1. (a) The permittee shall monitor groundwater quality to ensure compliance with the terms of the permit and these rules.
2. (b) The permittee shall monitor surface water points and water supply wells as specified in the permit to ensure that water quality is in compliance with applicable water quality standards and the terms of the permit.
3. (c) The permittee shall install at least one hydraulically up-gradient groundwater monitoring well or, if infeasible to install an upgradient well, install a monitoring well in an area otherwise unaffected by the activities at the facility permitted under the release detection permit to monitor ambient groundwater quality.
4. (d) The permittee shall operate and maintain the monitoring wells, piezometers, and other measurement, sampling, and analytical devices so that they perform to design specifications throughout the life of the monitoring program.
5. (e) The parameters to be monitored shall be determined on a site-specific basis depending on the regulated contaminants associated with the permitted activity.
6. (f) The frequency and location of water quality monitoring shall be determined on a site-specific basis depending on the hydrogeologic characteristics of the site and predicted rates of groundwater flow.
7. (g) The permittee shall submit the results of all sampling and analysis required under a groundwater release detection permit as a data transmittal report prepared pursuant to Env-Or 704.03 to the department no later than the 45 days after the sampling date, except as provided for in Env-Or 703.17 and Env-Or 703.18.
8. (h) Analyses shall be performed by a laboratory certified by the U.S. Environmental Protection Agency (US EPA) or accredited by the department pursuant to Env-C 300.

9. (i) Sampling shall be performed in accordance with:

   1. (1) “Practical Guide for Ground-Water Sampling,” document identification number EPA /600/S2-85/104, US EPA, dated September 1985, available as noted in Appendix B;
   2. (2) “RCRA Ground-Water Monitoring: Draft Technical Guidance,” document identification number PB87107751, US EPA, dated November 1992, available as noted in Appendix B;
   3. (3) “Standard Guide for Sampling Ground-Water Monitoring Wells,” document identification number ASTM D4448-01, dated 2019, available as indicated in Appendix B;
   4. (4) “Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells,” document identification number ASTM D7929-20, dated 2020, available as indicated in Appendix B;
   5. (5) “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods”, SW-846 Third Edition, Final Updates I (1993), II (1995), IIA (1994), IIB (1995), III (1997), IIIA (1999), IIIB (2005), IV (2008), V (2015), VI Phase 1 (2017), VI Phase II (2018), VI Phase III (2019), VII Phase I (2020), and VI Phase II (2021), available as noted in Appendix B;
   6. (6) “Standard Guide for Sampling Waste and Soils for Volatile Organic Compounds”, document identification number ASTM 4547-20, dated 2020, available as noted in Appendix B;
   7. (7) EPA Method 533, November, 2019, referenced in 40 CFR Part 141 and available as noted in Appendix B or EPA Method 537.1, Version 2.0, March 2020, referenced in 40 CFR Part 141 and available as noted in Appendix B for drinking water samples; and
   8. (8) EPA Method 1633A, December, 2024, in EPA Document EPA 820-R-24-007, available as noted in Appendix B, for all other media besides drinking water.
10. (j) Release detection permit reports shall be prepared in accordance with Env-Or 704.03.

Source. #8812, eff 2-1-07; ss by #10832, eff 6-1-15; ss by #14420, eff 11-4-25, EXPIRES: 11-4-35