Okla. Admin. Code § 252:515-11-73

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

Section 252:515-11-73 - Post excavation/pre-disposal tests

(a)Visual inspection. After excavation and prior to disposal, a qualified soils scientist, engineer or geologist shall perform a visual inspection of the disposal area floor to:

(1) locate any cracks, joints, fractures, roots, exposures or other physical phenomena that might indicate areas more permeable than allowed; and

(2) locate the areas for the post excavation tests that follow.

(b)Thickness and integrity testing. A minimum of five continuous core samples per acre shall be collected to a depth of five feet below the top of the in-situ liner.

(1) A qualified soil scientist, engineer or geologist shall describe the soil types and check for uniformity.

(2) If variations are noted in the core samples, permeability testing must be performed on undisturbed samples of each soil type.

(c)Top of liner tests. The following tests must be performed on the top of the proposed liner:

(1) at least five natural or in-place moisture and density tests per acre; and

(2) in locations approved by the DEQ, at least three density tests per acre on the sides and bottom of the liner on samples of each soil layer.

Okla. Admin. Code § 252:515-11-73

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