Okla. Admin. Code § 252:515-9-31

Current through Vol. 41, No. 19, June 17, 2024

Section 252:515-9-31 - Background water quality

(a)[RESERVED]

(b)New facilities, with exception.

(1) Except as provided for in (2) of this Subsection, monitoring wells installed at new land disposal facilities shall be sampled quarterly for at least one full year and be consistent with the appropriate statistical procedures and performance standards in the facility statistical analysis plan in 9-52 of this Subchapter, to determine background water quality before waste may be deposited at the facility.

(2) The quarterly background water quality determination at new C&D landfills shall begin no later than thirty (30) days after the initial receipt of waste.

(c)New groundwater monitoring wells at existing facilities. Unless otherwise approved by the DEQ, new groundwater monitoring wells installed after the effective date of this Chapter shall be sampled at least quarterly for one full year and be consistent with the appropriate statistical procedures and performance standards in the facility statistical analysis plan in 9-52 of this Subchapter to establish background water quality.

(d)Required parameters.

(1)MSWLFs. MSWLFs shall, as a minimum, be monitored for:

(A) the following groundwater quality constituents: pH, chemical oxygen demand, specific conductivity, chloride, sulfate, calcium, magnesium, nitrates, sodium, carbonates, potassium; and

(B) those constituents in Appendix A of this Chapter.

(2)C&D landfills. C&D landfills shall, as a minimum, be monitored for the following groundwater quality constituents: pH, chemical oxygen demand, and specific conductivity.

(3)NHIW landfills. NHIW landfills shall, as a minimum, be monitored for:

(A) the following groundwater quality constituents: pH, chemical oxygen demand, specific conductivity, chloride, sulfate, calcium, magnesium, nitrates, sodium, carbonates, potassium; and

(B) other parameters specified in the permit, based on the types of wastes to be disposed.

(4)Other land disposal facilities. Other land disposal facilities shall comply with the groundwater monitoring requirements for MSWLFs.

Okla. Admin. Code § 252:515-9-31

Added at 20 Ok Reg 1151, eff 6-1-03

Amended by Oklahoma Register, Volume 39, Issue 24, September 1, 2022, eff. 9/15/2022