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Coulson Ezcavating Company, Inc. - Bonser Gravel Pit Ezhibit E - Appendiz I QusGty Assurance Procedure The quality assurance plan wnsists of field procedures and tests designed to monitor and document liner construction procedure and soil moisture content during the compaction process. At the beginning of a liner installation workday, Part I of the daily log form is to be filled out completely. Part II of the daily log form is to be completed throughout the day. Part U should include information such as start and end times for work tasks, changes th weather, changes in personnel, identification of an unacceptable black of work and corrective actions taken, and results of testing. Observation and measurement of soil liner loose lift thickness should be recorded in the log at a high frequency, along with documentation (by observation) that the minimum number of passes with compacting equipment are being completed. Moreover, observations and descriptions of the adequate preparation of the sub-grade, and of previously compacted lifts, should be recorded to ensure proper bonding. The following information shall also be included: In order to insure that the borrow material is consistently suitable for liner material, the material properties are to be tested once for every acre. The tests will be as listed in the following table: Parameter Test Method Minimum Testing Frequency Percent Fines ASTM Dl 140 Once per acre Percent Gravel ASTM D422 Once per acre Liquid and Plastic Limits ASTM D4318 Once per acre Standard Proctor ASTM D698 Once per acre Observations and descriptions of the borrow material will be in accordance with ASTM D2488- 93e1, Standard Practice for Description and Identification of Soils (Visual Manual Procedure). If the liner material yields a soil type other than CL, a sample will be collected for laboratory analysis and a written approval for use of the material will be sought from the Division of Minerals and Geology. Following application of a loose lift of liner material, the average moisture content will be measured in the field by ASTM method D 4643-93. Soil samples are to be taken at a density of 8 samples per 2 acres of liner area. The samples are to be taken by driving a 1.5 in. tube into the ground to a depth of I ft. The tube is then pulled and the sample put into a plastic zip lock bag. The general location of the sample is recorded on the moisture sample form given at the end of this section. After the moisture content is measured for each of the eight samples, the numeric average is taken and recorded in the moisture loss/gain calculation sheet. The average moisture content is then compared to the optimum moisture content. If the average field measurement is greater than optimum, then the soil will need to dry. The amount of drying time can be approximated by referring to the tables in Appendix II. if the average field