2011-08-30_REVISION - M1977215 (2)

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B. All work shall be monitored and tested in compliance with the requirements of Section 01450: Quality Assurance /Quality Control. C. Contractor shall be aware of all testing activities required and shall account for these activities in the construction schedule. D. All soils testing (both field and laboratory) will be the responsibility of the Design Engineer and CQA monitor. Contractor shall be responsible for cooperating with the CQA Monitor during all testing activities. The Contractor shall provide equipment and labor to assist the CQA Monitor in sampling, if requested, and shall also provide access to all areas requiring testing activities. QC testing shall be the responsibility of the Contractor. E. All excavation, backfill, and grading operations shall be carried out under the observation of the Project Manager and CQA Monitor. F. Any work found unsatisfactory or any work disturbed by subsequent operations before acceptance is granted shall be corrected by Contractor at it's sole cost. PART2 PRODUCTS 2.1 EQUIPMENT A. General — All equipment shall conform to the Manufacturer's Specifications. The Contractor shall provide the proper equipment necessary to complete the work as required in these Specifications and as shown on the Drawings. Below is a partial list of suitable equipment suggested for this work. The Contractor shall provide a complete list of equipment to be used to complete the work. At a minimum, the list shall include make, model, and intended use of the equipment. The Project Manager and Engineer shall review the list for approval. The equipment shall be maintained in good working condition at all times. B. Vibratory rollers with: (a) single smooth drum steel, 60 -inch minimum width compaction drums or (b) high speed tamping foot self propelled compactors. The vibratory compactors shall have a minimum static operating weight of 15,000 pounds. Each drum shall be capable of producing a minimum centrifugal force of 22,000 pounds at a frequency of vibration between 1,200 and 2,000 cycles per minute. Operate vibrating compactors at the constant frequency of vibration, as determined by the Engineer. C. Caterpillar Model D8L dozer, or approved equal, fitted with standard track as defined in the "Caterpillar Performance Handbook, 22nd Edition." Maintain the track growsers at all times in such condition as to provide efficient breaking and blending of the backfill materials. In no case, however, shall the depth of the track growsers be allowed to wear down to less than 50 percent of their depth when new, prior to being restored and replaced. Rio Grande Silver Tailings Evaporation Pond August 2011 02320 -3 Earthwork 02320