Laserfiche WebLink
Lined Pit Guide 12 Se tember 2000 <br />Construction Quality Assurance Plan <br />This plan addresses the construction quality assurance (CQA) procedures for the installation of the <br />earthworks components for a clay liner reservoir project. The CQA program is developed to assure that <br />the construction of the soil components are in compliance with the project specifications and to <br />demonstrate achievement of the construction regulatory requirements. <br />The CQA monitor is the firm or individual responsible for performing the quality assurance tasks. The <br />specific.responsibilities of the CQA monitor include: <br />• review the drawings, specifications, and related guidance documents; <br />• observe excavation activities and backfilling operations; <br />• obtain preconstruction and construction samples and perform material evaluation testing as <br />required;;. <br />• monitor and document material placement, including soil type, clod and particle size, loose lift <br />thickness, moisture conditioning process, compaction equipment and methods, number of passes, <br />uniformity of compaction coverage, compacted lift thickness, bonding of lifts and in-place moisture <br />content and dry density is as required by the specifications; <br />• assure that testing equipment used and tests performed are conducted according to specifications <br />and industry standards; <br />• document and report test results; <br />• report any deficiencies in the construction and their resolution; <br />• prepare a construction certification report describing the construction, any deviations from <br />specifications or drawings and details (with reasons and resolutions), field and laboratory test data and <br />results, and will include professional certification that construction was completed in accordance with <br />the plans and specifications. <br />The following table is an example of a CQA testing protocol for a clay liner project. <br />SOIL LINER TESTING FREQUENCY <br />VOLUME PER TEST' <br />. Test and ASTM Designation Soil Liner Fill (c y) <br />Compaction (ASTM D 698) 5,000 <br />Particle Size (ASTM D 422) 5,000 <br />Atterber Limit (ASTM D4318) 59000 <br />Moisture Content (ASTM D 2216) 500 <br />Permeability (ASTM D 5084/2434) 159000 <br />Nuclear Density- 500 <br />1. Specified frequency or one per material type, whichever is greater. <br />2. Specified frequency or minimum of four per day, whichever is greater.