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<br />Post construction testing will be completed in accordance with the "State Engineer <br />Guidelines for Lining Criteria for Gravel Pits", August 1999, section 3.1 <br />4.8 Final Construction Renort <br />The final construction report will detail the installation of the slurry wall, describe any <br />problems, list the results of testing that was conducted under the approved Materials <br />Quality Control Plan, and include an as-built drawing of the alignment. <br />4.9 Quality Control Plan <br />The project materials will be tested as follows: <br />A. Materials <br />1. Bentonite: The manufacturer's certificate of compliance will be <br />obtained. <br />2. Backfill Mix: backfill materials will be tested for slump and <br />gradation prior to placement in the trench. The frequency of <br />testing the backfill mixture will be a minimum of one slump test per <br />100 cubic yards of backfill material and one gradation test per 300 <br />cubic yards prepared for introduction into the trench. <br />3. Water: pH and total hardness tested per water source used <br />4. Backfill Soils: one per borrow source, or as materials change <br />B. Sluny for Placement into the Trench <br />The slurry introduced into the trench will be tested each time a batch is <br />prepared in the slurry mixing pond. The tests will include pH levels, unit <br />weight of the slurry, filtration loss, and viscosity of the slurry. <br />C. Slurry in the Trench <br />The slurry will be tested at least once per shift at the point of trenching. <br />Slurry samples will be obtained within two feet of the bottom and within <br />two feet of the top of the trench and will be tested for unit weight and sand <br />content. <br />