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• Quality Assurance <br /> LS-7 Field Testing: Field testing to be conducted in accordance with <br /> ASTM Designation: D 1556, "Standard Test Method for Density of <br /> Soil In Place by the Sand Cone Method". The maximum dry density <br /> for the subgrade soils shall be corrected in accordance with <br /> AASHTO Designation: 224. "Standard Method of Correction for <br /> Coarse Particles in Soil Compaction Test" to establish target <br /> values for each compaction test. Said testing to be provided by <br /> the seepage inhibitor manufacturer. <br /> Performance Testing <br /> LS-8 Samples of the completed soil liner material will be taken by the <br /> seepage inhibitor manufacturer. These specimens will be tested <br /> to determine their permeability coefficient. <br /> Workmanship <br /> LS-9 General: The procedure for constructing the low permeability <br /> soil membrane is to place the liner in layers of six inches each. <br /> For this purpose, the lake shall be isolated into convenient <br /> sections for mixing, spreading, and compacting the layers of low <br /> permeability membrane. <br /> Note: In some cases, due to nature of soil, compacted area shall <br /> be flooded with water treated with seepage inhibitor. The need <br /> for treated water flooding to be determined by supplier of sealant <br /> materials. See section on flooding, page LS-4. <br /> LS-10 Membrane Formation: The formation of sealant membrane maybe <br /> accomplished by the following procedures <br /> 1. Where in place soil is specified "select soil", the lake <br /> bottom shall be over excavated by the specified lining <br /> thickness less six (6) inches. The lower six-inch <br /> compacted layer of the membrane shall be obtained by <br /> discing the subgrade and applying water and emulsion <br /> mixture and compacting as described herein under <br /> MIXING, SPREADING AND COMPACTION. All grades to <br /> be maintained plus or minus one tenth of a foot. <br /> 2. After the first layer is installed, compacted and finished, <br /> install the successive layer"s" in the same procedure as <br /> the first layer. <br /> LS- 2 <br />