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® 5 CONSTRUCTION QUALITY ASSURANCE FOR HDPE <br /> PIPE AND TANKS <br /> 5.1 Introduction <br /> This section describes CQA procedures for high density polyethylene (HDPE) pipe and tank <br /> installations. Perforated and solid HDPE pipe will be utilized to construct the leachate collection and <br /> recovery systems. <br /> CQA for the HDPE pipe and tank installations will be performed to verify that HDPE pipe systems <br /> and tanks are installed in accordance with the design. Construction must be conducted in accordance <br /> with the Construction Drawings and Specifications. To monitor compliance,the CQA program will <br /> (1) review the Contractor's quality control submittals; (2) monitor construction testing; and (3) <br /> monitor installations. <br /> All construction testing will be conducted in accordance with the Specifications. <br /> 5.2 Construction Monitoring <br /> The following sections list monitoring requirements during HDPE pipe and tank operations. <br /> 5.2.1 Delivery,Handling, and Storage <br /> • Verify that chains,end hooks,cable slings,or any other devices that may scar the pipe or <br /> tank are not used for handling. Wide nylon web slings are recommended to handle the <br /> pipe. <br /> • Verify that the pipe or tanks are not damaged during handling operations and that <br /> damaged pipe or tanks are separated from accepted materials. <br /> • Verify that pipe out-of-roundness will not occur due to excessive stacking heights when <br /> the pipe is stored at the site. Recommended stacking heights for pipe are provided in the <br /> following chart: <br /> Page 49 <br />