1. (a) Required tests. The following tests are required on all soils to be used in liner construction.

   1. (1) soil classification (ASTM D2487);
   2. (2) particle-size analysis of soil (ASTM D422);
   3. (3) sieve analysis for the following screens: #4, #10, #40, #200;
   4. (4) percent fines (#200 sieve) (ASTM D1140);
   5. (5) Atterberg limits (ASTM D4318);

   6. (6) moisture content using:

      1. (A) the oven drying method (ASTM D2216); or
      2. (B) the microwave drying method (ASTM D4643);

   7. (7) moisture-density relationship, using either:

      1. (A) the standard proctor density (ASTM D698); or
      2. (B) the modified proctor density (ASTM D1557);
   8. (8) hydraulic conductivity using ASTM D5084 or any other method approved by the DEQ.
2. (b) Sampling frequency. One composite sample shall be taken for every 10,000 cubic yards of soil, or more frequently if visual observations indicate a change in material characteristics.
3. (c) Test results. All laboratory test results shall state the type of tests used, the method of testing and the condition, preparation and orientation of each sample.
4. (d) Information required. The information required by this Section shall be included in the LIT report.

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