Soils proposed to be used as liner or intermediate or final cover material shall be tested as follows:

1. (1) Sample collection. At least one sample shall be collected for each type of material proposed for use as liner or intermediate or final cover material.
2. (2) Laboratory requirement. The soil samples shall be tested by a soils laboratory under the direction of a licensed professional engineer.

3. (3) Required tests. The following tests shall be conducted on each type of soil sampled:

   1. (A) soil classification according to the specifications of ASTM D2487;
   2. (B) particle-size analysis of soil according to the specifications of ASTM D422;
   3. (C) sieve analysis for the following screen sizes: #4, #10, #40, #200;
   4. (D) percent fines (#200 sieve) according to the specifications of ASTM D1140;
   5. (E) Atterberg limits according to the specifications of ASTM D4318;
   6. (F) moisture content according to the specifications of either the oven drying method of ASTM D2216 or the microwave drying method of ASTM D4643;
   7. (G) moisture-density relationship according to the specifications of the standard proctor test of ASTM D698 or the modified proctor test of ASTM D1557; and
   8. (H) hydraulic conductivity according to the specifications of ASTM D5084 or any other method approved by the DEQ.

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