with Env-Wq 1604.08.

5. (e) The soil samples collected pursuant to (c) and (d), above, shall be analyzed pursuant to the applicable method(s) in EPA SW-846, available as noted in Appendix B, for the following constituents and reported in the following unit of measure:

   1. (1) Total arsenic, measured as mg/kg;
   2. (2) Total cadmium, measured as mg/kg;
   3. (3) Total chromium, measured as mg/kg;
   4. (4) Total copper, measured as mg/kg;
   5. (5) Total lead, measured as mg/kg;
   6. (6) Total mercury, measured as mg/kg;
   7. (7) Total molybdenum, measured as mg/kg;
   8. (8) Total nickel, measured as mg/kg;
   9. (9) Total selenium, measured as mg/kg;
   10. (10) Total zinc, measured as mg/kg; and
   11. (11) Per- and polyfluoroalkyl substances (PFAS) (40 compound list under CWA 1633 and within section F of Table 1610-1), measured as ng/g.

6. (f) Soil samples from each field used for land application shall be collected for the following:

   1. (1) Soil acidity, measured as pH;
   2. (2) Mehlich buffer lime requirement;
   3. (3) Calcium;
   4. (4) Magnesium;
   5. (5) Potassium;
   6. (6) Phosphorus; and
   7. (7) Organic matter.
7. (g) The soil samples collected in (f) above, shall be collected on a yearly basis no more than 90 days prior to the initial application for that year and analyzed through the UNH cooperative extension soil testing program, or by a laboratory using a certified agronomist to calculate nutrients.

Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Wq 1600) #13944, eff 4-27-24