20.9.9.20

CONSTITUENTS AND PARAMETERS. Constituents and parameters to be evaluated under the requirements of 20.9.9.1 - 20.9.9.19 NMAC include:

1. A. every constituent listed in the following:

   (1) 40 CFR 258 Appendix I;

   (2) 20.6.2.3103 NMAC, including the parameter of pH;

2. B. all constituents listed in 40 CFR 258 Appendix II, 20.6.2.3103 NMAC, potential toxic pollutants listed in 20.6.2.7 NMAC; and

3. C. the following constituents and parameters:

   (1) calcium (CAS No. 7440-70-2);

   (2) magnesium (CAS No. 7439-95-4);

   (3) potassium (CAS No. 7440-09-7);

   (4) sodium (CAS No. 7440-23-5);

   (5) ammonia (CAS No. 1331-21-6);

   (6) bicarbonate alkalinity;

   (7) carbonate alkalinity;

   (8) total nitrogen;

   (9) total kjeldahl nitrogen;

   (10) total organic carbon;

   (11) phosphate;

   (12) specific conductance;

   (13) temperature;

   (14) depth to ground water; and

   (15) ground water elevation.

4. D. When additional constituents are added to ground water monitoring requirements through updates to the rules cited, the new constituents shall be added to the routine sampling frequency for a particular landfill. Background quality for the new constituent shall be determined after a sufficient number of samples are collected during routine sampling, unless a new constituent is detected above the AML, in which case the procedure in Subsection E of 20.9.9.10 NMAC shall be used to determine background concentration.

5. E. A list of constituents and parameters to be evaluated under the requirements of 20.9.9 NMAC will be made available to the public and posted on the NMED website.

   HISTORY OF 20.9.9 NMAC:

   Pre-NMAC History:

   Material in this part was derived from that previously filed with the commission of public records - state records center and archives:

   EIB 74-1, Solid Waste Management Regulations, filed 05/03/1974;

   EIB/SWMR-2, Solid Waste Management Regulations, filed 04/14/1989;

   EIB/SWMR-3, Solid Waste Management Regulations, filed 12/31/1991;

   EIB/SWMR-4, Solid Waste Management Regulations, filed 07/18/1994.

   History of Repealed Material: 20 NMAC 9.1, Solid Waste Management Regulations (filed 10/271995), repealed 8/2/2007.

   Other History:

   EIB/SWMR-4, Solid Waste Management Regulations (filed 07/18/1994) was renumbered, reformatted, amended and replaced by 20 NMAC 9.1, Solid Waste Management Regulations, effective 11/30/1995.

   That applicable portion of 20 NMAC 9.1, Subpart VIII, Ground Water Monitoring; Corrective Action; Contingency Plan, (filed 10/271995) was renumbered, reformatted and replaced by 20.9.9 NMAC, Solid Waste Facility Ground Water Monitoring System Plan and Ground Water Monitoring Plan; Corrective Action, effective 8/2/2007.

[20.9.9.20 NMAC - N, 8/2/2007]