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Construction Quality Assurance(CQA) Plan Extension of Closure Cap <br /> Corral Hollow Sanitary Landfill August 21,2008 <br /> poor quality. During the progress of the work, density test locations will be plotted on <br /> a drawing by the CQA Monitor to verify that no significant areas are untested. The <br /> drawing will become part of the FCR. <br /> 3.4 Monitoring and Testing Requirements <br /> Earthwork components of the construction are summarized in Paragraph 3.1 of this <br /> section. Each component has specific construction requirements that must be <br /> monitored. The following sections list the monitoring requirements for each type of <br /> earthwork. <br /> 3.4.1 Clearing and Stripping <br /> ♦ Observe that erosion and sediment control silt fences, straw bale barriers, <br /> and other measures are securely in place prior to initiating clearing and <br /> stripping operations in any area. <br /> ♦ Observe that existing plant life designated to remain is protected against <br /> damage during construction. <br /> ♦ Observe that clearing and stripping in areas required for site access and <br /> execution of the work is complete. <br /> 3.4.2 Engineered Fill <br /> ♦ Observe that engineered fill is placed in accordance with the lines and <br /> grade shown on the construction drawings. <br /> ♦ Observe that material sources are suitable for compacted subgrade. <br /> ♦ Observe that fill material is compacted to 90% of the maximum dry <br /> density as determined by ASTM D1557. <br /> ♦ Perform tests at testing frequencies specified Table 3-1. <br /> 3.4.3 Liner Subgrade Preparation <br /> ♦ Observe that material source is suitable for the subgrade, is free of <br /> organic and oversized materials, and meets the grading requirements of <br /> the technical specifications. <br /> to <br /> Vector Engineering, Inc. •143E Spring Hill Drive *Grass Valley, CA• (530) 272-2448 <br /> -19- <br />