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1. Soundings and As-Built Profile <br /> a. The Contractor shall maintain a record of soundings taken during construction including the <br /> depth of the trench,key,and backfill slope obtained each morning and evening.The soundings <br /> shall be used to generate an as-built profile of the trench,as constructed.The Contractor shall <br /> submit said profile at the completion of construction. <br /> 2. Fresh Bentonite Slurry Mix <br /> a. A record of plant-mixed bentonite slurry quantities,proportions,and admixtures made during <br /> construction.Adjustments to the slurry mixture shall be noted. <br /> 3. Slurry-Bentonite(SB)Backfill Mix <br /> a. A record of SB backfill material quantities and mix a ' nts made during construction. <br /> 1.5 JOB SITE CONDITIONS <br /> A. The Contractor shall comply with all safety requir nts a ocedures. <br /> B. The Contractor shall perform all work with qualified p nel under the continuous supervision of the <br /> slurry trench specialist. <br /> C. The Contractor shall exercise extreme care pro - • .r ent damage or disruption to existing <br /> utilities. <br /> D. The Contractor is responsible ont. all uti owners,including overhead electrical,in the vicinity of <br /> the work to coordinate uti. ocates --energi .r shielding power lines,and observing the crossing <br /> of buries utilities;and prot- - - ies from damage. <br /> 1.6 PRODUCT DELIVERY •NDLI • D . GE <br /> A. The Contractor deliver all aterials to the site in undamaged,unopened containers bearing the <br /> manufacturer's ori, -I label <br /> B. The Contractor shall d- or use only fresh materials to the site. <br /> C. The Contractor shall store and handle materials in accordance with the manufacturer's <br /> recommendations. <br /> PART 2- MATERIALS AND EQUIPMENT <br /> 2.1 BENTONITE SLURRY <br /> A. Bentonite slurry shall consist of a stable colloidal suspension of bentonite in water and shall be <br /> controlled in accordance with the most current API Recommended Practice 13B-1,Table 1,and the <br /> following requirements: <br /> Loloff Slurry Wall 3156 00-3 <br />