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KLEINFELDER 1 INTRODUCTION 1.1 GENERAL This document describes the revised construction quality assurance and quality control (QA/QC) procedures developed by Kleinfelder Inc. for the final soil cover of the Harney Landfill in San Joaquin County, California. The landfill is a Class III Sanitary Landfill owned by San Joaquin County and operated under Solid Waste Facilities permit No. 39-AA-003 and Waste Discharge Requirement Order Number 87-088. Kleinfelder was retained by the San Joaquin County Department of Public Works (SJDPW) to prepare this revised Construction Quality Assurance (CQA) Plan to comply with requirements of Title 14, Chapter 3, Article 7.8, Section 17774, California Code of Regulations (Title 14 Section 17774). The revised CQA Plan is meant to supplement the Final Closure and Postclosure Maintenance Plan, revised for resubmittal May, 1994 by the SJDPW (hereinafter referred to as "Closure Plan"). The revised CQA plan is in response to a request by the CVRWQCB. Between the time the original CQA plan was issued (December 5, 1991) to the present, a number of modifications to the original CQA plan have occurred. A test pad was,constructed and tested, an assessment of sideslope infiltration was performed, and construction and testing procedures have slightly changed. The revised CQA plan reflects these changes. 1.2 PURPOSE The purpose of this revised QA/QC plan is to set forth the means by which verification of construction quality will be determined, and to provide a construction guide to all parties. This plan also sets forth the criteria for handling any required construction variances, and for rectifying any observed construction deficiencies. The QA/QC plan has been prepared to meet the following objectives: 1. Define the responsibilities, activities authorities and required qualifications of the project personnel. 2. With respect to sampling set forth: i. The sampling procedures ii. The frequency of sampling iii. The pattern of sampling iv. The material to be sampled V. The transportation and handling of samples GSM.MD 3EI94 Page I of 24 Copyright 1994 Kleinfelder,Inc.