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4. Detailed Work Plan. The detailed work plan shall include or describe, at least, the <br />following: <br />A. List of major equipment to be used. <br />B. Specifications of the batch plant and slurry mixing including tanks, pumps, <br />valves, hoses and supply lines. <br />C. Layouts showing locations of equipment, ponds, remote mixing areas, access <br />and haul roads. <br />D. Material and equipment storage methods and locations. <br />E. Procedures for water-bentonite slurry mixing, transportation, and recirculation. <br />F. Procedures for control of drainage, spills, wastes, etc. <br />G. Sequence and schedule for temporary working surfaces, haul roads, remote <br />mixing and backfill transportation, as necessary, working surface removal, and <br />restoration. <br />H. Procedures for trench excavation, slurry placement, backfill mixing and backfill <br />placement. <br />1. Material properties (gradation and moisture content) and sources for materials to <br />be used to augment the fines content of the backfill mixture. <br />J. Disposal procedures, disposal facilities and haulers for excess slurry. <br />5. Quality Control Program. Details of the Contractor's quality control program, including <br />personnel, organization, responsibilities, sampling and testing equipment and frequencies, <br />inspections and the quality control report forms. <br />6. Bar-Chart Construction Schedule. The Work shall not commence prior to approval of the <br />preconstruction SUBMITTALS by the Owner/Engineer. <br />During Construction. The Contractor shall submit for approval during construction: <br />1. The Contractor shall prepare and submit Quality Control Test Results of field quality <br />control tests and inspections within 3 calendar days of performance, unless otherwise <br />directed by the Owner/Engineer. The results shall be reported on forms accepted by <br />submittal. <br />2. A Certification of Compliance from the supplier shall accompany each shipment of <br />bentonite to the site. <br />3. Requests for revisions to the bentonite source, water source, work plan, quality control <br />plan, or bar chart schedule shall be submitted to the Owner/Engineer. Approval must be <br />received from the Owner/Engineer prior to implementing any of the revisions described <br />above. <br />4. For any approved material for the backfill mixture, the Contractor shall submit: <br />1. Gradation test results in accordance with ASTM D422, at a frequency of 1 test <br />per 4,000 cubic yards and if the material characteristics change, and <br />2. Atterberg limits test results in accordance with ASTM D4318, at a frequency of 1 <br />test per 4,000 cubic yards and if the material characteristics change, and <br />3. Moisture content test results in accordance with ASTM D-2216, at a frequency of <br />1 test per 4,000 cubic yards and if the material characteristics change. <br />5. The Contractor shall maintain quality control and construction SUBMITTALS up to date. If <br />the Contractor for whatever reason does not submit acceptable quality control data in a <br />timely manner, the Owner/Engineer may stop the associated work without a contract <br />extension.