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GROUNDWATER MONITORING PROGRAM <br /> GENERAL QUALITY ASSURANCE PLAN <br /> Table of Contents <br /> Page <br /> INTRODUCTION 1 <br /> Chapter 1 <br /> PURGING 2 <br /> 1. 1 Equipment 2 <br /> 1 . 2 Well Purging 3 <br /> 1 . 3 Purging Procedures 6 <br /> 1 . 4 Cleaning/Decontamination Procedure 7 <br /> 1 . 5 Cleaning Interface Probe and Exteriors 8 <br /> of Hoses <br /> Chapter 2 <br /> SAMPLING 9 <br /> 2 . 1 Equipment 9 <br /> 2 . 2 Reagents Used as Preservatives 10 <br /> 2 . 3 Procedures to Prepare Bottles 10 <br /> 2 . 4 Sample Collection 11 <br /> Chapter 3 <br /> RECORD KEEPING AND REPORTING 15 <br /> 3 . 1 Field Log 15 <br /> 3 . 2 Definition of Custody 16 <br /> 3 . 3 Chain-of-Custody Record 16 <br /> 3 . 4 Request-for-Analysis Form 17 <br /> 3 . 5 Sample or Shipping Container Seals 17 <br /> Chapter 4 <br /> CONTRACT LABORATORY QUALITY ASSURANCE 18 <br /> 4 . 1 Laboratory Sample Custodian 18 <br /> 4 . 2 Quality Control 18 <br /> Chapter 5 <br /> FIELD QUALITY CONTROL PROGRAM 20 <br /> 5 . 1 Duplicates 20 <br /> 5 . 2 Field Standards 20 <br />