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File No. 20-1008-36 <br /> July 14, 1995 <br /> 5 CONSTRUCTION CONTROL <br /> 5.1 STOPPAGE OF WORK <br /> The SJDPW, as project administrator and engineer, will control construction work. The <br /> construction forces, whether operators of SJDPW or a construction contractor to the County, will <br /> be under the supervision of the project engineer and direct supervision of the field construction <br /> supervisor. Meinfelder will observe construction activities and advise the County of deficiencies <br /> in the quality of work observed through field observation, review of the SJDPW field notes, or <br /> CQA test data. <br /> 5.2 GRADE CONTROL <br /> The SJDPW (or a qualified land survey contractor) will provide survey control notes and <br /> guidance to construction operators during the project. The SJDPW will check that the grades <br /> called out in the field staking are in accordance with the Closure Plan, or an approved as-built <br /> modification by the Engineer, and provide direction to the operators of deficiencies for corrective <br /> action. Sanguinetti and Associates will provide grade control for the low permeability layer. <br /> The grade control for the following will be verified using grade control stakes at 100-foot centers <br /> • Top and thickness of foundation <br /> • Barrier layer top and thickness <br /> • Top of vegetative layer and thickness <br /> The vertical control accuracy will be plus or minus 0.05 feet for the barrier layer and 0.10 feet for <br /> the foundation and vegetative layers. All surveys shall be based on the permanent bench marks in- <br /> place at the site used to control closure construction according to the County's landfill horizontal <br /> and vertical datum. <br /> GSM.-md CH/95 Page 18 of 31 July 14, 1995 <br /> 20-1008-36(CQACOP) Copyright 1995,Kleinfelder,Inc. <br />