New Mexico Administrative Code › Title 20 - ENVIRONMENTAL PROTECTION › Chapter 9 - SOLID WASTE › Part 4 - SOLID WASTE AND REGISTERED FACILITY MAXIMUM SIZE, SITING CRITERIA, AND DESIGN CRITERIA › Section 20.9.4.14 - TESTING AND QUALITY CONTROL FOR LINERS AND FINAL COVERS

Current through Register Vol. 35, No. 13, July 16, 2024
A. All testing of geosynthetic and soil
				materials shall be performed in accordance with applicable American society of
				testing materials (ASTM) standards.
B. The construction and installation of all
				liners and final covers shall be done in accordance with a quality control plan
				approved in the permit. All testing and evaluation of liners shall be certified
				by a professional engineer licensed in New Mexico and experienced in liner
				installation, and shall be completed prior to the placement of the protective
				cover. All field testing of liners and final covers shall be the responsibility
				of an individual experienced in liner or cover installation and soils or
				geotextile engineering, as appropriate. The quality control plan shall:
(1) define the procedures required for
				obtaining samples and testing and reporting the test results for the
				installation of the liner and final cover;
(2) describe and illustrate to operating
				personnel all necessary procedures for maintaining the integrity of the liner,
				leachate collection systems, and final cover;
(3) for the soil component, prescribe the
				following minimum frequency of testing for the soil component of all liners and
				final covers, unless otherwise specifically approved by the department:
(a) soil from the borrow source shall be
				tested as follows:
(i) grain size shall be
				tested once every 1,000 cubic yards;
(ii) Atterberg limits shall be tested once
				every 5,000 cubic yards;
(iii)
				Proctor compaction moisture-density curve conformance shall be tested once
				every 5,000 cubic yards; and
(iv)
				laboratory permeability shall be tested once every 5,000 cubic yards;
				and
(b) during
				construction of the liner or cover, the soil shall be tested as follows:
(i) density and moisture content tested by
				nuclear desiometer shall be tested four times per acre per lift;
(ii) laboratory or in-situ permeability shall
				be tested once per 2 acres and laboratory samples shall be undisturbed or
				recompacted to the site-specific field conditions; and
(iii) total thickness (by survey) shall be
				tested once per acre (on grid);
(4) for the prot ective cover component of
				liners, when used to facilitate leachate drainage, prescribe the following
				minimum frequency of testing of the granular drainage layer, unless
				specifically approved by the department:
(a)
				grain size of the soil shall be tested once every 1,500 cubic yards;
				and
(b) total thickness of the
				drainage layer shall be tested five times per acre; and
(5) for the geomembrane component of all
				liners and final covers as defined in Subsection A of 20.9.4.13 NMAC and
				Subsection A of 20.9.6.9 NMAC, all testing, both shop and field, shall be as
				recommended by the manufacturer unless otherwise specifically approved by the
				department; the minimum frequency of taking seam samples for destructive
				testing shall be one per 500 feet of seam length, with a portion of each test
				sample tested in the field and another in the laboratory; seam samples shall be
				tested for peel adhesion and bonded seam strength; non-destructive testing
				shall be performed for all seams, seam repairs, and liner repairs.