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Monthly leachate sampling for the Austin Unit was completed as follows: <br /> • Leachate generated by the Au <br /> stm Unit is collected in sumps and a pump system transfers the <br /> leachate from the sump to an above ground polyethylene holding tank. <br /> • Upon arrival at the sampling location, the leachate tank was inspected for evidence of <br /> tampering and/or vandalism. <br /> • The leachate tanks were then checked for leachate. If leachate was present, a representative <br /> sample was collected from one of the leachate tanks using a decontaminated dipper or a new <br /> (factory sealed)disposable bailer. <br /> • Monthly leachate samples are collected and analyzed in the field for pH and EC and recorded <br /> on a Well Data Sheet. In addition to monthly monitoring, a leachate sample is collected <br /> annually during the fourth quarter monitoring period and submitted to the laboratory and <br /> analyzed for the parameters listed in Table 1B. <br /> • Sample preservation, order of collection, and Chain-of-Custody procedures described above <br /> for groundwater sampling were also adhered to for leachate sample collection. <br /> 4 <br /> DAForward3Aphn sp%.doe <br /> Geologic Associates <br />