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6.6Methc� and frequency of,Msam ling _o ..each v3dgse zone and grpund��, <br /> water monitoring ng fac 1ity <br /> 7. ' Analytical methods used to determine- specif constituents <br /> s contained in-ground water and vadose zone samples`'and. rationale <br /> to wily a "particular analytical Easeselected <br /> tod eras <br /> ._.gtip ,hEical ,constituents contained in sam e 'from gruiid mater an <br /> ;r vadose zone monitoring face 1 it ies <br /> a. < _ident� icai,on of constituents which are related to, or may� 6 <br /> related to was constituents containe in the Ampoundment: <br /> b. ee tion limit for any constituent reported to "non detectable ' <br /> n _ >•.....,A , <br /> 9. Desci^ipt�on of Quality Assurar�ceiQual i ty Cgntrol (QA/QC)„arid chaia P' <br /> of custody programs ira lemeriteda taE assure accuracy andreliabilitYl <br /> r f re.sul is <br /> 8. Documentation thatexistin ground water and vadose zone monitoring <br /> systems will detect any seepage from the impoundment before any <br /> hazardous waste constituent can enter the waters of the State [Health PIML <br /> and Safety Code Section 25208.8(1 )] P F <br /> 1. Documentation that monitoring wells are sufficiently close to the ' <br /> impoundment to identify any vertical or lateral migration of <br /> constituents from the impoundment <br /> 2. Documentation that monitoring wells are not located within the area <br /> of influence of any pumi ng well which could impair their <br /> effectiveness <br /> 3. Documentation that monitoring wells are perforated (screened) only <br /> in the aquifer or water-bearing zone to be monitored <br /> 4. Documentation that the casing material of each monitoring well does <br /> not interfere or react with contaminants of major concern contained <br /> in the impoundment <br /> 5. Demonstration that the casing diameter of each ground water <br /> monitoring well is appropriate for the hydrogeologic conditions, <br /> including allowance for complete development of the monitoring well <br /> and allowance for an adequate amount of water to be removed during <br /> sampling " <br /> 6. Documentation that the annular seal in each ground Prater monitoring <br /> facility prevents downward movement of pollutants from the <br /> impoundment, from the ground surface, or from an upper zone to the <br /> . zone being monitored <br /> -10- <br />��a. <br />