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Memo to Gregg Squire 4 March l3 2001 <br />topsoil as shown in the reclamation plan. If evidence of desiccation or frost damage is <br />observed, the soil liner will be reworked and retested as necessary to demonstrate that the <br />compaction specification is met. <br />viii) Large rocks (greater than 2 inches) will be removed from the soil liner fill. Soil clods <br />larger than 4 inches will be broken-up. <br />e) The application states that Part II of the Daily Log Form will be used to record such observations <br />as start and end times for work tasks, changes in weather, and changes in personnel. Part II of the <br />Log Forth should also be used to document the following observations: <br />i) Observation and measurement of soil liner loose lift thickness should be recorded in the log <br />at a high frequency. <br />ii) Regular observations that the minimum number of passes with compacting equipment are <br />being completed should be documented in the log. <br />iii) Observations and descriptions of the adequate preparation of the subgrade and of <br />previously compacted lifts to ensure proper bonding should be recorded. <br />iv) The log should document regular (ai least one per acre) observations and descriptions of <br />soil liner borrow soil in accordance with ASTM D2488-93e1, Standard Practice for <br />Description and Identification of Soils (Visual-Manual Procedure). Essentially, the <br />specifications limit acceptable soil liner fill [o type CL soil under the Unified Soil <br />Classitication System. If the visual-manual soil identification yields a soil type other than <br />CL, a sample should be collected for laboratory analysis, and if the Operator wants to use a <br />soil type other than CL, the written approval should be sought from the Division. <br />v) The Daily Log Form may be used to document the identification of an unacceptable block <br />of work, describe any corrective actions taken, and provide the results of any necessary <br />retesting. <br />f) Other pit liner issues: <br />i) To properly regulate the liner installation, the Division must receive a commitment from <br />the Applicant stating that the design and specifications will not be modified without prior <br />Division approval. <br />ii) Final construction report and certification to be provided to the Division. The quality <br />assurance engineer prepares a final report at the conclusion of the liner installation. This <br />report summarizes the results of the quality assurance tests and observations, describes any <br />problems that occurred during construction and the details of how problems were resolved, <br />and includes a certifying statement that the installation was completed in accordance with <br />the approved design plans and specifications. <br />iii) Testing of the completed liner. In order to assure that the lined pit meets applicable design <br />and performance standards, the inflows to the pit must be measured. Liner performance <br />testing is conducted in accordance with "State Engineer Guidelines for Lining Criteria for <br />Gravel Pits," August 1999. Typically, this testing is coordinated with the local Water <br />Commissioner and documentation that the State Engineer's Office is satisfied with the <br />performance of the lined pit is provided to the Division. At this point, any bond amount <br />assigned to liner installation or repair may be returned to the Operator of the pit. <br />